com.sun.glass.ui.win.WinDnDClipboard Maven / Gradle / Ivy
/*
* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package com.sun.glass.ui.win;
final class WinDnDClipboard extends WinSystemClipboard {
public WinDnDClipboard(String name) {
super(name);
}
@Override protected void create() {}
@Override protected native void dispose();
@Override protected boolean isOwner() {
return getDragButton() != 0;
}
@Override protected void pushTargetActionToSystem(int actionDone) {
throw new UnsupportedOperationException(
"[Target Action] not supported! Override View.handleDragDrop instead.");
}
/*
* public mime types to system clipboard
*/
@Override protected native void push(Object[] keys, int supportedActions);
/*
* extract clipboard snap-shot
*/
@Override protected boolean pop() {
//The DnD buffer ownership coild not be suddenly changed
//while active DnD operation.
return getPtr() != 0L;
}
/*
* called from native
*/
private static WinDnDClipboard getInstance() {
return (WinDnDClipboard)get(DND);
}
@Override public String toString() {
return "Windows DnD Clipboard";
}
/*
* The MouseEvent.BUTTON_XXXX const if Java is DnD source.
*
* This field is static because at any point of time there may be only one
* active DnD operation in the system, let alone a single Glass
* application instance. The setter and getter methods should be static.
*/
private static int dragButton = 0;
public int getDragButton() {
return dragButton;
}
/*
* Called from native code
*/
private void setDragButton(int dragButton) {
this.dragButton = dragButton;
}
/*
* The Clipboard.ACTION_XXXX const if Java is DnD target.
*/
private int sourceSupportedActions = 0;
@Override protected final int supportedSourceActionsFromSystem() {
return sourceSupportedActions != 0
? sourceSupportedActions //an old style (from DnD call back)
: super.supportedSourceActionsFromSystem(); //new Explorer-like style
}
/*
* Called from native code
*/
private void setSourceSupportedActions(int sourceSupportedActions) {
this.sourceSupportedActions = sourceSupportedActions;
}
}