Support mouse lock in Flash fullscreen mode.

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index b133a2cf5a796b2932355b1ee082e25c98e5da33..60dd5cc8f0b31c0bc616a0230ebaeb8f373baa75 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -448,6 +448,77 @@ struct RenderViewImpl::PendingFileChooser {
 
 namespace {
 

[scheib, 2012/05/29 21:47:14]

Consider moving to a new implementation file? render_view_impl.cc is already
huge, and the initial goal of creating the mouse lock dispatcher object was to
move details out.

[yzshen1, 2012/05/30 06:41:30]

Good point. Thanks!

On 2012/05/29 21:47:14, scheib wrote:

+// RenderViewMouseLockDispatcher is owned by RenderViewImpl.
+class RenderViewMouseLockDispatcher : public MouseLockDispatcher,

[brettw, 2012/05/29 21:27:10]

Could you move this to a separate file for just this class? I'm loath to make
render_view_impl.cc any longer...

[yzshen1, 2012/05/30 06:41:30]

Done. Thanks!

On 2012/05/29 21:27:10, brettw wrote:

+                                      public content::RenderViewObserver {
+ public:
+  explicit RenderViewMouseLockDispatcher(RenderViewImpl* render_view_impl);
+  virtual ~RenderViewMouseLockDispatcher();
+
+ private:
+  // MouseLockDispatcher implementation.
+  virtual void SendLockMouseRequest() OVERRIDE;
+  virtual void SendUnlockMouseRequest() OVERRIDE;
+
+  // RenderView::Observer implementation.
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
+
+  void OnMsgLockMouseACK(bool succeeded);
+
+  RenderViewImpl* render_view_impl_;
+
+  DISALLOW_COPY_AND_ASSIGN(RenderViewMouseLockDispatcher);
+};
+
+RenderViewMouseLockDispatcher::RenderViewMouseLockDispatcher(
+    RenderViewImpl* render_view_impl)
+    : content::RenderViewObserver(render_view_impl),
+      render_view_impl_(render_view_impl) {
+}
+
+RenderViewMouseLockDispatcher::~RenderViewMouseLockDispatcher() {
+}
+
+void RenderViewMouseLockDispatcher::SendLockMouseRequest() {
+  bool user_gesture =
+      render_view_impl_->webview() &&
+      render_view_impl_->webview()->mainFrame() &&
+      render_view_impl_->webview()->mainFrame()->isProcessingUserGesture();
+
+  Send(new ViewHostMsg_LockMouse(routing_id(), user_gesture, false));
+}
+
+void RenderViewMouseLockDispatcher::SendUnlockMouseRequest() {
+  Send(new ViewHostMsg_UnlockMouse(routing_id()));
+}
+
+bool RenderViewMouseLockDispatcher::OnMessageReceived(
+    const IPC::Message& message) {
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(RenderViewMouseLockDispatcher, message)
+    IPC_MESSAGE_HANDLER(ViewMsg_LockMouse_ACK, OnMsgLockMouseACK)
+    IPC_MESSAGE_FORWARD(ViewMsg_MouseLockLost,
+                        static_cast<MouseLockDispatcher*>(this),
+                        MouseLockDispatcher::OnMouseLockLost)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+  return handled;
+}
+
+void RenderViewMouseLockDispatcher::OnMsgLockMouseACK(bool succeeded) {
+  // Notify the base class.
+  OnLockMouseACK(succeeded);
+
+  // Mouse Lock removes the system cursor and provides all mouse motion as
+  // .movementX/Y values on events all sent to a fixed target. This requires
+  // content to specifically request the mode to be entered.
+  // Mouse Capture is implicitly given for the duration of a drag event, and
+  // sends all mouse events to the initial target of the drag.
+  // If Lock is entered it supercedes any in progress Capture.
+  if (succeeded && render_view_impl_->webwidget())
+    render_view_impl_->webwidget()->mouseCaptureLost();
+}
+
 class WebWidgetLockTarget : public MouseLockDispatcher::LockTarget {
  public:
   explicit WebWidgetLockTarget(WebKit::WebWidget* webwidget)
@@ -619,7 +690,7 @@ RenderViewImpl::RenderViewImpl(
   // along with the RenderView automatically.
   devtools_agent_ = new DevToolsAgent(this);
   renderer_accessibility_ = new RendererAccessibility(this, accessibility_mode);
-  mouse_lock_dispatcher_ = new MouseLockDispatcher(this);
+  mouse_lock_dispatcher_ = new RenderViewMouseLockDispatcher(this);
   intents_host_ = new WebIntentsHost(this);
 
   new IdleUserDetector(this);