#include <jni.h>
#include <stdio.h>
#include "gtk2_interface.h"
#include "sun_awt_X11_GtkFileDialogPeer.h"

static JavaVM *jvm;
static GtkWidget *dialog = NULL;

// In order to Cache some method IDs
static jmethodID filenameFilterCallbackMethodID = NULL;
static jmethodID setFileInternalMethodID = NULL;

static gboolean filenameFilterCallback(const GtkFileFilterInfo * filter_info,
		gpointer obj)
{
	JNIEnv *env = (JNIEnv *) JNU_GetEnv(jvm, JNI_VERSION_1_2);

	if (filenameFilterCallbackMethodID == NULL) {
		jclass cx = (*env)->GetObjectClass(env, (jobject) obj);
		filenameFilterCallbackMethodID = (*env)->GetMethodID(env, cx,
				"filenameFilterCallback", "(Ljava/lang/String;)Z");
	}

	jstring filename = (*env)->NewStringUTF(env, filter_info->filename);

	return (*env)->CallBooleanMethod(env, obj, filenameFilterCallbackMethodID,
			filename);
}

/*
 * Class:     sun_awt_X11_GtkFileDialogPeer
 * Method:    hide
 * Signature: ()V
 */
JNIEXPORT void JNICALL Java_sun_awt_X11_GtkFileDialogPeer_quit
(JNIEnv * env, jobject jpeer)
{
	if (dialog != NULL)
	{
		fp_gtk_widget_hide (dialog);
		fp_gtk_widget_destroy (dialog);

		fp_gtk_main_quit ();
		dialog = NULL;
	}
}

static void handle_response(GtkWidget * aDialog, gint responseId, gpointer obj)
{
	JNIEnv *env = (JNIEnv *) JNU_GetEnv(jvm, JNI_VERSION_1_2);

	char *filename = NULL;

	if (responseId == GTK_RESPONSE_ACCEPT) {
		filename = fp_gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(aDialog));
	}

	if (setFileInternalMethodID == NULL) {
		jclass cx = (*env)->GetObjectClass(env, (jobject) obj);
		setFileInternalMethodID = (*env)->GetMethodID(env, cx,
				"setFileInternal", "(Ljava/lang/String;)V");
	}

	jstring jfilename = (*env)->NewStringUTF(env, filename);

	(*env)->CallVoidMethod(env, obj, setFileInternalMethodID, jfilename);
	fp_g_free(filename);

	Java_sun_awt_X11_GtkFileDialogPeer_quit(NULL, NULL);
}

/*
 * Class:     sun_awt_X11_GtkFileDialogPeer
 * Method:    show
 * Signature: (Ljava/lang/String;ILjava/lang/String;Ljava/lang/String;Ljava/io/FilenameFilter;)V
 */
JNIEXPORT void JNICALL
Java_sun_awt_X11_GtkFileDialogPeer_run(JNIEnv * env, jobject jpeer,
		jstring jtitle, jint mode, jstring jdir, jstring jfile, jobject jfilter)
{
	if (jvm == NULL) {
		(*env)->GetJavaVM(env, &jvm);
	}

	const char *title = (*env)->GetStringUTFChars(env, jtitle, 0);

	if (mode == 1) {
		// Save action
		dialog = fp_gtk_file_chooser_dialog_new(title, NULL,
				GTK_FILE_CHOOSER_ACTION_SAVE, GTK_STOCK_CANCEL,
				GTK_RESPONSE_CANCEL, GTK_STOCK_SAVE, GTK_RESPONSE_ACCEPT, NULL);
	} else {
		// Default action OPEN
		dialog = fp_gtk_file_chooser_dialog_new(title, NULL,
				GTK_FILE_CHOOSER_ACTION_OPEN, GTK_STOCK_CANCEL,
				GTK_RESPONSE_CANCEL, GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT, NULL);
	}

	(*env)->ReleaseStringUTFChars(env, jtitle, title);

	// Set the directory
	if (jdir != NULL) {
		const char *dir = (*env)->GetStringUTFChars(env, jdir, 0);
		fp_gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(dialog), dir);
		(*env)->ReleaseStringUTFChars(env, jdir, dir);
	}

	// Set the filename
	if (jfile != NULL) {
		const char *filename = (*env)->GetStringUTFChars(env, jfile, 0);
		fp_gtk_file_chooser_set_filename(GTK_FILE_CHOOSER(dialog), filename);
		(*env)->ReleaseStringUTFChars(env, jfile, filename);
	}

	// Set the file filter
	if (jfilter != NULL) {
		GtkFileFilter *filter;
		filter = fp_gtk_file_filter_new();
		fp_gtk_file_filter_add_custom(filter, GTK_FILE_FILTER_FILENAME,
				filenameFilterCallback, jpeer, NULL);
		fp_gtk_file_chooser_set_filter(GTK_FILE_CHOOSER(dialog), filter);
	}

	//Other Properties
	if (fp_gtk_check_version(2, 8, 0) == NULL) {
		fp_gtk_file_chooser_set_do_overwrite_confirmation(GTK_FILE_CHOOSER(
				dialog), TRUE);
	}

	fp_g_signal_connect(G_OBJECT(dialog), "response", G_CALLBACK(
			handle_response), jpeer);
	fp_gtk_widget_show(dialog);

	fp_gdk_threads_enter();
	fp_gtk_main();
	fp_gdk_threads_leave();
}