/*******************************************************************************
* Copyright (c) 2000, 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.ui.internal.dialogs;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.ViewerComparator;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.IPerspectiveDescriptor;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.internal.IWorkbenchHelpContextIds;
import org.eclipse.ui.internal.WorkbenchMessages;
import org.eclipse.ui.internal.activities.ws.ActivityViewerFilter;
import org.eclipse.ui.internal.registry.PerspectiveRegistry;
import org.eclipse.ui.model.PerspectiveLabelProvider;
/**
* The SavePerspectiveDialog can be used to get the name of a new
* perspective or the descriptor of an old perspective. The results
* are returned by <code>getNewPerspName</code> and
* <code>getOldPersp</code>.
*/
public class SavePerspectiveDialog extends org.eclipse.jface.dialogs.Dialog
implements ISelectionChangedListener, ModifyListener {
private Text text;
private TableViewer list;
private Button okButton;
private PerspectiveRegistry perspReg;
private String perspName;
private IPerspectiveDescriptor persp;
private IPerspectiveDescriptor initialSelection;
private boolean ignoreSelection = false;
final private static int LIST_WIDTH = 40;
final private static int TEXT_WIDTH = 40;
final private static int LIST_HEIGHT = 14;
/**
* PerspectiveDialog constructor comment.
* @param parentShell the parent shell
* @param perspReg the perspective registry
*/
public SavePerspectiveDialog(Shell parentShell, PerspectiveRegistry perspReg) {
super(parentShell);
this.perspReg = perspReg;
}
/* (non-Javadoc)
* Method declared in Window.
*/
protected void configureShell(Shell shell) {
super.configureShell(shell);
shell
.setText(WorkbenchMessages.SavePerspective_shellTitle);
PlatformUI.getWorkbench().getHelpSystem().setHelp(shell,
IWorkbenchHelpContextIds.SAVE_PERSPECTIVE_DIALOG);
}
/**
* Add buttons to the dialog's button bar.
*
* @param parent the button bar composite
*/
protected void createButtonsForButtonBar(Composite parent) {
okButton = createButton(parent, IDialogConstants.OK_ID,
IDialogConstants.OK_LABEL, true);
createButton(parent, IDialogConstants.CANCEL_ID,
IDialogConstants.CANCEL_LABEL, false);
updateButtons();
text.setFocus();
}
/**
* Creates and returns the contents of the upper part
* of this dialog (above the button bar).
*
* @param parent the parent composite to contain the dialog area
* @return the dialog area control
*/
protected Control createDialogArea(Composite parent) {
Font font = parent.getFont();
// Run super.
Composite composite = (Composite) super.createDialogArea(parent);
// description
Label descLabel = new Label(composite, SWT.WRAP);
descLabel.setText(WorkbenchMessages.SavePerspectiveDialog_description);
descLabel.setFont(parent.getFont());
// Spacer.
Label label = new Label(composite, SWT.NONE);
GridData data = new GridData();
data.heightHint = 8;
label.setLayoutData(data);
// Create name group.
Composite nameGroup = new Composite(composite, SWT.NONE);
nameGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
GridLayout layout = new GridLayout();
layout.numColumns = 2;
layout.marginWidth = layout.marginHeight = 0;
nameGroup.setLayout(layout);
// Create name label.
label = new Label(nameGroup, SWT.NONE);
label.setText(WorkbenchMessages.SavePerspective_name);
label.setFont(font);
// Add text field.
text = new Text(nameGroup, SWT.BORDER);
text.setFocus();
data = new GridData(GridData.FILL_HORIZONTAL);
data.widthHint = convertWidthInCharsToPixels(TEXT_WIDTH);
text.setLayoutData(data);
text.setFont(font);
text.addModifyListener(this);
// Spacer.
label = new Label(composite, SWT.NONE);
data = new GridData();
data.heightHint = 5;
label.setLayoutData(data);
// Another label.
label = new Label(composite, SWT.NONE);
label.setText(WorkbenchMessages.SavePerspective_existing);
label.setFont(font);
// Add perspective list.
list = new TableViewer(composite, SWT.H_SCROLL | SWT.V_SCROLL
| SWT.BORDER);
list.setLabelProvider(new PerspectiveLabelProvider());
list.setContentProvider(new PerspContentProvider());
list.addFilter(new ActivityViewerFilter());
list.setComparator(new ViewerComparator());
list.setInput(perspReg);
list.addSelectionChangedListener(this);
list.getTable().setFont(font);
// Set perspective list size.
Control ctrl = list.getControl();
GridData spec = new GridData(GridData.FILL_BOTH);
spec.widthHint = convertWidthInCharsToPixels(LIST_WIDTH);
spec.heightHint = convertHeightInCharsToPixels(LIST_HEIGHT);
ctrl.setLayoutData(spec);
// Set the initial selection
if (initialSelection != null) {
StructuredSelection sel = new StructuredSelection(initialSelection);
list.setSelection(sel, true);
}
text.selectAll();
// Return results.
return composite;
}
/**
* Returns the target name.
*
* @return the target name
*/
public IPerspectiveDescriptor getPersp() {
return persp;
}
/**
* Returns the target name.
*
* @return the target name
*/
public String getPerspName() {
return perspName;
}
/**
* The user has typed some text.
*/
public void modifyText(org.eclipse.swt.events.ModifyEvent e) {
// Get text.
perspName = text.getText();
// Transfer text to persp list.
ignoreSelection = true;
persp = perspReg.findPerspectiveWithLabel(perspName);
if (persp == null) {
StructuredSelection sel = new StructuredSelection();
list.setSelection(sel);
} else {
StructuredSelection sel = new StructuredSelection(persp);
list.setSelection(sel);
}
ignoreSelection = false;
updateButtons();
}
/**
* Notifies that the ok button of this dialog has been pressed.
* <p>
* The default implementation of this framework method sets
* this dialog's return code to <code>Window.OK</code>
* and closes the dialog. Subclasses may override.
* </p>
*/
protected void okPressed() {
perspName = text.getText();
persp = perspReg.findPerspectiveWithLabel(perspName);
if (persp != null) {
// Confirm ok to overwrite
String message = NLS.bind(WorkbenchMessages.SavePerspective_overwriteQuestion,perspName );
String[] buttons = new String[] { IDialogConstants.YES_LABEL,
IDialogConstants.NO_LABEL, IDialogConstants.CANCEL_LABEL };
MessageDialog d = new MessageDialog(this.getShell(),
WorkbenchMessages.SavePerspective_overwriteTitle,
null, message, MessageDialog.QUESTION, buttons, 0);
switch (d.open()) {
case 0: //yes
break;
case 1: //no
return;
case 2: //cancel
cancelPressed();
return;
default:
return;
}
}
super.okPressed();
}
/**
* Notifies that the selection has changed.
*
* @param event event object describing the change
*/
public void selectionChanged(SelectionChangedEvent event) {
// If a selection is caused by modifyText ignore it.
if (ignoreSelection) {
return;
}
// Get selection.
IStructuredSelection sel = (IStructuredSelection) list.getSelection();
persp = null;
if (!sel.isEmpty()) {
persp = (IPerspectiveDescriptor) sel.getFirstElement();
}
// Transfer selection to text field.
if (persp != null) {
perspName = persp.getLabel();
text.setText(perspName);
}
updateButtons();
}
/**
* Sets the initial selection in this dialog.
*
* @param selectedElement the perspective descriptor to select
*/
public void setInitialSelection(IPerspectiveDescriptor selectedElement) {
initialSelection = selectedElement;
}
/**
* Update the OK button.
*/
private void updateButtons() {
if (okButton != null) {
String label = text.getText();
okButton.setEnabled(perspReg.validateLabel(label));
}
}
}