ui/events/test/test_event_targeter.h

   1 // Copyright 2015 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 #ifndef UI_EVENTS_TEST_TEST_EVENT_TARGETER_H_
   6 #define UI_EVENTS_TEST_TEST_EVENT_TARGETER_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "base/macros.h"
  10 #include "ui/events/event_targeter.h"
  11
  12 namespace ui {
  13 namespace test {
  14
  15 class TestEventTarget;
  16
  17 // An EventTargeter which is used to allow a bubbling behaviour in event
  18 // dispatch: if an event is not handled after being dispatched to its
  19 // |initial_target|, the event is dispatched to the next-best target as
  20 // specified by FindNextBestTarget().
  21 // Bubbling behaviour is controlled by |should_bubble| at creation time.
  22 class TestEventTargeter : public EventTargeter {
  23  public:
  24   TestEventTargeter(TestEventTarget* initial_target, bool should_bubble);
  25   ~TestEventTargeter() override;
  26
  27   void set_target(TestEventTarget* target);
  28
  29  private:
  30   // EventTargeter:
  31   EventTarget* FindTargetForEvent(EventTarget* root, Event* event) override;
  32   EventTarget* FindNextBestTarget(EventTarget* previous_target,
  33                                   Event* event) override;
  34
  35   TestEventTarget* target_;
  36   bool should_bubble_;
  37
  38   DISALLOW_COPY_AND_ASSIGN(TestEventTargeter);
  39 };
  40
  41 }  // namespace test
  42 }  // namespace ui
  43
  44 #endif  // UI_EVENTS_TEST_TEST_EVENT_TARGETER_H_