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/* gtkclipboard.c
Copyright (C) 1998, 1999 Free Software Foundation, Inc.
This file is part of the peer AWT libraries of GNU Classpath.
This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Library General Public License as published
by the Free Software Foundation, either version 2 of the License, or
(at your option) any later verion.
This library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; if not, write to the Free Software Foundation
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307 USA. */
#include "gtkpeer.h"
#include "gnu_java_awt_peer_gtk_GtkClipboard.h"
jmethodID stringSelectionReceivedID;
jmethodID stringSelectionHandlerID;
jmethodID selectionClearID;
void selection_received (GtkWidget *, GtkSelectionData *, guint, gpointer);
void selection_get (GtkWidget *, GtkSelectionData *, guint, guint, gpointer);
gint selection_clear (GtkWidget *, GdkEventSelection *);
GtkWidget *clipboard;
jobject cb_obj;
JNIEXPORT void JNICALL
Java_gnu_java_awt_peer_gtk_GtkClipboard_initNativeState (JNIEnv *env,
jobject obj)
{
if (!stringSelectionReceivedID)
{
jclass gtkclipboard;
gtkclipboard = (*env)->FindClass (env,
"gnu/java/awt/peer/gtk/GtkClipboard");
stringSelectionReceivedID = (*env)->GetMethodID (env, gtkclipboard,
"stringSelectionReceived",
"(Ljava/lang/String;)V");
stringSelectionHandlerID = (*env)->GetMethodID (env, gtkclipboard,
"stringSelectionHandler",
"()Ljava/lang/String;");
selectionClearID = (*env)->GetMethodID (env, gtkclipboard,
"selectionClear", "()V");
}
cb_obj = (*env)->NewGlobalRef (env, obj);
gdk_threads_enter ();
clipboard = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_signal_connect (GTK_OBJECT(clipboard), "selection_received",
GTK_SIGNAL_FUNC (selection_received), NULL);
gtk_signal_connect (GTK_OBJECT(clipboard), "selection_clear_event",
GTK_SIGNAL_FUNC (selection_clear), NULL);
gtk_selection_add_target (clipboard, GDK_SELECTION_PRIMARY,
GDK_TARGET_STRING, GDK_TARGET_STRING);
gtk_signal_connect (GTK_OBJECT(clipboard), "selection_get",
GTK_SIGNAL_FUNC (selection_get), NULL);
gdk_threads_leave ();
}
JNIEXPORT void JNICALL
Java_gnu_java_awt_peer_gtk_GtkClipboard_requestStringConversion (JNIEnv *env,
jclass clazz)
{
gdk_threads_enter ();
gtk_selection_convert (clipboard, GDK_SELECTION_PRIMARY,
GDK_TARGET_STRING, GDK_CURRENT_TIME);
gdk_threads_leave ();
}
void
selection_received (GtkWidget *widget, GtkSelectionData *selection_data,
guint time, gpointer data)
{
/* Check to see if retrieval succeeded */
if (selection_data->length < 0
|| selection_data->type != GDK_SELECTION_TYPE_STRING)
{
(*gdk_env)->CallVoidMethod (gdk_env, cb_obj, stringSelectionReceivedID,
NULL);
}
else
{
char *str = (char *) selection_data->data;
(*gdk_env)->CallVoidMethod (gdk_env, cb_obj, stringSelectionReceivedID,
(*gdk_env)->NewStringUTF (gdk_env, str));
}
return;
}
void
selection_get (GtkWidget *widget,
GtkSelectionData *selection_data,
guint info,
guint time,
gpointer data)
{
jstring jstr;
const char *utf;
jsize utflen;
jstr = (*gdk_env)->CallObjectMethod (gdk_env, cb_obj,
stringSelectionHandlerID);
if (!jstr)
{
gtk_selection_data_set (selection_data,
GDK_TARGET_STRING, 8, NULL, 0);
return;
}
utflen = (*gdk_env)->GetStringUTFLength (gdk_env, jstr);
utf = (*gdk_env)->GetStringUTFChars (gdk_env, jstr, NULL);
gtk_selection_data_set (selection_data, GDK_TARGET_STRING, 8,
(char *)utf, utflen);
(*gdk_env)->ReleaseStringUTFChars (gdk_env, jstr, utf);
}
JNIEXPORT void JNICALL
Java_gnu_java_awt_peer_gtk_GtkClipboard_selectionGet (JNIEnv *env,
jclass clazz)
{
GdkWindow *owner;
gdk_threads_enter ();
/* if we already own the clipboard, we need to tell the old data object
that we're no longer going to be using him */
owner = gdk_selection_owner_get (GDK_SELECTION_PRIMARY);
if (owner && owner == clipboard->window)
(*env)->CallVoidMethod (env, cb_obj, selectionClearID);
gtk_selection_owner_set (clipboard, GDK_SELECTION_PRIMARY, GDK_CURRENT_TIME);
gdk_threads_leave ();
}
gint
selection_clear (GtkWidget *widget, GdkEventSelection *event)
{
(*gdk_env)->CallVoidMethod (gdk_env, cb_obj, selectionClearID);
return TRUE;
}
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