| /******************************************************************************* |
| * Copyright (c) 2007, 2013 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ui.texteditor; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.osgi.framework.Bundle; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IConfigurationElement; |
| import org.eclipse.core.runtime.IExtensionRegistry; |
| import org.eclipse.core.runtime.ISafeRunnable; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.core.runtime.SafeRunner; |
| import org.eclipse.core.runtime.Status; |
| |
| import org.eclipse.jface.util.SafeRunnable; |
| |
| import org.eclipse.jface.text.hyperlink.AbstractHyperlinkDetector; |
| import org.eclipse.jface.text.hyperlink.IHyperlinkDetector; |
| |
| import org.eclipse.ui.internal.texteditor.NLSUtility; |
| import org.eclipse.ui.internal.texteditor.TextEditorPlugin; |
| |
| |
| /** |
| * Describes a contribution to the 'org.eclipse.ui.workbench.texteditor.hyperlinkDetectors' |
| * extension point. |
| * |
| * @since 3.3 |
| * @noinstantiate This class is not intended to be instantiated by clients. |
| */ |
| public final class HyperlinkDetectorDescriptor { |
| |
| public static final String STATE_MASK_POSTFIX= "_stateMask"; //$NON-NLS-1$ |
| |
| private static final String HYPERLINK_DETECTORS_EXTENSION_POINT= "org.eclipse.ui.workbench.texteditor.hyperlinkDetectors"; //$NON-NLS-1$ |
| private static final String HYPERLINK_DETECTOR_ELEMENT= "hyperlinkDetector"; //$NON-NLS-1$ |
| private static final String ID_ATTRIBUTE= "id"; //$NON-NLS-1$ |
| private static final String NAME_ATTRIBUTE= "name"; //$NON-NLS-1$ |
| private static final String DESCRIPTION_ATTRIBUTE= "description"; //$NON-NLS-1$ |
| private static final String TARGET_ID_ATTRIBUTE= "targetId"; //$NON-NLS-1$ |
| private static final String CLASS_ATTRIBUTE= "class"; //$NON-NLS-1$ |
| private static final String ACTIVATE_PLUG_IN_ATTRIBUTE= "activate"; //$NON-NLS-1$ |
| private static final String MODIFIER_KEYS= "modifierKeys"; //$NON-NLS-1$ |
| |
| private IConfigurationElement fElement; |
| private HyperlinkDetectorTargetDescriptor fTarget; |
| |
| |
| /** |
| * Returns descriptors for all hyperlink detector extensions. |
| * |
| * @return an array with the contributed hyperlink detectors |
| */ |
| public static HyperlinkDetectorDescriptor[] getContributedHyperlinkDetectors() { |
| IExtensionRegistry registry= Platform.getExtensionRegistry(); |
| IConfigurationElement[] elements= registry.getConfigurationElementsFor(HYPERLINK_DETECTORS_EXTENSION_POINT); |
| HyperlinkDetectorDescriptor[] hyperlinkDetectorDescs= createDescriptors(elements); |
| return hyperlinkDetectorDescs; |
| } |
| |
| /** |
| * Creates a new descriptor from the given configuration element. |
| * |
| * @param element the configuration element |
| */ |
| private HyperlinkDetectorDescriptor(IConfigurationElement element) { |
| Assert.isNotNull(element); |
| fElement= element; |
| } |
| |
| /** |
| * Creates a new {@link AbstractHyperlinkDetector}. |
| * |
| * @return the hyperlink detector or <code>null</code> if the plug-in isn't loaded yet |
| * @throws CoreException if a failure occurred during creation |
| * @deprecated As of 3.9, replaced by {@link #createHyperlinkDetectorImplementation()} |
| */ |
| @Deprecated |
| public AbstractHyperlinkDetector createHyperlinkDetector() throws CoreException { |
| return (AbstractHyperlinkDetector)createHyperlinkDetectorImplementation(); |
| } |
| |
| /** |
| * Creates a new {@link IHyperlinkDetector}. |
| * |
| * @return the hyperlink detector or <code>null</code> if the plug-in isn't loaded yet |
| * @throws CoreException if a failure occurred during creation |
| * @since 3.9 |
| */ |
| public IHyperlinkDetector createHyperlinkDetectorImplementation() throws CoreException { |
| final Throwable[] exception= new Throwable[1]; |
| final IHyperlinkDetector[] result= new IHyperlinkDetector[1]; |
| String message= NLSUtility.format(EditorMessages.Editor_error_HyperlinkDetector_couldNotCreate_message, new String[] { getId(), fElement.getContributor().getName() }); |
| ISafeRunnable code= new SafeRunnable(message) { |
| @Override |
| public void run() throws Exception { |
| String pluginId = fElement.getContributor().getName(); |
| boolean isPlugInActivated= Platform.getBundle(pluginId).getState() == Bundle.ACTIVE; |
| if (isPlugInActivated || canActivatePlugIn()) |
| result[0]= (IHyperlinkDetector)fElement.createExecutableExtension(CLASS_ATTRIBUTE); |
| } |
| @Override |
| public void handleException(Throwable ex) { |
| super.handleException(ex); |
| exception[0]= ex; |
| } |
| |
| }; |
| |
| SafeRunner.run(code); |
| |
| if (exception[0] == null) |
| return result[0]; |
| throw new CoreException(new Status(IStatus.ERROR, TextEditorPlugin.PLUGIN_ID, IStatus.OK, message, exception[0])); |
| |
| } |
| |
| private boolean isValid(HyperlinkDetectorTargetDescriptor[] targets) { |
| if (getId() == null || getName() == null || getTargetId() == null) |
| return false; |
| |
| String targetId= getTargetId(); |
| for (int i= 0; i < targets.length; i++) { |
| if (targetId.equals(targets[i].getId())) { |
| fTarget= targets[i]; |
| return true; |
| } |
| } |
| return false; |
| |
| } |
| |
| //---- XML Attribute accessors --------------------------------------------- |
| |
| /** |
| * Returns the hyperlink detector's id. |
| * |
| * @return the hyperlink detector's id |
| */ |
| public String getId() { |
| return fElement.getAttribute(ID_ATTRIBUTE); |
| } |
| |
| /** |
| * Returns the hyperlink detector's name. |
| * |
| * @return the hyperlink detector's name |
| */ |
| public String getName() { |
| return fElement.getAttribute(NAME_ATTRIBUTE); |
| } |
| |
| /** |
| * Returns the hyperlink detector's target descriptor. |
| * |
| * @return the hyperlink detector's target descriptor |
| */ |
| public HyperlinkDetectorTargetDescriptor getTarget() { |
| return fTarget; |
| } |
| |
| /** |
| * Returns the hyperlink detector's target id. |
| * |
| * @return the hyperlink detector's target id |
| */ |
| public String getTargetId() { |
| return fElement.getAttribute(TARGET_ID_ATTRIBUTE); |
| } |
| |
| /** |
| * Returns the hyperlink detector's description. |
| * |
| * @return the hyperlink detector's description or <code>null</code> if not provided |
| */ |
| public String getDescription() { |
| return fElement.getAttribute(DESCRIPTION_ATTRIBUTE); |
| } |
| |
| /** |
| * Returns the hyperlink detector's modifier keys that |
| * need to be pressed for this hyperlink detector. |
| * |
| * @return the hyperlink detector's description or <code>null</code> if not provided |
| */ |
| public String getModifierKeys() { |
| return fElement.getAttribute(MODIFIER_KEYS); |
| } |
| |
| public boolean canActivatePlugIn() { |
| String value= fElement.getAttribute(ACTIVATE_PLUG_IN_ATTRIBUTE); |
| if (value == null) |
| return true; |
| return Boolean.valueOf(value).booleanValue(); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj == null || !obj.getClass().equals(this.getClass()) || getId() == null) |
| return false; |
| return getId().equals(((HyperlinkDetectorDescriptor)obj).getId()); |
| } |
| |
| @Override |
| public int hashCode() { |
| return getId().hashCode(); |
| } |
| |
| private static HyperlinkDetectorDescriptor[] createDescriptors(IConfigurationElement[] elements) { |
| HyperlinkDetectorTargetDescriptor[] targets= HyperlinkDetectorTargetDescriptor.getContributedHyperlinkDetectorTargets(); |
| List<HyperlinkDetectorDescriptor> result= new ArrayList<>(elements.length); |
| for (int i= 0; i < elements.length; i++) { |
| IConfigurationElement element= elements[i]; |
| if (HYPERLINK_DETECTOR_ELEMENT.equals(element.getName())) { |
| HyperlinkDetectorDescriptor desc= new HyperlinkDetectorDescriptor(element); |
| if (desc.isValid(targets)) |
| result.add(desc); |
| else { |
| String message= NLSUtility.format(EditorMessages.Editor_error_HyperlinkDetector_invalidExtension_message, new String[] {desc.getId(), element.getContributor().getName()}); |
| TextEditorPlugin.getDefault().getLog().log(new Status(IStatus.ERROR, TextEditorPlugin.PLUGIN_ID, IStatus.OK, message, null)); |
| } |
| } else { |
| String message= NLSUtility.format(EditorMessages.Editor_error_HyperlinkDetector_invalidElementName_message, new String[] { element.getContributor().getName(), element.getName() }); |
| TextEditorPlugin.getDefault().getLog().log(new Status(IStatus.ERROR, TextEditorPlugin.PLUGIN_ID, IStatus.OK, message, null)); |
| } |
| } |
| return result.toArray(new HyperlinkDetectorDescriptor[result.size()]); |
| } |
| |
| } |