| // Copyright 2020 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_BASE_X_X11_WORKSPACE_HANDLER_H_ |
| #define UI_BASE_X_X11_WORKSPACE_HANDLER_H_ |
| |
| #include <memory> |
| |
| #include "base/component_export.h" |
| #include "base/memory/weak_ptr.h" |
| #include "ui/events/platform/x11/x11_event_source.h" |
| #include "ui/gfx/x/event.h" |
| #include "ui/gfx/x/x11.h" |
| #include "ui/gfx/x/xproto.h" |
| |
| namespace ui { |
| |
| class XScopedEventSelector; |
| |
| // Listens for global workspace changes and notifies observers. |
| class COMPONENT_EXPORT(UI_BASE_X) X11WorkspaceHandler |
| : public ui::XEventDispatcher { |
| public: |
| class Delegate { |
| public: |
| // Called when the workspace ID changes to|new_workspace|. |
| virtual void OnCurrentWorkspaceChanged( |
| const std::string& new_workspace) = 0; |
| |
| protected: |
| virtual ~Delegate() = default; |
| }; |
| explicit X11WorkspaceHandler(Delegate* delegate); |
| ~X11WorkspaceHandler() override; |
| X11WorkspaceHandler(const X11WorkspaceHandler&) = delete; |
| X11WorkspaceHandler& operator=(const X11WorkspaceHandler&) = delete; |
| |
| // Gets the current workspace ID. |
| std::string GetCurrentWorkspace(); |
| |
| private: |
| // ui::XEventDispatcher |
| bool DispatchXEvent(x11::Event* event) override; |
| |
| void OnWorkspaceResponse(x11::GetPropertyResponse response); |
| |
| // The native root window. |
| x11::Window x_root_window_; |
| |
| // Events selected on x_root_window_. |
| std::unique_ptr<ui::XScopedEventSelector> x_root_window_events_; |
| |
| std::string workspace_; |
| |
| Delegate* const delegate_; |
| |
| base::WeakPtrFactory<X11WorkspaceHandler> weak_factory_{this}; |
| }; |
| |
| } // namespace ui |
| |
| #endif // UI_BASE_X_X11_WORKSPACE_HANDLER_H_ |