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gtk2/gtk/gtkentrycompletion.c
Matthias Clasen 22c9f6e83f Improve positioning of entry completion popup. 
2004-09-13  Matthias Clasen  <mclasen@redhat.com>

	* gtk/gtkentrycompletion.c (_gtk_entry_completion_resize_popup):
	Improve positioning of entry completion popup.
2004-09-13 14:20:12 +00:00

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/* gtkentrycompletion.c
* Copyright (C) 2003 Kristian Rietveld <kris@gtk.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library 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 "gtkalias.h"
#include "gtkentrycompletion.h"
#include "gtkentryprivate.h"
#include "gtkcelllayout.h"
#include "gtkintl.h"
#include "gtkcellrenderertext.h"
#include "gtkframe.h"
#include "gtktreeselection.h"
#include "gtktreeview.h"
#include "gtkscrolledwindow.h"
#include "gtkvbox.h"
#include "gtkwindow.h"
#include "gtkentry.h"
#include "gtkmain.h"
#include "gtksignal.h"
#include "gtkmarshalers.h"
#include <string.h>
/* signals */
enum
{
INSERT_PREFIX,
MATCH_SELECTED,
ACTION_ACTIVATED,
LAST_SIGNAL
};
/* properties */
enum
{
PROP_0,
PROP_MODEL,
PROP_MINIMUM_KEY_LENGTH,
PROP_TEXT_COLUMN,
PROP_INLINE_COMPLETION,
PROP_POPUP_COMPLETION
};
#define GTK_ENTRY_COMPLETION_GET_PRIVATE(obj)(G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_ENTRY_COMPLETION, GtkEntryCompletionPrivate))
static void gtk_entry_completion_class_init (GtkEntryCompletionClass *klass);
static void gtk_entry_completion_cell_layout_init (GtkCellLayoutIface *iface);
static void gtk_entry_completion_init (GtkEntryCompletion *completion);
static void gtk_entry_completion_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_entry_completion_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_entry_completion_finalize (GObject *object);
static void gtk_entry_completion_pack_start (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
gboolean expand);
static void gtk_entry_completion_pack_end (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
gboolean expand);
static void gtk_entry_completion_clear (GtkCellLayout *cell_layout);
static void gtk_entry_completion_add_attribute (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
const char *attribute,
gint column);
static void gtk_entry_completion_set_cell_data_func (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
GtkCellLayoutDataFunc func,
gpointer func_data,
GDestroyNotify destroy);
static void gtk_entry_completion_clear_attributes (GtkCellLayout *cell_layout,
GtkCellRenderer *cell);
static void gtk_entry_completion_reorder (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
gint position);
static gboolean gtk_entry_completion_visible_func (GtkTreeModel *model,
GtkTreeIter *iter,
gpointer data);
static gboolean gtk_entry_completion_popup_key_press (GtkWidget *widget,
GdkEventKey *event,
gpointer user_data);
static gboolean gtk_entry_completion_popup_button_press (GtkWidget *widget,
GdkEventButton *event,
gpointer user_data);
static gboolean gtk_entry_completion_list_button_press (GtkWidget *widget,
GdkEventButton *event,
gpointer user_data);
static gboolean gtk_entry_completion_action_button_press (GtkWidget *widget,
GdkEventButton *event,
gpointer user_data);
static void gtk_entry_completion_selection_changed (GtkTreeSelection *selection,
gpointer data);
static gboolean gtk_entry_completion_list_enter_notify (GtkWidget *widget,
GdkEventCrossing *event,
gpointer data);
static gboolean gtk_entry_completion_list_motion_notify (GtkWidget *widget,
GdkEventMotion *event,
gpointer data);
static void gtk_entry_completion_insert_action (GtkEntryCompletion *completion,
gint index,
const gchar *string,
gboolean markup);
static void gtk_entry_completion_action_data_func (GtkTreeViewColumn *tree_column,
GtkCellRenderer *cell,
GtkTreeModel *model,
GtkTreeIter *iter,
gpointer data);
static gboolean gtk_entry_completion_match_selected (GtkEntryCompletion *completion,
GtkTreeModel *model,
GtkTreeIter *iter);
static gboolean gtk_entry_completion_real_insert_prefix (GtkEntryCompletion *completion,
gchar *key);
static GObjectClass *parent_class = NULL;
static guint entry_completion_signals[LAST_SIGNAL] = { 0 };
GType
gtk_entry_completion_get_type (void)
{
static GType entry_completion_type = 0;
if (!entry_completion_type)
{
static const GTypeInfo entry_completion_info =
{
sizeof (GtkEntryCompletionClass),
NULL,
NULL,
(GClassInitFunc) gtk_entry_completion_class_init,
NULL,
NULL,
sizeof (GtkEntryCompletion),
0,
(GInstanceInitFunc) gtk_entry_completion_init
};
static const GInterfaceInfo cell_layout_info =
{
(GInterfaceInitFunc) gtk_entry_completion_cell_layout_init,
NULL,
NULL
};
entry_completion_type =
g_type_register_static (G_TYPE_OBJECT, "GtkEntryCompletion",
&entry_completion_info, 0);
g_type_add_interface_static (entry_completion_type,
GTK_TYPE_CELL_LAYOUT,
&cell_layout_info);
}
return entry_completion_type;
}
static void
gtk_entry_completion_class_init (GtkEntryCompletionClass *klass)
{
GObjectClass *object_class;
parent_class = g_type_class_peek_parent (klass);
object_class = (GObjectClass *)klass;
object_class->set_property = gtk_entry_completion_set_property;
object_class->get_property = gtk_entry_completion_get_property;
object_class->finalize = gtk_entry_completion_finalize;
klass->match_selected = gtk_entry_completion_match_selected;
klass->insert_prefix = gtk_entry_completion_real_insert_prefix;
/**
* GtkEntryCompletion::insert-prefix:
* @widget: the object which received the signal
* @prefix: the common prefix of all possible completions
*
* The ::insert-prefix signal is emitted when the inline autocompletion
* is triggered. The default behaviour is to make the entry display the
* whole prefix and select the newly inserted part.
*
* Applications may connect to this signal in order to insert only a
* smaller part of the @prefix into the entry - e.g. the entry used in
* the #GtkFileChooser inserts only the part of the prefix up to the
* next '/'.
*
* Return value: %TRUE if the signal has been handled
*
* Since: 2.6
*/
entry_completion_signals[INSERT_PREFIX] =
g_signal_new ("insert_prefix",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkEntryCompletionClass, insert_prefix),
_gtk_boolean_handled_accumulator, NULL,
_gtk_marshal_BOOLEAN__STRING,
G_TYPE_BOOLEAN, 1,
G_TYPE_STRING);
/**
* GtkEntryCompletion::match-selected:
* @widget: the object which received the signal
* @model: the #GtkTreeModel containing the matches
* @iter: a #GtkTreeIter positioned at the selected match
*
* The ::match-selected signal is emitted when a match from the list
* is selected. The default behaviour is to replace the contents of the
* entry with the contents of the text column in the row pointed to by
* @iter.
*
* Return value: %TRUE if the signal has been handled
*
* Since: 2.4
*/
entry_completion_signals[MATCH_SELECTED] =
g_signal_new ("match_selected",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkEntryCompletionClass, match_selected),
_gtk_boolean_handled_accumulator, NULL,
_gtk_marshal_BOOLEAN__OBJECT_BOXED,
G_TYPE_BOOLEAN, 2,
GTK_TYPE_TREE_MODEL,
GTK_TYPE_TREE_ITER);
/**
* GtkEntryCompletion::action-activated:
* @widget: the object which received the signal
* @index: the index of the activated action
*
* The ::action-activated signal is emitted when an action
* is activated.
*
* Since: 2.4
*/
entry_completion_signals[ACTION_ACTIVATED] =
g_signal_new ("action_activated",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkEntryCompletionClass, action_activated),
NULL, NULL,
_gtk_marshal_NONE__INT,
G_TYPE_NONE, 1,
G_TYPE_INT);
g_object_class_install_property (object_class,
PROP_MODEL,
g_param_spec_object ("model",
P_("Completion Model"),
P_("The model to find matches in"),
GTK_TYPE_TREE_MODEL,
G_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_MINIMUM_KEY_LENGTH,
g_param_spec_int ("minimum_key_length",
P_("Minimum Key Length"),
P_("Minimum length of the search key in order to look up matches"),
-1,
G_MAXINT,
1,
G_PARAM_READWRITE));
/**
* GtkEntryCompletion:text-column:
*
* The column of the model containing the strings.
*
* Since: 2.6
*/
g_object_class_install_property (object_class,
PROP_TEXT_COLUMN,
g_param_spec_int ("text_column",
P_("Text column"),
P_("The column of the model containing the strings."),
-1,
G_MAXINT,
-1,
G_PARAM_READWRITE));
/**
* GtkEntryCompletion:inline_completion:
*
* The boolean :inline_completion property determines whether the
* common prefix of the possible completions should be inserted
* automatically in the entry.
*
* Since: 2.6
**/
g_object_class_install_property (object_class,
PROP_INLINE_COMPLETION,
g_param_spec_boolean ("inline_completion",
P_("Inline completion"),
P_("Whether the common prefix should be inserted automatically"),
FALSE,
G_PARAM_READWRITE));
/**
* GtkEntryCompletion:popup_completion:
*
* The boolean :popup_completion property determines whether the
* possible completions should be shown in a popup window.
*
* Since: 2.6
**/
g_object_class_install_property (object_class,
PROP_POPUP_COMPLETION,
g_param_spec_boolean ("popup_completion",
P_("Popup completion"),
P_("Whether the completions should be shown in a popup window"),
TRUE,
G_PARAM_READWRITE));
g_type_class_add_private (object_class, sizeof (GtkEntryCompletionPrivate));
}
static void
gtk_entry_completion_cell_layout_init (GtkCellLayoutIface *iface)
{
iface->pack_start = gtk_entry_completion_pack_start;
iface->pack_end = gtk_entry_completion_pack_end;
iface->clear = gtk_entry_completion_clear;
iface->add_attribute = gtk_entry_completion_add_attribute;
iface->set_cell_data_func = gtk_entry_completion_set_cell_data_func;
iface->clear_attributes = gtk_entry_completion_clear_attributes;
iface->reorder = gtk_entry_completion_reorder;
}
static void
gtk_entry_completion_init (GtkEntryCompletion *completion)
{
GtkCellRenderer *cell;
GtkTreeSelection *sel;
GtkEntryCompletionPrivate *priv;
GtkWidget *popup_frame;
/* yes, also priv, need to keep the code readable */
priv = completion->priv = GTK_ENTRY_COMPLETION_GET_PRIVATE (completion);
priv->minimum_key_length = 1;
priv->text_column = -1;
priv->has_completion = FALSE;
priv->inline_completion = FALSE;
priv->popup_completion = TRUE;
/* completions */
priv->filter_model = NULL;
priv->tree_view = gtk_tree_view_new ();
g_signal_connect (priv->tree_view, "button_press_event",
G_CALLBACK (gtk_entry_completion_list_button_press),
completion);
g_signal_connect (priv->tree_view, "enter_notify_event",
G_CALLBACK (gtk_entry_completion_list_enter_notify),
completion);
g_signal_connect (priv->tree_view, "motion_notify_event",
G_CALLBACK (gtk_entry_completion_list_motion_notify),
completion);
gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->tree_view), FALSE);
gtk_tree_view_set_hover_selection (GTK_TREE_VIEW (priv->tree_view), TRUE);
sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
gtk_tree_selection_set_mode (sel, GTK_SELECTION_SINGLE);
gtk_tree_selection_unselect_all (sel);
g_signal_connect (sel, "changed",
G_CALLBACK (gtk_entry_completion_selection_changed),
completion);
priv->first_sel_changed = TRUE;
priv->column = gtk_tree_view_column_new ();
gtk_tree_view_append_column (GTK_TREE_VIEW (priv->tree_view), priv->column);
priv->scrolled_window = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->scrolled_window),
GTK_POLICY_NEVER,
GTK_POLICY_AUTOMATIC);
gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (priv->scrolled_window),
GTK_SHADOW_NONE);
/* a nasty hack to get the completions treeview to size nicely */
gtk_widget_set_size_request (GTK_SCROLLED_WINDOW (priv->scrolled_window)->vscrollbar, -1, 0);
/* actions */
priv->actions = gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_BOOLEAN);
priv->action_view =
gtk_tree_view_new_with_model (GTK_TREE_MODEL (priv->actions));
g_signal_connect (priv->action_view, "button_press_event",
G_CALLBACK (gtk_entry_completion_action_button_press),
completion);
g_signal_connect (priv->action_view, "enter_notify_event",
G_CALLBACK (gtk_entry_completion_list_enter_notify),
completion);
g_signal_connect (priv->action_view, "motion_notify_event",
G_CALLBACK (gtk_entry_completion_list_motion_notify),
completion);
gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->action_view), FALSE);
gtk_tree_view_set_hover_selection (GTK_TREE_VIEW (priv->action_view), TRUE);
sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->action_view));
gtk_tree_selection_set_mode (sel, GTK_SELECTION_SINGLE);
gtk_tree_selection_unselect_all (sel);
cell = gtk_cell_renderer_text_new ();
gtk_tree_view_insert_column_with_data_func (GTK_TREE_VIEW (priv->action_view),
0, "",
cell,
gtk_entry_completion_action_data_func,
NULL,
NULL);
/* pack it all */
priv->popup_window = gtk_window_new (GTK_WINDOW_POPUP);
gtk_window_set_resizable (GTK_WINDOW (priv->popup_window), FALSE);
g_signal_connect (priv->popup_window, "key_press_event",
G_CALLBACK (gtk_entry_completion_popup_key_press),
completion);
g_signal_connect (priv->popup_window, "button_press_event",
G_CALLBACK (gtk_entry_completion_popup_button_press),
completion);
popup_frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (popup_frame),
GTK_SHADOW_ETCHED_IN);
gtk_widget_show (popup_frame);
gtk_container_add (GTK_CONTAINER (priv->popup_window), popup_frame);
priv->vbox = gtk_vbox_new (FALSE, 0);
gtk_container_add (GTK_CONTAINER (popup_frame), priv->vbox);
gtk_container_add (GTK_CONTAINER (priv->scrolled_window), priv->tree_view);
gtk_box_pack_start (GTK_BOX (priv->vbox), priv->scrolled_window,
TRUE, TRUE, 0);
/* we don't want to see the action treeview when no actions have
* been inserted, so we pack the action treeview after the first
* action has been added
*/
}
static void
gtk_entry_completion_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (object);
GtkEntryCompletionPrivate *priv = GTK_ENTRY_COMPLETION_GET_PRIVATE (completion);
switch (prop_id)
{
case PROP_MODEL:
gtk_entry_completion_set_model (completion,
g_value_get_object (value));
break;
case PROP_MINIMUM_KEY_LENGTH:
gtk_entry_completion_set_minimum_key_length (completion,
g_value_get_int (value));
break;
case PROP_TEXT_COLUMN:
priv->text_column = g_value_get_int (value);
break;
case PROP_INLINE_COMPLETION:
priv->inline_completion = g_value_get_boolean (value);
break;
case PROP_POPUP_COMPLETION:
priv->popup_completion = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_entry_completion_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (object);
switch (prop_id)
{
case PROP_MODEL:
g_value_set_object (value,
gtk_entry_completion_get_model (completion));
break;
case PROP_MINIMUM_KEY_LENGTH:
g_value_set_int (value, gtk_entry_completion_get_minimum_key_length (completion));
break;
case PROP_TEXT_COLUMN:
g_value_set_int (value, gtk_entry_completion_get_text_column (completion));
break;
case PROP_INLINE_COMPLETION:
g_value_set_boolean (value, gtk_entry_completion_get_inline_completion (completion));
break;
case PROP_POPUP_COMPLETION:
g_value_set_boolean (value, gtk_entry_completion_get_popup_completion (completion));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_entry_completion_finalize (GObject *object)
{
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (object);
if (completion->priv->tree_view)
gtk_widget_destroy (completion->priv->tree_view);
if (completion->priv->entry)
gtk_entry_set_completion (GTK_ENTRY (completion->priv->entry), NULL);
if (completion->priv->actions)
g_object_unref (completion->priv->actions);
if (completion->priv->case_normalized_key)
g_free (completion->priv->case_normalized_key);
if (completion->priv->popup_window)
gtk_widget_destroy (completion->priv->popup_window);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
/* implement cell layout interface */
static void
gtk_entry_completion_pack_start (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
gboolean expand)
{
GtkEntryCompletionPrivate *priv;
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (cell_layout));
priv = GTK_ENTRY_COMPLETION_GET_PRIVATE (cell_layout);
gtk_tree_view_column_pack_start (priv->column, cell, expand);
}
static void
gtk_entry_completion_pack_end (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
gboolean expand)
{
GtkEntryCompletionPrivate *priv;
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (cell_layout));
priv = GTK_ENTRY_COMPLETION_GET_PRIVATE (cell_layout);
gtk_tree_view_column_pack_end (priv->column, cell, expand);
}
static void
gtk_entry_completion_clear (GtkCellLayout *cell_layout)
{
GtkEntryCompletionPrivate *priv;
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (cell_layout));
priv = GTK_ENTRY_COMPLETION_GET_PRIVATE (cell_layout);
gtk_tree_view_column_clear (priv->column);
}
static void
gtk_entry_completion_add_attribute (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
const gchar *attribute,
gint column)
{
GtkEntryCompletionPrivate *priv;
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (cell_layout));
priv = GTK_ENTRY_COMPLETION_GET_PRIVATE (cell_layout);
gtk_tree_view_column_add_attribute (priv->column, cell, attribute, column);
}
static void
gtk_entry_completion_set_cell_data_func (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
GtkCellLayoutDataFunc func,
gpointer func_data,
GDestroyNotify destroy)
{
GtkEntryCompletionPrivate *priv;
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (cell_layout));
priv = GTK_ENTRY_COMPLETION_GET_PRIVATE (cell_layout);
gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (priv->column),
cell, func, func_data, destroy);
}
static void
gtk_entry_completion_clear_attributes (GtkCellLayout *cell_layout,
GtkCellRenderer *cell)
{
GtkEntryCompletionPrivate *priv;
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (cell_layout));
priv = GTK_ENTRY_COMPLETION_GET_PRIVATE (cell_layout);
gtk_tree_view_column_clear_attributes (priv->column, cell);
}
static void
gtk_entry_completion_reorder (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
gint position)
{
GtkEntryCompletionPrivate *priv;
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (cell_layout));
priv = GTK_ENTRY_COMPLETION_GET_PRIVATE (cell_layout);
gtk_cell_layout_reorder (GTK_CELL_LAYOUT (priv->column), cell, position);
}
/* all those callbacks */
static gboolean
gtk_entry_completion_default_completion_func (GtkEntryCompletion *completion,
const gchar *key,
GtkTreeIter *iter,
gpointer user_data)
{
gchar *item = NULL;
gchar *normalized_string;
gchar *case_normalized_string;
gboolean ret = FALSE;
GtkTreeModel *model;
model = gtk_tree_model_filter_get_model (completion->priv->filter_model);
g_return_val_if_fail (gtk_tree_model_get_column_type (model, completion->priv->text_column) == G_TYPE_STRING,
FALSE);
gtk_tree_model_get (model, iter,
completion->priv->text_column, &item,
-1);
if (item != NULL)
{
normalized_string = g_utf8_normalize (item, -1, G_NORMALIZE_ALL);
case_normalized_string = g_utf8_casefold (normalized_string, -1);
if (!strncmp (key, case_normalized_string, strlen (key)))
ret = TRUE;
g_free (item);
g_free (normalized_string);
g_free (case_normalized_string);
}
return ret;
}
static gboolean
gtk_entry_completion_visible_func (GtkTreeModel *model,
GtkTreeIter *iter,
gpointer data)
{
gboolean ret = FALSE;
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (data);
if (!completion->priv->case_normalized_key)
return ret;
if (completion->priv->match_func)
ret = (* completion->priv->match_func) (completion,
completion->priv->case_normalized_key,
iter,
completion->priv->match_data);
else if (completion->priv->text_column >= 0)
ret = gtk_entry_completion_default_completion_func (completion,
completion->priv->case_normalized_key,
iter,
NULL);
return ret;
}
static gboolean
gtk_entry_completion_popup_key_press (GtkWidget *widget,
GdkEventKey *event,
gpointer user_data)
{
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (user_data);
if (!GTK_WIDGET_MAPPED (completion->priv->popup_window))
return FALSE;
/* propagate event to the entry */
gtk_widget_event (completion->priv->entry, (GdkEvent *)event);
return TRUE;
}
static gboolean
gtk_entry_completion_popup_button_press (GtkWidget *widget,
GdkEventButton *event,
gpointer user_data)
{
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (user_data);
if (!GTK_WIDGET_MAPPED (completion->priv->popup_window))
return FALSE;
/* if we come here, it's usually time to popdown */
_gtk_entry_completion_popdown (completion);
return TRUE;
}
static gboolean
gtk_entry_completion_list_button_press (GtkWidget *widget,
GdkEventButton *event,
gpointer user_data)
{
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (user_data);
GtkTreePath *path = NULL;
if (!GTK_WIDGET_MAPPED (completion->priv->popup_window))
return FALSE;
if (gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (widget),
event->x, event->y,
&path, NULL, NULL, NULL))
{
GtkTreeIter iter;
gboolean entry_set;
gtk_tree_model_get_iter (GTK_TREE_MODEL (completion->priv->filter_model),
&iter, path);
gtk_tree_path_free (path);
g_signal_handler_block (completion->priv->entry,
completion->priv->changed_id);
g_signal_emit (completion, entry_completion_signals[MATCH_SELECTED],
0, GTK_TREE_MODEL (completion->priv->filter_model),
&iter, &entry_set);
g_signal_handler_unblock (completion->priv->entry,
completion->priv->changed_id);
_gtk_entry_completion_popdown (completion);
return TRUE;
}
return FALSE;
}
static gboolean
gtk_entry_completion_action_button_press (GtkWidget *widget,
GdkEventButton *event,
gpointer user_data)
{
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (user_data);
GtkTreePath *path = NULL;
if (!GTK_WIDGET_MAPPED (completion->priv->popup_window))
return FALSE;
if (gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (widget),
event->x, event->y,
&path, NULL, NULL, NULL))
{
g_signal_emit (completion, entry_completion_signals[ACTION_ACTIVATED],
0, gtk_tree_path_get_indices (path)[0]);
gtk_tree_path_free (path);
_gtk_entry_completion_popdown (completion);
return TRUE;
}
return FALSE;
}
static void
gtk_entry_completion_action_data_func (GtkTreeViewColumn *tree_column,
GtkCellRenderer *cell,
GtkTreeModel *model,
GtkTreeIter *iter,
gpointer data)
{
gchar *string = NULL;
gboolean markup;
gtk_tree_model_get (model, iter,
0, &string,
1, &markup,
-1);
if (!string)
return;
if (markup)
g_object_set (G_OBJECT (cell),
"text", NULL,
"markup", string,
NULL);
else
g_object_set (G_OBJECT (cell),
"markup", NULL,
"text", string,
NULL);
g_free (string);
}
static void
gtk_entry_completion_selection_changed (GtkTreeSelection *selection,
gpointer data)
{
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (data);
if (completion->priv->first_sel_changed)
{
completion->priv->first_sel_changed = FALSE;
if (gtk_widget_is_focus (completion->priv->tree_view))
gtk_tree_selection_unselect_all (selection);
}
}
/* public API */
/**
* gtk_entry_completion_new:
*
* Creates a new #GtkEntryCompletion object.
*
* Return value: A newly created #GtkEntryCompletion object.
*
* Since: 2.4
*/
GtkEntryCompletion *
gtk_entry_completion_new (void)
{
GtkEntryCompletion *completion;
completion = g_object_new (GTK_TYPE_ENTRY_COMPLETION, NULL);
return completion;
}
/**
* gtk_entry_completion_get_entry:
* @completion: A #GtkEntryCompletion.
*
* Gets the entry @completion has been attached to.
*
* Return value: The entry @completion has been attached to.
*
* Since: 2.4
*/
GtkWidget *
gtk_entry_completion_get_entry (GtkEntryCompletion *completion)
{
g_return_val_if_fail (GTK_IS_ENTRY_COMPLETION (completion), NULL);
return completion->priv->entry;
}
/**
* gtk_entry_completion_set_model:
* @completion: A #GtkEntryCompletion.
* @model: The #GtkTreeModel.
*
* Sets the model for a #GtkEntryCompletion. If @completion already has
* a model set, it will remove it before setting the new model.
* If model is %NULL, then it will unset the model.
*
* Since: 2.4
*/
void
gtk_entry_completion_set_model (GtkEntryCompletion *completion,
GtkTreeModel *model)
{
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (completion));
g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
/* code will unref the old filter model (if any) */
completion->priv->filter_model =
GTK_TREE_MODEL_FILTER (gtk_tree_model_filter_new (model, NULL));
gtk_tree_model_filter_set_visible_func (completion->priv->filter_model,
gtk_entry_completion_visible_func,
completion,
NULL);
gtk_tree_view_set_model (GTK_TREE_VIEW (completion->priv->tree_view),
GTK_TREE_MODEL (completion->priv->filter_model));
g_object_unref (G_OBJECT (completion->priv->filter_model));
}
/**
* gtk_entry_completion_get_model:
* @completion: A #GtkEntryCompletion.
*
* Returns the model the #GtkEntryCompletion is using as data source.
* Returns %NULL if the model is unset.
*
* Return value: A #GtkTreeModel, or %NULL if none is currently being used.
*
* Since: 2.4
*/
GtkTreeModel *
gtk_entry_completion_get_model (GtkEntryCompletion *completion)
{
g_return_val_if_fail (GTK_IS_ENTRY_COMPLETION (completion), NULL);
return gtk_tree_model_filter_get_model (completion->priv->filter_model);
}
/**
* gtk_entry_completion_set_match_func:
* @completion: A #GtkEntryCompletion.
* @func: The #GtkEntryCompletionMatchFunc to use.
* @func_data: The user data for @func.
* @func_notify: Destroy notifier for @func_data.
*
* Sets the match function for @completion to be @func. The match function
* is used to determine if a row should or should not be in the completion
* list.
*
* Since: 2.4.
*/
void
gtk_entry_completion_set_match_func (GtkEntryCompletion *completion,
GtkEntryCompletionMatchFunc func,
gpointer func_data,
GDestroyNotify func_notify)
{
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (completion));
if (completion->priv->match_notify)
(* completion->priv->match_notify) (completion->priv->match_data);
completion->priv->match_func = func;
completion->priv->match_data = func_data;
completion->priv->match_notify = func_notify;
}
/**
* gtk_entry_completion_set_minimum_key_length:
* @completion: A #GtkEntryCompletion.
* @length: The minimum length of the key in order to start completing.
*
* Requires the length of the search key for @completion to be at least
* @length. This is useful for long lists, where completing using a small
* key takes a lot of time and will come up with meaningless results anyway
* (ie, a too large dataset).
*
* Since: 2.4
*/
void
gtk_entry_completion_set_minimum_key_length (GtkEntryCompletion *completion,
gint length)
{
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (completion));
g_return_if_fail (length >= 1);
completion->priv->minimum_key_length = length;
}
/**
* gtk_entry_completion_get_minimum_key_length:
* @completion: A #GtkEntryCompletion.
*
* Returns the minimum key length as set for @completion.
*
* Return value: The currently used minimum key length.
*
* Since: 2.4
*/
gint
gtk_entry_completion_get_minimum_key_length (GtkEntryCompletion *completion)
{
g_return_val_if_fail (GTK_IS_ENTRY_COMPLETION (completion), 0);
return completion->priv->minimum_key_length;
}
/**
* gtk_entry_completion_complete:
* @completion: A #GtkEntryCompletion.
*
* Requests a completion operation, or in other words a refiltering of the
* current list with completions, using the current key. The completion list
* view will be updated accordingly.
*
* Since: 2.4
*/
void
gtk_entry_completion_complete (GtkEntryCompletion *completion)
{
gchar *tmp;
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (completion));
g_return_if_fail (completion->priv->filter_model != NULL);
if (completion->priv->case_normalized_key)
g_free (completion->priv->case_normalized_key);
tmp = g_utf8_normalize (gtk_entry_get_text (GTK_ENTRY (completion->priv->entry)),
-1, G_NORMALIZE_ALL);
completion->priv->case_normalized_key = g_utf8_casefold (tmp, -1);
g_free (tmp);
gtk_tree_model_filter_refilter (completion->priv->filter_model);
}
static void
gtk_entry_completion_insert_action (GtkEntryCompletion *completion,
gint index,
const gchar *string,
gboolean markup)
{
GtkTreeIter iter;
gtk_list_store_insert (completion->priv->actions, &iter, index);
gtk_list_store_set (completion->priv->actions, &iter,
0, string,
1, markup,
-1);
if (!completion->priv->action_view->parent)
{
GtkTreePath *path = gtk_tree_path_new_from_indices (0, -1);
gtk_tree_view_set_cursor (GTK_TREE_VIEW (completion->priv->action_view),
path, NULL, FALSE);
gtk_tree_path_free (path);
gtk_box_pack_start (GTK_BOX (completion->priv->vbox),
completion->priv->action_view, FALSE, FALSE, 0);
gtk_widget_show (completion->priv->action_view);
}
}
/**
* gtk_entry_completion_insert_action_text:
* @completion: A #GtkEntryCompletion.
* @index_: The index of the item to insert.
* @text: Text of the item to insert.
*
* Inserts an action in @completion's action item list at position @index_
* with text @text. If you want the action item to have markup, use
* gtk_entry_completion_insert_action_markup().
*
* Since: 2.4
*/
void
gtk_entry_completion_insert_action_text (GtkEntryCompletion *completion,
gint index_,
const gchar *text)
{
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (completion));
g_return_if_fail (text != NULL);
gtk_entry_completion_insert_action (completion, index_, text, FALSE);
}
/**
* gtk_entry_completion_insert_action_markup:
* @completion: A #GtkEntryCompletion.
* @index_: The index of the item to insert.
* @markup: Markup of the item to insert.
*
* Inserts an action in @completion's action item list at position @index_
* with markup @markup.
*
* Since: 2.4
*/
void
gtk_entry_completion_insert_action_markup (GtkEntryCompletion *completion,
gint index_,
const gchar *markup)
{
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (completion));
g_return_if_fail (markup != NULL);
gtk_entry_completion_insert_action (completion, index_, markup, TRUE);
}
/**
* gtk_entry_completion_delete_action:
* @completion: A #GtkEntryCompletion.
* @index_: The index of the item to Delete.
*
* Deletes the action at @index_ from @completion's action list.
*
* Since: 2.4
*/
void
gtk_entry_completion_delete_action (GtkEntryCompletion *completion,
gint index_)
{
GtkTreeIter iter;
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (completion));
g_return_if_fail (index_ >= 0);
gtk_tree_model_iter_nth_child (GTK_TREE_MODEL (completion->priv->actions),
&iter, NULL, index_);
gtk_list_store_remove (completion->priv->actions, &iter);
}
/**
* gtk_entry_completion_set_text_column:
* @completion: A #GtkEntryCompletion.
* @column: The column in the model of @completion to get strings from.
*
* Convenience function for setting up the most used case of this code: a
* completion list with just strings. This function will set up @completion
* to have a list displaying all (and just) strings in the completion list,
* and to get those strings from @column in the model of @completion.
*
* This functions creates and adds a #GtkCellRendererText for the selected
* column. If you need to set the text column, but don't want the cell
* renderer, use g_object_set() to set the ::text_column property directly.
*
* Since: 2.4
*/
void
gtk_entry_completion_set_text_column (GtkEntryCompletion *completion,
gint column)
{
GtkCellRenderer *cell;
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (completion));
g_return_if_fail (column >= 0);
completion->priv->text_column = column;
cell = gtk_cell_renderer_text_new ();
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (completion),
cell, TRUE);
gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (completion),
cell,
"text", column);
g_object_notify (G_OBJECT (completion), "text_column");
}
/**
* gtk_entry_completion_get_text_column:
* @completion: a #GtkEntryCompletion
*
* Returns the column in the model of @completion to get strings from.
*
* Return value: the column containing the strings
*
* Since: 2.6
**/
gint
gtk_entry_completion_get_text_column (GtkEntryCompletion *completion)
{
g_return_val_if_fail (GTK_IS_ENTRY_COMPLETION (completion), -1);
return completion->priv->text_column;
}
/* private */
/* lame copy from gtkentry.c */
static void
get_borders (GtkEntry *entry,
gint *xborder,
gint *yborder)
{
GtkWidget *widget = GTK_WIDGET (entry);
gint focus_width;
gboolean interior_focus;
gtk_widget_style_get (widget,
"interior-focus", &interior_focus,
"focus-line-width", &focus_width,
NULL);
if (entry->has_frame)
{
*xborder = widget->style->xthickness;
*yborder = widget->style->ythickness;
}
else
{
*xborder = 0;
*yborder = 0;
}
if (!interior_focus)
{
*xborder += focus_width;
*yborder += focus_width;
}
}
static gboolean
gtk_entry_completion_list_enter_notify (GtkWidget *widget,
GdkEventCrossing *event,
gpointer data)
{
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (data);
return completion->priv->ignore_enter;
}
static gboolean
gtk_entry_completion_list_motion_notify (GtkWidget *widget,
GdkEventMotion *event,
gpointer data)
{
GtkEntryCompletion *completion = GTK_ENTRY_COMPLETION (data);
completion->priv->ignore_enter = FALSE;
return FALSE;
}
/* some nasty size requisition */
gboolean
_gtk_entry_completion_resize_popup (GtkEntryCompletion *completion)
{
gint x, y;
gint matches, items, height, x_border, y_border;
GdkScreen *screen;
gint monitor_num;
GdkRectangle monitor;
GtkRequisition popup_req;
GtkRequisition entry_req;
GtkTreePath *path;
gboolean above;
gint width;
gdk_window_get_origin (completion->priv->entry->window, &x, &y);
get_borders (GTK_ENTRY (completion->priv->entry), &x_border, &y_border);
matches = gtk_tree_model_iter_n_children (GTK_TREE_MODEL (completion->priv->filter_model), NULL);
items = MIN (matches, 15);
gtk_tree_view_column_cell_get_size (completion->priv->column, NULL,
NULL, NULL, NULL, &height);
if (items <= 0)
gtk_widget_hide (completion->priv->scrolled_window);
else
gtk_widget_show (completion->priv->scrolled_window);
screen = gtk_widget_get_screen (GTK_WIDGET (completion->priv->entry));
monitor_num = gdk_screen_get_monitor_at_window (screen,
GTK_WIDGET (completion->priv->entry)->window);
gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
width = MIN (completion->priv->entry->allocation.width, monitor.width);
gtk_widget_set_size_request (completion->priv->tree_view,
width - 2 * x_border, items * height);
/* default on no match */
completion->priv->current_selected = -1;
items = gtk_tree_model_iter_n_children (GTK_TREE_MODEL (completion->priv->actions), NULL);
if (items)
{
gtk_widget_show (completion->priv->action_view);
gtk_tree_view_column_cell_get_size (gtk_tree_view_get_column (GTK_TREE_VIEW (completion->priv->action_view), 0),
NULL, NULL, NULL, NULL,
&height);
gtk_widget_set_size_request (completion->priv->action_view,
width - 2 * x_border, items * height);
}
else
gtk_widget_hide (completion->priv->action_view);
gtk_widget_size_request (completion->priv->popup_window, &popup_req);
gtk_widget_size_request (completion->priv->entry, &entry_req);
if (x < monitor.x)
x = monitor.x;
else if (x + popup_req.width > monitor.x + monitor.width)
x = monitor.x + monitor.width - popup_req.width;
if (y + entry_req.height + popup_req.height <= monitor.y + monitor.height)
{
y += entry_req.height;
above = FALSE;
}
else
{
y -= popup_req.height;
above = TRUE;
}
if (matches > 0)
{
path = gtk_tree_path_new_from_indices (above ? matches - 1 : 0, -1);
gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW (completion->priv->tree_view), path,
NULL, FALSE, 0.0, 0.0);
gtk_tree_path_free (path);
}
gtk_window_move (GTK_WINDOW (completion->priv->popup_window), x, y);
return above;
}
void
_gtk_entry_completion_popup (GtkEntryCompletion *completion)
{
GtkTreeViewColumn *column;
GList *renderers;
if (GTK_WIDGET_MAPPED (completion->priv->popup_window))
return;
completion->priv->ignore_enter = TRUE;
column = gtk_tree_view_get_column (GTK_TREE_VIEW (completion->priv->action_view), 0);
renderers = gtk_tree_view_column_get_cell_renderers (column);
gtk_widget_ensure_style (completion->priv->tree_view);
g_object_set (GTK_CELL_RENDERER (renderers->data), "cell_background_gdk",
&completion->priv->tree_view->style->bg[GTK_STATE_NORMAL],
NULL);
g_list_free (renderers);
gtk_widget_show_all (completion->priv->vbox);
_gtk_entry_completion_resize_popup (completion);
gtk_widget_show (completion->priv->popup_window);
gtk_grab_add (completion->priv->popup_window);
gdk_pointer_grab (completion->priv->popup_window->window, TRUE,
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_POINTER_MOTION_MASK,
NULL, NULL, GDK_CURRENT_TIME);
}
void
_gtk_entry_completion_popdown (GtkEntryCompletion *completion)
{
if (!GTK_WIDGET_MAPPED (completion->priv->popup_window))
return;
completion->priv->ignore_enter = FALSE;
gdk_pointer_ungrab (GDK_CURRENT_TIME);
gtk_grab_remove (completion->priv->popup_window);
gtk_widget_hide (completion->priv->popup_window);
}
static gboolean
gtk_entry_completion_match_selected (GtkEntryCompletion *completion,
GtkTreeModel *model,
GtkTreeIter *iter)
{
gchar *str = NULL;
gtk_tree_model_get (model, iter, completion->priv->text_column, &str, -1);
gtk_entry_set_text (GTK_ENTRY (completion->priv->entry), str);
/* move cursor to the end */
gtk_editable_set_position (GTK_EDITABLE (completion->priv->entry), -1);
g_free (str);
return TRUE;
}
static gchar *
gtk_entry_completion_compute_prefix (GtkEntryCompletion *completion)
{
GtkTreeIter iter;
gchar *prefix = NULL;
gboolean valid;
const gchar *key = gtk_entry_get_text (GTK_ENTRY (completion->priv->entry));
valid = gtk_tree_model_get_iter_first (GTK_TREE_MODEL (completion->priv->filter_model),
&iter);
while (valid)
{
gchar *text;
gtk_tree_model_get (GTK_TREE_MODEL (completion->priv->filter_model),
&iter, completion->priv->text_column, &text,
-1);
if (g_str_has_prefix (text, key))
{
if (!prefix)
prefix = g_strdup (text);
else
{
gchar *p = prefix;
const gchar *q = text;
while (*p && *p == *q)
{
p++;
q++;
}
*p = '\0';
}
}
g_free (text);
valid = gtk_tree_model_iter_next (GTK_TREE_MODEL (completion->priv->filter_model),
&iter);
}
return prefix;
}
static gboolean
gtk_entry_completion_real_insert_prefix (GtkEntryCompletion *completion,
gchar *prefix)
{
if (prefix)
{
gint key_len;
gint prefix_len;
gint pos;
const gchar *key;
prefix_len = g_utf8_strlen (prefix, -1);
key = gtk_entry_get_text (GTK_ENTRY (completion->priv->entry));
key_len = g_utf8_strlen (key, -1);
if (prefix_len > key_len)
{
gtk_editable_insert_text (GTK_EDITABLE (completion->priv->entry),
prefix + key_len, -1, &pos);
gtk_editable_select_region (GTK_EDITABLE (completion->priv->entry),
key_len, prefix_len);
completion->priv->has_completion = TRUE;
}
}
return TRUE;
}
/**
* gtk_entry_completion_insert_prefix:
* @completion: a #GtkEntryCompletion
*
* Requests a prefix insertion.
*
* Since: 2.6
**/
void
gtk_entry_completion_insert_prefix (GtkEntryCompletion *completion)
{
gboolean done;
gchar *prefix;
g_signal_handler_block (completion->priv->entry,
completion->priv->insert_text_id);
prefix = gtk_entry_completion_compute_prefix (completion);
if (prefix)
{
g_signal_emit (completion, entry_completion_signals[INSERT_PREFIX],
0, prefix, &done);
g_free (prefix);
}
g_signal_handler_unblock (completion->priv->entry,
completion->priv->insert_text_id);
}
/**
* gtk_entry_completion_set_inline_completion:
* @completion: a #GtkEntryCompletion
* @inline_completion: %TRUE to do inline completion
*
* Sets whether the common prefix of the possible completions should
* be automatically inserted in the entry.
*
* Since: 2.6
**/
void
gtk_entry_completion_set_inline_completion (GtkEntryCompletion *completion,
gboolean inline_completion)
{
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (completion));
inline_completion = inline_completion != FALSE;
if (completion->priv->inline_completion != inline_completion)
{
completion->priv->inline_completion = inline_completion;
g_object_notify (G_OBJECT (completion), "inline_completion");
}
}
/**
* gtk_entry_completion_get_inline_completion:
* @completion: a #GtkEntryCompletion
*
* Returns whether the common prefix of the possible completions should
* be automatically inserted in the entry.
*
* Return value: %TRUE if inline completion is turned on
*
* Since: 2.6
**/
gboolean
gtk_entry_completion_get_inline_completion (GtkEntryCompletion *completion)
{
g_return_val_if_fail (GTK_IS_ENTRY_COMPLETION (completion), FALSE);
return completion->priv->inline_completion;
}
/**
* gtk_entry_completion_set_popup_completion:
* @completion: a #GtkEntryCompletion
* @popup_completion: %TRUE to do popup completion
*
* Sets whether the completions should be presented in a popup window.
*
* Since: 2.6
**/
void
gtk_entry_completion_set_popup_completion (GtkEntryCompletion *completion,
gboolean popup_completion)
{
g_return_if_fail (GTK_IS_ENTRY_COMPLETION (completion));
popup_completion = popup_completion != FALSE;
if (completion->priv->popup_completion != popup_completion)
{
completion->priv->popup_completion = popup_completion;
g_object_notify (G_OBJECT (completion), "popup_completion");
}
}
/**
* gtk_entry_completion_get_popup_completion:
* @completion: a #GtkEntryCompletion
*
* Returns whether the completions should be presented in a popup window.
*
* Return value: %TRUE if popup completion is turned on
*
* Since: 2.6
**/
gboolean
gtk_entry_completion_get_popup_completion (GtkEntryCompletion *completion)
{
g_return_val_if_fail (GTK_IS_ENTRY_COMPLETION (completion), TRUE);
return completion->priv->popup_completion;
}
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