org.eclipse.osbp.preferences.ui.page/src/org/eclipse/osbp/preferences/ui/component/LinkFieldEditor.java

/**
 *                                                                            
 * Copyright (c) 2011, 2016 - Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
 *                                                                            
 * 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:   
 * Christophe Loetz (Loetz GmbH&Co.KG) - initial implementation 
 */
package org.eclipse.osbp.preferences.ui.component;

import java.awt.Desktop;
import java.io.File;
import java.net.URI;

import org.eclipse.core.filesystem.EFS;
import org.eclipse.core.filesystem.IFileStore;
import org.eclipse.jface.preference.FieldEditor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Link;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.ide.IDE;

public class LinkFieldEditor extends FieldEditor {
	
	public class WebLinkListener implements Listener {

		@Override
		public void handleEvent(Event event) {
			try {
				Desktop.getDesktop().browse(new URI(event.text));
			}
			catch (Exception e) {
				e.printStackTrace();
			}
		}
	}

	private boolean isValid;
	private String oldValue;
	private String compTitle;
	private Label title;
	private Link urlLink;

	protected LinkFieldEditor() {
	}

	public LinkFieldEditor(String name, String labelText, Composite parent) {
		init(name, labelText);
		createControl(parent);
	}

	protected boolean checkState() {
		return true;
	}

	protected boolean doCheckState() {
		return true;
	}

	@Override
	protected void doFillIntoGrid(Composite parent, int numColumns) {
		title = new Label(parent, SWT.UP);
		title.setFont(parent.getFont());
		title.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_BEGINNING));
		title.setVisible(false);

		urlLink = new Link(parent, SWT.NONE);
		GridData gd = new GridData(GridData.FILL_HORIZONTAL);
		gd.widthHint = 100;
		urlLink.setLayoutData(gd);
		urlLink.setFont(parent.getFont());
		//urlLink.setText(getPreferenceStore().getString(getPreferenceName()));
		urlLink.addListener(SWT.Selection, new WebLinkListener());
		urlLink.setEnabled(true);
	}

	@Override
	protected void doLoad() {
		urlLink.setText(getPreferenceStore().getString(getPreferenceName()));
	}

	@Override
	protected void doLoadDefault() {
	}

	@Override
	protected void doStore() {
	}

	@Override
	public int getNumberOfControls() {
		return 2;
	}

	public String getStringValue() {
		return null;
	}

	@Override
	public boolean isValid() {
		return true;
	}

	@Override
	protected void adjustForNumColumns(int numColumns) {
	}
}