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/*******************************************************************************
* Copyright (c) 2000, 2006 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.team.internal.ccvs.ui;
import java.util.*;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.viewers.*;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.*;
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.team.internal.ui.dialogs.DialogArea;
/**
* Reusable area that provides a list to select from and a select all and
* deselect all button.
*/
public class ListSelectionArea extends DialogArea {
private Object inputElement;
private IStructuredContentProvider contentProvider;
private ILabelProvider labelProvider;
private String message;
private List initialSelections;
// the visual selection widget group
private CheckboxTableViewer listViewer;
private Object[] previousCheckedElements;
public static final String LIST_SELECTION = "ListSelection"; //$NON-NLS-1$
/**
* Constructor for ListSelectionArea.
* @param parentDialog
* @param settings
*/
public ListSelectionArea(
Object input,
IStructuredContentProvider contentProvider,
ILabelProvider labelProvider,
String message) {
this.inputElement = input;
this.contentProvider = contentProvider;
this.labelProvider = labelProvider;
this.message = message;
this.initialSelections = new ArrayList();
}
@Override
public void createArea(Composite parent) {
Dialog.applyDialogFont(parent);
final Composite composite = createComposite(parent, 1, true);
initializeDialogUnits(composite);
if (message != null)
createWrappingLabel(composite, message, 1);
listViewer = CheckboxTableViewer.newCheckList(composite, SWT.BORDER);
GridData data = new GridData(SWT.FILL, SWT.FILL, true, true);
data.heightHint = 0; // It will expand to the size of the wizard page!
data.widthHint = 0;
listViewer.getTable().setLayoutData(data);
listViewer.setLabelProvider(labelProvider);
listViewer.setContentProvider(contentProvider);
listViewer.addCheckStateListener(new ICheckStateListener() {
@Override
public void checkStateChanged(CheckStateChangedEvent event) {
Object[] checkedElements = getViewer().getCheckedElements();
firePropertyChangeChange(LIST_SELECTION, previousCheckedElements, checkedElements);
previousCheckedElements = checkedElements;
}
});
addSelectionButtons(composite);
initializeViewer();
// initialize page
if (!getInitialElementSelections().isEmpty())
checkInitialSelections();
}
/**
* Initializes this dialog's viewer after it has been laid out.
*/
private void initializeViewer() {
listViewer.setInput(inputElement);
}
/**
* Visually checks the previously-specified elements in this dialog's list
* viewer.
*/
private void checkInitialSelections() {
Iterator itemsToCheck = getInitialElementSelections().iterator();
while (itemsToCheck.hasNext())
listViewer.setChecked(itemsToCheck.next(),true);
}
/**
* Add the selection and deselection buttons to the dialog.
* @param composite org.eclipse.swt.widgets.Composite
*/
private void addSelectionButtons(Composite composite) {
Composite buttonComposite = new Composite(composite, SWT.RIGHT);
buttonComposite.setLayout(new GridLayout(2, false));
buttonComposite.setData(new GridData(SWT.END, SWT.BEGINNING, true, false));
Button selectButton = createButton(buttonComposite, CVSUIMessages.ListSelectionArea_selectAll, GridData.HORIZONTAL_ALIGN_FILL);
SelectionListener listener = new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
listViewer.setAllChecked(true);
}
};
selectButton.addSelectionListener(listener);
Button deselectButton = createButton(buttonComposite, CVSUIMessages.ListSelectionArea_deselectAll, GridData.HORIZONTAL_ALIGN_FILL);
listener = new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
listViewer.setAllChecked(false);
}
};
deselectButton.addSelectionListener(listener);
}
/**
* Returns the list of initial element selections.
* @return List
*/
protected List getInitialElementSelections(){
return initialSelections;
}
/**
* Returns the listViewer.
* @return CheckboxTableViewer
*/
public CheckboxTableViewer getViewer() {
return listViewer;
}
}
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