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-rw-r--r--widgets/text/gal-a11y-e-text.c1122
1 files changed, 1122 insertions, 0 deletions
diff --git a/widgets/text/gal-a11y-e-text.c b/widgets/text/gal-a11y-e-text.c
new file mode 100644
index 0000000000..113c503da9
--- /dev/null
+++ b/widgets/text/gal-a11y-e-text.c
@@ -0,0 +1,1122 @@
+/*
+ * This program 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) version 3.
+ *
+ * This program 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 the program; if not, see <http://www.gnu.org/licenses/>
+ *
+ *
+ * Authors:
+ * Christopher James Lahey <clahey@ximian.com>
+ *
+ * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
+ *
+ */
+
+#include <config.h>
+
+#include <string.h>
+
+#include <gtk/gtk.h>
+
+#include "a11y/gal-a11y-util.h"
+#include "text/e-text.h"
+#include "text/e-text-model-repos.h"
+
+#include "gal-a11y-e-text.h"
+#include "gal-a11y-e-text-factory.h"
+
+#define CS_CLASS(a11y) (G_TYPE_INSTANCE_GET_CLASS ((a11y), C_TYPE_STREAM, GalA11yETextClass))
+static GObjectClass *parent_class;
+static AtkComponentIface *component_parent_iface;
+static GType parent_type;
+static gint priv_offset;
+static GQuark quark_accessible_object = 0;
+#define GET_PRIVATE(object) ((GalA11yETextPrivate *) (((gchar *) object) + priv_offset))
+#define PARENT_TYPE (parent_type)
+
+struct _GalA11yETextPrivate {
+ gint dummy;
+};
+
+static void
+et_dispose (GObject *object)
+{
+ if (parent_class->dispose)
+ parent_class->dispose (object);
+}
+
+/* Static functions */
+
+static void
+et_get_extents (AtkComponent *component,
+ gint *x,
+ gint *y,
+ gint *width,
+ gint *height,
+ AtkCoordType coord_type)
+{
+ EText *item = E_TEXT (atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (component)));
+ double real_width;
+ double real_height;
+ gint fake_width;
+ gint fake_height;
+
+ if (component_parent_iface &&
+ component_parent_iface->get_extents)
+ component_parent_iface->get_extents (component,
+ x,
+ y,
+ &fake_width,
+ &fake_height,
+ coord_type);
+
+ g_object_get (item,
+ "text_width", &real_width,
+ "text_height", &real_height,
+ NULL);
+
+ if (width)
+ *width = real_width;
+ if (height)
+ *height = real_height;
+}
+
+static const gchar *
+et_get_full_text (AtkText *text)
+{
+ EText *etext = E_TEXT (atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (text)));
+ ETextModel *model;
+ const gchar *full_text;
+
+ g_object_get (etext, "model", &model, NULL);
+
+ full_text = e_text_model_get_text (model);
+
+ return full_text;
+}
+
+static void
+et_set_full_text (AtkEditableText *text,
+ const gchar *full_text)
+{
+ EText *etext = E_TEXT (atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (text)));
+ ETextModel *model;
+
+ g_object_get (etext, "model", &model, NULL);
+
+ e_text_model_set_text (model, full_text);
+}
+
+static gchar *
+et_get_text (AtkText *text,
+ gint start_offset,
+ gint end_offset)
+{
+ gint start, end, real_start, real_end, len;
+ const gchar *full_text = et_get_full_text (text);
+ if (full_text == NULL)
+ return NULL;
+ len = g_utf8_strlen (full_text, -1);
+
+ start = MIN (MAX (0, start_offset), len);
+ end = MIN (MAX (-1, end_offset), len);
+
+ if (end_offset == -1)
+ end = strlen (full_text);
+ else
+ end = g_utf8_offset_to_pointer (full_text, end) - full_text;
+
+ start = g_utf8_offset_to_pointer (full_text, start) - full_text;
+
+ real_start = MIN (start, end);
+ real_end = MAX (start, end);
+
+ return g_strndup (full_text + real_start, real_end - real_start);
+}
+
+static gboolean
+is_a_seperator (gunichar c)
+{
+ return g_unichar_ispunct(c) || g_unichar_isspace(c);
+}
+
+static gint
+find_word_start (const gchar *text,
+ gint begin_offset,
+ gint step)
+{
+ gint offset;
+ gchar *at_offset;
+ gunichar current, previous;
+ gint len;
+
+ offset = begin_offset;
+ len = g_utf8_strlen (text, -1);
+
+ while (offset > 0 && offset < len) {
+ at_offset = g_utf8_offset_to_pointer (text, offset);
+ current = g_utf8_get_char_validated (at_offset, -1);
+ at_offset = g_utf8_offset_to_pointer (text, offset-1);
+ previous = g_utf8_get_char_validated (at_offset, -1);
+ if ((! is_a_seperator (current)) && is_a_seperator (previous))
+ break;
+ offset += step;
+ }
+
+ return offset;
+}
+
+static gint
+find_word_end (const gchar *text,
+ gint begin_offset,
+ gint step)
+{
+ gint offset;
+ gchar *at_offset;
+ gunichar current, previous;
+ gint len;
+
+ offset = begin_offset;
+ len = g_utf8_strlen (text, -1);
+
+ while (offset > 0 && offset < len) {
+ at_offset = g_utf8_offset_to_pointer (text, offset);
+ current = g_utf8_get_char_validated (at_offset, -1);
+ at_offset = g_utf8_offset_to_pointer (text, offset-1);
+ previous = g_utf8_get_char_validated (at_offset, -1);
+ if (is_a_seperator (current) && (! is_a_seperator (previous)))
+ break;
+ offset += step;
+ }
+
+ return offset;
+}
+
+static gint
+find_sentence_start (const gchar *text,
+ gint begin_offset,
+ gint step)
+{
+ gint offset, last_word_end, len;
+ gchar *at_offset;
+ gunichar ch;
+ gint i;
+
+ offset = find_word_start (text, begin_offset, step);
+ len = g_utf8_strlen (text, -1);
+
+ while (offset>0 && offset <len) {
+ last_word_end = find_word_end (text, offset - 1, -1);
+ if (last_word_end == 0)
+ break;
+ for (i = last_word_end; i < offset; i++) {
+ at_offset = g_utf8_offset_to_pointer (text, i);
+ ch = g_utf8_get_char_validated (at_offset, -1);
+ if (ch == '.' || ch == '!' || ch == '?')
+ return offset;
+ }
+
+ offset = find_word_start (text, offset + step, step);
+ }
+
+ return offset;
+}
+
+static gint
+find_sentence_end (const gchar *text,
+ gint begin_offset,
+ gint step)
+{
+ gint offset;
+ gchar *at_offset;
+ gunichar previous;
+ gint len;
+
+ offset = begin_offset;
+ len = g_utf8_strlen (text, -1);
+
+ while (offset > 0 && offset < len) {
+ at_offset = g_utf8_offset_to_pointer (text, offset - 1);
+ previous = g_utf8_get_char_validated (at_offset, -1);
+ if (previous == '.' || previous == '!' || previous == '?')
+ break;
+ offset += step;
+ }
+
+ return offset;
+}
+
+static gint
+find_line_start (const gchar *text,
+ gint begin_offset,
+ gint step)
+{
+ gint offset;
+ gchar *at_offset;
+ gunichar previous;
+ gint len;
+
+ offset = begin_offset;
+ len = g_utf8_strlen (text, -1);
+
+ while (offset > 0 && offset < len) {
+ at_offset = g_utf8_offset_to_pointer (text, offset - 1);
+ previous = g_utf8_get_char_validated (at_offset, -1);
+ if (previous == '\n' || previous == '\r')
+ break;
+ offset += step;
+ }
+
+ return offset;
+}
+
+static gint
+find_line_end (const gchar *text,
+ gint begin_offset,
+ gint step)
+{
+ gint offset;
+ gchar *at_offset;
+ gunichar current;
+ gint len;
+
+ offset = begin_offset;
+ len = g_utf8_strlen (text, -1);
+
+ while (offset >= 0 && offset < len) {
+ at_offset = g_utf8_offset_to_pointer (text, offset);
+ current = g_utf8_get_char_validated (at_offset, -1);
+ if (current == '\n' || current == '\r')
+ break;
+ offset += step;
+ }
+
+ return offset;
+}
+
+static gchar *
+et_get_text_after_offset (AtkText *text,
+ gint offset,
+ AtkTextBoundary boundary_type,
+ gint *start_offset,
+ gint *end_offset)
+{
+ gint start, end, len;
+ const gchar *full_text = et_get_full_text (text);
+ g_return_val_if_fail (full_text, NULL);
+
+ switch (boundary_type)
+ {
+ case ATK_TEXT_BOUNDARY_CHAR:
+ start = offset + 1;
+ end = offset + 2;
+ break;
+ case ATK_TEXT_BOUNDARY_WORD_START:
+ start = find_word_start (full_text, offset + 1, 1);
+ end = find_word_start (full_text, start + 1, 1);
+ break;
+ case ATK_TEXT_BOUNDARY_WORD_END:
+ start = find_word_end (full_text, offset + 1, 1);
+ end = find_word_end (full_text, start + 1, 1);
+ break;
+ case ATK_TEXT_BOUNDARY_SENTENCE_START:
+ start = find_sentence_start (full_text, offset + 1, 1);
+ end = find_sentence_start (full_text, start + 1, 1);
+ break;
+ case ATK_TEXT_BOUNDARY_SENTENCE_END:
+ start = find_sentence_end (full_text, offset + 1, 1);
+ end = find_sentence_end (full_text, start + 1, 1);
+ break;
+ case ATK_TEXT_BOUNDARY_LINE_START:
+ start = find_line_start (full_text, offset + 1, 1);
+ end = find_line_start (full_text, start + 1, 1);
+ break;
+ case ATK_TEXT_BOUNDARY_LINE_END:
+ start = find_line_end (full_text, offset + 1, 1);
+ end = find_line_end (full_text, start + 1, 1);
+ break;
+ default:
+ return NULL;
+ }
+
+ len = g_utf8_strlen (full_text, -1);
+ if (start_offset)
+ *start_offset = MIN (MAX (0, start), len);
+ if (end_offset)
+ *end_offset = MIN (MAX (0, end), len);
+ return et_get_text (text, start, end);
+}
+
+static gchar *
+et_get_text_at_offset (AtkText *text,
+ gint offset,
+ AtkTextBoundary boundary_type,
+ gint *start_offset,
+ gint *end_offset)
+{
+ gint start, end, len;
+ const gchar *full_text = et_get_full_text (text);
+ g_return_val_if_fail (full_text, NULL);
+
+ switch (boundary_type)
+ {
+ case ATK_TEXT_BOUNDARY_CHAR:
+ start = offset;
+ end = offset + 1;
+ break;
+ case ATK_TEXT_BOUNDARY_WORD_START:
+ start = find_word_start (full_text, offset - 1, -1);
+ end = find_word_start (full_text, offset, 1);
+ break;
+ case ATK_TEXT_BOUNDARY_WORD_END:
+ start = find_word_end (full_text, offset, -1);
+ end = find_word_end (full_text, offset + 1, 1);
+ break;
+ case ATK_TEXT_BOUNDARY_SENTENCE_START:
+ start = find_sentence_start (full_text, offset - 1, -1);
+ end = find_sentence_start (full_text, offset, 1);
+ break;
+ case ATK_TEXT_BOUNDARY_SENTENCE_END:
+ start = find_sentence_end (full_text, offset, -1);
+ end = find_sentence_end (full_text, offset + 1, 1);
+ break;
+ case ATK_TEXT_BOUNDARY_LINE_START:
+ start = find_line_start (full_text, offset - 1, -1);
+ end = find_line_start (full_text, offset, 1);
+ break;
+ case ATK_TEXT_BOUNDARY_LINE_END:
+ start = find_line_end (full_text, offset, -1);
+ end = find_line_end (full_text, offset + 1, 1);
+ break;
+ default:
+ return NULL;
+ }
+
+ len = g_utf8_strlen (full_text, -1);
+ if (start_offset)
+ *start_offset = MIN (MAX (0, start), len);
+ if (end_offset)
+ *end_offset = MIN (MAX (0, end), len);
+ return et_get_text (text, start, end);
+}
+
+static gunichar
+et_get_character_at_offset (AtkText *text,
+ gint offset)
+{
+ const gchar *full_text = et_get_full_text (text);
+ gchar *at_offset;
+
+ at_offset = g_utf8_offset_to_pointer (full_text, offset);
+ return g_utf8_get_char_validated (at_offset, -1);
+}
+
+static gchar *
+et_get_text_before_offset (AtkText *text,
+ gint offset,
+ AtkTextBoundary boundary_type,
+ gint *start_offset,
+ gint *end_offset)
+{
+ gint start, end, len;
+ const gchar *full_text = et_get_full_text (text);
+ g_return_val_if_fail (full_text, NULL);
+
+ switch (boundary_type)
+ {
+ case ATK_TEXT_BOUNDARY_CHAR:
+ start = offset - 1;
+ end = offset;
+ break;
+ case ATK_TEXT_BOUNDARY_WORD_START:
+ end = find_word_start (full_text, offset - 1, -1);
+ start = find_word_start (full_text, end - 1, -1);
+ break;
+ case ATK_TEXT_BOUNDARY_WORD_END:
+ end = find_word_end (full_text, offset, -1);
+ start = find_word_end (full_text, end - 1, -1);
+ break;
+ case ATK_TEXT_BOUNDARY_SENTENCE_START:
+ end = find_sentence_start (full_text, offset, -1);
+ start = find_sentence_start (full_text, end - 1, -1);
+ break;
+ case ATK_TEXT_BOUNDARY_SENTENCE_END:
+ end = find_sentence_end (full_text, offset, -1);
+ start = find_sentence_end (full_text, end - 1, -1);
+ break;
+ case ATK_TEXT_BOUNDARY_LINE_START:
+ end = find_line_start (full_text, offset, -1);
+ start = find_line_start (full_text, end - 1, -1);
+ break;
+ case ATK_TEXT_BOUNDARY_LINE_END:
+ end = find_line_end (full_text, offset, -1);
+ start = find_line_end (full_text, end - 1, -1);
+ break;
+ default:
+ return NULL;
+ }
+
+ len = g_utf8_strlen (full_text, -1);
+ if (start_offset)
+ *start_offset = MIN (MAX (0, start), len);
+ if (end_offset)
+ *end_offset = MIN (MAX (0, end), len);
+ return et_get_text (text, start, end);
+}
+
+static gint
+et_get_caret_offset (AtkText *text)
+{
+ GObject *obj;
+ EText *etext;
+ gint offset;
+
+ g_return_val_if_fail (ATK_IS_GOBJECT_ACCESSIBLE(text), -1);
+ obj = atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (text));
+ if (obj == NULL)
+ return -1;
+
+ g_return_val_if_fail (E_IS_TEXT (obj), -1);
+ etext = E_TEXT (obj);
+
+ g_object_get (etext, "cursor_pos", &offset, NULL);
+ return offset;
+}
+
+static AtkAttributeSet*
+et_get_run_attributes (AtkText *text,
+ gint offset,
+ gint *start_offset,
+ gint *end_offset)
+{
+ /* Unimplemented */
+ return NULL;
+}
+
+static AtkAttributeSet*
+et_get_default_attributes (AtkText *text)
+{
+ /* Unimplemented */
+ return NULL;
+}
+
+static void
+et_get_character_extents (AtkText *text,
+ gint offset,
+ gint *x,
+ gint *y,
+ gint *width,
+ gint *height,
+ AtkCoordType coords)
+{
+ GObject *obj;
+ EText *etext;
+ GnomeCanvas *canvas;
+ gint x_widget, y_widget, x_window, y_window;
+ GdkWindow *window;
+ GtkWidget *widget;
+ PangoRectangle pango_pos;
+
+ g_return_if_fail (ATK_IS_GOBJECT_ACCESSIBLE(text));
+ obj = atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (text));
+ if (obj == NULL)
+ return;
+ g_return_if_fail (E_IS_TEXT (obj));
+ etext = E_TEXT(obj);
+ canvas = GNOME_CANVAS_ITEM(etext)->canvas;
+ widget = GTK_WIDGET(canvas);
+ window = widget->window;
+ gdk_window_get_origin (window, &x_widget, &y_widget);
+
+ pango_layout_index_to_pos (etext->layout, offset, &pango_pos);
+ pango_pos.x = PANGO_PIXELS (pango_pos.x);
+ pango_pos.y = PANGO_PIXELS (pango_pos.y);
+ pango_pos.width = (pango_pos.width + PANGO_SCALE / 2) / PANGO_SCALE;
+ pango_pos.height = (pango_pos.height + PANGO_SCALE / 2) / PANGO_SCALE;
+
+ *x = pango_pos.x + x_widget;
+ *y = pango_pos.y + y_widget;
+
+ *width = pango_pos.width;
+ *height = pango_pos.height;
+
+ if (etext->draw_borders) {
+ *x += 3; /*BORDER_INDENT;*/
+ *y += 3; /*BORDER_INDENT;*/
+ }
+
+ *x += etext->xofs;
+ *y += etext->yofs;
+
+ if (etext->editing) {
+ *x -= etext->xofs_edit;
+ *y -= etext->yofs_edit;
+ }
+
+ *x += etext->cx;
+ *y += etext->cy;
+
+ if (coords == ATK_XY_WINDOW) {
+ window = gdk_window_get_toplevel (window);
+ gdk_window_get_origin (window, &x_window, &y_window);
+ *x -= x_window;
+ *y -= y_window;
+ }
+ else if (coords == ATK_XY_SCREEN) {
+ }
+ else {
+ *x = 0;
+ *y = 0;
+ *height = 0;
+ *width = 0;
+ }
+}
+
+static gint
+et_get_character_count (AtkText *text)
+{
+ const gchar *full_text = et_get_full_text (text);
+
+ return g_utf8_strlen (full_text, -1);
+}
+
+static gint
+et_get_offset_at_point (AtkText *text,
+ gint x,
+ gint y,
+ AtkCoordType coords)
+{
+ GObject *obj;
+ EText *etext;
+ GnomeCanvas *canvas;
+ gint x_widget, y_widget, x_window, y_window;
+ GdkWindow *window;
+ GtkWidget *widget;
+ gint index;
+ gint trailing;
+
+ g_return_val_if_fail (ATK_IS_GOBJECT_ACCESSIBLE(text), -1);
+ obj = atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (text));
+ if (obj == NULL)
+ return -1;
+ g_return_val_if_fail (E_IS_TEXT (obj), -1);
+ etext = E_TEXT(obj);
+ canvas = GNOME_CANVAS_ITEM(etext)->canvas;
+ widget = GTK_WIDGET(canvas);
+ window = widget->window;
+ gdk_window_get_origin (window, &x_widget, &y_widget);
+
+ if (coords == ATK_XY_SCREEN) {
+ x = x - x_widget;
+ y = y - y_widget;
+ }
+ else if (coords == ATK_XY_WINDOW) {
+ window = gdk_window_get_toplevel (window);
+ gdk_window_get_origin (window, &x_window, &y_window);
+ x = x - x_widget + x_window;
+ y = y - y_widget + y_window;
+ }
+ else
+ return -1;
+
+ if (etext->draw_borders) {
+ x -= 3; /*BORDER_INDENT;*/
+ y -= 3; /*BORDER_INDENT;*/
+ }
+
+ x -= etext->xofs;
+ y -= etext->yofs;
+
+ if (etext->editing) {
+ x += etext->xofs_edit;
+ y += etext->yofs_edit;
+ }
+
+ x -= etext->cx;
+ y -= etext->cy;
+
+ pango_layout_xy_to_index (etext->layout,
+ x * PANGO_SCALE - PANGO_SCALE / 2,
+ y * PANGO_SCALE - PANGO_SCALE / 2,
+ &index,
+ &trailing);
+
+ return g_utf8_pointer_to_offset (etext->text, etext->text + index + trailing);
+}
+
+static gint
+et_get_n_selections (AtkText *text)
+{
+ EText *etext = E_TEXT (atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (text)));
+ if (etext->selection_start !=
+ etext->selection_end)
+ return 1;
+ return 0;
+}
+
+static gchar *
+et_get_selection (AtkText *text,
+ gint selection_num,
+ gint *start_offset,
+ gint *end_offset)
+{
+ gint start, end, real_start, real_end, len;
+ EText *etext;
+ if (selection_num == 0) {
+ const gchar *full_text = et_get_full_text (text);
+ if (full_text == NULL)
+ return NULL;
+ len = g_utf8_strlen (full_text, -1);
+ etext = E_TEXT (atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (text)));
+ start = MIN (etext->selection_start, etext->selection_end);
+ end = MAX (etext->selection_start, etext->selection_end);
+ start = MIN (MAX (0, start), len);
+ end = MIN (MAX (0, end), len);
+ if (start != end) {
+ if (start_offset)
+ *start_offset = start;
+ if (end_offset)
+ *end_offset = end;
+ real_start = g_utf8_offset_to_pointer (full_text, start) - full_text;
+ real_end = g_utf8_offset_to_pointer (full_text, end) - full_text;
+ return g_strndup (full_text + real_start, real_end - real_start);
+ }
+ }
+
+ return NULL;
+}
+
+static gboolean
+et_add_selection (AtkText *text,
+ gint start_offset,
+ gint end_offset)
+{
+ GObject *obj;
+ EText *etext;
+
+ g_return_val_if_fail (ATK_IS_GOBJECT_ACCESSIBLE (text), FALSE);
+ obj = atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (text));
+ if (obj == NULL)
+ return FALSE;
+ g_return_val_if_fail (E_IS_TEXT (obj), FALSE);
+ etext = E_TEXT (obj);
+
+ g_return_val_if_fail (start_offset >= 0, FALSE);
+ g_return_val_if_fail (start_offset >= -1, FALSE);
+ if (end_offset == -1)
+ end_offset = et_get_character_count (text);
+
+ if (start_offset != end_offset) {
+ gint real_start, real_end;
+ real_start = MIN (start_offset, end_offset);
+ real_end = MAX (start_offset, end_offset);
+ etext->selection_start = real_start;
+ etext->selection_end = real_end;
+
+ gnome_canvas_item_grab_focus (GNOME_CANVAS_ITEM (etext));
+ gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (etext));
+
+ g_signal_emit_by_name (ATK_OBJECT (text), "text_selection_changed");
+
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+static gboolean
+et_remove_selection (AtkText *text,
+ gint selection_num)
+{
+ GObject *obj;
+ EText *etext;
+
+ g_return_val_if_fail (ATK_IS_GOBJECT_ACCESSIBLE (text), FALSE);
+ obj = atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (text));
+ if (obj == NULL)
+ return FALSE;
+ g_return_val_if_fail (E_IS_TEXT (obj), FALSE);
+ etext = E_TEXT (obj);
+
+ if (selection_num == 0
+ && etext->selection_start != etext->selection_end) {
+ etext->selection_end = etext->selection_start;
+ g_signal_emit_by_name (ATK_OBJECT(text), "text_selection_changed");
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+static gboolean
+et_set_selection (AtkText *text,
+ gint selection_num,
+ gint start_offset,
+ gint end_offset)
+{
+ GObject *obj;
+
+ g_return_val_if_fail (ATK_IS_GOBJECT_ACCESSIBLE (text), FALSE);
+ obj = atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (text));
+ if (obj == NULL)
+ return FALSE;
+ g_return_val_if_fail (E_IS_TEXT (obj), FALSE);
+ if (selection_num == 0)
+ return et_add_selection (text, start_offset, end_offset);
+ return FALSE;
+}
+
+static gboolean
+et_set_caret_offset (AtkText *text,
+ gint offset)
+{
+ GObject *obj;
+ EText *etext;
+
+ g_return_val_if_fail (ATK_IS_GOBJECT_ACCESSIBLE (text), FALSE);
+ obj = atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (text));
+ if (obj == NULL)
+ return FALSE;
+
+ g_return_val_if_fail (E_IS_TEXT (obj), FALSE);
+ etext = E_TEXT (obj);
+
+ if (offset < -1)
+ return FALSE;
+ else {
+ ETextEventProcessorCommand command;
+
+ if (offset == -1)
+ offset = et_get_character_count (text);
+
+ command.action = E_TEP_MOVE;
+ command.position = E_TEP_VALUE;
+ command.value = offset;
+ command.time = GDK_CURRENT_TIME;
+ g_signal_emit_by_name (etext->tep, "command", &command);
+ return TRUE;
+ }
+}
+
+static gboolean
+et_set_run_attributes (AtkEditableText *text,
+ AtkAttributeSet *attrib_set,
+ gint start_offset,
+ gint end_offset)
+{
+ /* Unimplemented */
+ return FALSE;
+}
+
+static void
+et_set_text_contents (AtkEditableText *text,
+ const gchar *string)
+{
+ et_set_full_text (text, string);
+}
+
+static void
+et_insert_text (AtkEditableText *text,
+ const gchar *string,
+ gint length,
+ gint *position)
+{
+ /* Utf8 unimplemented */
+ gchar *result;
+
+ const gchar *full_text = et_get_full_text (ATK_TEXT (text));
+ if (full_text == NULL)
+ return;
+
+ result = g_strdup_printf ("%.*s%.*s%s", *position, full_text, length, string, full_text + *position);
+
+ et_set_full_text (text, result);
+
+ *position += length;
+
+ g_free (result);
+}
+
+static void
+et_copy_text (AtkEditableText *text,
+ gint start_pos,
+ gint end_pos)
+{
+ GObject *obj;
+ EText *etext;
+
+ g_return_if_fail (ATK_IS_GOBJECT_ACCESSIBLE (text));
+ obj = atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (text));
+ if (obj == NULL)
+ return;
+
+ g_return_if_fail (E_IS_TEXT (obj));
+ etext = E_TEXT (obj);
+
+ if (start_pos != end_pos) {
+ etext->selection_start = start_pos;
+ etext->selection_end = end_pos;
+ e_text_copy_clipboard (etext);
+ }
+}
+
+static void
+et_delete_text (AtkEditableText *text,
+ gint start_pos,
+ gint end_pos)
+{
+ GObject *obj;
+ EText *etext;
+
+ g_return_if_fail (ATK_IS_GOBJECT_ACCESSIBLE(text));
+ obj = atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (text));
+ if (obj == NULL)
+ return;
+
+ g_return_if_fail (E_IS_TEXT (obj));
+ etext = E_TEXT (obj);
+
+ etext->selection_start = start_pos;
+ etext->selection_end = end_pos;
+
+ e_text_delete_selection (etext);
+}
+
+static void
+et_cut_text (AtkEditableText *text,
+ gint start_pos,
+ gint end_pos)
+{
+ et_copy_text (text, start_pos, end_pos);
+ et_delete_text (text, start_pos, end_pos);
+}
+
+static void
+et_paste_text (AtkEditableText *text,
+ gint position)
+{
+ GObject *obj;
+ EText *etext;
+
+ g_return_if_fail (ATK_IS_GOBJECT_ACCESSIBLE (text));
+ obj = atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (text));
+ if (obj == NULL)
+ return;
+
+ g_return_if_fail (E_IS_TEXT (obj));
+ etext = E_TEXT (obj);
+
+ g_object_set (etext, "cursor_pos", position, NULL);
+ e_text_paste_clipboard (etext);
+}
+
+static void
+et_atk_component_iface_init (AtkComponentIface *iface)
+{
+ iface->get_extents = et_get_extents;
+}
+
+static void
+et_atk_text_iface_init (AtkTextIface *iface)
+{
+ iface->get_text = et_get_text;
+ iface->get_text_after_offset = et_get_text_after_offset;
+ iface->get_text_at_offset = et_get_text_at_offset;
+ iface->get_character_at_offset = et_get_character_at_offset;
+ iface->get_text_before_offset = et_get_text_before_offset;
+ iface->get_caret_offset = et_get_caret_offset;
+ iface->get_run_attributes = et_get_run_attributes;
+ iface->get_default_attributes = et_get_default_attributes;
+ iface->get_character_extents = et_get_character_extents;
+ iface->get_character_count = et_get_character_count;
+ iface->get_offset_at_point = et_get_offset_at_point;
+ iface->get_n_selections = et_get_n_selections;
+ iface->get_selection = et_get_selection;
+ iface->add_selection = et_add_selection;
+ iface->remove_selection = et_remove_selection;
+ iface->set_selection = et_set_selection;
+ iface->set_caret_offset = et_set_caret_offset;
+}
+
+static void
+et_atk_editable_text_iface_init (AtkEditableTextIface *iface)
+{
+ iface->set_run_attributes = et_set_run_attributes;
+ iface->set_text_contents = et_set_text_contents;
+ iface->insert_text = et_insert_text;
+ iface->copy_text = et_copy_text;
+ iface->cut_text = et_cut_text;
+ iface->delete_text = et_delete_text;
+ iface->paste_text = et_paste_text;
+}
+
+static void
+_et_reposition_cb (ETextModel *model,
+ ETextModelReposFn fn,
+ gpointer repos_data,
+ gpointer user_data)
+{
+ AtkObject *accessible;
+ AtkText *text;
+
+ accessible = ATK_OBJECT (user_data);
+ text = ATK_TEXT (accessible);
+
+ if (fn == e_repos_delete_shift) {
+ EReposDeleteShift *info = (EReposDeleteShift *) repos_data;
+ g_signal_emit_by_name (text, "text-changed::delete", info->pos, info->len);
+ }
+ else if (fn == e_repos_insert_shift) {
+ EReposInsertShift *info = (EReposInsertShift *) repos_data;
+ g_signal_emit_by_name (text, "text-changed::insert", info->pos, info->len);
+ }
+}
+
+static void
+_et_command_cb (ETextEventProcessor *tep,
+ ETextEventProcessorCommand *command,
+ gpointer user_data)
+{
+ AtkObject *accessible;
+ AtkText *text;
+
+ accessible = ATK_OBJECT (user_data);
+ text = ATK_TEXT (accessible);
+
+ switch (command->action) {
+ case E_TEP_MOVE:
+ g_signal_emit_by_name (text, "text-caret-moved", et_get_caret_offset (text));
+ break;
+ case E_TEP_SELECT:
+ g_signal_emit_by_name (text, "text-selection-changed");
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+et_real_initialize (AtkObject *obj,
+ gpointer data)
+{
+ EText *etext;
+
+ ATK_OBJECT_CLASS (parent_class)->initialize (obj, data);
+
+ g_return_if_fail (GAL_A11Y_IS_E_TEXT (obj));
+ g_return_if_fail (E_IS_TEXT (data));
+
+ etext = E_TEXT (data);
+
+ /* Set up signal callbacks */
+ g_signal_connect (etext->model, "reposition",
+ G_CALLBACK (_et_reposition_cb), obj);
+
+ if (etext->tep)
+ g_signal_connect_after (etext->tep, "command",
+ (GCallback) _et_command_cb, obj);
+
+ obj->role = ATK_ROLE_TEXT;
+}
+
+static void
+et_class_init (GalA11yETextClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ AtkObjectClass *atk_class = ATK_OBJECT_CLASS (klass);
+
+ quark_accessible_object = g_quark_from_static_string ("gtk-accessible-object");
+ parent_class = g_type_class_ref (PARENT_TYPE);
+ component_parent_iface = g_type_interface_peek(parent_class, ATK_TYPE_COMPONENT);
+ object_class->dispose = et_dispose;
+ atk_class->initialize = et_real_initialize;
+}
+
+static void
+et_init (GalA11yEText *a11y)
+{
+#if 0
+ GalA11yETextPrivate *priv;
+
+ priv = GET_PRIVATE (a11y);
+#endif
+}
+
+/**
+ * gal_a11y_e_text_get_type:
+ * @void:
+ *
+ * Registers the &GalA11yEText class if necessary, and returns the type ID
+ * associated to it.
+ *
+ * Return value: The type ID of the &GalA11yEText class.
+ **/
+GType
+gal_a11y_e_text_get_type (void)
+{
+ static GType type = 0;
+
+ if (!type) {
+ AtkObjectFactory *factory;
+
+ GTypeInfo info = {
+ sizeof (GalA11yETextClass),
+ (GBaseInitFunc) NULL,
+ (GBaseFinalizeFunc) NULL,
+ (GClassInitFunc) et_class_init,
+ (GClassFinalizeFunc) NULL,
+ NULL, /* class_data */
+ sizeof (GalA11yEText),
+ 0,
+ (GInstanceInitFunc) et_init,
+ NULL /* value_text */
+ };
+
+ static const GInterfaceInfo atk_component_info = {
+ (GInterfaceInitFunc) et_atk_component_iface_init,
+ (GInterfaceFinalizeFunc) NULL,
+ NULL
+ };
+ static const GInterfaceInfo atk_text_info = {
+ (GInterfaceInitFunc) et_atk_text_iface_init,
+ (GInterfaceFinalizeFunc) NULL,
+ NULL
+ };
+ static const GInterfaceInfo atk_editable_text_info = {
+ (GInterfaceInitFunc) et_atk_editable_text_iface_init,
+ (GInterfaceFinalizeFunc) NULL,
+ NULL
+ };
+
+ factory = atk_registry_get_factory (atk_get_default_registry (), GNOME_TYPE_CANVAS_ITEM);
+ parent_type = atk_object_factory_get_accessible_type (factory);
+
+ type = gal_a11y_type_register_static_with_private (PARENT_TYPE, "GalA11yEText", &info, 0,
+ sizeof (GalA11yETextPrivate), &priv_offset);
+
+ g_type_add_interface_static (type, ATK_TYPE_COMPONENT, &atk_component_info);
+ g_type_add_interface_static (type, ATK_TYPE_TEXT, &atk_text_info);
+ g_type_add_interface_static (type, ATK_TYPE_EDITABLE_TEXT, &atk_editable_text_info);
+ }
+
+ return type;
+}
+
+void
+gal_a11y_e_text_init (void)
+{
+ if (atk_get_root ())
+ atk_registry_set_factory_type (atk_get_default_registry (),
+ E_TYPE_TEXT,
+ gal_a11y_e_text_factory_get_type ());
+
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 02:06:55 +0800