update/org.eclipse.update.ui/src/org/eclipse/update/internal/ui/manager/ConfigurationPropertyPage.java

package org.eclipse.update.internal.ui.manager;
/*
 * (c) Copyright IBM Corp. 2000, 2001.
 * All Rights Reserved.
 */
import org.eclipse.swt.widgets.*;
import org.eclipse.ui.dialogs.PropertyPage;
import org.eclipse.ui.IWorkbenchPropertyPage;
import org.eclipse.swt.*;
import org.eclipse.swt.layout.*;
import org.eclipse.update.ui.internal.model.*;
import org.eclipse.swt.events.*;
import org.eclipse.update.internal.ui.UpdateUIPlugin;
import org.eclipse.update.core.*;
import org.eclipse.core.runtime.CoreException;

/**
 * Insert the type's description here.
 * @see PropertyPage
 */
public class ConfigurationPropertyPage extends PropertyPage implements IWorkbenchPropertyPage {
	private static final String KEY_NAME = "ConfigurationPropertyPage.name";
	private Text nameText;
	private boolean changed;
	/**
	 * The constructor.
	 */
	public ConfigurationPropertyPage() {
	}

	/**
	 * Insert the method's description here.
	 * @see PropertyPage#createContents
	 */
	protected Control createContents(Composite parent)  {
		Composite container = new Composite(parent, SWT.NULL);
		GridLayout layout = new GridLayout();
		layout.numColumns = 2;
		container.setLayout(layout);
		
		Label label = new Label(container, SWT.NULL);
		label.setText(UpdateUIPlugin.getResourceString(KEY_NAME));
		nameText = new Text(container, SWT.SINGLE|SWT.BORDER);
		GridData gd = new GridData(GridData.FILL_HORIZONTAL);
		nameText.setLayoutData(gd);
		initializeFields();
		return container;
	}
	
	public boolean performOk() {
		if (changed) {
			IInstallConfiguration config = (IInstallConfiguration)getElement();
			config.setLabel(nameText.getText());
			UpdateModel model = UpdateUIPlugin.getDefault().getUpdateModel();
			model.fireObjectChanged(config, null);
			try {
				SiteManager.getLocalSite().save();
			}
			catch (CoreException e) {
				UpdateUIPlugin.logException(e);
			}
		}
		return true;
	}
	
	private void initializeFields() {
		IInstallConfiguration config = (IInstallConfiguration)getElement();
		nameText.setText(config.getLabel());
		nameText.addModifyListener(new ModifyListener() {
			public void modifyText(ModifyEvent e) {
				checkFields();
			}
		});
	}
	private void checkFields() {
		boolean valid = true;
		// check the value
		setValid(valid);
		changed=true;
	}
}