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      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 "chrome/browser/ui/views/notifications/balloon_view_host.h"
      6 
      7 #include "chrome/browser/notifications/balloon.h"
      8 #include "content/public/browser/content_browser_client.h"
      9 #include "content/public/browser/render_view_host.h"
     10 #include "content/public/browser/render_widget_host_view.h"
     11 #include "content/public/browser/web_contents.h"
     12 #include "ui/views/widget/widget.h"
     13 
     14 class BalloonViewHostView : public views::NativeViewHost {
     15  public:
     16   explicit BalloonViewHostView(BalloonViewHost* host)
     17       : host_(host),
     18         initialized_(false) {
     19   }
     20 
     21   virtual void ViewHierarchyChanged(
     22       const ViewHierarchyChangedDetails& details) OVERRIDE {
     23     NativeViewHost::ViewHierarchyChanged(details);
     24     if (details.is_add && GetWidget() && !initialized_) {
     25       initialized_ = true;
     26       host_->Init(GetWidget()->GetNativeView());
     27     }
     28   }
     29 
     30  private:
     31   // The host owns this object.
     32   BalloonViewHost* host_;
     33 
     34   bool initialized_;
     35 };
     36 
     37 BalloonViewHost::BalloonViewHost(Balloon* balloon)
     38     : BalloonHost(balloon) {
     39   native_host_ = new BalloonViewHostView(this);
     40 }
     41 
     42 BalloonViewHost::~BalloonViewHost() {
     43   Shutdown();
     44 }
     45 
     46 void BalloonViewHost::Init(gfx::NativeView parent_native_view) {
     47   parent_native_view_ = parent_native_view;
     48   BalloonHost::Init();
     49 
     50   content::RenderWidgetHostView* render_widget_host_view =
     51       web_contents_->GetRenderViewHost()->GetView();
     52 
     53   native_host_->Attach(render_widget_host_view->GetNativeView());
     54 }
     55