File: settings_provider_gtk.h

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// Copyright 2017 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_GTK_SETTINGS_PROVIDER_GTK_H_
#define UI_GTK_SETTINGS_PROVIDER_GTK_H_

#include <memory>
#include <string>
#include <vector>

#include "base/memory/raw_ptr.h"
#include "ui/base/glib/scoped_gsignal.h"
#include "ui/gtk/settings_provider.h"
#include "ui/linux/linux_ui.h"

typedef struct _GParamSpec GParamSpec;
typedef struct _GtkSettings GtkSettings;

namespace gtk {

class GtkUi;

class SettingsProviderGtk : public SettingsProvider {
 public:
  explicit SettingsProviderGtk(GtkUi* delegate);

  SettingsProviderGtk(const SettingsProviderGtk&) = delete;
  SettingsProviderGtk& operator=(const SettingsProviderGtk&) = delete;

  ~SettingsProviderGtk() override;

 private:
  class FrameActionSettingWatcher {
   public:
    FrameActionSettingWatcher(SettingsProviderGtk* settings_provider,
                              const std::string& setting_name,
                              ui::LinuxUi::WindowFrameActionSource action_type,
                              ui::LinuxUi::WindowFrameAction default_action);

    FrameActionSettingWatcher(const FrameActionSettingWatcher&) = delete;
    FrameActionSettingWatcher& operator=(const FrameActionSettingWatcher&) =
        delete;

    ~FrameActionSettingWatcher();

    void OnSettingChanged(GtkSettings* settings, GParamSpec* param);

   private:
    raw_ptr<SettingsProviderGtk> settings_provider_;
    std::string setting_name_;
    ui::LinuxUi::WindowFrameActionSource action_type_;
    ui::LinuxUi::WindowFrameAction default_action_;
    ScopedGSignal signal_;
  };

  void SetWindowButtonOrderingFromGtkLayout(const std::string& gtk_layout);

  void OnDecorationButtonLayoutChanged(GtkSettings* settings,
                                       GParamSpec* param);

  raw_ptr<GtkUi> delegate_;

  ScopedGSignal signal_;

  std::vector<std::unique_ptr<FrameActionSettingWatcher>>
      frame_action_setting_watchers_;
};

}  // namespace gtk

#endif  // UI_GTK_SETTINGS_PROVIDER_GTK_H_