src/content/browser/accessibility/browser_accessibility_manager_gtk.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/browser/accessibility/browser_accessibility_manager_gtk.h"
   6
   7 #include "content/browser/accessibility/browser_accessibility_gtk.h"
   8 #include "content/common/accessibility_messages.h"
   9
  10 namespace content {
  11
  12 // static
  13 BrowserAccessibilityManager* BrowserAccessibilityManager::Create(
  14      const ui::AXNodeData& src,
  15     BrowserAccessibilityDelegate* delegate,
  16     BrowserAccessibilityFactory* factory) {
  17   return new BrowserAccessibilityManagerGtk(
  18       NULL,
  19       src,
  20       delegate,
  21       factory);
  22 }
  23
  24 BrowserAccessibilityManagerGtk::BrowserAccessibilityManagerGtk(
  25     GtkWidget* parent_widget,
  26     const ui::AXNodeData& src,
  27     BrowserAccessibilityDelegate* delegate,
  28     BrowserAccessibilityFactory* factory)
  29     : BrowserAccessibilityManager(delegate, factory),
  30       parent_widget_(parent_widget) {
  31   Initialize(src);
  32 }
  33
  34 BrowserAccessibilityManagerGtk::~BrowserAccessibilityManagerGtk() {
  35 }
  36
  37 // static
  38 ui::AXNodeData BrowserAccessibilityManagerGtk::GetEmptyDocument() {
  39   ui::AXNodeData empty_document;
  40   empty_document.id = 0;
  41   empty_document.role = ui::AX_ROLE_ROOT_WEB_AREA;
  42   empty_document.state =
  43       1 << ui::AX_STATE_READ_ONLY;
  44   return empty_document;
  45 }
  46
  47 void BrowserAccessibilityManagerGtk::NotifyAccessibilityEvent(
  48     ui::AXEvent event_type,
  49     BrowserAccessibility* node) {
  50   if (!node->IsNative())
  51     return;
  52   AtkObject* atk_object = node->ToBrowserAccessibilityGtk()->GetAtkObject();
  53
  54   switch (event_type) {
  55     case ui::AX_EVENT_CHILDREN_CHANGED:
  56       RecursivelySendChildrenChanged(GetRoot()->ToBrowserAccessibilityGtk());
  57       break;
  58     case ui::AX_EVENT_FOCUS:
  59       // Note: the focus-event was deprecated in ATK 2.9.4
  60       // See https://bugzilla.gnome.org/show_bug.cgi?id=649575#c8
  61       g_signal_emit_by_name(atk_object, "focus-event", true);
  62       break;
  63     default:
  64       break;
  65   }
  66 }
  67
  68 void BrowserAccessibilityManagerGtk::RecursivelySendChildrenChanged(
  69     BrowserAccessibilityGtk* node) {
  70   AtkObject* atkObject = node->ToBrowserAccessibilityGtk()->GetAtkObject();
  71   for (unsigned int i = 0; i < node->children().size(); ++i) {
  72     BrowserAccessibilityGtk* child =
  73         node->children()[i]->ToBrowserAccessibilityGtk();
  74     g_signal_emit_by_name(atkObject,
  75                           "children-changed::add",
  76                           i,
  77                           child->GetAtkObject());
  78     RecursivelySendChildrenChanged(child);
  79   }
  80 }
  81
  82 }  // namespace content