/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef MOZ_CONTAINER_H_
#define MOZ_CONTAINER_H_

#ifdef MOZ_WAYLAND
#  include "mozilla/widget/MozContainerWayland.h"
#endif

#include <gtk/gtk.h>

/*
 * MozContainer
 *
 * This class serves three purposes in the nsIWidget implementation.
 *
 *   - It provides objects to receive signals from GTK for events on native
 *     windows.
 *
 *   - It provides GdkWindow to draw content on Wayland or when Gtk+ renders
 *     client side decorations to mShell.
 *
 *   - It provides a container parent for GtkEntry used for emoji selector.
 *
 * Note that the window hierarchy in Mozilla differs from conventional
 * GtkWidget hierarchies.
 *
 */

#define MOZ_CONTAINER_TYPE (moz_container_get_type())
#define MOZ_CONTAINER(obj) \
  (G_TYPE_CHECK_INSTANCE_CAST((obj), MOZ_CONTAINER_TYPE, MozContainer))
#define MOZ_CONTAINER_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_CAST((klass), MOZ_CONTAINER_TYPE, MozContainerClass))
#define IS_MOZ_CONTAINER(obj) \
  (G_TYPE_CHECK_INSTANCE_TYPE((obj), MOZ_CONTAINER_TYPE))
#define IS_MOZ_CONTAINER_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_TYPE((klass), MOZ_CONTAINER_TYPE))
#define MOZ_CONTAINER_GET_CLASS(obj) \
  (G_TYPE_INSTANCE_GET_CLASS((obj), MOZ_CONTAINER_TYPE, MozContainerClass))
#ifdef MOZ_WAYLAND
#  define MOZ_WL_CONTAINER(obj) (MOZ_CONTAINER(obj)->wl)
#  define MOZ_WL_SURFACE(obj) (MOZ_CONTAINER(obj)->wl->mSurface)
#endif

typedef struct _MozContainer MozContainer;
typedef struct _MozContainerClass MozContainerClass;

struct _MozContainer {
  GtkContainer container;
  gboolean destroyed;
  // Child widget is used for GtkEntry of emoji selector
  GtkWidget* entry_widget = nullptr;
#ifdef MOZ_WAYLAND
  MozContainerWayland* wl;
#endif
};

struct _MozContainerClass {
  GtkContainerClass parent_class;
};

namespace mozilla::widget {
class WaylandSurface;
}

GType moz_container_get_type(void);
GtkWidget* moz_container_new(void* aWindow,
                             mozilla::widget::WaylandSurface* aSurface);
void moz_container_unmap(GtkWidget* widget);
void moz_container_class_init(MozContainerClass* klass);

class nsWindow;
nsWindow* moz_container_get_nsWindow(MozContainer* container);

GtkWidget* moz_container_get_entry(MozContainer* container);
GtkWidget* moz_container_entry_set(MozContainer* container, GtkWidget* widget);
void moz_container_entry_position(MozContainer* container, int x, int y,
                                  int height);

#endif /* MOZ_CONTAINER_H_ */