1 /*******************************************************************************
2 * Copyright (c) 2000, 2003 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Common Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/cpl-v10.html
9 * IBM Corporation - initial API and implementation
10 *******************************************************************************/
11 package net.sourceforge.phpdt.internal.ui.text.folding;
13 import net.sourceforge.phpdt.ui.text.folding.IJavaFoldingPreferenceBlock;
14 import net.sourceforge.phpdt.ui.text.folding.IJavaFoldingStructureProvider;
16 import org.eclipse.core.runtime.CoreException;
17 import org.eclipse.core.runtime.IConfigurationElement;
18 import org.eclipse.jface.text.Assert;
21 * Describes a contribution to the folding provider extension point.
25 public final class JavaFoldingStructureProviderDescriptor {
27 /* extension point attribute names */
29 private static final String PREFERENCES_CLASS = "preferencesClass"; //$NON-NLS-1$
31 private static final String CLASS = "class"; //$NON-NLS-1$
33 private static final String NAME = "name"; //$NON-NLS-1$
35 private static final String ID = "id"; //$NON-NLS-1$
37 /** The identifier of the extension. */
40 /** The name of the extension. */
43 /** The class name of the provided <code>IJavaFoldingStructureProvider</code>. */
44 private String fClass;
47 * <code>true</code> if the extension specifies a custom
48 * <code>IJavaFoldingPreferenceBlock</code>.
50 private boolean fHasPreferences;
52 /** The configuration element of this extension. */
53 private IConfigurationElement fElement;
56 * Creates a new descriptor.
59 * the configuration element to read
61 JavaFoldingStructureProviderDescriptor(IConfigurationElement element) {
63 fId = element.getAttributeAsIs(ID);
64 Assert.isLegal(fId != null);
66 fName = element.getAttribute(NAME);
70 fClass = element.getAttributeAsIs(CLASS);
71 Assert.isLegal(fClass != null);
73 if (element.getAttributeAsIs(PREFERENCES_CLASS) == null)
74 fHasPreferences = false;
76 fHasPreferences = true;
80 * Creates a folding provider as described in the extension's xml.
82 * @return a new instance of the folding provider described by this
84 * @throws CoreException
87 public IJavaFoldingStructureProvider createProvider() throws CoreException {
88 IJavaFoldingStructureProvider prov = (IJavaFoldingStructureProvider) fElement
89 .createExecutableExtension(CLASS);
94 * Creates a preferences object as described in the extension's xml.
96 * @return a new instance of the reference provider described by this
98 * @throws CoreException
101 public IJavaFoldingPreferenceBlock createPreferences() throws CoreException {
102 if (fHasPreferences) {
103 IJavaFoldingPreferenceBlock prefs = (IJavaFoldingPreferenceBlock) fElement
104 .createExecutableExtension(PREFERENCES_CLASS);
107 return new EmptyJavaFoldingPreferenceBlock();
112 * Returns the identifier of the described extension.
114 * @return Returns the id
116 public String getId() {
121 * Returns the name of the described extension.
123 * @return Returns the name
125 public String getName() {