/**
* Copyright (c) 2005-2012 by Appcelerator, Inc. All Rights Reserved.
* Licensed under the terms of the Eclipse Public License (EPL).
* Please see the license.txt included with this distribution for details.
* Any modifications to this file must keep this entire header intact.
*/
package org.python.pydev.ui.pythonpathconf;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import org.eclipse.core.runtime.IPath;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.viewers.CheckboxTableViewer;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
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.Shell;
import org.eclipse.swt.widgets.TableItem;
import org.eclipse.ui.dialogs.SelectionDialog;
public class PyListSelectionDialog extends SelectionDialog {
// the root element to populate the viewer with
private List<String> inputElement;
// providers for populating this dialog
private ILabelProvider labelProvider;
private IStructuredContentProvider contentProvider;
// the visual selection widget group
CheckboxTableViewer listViewer;
private boolean addSelectAllNotInWorkspace;
// sizing constants
private final static int SIZING_SELECTION_WIDGET_HEIGHT = 250;
private final static int SIZING_SELECTION_WIDGET_WIDTH = 300;
/**
* Creates a list selection dialog.
*
* @param parentShell the parent shell
* @param input the root element to populate this dialog with
* @param contentProvider the content provider for navigating the model
* @param labelProvider the label provider for displaying model elements
* @param message the message to be displayed at the top of this dialog, or
* <code>null</code> to display a default message
*/
public PyListSelectionDialog(Shell parentShell, List<String> input, IStructuredContentProvider contentProvider,
ILabelProvider labelProvider, String message, boolean addSelectAllNotInWorkspace) {
super(parentShell);
this.addSelectAllNotInWorkspace = addSelectAllNotInWorkspace;
setTitle("Selection needed");
inputElement = input;
this.contentProvider = contentProvider;
this.labelProvider = labelProvider;
if (message != null) {
setMessage(message);
} else {
setMessage("Select items");
}
}
/**
* 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.NONE);
GridLayout layout = new GridLayout();
layout.numColumns = 0;
layout.marginWidth = 0;
layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
buttonComposite.setLayout(layout);
buttonComposite.setLayoutData(new GridData(SWT.END, SWT.TOP, true, false));
if (addSelectAllNotInWorkspace) {
Button selectNotInWorkspaceButton = createButton(buttonComposite, IDialogConstants.SELECT_ALL_ID,
"Select All not in Workspace", false);
SelectionListener listenerNotInWorkspace = new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
HashSet<IPath> rootPaths = InterpreterConfigHelpers.getRootPaths();
TableItem[] children = listViewer.getTable().getItems();
for (int i = 0; i < children.length; i++) {
TableItem item = children[i];
item.setChecked(
!InterpreterConfigHelpers.isChildOfRootPath((String) item.getData(), rootPaths));
}
}
};
selectNotInWorkspaceButton.addSelectionListener(listenerNotInWorkspace);
}
Button selectButton = createButton(buttonComposite, IDialogConstants.SELECT_ALL_ID, "Select All", false);
SelectionListener listener = new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
listViewer.setAllChecked(true);
}
};
selectButton.addSelectionListener(listener);
Button deselectButton = createButton(buttonComposite, IDialogConstants.DESELECT_ALL_ID, "Deselect All", false);
listener = new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
listViewer.setAllChecked(false);
}
};
deselectButton.addSelectionListener(listener);
}
/**
* 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);
}
}
/* (non-Javadoc)
* Method declared on Dialog.
*/
@Override
protected Control createDialogArea(Composite parent) {
// page group
Composite composite = (Composite) super.createDialogArea(parent);
initializeDialogUnits(composite);
createMessageArea(composite);
listViewer = CheckboxTableViewer.newCheckList(composite, SWT.BORDER);
GridData data = new GridData(GridData.FILL_BOTH);
data.heightHint = SIZING_SELECTION_WIDGET_HEIGHT;
data.widthHint = SIZING_SELECTION_WIDGET_WIDTH;
listViewer.getTable().setLayoutData(data);
listViewer.setLabelProvider(labelProvider);
listViewer.setContentProvider(contentProvider);
addSelectionButtons(composite);
initializeViewer();
// initialize page
if (!getInitialElementSelections().isEmpty()) {
checkInitialSelections();
}
Dialog.applyDialogFont(composite);
return composite;
}
/**
* Returns the viewer used to show the list.
*
* @return the viewer, or <code>null</code> if not yet created
*/
protected CheckboxTableViewer getViewer() {
return listViewer;
}
/**
* Initializes this dialog's viewer after it has been laid out.
*/
private void initializeViewer() {
listViewer.setInput(inputElement);
}
/**
* The <code>ListSelectionDialog</code> implementation of this
* <code>Dialog</code> method builds a list of the selected elements for later
* retrieval by the client and closes this dialog.
*/
@Override
protected void okPressed() {
// Get the input children.
Object[] children = contentProvider.getElements(inputElement);
// Build a list of selected children.
if (children != null) {
ArrayList<Object> list = new ArrayList<Object>();
for (int i = 0; i < children.length; ++i) {
Object element = children[i];
if (listViewer.getChecked(element)) {
list.add(element);
}
}
setResult(list);
}
super.okPressed();
}
}