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/*******************************************************************************
* Copyright (c) 2012 Wind River Systems, 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tcf.te.tcf.filesystem.ui.internal.adapters;
import java.util.List;
import java.util.UUID;
import org.eclipse.core.runtime.Assert;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.tcf.te.runtime.interfaces.callback.ICallback;
import org.eclipse.tcf.te.runtime.interfaces.properties.IPropertiesContainer;
import org.eclipse.tcf.te.tcf.filesystem.core.interfaces.IConfirmCallback;
import org.eclipse.tcf.te.tcf.filesystem.core.internal.operations.IOpExecutor;
import org.eclipse.tcf.te.tcf.filesystem.core.internal.operations.OpDelete;
import org.eclipse.tcf.te.tcf.filesystem.core.model.FSTreeNode;
import org.eclipse.tcf.te.tcf.filesystem.ui.activator.UIPlugin;
import org.eclipse.tcf.te.tcf.filesystem.ui.internal.ImageConsts;
import org.eclipse.tcf.te.tcf.filesystem.ui.internal.operations.UiExecutor;
import org.eclipse.tcf.te.tcf.filesystem.ui.nls.Messages;
import org.eclipse.tcf.te.ui.views.interfaces.handler.IDeleteHandlerDelegate;
import org.eclipse.ui.PlatformUI;
/**
* File System tree node delete handler delegate implementation.
*/
public class DeleteHandlerDelegate implements IDeleteHandlerDelegate {
// The key to access the selection in the state.
private static final String KEY_SELECTION = "selection"; //$NON-NLS-1$
// The key to access the processed state in the state.
private static final String KEY_PROCESSED = "processed"; //$NON-NLS-1$
// The deletion confirmation callback
private IConfirmCallback confirmCallback;
// The confirmation call for read only files.
private IConfirmCallback readonlyCallback;
/**
* Constructor
*/
public DeleteHandlerDelegate() {
confirmCallback = new DeletionConfirmCallback();
readonlyCallback = new ReadOnlyConfirmCallback();
}
/**
* Set the confirmation callback
*
* @param confirmCallback The confirmation callback
*/
public void setConfirmCallback(IConfirmCallback confirmCallback) {
this.confirmCallback = confirmCallback;
}
/*
* (non-Javadoc)
* @see org.eclipse.tcf.te.ui.views.interfaces.handler.IDeleteHandlerDelegate#canDelete(java.lang.Object)
*/
@Override
public boolean canDelete(Object element) {
if (element instanceof FSTreeNode) {
FSTreeNode node = (FSTreeNode) element;
if (!node.isSystemRoot() && !node.isRoot()) {
return node.isWindowsNode() && !node.isReadOnly()
|| !node.isWindowsNode() && node.isWritable();
}
}
return false;
}
/*
* (non-Javadoc)
* @see org.eclipse.tcf.te.ui.views.interfaces.handler.IDeleteHandlerDelegate#delete(java.lang.Object, org.eclipse.tcf.te.runtime.interfaces.properties.IPropertiesContainer, org.eclipse.tcf.te.runtime.interfaces.callback.ICallback)
*/
@Override
public void delete(Object element, IPropertiesContainer state, ICallback callback) {
Assert.isNotNull(element);
Assert.isNotNull(state);
UUID lastProcessed = (UUID) state.getProperty(KEY_PROCESSED);
if (lastProcessed == null || !lastProcessed.equals(state.getUUID())) {
state.setProperty(KEY_PROCESSED, state.getUUID());
if(confirmCallback != null) {
IStructuredSelection selection = (IStructuredSelection) state.getProperty(KEY_SELECTION);
if(!confirmCallback.requires(selection) || confirmCallback.confirms(selection) == IConfirmCallback.YES) {
List<FSTreeNode> nodes = selection.toList();
IOpExecutor executor = new UiExecutor(callback);
executor.execute(new OpDelete(nodes, readonlyCallback));
}
}
}
}
static class ReadOnlyConfirmCallback implements IConfirmCallback {
/*
* (non-Javadoc)
* @see org.eclipse.tcf.te.tcf.filesystem.core.interfaces.IConfirmCallback#requires(java.lang.Object)
*/
@Override
public boolean requires(Object object) {
if(object instanceof FSTreeNode) {
FSTreeNode node = (FSTreeNode) object;
return node.isWindowsNode() && node.isReadOnly() || !node.isWindowsNode() && !node.isWritable();
}
return false;
}
/*
* (non-Javadoc)
* @see org.eclipse.tcf.te.tcf.filesystem.core.interfaces.IConfirmCallback#confirms(java.lang.Object)
*/
@Override
public int confirms(Object object) {
final FSTreeNode node = (FSTreeNode) object;
final int[] results = new int[1];
Display display = PlatformUI.getWorkbench().getDisplay();
display.syncExec(new Runnable() {
@Override
public void run() {
Shell parent = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell();
String title = Messages.FSDelete_ConfirmDelete;
String message = NLS.bind(Messages.FSDelete_ConfirmMessage, node.name);
final Image titleImage = UIPlugin.getImage(ImageConsts.DELETE_READONLY_CONFIRM);
MessageDialog qDialog = new MessageDialog(parent, title, null, message, MessageDialog.QUESTION, new String[] { Messages.FSDelete_ButtonYes, Messages.FSDelete_ButtonYes2All, Messages.FSDelete_ButtonNo, Messages.FSDelete_ButtonCancel }, 0) {
@Override
public Image getQuestionImage() {
return titleImage;
}
};
results[0] = qDialog.open();
}
});
return results[0];
}
}
static class DeletionConfirmCallback implements IConfirmCallback {
/*
* (non-Javadoc)
* @see org.eclipse.tcf.te.tcf.filesystem.core.interfaces.IConfirmCallback#requires(java.lang.Object)
*/
@Override
public boolean requires(Object object) {
return true;
}
/*
* (non-Javadoc)
* @see org.eclipse.tcf.te.tcf.filesystem.interfaces.IConfirmCallback#confirms(java.lang.Object)
*/
@Override
public int confirms(Object object) {
IStructuredSelection selection = (IStructuredSelection) object;
List<FSTreeNode> nodes = selection.toList();
String question;
if (nodes.size() == 1) {
FSTreeNode node = nodes.get(0);
question = NLS.bind(Messages.DeleteFilesHandler_DeleteOneFileConfirmation, node.name);
}
else {
question = NLS.bind(Messages.DeleteFilesHandler_DeleteMultipleFilesConfirmation, Integer.valueOf(nodes.size()));
}
Shell parent = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell();
if (MessageDialog.openQuestion(parent, Messages.DeleteFilesHandler_ConfirmDialogTitle, question)) {
return IConfirmCallback.YES;
}
return IConfirmCallback.NO;
}
}
}
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