add new file for toggle cell a11y object. new a11y object toggle cell

2003-10-26  Yuedong Du  <yuedong.du@sun.com>

        * gal/a11y/e-table/Makefile.am: add new file for toggle cell a11y
         object.
        * gal/a11y/e-table/gal-a11y-e-cell-toggle.c: new a11y object toggle cell        (gal_a11y_e_cell_toggle_get_type),
        (gal_a11y_e_cell_toggle_class_init), (toggle_cell_action), the
        implementation of toggle cell action.
        (gal_a11y_e_cell_toggle_new):
        * gal/a11y/e-table/gal-a11y-e-cell-toggle.h: ditto
        * gal/a11y/e-table/gal-a11y-e-cell.c:
        (_gal_a11y_e_cell_get_action_info),
        (_gal_a11y_e_cell_destroy_action_info),
        (gal_a11y_e_cell_add_action), (gal_a11y_e_cell_remove_action),
        (gal_a11y_e_cell_remove_action_by_name),
        (gal_a11y_e_cell_action_get_n_actions),
        (gal_a11y_e_cell_action_get_name),
        (gal_a11y_e_cell_action_get_description),
        (gal_a11y_e_cell_action_set_description),
        (gal_a11y_e_cell_action_get_keybinding), (idle_do_action),
        (gal_a11y_e_cell_action_do_action),
        (gal_a11y_e_cell_atk_action_interface_init),
        (gal_a11y_e_cell_type_add_action_interface),
        (gal_a11y_e_cell_add_state): helper functions for add a action,
        stealed from gailcell.c
        * gal/a11y/e-table/gal-a11y-e-cell.h:
        * gal/e-table/e-cell-toggle.c: (e_cell_toggle_class_init): register
        toggle's a11y object.

svn path=/trunk/; revision=23095

4 files changed, 427 insertions, 0 deletions

diff --git a/a11y/e-table/gal-a11y-e-cell-toggle.c b/a11y/e-table/gal-a11y-e-cell-toggle.c
new file mode 100644
index 0000000000..2daa7e7271
--- /dev/null
+++ b/a11y/e-table/gal-a11y-e-cell-toggle.c
@@ -0,0 +1,105 @@
+#include <gtk/gtk.h>
+#include "gal-a11y-e-cell-toggle.h"
+#include <gal/e-table/e-cell-toggle.h>
+#include <gal/e-table/e-table-model.h>
+
+static void gal_a11y_e_cell_toggle_class_init (GalA11yECellToggleClass *klass);
+
+GType
+gal_a11y_e_cell_toggle_get_type (void)
+{
+  static GType type = 0;
+
+  if (!type)
+    {
+      static const GTypeInfo tinfo =
+      {
+        sizeof (GalA11yECellToggleClass),
+        (GBaseInitFunc) NULL, /* base init */
+        (GBaseFinalizeFunc) NULL, /* base finalize */
+        (GClassInitFunc) gal_a11y_e_cell_toggle_class_init, /* class init */
+        (GClassFinalizeFunc) NULL, /* class finalize */
+        NULL, /* class data */
+        sizeof (GalA11yECellToggle), /* instance size */
+        0, /* nb preallocs */
+        NULL, /* instance init */
+        NULL /* value table */
+      };
+                                                                                
+
+      type = g_type_register_static (GAL_A11Y_TYPE_E_CELL,
+                                     "GalA11yECellToggle", &tinfo, 0);
+      gal_a11y_e_cell_type_add_action_interface (type);
+	
+    }
+  return type;
+}
+
+
+static void 
+gal_a11y_e_cell_toggle_class_init (GalA11yECellToggleClass *klass)
+{
+}
+
+static void
+toggle_cell_action (GalA11yECell *cell)
+{
+	ECellToggle * ect;
+	gint finished;
+	GdkEventButton event;
+	gint x, y, width, height;
+	gint row, col;
+
+	row = cell->row;
+	col = cell->view_col;
+
+	e_table_item_get_cell_geometry (cell->item, &row, &col,
+					&x, &y, &width, &height);
+	event.x = x ;
+	event.y = y ;
+	event.type = GDK_BUTTON_PRESS;
+	event.window = GTK_LAYOUT(GNOME_CANVAS_ITEM(cell->item)->canvas)->bin_window;
+        event.button = 1;
+        event.send_event = TRUE;
+        event.time = GDK_CURRENT_TIME;
+        event.axes = NULL;
+
+	g_signal_emit_by_name (cell->item, "event", &event, &finished);
+}
+
+AtkObject* 
+gal_a11y_e_cell_toggle_new (ETableItem *item,
+			    ECellView  *cell_view,
+			    AtkObject  *parent,
+			    int         model_col,
+			    int         view_col,
+			    int         row)
+{
+	AtkObject *a11y;
+	GalA11yECell *cell;
+	GalA11yECellToggle *toggle_cell;
+
+	a11y = ATK_OBJECT(g_object_new (GAL_A11Y_TYPE_E_CELL_TOGGLE, NULL));
+
+	g_return_val_if_fail (a11y != NULL, NULL);
+
+	cell = GAL_A11Y_E_CELL(a11y);
+	toggle_cell = GAL_A11Y_E_CELL_TOGGLE(a11y);
+	a11y->role  = ATK_ROLE_TABLE_CELL;
+
+        gal_a11y_e_cell_construct (a11y,
+                                   item,
+                                   cell_view,
+                                   parent,
+                                   model_col,
+                                   view_col,
+                                   row);
+
+	gal_a11y_e_cell_add_action (cell, 
+				    "toggle",	       /* action name*/
+				    "toggle the cell", /* action description */
+				    NULL,              /* action keybinding */
+				    toggle_cell_action);
+
+	return a11y;
+}
diff --git a/a11y/e-table/gal-a11y-e-cell-toggle.h b/a11y/e-table/gal-a11y-e-cell-toggle.h
new file mode 100644
index 0000000000..9a740d7d84
--- /dev/null
+++ b/a11y/e-table/gal-a11y-e-cell-toggle.h
@@ -0,0 +1,47 @@
+#ifndef __GAL_A11Y_E_CELL_TOGGLE_H__
+#define __GAL_A11Y_E_CELL_TOGGLE_H__
+
+#include <atk/atk.h>
+#include "gal-a11y-e-cell.h"
+#include "gal-a11y-e-cell-toggle.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+#define GAL_A11Y_TYPE_E_CELL_TOGGLE            (gal_a11y_e_cell_toggle_get_type ())
+#define GAL_A11Y_E_CELL_TOGGLE(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GAL_A11Y_TYPE_E_CELL_TOGGLE, GalA11yECellToggle))
+#define GAL_A11Y_E_CELL_TOGGLE_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GAL_A11Y_E_CELL_TOGGLE, GalA11yECellToggleClass))
+#define GAL_A11Y_IS_E_CELL_TOGGLE(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GAL_A11Y_TYPE_E_CELL_TOGGLE))
+#define GAL_A11Y_IS_E_CELL_TOGGLE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GAL_A11Y_TYPE_E_CELL_TOGGLE))
+#define GAL_A11Y_E_CELL_TOGGLE_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GAL_A11Y_TYPE_E_CELL_TOGGLE, GalA11yECellToggleClass))
+
+typedef struct _GalA11yECellToggle                  GalA11yECellToggle;
+typedef struct _GalA11yECellToggleClass             GalA11yECellToggleClass;
+
+struct _GalA11yECellToggle
+{
+  GalA11yECell parent;
+  gboolean cell_value;
+};
+
+GType gal_a11y_e_cell_toggle_get_type (void);
+
+struct _GalA11yECellToggleClass
+{
+  GalA11yECellClass parent_class;
+};
+
+AtkObject *gal_a11y_e_cell_toggle_new  (ETableItem *item,
+                                        ECellView  *cell_view,
+                                        AtkObject  *parent,
+                                        int         model_col,
+                                        int         view_col,
+                                        int         row);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+
+#endif /* __GAL_A11Y_E_CELL_TOGGLE_H__ */
diff --git a/a11y/e-table/gal-a11y-e-cell.c b/a11y/e-table/gal-a11y-e-cell.c
index a4ad363533..db4135bf1d 100644
--- a/a11y/e-table/gal-a11y-e-cell.c
+++ b/a11y/e-table/gal-a11y-e-cell.c
@@ -11,6 +11,7 @@
 #include "gal-a11y-util.h"
 #include <atk/atkobject.h>
 #include <atk/atkcomponent.h>
+#include <atk/atkaction.h>
 
 #define CS_CLASS(a11y) (G_TYPE_INSTANCE_GET_CLASS ((a11y), C_TYPE_STREAM, GalA11yECellClass))
 static GObjectClass *parent_class;
@@ -144,6 +145,250 @@ eti_init (GalA11yECell *a11y)
 	a11y->row = -1;
 }
 
+
+static ActionInfo *
+_gal_a11y_e_cell_get_action_info (GalA11yECell *cell,
+                            gint     index)
+{
+	GList *list_node;
+                                                                                
+	g_return_val_if_fail (GAL_A11Y_IS_E_CELL (cell), NULL);
+	if (cell->action_list == NULL)
+		return NULL;
+	list_node = g_list_nth (cell->action_list, index);
+	if (!list_node)
+		return NULL;
+	return (ActionInfo *) (list_node->data);
+}
+
+static void
+_gal_a11y_e_cell_destroy_action_info (gpointer action_info,
+				      gpointer user_data)
+{
+	ActionInfo *info = (ActionInfo *)action_info;
+
+	g_return_if_fail (info != NULL);
+	g_free (info->name);
+	g_free (info->description);
+	g_free (info->keybinding);
+	g_free (info);
+}
+
+
+gboolean
+gal_a11y_e_cell_add_action ( GalA11yECell * cell,
+			     const gchar *action_name,
+			     const gchar *action_description,
+			     const gchar *action_keybinding,
+			     ACTION_FUNC action_func)
+{
+	ActionInfo *info;
+	g_return_val_if_fail (GAL_A11Y_IS_E_CELL (cell), FALSE);
+	info = g_new (ActionInfo, 1);
+                                                                              
+	if (action_name != NULL)
+		info->name = g_strdup (action_name);
+	else
+		info->name = NULL;
+
+	if (action_description != NULL)
+		info->description = g_strdup (action_description);
+	else
+		info->description = NULL;
+	if (action_keybinding != NULL)
+		info->keybinding = g_strdup (action_keybinding);
+	else
+		info->keybinding = NULL;
+	info->do_action_func = action_func;
+
+	cell->action_list = g_list_append (cell->action_list, (gpointer) info);
+	return TRUE;
+}
+
+gboolean
+gal_a11y_e_cell_remove_action (GalA11yECell *cell,
+			       gint     action_index)
+{
+	GList *list_node;
+
+	g_return_val_if_fail (GAL_A11Y_IS_E_CELL (cell), FALSE);
+	list_node = g_list_nth (cell->action_list, action_index);
+	if (!list_node)
+		return FALSE;
+	g_return_val_if_fail (list_node->data != NULL, FALSE);
+	_gal_a11y_e_cell_destroy_action_info (list_node->data, NULL);
+	cell->action_list = g_list_remove_link (cell->action_list, list_node);
+
+	return TRUE;
+}
+
+gboolean
+gal_a11y_e_cell_remove_action_by_name (GalA11yECell *cell,
+				       const gchar *action_name)
+{
+	GList *list_node;
+	gboolean action_found= FALSE;
+                                                                               
+	g_return_val_if_fail (GAL_A11Y_IS_E_CELL (cell), FALSE);
+	for (list_node = cell->action_list; list_node && !action_found;
+          	          list_node = list_node->next) {
+		if (!g_strcasecmp (((ActionInfo *)(list_node->data))->name, action_name)) {
+			action_found = TRUE;
+			break;
+		}
+	}
+
+	g_return_val_if_fail (action_found, FALSE);
+	_gal_a11y_e_cell_destroy_action_info (list_node->data, NULL);
+	cell->action_list = g_list_remove_link (cell->action_list, list_node);
+
+	return TRUE;
+}
+
+static gint
+gal_a11y_e_cell_action_get_n_actions (AtkAction *action)
+{
+	GalA11yECell *cell = GAL_A11Y_E_CELL(action);
+	if (cell->action_list != NULL)
+		return g_list_length (cell->action_list);
+	else
+		return 0;
+}
+
+static G_CONST_RETURN gchar *
+gal_a11y_e_cell_action_get_name (AtkAction *action,
+                           gint      index)
+{
+	GalA11yECell *cell = GAL_A11Y_E_CELL(action);
+	ActionInfo *info = _gal_a11y_e_cell_get_action_info (cell, index);
+                                                                                
+	if (info == NULL)
+		return NULL;
+	return info->name;
+}
+
+static G_CONST_RETURN gchar *
+gal_a11y_e_cell_action_get_description (AtkAction *action,
+					gint      index)
+{
+	GalA11yECell *cell = GAL_A11Y_E_CELL(action);
+	ActionInfo *info = _gal_a11y_e_cell_get_action_info (cell, index);
+
+	if (info == NULL)
+		return NULL;
+	return info->description;
+}
+
+static gboolean
+gal_a11y_e_cell_action_set_description (AtkAction   *action,
+					gint        index,
+					const gchar *desc)
+{
+	GalA11yECell *cell = GAL_A11Y_E_CELL(action);
+	ActionInfo *info = _gal_a11y_e_cell_get_action_info (cell, index);
+                                                                                
+	if (info == NULL)
+		return FALSE;
+	g_free (info->description);
+	info->description = g_strdup (desc);
+	return TRUE;
+}
+
+static G_CONST_RETURN gchar *
+gal_a11y_e_cell_action_get_keybinding (AtkAction *action,
+				       gint      index)
+{
+	GalA11yECell *cell = GAL_A11Y_E_CELL(action);
+	ActionInfo *info = _gal_a11y_e_cell_get_action_info (cell, index);
+	if (info == NULL)
+		return NULL;
+
+	return info->keybinding;
+}
+                                                                                
+static gboolean
+idle_do_action (gpointer data)
+{
+	GalA11yECell *cell;
+
+	cell = GAL_A11Y_E_CELL (data);
+	cell->action_idle_handler = 0;
+	cell->action_func (cell);
+                                                                                
+	return FALSE;
+}
+
+static gboolean
+gal_a11y_e_cell_action_do_action (AtkAction *action,
+				  gint      index)
+{
+	GalA11yECell *cell = GAL_A11Y_E_CELL(action);
+	ActionInfo *info = _gal_a11y_e_cell_get_action_info (cell, index);
+
+	if (info == NULL)
+		return FALSE;
+	g_return_val_if_fail (info->do_action_func, FALSE);
+	if (cell->action_idle_handler)
+		return FALSE;
+	cell->action_func = info->do_action_func;
+	cell->action_idle_handler = g_idle_add (idle_do_action, cell);
+
+	return TRUE;
+}
+
+static void
+gal_a11y_e_cell_atk_action_interface_init (AtkActionIface *iface)
+{
+  g_return_if_fail (iface != NULL);
+                                                                                
+  iface->get_n_actions = gal_a11y_e_cell_action_get_n_actions;
+  iface->do_action = gal_a11y_e_cell_action_do_action;
+  iface->get_name = gal_a11y_e_cell_action_get_name;
+  iface->get_description = gal_a11y_e_cell_action_get_description;
+  iface->set_description = gal_a11y_e_cell_action_set_description;
+  iface->get_keybinding = gal_a11y_e_cell_action_get_keybinding;
+}
+
+void
+gal_a11y_e_cell_type_add_action_interface (GType type)
+{
+	static const GInterfaceInfo atk_action_info =
+	{
+	(GInterfaceInitFunc) gal_a11y_e_cell_atk_action_interface_init,
+	(GInterfaceFinalizeFunc) NULL,
+	NULL
+	};
+
+	g_type_add_interface_static (type, ATK_TYPE_ACTION,
+				     &atk_action_info);
+}
+
+gboolean
+gal_a11y_e_cell_add_state (GalA11yECell     *cell,
+			   AtkStateType state_type,
+			   gboolean     emit_signal)
+{
+	if (!atk_state_set_contains_state (cell->state_set, state_type)) {
+		gboolean rc;
+                                                                                
+		rc = atk_state_set_add_state (cell->state_set, state_type);
+		/*
+		 * The signal should only be generated if the value changed,
+		 * not when the cell is set up.  So states that are set
+		 * initially should pass FALSE as the emit_signal argument.
+		 */
+                                                                                
+		if (emit_signal) {
+			atk_object_notify_state_change (ATK_OBJECT (cell), state_type, TRUE);
+			/* If state_type is ATK_STATE_VISIBLE, additional 
+			   notification */
+			if (state_type == ATK_STATE_VISIBLE)
+				g_signal_emit_by_name (cell, "visible_data_changed");
+		}
+	}
+}
+
+
 /**
  * gal_a11y_e_cell_get_type:
  * @void: 
diff --git a/a11y/e-table/gal-a11y-e-cell.h b/a11y/e-table/gal-a11y-e-cell.h
index ff9e5162d8..81f5f147ca 100644
--- a/a11y/e-table/gal-a11y-e-cell.h
+++ b/a11y/e-table/gal-a11y-e-cell.h
@@ -22,6 +22,9 @@
 typedef struct _GalA11yECell GalA11yECell;
 typedef struct _GalA11yECellClass GalA11yECellClass;
 typedef struct _GalA11yECellPrivate GalA11yECellPrivate;
+typedef struct _ActionInfo ActionInfo;
+typedef void (*ACTION_FUNC) (GalA11yECell *cell);
+
 
 /* This struct should actually be larger as this isn't what we derive from.
  * The GalA11yECellPrivate comes right after the parent class structure.
@@ -35,12 +38,24 @@ struct _GalA11yECell {
 	int         model_col;
 	int         view_col;
 	int         row;
+	AtkStateSet *state_set;
+	GList       *action_list;
+	gint         action_idle_handler;
+	ACTION_FUNC  action_func;
 };
 
 struct _GalA11yECellClass {
 	AtkObjectClass parent_class;
 };
 
+struct _ActionInfo {
+	gchar *name;
+	gchar *description;
+	gchar *keybinding;
+	ACTION_FUNC do_action_func;
+};
+
+
 
 /* Standard Glib function */
 GType      gal_a11y_e_cell_get_type   (void);
@@ -58,4 +73,19 @@ void       gal_a11y_e_cell_construct  (AtkObject  *object,
 				       int         view_col,
 				       int         row);
 
+void	gal_a11y_e_cell_type_add_action_interface (GType type);
+                                                                                
+gboolean gal_a11y_e_cell_add_action	(GalA11yECell	*cell,
+				         const gchar     *action_name,
+					 const gchar     *action_description,
+					 const gchar     *action_keybinding,
+					 ACTION_FUNC     action_func);
+                                                                                
+gboolean gal_a11y_e_cell_remove_action	(GalA11yECell	*cell,
+                                         gint           action_id);
+                                                                                
+gboolean gal_a11y_e_cell_remove_action_by_name (GalA11yECell        *cell,
+                                          	const gchar     *action_name);
+
+
 #endif /* ! __GAL_A11Y_E_CELL_H__ */