content/browser/accessibility/browser_accessibility_mac.mm

   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 #import <Cocoa/Cocoa.h>
   6
   7 #import "content/browser/accessibility/browser_accessibility_mac.h"
   8
   9 #import "content/browser/accessibility/browser_accessibility_cocoa.h"
  10 #import "content/browser/accessibility/browser_accessibility_delegate_mac.h"
  11 #include "content/browser/accessibility/browser_accessibility_manager_mac.h"
  12
  13 namespace content {
  14
  15 // Static.
  16 BrowserAccessibility* BrowserAccessibility::Create() {
  17   return new BrowserAccessibilityMac();
  18 }
  19
  20 BrowserAccessibilityMac::BrowserAccessibilityMac()
  21     : browser_accessibility_cocoa_(NULL) {
  22 }
  23
  24 void BrowserAccessibilityMac::PreInitialize() {
  25   BrowserAccessibility::PreInitialize();
  26
  27   if (browser_accessibility_cocoa_)
  28     return;
  29
  30   // We take ownership of the cocoa obj here.
  31   BrowserAccessibilityManagerMac* manager =
  32       static_cast<BrowserAccessibilityManagerMac*>(manager_);
  33   browser_accessibility_cocoa_ = [[BrowserAccessibilityCocoa alloc]
  34       initWithObject:this
  35       delegate:
  36           (id<BrowserAccessibilityDelegateCocoa>)manager->parent_view()];
  37 }
  38
  39 void BrowserAccessibilityMac::NativeReleaseReference() {
  40   // Detach this object from |browser_accessibility_cocoa_| so it
  41   // no longer has a pointer to this object.
  42   [browser_accessibility_cocoa_ detach];
  43   // Now, release it - but at this point, other processes may have a
  44   // reference to the cocoa object.
  45   [browser_accessibility_cocoa_ release];
  46   // Finally, it's safe to delete this since we've detached.
  47   delete this;
  48 }
  49
  50 bool BrowserAccessibilityMac::IsNative() const {
  51   return true;
  52 }
  53
  54 void BrowserAccessibilityMac::DetachTree(
  55     std::vector<BrowserAccessibility*>* nodes) {
  56   [browser_accessibility_cocoa_ childrenChanged];
  57   BrowserAccessibility::DetachTree(nodes);
  58 }
  59
  60 void BrowserAccessibilityMac::SwapChildren(
  61     std::vector<BrowserAccessibility*>& children) {
  62   [browser_accessibility_cocoa_ childrenChanged];
  63   BrowserAccessibility::SwapChildren(children);
  64 }
  65
  66 BrowserAccessibilityCocoa* BrowserAccessibility::ToBrowserAccessibilityCocoa() {
  67   return static_cast<BrowserAccessibilityMac*>(this)->
  68       native_view();
  69 }
  70
  71 }  // namespace content