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/*******************************************************************************
* Copyright (c) 2011 Frank Becker 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:
* Frank Becker - initial API and implementation
*******************************************************************************/
package org.eclipse.mylyn.commons.ui.dialogs;
import java.lang.reflect.InvocationTargetException;
import java.util.HashMap;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.jface.wizard.IWizard;
import org.eclipse.jface.wizard.WizardDialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
/**
* Wizard dialog for displaying additional button in the button bar. Based on ValidatableWizardDialog from Helen
* Bershadskaya
*
* @author Helen Bershadskaya
* @author Frank Becker
* @since 3.7
*/
public abstract class EnhancedWizardDialog extends WizardDialog {
private boolean isInFinish;
public EnhancedWizardDialog(Shell parentShell, IWizard newWizard) {
super(parentShell, newWizard);
}
abstract protected void createExtraButtons(Composite composite);
abstract protected void updateExtraButtons();
abstract protected boolean handleExtraButtonPressed(int buttonId);
abstract protected HashMap<String, Boolean> saveAndSetEnabledStateMylyn();
abstract protected void restoreEnabledStateMylyn(HashMap<String, Boolean> savedEnabledState);
/**
* Overridden so we can add a validate button to the wizard button bar, if a repository settings page requires it.
* Validate button is added left justified at button bar bottom (next to help image).
*/
@Override
protected Control createButtonBar(Composite parent) {
Composite composite = new Composite(parent, SWT.NONE);
GridLayout layout = new GridLayout();
layout.numColumns = 0; // create
layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
layout.marginWidth = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
layout.verticalSpacing = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
composite.setLayout(layout);
composite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
// create help control if needed
if (isHelpAvailable()) {
createHelpControl(composite);
}
createExtraButtons(composite);
Label filler = new Label(composite, SWT.NONE);
filler.setLayoutData(new GridData(GridData.FILL_HORIZONTAL | GridData.GRAB_HORIZONTAL));
((GridLayout) composite.getLayout()).numColumns++;
super.createButtonsForButtonBar(composite);
return composite;
}
/**
* Overridden so we can react to the validate button being pressed. This could have been done with a straight
* selection listener in the creation method above, but this is more consistent with how the other buttons work in
* the wizard dialog.
*
* @since 3.1
*/
@Override
protected void buttonPressed(int buttonId) {
if (!handleExtraButtonPressed(buttonId)) {
super.buttonPressed(buttonId);
}
}
@Override
protected void finishPressed() {
// ignore recursive calls
if (isInFinish) {
return;
}
try {
isInFinish = true;
super.finishPressed();
} finally {
isInFinish = false;
}
}
@Override
public void updateButtons() {
updateExtraButtons();
super.updateButtons();
}
/**
* Overridden to be able to set proper state for our validate button
*/
@Override
public void run(boolean fork, boolean cancelable, IRunnableWithProgress runnable) throws InvocationTargetException,
InterruptedException {
HashMap<String, Boolean> savedEnabledState = null;
try {
savedEnabledState = saveAndSetEnabledStateMylyn();
super.run(fork, cancelable, runnable);
} finally {
if (savedEnabledState != null) {
restoreEnabledStateMylyn(savedEnabledState);
}
}
}
}
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