/*******************************************************************************
* Copyright (c) 2000, 2007 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
* Sebastian Davids <sdavids@gmx.de> - Fix for bug 19346 - Dialog font should be
* activated and used by other components.
*******************************************************************************/
package org.eclipse.ui.internal.dialogs;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Map;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableItem;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.internal.IWorkbenchGraphicConstants;
import org.eclipse.ui.internal.IWorkbenchHelpContextIds;
import org.eclipse.ui.internal.WorkbenchImages;
import org.eclipse.ui.internal.WorkbenchMessages;
import org.eclipse.ui.internal.WorkbenchPlugin;
import org.eclipse.ui.internal.registry.WorkingSetDescriptor;
/**
* The working set type page is used in the new working set
* wizard to select from a list of plugin defined working set
* types.
*
* @since 2.0
*/
public class WorkingSetTypePage extends WizardPage {
private final static int SIZING_SELECTION_WIDGET_WIDTH = 50;
private final static int SIZING_SELECTION_WIDGET_HEIGHT = 200;
private TableViewer typesListViewer;
private Map icons;
private WorkingSetDescriptor[] descriptors;
/**
* Creates a new instance of the receiver
*/
public WorkingSetTypePage() {
this(WorkbenchPlugin.getDefault().getWorkingSetRegistry().getNewPageWorkingSetDescriptors());
}
/**
* @param descriptors a set of working set descriptors which can be selected on the page
*/
public WorkingSetTypePage(WorkingSetDescriptor[] descriptors) {
super(
"workingSetTypeSelectionPage", WorkbenchMessages.Select, WorkbenchImages.getImageDescriptor(IWorkbenchGraphicConstants.IMG_WIZBAN_WORKINGSET_WIZ)); //$NON-NLS-1$
setDescription(WorkbenchMessages.WorkingSetTypePage_description);
icons = new Hashtable();
this.descriptors= descriptors;
}
/**
* Overrides method in WizardPage
*
* @see org.eclipse.jface.wizard.IWizardPage#canFlipToNextPage()
*/
public boolean canFlipToNextPage() {
return isPageComplete();
}
/**
* Populates the working set types list.
*/
private void createContent() {
Table table = (Table) typesListViewer.getControl();
for (int i = 0; i < descriptors.length; i++) {
TableItem tableItem = new TableItem(table, SWT.NULL);
ImageDescriptor imageDescriptor = descriptors[i].getIcon();
if (imageDescriptor != null) {
Image icon = (Image) icons.get(imageDescriptor);
if (icon == null) {
icon = imageDescriptor.createImage();
icons.put(imageDescriptor, icon);
}
tableItem.setImage(icon);
}
tableItem.setText(descriptors[i].getName());
tableItem.setData(descriptors[i]);
}
}
/**
* Implements IDialogPage
*
* @see org.eclipse.jface.dialogs.IDialogPage#createControl(Composite)
*/
public void createControl(Composite parent) {
Font font = parent.getFont();
Composite composite = new Composite(parent, SWT.NULL);
composite.setLayout(new GridLayout());
composite.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
setControl(composite);
PlatformUI.getWorkbench().getHelpSystem().setHelp(composite,
IWorkbenchHelpContextIds.WORKING_SET_TYPE_PAGE);
Label typesLabel = new Label(composite, SWT.NONE);
typesLabel.setText(WorkbenchMessages.WorkingSetTypePage_typesLabel);
GridData data = new GridData(GridData.FILL_HORIZONTAL);
typesLabel.setLayoutData(data);
typesLabel.setFont(font);
typesListViewer = new TableViewer(composite, SWT.BORDER | SWT.MULTI);
data = new GridData(GridData.FILL_BOTH);
data.heightHint = SIZING_SELECTION_WIDGET_HEIGHT;
data.widthHint = SIZING_SELECTION_WIDGET_WIDTH;
typesListViewer.getTable().setLayoutData(data);
typesListViewer.getTable().setFont(font);
typesListViewer
.addSelectionChangedListener(new ISelectionChangedListener() {
public void selectionChanged(SelectionChangedEvent event) {
handleSelectionChanged();
}
});
typesListViewer.addDoubleClickListener(new IDoubleClickListener() {
public void doubleClick(DoubleClickEvent event) {
handleDoubleClick();
}
});
createContent();
setPageComplete(false);
}
/**
* Overrides method in DialogPage
*
* @see org.eclipse.jface.dialogs.IDialogPage#dispose()
*/
public void dispose() {
Iterator iterator = icons.values().iterator();
while (iterator.hasNext()) {
Image icon = (Image) iterator.next();
icon.dispose();
}
super.dispose();
}
/**
* Returns the page id of the selected working set type.
*
* @return the page id of the selected working set type.
*/
public String getSelection() {
ISelection selection = typesListViewer.getSelection();
boolean hasSelection = selection != null
&& selection.isEmpty() == false;
if (hasSelection && selection instanceof IStructuredSelection) {
WorkingSetDescriptor workingSetDescriptor = (WorkingSetDescriptor) ((IStructuredSelection) selection)
.getFirstElement();
return workingSetDescriptor.getId();
}
return null;
}
/**
* Called when a working set type is double clicked.
*/
private void handleDoubleClick() {
handleSelectionChanged();
getContainer().showPage(getNextPage());
}
/**
* Called when the selection has changed.
*/
private void handleSelectionChanged() {
ISelection selection = typesListViewer.getSelection();
boolean hasSelection = selection != null
&& selection.isEmpty() == false;
setPageComplete(hasSelection);
}
}