Refactors away method implementations in ui::EventTargeter

ash/wm/resize_handle_window_targeter.cc

 // Copyright 2014 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 "ash/wm/resize_handle_window_targeter.h"
 
 #include "ash/ash_constants.h"
 #include "ash/wm/immersive_fullscreen_controller.h"
 #include "ash/wm/window_state.h"
 #include "ui/aura/window.h"
+#include "ui/events/event.h"
 
 namespace ash {
 
 ResizeHandleWindowTargeter::ResizeHandleWindowTargeter(
     aura::Window* window,
     ImmersiveFullscreenController* controller)
     : window_(window),
       immersive_controller_(controller) {
   wm::WindowState* window_state = wm::GetWindowState(window_);
   OnPostWindowStateTypeChange(window_state, wm::WINDOW_STATE_TYPE_DEFAULT);
@@ skipping 20 matching lines @@
                                       kResizeInsideBoundsSize);
   }
 }
 
 void ResizeHandleWindowTargeter::OnWindowDestroying(aura::Window* window) {
   CHECK_EQ(window_, window);
   wm::GetWindowState(window_)->RemoveObserver(this);
   window_ = NULL;
 }
 
-ui::EventTarget* ResizeHandleWindowTargeter::FindTargetForLocatedEvent(
-    ui::EventTarget* root,
+aura::Window* ResizeHandleWindowTargeter::FindTargetForLocatedEvent(
+    aura::Window* window,
     ui::LocatedEvent* event) {
-  aura::Window* window = static_cast<aura::Window*>(root);
   if (window == window_) {
     gfx::Insets insets;
     if (immersive_controller_ && immersive_controller_->IsEnabled() &&
         !immersive_controller_->IsRevealed() &&
         event->IsTouchEvent()) {
       // If the window is in immersive fullscreen, and top-of-window views are
       // not revealed, then touch events towards the top of the window
       // should not reach the child window so that touch gestures can be used to
       // reveal the top-of-windows views. This is needed because the child
       // window may consume touch events and prevent touch-scroll gesture from
       // being generated.
       insets = gfx::Insets(kImmersiveFullscreenTopEdgeInset, 0, 0, 0);
     } else {
       // If the event falls very close to the inside of the frame border, then
       // target the window itself, so that the window can be resized easily.
       insets = frame_border_inset_;
     }
 
     if (!insets.empty()) {
       gfx::Rect bounds = gfx::Rect(window_->bounds().size());
       bounds.Inset(insets);
       if (!bounds.Contains(event->location()))
         return window_;
     }
   }
-  return aura::WindowTargeter::FindTargetForLocatedEvent(root, event);
+  return aura::WindowTargeter::FindTargetForLocatedEvent(window, event);
 }
 
 bool ResizeHandleWindowTargeter::SubtreeShouldBeExploredForEvent(
-    ui::EventTarget* target,
+    aura::Window* window,
     const ui::LocatedEvent& event) {
-  if (target == window_) {
+  if (window == window_) {
     // Defer to the parent's targeter on whether |window_| should be able to
     // receive the event.
-    ui::EventTarget* parent = target->GetParentTarget();
+    ui::EventTarget* parent =
+        static_cast<ui::EventTarget*>(window)->GetParentTarget();
     if (parent) {
-      ui::EventTargeter* targeter = parent->GetEventTargeter();
+      aura::WindowTargeter* targeter =
+          static_cast<aura::WindowTargeter*>(parent->GetEventTargeter());
       if (targeter)
-        return targeter->SubtreeShouldBeExploredForEvent(target, event);
+        return targeter->SubtreeShouldBeExploredForEvent(window, event);
     }
   }
-  return aura::WindowTargeter::SubtreeShouldBeExploredForEvent(target, event);
+  return aura::WindowTargeter::SubtreeShouldBeExploredForEvent(window, event);
 }
 
 }  // namespace ash