AuroraMiddleware/gtk2
1
0
Fork 0
forked from AuroraMiddleware/gtk
Code Issues Pull Requests Projects Releases Wiki Activity
437aaccc19
gtk2/gtk/a11y/gailentry.c
Benjamin Otte 521f9e2f15 gail: Add support for action_set_description 
As set_description is never called and unsupported by the at-spi, we can
omit implementing it.
This means we can also omit get_description calls in various places, as
they'd just return the default value: NULL.
2011-07-05 16:08:04 -04:00

1384 lines
41 KiB
C
Raw Blame History

/* 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 <string.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "gailentry.h"
#include "gailcombobox.h"
#include <libgail-util/gailmisc.h>
static void gail_entry_class_init (GailEntryClass *klass);
static void gail_entry_init (GailEntry *entry);
static void gail_entry_real_initialize (AtkObject *obj,
gpointer data);
static void text_setup (GailEntry *entry,
GtkEntry *gtk_entry);
static void gail_entry_real_notify_gtk (GObject *obj,
GParamSpec *pspec);
static void gail_entry_finalize (GObject *object);
static gint gail_entry_get_index_in_parent (AtkObject *accessible);
/* atkobject.h */
static AtkStateSet* gail_entry_ref_state_set (AtkObject *accessible);
static AtkAttributeSet* gail_entry_get_attributes (AtkObject *accessible);
/* atktext.h */
static void atk_text_interface_init (AtkTextIface *iface);
static gchar* gail_entry_get_text (AtkText *text,
gint start_pos,
gint end_pos);
static gunichar gail_entry_get_character_at_offset
(AtkText *text,
gint offset);
static gchar* gail_entry_get_text_before_offset(AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset);
static gchar* gail_entry_get_text_at_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset);
static gchar* gail_entry_get_text_after_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset);
static gint gail_entry_get_caret_offset (AtkText *text);
static gboolean gail_entry_set_caret_offset (AtkText *text,
gint offset);
static gint gail_entry_get_n_selections (AtkText *text);
static gchar* gail_entry_get_selection (AtkText *text,
gint selection_num,
gint *start_offset,
gint *end_offset);
static gboolean gail_entry_add_selection (AtkText *text,
gint start_offset,
gint end_offset);
static gboolean gail_entry_remove_selection (AtkText *text,
gint selection_num);
static gboolean gail_entry_set_selection (AtkText *text,
gint selection_num,
gint start_offset,
gint end_offset);
static gint gail_entry_get_character_count (AtkText *text);
static AtkAttributeSet * gail_entry_get_run_attributes
(AtkText *text,
gint offset,
gint *start_offset,
gint *end_offset);
static AtkAttributeSet * gail_entry_get_default_attributes
(AtkText *text);
static void gail_entry_get_character_extents (AtkText *text,
gint offset,
gint *x,
gint *y,
gint *width,
gint *height,
AtkCoordType coords);
static gint gail_entry_get_offset_at_point (AtkText *text,
gint x,
gint y,
AtkCoordType coords);
/* atkeditabletext.h */
static void atk_editable_text_interface_init (AtkEditableTextIface *iface);
static void gail_entry_set_text_contents (AtkEditableText *text,
const gchar *string);
static void gail_entry_insert_text (AtkEditableText *text,
const gchar *string,
gint length,
gint *position);
static void gail_entry_copy_text (AtkEditableText *text,
gint start_pos,
gint end_pos);
static void gail_entry_cut_text (AtkEditableText *text,
gint start_pos,
gint end_pos);
static void gail_entry_delete_text (AtkEditableText *text,
gint start_pos,
gint end_pos);
static void gail_entry_paste_text (AtkEditableText *text,
gint position);
static void gail_entry_paste_received (GtkClipboard *clipboard,
const gchar *text,
gpointer data);
/* Callbacks */
static gboolean gail_entry_idle_notify_insert (gpointer data);
static void gail_entry_notify_insert (GailEntry *entry);
static void gail_entry_notify_delete (GailEntry *entry);
static void _gail_entry_insert_text_cb (GtkEntry *entry,
gchar *arg1,
gint arg2,
gpointer arg3);
static void _gail_entry_delete_text_cb (GtkEntry *entry,
gint arg1,
gint arg2);
static void _gail_entry_changed_cb (GtkEntry *entry);
static gboolean check_for_selection_change (GailEntry *entry,
GtkEntry *gtk_entry);
static void atk_action_interface_init (AtkActionIface *iface);
static gboolean gail_entry_do_action (AtkAction *action,
gint i);
static gboolean idle_do_action (gpointer data);
static gint gail_entry_get_n_actions (AtkAction *action);
static const gchar* gail_entry_get_keybinding (AtkAction *action,
gint i);
static const gchar* gail_entry_action_get_name (AtkAction *action,
gint i);
typedef struct _GailEntryPaste GailEntryPaste;
struct _GailEntryPaste
{
GtkEntry* entry;
gint position;
};
G_DEFINE_TYPE_WITH_CODE (GailEntry, gail_entry, GAIL_TYPE_WIDGET,
G_IMPLEMENT_INTERFACE (ATK_TYPE_EDITABLE_TEXT, atk_editable_text_interface_init)
G_IMPLEMENT_INTERFACE (ATK_TYPE_TEXT, atk_text_interface_init)
G_IMPLEMENT_INTERFACE (ATK_TYPE_ACTION, atk_action_interface_init))
static void
gail_entry_class_init (GailEntryClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
GailWidgetClass *widget_class;
widget_class = (GailWidgetClass*)klass;
gobject_class->finalize = gail_entry_finalize;
class->ref_state_set = gail_entry_ref_state_set;
class->get_index_in_parent = gail_entry_get_index_in_parent;
class->initialize = gail_entry_real_initialize;
class->get_attributes = gail_entry_get_attributes;
widget_class->notify_gtk = gail_entry_real_notify_gtk;
}
static void
gail_entry_init (GailEntry *entry)
{
entry->textutil = NULL;
entry->signal_name_insert = NULL;
entry->signal_name_delete = NULL;
entry->cursor_position = 0;
entry->selection_bound = 0;
entry->activate_keybinding = NULL;
}
static void
gail_entry_real_initialize (AtkObject *obj,
gpointer data)
{
GtkEntry *entry;
GailEntry *gail_entry;
gint start_pos, end_pos;
ATK_OBJECT_CLASS (gail_entry_parent_class)->initialize (obj, data);
gail_entry = GAIL_ENTRY (obj);
gail_entry->textutil = gail_text_util_new ();
g_assert (GTK_IS_ENTRY (data));
entry = GTK_ENTRY (data);
text_setup (gail_entry, entry);
gtk_editable_get_selection_bounds (GTK_EDITABLE (entry),
&start_pos, &end_pos);
gail_entry->cursor_position = end_pos;
gail_entry->selection_bound = start_pos;
/* Set up signal callbacks */
g_signal_connect (data, "insert-text",
G_CALLBACK (_gail_entry_insert_text_cb), NULL);
g_signal_connect (data, "delete-text",
G_CALLBACK (_gail_entry_delete_text_cb), NULL);
g_signal_connect (data, "changed",
G_CALLBACK (_gail_entry_changed_cb), NULL);
if (gtk_entry_get_visibility (entry))
obj->role = ATK_ROLE_TEXT;
else
obj->role = ATK_ROLE_PASSWORD_TEXT;
}
static void
gail_entry_real_notify_gtk (GObject *obj,
GParamSpec *pspec)
{
GtkWidget *widget;
AtkObject* atk_obj;
GtkEntry* gtk_entry;
GailEntry* entry;
widget = GTK_WIDGET (obj);
atk_obj = gtk_widget_get_accessible (widget);
gtk_entry = GTK_ENTRY (widget);
entry = GAIL_ENTRY (atk_obj);
if (strcmp (pspec->name, "cursor-position") == 0)
{
if (entry->insert_idle_handler == 0)
entry->insert_idle_handler = gdk_threads_add_idle (gail_entry_idle_notify_insert, entry);
if (check_for_selection_change (entry, gtk_entry))
g_signal_emit_by_name (atk_obj, "text_selection_changed");
/*
* The entry cursor position has moved so generate the signal.
*/
g_signal_emit_by_name (atk_obj, "text_caret_moved",
entry->cursor_position);
}
else if (strcmp (pspec->name, "selection-bound") == 0)
{
if (entry->insert_idle_handler == 0)
entry->insert_idle_handler = gdk_threads_add_idle (gail_entry_idle_notify_insert, entry);
if (check_for_selection_change (entry, gtk_entry))
g_signal_emit_by_name (atk_obj, "text_selection_changed");
}
else if (strcmp (pspec->name, "editable") == 0)
{
gboolean value;
g_object_get (obj, "editable", &value, NULL);
atk_object_notify_state_change (atk_obj, ATK_STATE_EDITABLE,
value);
}
else if (strcmp (pspec->name, "visibility") == 0)
{
gboolean visibility;
AtkRole new_role;
text_setup (entry, gtk_entry);
visibility = gtk_entry_get_visibility (gtk_entry);
new_role = visibility ? ATK_ROLE_TEXT : ATK_ROLE_PASSWORD_TEXT;
atk_object_set_role (atk_obj, new_role);
}
else if (strcmp (pspec->name, "invisible-char") == 0)
{
text_setup (entry, gtk_entry);
}
else if (strcmp (pspec->name, "editing-canceled") == 0)
{
if (entry->insert_idle_handler)
{
g_source_remove (entry->insert_idle_handler);
entry->insert_idle_handler = 0;
}
}
else
GAIL_WIDGET_CLASS (gail_entry_parent_class)->notify_gtk (obj, pspec);
}
static void
text_setup (GailEntry *entry,
GtkEntry *gtk_entry)
{
if (gtk_entry_get_visibility (gtk_entry))
{
gail_text_util_text_setup (entry->textutil, gtk_entry_get_text (gtk_entry));
}
else
{
gunichar invisible_char;
GString *tmp_string = g_string_new (NULL);
gint ch_len;
gchar buf[7];
guint length;
gint i;
invisible_char = gtk_entry_get_invisible_char (gtk_entry);
if (invisible_char == 0)
invisible_char = ' ';
ch_len = g_unichar_to_utf8 (invisible_char, buf);
length = gtk_entry_get_text_length (gtk_entry);
for (i = 0; i < length; i++)
{
g_string_append_len (tmp_string, buf, ch_len);
}
gail_text_util_text_setup (entry->textutil, tmp_string->str);
g_string_free (tmp_string, TRUE);
}
}
static void
gail_entry_finalize (GObject *object)
{
GailEntry *entry = GAIL_ENTRY (object);
g_object_unref (entry->textutil);
g_free (entry->activate_keybinding);
if (entry->action_idle_handler)
{
g_source_remove (entry->action_idle_handler);
entry->action_idle_handler = 0;
}
if (entry->insert_idle_handler)
{
g_source_remove (entry->insert_idle_handler);
entry->insert_idle_handler = 0;
}
G_OBJECT_CLASS (gail_entry_parent_class)->finalize (object);
}
static gint
gail_entry_get_index_in_parent (AtkObject *accessible)
{
/*
* If the parent widget is a combo box then the index is 1
* otherwise do the normal thing.
*/
if (accessible->accessible_parent)
if (GAIL_IS_COMBO_BOX (accessible->accessible_parent))
return 1;
return ATK_OBJECT_CLASS (gail_entry_parent_class)->get_index_in_parent (accessible);
}
/* atkobject.h */
static AtkStateSet*
gail_entry_ref_state_set (AtkObject *accessible)
{
AtkStateSet *state_set;
GtkEntry *entry;
gboolean value;
GtkWidget *widget;
state_set = ATK_OBJECT_CLASS (gail_entry_parent_class)->ref_state_set (accessible);
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (accessible));
if (widget == NULL)
return state_set;
entry = GTK_ENTRY (widget);
g_object_get (G_OBJECT (entry), "editable", &value, NULL);
if (value)
atk_state_set_add_state (state_set, ATK_STATE_EDITABLE);
atk_state_set_add_state (state_set, ATK_STATE_SINGLE_LINE);
return state_set;
}
static AtkAttributeSet *
gail_entry_get_attributes (AtkObject *accessible)
{
GtkWidget *widget;
AtkAttributeSet *attributes;
AtkAttribute *placeholder_text;
const gchar *text;
attributes = ATK_OBJECT_CLASS (gail_entry_parent_class)->get_attributes (accessible);
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (accessible));
if (widget == NULL)
return attributes;
text = gtk_entry_get_placeholder_text (GTK_ENTRY (widget));
if (text == NULL)
return attributes;
placeholder_text = g_malloc (sizeof (AtkAttribute));
placeholder_text->name = g_strdup ("placeholder-text");
placeholder_text->value = g_strdup (text);
attributes = g_slist_append (attributes, placeholder_text);
return attributes;
}
/* atktext.h */
static void
atk_text_interface_init (AtkTextIface *iface)
{
iface->get_text = gail_entry_get_text;
iface->get_character_at_offset = gail_entry_get_character_at_offset;
iface->get_text_before_offset = gail_entry_get_text_before_offset;
iface->get_text_at_offset = gail_entry_get_text_at_offset;
iface->get_text_after_offset = gail_entry_get_text_after_offset;
iface->get_caret_offset = gail_entry_get_caret_offset;
iface->set_caret_offset = gail_entry_set_caret_offset;
iface->get_character_count = gail_entry_get_character_count;
iface->get_n_selections = gail_entry_get_n_selections;
iface->get_selection = gail_entry_get_selection;
iface->add_selection = gail_entry_add_selection;
iface->remove_selection = gail_entry_remove_selection;
iface->set_selection = gail_entry_set_selection;
iface->get_run_attributes = gail_entry_get_run_attributes;
iface->get_default_attributes = gail_entry_get_default_attributes;
iface->get_character_extents = gail_entry_get_character_extents;
iface->get_offset_at_point = gail_entry_get_offset_at_point;
}
static gchar*
gail_entry_get_text (AtkText *text,
gint start_pos,
gint end_pos)
{
GtkWidget *widget;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return NULL;
return gail_text_util_get_substring (GAIL_ENTRY (text)->textutil, start_pos, end_pos);
}
static gchar*
gail_entry_get_text_before_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset)
{
GtkWidget *widget;
GtkEntry *entry;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return NULL;
/* Get Entry */
entry = GTK_ENTRY (widget);
return gail_text_util_get_text (GAIL_ENTRY (text)->textutil,
gtk_entry_get_layout (entry), GAIL_BEFORE_OFFSET,
boundary_type, offset, start_offset, end_offset);
}
static gchar*
gail_entry_get_text_at_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset)
{
GtkWidget *widget;
GtkEntry *entry;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return NULL;
/* Get Entry */
entry = GTK_ENTRY (widget);
return gail_text_util_get_text (GAIL_ENTRY (text)->textutil,
gtk_entry_get_layout (entry), GAIL_AT_OFFSET,
boundary_type, offset, start_offset, end_offset);
}
static gchar*
gail_entry_get_text_after_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset)
{
GtkWidget *widget;
GtkEntry *entry;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return NULL;
/* Get Entry */
entry = GTK_ENTRY (widget);
return gail_text_util_get_text (GAIL_ENTRY (text)->textutil,
gtk_entry_get_layout (entry), GAIL_AFTER_OFFSET,
boundary_type, offset, start_offset, end_offset);
}
static gint
gail_entry_get_character_count (AtkText *text)
{
GtkEntry *entry;
GtkWidget *widget;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return 0;
entry = GTK_ENTRY (widget);
return g_utf8_strlen (gtk_entry_get_text (entry), -1);
}
static gint
gail_entry_get_caret_offset (AtkText *text)
{
GtkEntry *entry;
GtkWidget *widget;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return 0;
entry = GTK_ENTRY (widget);
return gtk_editable_get_position (GTK_EDITABLE (entry));
}
static gboolean
gail_entry_set_caret_offset (AtkText *text, gint offset)
{
GtkEntry *entry;
GtkWidget *widget;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return FALSE;
entry = GTK_ENTRY (widget);
gtk_editable_set_position (GTK_EDITABLE (entry), offset);
return TRUE;
}
static AtkAttributeSet*
gail_entry_get_run_attributes (AtkText *text,
gint offset,
gint *start_offset,
gint *end_offset)
{
GtkWidget *widget;
GtkEntry *entry;
AtkAttributeSet *at_set = NULL;
GtkTextDirection dir;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return NULL;
entry = GTK_ENTRY (widget);
dir = gtk_widget_get_direction (widget);
if (dir == GTK_TEXT_DIR_RTL)
{
at_set = gail_misc_add_attribute (at_set,
ATK_TEXT_ATTR_DIRECTION,
g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_DIRECTION, dir)));
}
at_set = gail_misc_layout_get_run_attributes (at_set,
gtk_entry_get_layout (entry),
(gchar*)gtk_entry_get_text (entry),
offset,
start_offset,
end_offset);
return at_set;
}
static AtkAttributeSet*
gail_entry_get_default_attributes (AtkText *text)
{
GtkWidget *widget;
GtkEntry *entry;
AtkAttributeSet *at_set = NULL;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return NULL;
entry = GTK_ENTRY (widget);
at_set = gail_misc_get_default_attributes (at_set,
gtk_entry_get_layout (entry),
widget);
return at_set;
}
static void
gail_entry_get_character_extents (AtkText *text,
gint offset,
gint *x,
gint *y,
gint *width,
gint *height,
AtkCoordType coords)
{
GtkWidget *widget;
GtkEntry *entry;
PangoRectangle char_rect;
gint index, x_layout, y_layout;
const gchar *entry_text;
gint start_pos, end_pos;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return;
entry = GTK_ENTRY (widget);
gtk_editable_get_selection_bounds (GTK_EDITABLE (entry),
&start_pos, &end_pos);
gtk_entry_get_layout_offsets (entry, &x_layout, &y_layout);
entry_text = gtk_entry_get_text (entry);
index = g_utf8_offset_to_pointer (entry_text, offset) - entry_text;
/* FIXME: entry->preedit cannot be accessed directly
cursor_index = g_utf8_offset_to_pointer (entry_text, end_pos) - entry_text;
if (index > cursor_index)
index += entry->preedit_length;
*/
pango_layout_index_to_pos (gtk_entry_get_layout(entry), index, &char_rect);
gail_misc_get_extents_from_pango_rectangle (widget, &char_rect,
x_layout, y_layout, x, y, width, height, coords);
}
static gint
gail_entry_get_offset_at_point (AtkText *text,
gint x,
gint y,
AtkCoordType coords)
{
GtkWidget *widget;
GtkEntry *entry;
gint index, x_layout, y_layout;
const gchar *entry_text;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return -1;
entry = GTK_ENTRY (widget);
gtk_entry_get_layout_offsets (entry, &x_layout, &y_layout);
entry_text = gtk_entry_get_text (entry);
index = gail_misc_get_index_at_point_in_layout (widget,
gtk_entry_get_layout(entry), x_layout, y_layout, x, y, coords);
if (index == -1)
{
if (coords == ATK_XY_SCREEN || coords == ATK_XY_WINDOW)
return g_utf8_strlen (entry_text, -1);
return index;
}
else
{
gint start_pos, end_pos;
gtk_editable_get_selection_bounds (GTK_EDITABLE (entry),
&start_pos, &end_pos);
/* FIXME: entry->preedit_length cannot be accessed directly
cursor_index = g_utf8_offset_to_pointer (entry_text, end_pos) - entry_text;
if (index >= cursor_index && entry->preedit_length)
{
if (index >= cursor_index + entry->preedit_length)
index -= entry->preedit_length;
else
index = cursor_index;
}
*/
return g_utf8_pointer_to_offset (entry_text, entry_text + index);
}
}
static gint
gail_entry_get_n_selections (AtkText *text)
{
GtkEntry *entry;
GtkWidget *widget;
gint select_start, select_end;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return -1;
entry = GTK_ENTRY (widget);
gtk_editable_get_selection_bounds (GTK_EDITABLE (entry), &select_start,
&select_end);
if (select_start != select_end)
return 1;
else
return 0;
}
static gchar*
gail_entry_get_selection (AtkText *text,
gint selection_num,
gint *start_pos,
gint *end_pos)
{
GtkEntry *entry;
GtkWidget *widget;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return NULL;
/* Only let the user get the selection if one is set, and if the
* selection_num is 0.
*/
if (selection_num != 0)
return NULL;
entry = GTK_ENTRY (widget);
gtk_editable_get_selection_bounds (GTK_EDITABLE (entry), start_pos, end_pos);
if (*start_pos != *end_pos)
return gtk_editable_get_chars (GTK_EDITABLE (entry), *start_pos, *end_pos);
else
return NULL;
}
static gboolean
gail_entry_add_selection (AtkText *text,
gint start_pos,
gint end_pos)
{
GtkEntry *entry;
GtkWidget *widget;
gint select_start, select_end;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return FALSE;
entry = GTK_ENTRY (widget);
gtk_editable_get_selection_bounds (GTK_EDITABLE (entry), &select_start,
&select_end);
/* If there is already a selection, then don't allow another to be added,
* since GtkEntry only supports one selected region.
*/
if (select_start == select_end)
{
gtk_editable_select_region (GTK_EDITABLE (entry), start_pos, end_pos);
return TRUE;
}
else
return FALSE;
}
static gboolean
gail_entry_remove_selection (AtkText *text,
gint selection_num)
{
GtkEntry *entry;
GtkWidget *widget;
gint select_start, select_end, caret_pos;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return FALSE;
if (selection_num != 0)
return FALSE;
entry = GTK_ENTRY (widget);
gtk_editable_get_selection_bounds (GTK_EDITABLE (entry), &select_start,
&select_end);
if (select_start != select_end)
{
/* Setting the start & end of the selected region to the caret position
* turns off the selection.
*/
caret_pos = gtk_editable_get_position (GTK_EDITABLE (entry));
gtk_editable_select_region (GTK_EDITABLE (entry), caret_pos, caret_pos);
return TRUE;
}
else
return FALSE;
}
static gboolean
gail_entry_set_selection (AtkText *text,
gint selection_num,
gint start_pos,
gint end_pos)
{
GtkEntry *entry;
GtkWidget *widget;
gint select_start, select_end;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return FALSE;
/* Only let the user move the selection if one is set, and if the
* selection_num is 0
*/
if (selection_num != 0)
return FALSE;
entry = GTK_ENTRY (widget);
gtk_editable_get_selection_bounds (GTK_EDITABLE (entry), &select_start,
&select_end);
if (select_start != select_end)
{
gtk_editable_select_region (GTK_EDITABLE (entry), start_pos, end_pos);
return TRUE;
}
else
return FALSE;
}
static void
atk_editable_text_interface_init (AtkEditableTextIface *iface)
{
iface->set_text_contents = gail_entry_set_text_contents;
iface->insert_text = gail_entry_insert_text;
iface->copy_text = gail_entry_copy_text;
iface->cut_text = gail_entry_cut_text;
iface->delete_text = gail_entry_delete_text;
iface->paste_text = gail_entry_paste_text;
iface->set_run_attributes = NULL;
}
static void
gail_entry_set_text_contents (AtkEditableText *text,
const gchar *string)
{
GtkEntry *entry;
GtkWidget *widget;
GtkEditable *editable;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return;
entry = GTK_ENTRY (widget);
editable = GTK_EDITABLE (entry);
if (!gtk_editable_get_editable (editable))
return;
gtk_entry_set_text (entry, string);
}
static void
gail_entry_insert_text (AtkEditableText *text,
const gchar *string,
gint length,
gint *position)
{
GtkEntry *entry;
GtkWidget *widget;
GtkEditable *editable;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return;
entry = GTK_ENTRY (widget);
editable = GTK_EDITABLE (entry);
if (!gtk_editable_get_editable (editable))
return;
gtk_editable_insert_text (editable, string, length, position);
gtk_editable_set_position (editable, *position);
}
static void
gail_entry_copy_text (AtkEditableText *text,
gint start_pos,
gint end_pos)
{
GtkEntry *entry;
GtkWidget *widget;
GtkEditable *editable;
gchar *str;
GtkClipboard *clipboard;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return;
entry = GTK_ENTRY (widget);
editable = GTK_EDITABLE (entry);
str = gtk_editable_get_chars (editable, start_pos, end_pos);
clipboard = gtk_clipboard_get_for_display (gtk_widget_get_display (widget),
GDK_SELECTION_CLIPBOARD);
gtk_clipboard_set_text (clipboard, str, -1);
}
static void
gail_entry_cut_text (AtkEditableText *text,
gint start_pos,
gint end_pos)
{
GtkEntry *entry;
GtkWidget *widget;
GtkEditable *editable;
gchar *str;
GtkClipboard *clipboard;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return;
entry = GTK_ENTRY (widget);
editable = GTK_EDITABLE (entry);
if (!gtk_editable_get_editable (editable))
return;
str = gtk_editable_get_chars (editable, start_pos, end_pos);
clipboard = gtk_clipboard_get_for_display (gtk_widget_get_display (widget),
GDK_SELECTION_CLIPBOARD);
gtk_clipboard_set_text (clipboard, str, -1);
gtk_editable_delete_text (editable, start_pos, end_pos);
}
static void
gail_entry_delete_text (AtkEditableText *text,
gint start_pos,
gint end_pos)
{
GtkEntry *entry;
GtkWidget *widget;
GtkEditable *editable;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return;
entry = GTK_ENTRY (widget);
editable = GTK_EDITABLE (entry);
if (!gtk_editable_get_editable (editable))
return;
gtk_editable_delete_text (editable, start_pos, end_pos);
}
static void
gail_entry_paste_text (AtkEditableText *text,
gint position)
{
GtkWidget *widget;
GtkEditable *editable;
GailEntryPaste paste_struct;
GtkClipboard *clipboard;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return;
editable = GTK_EDITABLE (widget);
if (!gtk_editable_get_editable (editable))
return;
paste_struct.entry = GTK_ENTRY (widget);
paste_struct.position = position;
g_object_ref (paste_struct.entry);
clipboard = gtk_clipboard_get_for_display (gtk_widget_get_display (widget),
GDK_SELECTION_CLIPBOARD);
gtk_clipboard_request_text (clipboard,
gail_entry_paste_received, &paste_struct);
}
static void
gail_entry_paste_received (GtkClipboard *clipboard,
const gchar *text,
gpointer data)
{
GailEntryPaste* paste_struct = (GailEntryPaste *)data;
if (text)
gtk_editable_insert_text (GTK_EDITABLE (paste_struct->entry), text, -1,
&(paste_struct->position));
g_object_unref (paste_struct->entry);
}
/* Callbacks */
static gboolean
gail_entry_idle_notify_insert (gpointer data)
{
GailEntry *entry;
entry = GAIL_ENTRY (data);
entry->insert_idle_handler = 0;
gail_entry_notify_insert (entry);
return FALSE;
}
static void
gail_entry_notify_insert (GailEntry *entry)
{
GtkWidget *widget;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (entry));
if (gtk_entry_get_text_length (GTK_ENTRY (widget)) == 0)
return;
if (entry->signal_name_insert)
{
g_signal_emit_by_name (entry,
entry->signal_name_insert,
entry->position_insert,
entry->length_insert);
entry->signal_name_insert = NULL;
}
}
/* Note arg1 returns the character at the start of the insert.
* arg2 returns the number of characters inserted.
*/
static void
_gail_entry_insert_text_cb (GtkEntry *entry,
gchar *arg1,
gint arg2,
gpointer arg3)
{
AtkObject *accessible;
GailEntry *gail_entry;
gint *position = (gint *) arg3;
if (arg2 == 0)
return;
accessible = gtk_widget_get_accessible (GTK_WIDGET (entry));
gail_entry = GAIL_ENTRY (accessible);
if (!gail_entry->signal_name_insert)
{
gail_entry->signal_name_insert = "text_changed::insert";
gail_entry->position_insert = *position;
gail_entry->length_insert = g_utf8_strlen(arg1, arg2);
}
/*
* The signal will be emitted when the cursor position is updated.
* or in an idle handler if it not updated.
*/
if (gail_entry->insert_idle_handler == 0)
gail_entry->insert_idle_handler = gdk_threads_add_idle (gail_entry_idle_notify_insert, gail_entry);
}
static gunichar
gail_entry_get_character_at_offset (AtkText *text,
gint offset)
{
GtkWidget *widget;
GailEntry *entry;
gchar *string;
gchar *index;
gunichar unichar;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return '\0';
entry = GAIL_ENTRY (text);
string = gail_text_util_get_substring (entry->textutil, 0, -1);
if (offset >= g_utf8_strlen (string, -1))
{
unichar = '\0';
}
else
{
index = g_utf8_offset_to_pointer (string, offset);
unichar = g_utf8_get_char(index);
}
g_free(string);
return unichar;
}
static void
gail_entry_notify_delete (GailEntry *entry)
{
if (entry->signal_name_delete)
{
g_signal_emit_by_name (entry,
entry->signal_name_delete,
entry->position_delete,
entry->length_delete);
entry->signal_name_delete = NULL;
}
}
/* Note arg1 returns the start of the delete range, arg2 returns the
* end of the delete range if multiple characters are deleted.
*/
static void
_gail_entry_delete_text_cb (GtkEntry *entry,
gint arg1,
gint arg2)
{
AtkObject *accessible;
GailEntry *gail_entry;
/*
* Zero length text deleted so ignore
*/
if (arg2 - arg1 == 0)
return;
accessible = gtk_widget_get_accessible (GTK_WIDGET (entry));
gail_entry = GAIL_ENTRY (accessible);
if (!gail_entry->signal_name_delete)
{
gail_entry->signal_name_delete = "text_changed::delete";
gail_entry->position_delete = arg1;
gail_entry->length_delete = arg2 - arg1;
}
gail_entry_notify_delete (gail_entry);
}
static void
_gail_entry_changed_cb (GtkEntry *entry)
{
AtkObject *accessible;
GailEntry *gail_entry;
accessible = gtk_widget_get_accessible (GTK_WIDGET (entry));
gail_entry = GAIL_ENTRY (accessible);
text_setup (gail_entry, entry);
}
static gboolean
check_for_selection_change (GailEntry *entry,
GtkEntry *gtk_entry)
{
gboolean selected, ret_val = FALSE;
gint start_pos, end_pos;
selected = gtk_editable_get_selection_bounds (GTK_EDITABLE (gtk_entry),
&start_pos, &end_pos);
if (selected)
{
if (end_pos != entry->cursor_position ||
start_pos != entry->selection_bound)
/*
* This check is here as this function can be called
* for notification of selection_bound and current_pos.
* The values of current_pos and selection_bound may be the same
* for both notifications and we only want to generate one
* text_selection_changed signal.
*/
ret_val = TRUE;
}
else
{
/* We had a selection */
ret_val = (entry->cursor_position != entry->selection_bound);
}
entry->cursor_position = end_pos;
entry->selection_bound = start_pos;
return ret_val;
}
static void
atk_action_interface_init (AtkActionIface *iface)
{
iface->do_action = gail_entry_do_action;
iface->get_n_actions = gail_entry_get_n_actions;
iface->get_keybinding = gail_entry_get_keybinding;
iface->get_name = gail_entry_action_get_name;
}
static gboolean
gail_entry_do_action (AtkAction *action,
gint i)
{
GailEntry *entry;
GtkWidget *widget;
gboolean return_value = TRUE;
entry = GAIL_ENTRY (action);
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (action));
if (widget == NULL)
/*
* State is defunct
*/
return FALSE;
if (!gtk_widget_get_sensitive (widget) || !gtk_widget_get_visible (widget))
return FALSE;
switch (i)
{
case 0:
if (entry->action_idle_handler)
return_value = FALSE;
else
entry->action_idle_handler = gdk_threads_add_idle (idle_do_action, entry);
break;
default:
return_value = FALSE;
break;
}
return return_value;
}
static gboolean
idle_do_action (gpointer data)
{
GailEntry *entry;
GtkWidget *widget;
entry = GAIL_ENTRY (data);
entry->action_idle_handler = 0;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (entry));
if (widget == NULL /* State is defunct */ ||
!gtk_widget_get_sensitive (widget) || !gtk_widget_get_visible (widget))
return FALSE;
gtk_widget_activate (widget);
return FALSE;
}
static gint
gail_entry_get_n_actions (AtkAction *action)
{
return 1;
}
static const gchar*
gail_entry_get_keybinding (AtkAction *action,
gint i)
{
GailEntry *entry;
gchar *return_value = NULL;
entry = GAIL_ENTRY (action);
switch (i)
{
case 0:
{
/*
* We look for a mnemonic on the label
*/
GtkWidget *widget;
GtkWidget *label;
AtkRelationSet *set;
AtkRelation *relation;
GPtrArray *target;
gpointer target_object;
guint key_val;
entry = GAIL_ENTRY (action);
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (entry));
if (widget == NULL)
/*
* State is defunct
*/
return NULL;
/* Find labelled-by relation */
set = atk_object_ref_relation_set (ATK_OBJECT (action));
if (!set)
return NULL;
label = NULL;
relation = atk_relation_set_get_relation_by_type (set, ATK_RELATION_LABELLED_BY);
if (relation)
{
target = atk_relation_get_target (relation);
target_object = g_ptr_array_index (target, 0);
label = gtk_accessible_get_widget (GTK_ACCESSIBLE (target_object));
}
g_object_unref (set);
if (GTK_IS_LABEL (label))
{
key_val = gtk_label_get_mnemonic_keyval (GTK_LABEL (label));
if (key_val != GDK_KEY_VoidSymbol)
return_value = gtk_accelerator_name (key_val, GDK_MOD1_MASK);
}
g_free (entry->activate_keybinding);
entry->activate_keybinding = return_value;
break;
}
default:
break;
}
return return_value;
}
static const gchar*
gail_entry_action_get_name (AtkAction *action,
gint i)
{
const gchar *return_value;
switch (i)
{
case 0:
return_value = "activate";
break;
default:
return_value = NULL;
break;
}
return return_value;
}
Reference in New Issue View Git Blame Copy Permalink