ui/views/test/x11_property_change_waiter.h

   1 // Copyright 2014 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_VIEWS_TEST_X11_PROPERTY_CHANGE_WAITER_H_
   6 #define UI_VIEWS_TEST_X11_PROPERTY_CHANGE_WAITER_H_
   7
   8 #include "base/callback.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "ui/events/platform/platform_event_dispatcher.h"
  11 #include "ui/events/platform/platform_event_types.h"
  12 #include "ui/gfx/x/x11_types.h"
  13
  14 namespace ui {
  15 class ScopedEventDispatcher;
  16 class X11AtomCache;
  17 }
  18
  19 namespace views {
  20
  21 // Blocks till the value of |property| on |window| changes.
  22 class X11PropertyChangeWaiter : public ui::PlatformEventDispatcher {
  23  public:
  24   X11PropertyChangeWaiter(XID window, const char* property);
  25   ~X11PropertyChangeWaiter() override;
  26
  27   // Blocks till the value of |property_| changes.
  28   virtual void Wait();
  29
  30  protected:
  31   // Returns whether the run loop can exit.
  32   virtual bool ShouldKeepOnWaiting(const ui::PlatformEvent& event);
  33
  34   XID xwindow() const {
  35     return x_window_;
  36   }
  37
  38  private:
  39   // ui::PlatformEventDispatcher:
  40   bool CanDispatchEvent(const ui::PlatformEvent& event) override;
  41   uint32_t DispatchEvent(const ui::PlatformEvent& event) override;
  42
  43   XID x_window_;
  44   const char* property_;
  45
  46   // Whether Wait() should block.
  47   bool wait_;
  48
  49   // Ends the run loop.
  50   base::Closure quit_closure_;
  51
  52   // The event mask to be restored upon X11PropertyChangeWaiter's destruction.
  53   long old_event_mask_;
  54
  55   scoped_ptr<ui::ScopedEventDispatcher> dispatcher_;
  56
  57   scoped_ptr<ui::X11AtomCache> atom_cache_;
  58
  59   DISALLOW_COPY_AND_ASSIGN(X11PropertyChangeWaiter);
  60 };
  61
  62 }  // namespace views
  63
  64 #endif  // UI_VIEWS_TEST_X11_PROPERTY_CHANGE_WAITER_H_