X11: Remove calls to XSelectInput

ui/aura/window_tree_host_x11.h

 // 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.
 
 #ifndef UI_AURA_WINDOW_TREE_HOST_X11_H_
 #define UI_AURA_WINDOW_TREE_HOST_X11_H_
 
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/macros.h"
 #include "ui/aura/aura_export.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/events/platform/platform_event_dispatcher.h"
 #include "ui/gfx/geometry/insets.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/x/x11_atom_cache.h"
 
 // X forward decls to avoid including Xlib.h in a header file.
 typedef struct _XDisplay XDisplay;
 typedef unsigned long XID;
 typedef XID Window;
 
 namespace ui {
 class MouseEvent;
+class XScopedEventSelector;
 }
 
 namespace aura {
 
 class AURA_EXPORT WindowTreeHostX11 : public WindowTreeHost,
                                       public ui::PlatformEventDispatcher {
  public:
   explicit WindowTreeHostX11(const gfx::Rect& bounds);
   ~WindowTreeHostX11() override;
 
   // ui::PlatformEventDispatcher:
   bool CanDispatchEvent(const ui::PlatformEvent& event) override;
   uint32_t DispatchEvent(const ui::PlatformEvent& event) override;
 
   // WindowTreeHost:
   ui::EventSource* GetEventSource() override;
   gfx::AcceleratedWidget GetAcceleratedWidget() override;
   void ShowImpl() override;
   void HideImpl() override;
   gfx::Rect GetBounds() const override;
   void SetBounds(const gfx::Rect& bounds) override;
   gfx::Point GetLocationOnNativeScreen() const override;
   void SetCapture() override;
   void ReleaseCapture() override;
   void SetCursorNative(gfx::NativeCursor cursor_type) override;
   void MoveCursorToNative(const gfx::Point& location) override;
   void OnCursorVisibilityChangedNative(bool show) override;
 
+  // Deselects mouse and keyboard events on |xwindow_|.
+  void DisableInput();

[sadrul, 2016/09/08 00:09:19]

Why do we want this?

[Daniel Erat, 2016/09/08 03:05:51]

it looks like it's used by ash/display/mirror_window_controller.cc (i don't have
any knowledge about that code, though).

+
  protected:
   // Called when X Configure Notify event is recevied.
   virtual void OnConfigureNotify();
 
   // Translates the native mouse location into screen coordinates and
   // dispatches the event via WindowEventDispatcher.
   virtual void TranslateAndDispatchLocatedEvent(ui::LocatedEvent* event);
 
   ::Window x_root_window() { return x_root_window_; }
   XDisplay* xdisplay() { return xdisplay_; }
   const gfx::Rect& bounds() const { return bounds_; }
   ui::X11AtomCache* atom_cache() { return &atom_cache_; }
 
  private:
   // Dispatches XI2 events. Note that some events targetted for the X root
   // window are dispatched to the aura root window (e.g. touch events after
   // calibration).
   void DispatchXI2Event(const base::NativeEvent& event);
 
   // Sets the cursor on |xwindow_| to |cursor|.  Does not check or update
   // |current_cursor_|.
   void SetCursorInternal(gfx::NativeCursor cursor);
 
   // The display and the native X window hosting the root window.
   XDisplay* xdisplay_;
   ::Window xwindow_;
 
+  // Events selected on |xwindow_|.
+  std::unique_ptr<ui::XScopedEventSelector> xwindow_events_;
+
   // The native root window.
   ::Window x_root_window_;
 
   // Current Aura cursor.
   gfx::NativeCursor current_cursor_;
 
   // Is the window mapped to the screen?
   bool window_mapped_;
 
   // The bounds of |xwindow_|.
   gfx::Rect bounds_;
 
   ui::X11AtomCache atom_cache_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowTreeHostX11);
 };
 
 namespace test {
 
 // Set the default value of the override redirect flag used to
 // create a X window for WindowTreeHostX11.
 AURA_EXPORT void SetUseOverrideRedirectWindowByDefault(bool override_redirect);
 
 }  // namespace test
 }  // namespace aura
 
 #endif  // UI_AURA_WINDOW_TREE_HOST_X11_H_