| /* |
| * Copyright (C) 2012 Igalia S.L. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "WebPageAccessibilityObject.h" |
| |
| #if HAVE(ACCESSIBILITY) |
| |
| #include "WebPage.h" |
| #include <WebCore/AXObjectCache.h> |
| #include <WebCore/Frame.h> |
| #include <WebCore/Page.h> |
| |
| using namespace WebKit; |
| using namespace WebCore; |
| |
| G_DEFINE_TYPE(WebPageAccessibilityObject, web_page_accessibility_object, ATK_TYPE_PLUG) |
| |
| static AtkObject* accessibilityRootObjectWrapper(AtkObject* atkObject) |
| { |
| if (!AXObjectCache::accessibilityEnabled()) |
| AXObjectCache::enableAccessibility(); |
| |
| WebPageAccessibilityObject* accessible = WEB_PAGE_ACCESSIBILITY_OBJECT(atkObject); |
| if (!accessible->m_page) |
| return 0; |
| |
| Page* corePage = accessible->m_page->corePage(); |
| if (!corePage) |
| return 0; |
| |
| Frame* coreFrame = corePage->mainFrame(); |
| if (!coreFrame || !coreFrame->document()) |
| return 0; |
| |
| AccessibilityObject* coreRootObject = coreFrame->document()->axObjectCache()->rootObject(); |
| if (!coreRootObject) |
| return 0; |
| |
| AtkObject* rootObject = coreRootObject->wrapper(); |
| if (!rootObject || !ATK_IS_OBJECT(rootObject)) |
| return 0; |
| |
| return rootObject; |
| } |
| |
| static void webPageAccessibilityObjectInitialize(AtkObject* atkObject, gpointer data) |
| { |
| if (ATK_OBJECT_CLASS(web_page_accessibility_object_parent_class)->initialize) |
| ATK_OBJECT_CLASS(web_page_accessibility_object_parent_class)->initialize(atkObject, data); |
| |
| WEB_PAGE_ACCESSIBILITY_OBJECT(atkObject)->m_page = reinterpret_cast<WebPage*>(data); |
| atk_object_set_role(atkObject, ATK_ROLE_FILLER); |
| } |
| |
| static gint webPageAccessibilityObjectGetIndexInParent(AtkObject*) |
| { |
| // An AtkPlug is the only child an AtkSocket can have. |
| return 0; |
| } |
| |
| static gint webPageAccessibilityObjectGetNChildren(AtkObject* atkObject) |
| { |
| AtkObject* rootObject = accessibilityRootObjectWrapper(atkObject); |
| if (!rootObject) |
| return 0; |
| |
| return 1; |
| } |
| |
| static AtkObject* webPageAccessibilityObjectRefChild(AtkObject* atkObject, gint index) |
| { |
| // It's supposed to have either one child or zero. |
| if (index && index != 1) |
| return 0; |
| |
| AtkObject* rootObject = accessibilityRootObjectWrapper(atkObject); |
| if (!rootObject) |
| return 0; |
| |
| atk_object_set_parent(rootObject, atkObject); |
| g_object_ref(rootObject); |
| |
| return rootObject; |
| } |
| |
| static void web_page_accessibility_object_init(WebPageAccessibilityObject*) |
| { |
| } |
| |
| static void web_page_accessibility_object_class_init(WebPageAccessibilityObjectClass* klass) |
| { |
| AtkObjectClass* atkObjectClass = ATK_OBJECT_CLASS(klass); |
| |
| // No need to implement get_parent() here since this is a subclass |
| // of AtkPlug and all the logic related to that function will be |
| // implemented by the ATK bridge. |
| atkObjectClass->initialize = webPageAccessibilityObjectInitialize; |
| atkObjectClass->get_index_in_parent = webPageAccessibilityObjectGetIndexInParent; |
| atkObjectClass->get_n_children = webPageAccessibilityObjectGetNChildren; |
| atkObjectClass->ref_child = webPageAccessibilityObjectRefChild; |
| } |
| |
| WebPageAccessibilityObject* webPageAccessibilityObjectNew(WebPage* page) |
| { |
| AtkObject* object = ATK_OBJECT(g_object_new(WEB_TYPE_PAGE_ACCESSIBILITY_OBJECT, NULL)); |
| atk_object_initialize(object, page); |
| return WEB_PAGE_ACCESSIBILITY_OBJECT(object); |
| } |
| |
| void webPageAccessibilityObjectRefresh(WebPageAccessibilityObject* accessible) |
| { |
| // We just need to ensure that there's a connection in the ATK |
| // world between this accessibility object and the AtkObject of |
| // the accessibility object for the root of the DOM tree. |
| AtkObject* rootObject = accessibilityRootObjectWrapper(ATK_OBJECT(accessible)); |
| if (!rootObject) |
| return; |
| atk_object_set_parent(rootObject, ATK_OBJECT(accessible)); |
| } |
| |
| #endif |