MacViews: Implement Tab Dragging

ui/views/cocoa/bridged_content_view.mm

Index: ui/views/cocoa/bridged_content_view.mm
diff --git a/ui/views/cocoa/bridged_content_view.mm b/ui/views/cocoa/bridged_content_view.mm
index 3a3e83962f17744628618a60069066f79731fb5e..30e884f889ab89708fc50b6a27a1b85662b79f1d 100644
--- a/ui/views/cocoa/bridged_content_view.mm
+++ b/ui/views/cocoa/bridged_content_view.mm
@@ -54,6 +54,8 @@ bool DispatchEventToMenu(views::Widget* widget, ui::KeyboardCode key_code) {
   return false;
 }
 
+bool g_ignore_mouse_events = false;
+
 }  // namespace
 
 @interface BridgedContentView ()
@@ -93,6 +95,7 @@ bool DispatchEventToMenu(views::Widget* widget, ui::KeyboardCode key_code) {
 
 @synthesize hostedView = hostedView_;
 @synthesize textInputClient = textInputClient_;
+@synthesize ignoreMouseEvents = ignoreMouseEvents_;
 @synthesize mouseDownCanMoveWindow = mouseDownCanMoveWindow_;
 
 - (id)initWithView:(views::View*)viewToHost {
@@ -118,6 +121,11 @@ bool DispatchEventToMenu(views::Widget* widget, ui::KeyboardCode key_code) {
   return self;
 }
 
+- (void)setIgnoreMouseEvents:(BOOL)flag {
+  ignoreMouseEvents_ = flag;
+  g_ignore_mouse_events = flag;
+}
+
 - (void)clearView {
   hostedView_ = NULL;
   [cursorTrackingArea_.get() clearOwner];
@@ -125,6 +133,11 @@ bool DispatchEventToMenu(views::Widget* widget, ui::KeyboardCode key_code) {
 }
 
 - (void)processCapturedMouseEvent:(NSEvent*)theEvent {
+  if (CGEventGetIntegerValueField([theEvent CGEvent], kCGEventSourceUserData)) {
+    DLOG(INFO) << "Ignoring generated event in capture.";
+    return;
+  }
+
   if (!hostedView_)
     return;
 
@@ -141,6 +154,7 @@ bool DispatchEventToMenu(views::Widget* widget, ui::KeyboardCode key_code) {
   ui::MouseEvent event(theEvent);
   event.set_location(
       MovePointToWindow([theEvent locationInWindow], source, target));
+  DLOG(INFO) << "processing captured event in window at: " << event.location().ToString();
   hostedView_->GetWidget()->OnMouseEvent(&event);
 }
 
@@ -259,11 +273,18 @@ bool DispatchEventToMenu(views::Widget* widget, ui::KeyboardCode key_code) {
 // Translates the location of |theEvent| to toolkit-views coordinates and passes
 // the event to NativeWidgetMac for handling.
 - (void)mouseEvent:(NSEvent*)theEvent {
-  if (!hostedView_)
+  if (CGEventGetIntegerValueField([theEvent CGEvent], kCGEventSourceUserData)) {
+    DLOG(INFO) << "Ignoring generated event [regular].";
+    return;
+  }
+
+  if (!hostedView_ || g_ignore_mouse_events)
     return;
 
   ui::MouseEvent event(theEvent);
 
+  //DLOG(INFO) << "processing regular mouse event event in window at: " << event.location().ToString();
+
   // Aura updates tooltips with the help of aura::Window::AddPreTargetHandler().
   // Mac hooks in here.
   [self updateTooltipIfRequiredAt:event.location()];