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 #include "content/browser/accessibility/browser_accessibility_manager_mac.h" 11 12 namespace content { 13 14 // Static. 15 BrowserAccessibility* BrowserAccessibility::Create() { 16 return new BrowserAccessibilityMac(); 17 } 18 19 BrowserAccessibilityMac::BrowserAccessibilityMac() 20 : browser_accessibility_cocoa_(NULL) { 21 } 22 23 void BrowserAccessibilityMac::OnDataChanged() { 24 BrowserAccessibility::OnDataChanged(); 25 26 if (browser_accessibility_cocoa_) { 27 [browser_accessibility_cocoa_ childrenChanged]; 28 return; 29 } 30 31 // We take ownership of the cocoa obj here. 32 browser_accessibility_cocoa_ = [[BrowserAccessibilityCocoa alloc] 33 initWithObject:this]; 34 } 35 36 void BrowserAccessibilityMac::NativeReleaseReference() { 37 // Detach this object from |browser_accessibility_cocoa_| so it 38 // no longer has a pointer to this object. 39 [browser_accessibility_cocoa_ detach]; 40 // Now, release it - but at this point, other processes may have a 41 // reference to the cocoa object. 42 [browser_accessibility_cocoa_ release]; 43 // Finally, it's safe to delete this since we've detached. 44 delete this; 45 } 46 47 bool BrowserAccessibilityMac::IsNative() const { 48 return true; 49 } 50 51 void BrowserAccessibilityMac::RecreateNativeObject() { 52 if (!browser_accessibility_cocoa_) 53 return; 54 55 // Preserve the children so that recreating the native object doesn't 56 // end up recreating the whole subtree. 57 base::scoped_nsobject<NSMutableArray> children; 58 [browser_accessibility_cocoa_ swapChildren:&children]; 59 [browser_accessibility_cocoa_ detach]; 60 [browser_accessibility_cocoa_ release]; 61 browser_accessibility_cocoa_ = [[BrowserAccessibilityCocoa alloc] 62 initWithObject:this]; 63 [browser_accessibility_cocoa_ swapChildren:&children]; 64 } 65 66 BrowserAccessibilityCocoa* BrowserAccessibility::ToBrowserAccessibilityCocoa() { 67 return static_cast<BrowserAccessibilityMac*>(this)-> 68 native_view(); 69 } 70 71 } // namespace content 72
