Create only a single LegacyRenderWidgetHostHWND per WebContentsViewAura.

content/browser/web_contents/web_contents_view_aura.cc

 // 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/web_contents/web_contents_view_aura.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/auto_reset.h"
@@ skipping 51 matching lines @@
 #include "ui/base/dragdrop/os_exchange_data.h"
 #include "ui/base/hit_test.h"
 #include "ui/compositor/layer.h"
 #include "ui/display/screen.h"
 #include "ui/events/event.h"
 #include "ui/events/event_utils.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/image/image_png_rep.h"
 #include "ui/gfx/image/image_skia.h"
-#include "ui/touch_selection/touch_selection_controller.h"
+#include "ui/gfx/native_widget_types.h"
+
 #include "ui/wm/public/drag_drop_client.h"
 #include "ui/wm/public/drag_drop_delegate.h"
 
+#if defined(OS_WIN)
+#include "content/browser/accessibility/browser_accessibility_manager.h"
+#include "content/browser/accessibility/browser_accessibility_win.h"
+#include "ui/base/win/hidden_window.h"
+#endif
+
 namespace content {
 WebContentsView* CreateWebContentsView(
     WebContentsImpl* web_contents,
     WebContentsViewDelegate* delegate,
     RenderViewHostDelegateView** render_view_host_delegate_view) {
   WebContentsViewAura* rv = new WebContentsViewAura(web_contents, delegate);
   *render_view_host_delegate_view = rv;
   return rv;
 }
 
@@ skipping 364 matching lines @@
   }
 
   void OnWindowDestroying(aura::Window* window) override {
     if (window == host_window_) {
       host_window_->RemoveObserver(this);
       host_window_ = NULL;
     }
   }
 
   void OnWindowAddedToRootWindow(aura::Window* window) override {
-    if (window == view_->window_.get())
+    if (window == view_->window_.get()) {
       window->GetHost()->AddObserver(this);
+#if defined(OS_WIN)
+      if (view_->legacy_hwnd_) {
+        view_->legacy_hwnd_->UpdateParent(
+            window->GetHost()->GetAcceleratedWidget());
+      }
+#endif
+    }
   }
 
   void OnWindowRemovingFromRootWindow(aura::Window* window,
                                       aura::Window* new_root) override {
-    if (window == view_->window_.get())
+    if (window == view_->window_.get()) {
       window->GetHost()->RemoveObserver(this);
+#if defined(OS_WIN)
+      if (view_->legacy_hwnd_)
+        view_->legacy_hwnd_->UpdateParent(ui::GetHiddenWindow());
+#endif
+    }
   }
 
   // Overridden WindowTreeHostObserver:
   void OnHostMoved(const aura::WindowTreeHost* host,
                    const gfx::Point& new_origin) override {
     TRACE_EVENT1("ui",
                  "WebContentsViewAura::WindowObserver::OnHostMoved",
                  "new_origin", new_origin.ToString());
 
     // This is for the desktop case (i.e. Aura desktop).
@@ skipping 141 matching lines @@
 
 void WebContentsViewAura::GetContainerBounds(gfx::Rect *out) const {
   *out = window_->GetBoundsInScreen();
 }
 
 void WebContentsViewAura::SizeContents(const gfx::Size& size) {
   gfx::Rect bounds = window_->bounds();
   if (bounds.size() != size) {
     bounds.set_size(size);
     window_->SetBounds(bounds);
+#if defined(OS_WIN)
+    if (legacy_hwnd_)
+      legacy_hwnd_->SetBounds(window_->GetBoundsInRootWindow());
+#endif
   } else {
     // Our size matches what we want but the renderers size may not match.
     // Pretend we were resized so that the renderers size is updated too.
     SizeChangedCommon(size);
   }
 }
 
 void WebContentsViewAura::Focus() {
   if (web_contents_->GetInterstitialPage()) {
     web_contents_->GetInterstitialPage()->Focus();
@@ skipping 73 matching lines @@
   // 1) guests do not support NPAPI plugins.
   // 2) guests' window bounds are supposed to come from its embedder.
   if (!BrowserPluginGuest::IsGuest(web_contents_))
     window_observer_.reset(new WindowObserver(this));
 
   // delegate_->GetDragDestDelegate() creates a new delegate on every call.
   // Hence, we save a reference to it locally. Similar model is used on other
   // platforms as well.
   if (delegate_)
     drag_dest_delegate_ = delegate_->GetDragDestDelegate();
+
+#if defined(OS_WIN)
+  if (context && context->GetHost()) {
+    HWND parent_hwnd = context->GetHost()->GetAcceleratedWidget();
+    CHECK(parent_hwnd);
+    legacy_hwnd_.reset(LegacyRenderWidgetHostHWND::Create(parent_hwnd, this));
+  }
+#endif
 }
 
 RenderWidgetHostViewBase* WebContentsViewAura::CreateViewForWidget(
     RenderWidgetHost* render_widget_host, bool is_guest_view_hack) {
   if (render_widget_host->GetView()) {
     // During testing, the view will already be set up in most cases to the
     // test view, so we don't want to clobber it with a real one. To verify that
     // this actually is happening (and somebody isn't accidentally creating the
     // view twice), we check for the RVH Factory, which will be set when we're
     // making special ones (which go along with the special views).
@@ skipping 14 matching lines @@
 
   // We listen to drag drop events in the newly created view's window.
   aura::client::SetDragDropDelegate(view->GetNativeView(), this);
 
   if (view->overscroll_controller() &&
       (!web_contents_->GetDelegate() ||
        web_contents_->GetDelegate()->CanOverscrollContent())) {
     InstallOverscrollControllerDelegate(view);
   }
 
+#if defined(OS_WIN)
+  if (legacy_hwnd_)
+    view->SetLegacyRenderWidgetHostHWND(legacy_hwnd_.get());
+#endif
+
   return view;
 }
 
 RenderWidgetHostViewBase* WebContentsViewAura::CreateViewForPopupWidget(
     RenderWidgetHost* render_widget_host) {
-  return new RenderWidgetHostViewAura(render_widget_host, false);
+  RenderWidgetHostViewAura* view =
+      new RenderWidgetHostViewAura(render_widget_host, false);
+#if defined(OS_WIN)
+  if (legacy_hwnd_)
+    view->SetLegacyRenderWidgetHostHWND(legacy_hwnd_.get());
+#endif
+  return view;
 }
 
 void WebContentsViewAura::SetPageTitle(const base::string16& title) {
   window_->SetTitle(title);
 }
 
 void WebContentsViewAura::RenderViewCreated(RenderViewHost* host) {
 }
 
 void WebContentsViewAura::RenderViewSwappedIn(RenderViewHost* host) {
@@ skipping 346 matching lines @@
   return ConvertFromWeb(current_drag_op_);
 }
 
 void WebContentsViewAura::OnWindowVisibilityChanged(aura::Window* window,
                                                     bool visible) {
   // Ignore any visibility changes in the hierarchy below.
   if (window != window_.get() && window_->Contains(window))
     return;
 
   web_contents_->UpdateWebContentsVisibility(visible);
+
+#if defined(OS_WIN)
+  if (!legacy_hwnd_)
+    return;
+
+  if (visible && GetNativeView() && GetNativeView()->GetHost()) {
+    legacy_hwnd_->UpdateParent(
+        GetNativeView()->GetHost()->GetAcceleratedWidget());
+    legacy_hwnd_->SetBounds(window_->GetBoundsInRootWindow());
+    legacy_hwnd_->Show();
+  } else {
+    // We reparent the legacy Chrome_RenderWidgetHostHWND window to the global
+    // hidden window on the same lines as Windowed plugin windows.
+    legacy_hwnd_->UpdateParent(ui::GetHiddenWindow());
+    legacy_hwnd_->Hide();
+  }
+#endif
 }
 
+#if defined(OS_WIN)
+gfx::NativeViewAccessible
+WebContentsViewAura::GetNativeViewAccessible() {
+  BrowserAccessibilityManager* manager =
+      web_contents_->GetRootBrowserAccessibilityManager();
+  if (!manager)
+    return nullptr;
+
+  return ToBrowserAccessibilityWin(manager->GetRoot());
+}
+#endif
+
 }  // namespace content