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// Copyright 2020 The Chromium Authors
// 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/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "ui/gfx/x/connection.h"
#include "ui/gfx/x/event.h"
#include "ui/gfx/x/xproto.h"
namespace x11 {
class ScopedEventSelector;
}
namespace ui {
// Listens for global workspace changes and notifies observers.
class COMPONENT_EXPORT(UI_BASE_X) X11WorkspaceHandler
: public x11::EventObserver {
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:
// x11::EventObserver
void OnEvent(const x11::Event& event) override;
void OnWorkspaceResponse(x11::GetPropertyResponse response);
// The native root window.
x11::Window x_root_window_;
// Events selected on x_root_window_.
x11::ScopedEventSelector x_root_window_events_;
std::string workspace_;
const raw_ptr<Delegate> delegate_;
base::WeakPtrFactory<X11WorkspaceHandler> weak_factory_{this};
};
} // namespace ui
#endif // UI_BASE_X_X11_WORKSPACE_HANDLER_H_
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