#include <jni.h>
#include <stdio.h>
#include <jni_util.h>
#include <string.h>
#include "gtk2_interface.h"
#include "sun_awt_X11_GtkDirectoryDialogPeer.h"

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

/* To cache some method IDs */
static jmethodID setDirectoryInternalMethodID = NULL;

/*
 * Class:     sun_awt_X11_GtkDirectoryDialogPeer
 * Method:    quit
 * Signature: ()V
 */
JNIEXPORT void JNICALL Java_sun_awt_X11_GtkDirectoryDialogPeer_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;
    char *current_folder;
    jclass cx;
    jstring jcurrent_folder;

    env = (JNIEnv *) JNU_GetEnv(jvm, JNI_VERSION_1_2);
    current_folder = NULL;

    if (responseId == GTK_RESPONSE_ACCEPT) {
        current_folder = fp_gtk_file_chooser_get_current_folder(
                GTK_FILE_CHOOSER(dialog));
    }

    if (setDirectoryInternalMethodID == NULL) {
        cx = (*env)->GetObjectClass(env, (jobject) obj);
        if (cx == NULL) {
            JNU_ThrowInternalError(env, "Could not get GTK peer class");
            return;
        }

        setDirectoryInternalMethodID = (*env)->GetMethodID(env, cx,
                "setDirectoryInternal", "(Ljava/lang/String;)V");
        if (setDirectoryInternalMethodID == NULL) {
            JNU_ThrowInternalError(env,
                    "Could not get setDirectoryInternalMethodID method id");
            return;
        }
    }

    jcurrent_folder = (*env)->NewStringUTF(env, current_folder);

    (*env)->CallVoidMethod(env, obj, setDirectoryInternalMethodID, jcurrent_folder);
    fp_g_free(current_folder);

    Java_sun_awt_X11_GtkDirectoryDialogPeer_quit(NULL, NULL);
}

/*
 * Class:     sun_awt_X11_GtkDirectoryDialogPeer
 * Method:    run
 * Signature: (Ljava/lang/String;ILjava/lang/String;)V
 */
JNIEXPORT void JNICALL
Java_sun_awt_X11_GtkDirectoryDialogPeer_run(JNIEnv * env, jobject jpeer,
        jstring jtitle, jstring jdir)
{
    if (jvm == NULL) {
        (*env)->GetJavaVM(env, &jvm);
    }

    fp_gdk_threads_init();
    fp_gdk_threads_enter();

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

    /* Action SELECT_FOLDER */
    dialog = fp_gtk_file_chooser_dialog_new(title, NULL,
            GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER, 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);
    }

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

    fp_gtk_main();
    fp_gdk_threads_leave();
}