/*
 * Copyright 2016 (c) Anna Schumaker.
 */
#ifndef OCARINA_GUI_MODEL_H
#define OCARINA_GUI_MODEL_H
#include <core/playlist.h>
#include <gui/builder.h>
#include <gtk/gtk.h>

#define GUI_MODEL(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), \
			gui_model_get_type(), GuiModel))

enum gui_model_columns {
	GUI_MODEL_TRACK_NR,
	GUI_MODEL_TITLE,
	GUI_MODEL_LENGTH,
	GUI_MODEL_ARTIST,
	GUI_MODEL_ALBUM,
	GUI_MODEL_YEAR,
	GUI_MODEL_GENRE,
	GUI_MODEL_COUNT,
	GUI_MODEL_LAST_PLAY,
	GUI_MODEL_FILE_PATH,
	GUI_MODEL_FONT,
	GUI_MODEL_N_COLUMNS,
};


struct gui_model {
	GObject gm_parent; /* This MUST be the first member.       */
	gint    gm_stamp;  /* This is used to check iter validity. */
};
typedef struct gui_model GuiModel;


struct gui_model_class {
	GObjectClass parent_class;
};
typedef struct gui_model_class GuiModelClass;

struct gui_model_drag_data {
	unsigned int  drag_row;
	struct track *drag_track;
};

#define GUI_DRAG_DATA "GUI_DRAG_DATA"

extern const GtkTargetEntry gui_model_drag_targets[];
extern const unsigned int gui_model_n_targets;

/* Called to initialize the GuiModel */
void gui_model_init(void);

/* Called to deinitialize the GuiModel */
void gui_model_deinit(void);

/* Called to get the GuiModel */
GuiModel *gui_model_get(void);

/* Called to find the GType of the GuiModel */
GType gui_model_get_type();

/* Called to add a row to the model */
void gui_model_add(struct playlist *, struct track *);

/* Called to remove a row from the model */
void gui_model_remove(struct playlist *, struct track *, unsigned int);

/*
 * Called to update a row in the model
 * If track is NULL, then all rows will be updated
 */
void gui_model_update(struct playlist *, struct track *);

/* Called to change the queue represented by the model. */
void gui_model_set_playlist(struct playlist *);

/* Called to get the queue currently attached to the model. */
struct playlist *gui_model_get_playlist(void);


/* Called to convert a GtkTreeIter into a struct track */
static inline struct track *gui_model_iter_get_track(GtkTreeIter *iter)
{
	g_return_val_if_fail(iter != NULL, NULL);
	g_return_val_if_fail(iter->user_data != NULL, NULL);
	return playlist_iter_track(iter->user_data);
}

/* Called to convert a GtkTreePath into a struct track */
struct track *gui_model_path_get_track(GtkTreePath *);

/* Called to get the runtime label. */
static inline GtkLabel *gui_model_runtime()
{
	return GTK_LABEL(gui_builder_widget("runtime"));
}

#endif /* OCARINA_GUI_MODEL_H */