ui/events/event_processor.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/events/event_processor.h"
   6
   7 #include "ui/events/event_target.h"
   8 #include "ui/events/event_targeter.h"
   9
  10 namespace ui {
  11
  12 EventDispatchDetails EventProcessor::OnEventFromSource(Event* event) {
  13   EventTarget* root = GetRootTarget();
  14   CHECK(root);
  15   EventTargeter* targeter = root->GetEventTargeter();
  16   CHECK(targeter);
  17
  18   PrepareEventForDispatch(event);
  19   EventTarget* target = targeter->FindTargetForEvent(root, event);
  20
  21   while (target) {
  22     EventDispatchDetails details = DispatchEvent(target, event);
  23     if (details.dispatcher_destroyed ||
  24         details.target_destroyed ||
  25         event->handled()) {
  26       return details;
  27     }
  28
  29     target = targeter->FindNextBestTarget(target, event);
  30   }
  31
  32   return EventDispatchDetails();
  33 }
  34
  35 void EventProcessor::PrepareEventForDispatch(Event* event) {
  36 }
  37
  38 }  // namespace ui