Mouse lock implementation, including the renderer side and the Windows version of the browser side.

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index 0541afe311f539e07552d9055e37bbf46ad7af5e..3eae941222e02a342e19df00a37a358d6de53d8f 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -446,10 +446,16 @@ void RenderWidget::OnHandleInputEvent(const IPC::Message& message) {
   if (input_event->type == WebInputEvent::RawKeyDown)
     message.ReadBool(&iter, &is_keyboard_shortcut);
 
-  bool processed = false;
+  bool mouse_event_absorbed = false;

[brettw, 2011/09/14 22:17:58]

I think this would be more clear if this were called "prevent_default" or
something like that. The current name is too similar to "processed".

[yzshen1, 2011/09/19 20:48:41]

Done. It looks much better.

+  if (WebInputEvent::isMouseEventType(input_event->type)) {
+    mouse_event_absorbed = BeforeHandleMouseEvent(

[brettw, 2011/09/14 22:17:58]

Can you rename this to "WillHandleMouseEvent" which better matches the
Before/Did scheme we use in other places.

[yzshen1, 2011/09/19 20:48:41]

Done.

+        *(static_cast<const WebMouseEvent*>(input_event)));
+  }
+
+  bool processed = mouse_event_absorbed;
   if (input_event->type != WebInputEvent::Char || !suppress_next_char_events_) {
     suppress_next_char_events_ = false;
-    if (webwidget_)
+    if (!processed && webwidget_)
       processed = webwidget_->handleInputEvent(*input_event);
   }
 
@@ -484,8 +490,10 @@ void RenderWidget::OnHandleInputEvent(const IPC::Message& message) {
 
   if (WebInputEvent::isKeyboardEventType(input_event->type))
     DidHandleKeyEvent();
-  if (WebInputEvent::isMouseEventType(input_event->type))
+  if (!mouse_event_absorbed &&
+      WebInputEvent::isMouseEventType(input_event->type)) {
     DidHandleMouseEvent(*(static_cast<const WebMouseEvent*>(input_event)));
+  }
 }
 
 void RenderWidget::OnMouseCaptureLost() {