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gecko/accessible/src/atk/nsDocAccessibleWrap.cpp

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:expandtab:shiftwidth=4:tabstop=4:
*/
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Sun Microsystems, Inc.
* Portions created by the Initial Developer are Copyright (C) 2002
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Bolian Yin (bolian.yin@sun.com)
* John Sun (john.sun@sun.com)
* Ginn Chen (ginn.chen@sun.com)
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsMai.h"
#include "nsAutoPtr.h"
#include "nsRootAccessible.h"
#include "nsDocAccessibleWrap.h"
#include "nsAccessibleEventData.h"
#include "nsIAccessibleValue.h"
#include <atk/atk.h>
#include <glib.h>
#include <glib-object.h>
#include "nsStateMap.h"
//----- nsDocAccessibleWrap -----
/*
* Must keep sychronization with enumerate AtkProperty in
* accessible/src/base/nsAccessibleEventData.h
*/
static char * sAtkPropertyNameArray[PROP_LAST] = {
0,
"accessible-name",
"accessible-description",
"accessible-parent",
"accessible-role",
"accessible-layer",
"accessible-mdi-zorder",
"accessible-table-caption",
"accessible-table-column-description",
"accessible-table-column-header",
"accessible-table-row-description",
"accessible-table-row-header",
"accessible-table-summary"
};
nsDocAccessibleWrap::nsDocAccessibleWrap(nsIDOMNode *aDOMNode,
nsIWeakReference *aShell):
nsDocAccessible(aDOMNode, aShell), mActivated(PR_FALSE)
{
}
nsDocAccessibleWrap::~nsDocAccessibleWrap()
{
}
NS_IMETHODIMP nsDocAccessibleWrap::FireToolkitEvent(PRUint32 aEvent,
nsIAccessible* aAccessible,
void* aEventData)
{
NS_ENSURE_ARG_POINTER(aAccessible);
// First fire nsIObserver event for internal xpcom accessibility clients
nsDocAccessible::FireToolkitEvent(aEvent, aAccessible, aEventData);
nsresult rv = NS_ERROR_FAILURE;
nsAccessibleWrap *accWrap =
NS_STATIC_CAST(nsAccessibleWrap *, aAccessible);
MAI_LOG_DEBUG(("\n\nReceived event: aEvent=%u, obj=0x%x, data=0x%x \n",
aEvent, aAccessible, aEventData));
// We don't create ATK objects for nsIAccessible plain text leaves,
// just return NS_OK in such case
AtkObject *atkObj = accWrap->GetAtkObject();
if (!atkObj) {
return NS_OK;
}
nsAccessibleWrap *oldAccWrap = nsnull, *newAccWrap = nsnull;
AtkTableChange * pAtkTableChange = nsnull;
switch (aEvent) {
case nsIAccessibleEvent::EVENT_FOCUS:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_FOCUS\n"));
nsRefPtr<nsRootAccessible> rootAccWrap = accWrap->GetRootAccessible();
if (rootAccWrap && rootAccWrap->mActivated) {
atk_focus_tracker_notify(atkObj);
}
rv = NS_OK;
} break;
case nsIAccessibleEvent::EVENT_VALUE_CHANGE :
{
nsCOMPtr<nsIAccessibleValue> value(do_QueryInterface(aAccessible));
if (value) { // Make sure this is a numeric value
// Don't fire for MSAA string value changes (e.g. text editing)
// ATK values are always numeric
g_object_notify( (GObject*)atkObj, "accessible-value" );
}
}
break;
/*
* Need handle each type of property change separately.
*/
case nsIAccessibleEvent::EVENT_PROPERTY_CHANGED :
{
AtkPropertyChange *pAtkPropChange;
AtkPropertyValues values = { NULL };
MAI_LOG_DEBUG(("\n\nReceived: EVENT_PROPERTY_CHANGED\n"));
NS_ASSERTION(aEventData, "Event needs event data");
if (!aEventData)
break;
pAtkPropChange = NS_REINTERPRET_CAST(AtkPropertyChange *, aEventData);
values.property_name = sAtkPropertyNameArray[pAtkPropChange->type];
MAI_LOG_DEBUG(("\n\nthe type of EVENT_PROPERTY_CHANGED: %d\n\n",
pAtkPropChange->type));
switch (pAtkPropChange->type) {
case PROP_TABLE_CAPTION:
case PROP_TABLE_SUMMARY:
if (pAtkPropChange->oldvalue)
oldAccWrap = NS_REINTERPRET_CAST(nsAccessibleWrap *,
pAtkPropChange->oldvalue);
if (pAtkPropChange->newvalue)
newAccWrap = NS_REINTERPRET_CAST(nsAccessibleWrap *,
pAtkPropChange->newvalue);
if (oldAccWrap && newAccWrap) {
g_value_init(&values.old_value, G_TYPE_POINTER);
g_value_set_pointer(&values.old_value,
oldAccWrap->GetAtkObject());
g_value_init(&values.new_value, G_TYPE_POINTER);
g_value_set_pointer(&values.new_value,
newAccWrap->GetAtkObject());
rv = NS_OK;
}
break;
case PROP_TABLE_COLUMN_DESCRIPTION:
case PROP_TABLE_COLUMN_HEADER:
case PROP_TABLE_ROW_HEADER:
case PROP_TABLE_ROW_DESCRIPTION:
g_value_init(&values.new_value, G_TYPE_INT);
g_value_set_int(&values.new_value,
*NS_REINTERPRET_CAST(gint *,
pAtkPropChange->newvalue));
rv = NS_OK;
break;
//Perhaps need more cases in the future
default:
g_value_init (&values.old_value, G_TYPE_POINTER);
g_value_set_pointer (&values.old_value, pAtkPropChange->oldvalue);
g_value_init (&values.new_value, G_TYPE_POINTER);
g_value_set_pointer (&values.new_value, pAtkPropChange->newvalue);
rv = NS_OK;
}
if (NS_SUCCEEDED(rv)) {
char *signal_name = g_strconcat("property_change::",
values.property_name, NULL);
g_signal_emit_by_name(atkObj, signal_name, &values, NULL);
g_free (signal_name);
}
}
break;
case nsIAccessibleEvent::EVENT_SELECTION_CHANGED:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_SELECTION_CHANGED\n"));
g_signal_emit_by_name(atkObj, "selection_changed");
rv = NS_OK;
break;
case nsIAccessibleEvent::EVENT_TEXT_CHANGED:
AtkTextChange *pAtkTextChange;
MAI_LOG_DEBUG(("\n\nReceived: EVENT_TEXT_CHANGED\n"));
NS_ASSERTION(aEventData, "Event needs event data");
if (!aEventData)
break;
pAtkTextChange = NS_REINTERPRET_CAST(AtkTextChange *, aEventData);
g_signal_emit_by_name (atkObj,
pAtkTextChange->add ? \
"text_changed::insert":"text_changed::delete",
pAtkTextChange->start,
pAtkTextChange->length);
rv = NS_OK;
break;
case nsIAccessibleEvent::EVENT_TEXT_SELECTION_CHANGED:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_TEXT_SELECTION_CHANGED\n"));
g_signal_emit_by_name(atkObj, "text_selection_changed");
rv = NS_OK;
break;
case nsIAccessibleEvent::EVENT_TEXT_CARET_MOVED:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_TEXT_CARET_MOVED\n"));
NS_ASSERTION(aEventData, "Event needs event data");
if (!aEventData)
break;
MAI_LOG_DEBUG(("\n\nCaret postion: %d", *(gint *)aEventData ));
g_signal_emit_by_name(atkObj,
"text_caret_moved",
// Curent caret position
*(gint *)aEventData);
rv = NS_OK;
break;
case nsIAccessibleEvent::EVENT_TABLE_MODEL_CHANGED:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_TABLE_MODEL_CHANGED\n"));
g_signal_emit_by_name(atkObj, "model_changed");
rv = NS_OK;
break;
case nsIAccessibleEvent::EVENT_TABLE_ROW_INSERT:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_TABLE_ROW_INSERT\n"));
NS_ASSERTION(aEventData, "Event needs event data");
if (!aEventData)
break;
pAtkTableChange = NS_REINTERPRET_CAST(AtkTableChange *, aEventData);
g_signal_emit_by_name(atkObj,
"row_inserted",
// After which the rows are inserted
pAtkTableChange->index,
// The number of the inserted
pAtkTableChange->count);
rv = NS_OK;
break;
case nsIAccessibleEvent::EVENT_TABLE_ROW_DELETE:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_TABLE_ROW_DELETE\n"));
NS_ASSERTION(aEventData, "Event needs event data");
if (!aEventData)
break;
pAtkTableChange = NS_REINTERPRET_CAST(AtkTableChange *, aEventData);
g_signal_emit_by_name(atkObj,
"row_deleted",
// After which the rows are deleted
pAtkTableChange->index,
// The number of the deleted
pAtkTableChange->count);
rv = NS_OK;
break;
case nsIAccessibleEvent::EVENT_TABLE_ROW_REORDER:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_TABLE_ROW_REORDER\n"));
g_signal_emit_by_name(atkObj, "row_reordered");
rv = NS_OK;
break;
case nsIAccessibleEvent::EVENT_TABLE_COLUMN_INSERT:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_TABLE_COLUMN_INSERT\n"));
NS_ASSERTION(aEventData, "Event needs event data");
if (!aEventData)
break;
pAtkTableChange = NS_REINTERPRET_CAST(AtkTableChange *, aEventData);
g_signal_emit_by_name(atkObj,
"column_inserted",
// After which the columns are inserted
pAtkTableChange->index,
// The number of the inserted
pAtkTableChange->count);
rv = NS_OK;
break;
case nsIAccessibleEvent::EVENT_TABLE_COLUMN_DELETE:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_TABLE_COLUMN_DELETE\n"));
NS_ASSERTION(aEventData, "Event needs event data");
if (!aEventData)
break;
pAtkTableChange = NS_REINTERPRET_CAST(AtkTableChange *, aEventData);
g_signal_emit_by_name(atkObj,
"column_deleted",
// After which the columns are deleted
pAtkTableChange->index,
// The number of the deleted
pAtkTableChange->count);
rv = NS_OK;
break;
case nsIAccessibleEvent::EVENT_TABLE_COLUMN_REORDER:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_TABLE_COLUMN_REORDER\n"));
g_signal_emit_by_name(atkObj, "column_reordered");
rv = NS_OK;
break;
case nsIAccessibleEvent::EVENT_SECTION_CHANGED:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_SECTION_CHANGED\n"));
g_signal_emit_by_name(atkObj, "visible_data_changed");
rv = NS_OK;
break;
case nsIAccessibleEvent::EVENT_HYPERTEXT_LINK_SELECTED:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_HYPERTEXT_LINK_SELECTED\n"));
atk_focus_tracker_notify(atkObj);
g_signal_emit_by_name(atkObj,
"link_selected",
// Selected link index
*(gint *)aEventData);
rv = NS_OK;
break;
// Is a superclass of ATK event children_changed
case nsIAccessibleEvent::EVENT_REORDER:
AtkChildrenChange *pAtkChildrenChange;
MAI_LOG_DEBUG(("\n\nReceived: EVENT_REORDER(children_change)\n"));
pAtkChildrenChange = NS_REINTERPRET_CAST(AtkChildrenChange *,
aEventData);
nsAccessibleWrap *childAccWrap;
if (pAtkChildrenChange && pAtkChildrenChange->child) {
childAccWrap = NS_STATIC_CAST(nsAccessibleWrap *,
pAtkChildrenChange->child);
g_signal_emit_by_name (atkObj,
pAtkChildrenChange->add ? \
"children_changed::add" : \
"children_changed::remove",
pAtkChildrenChange->index,
childAccWrap->GetAtkObject(),
NULL);
}
else {
//
// EVENT_REORDER is normally fired by "HTML Document".
//
// In GOK, [only] "children_changed::add" can cause foreground
// window accessible to update it children, which will
// refresh "UI-Grab" window.
//
g_signal_emit_by_name (atkObj,
"children_changed::add",
-1, NULL, NULL);
}
rv = NS_OK;
break;
/*
* Because dealing with menu is very different between nsIAccessible
* and ATK, and the menu activity is important, specially transfer the
* following two event.
* Need more verification by AT test.
*/
case nsIAccessibleEvent::EVENT_MENU_START:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_MENU_START\n"));
rv = NS_OK;
break;
case nsIAccessibleEvent::EVENT_MENU_END:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_MENU_END\n"));
rv = NS_OK;
break;
case nsIAccessibleEvent::EVENT_WINDOW_ACTIVATE:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_WINDOW_ACTIVATED\n"));
nsDocAccessibleWrap *accDocWrap =
NS_STATIC_CAST(nsDocAccessibleWrap *, aAccessible);
accDocWrap->mActivated = PR_TRUE;
guint id = g_signal_lookup ("activate", MAI_TYPE_ATK_OBJECT);
g_signal_emit(atkObj, id, 0);
rv = NS_OK;
} break;
case nsIAccessibleEvent::EVENT_WINDOW_DEACTIVATE:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_WINDOW_DEACTIVATED\n"));
nsDocAccessibleWrap *accDocWrap =
NS_STATIC_CAST(nsDocAccessibleWrap *, aAccessible);
accDocWrap->mActivated = PR_FALSE;
guint id = g_signal_lookup ("deactivate", MAI_TYPE_ATK_OBJECT);
g_signal_emit(atkObj, id, 0);
rv = NS_OK;
} break;
case nsIAccessibleEvent::EVENT_DOCUMENT_LOAD_COMPLETE:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_DOCUMENT_LOAD_COMPLETE\n"));
g_signal_emit_by_name (atkObj, "load_complete");
rv = NS_OK;
} break;
case nsIAccessibleEvent::EVENT_DOCUMENT_RELOAD:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_DOCUMENT_RELOAD\n"));
g_signal_emit_by_name (atkObj, "reload");
rv = NS_OK;
} break;
case nsIAccessibleEvent::EVENT_DOCUMENT_LOAD_STOPPED:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_DOCUMENT_LOAD_STOPPED\n"));
g_signal_emit_by_name (atkObj, "load_stopped");
rv = NS_OK;
} break;
case nsIAccessibleEvent::EVENT_DOCUMENT_ATTRIBUTES_CHANGED:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_DOCUMENT_ATTRIBUTES_CHANGED\n"));
g_signal_emit_by_name (atkObj, "attributes_changed");
rv = NS_OK;
} break;
case nsIAccessibleEvent::EVENT_SHOW:
case nsIAccessibleEvent::EVENT_MENUPOPUP_START:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_SHOW\n"));
atk_object_notify_state_change(atkObj, ATK_STATE_VISIBLE, PR_TRUE);
atk_object_notify_state_change(atkObj, ATK_STATE_SHOWING, PR_TRUE);
rv = NS_OK;
break;
case nsIAccessibleEvent::EVENT_HIDE:
case nsIAccessibleEvent::EVENT_MENUPOPUP_END:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_HIDE\n"));
atk_object_notify_state_change(atkObj, ATK_STATE_VISIBLE, PR_FALSE);
atk_object_notify_state_change(atkObj, ATK_STATE_SHOWING, PR_FALSE);
rv = NS_OK;
break;
default:
// Don't transfer others
MAI_LOG_DEBUG(("\n\nReceived an unknown event=0x%u\n", aEvent));
break;
}
return rv;
}
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