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/****************************************************************************
* Copyright (c) 2004 Composent, Inc. and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Composent, Inc. - initial API and implementation
*****************************************************************************/
package org.eclipse.ecf.internal.example.collab.ui;
import java.io.File;
import org.eclipse.ecf.core.identity.ID;
import org.eclipse.ecf.core.user.IUser;
import org.eclipse.swt.dnd.DND;
import org.eclipse.swt.dnd.DropTarget;
import org.eclipse.swt.dnd.DropTargetEvent;
import org.eclipse.swt.dnd.DropTargetListener;
import org.eclipse.swt.dnd.FileTransfer;
import org.eclipse.swt.dnd.TextTransfer;
import org.eclipse.swt.dnd.Transfer;
import org.eclipse.swt.widgets.Control;
class ChatDropTarget implements DropTargetListener {
private final LineChatClientView view;
DropTarget dropTarget = null;
TextTransfer textTransfer = null;
FileTransfer fileTransfer = null;
ChatComposite composite = null;
IUser selectedUser = null;
public ChatDropTarget(LineChatClientView view, Control control,
ChatComposite comp) {
dropTarget = new DropTarget(control, DND.DROP_MOVE | DND.DROP_COPY
| DND.DROP_DEFAULT);
this.view = view;
textTransfer = TextTransfer.getInstance();
fileTransfer = FileTransfer.getInstance();
Transfer[] types = new Transfer[] { fileTransfer, textTransfer };
dropTarget.setTransfer(types);
dropTarget.addDropListener(this);
composite = comp;
}
public void dragEnter(DropTargetEvent event) {
if (event.detail == DND.DROP_DEFAULT) {
if ((event.operations & DND.DROP_COPY) != 0) {
event.detail = DND.DROP_COPY;
} else {
event.detail = DND.DROP_NONE;
}
}
// will accept text but prefer to have files dropped
for (int i = 0; i < event.dataTypes.length; i++) {
if (fileTransfer.isSupportedType(event.dataTypes[i])) {
event.currentDataType = event.dataTypes[i];
// files should only be copied
if (event.detail != DND.DROP_COPY) {
event.detail = DND.DROP_NONE;
}
break;
}
}
}
public void dragOver(DropTargetEvent event) {
event.feedback = DND.FEEDBACK_SELECT | DND.FEEDBACK_SCROLL;
}
public void dragOperationChanged(DropTargetEvent event) {
if (event.detail == DND.DROP_DEFAULT) {
if ((event.operations & DND.DROP_COPY) != 0) {
event.detail = DND.DROP_COPY;
} else {
event.detail = DND.DROP_NONE;
}
}
// allow text to be moved but files should only be copied
if (fileTransfer.isSupportedType(event.currentDataType)) {
if (event.detail != DND.DROP_COPY) {
event.detail = DND.DROP_NONE;
}
}
}
public void dragLeave(DropTargetEvent event) {
}
public void dropAccept(DropTargetEvent event) {
}
public void drop(DropTargetEvent event) {
if (fileTransfer.isSupportedType(event.currentDataType)) {
String[] files = (String[]) event.data;
for (int i = 0; i < files.length; i++) {
ID target = (selectedUser == null) ? null : selectedUser
.getID();
// Send file to user
File file = new File(files[i]);
if (file.exists() && !file.isDirectory() && composite != null) {
composite.sendFile(file.getPath(), this.view.downloaddir
+ File.separatorChar + file.getName(), null,
target, false);
}
}
}
}
}
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