/*******************************************************************************
* Copyright (c) 2005, 2006 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.team.internal.ui.dialogs;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.window.IShellProvider;
import org.eclipse.swt.widgets.Shell;
/**
* This class provides a Yes/No prompter that can be used for multiple questions
* during the same operation. It can be used for a single prompt (in which case
* OK and Cancel are presented) or multiple (in which case Yes, Yes to All, No
* and No to All are presented). It uses the previous selection as appropriate.
*/
public class MultipleYesNoPrompter {
private static final int ALWAYS_ASK = 0;
private static final int YES_TO_ALL = 1;
private static final int NO_TO_ALL = 2;
private String[] buttons;
private int confirmation = ALWAYS_ASK;
private String title;
private boolean hasMultiple;
private boolean allOrNothing;
private IShellProvider shellProvider;
/**
* Prompt for the given resources using the specific condition. The prompt dialog will
* have the title specified.
*/
public MultipleYesNoPrompter(IShellProvider provider, String title, boolean hasMultiple, boolean allOrNothing) {
this.title = title;
this.shellProvider = provider;
this.hasMultiple = hasMultiple;
this.allOrNothing = allOrNothing;
if (hasMultiple) {
if (allOrNothing) {
buttons = new String[] {
IDialogConstants.YES_LABEL,
IDialogConstants.YES_TO_ALL_LABEL,
IDialogConstants.CANCEL_LABEL};
} else {
buttons = new String[] {
IDialogConstants.YES_LABEL,
IDialogConstants.YES_TO_ALL_LABEL,
IDialogConstants.NO_LABEL,
IDialogConstants.NO_TO_ALL_LABEL,
IDialogConstants.CANCEL_LABEL};
}
} else {
buttons = new String[] {IDialogConstants.OK_LABEL, IDialogConstants.CANCEL_LABEL};
}
}
/**
* Return whether the given resource should be included in the
* target set.
* @param message the message
* @return whether the resource should be included
* @throws InterruptedException if the user choose to cancel
*/
public boolean shouldInclude(String message) throws InterruptedException {
if (confirmation == YES_TO_ALL) {
return true;
} else {
switch (confirmation) {
case ALWAYS_ASK: {
// This call has the nasty side effect of changing the
// instance scoped "confirmation"
if (confirmOverwrite(message)) {
return true;
}
break;
}
case YES_TO_ALL: {
return true;
}
case NO_TO_ALL: {
// Don't overwrite
break;
}
}
// If we get here, the user said no or not_to_all.
return false;
}
}
/**
* Opens the confirmation dialog based on the prompt condition settings.
*/
private boolean confirmOverwrite(String msg) throws InterruptedException {
Shell shell = shellProvider.getShell();
if (shell == null) return false;
final MessageDialog dialog =
new MessageDialog(shell, title, null, msg, MessageDialog.QUESTION, buttons, 0);
// run in syncExec because callback is from an operation,
// which is probably not running in the UI thread.
shell.getDisplay().syncExec(
new Runnable() {
public void run() {
dialog.open();
}
});
if (hasMultiple) {
switch (dialog.getReturnCode()) {
case 0://Yes
return true;
case 1://Yes to all
confirmation = YES_TO_ALL;
return true;
case 2://No (or CANCEL for all-or-nothing)
if (allOrNothing) {
throw new InterruptedException();
}
return false;
case 3://No to all
confirmation = NO_TO_ALL;
return false;
case 4://Cancel
default:
throw new InterruptedException();
}
} else {
return dialog.getReturnCode() == 0;
}
}
public void setTitle(String title) {
this.title = title;
}
}
