| /******************************************************************************* |
| * Copyright (c) 2007, 2009 David Green and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * David Green - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.mylyn.internal.wikitext.ui.util; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.jface.preference.IPreferenceStore; |
| import org.eclipse.jface.text.IRegion; |
| import org.eclipse.jface.text.ITextViewer; |
| import org.eclipse.jface.text.hyperlink.AbstractHyperlinkDetector; |
| import org.eclipse.jface.text.hyperlink.IHyperlink; |
| import org.eclipse.jface.text.hyperlink.IHyperlinkDetector; |
| import org.eclipse.jface.text.hyperlink.IHyperlinkDetectorExtension; |
| import org.eclipse.jface.text.hyperlink.IHyperlinkDetectorExtension2; |
| import org.eclipse.ui.texteditor.HyperlinkDetectorDescriptor; |
| |
| /** |
| * A means to delay activation of plug-ins by delaying creation of a hyperlink detector from a descriptor. |
| * |
| * @author David Green |
| */ |
| public class HyperlinkDetectorDelegate |
| implements IHyperlinkDetector, IHyperlinkDetectorExtension, IHyperlinkDetectorExtension2 { |
| |
| private HyperlinkDetectorDescriptor descriptor; |
| |
| private IHyperlinkDetector delegate; |
| |
| private boolean createFailed; |
| |
| private IAdaptable context; |
| |
| private int stateMask; |
| |
| private boolean enabled; |
| |
| public HyperlinkDetectorDelegate(HyperlinkDetectorDescriptor descriptor, IPreferenceStore preferenceStore) { |
| this.descriptor = descriptor; |
| if (preferenceStore != null) { |
| stateMask = preferenceStore.getInt(descriptor.getId() + HyperlinkDetectorDescriptor.STATE_MASK_POSTFIX); |
| enabled = !preferenceStore.getBoolean(descriptor.getId()); |
| } |
| } |
| |
| public IHyperlink[] detectHyperlinks(ITextViewer textViewer, IRegion region, boolean canShowMultipleHyperlinks) { |
| if (!isEnabled()) { |
| return null; |
| } |
| |
| if (!createFailed && delegate == null) { |
| try { |
| delegate = descriptor.createHyperlinkDetectorImplementation(); |
| } catch (CoreException ex) { |
| createFailed = true; |
| } |
| if (context != null && delegate instanceof AbstractHyperlinkDetector) { |
| ((AbstractHyperlinkDetector) delegate).setContext(context); |
| } |
| } |
| if (delegate != null) { |
| return delegate.detectHyperlinks(textViewer, region, canShowMultipleHyperlinks); |
| } |
| |
| return null; |
| } |
| |
| public boolean isEnabled() { |
| return enabled; |
| } |
| |
| public void setContext(IAdaptable context) { |
| this.context = context; |
| } |
| |
| public void dispose() { |
| if (delegate != null) { |
| if (delegate instanceof IHyperlinkDetectorExtension) { |
| ((IHyperlinkDetectorExtension) delegate).dispose(); |
| } |
| delegate = null; |
| } |
| descriptor = null; |
| context = null; |
| } |
| |
| public int getStateMask() { |
| return stateMask; |
| } |
| } |