| /******************************************************************************* |
| * Copyright (c) 2010 The Eclipse Foundation 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: |
| * The Eclipse Foundation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.epp.internal.mpc.ui.wizards; |
| |
| import org.eclipse.swt.custom.StyleRange; |
| import org.eclipse.swt.custom.StyledText; |
| import org.eclipse.swt.events.MouseEvent; |
| import org.eclipse.swt.events.MouseListener; |
| import org.eclipse.swt.events.SelectionEvent; |
| import org.eclipse.swt.events.SelectionListener; |
| import org.eclipse.swt.events.TypedEvent; |
| import org.eclipse.swt.graphics.Point; |
| |
| abstract class LinkListener implements MouseListener, SelectionListener { |
| |
| private boolean active = false; |
| |
| public void register(StyledText styledText) { |
| styledText.addSelectionListener(this); |
| styledText.addMouseListener(this); |
| } |
| |
| public void unregister(StyledText styledText) { |
| styledText.removeSelectionListener(this); |
| styledText.removeMouseListener(this); |
| } |
| |
| public void widgetSelected(SelectionEvent e) { |
| StyledText link = (StyledText) e.getSource(); |
| if (link.getSelectionCount() != 0) { |
| active = false; |
| } |
| } |
| |
| public void widgetDefaultSelected(SelectionEvent e) { |
| } |
| |
| public void mouseDoubleClick(MouseEvent e) { |
| } |
| |
| public void mouseDown(MouseEvent e) { |
| StyledText link = (StyledText) e.getSource(); |
| active = (e.button == 1) && link.getSelectionCount() == 0; |
| } |
| |
| public void mouseUp(MouseEvent e) { |
| if (!active) { |
| return; |
| } |
| active = false; |
| if (e.button != 1) { |
| return; |
| } |
| StyledText link = (StyledText) e.getSource(); |
| int offset; |
| try { |
| offset = link.getOffsetAtLocation(new Point(e.x, e.y)); |
| } catch (IllegalArgumentException ex) { |
| offset = -1; |
| } |
| Object data = null; |
| if (offset >= 0 && offset < link.getCharCount()) { |
| StyleRange style = link.getStyleRangeAtOffset(offset); |
| if (style != null) { |
| data = style.data; |
| } |
| } |
| if (data != null) { |
| selected(data, e); |
| } |
| } |
| |
| protected abstract void selected(Object href, TypedEvent event); |
| } |