mu/toys/mug/mug-query-bar.c

/* mug-query-bar.c */

/* insert (c)/licensing information) */

#include "mug-query-bar.h"
/* include other impl specific header files */

/* 'private'/'protected' functions */
static void mug_query_bar_class_init(MugQueryBarClass * klass);
static void mug_query_bar_init(MugQueryBar * obj);
static void mug_query_bar_finalize(GObject * obj);

/* list my signals  */
enum {
	MUG_QUERY_CHANGED,
	LAST_SIGNAL
};

typedef struct _MugQueryBarPrivate MugQueryBarPrivate;
struct _MugQueryBarPrivate {
	GtkWidget *_entry;
};
#define MUG_QUERY_BAR_GET_PRIVATE(o)      (G_TYPE_INSTANCE_GET_PRIVATE((o), \
                                           MUG_TYPE_QUERY_BAR, \
                                           MugQueryBarPrivate))
/* globals */
static GtkContainerClass *parent_class = NULL;

static guint signals[LAST_SIGNAL] = { 0 };

GType mug_query_bar_get_type(void)
{
	static GType my_type = 0;
	if (!my_type) {
		static const GTypeInfo my_info = {
			sizeof(MugQueryBarClass),
			NULL,	/* base init */
			NULL,	/* base finalize */
			(GClassInitFunc) mug_query_bar_class_init,
			NULL,	/* class finalize */
			NULL,	/* class data */
			sizeof(MugQueryBar),
			0,	/* n_preallocs, ignored since 2.10 */
			(GInstanceInitFunc) mug_query_bar_init,
			NULL
		};
		my_type = g_type_register_static(GTK_TYPE_HBOX,
						 "MugQueryBar", &my_info, 0);
	}
	return my_type;
}

static void mug_query_bar_class_init(MugQueryBarClass * klass)
{
	GObjectClass *gobject_class;
	gobject_class = (GObjectClass *) klass;

	parent_class = g_type_class_peek_parent(klass);
	gobject_class->finalize = mug_query_bar_finalize;

	g_type_class_add_private(gobject_class, sizeof(MugQueryBarPrivate));

	/* signal definitions go here, e.g.: */
	signals[MUG_QUERY_CHANGED] =
	    g_signal_new("query_changed",
			 G_TYPE_FROM_CLASS(gobject_class),
			 G_SIGNAL_RUN_FIRST,
			 G_STRUCT_OFFSET(MugQueryBarClass, query_changed),
			 NULL, NULL,
			 g_cclosure_marshal_VOID__STRING,
			 G_TYPE_NONE, 1, G_TYPE_STRING);
}

static void on_entry_activated(GtkWidget * w, MugQueryBar * bar)
{
	MugQueryBarPrivate *priv;

	priv = MUG_QUERY_BAR_GET_PRIVATE(bar);

	g_signal_emit(G_OBJECT(bar), signals[MUG_QUERY_CHANGED], 0,
		      gtk_entry_get_text(GTK_ENTRY(w)));
}

static void mug_query_bar_init(MugQueryBar * obj)
{
	MugQueryBarPrivate *priv;

	priv = MUG_QUERY_BAR_GET_PRIVATE(obj);

	priv->_entry = gtk_entry_new();

	g_signal_connect(priv->_entry, "activate",
			 G_CALLBACK(on_entry_activated), obj);

	gtk_box_pack_start(GTK_BOX(obj), priv->_entry, TRUE, TRUE, 0);
}

static void mug_query_bar_finalize(GObject * obj)
{
/* 	free/unref instance resources here */
	G_OBJECT_CLASS(parent_class)->finalize(obj);
}

GtkWidget *mug_query_bar_new(void)
{
	return GTK_WIDGET(g_object_new(MUG_TYPE_QUERY_BAR, NULL));
}

void
mug_query_bar_set_query(MugQueryBar * self, const char *query, gboolean run)
{
	MugQueryBarPrivate *priv;

	g_return_if_fail(MUG_IS_QUERY_BAR(self));
	priv = MUG_QUERY_BAR_GET_PRIVATE(self);

	gtk_entry_set_text(GTK_ENTRY(priv->_entry), query ? query : "");

	if (run)
		on_entry_activated(priv->_entry, self);
}

void mug_query_bar_grab_focus(MugQueryBar * self)
{
	g_return_if_fail(MUG_IS_QUERY_BAR(self));

	gtk_widget_grab_focus
	    (GTK_WIDGET(MUG_QUERY_BAR_GET_PRIVATE(self)->_entry));
}