/* GAIL - The GNOME Accessibility Implementation Library * Copyright 2001, 2002, 2003 Sun Microsystems Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #include "config.h" #include #include #ifdef GDK_WINDOWING_X11 #include #endif #include "gailtreeview.h" #include "gailrenderercell.h" #include "gailbooleancell.h" #include "gailcontainercell.h" #include "gailtextcell.h" #include "gailcellparent.h" #include "gail-private-macros.h" typedef struct _GailTreeViewRowInfo GailTreeViewRowInfo; typedef struct _GailTreeViewCellInfo GailTreeViewCellInfo; static void gail_tree_view_class_init (GailTreeViewClass *klass); static void gail_tree_view_init (GailTreeView *view); static void gail_tree_view_real_initialize (AtkObject *obj, gpointer data); static void gail_tree_view_real_notify_gtk (GObject *obj, GParamSpec *pspec); static void gail_tree_view_finalize (GObject *object); static void gail_tree_view_connect_widget_destroyed (GtkAccessible *accessible); static void gail_tree_view_destroyed (GtkWidget *widget, GtkAccessible *accessible); /* atkobject.h */ static gint gail_tree_view_get_n_children (AtkObject *obj); static AtkObject* gail_tree_view_ref_child (AtkObject *obj, gint i); static AtkStateSet* gail_tree_view_ref_state_set (AtkObject *obj); /* atkcomponent.h */ static void atk_component_interface_init (AtkComponentIface *iface); static AtkObject* gail_tree_view_ref_accessible_at_point (AtkComponent *component, gint x, gint y, AtkCoordType coord_type); /* atktable.h */ static void atk_table_interface_init (AtkTableIface *iface); static gint gail_tree_view_get_index_at (AtkTable *table, gint row, gint column); static gint gail_tree_view_get_column_at_index (AtkTable *table, gint index); static gint gail_tree_view_get_row_at_index (AtkTable *table, gint index); static AtkObject* gail_tree_view_table_ref_at (AtkTable *table, gint row, gint column); static gint gail_tree_view_get_n_rows (AtkTable *table); static gint gail_tree_view_get_n_columns (AtkTable *table); static gint get_n_actual_columns (GtkTreeView *tree_view); static gboolean gail_tree_view_is_row_selected (AtkTable *table, gint row); static gboolean gail_tree_view_is_selected (AtkTable *table, gint row, gint column); static gint gail_tree_view_get_selected_rows (AtkTable *table, gint **selected); static gboolean gail_tree_view_add_row_selection (AtkTable *table, gint row); static gboolean gail_tree_view_remove_row_selection (AtkTable *table, gint row); static AtkObject* gail_tree_view_get_row_header (AtkTable *table, gint row); static AtkObject* gail_tree_view_get_column_header (AtkTable *table, gint column); static void gail_tree_view_set_row_header (AtkTable *table, gint row, AtkObject *header); static void gail_tree_view_set_column_header (AtkTable *table, gint column, AtkObject *header); static AtkObject* gail_tree_view_get_caption (AtkTable *table); static void gail_tree_view_set_caption (AtkTable *table, AtkObject *caption); static AtkObject* gail_tree_view_get_summary (AtkTable *table); static void gail_tree_view_set_summary (AtkTable *table, AtkObject *accessible); static G_CONST_RETURN gchar* gail_tree_view_get_row_description (AtkTable *table, gint row); static void gail_tree_view_set_row_description (AtkTable *table, gint row, const gchar *description); static G_CONST_RETURN gchar* gail_tree_view_get_column_description (AtkTable *table, gint column); static void gail_tree_view_set_column_description (AtkTable *table, gint column, const gchar *description); static void set_row_data (AtkTable *table, gint row, AtkObject *header, const gchar *description, gboolean is_header); static GailTreeViewRowInfo* get_row_info (AtkTable *table, gint row); /* atkselection.h */ static void atk_selection_interface_init (AtkSelectionIface *iface); static gboolean gail_tree_view_add_selection (AtkSelection *selection, gint i); static gboolean gail_tree_view_clear_selection (AtkSelection *selection); static AtkObject* gail_tree_view_ref_selection (AtkSelection *selection, gint i); static gint gail_tree_view_get_selection_count (AtkSelection *selection); static gboolean gail_tree_view_is_child_selected (AtkSelection *selection, gint i); /* gailcellparent.h */ static void gail_cell_parent_interface_init (GailCellParentIface *iface); static void gail_tree_view_get_cell_extents (GailCellParent *parent, GailCell *cell, gint *x, gint *y, gint *width, gint *height, AtkCoordType coord_type); static void gail_tree_view_get_cell_area (GailCellParent *parent, GailCell *cell, GdkRectangle *cell_rect); static gboolean gail_tree_view_grab_cell_focus (GailCellParent *parent, GailCell *cell); /* signal handling */ static gboolean gail_tree_view_expand_row_gtk (GtkTreeView *tree_view, GtkTreeIter *iter, GtkTreePath *path); static gint idle_expand_row (gpointer data); static gboolean gail_tree_view_collapse_row_gtk (GtkTreeView *tree_view, GtkTreeIter *iter, GtkTreePath *path); static void gail_tree_view_size_allocate_gtk (GtkWidget *widget, GtkAllocation *allocation); static void gail_tree_view_set_scroll_adjustments (GtkWidget *widget, GtkAdjustment *hadj, GtkAdjustment *vadj); static void gail_tree_view_changed_gtk (GtkTreeSelection *selection, gpointer data); static void columns_changed (GtkTreeView *tree_view); static void cursor_changed (GtkTreeView *tree_view); static gint idle_cursor_changed (gpointer data); static gboolean focus_in (GtkWidget *widget); static gboolean focus_out (GtkWidget *widget); static void model_row_changed (GtkTreeModel *tree_model, GtkTreePath *path, GtkTreeIter *iter, gpointer user_data); static void column_visibility_changed (GObject *object, GParamSpec *param, gpointer user_data); static void column_destroy (GtkObject *obj); static void model_row_inserted (GtkTreeModel *tree_model, GtkTreePath *path, GtkTreeIter *iter, gpointer user_data); static void model_row_deleted (GtkTreeModel *tree_model, GtkTreePath *path, gpointer user_data); static void destroy_count_func (GtkTreeView *tree_view, GtkTreePath *path, gint count, gpointer user_data); static void model_rows_reordered (GtkTreeModel *tree_model, GtkTreePath *path, GtkTreeIter *iter, gint *new_order, gpointer user_data); static void adjustment_changed (GtkAdjustment *adjustment, GtkTreeView *tree_view); /* Misc */ static void set_iter_nth_row (GtkTreeView *tree_view, GtkTreeIter *iter, gint row); static gint get_row_from_tree_path (GtkTreeView *tree_view, GtkTreePath *path); static GtkTreeViewColumn* get_column (GtkTreeView *tree_view, gint in_col); static gint get_actual_column_number (GtkTreeView *tree_view, gint visible_column); static gint get_visible_column_number (GtkTreeView *tree_view, gint actual_column); static void iterate_thru_children (GtkTreeView *tree_view, GtkTreeModel *tree_model, GtkTreePath *tree_path, GtkTreePath *orig, gint *count, gint depth); static GtkTreeIter* return_iter_nth_row (GtkTreeView *tree_view, GtkTreeModel *tree_model, GtkTreeIter *iter, gint increment, gint row); static void free_row_info (GArray *array, gint array_idx, gboolean shift); static void clean_cell_info (GailTreeView *tree_view, GList *list); static void clean_rows (GailTreeView *tree_view); static void clean_cols (GailTreeView *tree_view, GtkTreeViewColumn *tv_col); static void traverse_cells (GailTreeView *tree_view, GtkTreePath *tree_path, gboolean set_stale, gboolean inc_row); static gboolean update_cell_value (GailRendererCell *renderer_cell, GailTreeView *gailview, gboolean emit_change_signal); static void set_cell_visibility (GtkTreeView *tree_view, GailCell *cell, GtkTreeViewColumn *tv_col, GtkTreePath *tree_path, gboolean emit_signal); static gboolean is_cell_showing (GtkTreeView *tree_view, GdkRectangle *cell_rect); static void set_expand_state (GtkTreeView *tree_view, GtkTreeModel *tree_model, GailTreeView *gailview, GtkTreePath *tree_path, gboolean set_on_ancestor); static void add_cell_actions (GailCell *cell, gboolean editable); static void toggle_cell_expanded (GailCell *cell); static void toggle_cell_toggled (GailCell *cell); static void edit_cell (GailCell *cell); static void activate_cell (GailCell *cell); static void cell_destroyed (gpointer data); #if 0 static void cell_info_remove (GailTreeView *tree_view, GailCell *cell); #endif static void cell_info_get_index (GtkTreeView *tree_view, GailTreeViewCellInfo *info, gint *index); static void cell_info_new (GailTreeView *gailview, GtkTreeModel *tree_model, GtkTreePath *path, GtkTreeViewColumn *tv_col, GailCell *cell); static GailCell* find_cell (GailTreeView *gailview, gint index); static void refresh_cell_index (GailCell *cell); static void get_selected_rows (GtkTreeModel *model, GtkTreePath *path, GtkTreeIter *iter, gpointer data); static void connect_model_signals (GtkTreeView *view, GailTreeView *gailview); static void disconnect_model_signals (GailTreeView *gailview); static void clear_cached_data (GailTreeView *view); static gint get_column_number (GtkTreeView *tree_view, GtkTreeViewColumn *column, gboolean visible); static gint get_focus_index (GtkTreeView *tree_view); static gint get_index (GtkTreeView *tree_view, GtkTreePath *path, gint actual_column); static void count_rows (GtkTreeModel *model, GtkTreeIter *iter, GtkTreePath *end_path, gint *count, gint level, gint depth); static gboolean get_next_node_with_child_at_depth (GtkTreeModel *model, GtkTreeIter *iter, GtkTreePath **path, gint level, gint depth); static gboolean get_next_node_with_child (GtkTreeModel *model, GtkTreePath *path, GtkTreePath **return_path); static gboolean get_tree_path_from_row_index (GtkTreeModel *model, gint row_index, GtkTreePath **tree_path); static gint get_row_count (GtkTreeModel *model); static gboolean get_path_column_from_index (GtkTreeView *tree_view, gint index, GtkTreePath **path, GtkTreeViewColumn **column); static void set_cell_expandable (GailCell *cell); static GailTreeViewCellInfo* find_cell_info (GailTreeView *view, GailCell *cell, GList** list, gboolean live_only); static AtkObject * get_header_from_column (GtkTreeViewColumn *tv_col); static gboolean idle_garbage_collect_cell_data (gpointer data); static gboolean garbage_collect_cell_data (gpointer data); static GQuark quark_column_desc_object = 0; static GQuark quark_column_header_object = 0; static gboolean editing = FALSE; static const gchar* hadjustment = "hadjustment"; static const gchar* vadjustment = "vadjustment"; struct _GailTreeViewRowInfo { GtkTreeRowReference *row_ref; gchar *description; AtkObject *header; }; struct _GailTreeViewCellInfo { GailCell *cell; GtkTreeRowReference *cell_row_ref; GtkTreeViewColumn *cell_col_ref; GailTreeView *view; gboolean in_use; }; G_DEFINE_TYPE_WITH_CODE (GailTreeView, gail_tree_view, GAIL_TYPE_CONTAINER, G_IMPLEMENT_INTERFACE (ATK_TYPE_TABLE, atk_table_interface_init) G_IMPLEMENT_INTERFACE (ATK_TYPE_SELECTION, atk_selection_interface_init) G_IMPLEMENT_INTERFACE (ATK_TYPE_COMPONENT, atk_component_interface_init) G_IMPLEMENT_INTERFACE (GAIL_TYPE_CELL_PARENT, gail_cell_parent_interface_init)) static void gail_tree_view_class_init (GailTreeViewClass *klass) { AtkObjectClass *class = ATK_OBJECT_CLASS (klass); GObjectClass *gobject_class = G_OBJECT_CLASS (klass); GtkAccessibleClass *accessible_class; GailWidgetClass *widget_class; GailContainerClass *container_class; accessible_class = (GtkAccessibleClass*)klass; widget_class = (GailWidgetClass*)klass; container_class = (GailContainerClass*)klass; class->get_n_children = gail_tree_view_get_n_children; class->ref_child = gail_tree_view_ref_child; class->ref_state_set = gail_tree_view_ref_state_set; class->initialize = gail_tree_view_real_initialize; widget_class->notify_gtk = gail_tree_view_real_notify_gtk; accessible_class->connect_widget_destroyed = gail_tree_view_connect_widget_destroyed; /* * The children of a GtkTreeView are the buttons at the top of the columns * we do not represent these as children so we do not want to report * children added or deleted when these changed. */ container_class->add_gtk = NULL; container_class->remove_gtk = NULL; gobject_class->finalize = gail_tree_view_finalize; quark_column_desc_object = g_quark_from_static_string ("gtk-column-object"); quark_column_header_object = g_quark_from_static_string ("gtk-header-object"); } static void gail_tree_view_init (GailTreeView *view) { } static void gail_tree_view_real_initialize (AtkObject *obj, gpointer data) { GailTreeView *view; GtkTreeView *tree_view; GtkTreeModel *tree_model; GtkAdjustment *adj; GList *tv_cols, *tmp_list; GtkWidget *widget; ATK_OBJECT_CLASS (gail_tree_view_parent_class)->initialize (obj, data); view = GAIL_TREE_VIEW (obj); view->caption = NULL; view->summary = NULL; view->row_data = NULL; view->col_data = NULL; view->cell_data = NULL; view->focus_cell = NULL; view->old_hadj = NULL; view->old_vadj = NULL; view->idle_expand_id = 0; view->idle_expand_path = NULL; view->n_children_deleted = 0; widget = GTK_WIDGET (data); g_signal_connect_after (widget, "row-collapsed", G_CALLBACK (gail_tree_view_collapse_row_gtk), NULL); g_signal_connect (widget, "row-expanded", G_CALLBACK (gail_tree_view_expand_row_gtk), NULL); g_signal_connect (widget, "size-allocate", G_CALLBACK (gail_tree_view_size_allocate_gtk), NULL); tree_view = GTK_TREE_VIEW (widget); tree_model = gtk_tree_view_get_model (tree_view); /* Set up signal handling */ g_signal_connect_data (gtk_tree_view_get_selection (tree_view), "changed", (GCallback) gail_tree_view_changed_gtk, obj, NULL, 0); g_signal_connect_data (tree_view, "columns-changed", (GCallback) columns_changed, NULL, NULL, 0); g_signal_connect_data (tree_view, "cursor-changed", (GCallback) cursor_changed, NULL, NULL, 0); g_signal_connect_data (GTK_WIDGET (tree_view), "focus-in-event", (GCallback) focus_in, NULL, NULL, 0); g_signal_connect_data (GTK_WIDGET (tree_view), "focus-out-event", (GCallback) focus_out, NULL, NULL, 0); view->tree_model = tree_model; if (tree_model) { g_object_add_weak_pointer (G_OBJECT (view->tree_model), (gpointer *)&view->tree_model); connect_model_signals (tree_view, view); if (GTK_IS_TREE_STORE (tree_model)) obj->role = ATK_ROLE_TREE_TABLE; else obj->role = ATK_ROLE_TABLE; } else { obj->role = ATK_ROLE_UNKNOWN; } /* adjustment callbacks */ g_object_get (tree_view, hadjustment, &adj, NULL); view->old_hadj = adj; g_object_add_weak_pointer (G_OBJECT (view->old_hadj), (gpointer *)&view->old_hadj); g_signal_connect (adj, "value_changed", G_CALLBACK (adjustment_changed), tree_view); g_object_get (tree_view, vadjustment, &adj, NULL); view->old_vadj = adj; g_object_add_weak_pointer (G_OBJECT (view->old_vadj), (gpointer *)&view->old_vadj); g_signal_connect (adj, "value_changed", G_CALLBACK (adjustment_changed), tree_view); g_signal_connect_after (widget, "set_scroll_adjustments", G_CALLBACK (gail_tree_view_set_scroll_adjustments), NULL); view->col_data = g_array_sized_new (FALSE, TRUE, sizeof(GtkTreeViewColumn *), 0); tv_cols = gtk_tree_view_get_columns (tree_view); for (tmp_list = tv_cols; tmp_list; tmp_list = tmp_list->next) { g_signal_connect_data (tmp_list->data, "notify::visible", (GCallback)column_visibility_changed, tree_view, NULL, FALSE); g_signal_connect_data (tmp_list->data, "destroy", (GCallback)column_destroy, NULL, NULL, FALSE); g_array_append_val (view->col_data, tmp_list->data); } gtk_tree_view_set_destroy_count_func (tree_view, destroy_count_func, NULL, NULL); g_list_free (tv_cols); } static void gail_tree_view_real_notify_gtk (GObject *obj, GParamSpec *pspec) { GtkWidget *widget; AtkObject* atk_obj; GtkTreeView *tree_view; GailTreeView *gailview; GtkAdjustment *adj; widget = GTK_WIDGET (obj); atk_obj = gtk_widget_get_accessible (widget); tree_view = GTK_TREE_VIEW (widget); gailview = GAIL_TREE_VIEW (atk_obj); if (strcmp (pspec->name, "model") == 0) { GtkTreeModel *tree_model; AtkRole role; tree_model = gtk_tree_view_get_model (tree_view); if (gailview->tree_model) disconnect_model_signals (gailview); clear_cached_data (gailview); gailview->tree_model = tree_model; /* * if there is no model the GtkTreeView is probably being destroyed */ if (tree_model) { g_object_add_weak_pointer (G_OBJECT (gailview->tree_model), (gpointer *)&gailview->tree_model); connect_model_signals (tree_view, gailview); if (GTK_IS_TREE_STORE (tree_model)) role = ATK_ROLE_TREE_TABLE; else role = ATK_ROLE_TABLE; } else { role = ATK_ROLE_UNKNOWN; } atk_object_set_role (atk_obj, role); g_object_freeze_notify (G_OBJECT (atk_obj)); g_signal_emit_by_name (atk_obj, "model_changed"); g_signal_emit_by_name (atk_obj, "visible_data_changed"); g_object_thaw_notify (G_OBJECT (atk_obj)); } else if (strcmp (pspec->name, hadjustment) == 0) { g_object_get (tree_view, hadjustment, &adj, NULL); g_signal_handlers_disconnect_by_func (gailview->old_hadj, (gpointer) adjustment_changed, widget); gailview->old_hadj = adj; g_object_add_weak_pointer (G_OBJECT (gailview->old_hadj), (gpointer *)&gailview->old_hadj); g_signal_connect (adj, "value_changed", G_CALLBACK (adjustment_changed), tree_view); } else if (strcmp (pspec->name, vadjustment) == 0) { g_object_get (tree_view, vadjustment, &adj, NULL); g_signal_handlers_disconnect_by_func (gailview->old_vadj, (gpointer) adjustment_changed, widget); gailview->old_vadj = adj; g_object_add_weak_pointer (G_OBJECT (gailview->old_hadj), (gpointer *)&gailview->old_vadj); g_signal_connect (adj, "value_changed", G_CALLBACK (adjustment_changed), tree_view); } else GAIL_WIDGET_CLASS (gail_tree_view_parent_class)->notify_gtk (obj, pspec); } static void gail_tree_view_finalize (GObject *object) { GailTreeView *view = GAIL_TREE_VIEW (object); clear_cached_data (view); /* remove any idle handlers still pending */ if (view->idle_garbage_collect_id) g_source_remove (view->idle_garbage_collect_id); if (view->idle_cursor_changed_id) g_source_remove (view->idle_cursor_changed_id); if (view->idle_expand_id) g_source_remove (view->idle_expand_id); if (view->caption) g_object_unref (view->caption); if (view->summary) g_object_unref (view->summary); if (view->tree_model) disconnect_model_signals (view); if (view->col_data) { GArray *array = view->col_data; /* * No need to free the contents of the array since it * just contains pointers to the GtkTreeViewColumn * objects that are in the GtkTreeView. */ g_array_free (array, TRUE); } G_OBJECT_CLASS (gail_tree_view_parent_class)->finalize (object); } static void gail_tree_view_connect_widget_destroyed (GtkAccessible *accessible) { GtkWidget *widget; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (accessible)); if (widget) { g_signal_connect_after (widget, "destroy", G_CALLBACK (gail_tree_view_destroyed), accessible); } GTK_ACCESSIBLE_CLASS (gail_tree_view_parent_class)->connect_widget_destroyed (accessible); } static void gail_tree_view_destroyed (GtkWidget *widget, GtkAccessible *accessible) { GtkAdjustment *adj; GailTreeView *gailview; gail_return_if_fail (GTK_IS_TREE_VIEW (widget)); gailview = GAIL_TREE_VIEW (accessible); adj = gailview->old_hadj; if (adj) g_signal_handlers_disconnect_by_func (adj, (gpointer) adjustment_changed, widget); adj = gailview->old_vadj; if (adj) g_signal_handlers_disconnect_by_func (adj, (gpointer) adjustment_changed, widget); if (gailview->tree_model) { disconnect_model_signals (gailview); gailview->tree_model = NULL; } if (gailview->focus_cell) { g_object_unref (gailview->focus_cell); gailview->focus_cell = NULL; } if (gailview->idle_expand_id) { g_source_remove (gailview->idle_expand_id); gailview->idle_expand_id = 0; } } gint get_focus_index (GtkTreeView *tree_view) { GtkTreePath *focus_path; GtkTreeViewColumn *focus_column; gint index; gtk_tree_view_get_cursor (tree_view, &focus_path, &focus_column); if (focus_path && focus_column) { index = get_index (tree_view, focus_path, get_column_number (tree_view, focus_column, FALSE)); } else index = -1; if (focus_path) gtk_tree_path_free (focus_path); return index; } AtkObject * gail_tree_view_ref_focus_cell (GtkTreeView *tree_view) { /* * This function returns a reference to the accessible object for the cell * in the treeview which has focus, if a cell has focus. */ AtkObject *focus_cell = NULL; AtkObject *atk_obj; gint focus_index; focus_index = get_focus_index (tree_view); if (focus_index >= 0) { atk_obj = gtk_widget_get_accessible (GTK_WIDGET (tree_view)); focus_cell = atk_object_ref_accessible_child (atk_obj, focus_index); } return focus_cell; } /* atkobject.h */ static gint gail_tree_view_get_n_children (AtkObject *obj) { GtkWidget *widget; GtkTreeView *tree_view; GtkTreeModel *tree_model; gint n_rows, n_cols; gail_return_val_if_fail (GAIL_IS_TREE_VIEW (obj), 0); widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj)); if (widget == NULL) /* * State is defunct */ return 0; tree_view = GTK_TREE_VIEW (widget); tree_model = gtk_tree_view_get_model (tree_view); /* * We get the total number of rows including those which are collapsed */ n_rows = get_row_count (tree_model); /* * We get the total number of columns including those which are not visible */ n_cols = get_n_actual_columns (tree_view); return (n_rows * n_cols); } static AtkObject* gail_tree_view_ref_child (AtkObject *obj, gint i) { GtkWidget *widget; GailTreeView *gailview; GailCell *cell; GtkTreeView *tree_view; GtkTreeModel *tree_model; GtkCellRenderer *renderer; GtkTreeIter iter; GtkTreeViewColumn *tv_col; GtkTreeSelection *selection; GtkTreePath *path; AtkRegistry *default_registry; AtkObjectFactory *factory; AtkObject *child; AtkObject *parent; GtkTreeViewColumn *expander_tv; GList *renderer_list; GList *l; GailContainerCell *container = NULL; GailRendererCell *renderer_cell; gboolean is_expander, is_expanded, retval; gboolean editable = FALSE; gint focus_index; g_return_val_if_fail (GAIL_IS_TREE_VIEW (obj), NULL); g_return_val_if_fail (i >= 0, NULL); widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj)); if (widget == NULL) /* * State is defunct */ return NULL; if (i >= gail_tree_view_get_n_children (obj)) return NULL; tree_view = GTK_TREE_VIEW (widget); if (i < get_n_actual_columns (tree_view)) { tv_col = gtk_tree_view_get_column (tree_view, i); child = get_header_from_column (tv_col); if (child) g_object_ref (child); return child; } gailview = GAIL_TREE_VIEW (obj); /* * Check whether the child is cached */ cell = find_cell (gailview, i); if (cell) { g_object_ref (cell); return ATK_OBJECT (cell); } if (gailview->focus_cell == NULL) focus_index = get_focus_index (tree_view); else focus_index = -1; /* * Find the TreePath and GtkTreeViewColumn for the index */ if (!get_path_column_from_index (tree_view, i, &path, &tv_col)) return NULL; tree_model = gtk_tree_view_get_model (tree_view); retval = gtk_tree_model_get_iter (tree_model, &iter, path); gail_return_val_if_fail (retval, NULL); expander_tv = gtk_tree_view_get_expander_column (tree_view); is_expander = FALSE; is_expanded = FALSE; if (gtk_tree_model_iter_has_child (tree_model, &iter)) { if (expander_tv == tv_col) { is_expander = TRUE; is_expanded = gtk_tree_view_row_expanded (tree_view, path); } } gtk_tree_view_column_cell_set_cell_data (tv_col, tree_model, &iter, is_expander, is_expanded); renderer_list = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (tv_col)); /* If there are more than one renderer in the list, make a container */ if (renderer_list && renderer_list->next) { GailCell *container_cell; container = gail_container_cell_new (); gail_return_val_if_fail (container, NULL); container_cell = GAIL_CELL (container); gail_cell_initialise (container_cell, widget, ATK_OBJECT (gailview), i); /* * The GailTreeViewCellInfo structure for the container will be before * the ones for the cells so that the first one we find for a position * will be for the container */ cell_info_new (gailview, tree_model, path, tv_col, container_cell); container_cell->refresh_index = refresh_cell_index; parent = ATK_OBJECT (container); } else parent = ATK_OBJECT (gailview); child = NULL; /* * Now we make a fake cell_renderer if there is no cell in renderer_list */ if (renderer_list == NULL) { GtkCellRenderer *fake_renderer; fake_renderer = g_object_new (GTK_TYPE_CELL_RENDERER_TEXT, NULL); default_registry = atk_get_default_registry (); factory = atk_registry_get_factory (default_registry, G_OBJECT_TYPE (fake_renderer)); child = atk_object_factory_create_accessible (factory, G_OBJECT (fake_renderer)); gail_return_val_if_fail (GAIL_IS_RENDERER_CELL (child), NULL); cell = GAIL_CELL (child); renderer_cell = GAIL_RENDERER_CELL (child); renderer_cell->renderer = fake_renderer; /* Create the GailTreeViewCellInfo structure for this cell */ cell_info_new (gailview, tree_model, path, tv_col, cell); gail_cell_initialise (cell, widget, parent, i); cell->refresh_index = refresh_cell_index; /* set state if it is expandable */ if (is_expander) { set_cell_expandable (cell); if (is_expanded) gail_cell_add_state (cell, ATK_STATE_EXPANDED, FALSE); } } else { for (l = renderer_list; l; l = l->next) { renderer = GTK_CELL_RENDERER (l->data); if (GTK_IS_CELL_RENDERER_TEXT (renderer)) g_object_get (G_OBJECT (renderer), "editable", &editable, NULL); default_registry = atk_get_default_registry (); factory = atk_registry_get_factory (default_registry, G_OBJECT_TYPE (renderer)); child = atk_object_factory_create_accessible (factory, G_OBJECT (renderer)); gail_return_val_if_fail (GAIL_IS_RENDERER_CELL (child), NULL); cell = GAIL_CELL (child); renderer_cell = GAIL_RENDERER_CELL (child); /* Create the GailTreeViewCellInfo structure for this cell */ cell_info_new (gailview, tree_model, path, tv_col, cell); gail_cell_initialise (cell, widget, parent, i); if (container) gail_container_cell_add_child (container, cell); else cell->refresh_index = refresh_cell_index; update_cell_value (renderer_cell, gailview, FALSE); /* Add the actions appropriate for this cell */ add_cell_actions (cell, editable); /* set state if it is expandable */ if (is_expander) { set_cell_expandable (cell); if (is_expanded) gail_cell_add_state (cell, ATK_STATE_EXPANDED, FALSE); } /* * If the column is visible, sets the cell's state */ if (gtk_tree_view_column_get_visible (tv_col)) set_cell_visibility (tree_view, cell, tv_col, path, FALSE); /* * If the row is selected, all cells on the row are selected */ selection = gtk_tree_view_get_selection (tree_view); if (gtk_tree_selection_path_is_selected (selection, path)) gail_cell_add_state (cell, ATK_STATE_SELECTED, FALSE); gail_cell_add_state (cell, ATK_STATE_FOCUSABLE, FALSE); if (focus_index == i) { gailview->focus_cell = g_object_ref (cell); gail_cell_add_state (cell, ATK_STATE_FOCUSED, FALSE); g_signal_emit_by_name (gailview, "active-descendant-changed", cell); } } g_list_free (renderer_list); if (container) child = ATK_OBJECT (container); } if (expander_tv == tv_col) { AtkRelationSet *relation_set; AtkObject *accessible_array[1]; AtkRelation* relation; AtkObject *parent_node; relation_set = atk_object_ref_relation_set (ATK_OBJECT (child)); gtk_tree_path_up (path); if (gtk_tree_path_get_depth (path) == 0) parent_node = obj; else { gint parent_index; gint n_columns; n_columns = get_n_actual_columns (tree_view); parent_index = get_index (tree_view, path, i % n_columns); parent_node = atk_object_ref_accessible_child (obj, parent_index); } accessible_array[0] = parent_node; relation = atk_relation_new (accessible_array, 1, ATK_RELATION_NODE_CHILD_OF); atk_relation_set_add (relation_set, relation); atk_object_add_relationship (parent_node, ATK_RELATION_NODE_PARENT_OF, child); g_object_unref (relation); g_object_unref (relation_set); } gtk_tree_path_free (path); /* * We do not increase the reference count here; when g_object_unref() is * called for the cell then cell_destroyed() is called and * this removes the cell from the cache. */ return child; } static AtkStateSet* gail_tree_view_ref_state_set (AtkObject *obj) { AtkStateSet *state_set; GtkWidget *widget; state_set = ATK_OBJECT_CLASS (gail_tree_view_parent_class)->ref_state_set (obj); widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj)); if (widget != NULL) atk_state_set_add_state (state_set, ATK_STATE_MANAGES_DESCENDANTS); return state_set; } /* atkcomponent.h */ static void atk_component_interface_init (AtkComponentIface *iface) { iface->ref_accessible_at_point = gail_tree_view_ref_accessible_at_point; } static AtkObject* gail_tree_view_ref_accessible_at_point (AtkComponent *component, gint x, gint y, AtkCoordType coord_type) { GtkWidget *widget; GtkTreeView *tree_view; GtkTreePath *path; GtkTreeViewColumn *tv_column; gint x_pos, y_pos; gint bx, by; gboolean ret_val; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (component)); if (widget == NULL) /* State is defunct */ return NULL; tree_view = GTK_TREE_VIEW (widget); atk_component_get_extents (component, &x_pos, &y_pos, NULL, NULL, coord_type); gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, x, y, &bx, &by); ret_val = gtk_tree_view_get_path_at_pos (tree_view, bx - x_pos, by - y_pos, &path, &tv_column, NULL, NULL); if (ret_val) { gint index, column; column = get_column_number (tree_view, tv_column, FALSE); index = get_index (tree_view, path, column); gtk_tree_path_free (path); return gail_tree_view_ref_child (ATK_OBJECT (component), index); } else { g_warning ("gail_tree_view_ref_accessible_at_point: gtk_tree_view_get_path_at_pos () failed\n"); } return NULL; } /* atktable.h */ static void atk_table_interface_init (AtkTableIface *iface) { iface->ref_at = gail_tree_view_table_ref_at; iface->get_n_rows = gail_tree_view_get_n_rows; iface->get_n_columns = gail_tree_view_get_n_columns; iface->get_index_at = gail_tree_view_get_index_at; iface->get_column_at_index = gail_tree_view_get_column_at_index; iface->get_row_at_index = gail_tree_view_get_row_at_index; iface->is_row_selected = gail_tree_view_is_row_selected; iface->is_selected = gail_tree_view_is_selected; iface->get_selected_rows = gail_tree_view_get_selected_rows; iface->add_row_selection = gail_tree_view_add_row_selection; iface->remove_row_selection = gail_tree_view_remove_row_selection; iface->get_column_extent_at = NULL; iface->get_row_extent_at = NULL; iface->get_row_header = gail_tree_view_get_row_header; iface->set_row_header = gail_tree_view_set_row_header; iface->get_column_header = gail_tree_view_get_column_header; iface->set_column_header = gail_tree_view_set_column_header; iface->get_caption = gail_tree_view_get_caption; iface->set_caption = gail_tree_view_set_caption; iface->get_summary = gail_tree_view_get_summary; iface->set_summary = gail_tree_view_set_summary; iface->get_row_description = gail_tree_view_get_row_description; iface->set_row_description = gail_tree_view_set_row_description; iface->get_column_description = gail_tree_view_get_column_description; iface->set_column_description = gail_tree_view_set_column_description; } static gint gail_tree_view_get_index_at (AtkTable *table, gint row, gint column) { GtkWidget *widget; GtkTreeView *tree_view; gint actual_column; gint n_cols, n_rows; GtkTreeIter iter; GtkTreePath *path; gint index; n_cols = atk_table_get_n_columns (table); n_rows = atk_table_get_n_rows (table); if (row >= n_rows || column >= n_cols) return -1; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table)); if (widget == NULL) /* State is defunct */ return -1; tree_view = GTK_TREE_VIEW (widget); actual_column = get_actual_column_number (tree_view, column); set_iter_nth_row (tree_view, &iter, row); path = gtk_tree_model_get_path (gtk_tree_view_get_model (tree_view), &iter); index = get_index (tree_view, path, actual_column); gtk_tree_path_free (path); return index; } static gint gail_tree_view_get_column_at_index (AtkTable *table, gint index) { GtkWidget *widget; GtkTreeView *tree_view; gint n_columns; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table)); if (widget == NULL) /* State is defunct */ return -1; tree_view = GTK_TREE_VIEW (widget); n_columns = get_n_actual_columns (tree_view); if (n_columns == 0) return 0; index = index % n_columns; return get_visible_column_number (tree_view, index); } static gint gail_tree_view_get_row_at_index (AtkTable *table, gint index) { GtkWidget *widget; GtkTreeView *tree_view; GtkTreePath *path; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table)); if (widget == NULL) /* State is defunct */ return -1; tree_view = GTK_TREE_VIEW (widget); if (get_path_column_from_index (tree_view, index, &path, NULL)) { gint row = get_row_from_tree_path (tree_view, path); gtk_tree_path_free (path); return row; } else return -1; } static AtkObject* gail_tree_view_table_ref_at (AtkTable *table, gint row, gint column) { gint index; index = gail_tree_view_get_index_at (table, row, column); if (index == -1) return NULL; return gail_tree_view_ref_child (ATK_OBJECT (table), index); } static gint gail_tree_view_get_n_rows (AtkTable *table) { GtkWidget *widget; GtkTreeView *tree_view; GtkTreeModel *tree_model; gint n_rows; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table)); if (widget == NULL) /* State is defunct */ return 0; tree_view = GTK_TREE_VIEW (widget); tree_model = gtk_tree_view_get_model (tree_view); if (gtk_tree_model_get_flags (tree_model) & GTK_TREE_MODEL_LIST_ONLY) /* * If working with a LIST store, then this is a faster way * to get the number of rows. */ n_rows = gtk_tree_model_iter_n_children (tree_model, NULL); else { GtkTreePath *root_tree; n_rows = 0; root_tree = gtk_tree_path_new_first (); iterate_thru_children (tree_view, tree_model, root_tree, NULL, &n_rows, 0); gtk_tree_path_free (root_tree); } return n_rows; } /* * The function get_n_actual_columns returns the number of columns in the * GtkTreeView. i.e. it include both visible and non-visible columns. */ static gint get_n_actual_columns (GtkTreeView *tree_view) { GList *columns; gint n_cols; columns = gtk_tree_view_get_columns (tree_view); n_cols = g_list_length (columns); g_list_free (columns); return n_cols; } static gint gail_tree_view_get_n_columns (AtkTable *table) { GtkWidget *widget; GtkTreeView *tree_view; GtkTreeViewColumn *tv_col; gint n_cols = 0; gint i = 0; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table)); if (widget == NULL) /* State is defunct */ return 0; tree_view = GTK_TREE_VIEW (widget); tv_col = gtk_tree_view_get_column (tree_view, i); while (tv_col != NULL) { if (gtk_tree_view_column_get_visible (tv_col)) n_cols++; i++; tv_col = gtk_tree_view_get_column (tree_view, i); } return n_cols; } static gboolean gail_tree_view_is_row_selected (AtkTable *table, gint row) { GtkWidget *widget; GtkTreeView *tree_view; GtkTreeSelection *selection; GtkTreeIter iter; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table)); if (widget == NULL) /* State is defunct */ return FALSE; if (row < 0) return FALSE; tree_view = GTK_TREE_VIEW (widget); selection = gtk_tree_view_get_selection (tree_view); set_iter_nth_row (tree_view, &iter, row); return gtk_tree_selection_iter_is_selected (selection, &iter); } static gboolean gail_tree_view_is_selected (AtkTable *table, gint row, gint column) { return gail_tree_view_is_row_selected (table, row); } static gint gail_tree_view_get_selected_rows (AtkTable *table, gint **rows_selected) { GtkWidget *widget; GtkTreeView *tree_view; GtkTreeModel *tree_model; GtkTreeIter iter; GtkTreeSelection *selection; GtkTreePath *tree_path; gint ret_val = 0; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table)); if (widget == NULL) /* State is defunct */ return 0; tree_view = GTK_TREE_VIEW (widget); selection = gtk_tree_view_get_selection (tree_view); switch (selection->type) { case GTK_SELECTION_SINGLE: case GTK_SELECTION_BROWSE: if (gtk_tree_selection_get_selected (selection, &tree_model, &iter)) { gint row; if (rows_selected) { *rows_selected = (gint *)g_malloc (sizeof(gint)); tree_path = gtk_tree_model_get_path (tree_model, &iter); row = get_row_from_tree_path (tree_view, tree_path); gtk_tree_path_free (tree_path); /* shouldn't ever happen */ g_return_val_if_fail (row != -1, 0); *rows_selected[0] = row; } ret_val = 1; } break; case GTK_SELECTION_MULTIPLE: { GPtrArray *array = g_ptr_array_new(); gtk_tree_selection_selected_foreach (selection, get_selected_rows, array); ret_val = array->len; if (rows_selected && ret_val) { gint i; *rows_selected = (gint *) g_malloc (ret_val * sizeof (gint)); for (i = 0; i < ret_val; i++) { gint row; tree_path = (GtkTreePath *) g_ptr_array_index (array, i); row = get_row_from_tree_path (tree_view, tree_path); gtk_tree_path_free (tree_path); (*rows_selected)[i] = row; } } g_ptr_array_free (array, FALSE); } break; case GTK_SELECTION_NONE: break; } return ret_val; } static gboolean gail_tree_view_add_row_selection (AtkTable *table, gint row) { GtkWidget *widget; GtkTreeView *tree_view; GtkTreeModel *tree_model; GtkTreeSelection *selection; GtkTreePath *tree_path; GtkTreeIter iter_to_row; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table)); if (widget == NULL) /* State is defunct */ return FALSE; if (!gail_tree_view_is_row_selected (table, row)) { tree_view = GTK_TREE_VIEW (widget); tree_model = gtk_tree_view_get_model (tree_view); selection = gtk_tree_view_get_selection (tree_view); if (gtk_tree_model_get_flags (tree_model) & GTK_TREE_MODEL_LIST_ONLY) { tree_path = gtk_tree_path_new (); gtk_tree_path_append_index (tree_path, row); gtk_tree_selection_select_path (selection,tree_path); gtk_tree_path_free (tree_path); } else { set_iter_nth_row (tree_view, &iter_to_row, row); if (&iter_to_row != NULL) gtk_tree_selection_select_iter (selection, &iter_to_row); else return FALSE; } } return gail_tree_view_is_row_selected (table, row); } static gboolean gail_tree_view_remove_row_selection (AtkTable *table, gint row) { GtkWidget *widget; GtkTreeView *tree_view; GtkTreeSelection *selection; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table)); if (widget == NULL) /* State is defunct */ return FALSE; tree_view = GTK_TREE_VIEW (widget); selection = gtk_tree_view_get_selection (tree_view); if (gail_tree_view_is_row_selected (table, row)) { gtk_tree_selection_unselect_all (selection); return TRUE; } else return FALSE; } static AtkObject* gail_tree_view_get_row_header (AtkTable *table, gint row) { GailTreeViewRowInfo *row_info; row_info = get_row_info (table, row); if (row_info) return row_info->header; else return NULL; } static void gail_tree_view_set_row_header (AtkTable *table, gint row, AtkObject *header) { set_row_data (table, row, header, NULL, TRUE); } static AtkObject* gail_tree_view_get_column_header (AtkTable *table, gint in_col) { GtkWidget *widget; GtkTreeView *tree_view; GtkTreeViewColumn *tv_col; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table)); if (widget == NULL) /* State is defunct */ return NULL; tree_view = GTK_TREE_VIEW (widget); tv_col = get_column (tree_view, in_col); return get_header_from_column (tv_col); } static void gail_tree_view_set_column_header (AtkTable *table, gint in_col, AtkObject *header) { GtkWidget *widget; GtkTreeView *tree_view; GtkTreeViewColumn *tv_col; AtkObject *rc; AtkPropertyValues values = { NULL }; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table)); if (widget == NULL) /* State is defunct */ return; tree_view = GTK_TREE_VIEW (widget); tv_col = get_column (tree_view, in_col); if (tv_col == NULL) return; rc = g_object_get_qdata (G_OBJECT (tv_col), quark_column_header_object); if (rc) g_object_unref (rc); g_object_set_qdata (G_OBJECT (tv_col), quark_column_header_object, header); if (header) g_object_ref (header); g_value_init (&values.new_value, G_TYPE_INT); g_value_set_int (&values.new_value, in_col); values.property_name = "accessible-table-column-header"; g_signal_emit_by_name (table, "property_change::accessible-table-column-header", &values, NULL); } static AtkObject* gail_tree_view_get_caption (AtkTable *table) { GailTreeView* obj = GAIL_TREE_VIEW (table); return obj->caption; } static void gail_tree_view_set_caption (AtkTable *table, AtkObject *caption) { GailTreeView* obj = GAIL_TREE_VIEW (table); AtkPropertyValues values = { NULL }; AtkObject *old_caption; old_caption = obj->caption; obj->caption = caption; if (obj->caption) g_object_ref (obj->caption); g_value_init (&values.old_value, G_TYPE_POINTER); g_value_set_pointer (&values.old_value, old_caption); g_value_init (&values.new_value, G_TYPE_POINTER); g_value_set_pointer (&values.new_value, obj->caption); values.property_name = "accessible-table-caption-object"; g_signal_emit_by_name (table, "property_change::accessible-table-caption-object", &values, NULL); if (old_caption) g_object_unref (old_caption); } static G_CONST_RETURN gchar* gail_tree_view_get_column_description (AtkTable *table, gint in_col) { GtkWidget *widget; GtkTreeView *tree_view; GtkTreeViewColumn *tv_col; gchar *rc; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table)); if (widget == NULL) /* State is defunct */ return NULL; tree_view = GTK_TREE_VIEW (widget); tv_col = get_column (tree_view, in_col); if (tv_col == NULL) return NULL; rc = g_object_get_qdata (G_OBJECT (tv_col), quark_column_desc_object); if (rc != NULL) return rc; else { gchar *title_text; g_object_get (tv_col, "title", &title_text, NULL); return title_text; } } static void gail_tree_view_set_column_description (AtkTable *table, gint in_col, const gchar *description) { GtkWidget *widget; GtkTreeView *tree_view; GtkTreeViewColumn *tv_col; AtkPropertyValues values = { NULL }; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table)); if (widget == NULL) /* State is defunct */ return; tree_view = GTK_TREE_VIEW (widget); tv_col = get_column (tree_view, in_col); if (tv_col == NULL) return; g_object_set_qdata (G_OBJECT (tv_col), quark_column_desc_object, g_strdup (description)); g_value_init (&values.new_value, G_TYPE_INT); g_value_set_int (&values.new_value, in_col); values.property_name = "accessible-table-column-description"; g_signal_emit_by_name (table, "property_change::accessible-table-column-description", &values, NULL); } static G_CONST_RETURN gchar* gail_tree_view_get_row_description (AtkTable *table, gint row) { GailTreeViewRowInfo *row_info; row_info = get_row_info (table, row); if (row_info) return row_info->description; else return NULL; } static void gail_tree_view_set_row_description (AtkTable *table, gint row, const gchar *description) { set_row_data (table, row, NULL, description, FALSE); } static AtkObject* gail_tree_view_get_summary (AtkTable *table) { GailTreeView* obj = GAIL_TREE_VIEW (table); return obj->summary; } static void gail_tree_view_set_summary (AtkTable *table, AtkObject *accessible) { GailTreeView* obj = GAIL_TREE_VIEW (table); AtkPropertyValues values = { NULL }; AtkObject *old_summary; old_summary = obj->summary; obj->summary = accessible; if (obj->summary) g_object_ref (obj->summary); g_value_init (&values.old_value, G_TYPE_POINTER); g_value_set_pointer (&values.old_value, old_summary); g_value_init (&values.new_value, G_TYPE_POINTER); g_value_set_pointer (&values.new_value, obj->summary); values.property_name = "accessible-table-summary"; g_signal_emit_by_name (table, "property_change::accessible-table-ummary", &values, NULL); if (old_summary) g_object_unref (old_summary); } static void set_row_data (AtkTable *table, gint row, AtkObject *header, const gchar *description, gboolean is_header) { GtkWidget *widget; GtkTreeView *tree_view; GtkTreeModel *tree_model; GailTreeView* obj = GAIL_TREE_VIEW (table); GailTreeViewRowInfo* row_info; GtkTreePath *path; GtkTreeIter iter; GArray *array; gboolean found = FALSE; gint i; AtkPropertyValues values = { NULL }; gchar *signal_name; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table)); if (widget == NULL) /* State is defunct */ return; tree_view = GTK_TREE_VIEW (widget); tree_model = gtk_tree_view_get_model (tree_view); set_iter_nth_row (tree_view, &iter, row); path = gtk_tree_model_get_path (tree_model, &iter); if (obj->row_data == NULL) obj->row_data = g_array_sized_new (FALSE, TRUE, sizeof(GailTreeViewRowInfo *), 0); array = obj->row_data; for (i = 0; i < array->len; i++) { GtkTreePath *row_path; row_info = g_array_index (array, GailTreeViewRowInfo*, i); row_path = gtk_tree_row_reference_get_path (row_info->row_ref); if (row_path != NULL) { if (path && gtk_tree_path_compare (row_path, path) == 0) found = TRUE; gtk_tree_path_free (row_path); if (found) { if (is_header) { if (row_info->header) g_object_unref (row_info->header); row_info->header = header; if (row_info->header) g_object_ref (row_info->header); } else { g_free (row_info->description); row_info->description = g_strdup (description); } break; } } } if (!found) { /* if not found */ row_info = g_malloc (sizeof(GailTreeViewRowInfo)); row_info->row_ref = gtk_tree_row_reference_new (tree_model, path); if (is_header) { row_info->header = header; if (row_info->header) g_object_ref (row_info->header); row_info->description = NULL; } else { row_info->header = NULL; row_info->description = g_strdup (description); } g_array_append_val (array, row_info); } g_value_init (&values.new_value, G_TYPE_INT); g_value_set_int (&values.new_value, row); if (is_header) { values.property_name = "accessible-table-row-header"; signal_name = "property_change::accessible-table-row-header"; } else { values.property_name = "accessible-table-row-description"; signal_name = "property-change::accessible-table-row-description"; } g_signal_emit_by_name (table, signal_name, &values, NULL); gtk_tree_path_free (path); } static GailTreeViewRowInfo* get_row_info (AtkTable *table, gint row) { GtkWidget *widget; GtkTreeView *tree_view; GtkTreeModel *tree_model; GailTreeView* obj = GAIL_TREE_VIEW (table); GtkTreePath *path; GtkTreeIter iter; GArray *array; GailTreeViewRowInfo *rc = NULL; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table)); if (widget == NULL) /* State is defunct */ return NULL; tree_view = GTK_TREE_VIEW (widget); tree_model = gtk_tree_view_get_model (tree_view); set_iter_nth_row (tree_view, &iter, row); path = gtk_tree_model_get_path (tree_model, &iter); array = obj->row_data; if (array != NULL) { GailTreeViewRowInfo *row_info; GtkTreePath *row_path; gint i; for (i = 0; i < array->len; i++) { row_info = g_array_index (array, GailTreeViewRowInfo*, i); row_path = gtk_tree_row_reference_get_path (row_info->row_ref); if (row_path != NULL) { if (path && gtk_tree_path_compare (row_path, path) == 0) rc = row_info; gtk_tree_path_free (row_path); if (rc != NULL) break; } } } gtk_tree_path_free (path); return rc; } /* atkselection.h */ static void atk_selection_interface_init (AtkSelectionIface *iface) { iface->add_selection = gail_tree_view_add_selection; iface->clear_selection = gail_tree_view_clear_selection; iface->ref_selection = gail_tree_view_ref_selection; iface->get_selection_count = gail_tree_view_get_selection_count; iface->is_child_selected = gail_tree_view_is_child_selected; } static gboolean gail_tree_view_add_selection (AtkSelection *selection, gint i) { AtkTable *table; gint n_columns; gint row; table = ATK_TABLE (selection); n_columns = gail_tree_view_get_n_columns (table); if (n_columns != 1) return FALSE; row = gail_tree_view_get_row_at_index (table, i); return gail_tree_view_add_row_selection (table, row); } static gboolean gail_tree_view_clear_selection (AtkSelection *selection) { GtkWidget *widget; GtkTreeView *tree_view; GtkTreeSelection *tree_selection; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (selection)); if (widget == NULL) /* State is defunct */ return FALSE; tree_view = GTK_TREE_VIEW (widget); tree_selection = gtk_tree_view_get_selection (tree_view); gtk_tree_selection_unselect_all (tree_selection); return TRUE; } static AtkObject* gail_tree_view_ref_selection (AtkSelection *selection, gint i) { AtkTable *table; gint row; gint n_selected; gint n_columns; gint *selected; table = ATK_TABLE (selection); n_columns = gail_tree_view_get_n_columns (table); n_selected = gail_tree_view_get_selected_rows (table, &selected); if (i >= n_columns * n_selected) return NULL; row = selected[i / n_columns]; g_free (selected); return gail_tree_view_table_ref_at (table, row, i % n_columns); } static gint gail_tree_view_get_selection_count (AtkSelection *selection) { AtkTable *table; gint n_selected; table = ATK_TABLE (selection); n_selected = gail_tree_view_get_selected_rows (table, NULL); if (n_selected > 0) n_selected *= gail_tree_view_get_n_columns (table); return n_selected; } static gboolean gail_tree_view_is_child_selected (AtkSelection *selection, gint i) { GtkWidget *widget; gint row; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (selection)); if (widget == NULL) /* State is defunct */ return FALSE; row = atk_table_get_row_at_index (ATK_TABLE (selection), i); return gail_tree_view_is_row_selected (ATK_TABLE (selection), row); } static void gail_cell_parent_interface_init (GailCellParentIface *iface) { iface->get_cell_extents = gail_tree_view_get_cell_extents; iface->get_cell_area = gail_tree_view_get_cell_area; iface->grab_focus = gail_tree_view_grab_cell_focus; } static void gail_tree_view_get_cell_extents (GailCellParent *parent, GailCell *cell, gint *x, gint *y, gint *width, gint *height, AtkCoordType coord_type) { GtkWidget *widget; GtkTreeView *tree_view; GdkWindow *bin_window; GdkRectangle cell_rect; gint w_x, w_y; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (parent)); if (widget == NULL) /* State is defunct */ return; tree_view = GTK_TREE_VIEW (widget); gail_tree_view_get_cell_area (parent, cell, &cell_rect); bin_window = gtk_tree_view_get_bin_window (tree_view); gdk_window_get_origin (bin_window, &w_x, &w_y); if (coord_type == ATK_XY_WINDOW) { GdkWindow *window; gint x_toplevel, y_toplevel; window = gdk_window_get_toplevel (bin_window); gdk_window_get_origin (window, &x_toplevel, &y_toplevel); w_x -= x_toplevel; w_y -= y_toplevel; } *width = cell_rect.width; *height = cell_rect.height; if (is_cell_showing (tree_view, &cell_rect)) { *x = cell_rect.x + w_x; *y = cell_rect.y + w_y; } else { *x = G_MININT; *y = G_MININT; } } #define EXTRA_EXPANDER_PADDING 4 static void gail_tree_view_get_cell_area (GailCellParent *parent, GailCell *cell, GdkRectangle *cell_rect) { GtkWidget *widget; GtkTreeView *tree_view; GtkTreeViewColumn *tv_col; GtkTreePath *path; AtkObject *parent_cell; GailTreeViewCellInfo *cell_info; GailCell *top_cell; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (parent)); if (widget == NULL) /* State is defunct */ return; tree_view = GTK_TREE_VIEW (widget); parent_cell = atk_object_get_parent (ATK_OBJECT (cell)); if (parent_cell != ATK_OBJECT (parent)) { /* * GailCell is in a GailContainerCell */ top_cell = GAIL_CELL (parent_cell); } else { top_cell = cell; } cell_info = find_cell_info (GAIL_TREE_VIEW (parent), top_cell, NULL, TRUE); gail_return_if_fail (cell_info); gail_return_if_fail (cell_info->cell_col_ref); gail_return_if_fail (cell_info->cell_row_ref); path = gtk_tree_row_reference_get_path (cell_info->cell_row_ref); tv_col = cell_info->cell_col_ref; if (path && cell_info->in_use) { GtkTreeViewColumn *expander_column; gint focus_line_width; gtk_tree_view_get_cell_area (tree_view, path, tv_col, cell_rect); expander_column = gtk_tree_view_get_expander_column (tree_view); if (expander_column == tv_col) { gint expander_size; gtk_widget_style_get (widget, "expander_size", &expander_size, NULL); cell_rect->x += expander_size + EXTRA_EXPANDER_PADDING; cell_rect->width -= expander_size + EXTRA_EXPANDER_PADDING; } gtk_widget_style_get (widget, "focus-line-width", &focus_line_width, NULL); cell_rect->x += focus_line_width; cell_rect->width -= 2 * focus_line_width; gtk_tree_path_free (path); /* * A column has more than one renderer so we find the position and width * of each. */ if (top_cell != cell) { gint cell_index; gboolean found; gint cell_start; gint cell_width; GList *renderers; GtkCellRenderer *renderer; cell_index = atk_object_get_index_in_parent (ATK_OBJECT (cell)); renderers = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (tv_col)); renderer = g_list_nth_data (renderers, cell_index); found = gtk_tree_view_column_cell_get_position (tv_col, renderer, &cell_start, &cell_width); if (found) { cell_rect->x += cell_start; cell_rect->width = cell_width; } g_list_free (renderers); } } } static gboolean gail_tree_view_grab_cell_focus (GailCellParent *parent, GailCell *cell) { GtkWidget *widget; GtkTreeView *tree_view; GtkTreeViewColumn *tv_col; GtkTreePath *path; AtkObject *parent_cell; AtkObject *cell_object; GailTreeViewCellInfo *cell_info; GtkCellRenderer *renderer = NULL; GtkWidget *toplevel; gint index; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (parent)); if (widget == NULL) /* State is defunct */ return FALSE; tree_view = GTK_TREE_VIEW (widget); cell_info = find_cell_info (GAIL_TREE_VIEW (parent), cell, NULL, TRUE); gail_return_val_if_fail (cell_info, FALSE); gail_return_val_if_fail (cell_info->cell_col_ref, FALSE); gail_return_val_if_fail (cell_info->cell_row_ref, FALSE); cell_object = ATK_OBJECT (cell); parent_cell = atk_object_get_parent (cell_object); tv_col = cell_info->cell_col_ref; if (parent_cell != ATK_OBJECT (parent)) { /* * GailCell is in a GailContainerCell. * The GtkTreeViewColumn has multiple renderers; * find the corresponding one. */ GList *renderers; renderers = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (tv_col)); if (cell_info->in_use) { index = atk_object_get_index_in_parent (cell_object); renderer = g_list_nth_data (renderers, index); } g_list_free (renderers); } path = gtk_tree_row_reference_get_path (cell_info->cell_row_ref); if (path && cell_info->in_use) { if (renderer) gtk_tree_view_set_cursor_on_cell (tree_view, path, tv_col, renderer, FALSE); else gtk_tree_view_set_cursor (tree_view, path, tv_col, FALSE); gtk_tree_path_free (path); gtk_widget_grab_focus (widget); toplevel = gtk_widget_get_toplevel (widget); if (gtk_widget_is_toplevel (toplevel)) { #ifdef GDK_WINDOWING_X11 gtk_window_present_with_time (GTK_WINDOW (toplevel), gdk_x11_get_server_time (widget->window)); #else gtk_window_present (GTK_WINDOW (toplevel)); #endif } return TRUE; } else return FALSE; } /* signal handling */ static gboolean gail_tree_view_expand_row_gtk (GtkTreeView *tree_view, GtkTreeIter *iter, GtkTreePath *path) { AtkObject *atk_obj; GailTreeView *gailview; g_assert (GTK_IS_TREE_VIEW (tree_view)); atk_obj = gtk_widget_get_accessible (GTK_WIDGET (tree_view)); g_assert (GAIL_IS_TREE_VIEW (atk_obj)); gailview = GAIL_TREE_VIEW (atk_obj); /* * The visible rectangle has not been updated when this signal is emitted * so we process the signal when the GTK processing is completed */ /* this seems wrong since it overwrites any other pending expand handlers... */ gailview->idle_expand_path = gtk_tree_path_copy (path); if (gailview->idle_expand_id) g_source_remove (gailview->idle_expand_id); gailview->idle_expand_id = gdk_threads_add_idle (idle_expand_row, gailview); return FALSE; } static gint idle_expand_row (gpointer data) { GailTreeView *gailview = data; GtkTreePath *path; GtkTreeView *tree_view; GtkTreeIter iter; GtkTreeModel *tree_model; gint n_inserted, row; gailview->idle_expand_id = 0; path = gailview->idle_expand_path; tree_view = GTK_TREE_VIEW (gtk_accessible_get_widget (GTK_ACCESSIBLE (gailview))); g_assert (GTK_IS_TREE_VIEW (tree_view)); tree_model = gtk_tree_view_get_model(tree_view); if (!tree_model) return FALSE; if (!path || !gtk_tree_model_get_iter (tree_model, &iter, path)) return FALSE; /* * Update visibility of cells below expansion row */ traverse_cells (gailview, path, FALSE, FALSE); /* * Figure out number of visible children, the following test * should not fail */ if (gtk_tree_model_iter_has_child (tree_model, &iter)) { GtkTreePath *path_copy; /* * By passing path into this function, we find the number of * visible children of path. */ path_copy = gtk_tree_path_copy (path); gtk_tree_path_append_index(path_copy, 0); n_inserted = 0; iterate_thru_children (tree_view, tree_model, path_copy, NULL, &n_inserted, 0); gtk_tree_path_free (path_copy); } else { /* We can get here if the row expanded callback deleted the row */ return FALSE; } /* Set expand state */ set_expand_state (tree_view, tree_model, gailview, path, TRUE); row = get_row_from_tree_path (tree_view, path); /* shouldn't ever happen */ if (row == -1) g_assert_not_reached (); /* Must add 1 because the "added rows" are below the row being expanded */ row += 1; g_signal_emit_by_name (gailview, "row_inserted", row, n_inserted); gailview->idle_expand_path = NULL; gtk_tree_path_free (path); return FALSE; } static gboolean gail_tree_view_collapse_row_gtk (GtkTreeView *tree_view, GtkTreeIter *iter, GtkTreePath *path) { GtkTreeModel *tree_model; AtkObject *atk_obj = gtk_widget_get_accessible (GTK_WIDGET (tree_view)); GailTreeView *gailview = GAIL_TREE_VIEW (atk_obj); gint row; tree_model = gtk_tree_view_get_model (tree_view); clean_rows (gailview); /* * Update visibility of cells below collapsed row */ traverse_cells (gailview, path, FALSE, FALSE); /* Set collapse state */ set_expand_state (tree_view, tree_model, gailview, path, FALSE); gail_return_val_if_fail (gailview->n_children_deleted, FALSE); row = get_row_from_tree_path (tree_view, path); gail_return_val_if_fail (row != -1, FALSE); g_signal_emit_by_name (atk_obj, "row_deleted", row, gailview->n_children_deleted); gailview->n_children_deleted = 0; return FALSE; } static void gail_tree_view_size_allocate_gtk (GtkWidget *widget, GtkAllocation *allocation) { AtkObject *atk_obj = gtk_widget_get_accessible (widget); GailTreeView *gailview = GAIL_TREE_VIEW (atk_obj); /* * If the size allocation changes, the visibility of cells may change so * update the cells visibility. */ traverse_cells (gailview, NULL, FALSE, FALSE); } static void gail_tree_view_set_scroll_adjustments (GtkWidget *widget, GtkAdjustment *hadj, GtkAdjustment *vadj) { AtkObject *atk_obj = gtk_widget_get_accessible (widget); GailTreeView *gailview = GAIL_TREE_VIEW (atk_obj); GtkAdjustment *adj; g_object_get (widget, hadjustment, &adj, NULL); if (gailview->old_hadj != adj) { g_signal_handlers_disconnect_by_func (gailview->old_hadj, (gpointer) adjustment_changed, widget); gailview->old_hadj = adj; g_object_add_weak_pointer (G_OBJECT (gailview->old_hadj), (gpointer *)&gailview->old_hadj); g_signal_connect (adj, "value_changed", G_CALLBACK (adjustment_changed), widget); } g_object_get (widget, vadjustment, &adj, NULL); if (gailview->old_vadj != adj) { g_signal_handlers_disconnect_by_func (gailview->old_vadj, (gpointer) adjustment_changed, widget); gailview->old_vadj = adj; g_object_add_weak_pointer (G_OBJECT (gailview->old_vadj), (gpointer *)&gailview->old_vadj); g_signal_connect (adj, "value_changed", G_CALLBACK (adjustment_changed), widget); } } static void gail_tree_view_changed_gtk (GtkTreeSelection *selection, gpointer data) { GailTreeView *gailview; GtkTreeView *tree_view; GtkWidget *widget; GList *cell_list; GList *l; GailTreeViewCellInfo *info; GtkTreeSelection *tree_selection; GtkTreePath *path; gailview = GAIL_TREE_VIEW (data); cell_list = gailview->cell_data; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (gailview)); if (widget == NULL) /* * destroy signal emitted for widget */ return; tree_view = GTK_TREE_VIEW (widget); tree_selection = gtk_tree_view_get_selection (tree_view); clean_rows (gailview); for (l = cell_list; l; l = l->next) { info = (GailTreeViewCellInfo *) (l->data); if (info->in_use) { gail_cell_remove_state (info->cell, ATK_STATE_SELECTED, TRUE); path = gtk_tree_row_reference_get_path (info->cell_row_ref); if (path && gtk_tree_selection_path_is_selected (tree_selection, path)) gail_cell_add_state (info->cell, ATK_STATE_SELECTED, TRUE); gtk_tree_path_free (path); } } if (gtk_widget_get_realized (widget)) g_signal_emit_by_name (gailview, "selection_changed"); } static void columns_changed (GtkTreeView *tree_view) { AtkObject *atk_obj = gtk_widget_get_accessible (GTK_WIDGET(tree_view)); GailTreeView *gailview = GAIL_TREE_VIEW (atk_obj); GList *tv_cols, *tmp_list; gboolean column_found; gboolean move_found = FALSE; gboolean stale_set = FALSE; gint column_count = 0; gint i; /* * This function must determine if the change is an add, delete or * a move based upon its cache of TreeViewColumns in * gailview->col_data */ tv_cols = gtk_tree_view_get_columns (tree_view); /* check for adds or moves */ for (tmp_list = tv_cols; tmp_list; tmp_list = tmp_list->next) { column_found = FALSE; for (i = 0; i < gailview->col_data->len; i++) { if ((GtkTreeViewColumn *)tmp_list->data == (GtkTreeViewColumn *)g_array_index (gailview->col_data, GtkTreeViewColumn *, i)) { column_found = TRUE; /* If the column isn't in the same position, a move happened */ if (!move_found && i != column_count) { if (!stale_set) { /* Set all rows to ATK_STATE_STALE */ traverse_cells (gailview, NULL, TRUE, FALSE); stale_set = TRUE; } /* Just emit one column reordered signal when a move happens */ g_signal_emit_by_name (atk_obj, "column_reordered"); move_found = TRUE; } break; } } /* * If column_found is FALSE, then an insert happened for column * number column_count */ if (!column_found) { gint n_cols, n_rows, row; if (!stale_set) { /* Set all rows to ATK_STATE_STALE */ traverse_cells (gailview, NULL, TRUE, FALSE); stale_set = TRUE; } /* Generate column-inserted signal */ g_signal_emit_by_name (atk_obj, "column_inserted", column_count, 1); /* Generate children-changed signals */ n_rows = get_row_count (gtk_tree_view_get_model (tree_view)); n_cols = get_n_actual_columns (tree_view); for (row = 0; row < n_rows; row++) { /* * Pass NULL as the child object, i.e. 4th argument. */ g_signal_emit_by_name (atk_obj, "children_changed::add", ((row * n_cols) + column_count), NULL, NULL); } } column_count++; } /* check for deletes */ for (i = 0; i < gailview->col_data->len; i++) { column_found = FALSE; for (tmp_list = tv_cols; tmp_list; tmp_list = tmp_list->next) { if ((GtkTreeViewColumn *)tmp_list->data == (GtkTreeViewColumn *)g_array_index (gailview->col_data, GtkTreeViewColumn *, i)) { column_found = TRUE; break; } } /* * If column_found is FALSE, then a delete happened for column * number i */ if (!column_found) { gint n_rows, n_cols, row; clean_cols (gailview, (GtkTreeViewColumn *)g_array_index (gailview->col_data, GtkTreeViewColumn *, i)); if (!stale_set) { /* Set all rows to ATK_STATE_STALE */ traverse_cells (gailview, NULL, TRUE, FALSE); stale_set = TRUE; } /* Generate column-deleted signal */ g_signal_emit_by_name (atk_obj, "column_deleted", i, 1); /* Generate children-changed signals */ n_rows = get_row_count (gtk_tree_view_get_model (tree_view)); n_cols = get_n_actual_columns (tree_view); for (row = 0; row < n_rows; row++) { /* * Pass NULL as the child object, 4th argument. */ g_signal_emit_by_name (atk_obj, "children_changed::remove", ((row * n_cols) + column_count), NULL, NULL); } } } /* rebuild the array */ g_array_free (gailview->col_data, TRUE); gailview->col_data = g_array_sized_new (FALSE, TRUE, sizeof(GtkTreeViewColumn *), 0); for (tmp_list = tv_cols; tmp_list; tmp_list = tmp_list->next) g_array_append_val (gailview->col_data, tmp_list->data); g_list_free (tv_cols); } static void cursor_changed (GtkTreeView *tree_view) { GailTreeView *gailview; gailview = GAIL_TREE_VIEW (gtk_widget_get_accessible (GTK_WIDGET (tree_view))); if (gailview->idle_cursor_changed_id != 0) return; /* * We notify the focus change in a idle handler so that the processing * of the cursor change is completed when the focus handler is called. * This will allow actions to be called in the focus handler */ gailview->idle_cursor_changed_id = gdk_threads_add_idle (idle_cursor_changed, gailview); } static gint idle_cursor_changed (gpointer data) { GailTreeView *gail_tree_view = GAIL_TREE_VIEW (data); GtkTreeView *tree_view; GtkWidget *widget; AtkObject *cell; gail_tree_view->idle_cursor_changed_id = 0; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (gail_tree_view)); /* * Widget has been deleted */ if (widget == NULL) return FALSE; tree_view = GTK_TREE_VIEW (widget); cell = gail_tree_view_ref_focus_cell (tree_view); if (cell) { if (cell != gail_tree_view->focus_cell) { if (gail_tree_view->focus_cell) { gail_cell_remove_state (GAIL_CELL (gail_tree_view->focus_cell), ATK_STATE_ACTIVE, FALSE); gail_cell_remove_state (GAIL_CELL (gail_tree_view->focus_cell), ATK_STATE_FOCUSED, FALSE); g_object_unref (gail_tree_view->focus_cell); } gail_tree_view->focus_cell = cell; if (gtk_widget_has_focus (widget)) { gail_cell_add_state (GAIL_CELL (cell), ATK_STATE_ACTIVE, FALSE); gail_cell_add_state (GAIL_CELL (cell), ATK_STATE_FOCUSED, FALSE); } g_signal_emit_by_name (gail_tree_view, "active-descendant-changed", cell); } else g_object_unref (cell); } return FALSE; } static gboolean focus_in (GtkWidget *widget) { GtkTreeView *tree_view; GailTreeView *gail_tree_view; AtkStateSet *state_set; AtkObject *cell; tree_view = GTK_TREE_VIEW (widget); gail_tree_view = GAIL_TREE_VIEW (gtk_widget_get_accessible (widget)); if (gail_tree_view->focus_cell == NULL) { cell = gail_tree_view_ref_focus_cell (tree_view); if (cell) { state_set = atk_object_ref_state_set (cell); if (state_set) { if (!atk_state_set_contains_state (state_set, ATK_STATE_FOCUSED)) { gail_cell_add_state (GAIL_CELL (cell), ATK_STATE_ACTIVE, FALSE); gail_tree_view->focus_cell = cell; gail_cell_add_state (GAIL_CELL (cell), ATK_STATE_FOCUSED, FALSE); g_signal_emit_by_name (gail_tree_view, "active-descendant-changed", cell); } g_object_unref (state_set); } } } return FALSE; } static gboolean focus_out (GtkWidget *widget) { GailTreeView *gail_tree_view; gail_tree_view = GAIL_TREE_VIEW (gtk_widget_get_accessible (widget)); if (gail_tree_view->focus_cell) { gail_cell_remove_state (GAIL_CELL (gail_tree_view->focus_cell), ATK_STATE_ACTIVE, FALSE); gail_cell_remove_state (GAIL_CELL (gail_tree_view->focus_cell), ATK_STATE_FOCUSED, FALSE); g_object_unref (gail_tree_view->focus_cell); gail_tree_view->focus_cell = NULL; } return FALSE; } static void model_row_changed (GtkTreeModel *tree_model, GtkTreePath *path, GtkTreeIter *iter, gpointer user_data) { GtkTreeView *tree_view = GTK_TREE_VIEW(user_data); GailTreeView *gailview; GtkTreePath *cell_path; GList *l; GailTreeViewCellInfo *cell_info; gailview = GAIL_TREE_VIEW (gtk_widget_get_accessible (GTK_WIDGET (tree_view))); /* Loop through our cached cells */ /* Must loop through them all */ for (l = gailview->cell_data; l; l = l->next) { cell_info = (GailTreeViewCellInfo *) l->data; if (cell_info->in_use) { cell_path = gtk_tree_row_reference_get_path (cell_info->cell_row_ref); if (cell_path != NULL) { if (path && gtk_tree_path_compare (cell_path, path) == 0) { if (GAIL_IS_RENDERER_CELL (cell_info->cell)) { update_cell_value (GAIL_RENDERER_CELL (cell_info->cell), gailview, TRUE); } } gtk_tree_path_free (cell_path); } } } g_signal_emit_by_name (gailview, "visible-data-changed"); } static void column_visibility_changed (GObject *object, GParamSpec *pspec, gpointer user_data) { if (strcmp (pspec->name, "visible") == 0) { /* * A column has been made visible or invisible * * We update our cache of cells and emit model_changed signal */ GtkTreeView *tree_view = (GtkTreeView *)user_data; GailTreeView *gailview; GList *l; GailTreeViewCellInfo *cell_info; GtkTreeViewColumn *this_col = GTK_TREE_VIEW_COLUMN (object); GtkTreeViewColumn *tv_col; gailview = GAIL_TREE_VIEW (gtk_widget_get_accessible (GTK_WIDGET (tree_view)) ); g_signal_emit_by_name (gailview, "model_changed"); for (l = gailview->cell_data; l; l = l->next) { cell_info = (GailTreeViewCellInfo *) l->data; if (cell_info->in_use) { tv_col = cell_info->cell_col_ref; if (tv_col == this_col) { GtkTreePath *row_path; row_path = gtk_tree_row_reference_get_path (cell_info->cell_row_ref); if (GAIL_IS_RENDERER_CELL (cell_info->cell)) { if (gtk_tree_view_column_get_visible (tv_col)) set_cell_visibility (tree_view, cell_info->cell, tv_col, row_path, FALSE); else { gail_cell_remove_state (cell_info->cell, ATK_STATE_VISIBLE, TRUE); gail_cell_remove_state (cell_info->cell, ATK_STATE_SHOWING, TRUE); } } gtk_tree_path_free (row_path); } } } } } /* * This is the signal handler for the "destroy" signal for a GtkTreeViewColumn * * We check whether we have stored column description or column header * and if so we get rid of it. */ static void column_destroy (GtkObject *obj) { GtkTreeViewColumn *tv_col = GTK_TREE_VIEW_COLUMN (obj); AtkObject *header; gchar *desc; header = g_object_get_qdata (G_OBJECT (tv_col), quark_column_header_object); if (header) g_object_unref (header); desc = g_object_get_qdata (G_OBJECT (tv_col), quark_column_desc_object); g_free (desc); } static void model_row_inserted (GtkTreeModel *tree_model, GtkTreePath *path, GtkTreeIter *iter, gpointer user_data) { GtkTreeView *tree_view = (GtkTreeView *)user_data; GtkTreePath *path_copy; AtkObject *atk_obj = gtk_widget_get_accessible (GTK_WIDGET (tree_view)); GailTreeView *gailview = GAIL_TREE_VIEW (atk_obj); gint row, n_inserted, child_row; if (gailview->idle_expand_id) { g_source_remove (gailview->idle_expand_id); gailview->idle_expand_id = 0; /* don't do this if the insertion precedes the idle path, since it will now be invalid */ if (path && gailview->idle_expand_path && (gtk_tree_path_compare (path, gailview->idle_expand_path) > 0)) set_expand_state (tree_view, tree_model, gailview, gailview->idle_expand_path, FALSE); if (gailview->idle_expand_path) gtk_tree_path_free (gailview->idle_expand_path); } /* Check to see if row is visible */ row = get_row_from_tree_path (tree_view, path); /* * A row insert is not necessarily visible. For example, * a row can be draged & dropped into another row, which * causes an insert on the model that isn't visible in the * view. Only generate a signal if the inserted row is * visible. */ if (row != -1) { GtkTreeIter iter; gint n_cols, col; gtk_tree_model_get_iter (tree_model, &iter, path); /* Figure out number of visible children. */ if (gtk_tree_model_iter_has_child (tree_model, &iter)) { /* * By passing path into this function, we find the number of * visible children of path. */ n_inserted = 0; iterate_thru_children (tree_view, tree_model, path, NULL, &n_inserted, 0); /* Must add one to include the row that is being added */ n_inserted++; } else n_inserted = 1; /* Set rows below the inserted row to ATK_STATE_STALE */ traverse_cells (gailview, path, TRUE, TRUE); /* Generate row-inserted signal */ g_signal_emit_by_name (atk_obj, "row_inserted", row, n_inserted); /* Generate children-changed signals */ n_cols = gail_tree_view_get_n_columns (ATK_TABLE (atk_obj)); for (child_row = row; child_row < (row + n_inserted); child_row++) { for (col = 0; col < n_cols; col++) { /* * Pass NULL as the child object, i.e. 4th argument */ g_signal_emit_by_name (atk_obj, "children_changed::add", ((row * n_cols) + col), NULL, NULL); } } } else { /* * The row has been inserted inside another row. This can * cause a row that previously couldn't be expanded to now * be expandable. */ path_copy = gtk_tree_path_copy (path); gtk_tree_path_up (path_copy); set_expand_state (tree_view, tree_model, gailview, path_copy, TRUE); gtk_tree_path_free (path_copy); } } static void model_row_deleted (GtkTreeModel *tree_model, GtkTreePath *path, gpointer user_data) { GtkTreeView *tree_view; GtkTreePath *path_copy; AtkObject *atk_obj; GailTreeView *gailview; gint row, col, n_cols; tree_view = (GtkTreeView *)user_data; atk_obj = gtk_widget_get_accessible (GTK_WIDGET (tree_view)); gailview = GAIL_TREE_VIEW (atk_obj); if (gailview->idle_expand_id) { g_source_remove (gailview->idle_expand_id); gtk_tree_path_free (gailview->idle_expand_path); gailview->idle_expand_id = 0; } /* Check to see if row is visible */ clean_rows (gailview); /* Set rows at or below the specified row to ATK_STATE_STALE */ traverse_cells (gailview, path, TRUE, TRUE); /* * If deleting a row with a depth > 1, then this may affect the * expansion/contraction of its parent(s). Make sure this is * handled. */ if (gtk_tree_path_get_depth (path) > 1) { path_copy = gtk_tree_path_copy (path); gtk_tree_path_up (path_copy); set_expand_state (tree_view, tree_model, gailview, path_copy, TRUE); gtk_tree_path_free (path_copy); } row = get_row_from_tree_path (tree_view, path); /* * If the row which is deleted is not visible because it is a child of * a collapsed row then row will be -1 */ if (row > 0) g_signal_emit_by_name (atk_obj, "row_deleted", row, gailview->n_children_deleted + 1); gailview->n_children_deleted = 0; /* Generate children-changed signals */ n_cols = get_n_actual_columns (tree_view); for (col = 0; col < n_cols; col++) { /* * Pass NULL as the child object, 4th argument. */ g_signal_emit_by_name (atk_obj, "children_changed::remove", ((row * n_cols) + col), NULL, NULL); } } /* * This function gets called when a row is deleted or when rows are * removed from the view due to a collapse event. Note that the * count is the number of visible *children* of the deleted row, * so it does not include the row being deleted. * * As this function is called before the rows are removed we just note the * number of rows and then deal with it when we get a notification that * rows were deleted or collapsed. */ static void destroy_count_func (GtkTreeView *tree_view, GtkTreePath *path, gint count, gpointer user_data) { AtkObject *atk_obj = gtk_widget_get_accessible (GTK_WIDGET (tree_view)); GailTreeView *gailview = GAIL_TREE_VIEW (atk_obj); gail_return_if_fail (gailview->n_children_deleted == 0); gailview->n_children_deleted = count; } static void model_rows_reordered (GtkTreeModel *tree_model, GtkTreePath *path, GtkTreeIter *iter, gint *new_order, gpointer user_data) { GtkTreeView *tree_view = (GtkTreeView *)user_data; AtkObject *atk_obj = gtk_widget_get_accessible (GTK_WIDGET (tree_view)); GailTreeView *gailview = GAIL_TREE_VIEW (atk_obj); if (gailview->idle_expand_id) { g_source_remove (gailview->idle_expand_id); gtk_tree_path_free (gailview->idle_expand_path); gailview->idle_expand_id = 0; } traverse_cells (gailview, NULL, TRUE, FALSE); g_signal_emit_by_name (atk_obj, "row_reordered"); } static void adjustment_changed (GtkAdjustment *adjustment, GtkTreeView *tree_view) { AtkObject *atk_obj; GailTreeView* obj; /* * The scrollbars have changed */ atk_obj = gtk_widget_get_accessible (GTK_WIDGET (tree_view)); obj = GAIL_TREE_VIEW (atk_obj); traverse_cells (obj, NULL, FALSE, FALSE); } static void set_cell_visibility (GtkTreeView *tree_view, GailCell *cell, GtkTreeViewColumn *tv_col, GtkTreePath *tree_path, gboolean emit_signal) { GdkRectangle cell_rect; /* Get these three values in tree coords */ if (gtk_widget_get_realized (GTK_WIDGET (tree_view))) gtk_tree_view_get_cell_area (tree_view, tree_path, tv_col, &cell_rect); else cell_rect.height = 0; if (cell_rect.height > 0) { /* * The height will be zero for a cell for which an antecedent is not * expanded */ gail_cell_add_state (cell, ATK_STATE_VISIBLE, emit_signal); if (is_cell_showing (tree_view, &cell_rect)) gail_cell_add_state (cell, ATK_STATE_SHOWING, emit_signal); else gail_cell_remove_state (cell, ATK_STATE_SHOWING, emit_signal); } else { gail_cell_remove_state (cell, ATK_STATE_VISIBLE, emit_signal); gail_cell_remove_state (cell, ATK_STATE_SHOWING, emit_signal); } } static gboolean is_cell_showing (GtkTreeView *tree_view, GdkRectangle *cell_rect) { GdkRectangle rect, *visible_rect; GdkRectangle rect1, *tree_cell_rect; gint bx, by; gboolean is_showing; /* * A cell is considered "SHOWING" if any part of the cell is in the visible * area. Other ways we could do this is by a cell's midpoint or if the cell * is fully in the visible range. Since we have the cell_rect x,y,width,height * of the cell, any of these is easy to compute. * * It is assumed that cell's rectangle is in widget coordinates so we * must transform to tree cordinates. */ visible_rect = ▭ tree_cell_rect = &rect1; tree_cell_rect->x = cell_rect->x; tree_cell_rect->y = cell_rect->y; tree_cell_rect->width = cell_rect->width; tree_cell_rect->height = cell_rect->height; gtk_tree_view_get_visible_rect (tree_view, visible_rect); gtk_tree_view_convert_tree_to_bin_window_coords (tree_view, visible_rect->x, visible_rect->y, &bx, &by); if (((tree_cell_rect->x + tree_cell_rect->width) < bx) || ((tree_cell_rect->y + tree_cell_rect->height) < by) || (tree_cell_rect->x > (bx + visible_rect->width)) || (tree_cell_rect->y > (by + visible_rect->height))) is_showing = FALSE; else is_showing = TRUE; return is_showing; } /* Misc Public */ /* * This function is called when a cell's flyweight is created in * gail_tree_view_table_ref_at with emit_change_signal set to FALSE * and in model_row_changed() on receipt of "row-changed" signal when * emit_change_signal is set to TRUE */ static gboolean update_cell_value (GailRendererCell *renderer_cell, GailTreeView *gailview, gboolean emit_change_signal) { GailTreeViewCellInfo *cell_info; GtkTreeView *tree_view; GtkTreeModel *tree_model; GtkTreePath *path; GtkTreeIter iter; GList *renderers, *cur_renderer; GParamSpec *spec; GailRendererCellClass *gail_renderer_cell_class; GtkCellRendererClass *gtk_cell_renderer_class; GailCell *cell; gchar **prop_list; AtkObject *parent; gboolean is_expander, is_expanded; gail_renderer_cell_class = GAIL_RENDERER_CELL_GET_CLASS (renderer_cell); if (renderer_cell->renderer) gtk_cell_renderer_class = GTK_CELL_RENDERER_GET_CLASS (renderer_cell->renderer); else gtk_cell_renderer_class = NULL; prop_list = gail_renderer_cell_class->property_list; cell = GAIL_CELL (renderer_cell); cell_info = find_cell_info (gailview, cell, NULL, TRUE); gail_return_val_if_fail (cell_info, FALSE); gail_return_val_if_fail (cell_info->cell_col_ref, FALSE); gail_return_val_if_fail (cell_info->cell_row_ref, FALSE); if (emit_change_signal && cell_info->in_use) { tree_view = GTK_TREE_VIEW (gtk_accessible_get_widget (GTK_ACCESSIBLE (gailview))); tree_model = gtk_tree_view_get_model (tree_view); path = gtk_tree_row_reference_get_path (cell_info->cell_row_ref); if (path == NULL) return FALSE; gtk_tree_model_get_iter (tree_model, &iter, path); is_expander = FALSE; is_expanded = FALSE; if (gtk_tree_model_iter_has_child (tree_model, &iter)) { GtkTreeViewColumn *expander_tv; expander_tv = gtk_tree_view_get_expander_column (tree_view); if (expander_tv == cell_info->cell_col_ref) { is_expander = TRUE; is_expanded = gtk_tree_view_row_expanded (tree_view, path); } } gtk_tree_path_free (path); gtk_tree_view_column_cell_set_cell_data (cell_info->cell_col_ref, tree_model, &iter, is_expander, is_expanded); } renderers = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (cell_info->cell_col_ref)); gail_return_val_if_fail (renderers, FALSE); /* * If the cell is in a container, it's index is used to find the renderer * in the list */ /* * Otherwise, we assume that the cell is represented by the first renderer * in the list */ if (cell_info->in_use) { parent = atk_object_get_parent (ATK_OBJECT (cell)); if (!ATK_IS_OBJECT (cell)) g_on_error_query (NULL); if (GAIL_IS_CONTAINER_CELL (parent)) cur_renderer = g_list_nth (renderers, cell->index); else cur_renderer = renderers; } else { return FALSE; } gail_return_val_if_fail (cur_renderer != NULL, FALSE); if (gtk_cell_renderer_class) { while (*prop_list) { spec = g_object_class_find_property (G_OBJECT_CLASS (gtk_cell_renderer_class), *prop_list); if (spec != NULL) { GValue value = { 0, }; g_value_init (&value, spec->value_type); g_object_get_property (cur_renderer->data, *prop_list, &value); g_object_set_property (G_OBJECT (renderer_cell->renderer), *prop_list, &value); g_value_unset(&value); } else g_warning ("Invalid property: %s\n", *prop_list); prop_list++; } } g_list_free (renderers); return gail_renderer_cell_update_cache (renderer_cell, emit_change_signal); } static void set_iter_nth_row (GtkTreeView *tree_view, GtkTreeIter *iter, gint row) { GtkTreeModel *tree_model; tree_model = gtk_tree_view_get_model (tree_view); gtk_tree_model_get_iter_first (tree_model, iter); iter = return_iter_nth_row (tree_view, tree_model, iter, 0 , row); } static gint get_row_from_tree_path (GtkTreeView *tree_view, GtkTreePath *path) { GtkTreeModel *tree_model; GtkTreePath *root_tree; gint row; tree_model = gtk_tree_view_get_model (tree_view); if (gtk_tree_model_get_flags (tree_model) & GTK_TREE_MODEL_LIST_ONLY) row = gtk_tree_path_get_indices (path)[0]; else { root_tree = gtk_tree_path_new_first (); row = 0; iterate_thru_children (tree_view, tree_model, root_tree, path, &row, 0); gtk_tree_path_free (root_tree); } return row; } /* Misc Private */ /* * Get the specified GtkTreeViewColumn in the GtkTreeView. * Only visible columns are considered. */ static GtkTreeViewColumn* get_column (GtkTreeView *tree_view, gint in_col) { GtkTreeViewColumn *tv_col; gint n_cols = -1; gint i = 0; if (in_col < 0) { g_warning ("Request for invalid column %d\n", in_col); return NULL; } tv_col = gtk_tree_view_get_column (tree_view, i); while (tv_col != NULL) { if (gtk_tree_view_column_get_visible (tv_col)) n_cols++; if (in_col == n_cols) break; tv_col = gtk_tree_view_get_column (tree_view, ++i); } if (in_col != n_cols) { g_warning ("Request for invalid column %d\n", in_col); return NULL; } return tv_col; } static gint get_actual_column_number (GtkTreeView *tree_view, gint visible_column) { GtkTreeViewColumn *tv_col; gint actual_column = 0; gint visible_columns = -1; /* * This function calculates the column number which corresponds to the * specified visible column number */ tv_col = gtk_tree_view_get_column (tree_view, actual_column); while (tv_col != NULL) { if (gtk_tree_view_column_get_visible (tv_col)) visible_columns++; if (visible_columns == visible_column) return actual_column; tv_col = gtk_tree_view_get_column (tree_view, ++actual_column); } g_warning ("get_actual_column_number failed for %d\n", visible_column); return -1; } static gint get_visible_column_number (GtkTreeView *tree_view, gint actual_column) { GtkTreeViewColumn *tv_col; gint column = 0; gint visible_columns = -1; /* * This function calculates the visible column number which corresponds to the * specified actual column number */ tv_col = gtk_tree_view_get_column (tree_view, column); while (tv_col != NULL) { if (gtk_tree_view_column_get_visible (tv_col)) { visible_columns++; if (actual_column == column) return visible_columns; } else if (actual_column == column) return -1; tv_col = gtk_tree_view_get_column (tree_view, ++column); } g_warning ("get_visible_column_number failed for %d\n", actual_column); return -1; } /** * Helper recursive function that returns GtkTreeIter pointer to nth row. **/ static GtkTreeIter* return_iter_nth_row(GtkTreeView *tree_view, GtkTreeModel *tree_model, GtkTreeIter *iter, gint increment, gint row) { GtkTreePath *current_path = gtk_tree_model_get_path (tree_model, iter); GtkTreeIter new_iter; gboolean row_expanded; if (increment == row) { gtk_tree_path_free (current_path); return iter; } row_expanded = gtk_tree_view_row_expanded (tree_view, current_path); gtk_tree_path_free (current_path); new_iter = *iter; if ((row_expanded && gtk_tree_model_iter_children (tree_model, iter, &new_iter)) || (gtk_tree_model_iter_next (tree_model, iter)) || (gtk_tree_model_iter_parent (tree_model, iter, &new_iter) && (gtk_tree_model_iter_next (tree_model, iter)))) return return_iter_nth_row (tree_view, tree_model, iter, ++increment, row); return NULL; } /** * Recursively called until the row specified by orig is found. * * *count will be set to the visible row number of the child * relative to the row that was initially passed in as tree_path. * * *count will be -1 if orig is not found as a child (a row that is * not visible will not be found, e.g. if the row is inside a * collapsed row). If NULL is passed in as orig, *count will * be a count of the visible children. * * NOTE: the value for depth must be 0 when this recursive function * is initially called, or it may not function as expected. **/ static void iterate_thru_children(GtkTreeView *tree_view, GtkTreeModel *tree_model, GtkTreePath *tree_path, GtkTreePath *orig, gint *count, gint depth) { GtkTreeIter iter; if (!gtk_tree_model_get_iter (tree_model, &iter, tree_path)) return; if (tree_path && orig && !gtk_tree_path_compare (tree_path, orig)) /* Found it! */ return; if (tree_path && orig && gtk_tree_path_compare (tree_path, orig) > 0) { /* Past it, so return -1 */ *count = -1; return; } else if (gtk_tree_view_row_expanded (tree_view, tree_path) && gtk_tree_model_iter_has_child (tree_model, &iter)) { (*count)++; gtk_tree_path_append_index (tree_path, 0); iterate_thru_children (tree_view, tree_model, tree_path, orig, count, (depth + 1)); return; } else if (gtk_tree_model_iter_next (tree_model, &iter)) { (*count)++; tree_path = gtk_tree_model_get_path (tree_model, &iter); if (tree_path) { iterate_thru_children (tree_view, tree_model, tree_path, orig, count, depth); gtk_tree_path_free (tree_path); } return; } else if (gtk_tree_path_up (tree_path)) { GtkTreeIter temp_iter; gboolean exit_loop = FALSE; gint new_depth = depth - 1; (*count)++; /* * Make sure that we back up until we find a row * where gtk_tree_path_next does not return NULL. */ while (!exit_loop) { if (gtk_tree_path_get_depth (tree_path) == 0) /* depth is now zero so */ return; gtk_tree_path_next (tree_path); /* Verify that the next row is a valid row! */ exit_loop = gtk_tree_model_get_iter (tree_model, &temp_iter, tree_path); if (!exit_loop) { /* Keep going up until we find a row that has a valid next */ if (gtk_tree_path_get_depth(tree_path) > 1) { new_depth--; gtk_tree_path_up (tree_path); } else { /* * If depth is 1 and gtk_tree_model_get_iter returns FALSE, * then we are at the last row, so just return. */ if (orig != NULL) *count = -1; return; } } } /* * This guarantees that we will stop when we hit the end of the * children. */ if (new_depth < 0) return; iterate_thru_children (tree_view, tree_model, tree_path, orig, count, new_depth); return; } /* * If it gets here, then the path wasn't found. Situations * that would cause this would be if the path passed in is * invalid or contained within the last row, but not visible * because the last row is not expanded. If NULL was passed * in then a row count is desired, so only set count to -1 * if orig is not NULL. */ if (orig != NULL) *count = -1; return; } static void clean_cell_info (GailTreeView *gailview, GList *list) { GailTreeViewCellInfo *cell_info; GObject *obj; g_assert (GAIL_IS_TREE_VIEW (gailview)); cell_info = list->data; if (cell_info->in_use) { obj = G_OBJECT (cell_info->cell); gail_cell_add_state (cell_info->cell, ATK_STATE_DEFUNCT, FALSE); g_object_weak_unref (obj, (GWeakNotify) cell_destroyed, cell_info); cell_info->in_use = FALSE; if (!gailview->garbage_collection_pending) { gailview->garbage_collection_pending = TRUE; g_assert (gailview->idle_garbage_collect_id == 0); gailview->idle_garbage_collect_id = gdk_threads_add_idle (idle_garbage_collect_cell_data, gailview); } } } static void clean_rows (GailTreeView *gailview) { GArray *array; /* Clean GailTreeViewRowInfo data */ array = gailview->row_data; if (array != NULL) { GailTreeViewRowInfo *row_info; GtkTreePath *row_path; gint i; /* * Loop backwards so that calls to free_row_info * do not affect the index numbers */ for (i = (array->len - 1); i >= 0; i --) { row_info = g_array_index (array, GailTreeViewRowInfo*, i); row_path = gtk_tree_row_reference_get_path (row_info->row_ref); /* Remove any rows that have become invalid */ if (row_path == NULL) free_row_info (array, i, TRUE); else gtk_tree_path_free (row_path); } } /* Clean GailTreeViewCellInfo data */ if (gailview->cell_data != NULL) { GailTreeViewCellInfo *cell_info; GtkTreePath *row_path; GList *cur_list; GList *temp_list; temp_list = gailview->cell_data; /* Must loop through them all */ while (temp_list != NULL) { cur_list = temp_list; cell_info = temp_list->data; temp_list = temp_list->next; row_path = gtk_tree_row_reference_get_path (cell_info->cell_row_ref); /* * If the cell has become invalid because the row has been removed, * then set the cell's state to ATK_STATE_DEFUNCT and remove the cell * from gailview->cell_data. If row_path is NULL then the row has * been removed. */ if (row_path == NULL) { clean_cell_info (gailview, cur_list); } else { gtk_tree_path_free (row_path); } } } } static void clean_cols (GailTreeView *gailview, GtkTreeViewColumn *tv_col) { /* Clean GailTreeViewCellInfo data */ if (gailview->cell_data != NULL) { GailTreeViewCellInfo *cell_info; GList *cur_list, *temp_list; temp_list = gailview->cell_data; while (temp_list != NULL) { cur_list = temp_list; cell_info = temp_list->data; temp_list = temp_list->next; /* * If the cell has become invalid because the column tv_col * has been removed, then set the cell's state to ATK_STATE_DEFUNCT * and remove the cell from gailview->cell_data. */ if (cell_info->cell_col_ref == tv_col) { clean_cell_info (gailview, cur_list); } } } } static gboolean idle_garbage_collect_cell_data (gpointer data) { GailTreeView *tree_view; g_assert (GAIL_IS_TREE_VIEW (data)); tree_view = (GailTreeView *)data; /* this is the idle handler (only one instance allowed), so * we can safely delete it. */ tree_view->garbage_collection_pending = FALSE; tree_view->idle_garbage_collect_id = 0; tree_view->garbage_collection_pending = garbage_collect_cell_data (data); /* N.B.: if for some reason another handler has re-enterantly been queued * while this handler was being serviced, it has its own gsource, therefore this handler * should always return FALSE. */ return FALSE; } static gboolean garbage_collect_cell_data (gpointer data) { GailTreeView *tree_view; GList *temp_list, *list; GailTreeViewCellInfo *cell_info; g_assert (GAIL_IS_TREE_VIEW (data)); tree_view = (GailTreeView *)data; list = g_list_copy (tree_view->cell_data); tree_view->garbage_collection_pending = FALSE; if (tree_view->idle_garbage_collect_id != 0) { g_source_remove (tree_view->idle_garbage_collect_id); tree_view->idle_garbage_collect_id = 0; } /* Must loop through them all */ temp_list = list; while (temp_list != NULL) { cell_info = temp_list->data; if (!cell_info->in_use) { /* g_object_unref (cell_info->cell); */ tree_view->cell_data = g_list_remove (tree_view->cell_data, cell_info); if (cell_info->cell_row_ref) gtk_tree_row_reference_free (cell_info->cell_row_ref); g_free (cell_info); } temp_list = temp_list->next; } g_list_free (list); return tree_view->garbage_collection_pending; } /** * If tree_path is passed in as NULL, then all cells are acted on. * Otherwise, just act on those cells that are on a row greater than * the specified tree_path. If inc_row is passed in as TRUE, then rows * greater and equal to the specified tree_path are acted on. * * if set_stale is set the ATK_STATE_STALE is set on cells which are to be * acted on. * * The function set_cell_visibility() is called on all cells to be * acted on to update the visibility of the cell. **/ static void traverse_cells (GailTreeView *tree_view, GtkTreePath *tree_path, gboolean set_stale, gboolean inc_row) { if (tree_view->cell_data != NULL) { GailTreeViewCellInfo *cell_info; GtkTreeView *gtk_tree_view; GList *temp_list; GtkWidget *widget; g_assert (GTK_IS_ACCESSIBLE (tree_view)); widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (tree_view)); if (!widget) /* Widget is being deleted */ return; gtk_tree_view = GTK_TREE_VIEW (widget); temp_list = tree_view->cell_data; /* Must loop through them all */ while (temp_list != NULL) { GtkTreePath *row_path; gboolean act_on_cell; cell_info = temp_list->data; temp_list = temp_list->next; if (cell_info->in_use) { row_path = gtk_tree_row_reference_get_path (cell_info->cell_row_ref); g_return_if_fail (row_path != NULL); if (tree_path == NULL) act_on_cell = TRUE; else { gint comparison; comparison = gtk_tree_path_compare (row_path, tree_path); if ((comparison > 0) || (comparison == 0 && inc_row)) act_on_cell = TRUE; else act_on_cell = FALSE; } if (!cell_info->in_use) g_warning ("warning: cell info destroyed during traversal"); if (act_on_cell && cell_info->in_use) { if (set_stale) gail_cell_add_state (cell_info->cell, ATK_STATE_STALE, TRUE); set_cell_visibility (gtk_tree_view, cell_info->cell, cell_info->cell_col_ref, row_path, TRUE); } gtk_tree_path_free (row_path); } } } g_signal_emit_by_name (tree_view, "visible-data-changed"); } static void free_row_info (GArray *array, gint array_idx, gboolean shift) { GailTreeViewRowInfo* obj; obj = g_array_index (array, GailTreeViewRowInfo*, array_idx); g_free (obj->description); if (obj->row_ref != NULL) gtk_tree_row_reference_free (obj->row_ref); if (obj->header) g_object_unref (obj->header); g_free (obj); if (shift) g_array_remove_index (array, array_idx); } /* * If the tree_path passed in has children, then * ATK_STATE_EXPANDABLE is set. If the row is expanded * ATK_STATE_EXPANDED is turned on. If the row is * collapsed, then ATK_STATE_EXPANDED is removed. * * If the tree_path passed in has no children, then * ATK_STATE_EXPANDABLE and ATK_STATE_EXPANDED are removed. * * If set_on_ancestor is TRUE, then this function will also * update all cells that are ancestors of the tree_path. */ static void set_expand_state (GtkTreeView *tree_view, GtkTreeModel *tree_model, GailTreeView *gailview, GtkTreePath *tree_path, gboolean set_on_ancestor) { if (gailview->cell_data != NULL) { GtkTreeViewColumn *expander_tv; GailTreeViewCellInfo *cell_info; GList *temp_list; GtkTreePath *cell_path; GtkTreeIter iter; gboolean found; temp_list = gailview->cell_data; while (temp_list != NULL) { cell_info = temp_list->data; temp_list = temp_list->next; if (cell_info->in_use) { cell_path = gtk_tree_row_reference_get_path (cell_info->cell_row_ref); found = FALSE; if (cell_path != NULL) { GailCell *cell = GAIL_CELL (cell_info->cell); expander_tv = gtk_tree_view_get_expander_column (tree_view); /* * Only set state for the cell that is in the column with the * expander toggle */ if (expander_tv == cell_info->cell_col_ref) { if (tree_path && gtk_tree_path_compare (cell_path, tree_path) == 0) found = TRUE; else if (set_on_ancestor && gtk_tree_path_get_depth (cell_path) < gtk_tree_path_get_depth (tree_path) && gtk_tree_path_is_ancestor (cell_path, tree_path) == 1) /* Only set if set_on_ancestor was passed in as TRUE */ found = TRUE; } /* * Set ATK_STATE_EXPANDABLE and ATK_STATE_EXPANDED * for ancestors and found cells. */ if (found) { /* * Must check against cell_path since cell_path * can be equal to or an ancestor of tree_path. */ gtk_tree_model_get_iter (tree_model, &iter, cell_path); /* Set or unset ATK_STATE_EXPANDABLE as appropriate */ if (gtk_tree_model_iter_has_child (tree_model, &iter)) { set_cell_expandable (cell); if (gtk_tree_view_row_expanded (tree_view, cell_path)) gail_cell_add_state (cell, ATK_STATE_EXPANDED, TRUE); else gail_cell_remove_state (cell, ATK_STATE_EXPANDED, TRUE); } else { gail_cell_remove_state (cell, ATK_STATE_EXPANDED, TRUE); if (gail_cell_remove_state (cell, ATK_STATE_EXPANDABLE, TRUE)) /* The state may have been propagated to the container cell */ if (!GAIL_IS_CONTAINER_CELL (cell)) gail_cell_remove_action_by_name (cell, "expand or contract"); } /* * We assume that each cell in the cache once and * a container cell is before its child cells so we are * finished if set_on_ancestor is not set to TRUE. */ if (!set_on_ancestor) break; } } gtk_tree_path_free (cell_path); } } } } static void add_cell_actions (GailCell *cell, gboolean editable) { if (GAIL_IS_BOOLEAN_CELL (cell)) gail_cell_add_action (cell, "toggle", "toggles the cell", /* action description */ NULL, toggle_cell_toggled); if (editable) gail_cell_add_action (cell, "edit", "creates a widget in which the contents of the cell can be edited", NULL, edit_cell); gail_cell_add_action (cell, "activate", "activate the cell", NULL, activate_cell); } static void toggle_cell_expanded (GailCell *cell) { GailTreeViewCellInfo *cell_info; GtkTreeView *tree_view; GtkTreePath *path; AtkObject *parent; AtkStateSet *stateset; parent = atk_object_get_parent (ATK_OBJECT (cell)); if (GAIL_IS_CONTAINER_CELL (parent)) parent = atk_object_get_parent (parent); cell_info = find_cell_info (GAIL_TREE_VIEW (parent), cell, NULL, TRUE); gail_return_if_fail (cell_info); gail_return_if_fail (cell_info->cell_col_ref); gail_return_if_fail (cell_info->cell_row_ref); tree_view = GTK_TREE_VIEW (gtk_accessible_get_widget (GTK_ACCESSIBLE (parent))); path = gtk_tree_row_reference_get_path (cell_info->cell_row_ref); gail_return_if_fail (path); stateset = atk_object_ref_state_set (ATK_OBJECT (cell)); if (atk_state_set_contains_state (stateset, ATK_STATE_EXPANDED)) gtk_tree_view_collapse_row (tree_view, path); else gtk_tree_view_expand_row (tree_view, path, TRUE); g_object_unref (stateset); gtk_tree_path_free (path); return; } static void toggle_cell_toggled (GailCell *cell) { GailTreeViewCellInfo *cell_info; GtkTreeView *tree_view; GtkTreePath *path; gchar *pathstring; GList *renderers, *cur_renderer; AtkObject *parent; gboolean is_container_cell = FALSE; parent = atk_object_get_parent (ATK_OBJECT (cell)); if (GAIL_IS_CONTAINER_CELL (parent)) { is_container_cell = TRUE; parent = atk_object_get_parent (parent); } cell_info = find_cell_info (GAIL_TREE_VIEW (parent), cell, NULL, TRUE); gail_return_if_fail (cell_info); gail_return_if_fail (cell_info->cell_col_ref); gail_return_if_fail (cell_info->cell_row_ref); tree_view = GTK_TREE_VIEW (gtk_accessible_get_widget (GTK_ACCESSIBLE (parent))); path = gtk_tree_row_reference_get_path (cell_info->cell_row_ref); gail_return_if_fail (path); pathstring = gtk_tree_path_to_string (path); renderers = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (cell_info->cell_col_ref)); gail_return_if_fail (renderers); /* * if the cell is in a container, it's index is used to find the * renderer in the list */ if (is_container_cell) cur_renderer = g_list_nth (renderers, cell->index); else /* * Otherwise, we assume that the cell is represented by the first * renderer in the list */ cur_renderer = renderers; gail_return_if_fail (cur_renderer); g_signal_emit_by_name (cur_renderer->data, "toggled", pathstring); g_list_free (renderers); g_free (pathstring); gtk_tree_path_free (path); return; } static void edit_cell (GailCell *cell) { GailTreeViewCellInfo *cell_info; GtkTreeView *tree_view; GtkTreePath *path; AtkObject *parent; gboolean is_container_cell = FALSE; editing = TRUE; parent = atk_object_get_parent (ATK_OBJECT (cell)); if (GAIL_IS_CONTAINER_CELL (parent)) { is_container_cell = TRUE; parent = atk_object_get_parent (parent); } cell_info = find_cell_info (GAIL_TREE_VIEW (parent), cell, NULL, TRUE); gail_return_if_fail (cell_info); gail_return_if_fail (cell_info->cell_col_ref); gail_return_if_fail (cell_info->cell_row_ref); tree_view = GTK_TREE_VIEW (gtk_accessible_get_widget (GTK_ACCESSIBLE (parent))); path = gtk_tree_row_reference_get_path (cell_info->cell_row_ref); gail_return_if_fail (path); gtk_tree_view_set_cursor (tree_view, path, cell_info->cell_col_ref, TRUE); gtk_tree_path_free (path); return; } static void activate_cell (GailCell *cell) { GailTreeViewCellInfo *cell_info; GtkTreeView *tree_view; GtkTreePath *path; AtkObject *parent; gboolean is_container_cell = FALSE; editing = TRUE; parent = atk_object_get_parent (ATK_OBJECT (cell)); if (GAIL_IS_CONTAINER_CELL (parent)) { is_container_cell = TRUE; parent = atk_object_get_parent (parent); } cell_info = find_cell_info (GAIL_TREE_VIEW (parent), cell, NULL, TRUE); gail_return_if_fail (cell_info); gail_return_if_fail (cell_info->cell_col_ref); gail_return_if_fail (cell_info->cell_row_ref); tree_view = GTK_TREE_VIEW (gtk_accessible_get_widget (GTK_ACCESSIBLE (parent))); path = gtk_tree_row_reference_get_path (cell_info->cell_row_ref); gail_return_if_fail (path); gtk_tree_view_row_activated (tree_view, path, cell_info->cell_col_ref); gtk_tree_path_free (path); return; } static void cell_destroyed (gpointer data) { GailTreeViewCellInfo *cell_info = data; gail_return_if_fail (cell_info); if (cell_info->in_use) { cell_info->in_use = FALSE; g_assert (GAIL_IS_TREE_VIEW (cell_info->view)); if (!cell_info->view->garbage_collection_pending) { cell_info->view->garbage_collection_pending = TRUE; cell_info->view->idle_garbage_collect_id = gdk_threads_add_idle (idle_garbage_collect_cell_data, cell_info->view); } } } #if 0 static void cell_info_remove (GailTreeView *tree_view, GailCell *cell) { GailTreeViewCellInfo *info; GList *temp_list; info = find_cell_info (tree_view, cell, &temp_list, FALSE); if (info) { info->in_use = FALSE; return; } g_warning ("No cell removed in cell_info_remove\n"); } #endif static void cell_info_get_index (GtkTreeView *tree_view, GailTreeViewCellInfo *info, gint *index) { GtkTreePath *path; gint column_number; path = gtk_tree_row_reference_get_path (info->cell_row_ref); gail_return_if_fail (path); column_number = get_column_number (tree_view, info->cell_col_ref, FALSE); *index = get_index (tree_view, path, column_number); gtk_tree_path_free (path); } static void cell_info_new (GailTreeView *gailview, GtkTreeModel *tree_model, GtkTreePath *path, GtkTreeViewColumn *tv_col, GailCell *cell ) { GailTreeViewCellInfo *cell_info; g_assert (GAIL_IS_TREE_VIEW (gailview)); cell_info = g_new (GailTreeViewCellInfo, 1); cell_info->cell_row_ref = gtk_tree_row_reference_new (tree_model, path); cell_info->cell_col_ref = tv_col; cell_info->cell = cell; cell_info->in_use = TRUE; /* if we've created it, assume it's in use */ cell_info->view = gailview; gailview->cell_data = g_list_append (gailview->cell_data, cell_info); /* Setup weak reference notification */ g_object_weak_ref (G_OBJECT (cell), (GWeakNotify) cell_destroyed, cell_info); } static GailCell* find_cell (GailTreeView *gailview, gint index) { GailTreeViewCellInfo *info; GtkTreeView *tree_view; GList *cell_list; GList *l; gint real_index; gboolean needs_cleaning = FALSE; GailCell *retval = NULL; tree_view = GTK_TREE_VIEW (gtk_accessible_get_widget (GTK_ACCESSIBLE (gailview))); cell_list = gailview->cell_data; for (l = cell_list; l; l = l->next) { info = (GailTreeViewCellInfo *) (l->data); if (info->in_use) { cell_info_get_index (tree_view, info, &real_index); if (index == real_index) { retval = info->cell; break; } } else { needs_cleaning = TRUE; } } if (needs_cleaning) garbage_collect_cell_data (gailview); return retval; } static void refresh_cell_index (GailCell *cell) { GailTreeViewCellInfo *info; AtkObject *parent; GtkTreeView *tree_view; gint index; parent = atk_object_get_parent (ATK_OBJECT (cell)); gail_return_if_fail (GAIL_IS_TREE_VIEW (parent)); tree_view = GTK_TREE_VIEW (gtk_accessible_get_widget (GTK_ACCESSIBLE (parent))); /* Find this cell in the GailTreeView's cache */ info = find_cell_info (GAIL_TREE_VIEW (parent), cell, NULL, TRUE); gail_return_if_fail (info); cell_info_get_index (tree_view, info, &index); cell->index = index; } static void get_selected_rows (GtkTreeModel *model, GtkTreePath *path, GtkTreeIter *iter, gpointer data) { GPtrArray *array = (GPtrArray *)data; g_ptr_array_add (array, gtk_tree_path_copy (path)); } static void connect_model_signals (GtkTreeView *view, GailTreeView *gailview) { GObject *obj; obj = G_OBJECT (gailview->tree_model); g_signal_connect_data (obj, "row-changed", (GCallback) model_row_changed, view, NULL, 0); g_signal_connect_data (obj, "row-inserted", (GCallback) model_row_inserted, view, NULL, G_CONNECT_AFTER); g_signal_connect_data (obj, "row-deleted", (GCallback) model_row_deleted, view, NULL, G_CONNECT_AFTER); g_signal_connect_data (obj, "rows-reordered", (GCallback) model_rows_reordered, view, NULL, G_CONNECT_AFTER); } static void disconnect_model_signals (GailTreeView *view) { GObject *obj; GtkWidget *widget; obj = G_OBJECT (view->tree_model); widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (view)); g_signal_handlers_disconnect_by_func (obj, (gpointer) model_row_changed, widget); g_signal_handlers_disconnect_by_func (obj, (gpointer) model_row_inserted, widget); g_signal_handlers_disconnect_by_func (obj, (gpointer) model_row_deleted, widget); g_signal_handlers_disconnect_by_func (obj, (gpointer) model_rows_reordered, widget); } static void clear_cached_data (GailTreeView *view) { GList *temp_list; if (view->row_data) { GArray *array = view->row_data; gint i; /* * Since the third argument to free_row_info is FALSE, we don't remove * the element. Therefore it is safe to loop forward. */ for (i = 0; i < array->len; i++) free_row_info (array, i, FALSE); g_array_free (array, TRUE); view->row_data = NULL; } if (view->cell_data) { /* Must loop through them all */ for (temp_list = view->cell_data; temp_list; temp_list = temp_list->next) { clean_cell_info (view, temp_list); } } garbage_collect_cell_data (view); if (view->cell_data) g_list_free (view->cell_data); view->cell_data = NULL; } /* * Returns the column number of the specified GtkTreeViewColumn * * If visible is set, the value returned will be the visible column number, * i.e. suitable for use in AtkTable function. If visible is not set, the * value returned is the actual column number, which is suitable for use in * getting an index value. */ static gint get_column_number (GtkTreeView *tree_view, GtkTreeViewColumn *column, gboolean visible) { GList *temp_list, *column_list; GtkTreeViewColumn *tv_column; gint ret_val; column_list = gtk_tree_view_get_columns (tree_view); ret_val = 0; for (temp_list = column_list; temp_list; temp_list = temp_list->next) { tv_column = GTK_TREE_VIEW_COLUMN (temp_list->data); if (tv_column == column) break; if (!visible || gtk_tree_view_column_get_visible (tv_column)) ret_val++; } if (temp_list == NULL) { ret_val = -1; } g_list_free (column_list); return ret_val; } static gint get_index (GtkTreeView *tree_view, GtkTreePath *path, gint actual_column) { gint depth = 0; gint index = 1; gint *indices = NULL; if (path) { depth = gtk_tree_path_get_depth (path); indices = gtk_tree_path_get_indices (path); } if (depth > 1) { GtkTreePath *copy_path; GtkTreeModel *model; model = gtk_tree_view_get_model (tree_view); copy_path = gtk_tree_path_copy (path); gtk_tree_path_up (copy_path); count_rows (model, NULL, copy_path, &index, 0, depth); gtk_tree_path_free (copy_path); } if (path) index += indices[depth-1]; index *= get_n_actual_columns (tree_view); index += actual_column; return index; } /* * The function count_rows counts the number of rows starting at iter and ending * at end_path. The value of level is the depth of iter and the value of depth * is the depth of end_path. Rows at depth before end_path are counted. * This functions counts rows which are not visible because an ancestor is * collapsed. */ static void count_rows (GtkTreeModel *model, GtkTreeIter *iter, GtkTreePath *end_path, gint *count, gint level, gint depth) { GtkTreeIter child_iter; if (!model) return; level++; *count += gtk_tree_model_iter_n_children (model, iter); #if 0 g_print ("count_rows : %d level: %d depth: %d\n", *count, level, depth); if (iter != NULL) g_print ("path: %s\n", gtk_tree_path_to_string (gtk_tree_model_get_path (model, iter))); #endif if (level >= depth) return; if (gtk_tree_model_iter_children (model, &child_iter, iter)) { gboolean ret_val = TRUE; while (ret_val) { if (level == depth - 1) { GtkTreePath *iter_path; gboolean finished = FALSE; iter_path = gtk_tree_model_get_path (model, &child_iter); if (end_path && gtk_tree_path_compare (iter_path, end_path) >= 0) finished = TRUE; gtk_tree_path_free (iter_path); if (finished) break; } if (gtk_tree_model_iter_has_child (model, &child_iter)) count_rows (model, &child_iter, end_path, count, level, depth); ret_val = gtk_tree_model_iter_next (model, &child_iter); } } } /* * Find the next node, which has children, at the specified depth below * the specified iter. The level is the depth of the current iter. * The position of the node is returned in path and the return value of TRUE * means that a node was found. */ gboolean get_next_node_with_child_at_depth (GtkTreeModel *model, GtkTreeIter *iter, GtkTreePath **path, gint level, gint depth) { GtkTreeIter child_iter; *path = NULL; if (gtk_tree_model_iter_children (model, &child_iter, iter)) { level++; while (TRUE) { while (!gtk_tree_model_iter_has_child (model, &child_iter)) { if (!gtk_tree_model_iter_next (model, &child_iter)) return FALSE; } if (level == depth) /* We have found what we were looking for */ { *path = gtk_tree_model_get_path (model, &child_iter); return TRUE; } if (get_next_node_with_child_at_depth (model, &child_iter, path, level, depth)) return TRUE; if (!gtk_tree_model_iter_next (model, &child_iter)) return FALSE; } } return FALSE; } /* * Find the next node, which has children, at the same depth as * the specified GtkTreePath. */ static gboolean get_next_node_with_child (GtkTreeModel *model, GtkTreePath *path, GtkTreePath **return_path) { GtkTreeIter iter; gint depth; gtk_tree_model_get_iter (model, &iter, path); while (gtk_tree_model_iter_next (model, &iter)) { if (gtk_tree_model_iter_has_child (model, &iter)) { *return_path = gtk_tree_model_get_path (model, &iter); return TRUE; } } depth = gtk_tree_path_get_depth (path); while (gtk_tree_path_up (path)) { if (gtk_tree_path_get_depth (path) == 0) break; gtk_tree_model_get_iter (model, &iter, path); while (gtk_tree_model_iter_next (model, &iter)) if (get_next_node_with_child_at_depth (model, &iter, return_path, gtk_tree_path_get_depth (path), depth)) return TRUE; } *return_path = NULL; return FALSE; } static gboolean get_tree_path_from_row_index (GtkTreeModel *model, gint row_index, GtkTreePath **tree_path) { GtkTreeIter iter; gint count; gint depth; count = gtk_tree_model_iter_n_children (model, NULL); if (count > row_index) { if (gtk_tree_model_iter_nth_child (model, &iter, NULL, row_index)) { *tree_path = gtk_tree_model_get_path (model, &iter); return TRUE; } else return FALSE; } else row_index -= count; depth = 0; while (TRUE) { depth++; if (get_next_node_with_child_at_depth (model, NULL, tree_path, 0, depth)) { GtkTreePath *next_path; while (TRUE) { gtk_tree_model_get_iter (model, &iter, *tree_path); count = gtk_tree_model_iter_n_children (model, &iter); if (count > row_index) { gtk_tree_path_append_index (*tree_path, row_index); return TRUE; } else row_index -= count; if (!get_next_node_with_child (model, *tree_path, &next_path)) break; gtk_tree_path_free (*tree_path); *tree_path = next_path; } } else { g_warning ("Index value is too large\n"); gtk_tree_path_free (*tree_path); *tree_path = NULL; return FALSE; } } } /* * This function returns the number of rows, including those which are collapsed */ static gint get_row_count (GtkTreeModel *model) { gint n_rows = 1; count_rows (model, NULL, NULL, &n_rows, 0, G_MAXINT); return n_rows; } static gboolean get_path_column_from_index (GtkTreeView *tree_view, gint index, GtkTreePath **path, GtkTreeViewColumn **column) { GtkTreeModel *tree_model; gint n_columns; tree_model = gtk_tree_view_get_model (tree_view); n_columns = get_n_actual_columns (tree_view); if (n_columns == 0) return FALSE; /* First row is the column headers */ index -= n_columns; if (index < 0) return FALSE; if (path) { gint row_index; gboolean retval; row_index = index / n_columns; retval = get_tree_path_from_row_index (tree_model, row_index, path); gail_return_val_if_fail (retval, FALSE); if (*path == NULL) return FALSE; } if (column) { *column = gtk_tree_view_get_column (tree_view, index % n_columns); if (*column == NULL) { if (path) gtk_tree_path_free (*path); return FALSE; } } return TRUE; } static void set_cell_expandable (GailCell *cell) { if (gail_cell_add_state (cell, ATK_STATE_EXPANDABLE, FALSE)) gail_cell_add_action (cell, "expand or contract", /* action name */ "expands or contracts the row in the tree view " "containing this cell", /* description */ NULL, /* Keybinding */ toggle_cell_expanded); } static GailTreeViewCellInfo* find_cell_info (GailTreeView *view, GailCell *cell, GList** list, gboolean live_only) { GList *temp_list; GailTreeViewCellInfo *cell_info; for (temp_list = view->cell_data; temp_list; temp_list = temp_list->next) { cell_info = (GailTreeViewCellInfo *) temp_list->data; if (cell_info->cell == cell && (!live_only || cell_info->in_use)) { if (list) *list = temp_list; return cell_info; } } return NULL; } static AtkObject * get_header_from_column (GtkTreeViewColumn *tv_col) { AtkObject *rc; GtkWidget *header_widget; if (tv_col == NULL) return NULL; /* If the user has set a header object, use that */ rc = g_object_get_qdata (G_OBJECT (tv_col), quark_column_header_object); if (rc == NULL) { /* If the user has not set a header object, grab the column */ /* header object defined by the GtkTreeView */ header_widget = tv_col->button; if (header_widget) { rc = gtk_widget_get_accessible (header_widget); } else rc = NULL; } return rc; }