Refactor intra-strip panel drags by introducing PanelDragController.

chrome/browser/ui/panels/panel_browser_view.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 "chrome/browser/ui/panels/panel_browser_view.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "chrome/browser/native_window_notification_source.h"
 #include "chrome/browser/ui/panels/panel.h"
@@ skipping 431 matching lines @@
   mouse_pressed_ = true;
   mouse_pressed_time_ = base::TimeTicks::Now();
   mouse_dragging_state_ = NO_DRAGGING;
   return true;
 }
 
 bool PanelBrowserView::OnTitlebarMouseDragged(const gfx::Point& location) {
   if (!mouse_pressed_)
     return false;
 
-  if (!panel_->draggable())
+  if (!panel_->manager()->CanDrag(panel_.get()))
     return true;
 
   gfx::Point last_mouse_location = mouse_location_;
 
   // |location| is in the view's coordinate system. Convert it to the screen
   // coordinate system.
   mouse_location_ = location;
   views::View::ConvertPointToScreen(this, &mouse_location_);
 
   int delta_x = mouse_location_.x() - last_mouse_location.x();
   int delta_y = mouse_location_.y() - last_mouse_location.y();
   if (mouse_dragging_state_ == NO_DRAGGING &&
       ExceededDragThreshold(delta_x, delta_y)) {
     // When a drag begins, we do not want to the client area to still receive
     // the focus.
     old_focused_view_ = GetFocusManager()->GetFocusedView();
     GetFocusManager()->SetFocusedView(GetFrameView());
 
     panel_->manager()->StartDragging(panel_.get());
     mouse_dragging_state_ = DRAGGING_STARTED;
   }
   if (mouse_dragging_state_ == DRAGGING_STARTED)
-    panel_->manager()->Drag(delta_x);
+    panel_->manager()->Drag(delta_x, delta_y);
   return true;
 }
 
 bool PanelBrowserView::OnTitlebarMouseReleased() {
   if (mouse_dragging_state_ == DRAGGING_STARTED) {
     // When a drag ends, restore the focus.
     if (old_focused_view_) {
       GetFocusManager()->SetFocusedView(old_focused_view_);
       old_focused_view_ = NULL;
     }
@@ skipping 145 matching lines @@
 }
 
 bool NativePanelTestingWin::IsWindowSizeKnown() const {
   return true;
 }
 
 bool NativePanelTestingWin::IsAnimatingBounds() const {
   return panel_browser_view_->bounds_animator_.get() &&
          panel_browser_view_->bounds_animator_->is_animating();
 }