Revert 284065 "Revert of Revert of Migrate accessibility from Re..."

trunk/src/content/browser/renderer_host/render_widget_host_view_mac.mm

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/renderer_host/render_widget_host_view_mac.h"
 
 #import <objc/runtime.h>
 #include <OpenGL/gl.h>
 #include <QuartzCore/QuartzCore.h>
 
@@ skipping 2038 matching lines @@
   RenderWidgetHostViewMacDictionaryHelper helper(this);
   helper.ShowDefinitionForSelection();
 }
 
 void RenderWidgetHostViewMac::SetBackgroundOpaque(bool opaque) {
   RenderWidgetHostViewBase::SetBackgroundOpaque(opaque);
   if (render_widget_host_)
     render_widget_host_->SetBackgroundOpaque(opaque);
 }
 
-BrowserAccessibilityManager*
-    RenderWidgetHostViewMac::CreateBrowserAccessibilityManager(
-        BrowserAccessibilityDelegate* delegate) {
-  return new BrowserAccessibilityManagerMac(
-      cocoa_view_,
-      BrowserAccessibilityManagerMac::GetEmptyDocument(),
-      delegate);
+void RenderWidgetHostViewMac::CreateBrowserAccessibilityManagerIfNeeded() {
+  if (!GetBrowserAccessibilityManager()) {
+    SetBrowserAccessibilityManager(
+        new BrowserAccessibilityManagerMac(
+            cocoa_view_,
+            BrowserAccessibilityManagerMac::GetEmptyDocument(),
+            render_widget_host_));
+  }
 }
 
 gfx::Point RenderWidgetHostViewMac::AccessibilityOriginInScreen(
     const gfx::Rect& bounds) {
   NSPoint origin = NSMakePoint(bounds.x(), bounds.y());
   NSSize size = NSMakeSize(bounds.width(), bounds.height());
   origin.y = NSHeight([cocoa_view_ bounds]) - origin.y;
   NSPoint originInWindow = [cocoa_view_ convertPoint:origin toView:nil];
   NSPoint originInScreen =
       [[cocoa_view_ window] convertBaseToScreen:originInWindow];
   originInScreen.y = originInScreen.y - size.height;
   return gfx::Point(originInScreen.x, originInScreen.y);
 }
 
-void RenderWidgetHostViewMac::AccessibilityShowMenu(const gfx::Point& point) {
-  NSPoint location = NSMakePoint(point.x(), point.y());
+void RenderWidgetHostViewMac::OnAccessibilitySetFocus(int accObjId) {
+  // Immediately set the focused item even though we have not officially set
+  // focus on it as VoiceOver expects to get the focused item after this
+  // method returns.
+  BrowserAccessibilityManager* manager = GetBrowserAccessibilityManager();
+  if (manager)
+    manager->SetFocus(manager->GetFromID(accObjId), false);
+}
+
+void RenderWidgetHostViewMac::AccessibilityShowMenu(int accObjId) {
+  BrowserAccessibilityManager* manager = GetBrowserAccessibilityManager();
+  if (!manager)
+    return;
+  BrowserAccessibilityCocoa* obj =
+      manager->GetFromID(accObjId)->ToBrowserAccessibilityCocoa();
+
+  // Performs a right click copying WebKit's
+  // accessibilityPerformShowMenuAction.
+  NSPoint objOrigin = [obj origin];
+  NSSize size = [[obj size] sizeValue];
+  gfx::Point origin = AccessibilityOriginInScreen(
+      gfx::Rect(objOrigin.x, objOrigin.y, size.width, size.height));
+  NSPoint location = NSMakePoint(origin.x(), origin.y());
   location = [[cocoa_view_ window] convertScreenToBase:location];
+  location.x += size.width/2;
+  location.y += size.height/2;
+
   NSEvent* fakeRightClick = [NSEvent
                           mouseEventWithType:NSRightMouseDown
                                     location:location
                                modifierFlags:0
                                    timestamp:0
                                 windowNumber:[[cocoa_view_ window] windowNumber]
                                      context:[NSGraphicsContext currentContext]
                                  eventNumber:0
                                   clickCount:1
                                     pressure:0];
 
   [cocoa_view_ mouseEvent:fakeRightClick];
 }
 
+
+
 void RenderWidgetHostViewMac::SetTextInputActive(bool active) {
   if (active) {
     if (text_input_type_ == ui::TEXT_INPUT_TYPE_PASSWORD)
       EnablePasswordInput();
     else
       DisablePasswordInput();
   } else {
     if (text_input_type_ == ui::TEXT_INPUT_TYPE_PASSWORD)
       DisablePasswordInput();
   }
@@ skipping 1028 matching lines @@
   return [fullArray subarrayWithRange:NSMakeRange(index, length)];
 }
 
 - (NSUInteger)accessibilityArrayAttributeCount:(NSString *)attribute {
   NSArray* fullArray = [self accessibilityAttributeValue:attribute];
   return [fullArray count];
 }
 
 - (id)accessibilityAttributeValue:(NSString *)attribute {
   BrowserAccessibilityManager* manager =
-      renderWidgetHostView_->GetHost()->GetRootBrowserAccessibilityManager();
+      renderWidgetHostView_->GetBrowserAccessibilityManager();
 
   // Contents specifies document view of RenderWidgetHostViewCocoa provided by
   // BrowserAccessibilityManager. Children includes all subviews in addition to
   // contents. Currently we do not have subviews besides the document view.
   if (([attribute isEqualToString:NSAccessibilityChildrenAttribute] ||
           [attribute isEqualToString:NSAccessibilityContentsAttribute]) &&
       manager) {
     return [NSArray arrayWithObjects:manager->
         GetRoot()->ToBrowserAccessibilityCocoa(), nil];
   } else if ([attribute isEqualToString:NSAccessibilityRoleAttribute]) {
     return NSAccessibilityScrollAreaRole;
   }
   id ret = [super accessibilityAttributeValue:attribute];
   return ret;
 }
 
 - (NSArray*)accessibilityAttributeNames {
   NSMutableArray* ret = [[[NSMutableArray alloc] init] autorelease];
   [ret addObject:NSAccessibilityContentsAttribute];
   [ret addObjectsFromArray:[super accessibilityAttributeNames]];
   return ret;
 }
 
 - (id)accessibilityHitTest:(NSPoint)point {
-  BrowserAccessibilityManager* manager =
-      renderWidgetHostView_->GetHost()->GetRootBrowserAccessibilityManager();
-  if (!manager)
+  if (!renderWidgetHostView_->GetBrowserAccessibilityManager())
     return self;
   NSPoint pointInWindow = [[self window] convertScreenToBase:point];
   NSPoint localPoint = [self convertPoint:pointInWindow fromView:nil];
   localPoint.y = NSHeight([self bounds]) - localPoint.y;
-  BrowserAccessibilityCocoa* root =
-      manager->GetRoot()->ToBrowserAccessibilityCocoa();
+  BrowserAccessibilityCocoa* root = renderWidgetHostView_->
+      GetBrowserAccessibilityManager()->
+          GetRoot()->ToBrowserAccessibilityCocoa();
   id obj = [root accessibilityHitTest:localPoint];
   return obj;
 }
 
 - (BOOL)accessibilityIsIgnored {
-  BrowserAccessibilityManager* manager =
-      renderWidgetHostView_->GetHost()->GetRootBrowserAccessibilityManager();
-  return !manager;
+  return !renderWidgetHostView_->GetBrowserAccessibilityManager();
 }
 
 - (NSUInteger)accessibilityGetIndexOf:(id)child {
   BrowserAccessibilityManager* manager =
-      renderWidgetHostView_->GetHost()->GetRootBrowserAccessibilityManager();
+      renderWidgetHostView_->GetBrowserAccessibilityManager();
   // Only child is root.
   if (manager &&
       manager->GetRoot()->ToBrowserAccessibilityCocoa() == child) {
     return 0;
   } else {
     return NSNotFound;
   }
 }
 
 - (id)accessibilityFocusedUIElement {
   BrowserAccessibilityManager* manager =
-      renderWidgetHostView_->GetHost()->GetRootBrowserAccessibilityManager();
+      renderWidgetHostView_->GetBrowserAccessibilityManager();
   if (manager) {
     BrowserAccessibility* focused_item = manager->GetFocus(NULL);
     DCHECK(focused_item);
     if (focused_item) {
       BrowserAccessibilityCocoa* focused_item_cocoa =
           focused_item->ToBrowserAccessibilityCocoa();
       DCHECK(focused_item_cocoa);
       if (focused_item_cocoa)
         return focused_item_cocoa;
     }
@@ skipping 736 matching lines @@
 
 // "-webkit-app-region: drag | no-drag" is implemented on Mac by excluding
 // regions that are not draggable. (See ControlRegionView in
 // native_app_window_cocoa.mm). This requires the render host view to be
 // draggable by default.
 - (BOOL)mouseDownCanMoveWindow {
   return YES;
 }
 
 @end