X-Git-Url: http://git.phpeclipse.com

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/text/folding/JavaFoldingStructureProviderDescriptor.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/text/folding/JavaFoldingStructureProviderDescriptor.java
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+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/text/folding/JavaFoldingStructureProviderDescriptor.java
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+/*******************************************************************************
+ * Copyright (c) 2000, 2003 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package net.sourceforge.phpdt.internal.ui.text.folding;
+
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IConfigurationElement;
+
+import org.eclipse.jface.text.Assert;
+
+import net.sourceforge.phpdt.ui.text.folding.IJavaFoldingPreferenceBlock;
+import net.sourceforge.phpdt.ui.text.folding.IJavaFoldingStructureProvider;
+
+/**
+ * Describes a contribution to the folding provider extension point.
+ * 
+ * @since 3.0
+ */
+public final class JavaFoldingStructureProviderDescriptor {
+
+	/* extension point attribute names */
+	
+	private static final String PREFERENCES_CLASS= "preferencesClass"; //$NON-NLS-1$
+	private static final String CLASS= "class"; //$NON-NLS-1$
+	private static final String NAME= "name"; //$NON-NLS-1$
+	private static final String ID= "id"; //$NON-NLS-1$
+	
+	/** The identifier of the extension. */
+	private String fId;
+	/** The name of the extension. */
+	private String fName;
+	/** The class name of the provided <code>IJavaFoldingStructureProvider</code>. */
+	private String fClass;
+	/**
+	 * <code>true</code> if the extension specifies a custom
+	 * <code>IJavaFoldingPreferenceBlock</code>.
+	 */
+	private boolean fHasPreferences;
+	/** The configuration element of this extension. */
+	private IConfigurationElement fElement;
+	
+	/**
+	 * Creates a new descriptor.
+	 * 
+	 * @param element the configuration element to read
+	 */
+	JavaFoldingStructureProviderDescriptor(IConfigurationElement element) {
+		fElement= element;
+		fId= element.getAttributeAsIs(ID);
+		Assert.isLegal(fId != null);
+		
+		fName= element.getAttribute(NAME);
+		if (fName == null)
+			fName= fId;
+		
+		fClass= element.getAttributeAsIs(CLASS);
+		Assert.isLegal(fClass != null);
+		
+		if (element.getAttributeAsIs(PREFERENCES_CLASS) == null)
+			fHasPreferences= false;
+		else
+			fHasPreferences= true;
+	}
+	
+	/**
+	 * Creates a folding provider as described in the extension's xml.
+	 * 
+	 * @return a new instance of the folding provider described by this
+	 *         descriptor
+	 * @throws CoreException if creation fails
+	 */
+	public IJavaFoldingStructureProvider createProvider() throws CoreException {
+		IJavaFoldingStructureProvider prov= (IJavaFoldingStructureProvider) fElement.createExecutableExtension(CLASS);
+		return prov;
+	}
+
+	/**
+	 * Creates a preferences object as described in the extension's xml.
+	 * 
+	 * @return a new instance of the reference provider described by this
+	 *         descriptor
+	 * @throws CoreException if creation fails
+	 */
+	public IJavaFoldingPreferenceBlock createPreferences() throws CoreException {
+		if (fHasPreferences) {
+			IJavaFoldingPreferenceBlock prefs= (IJavaFoldingPreferenceBlock) fElement.createExecutableExtension(PREFERENCES_CLASS);
+			return prefs;
+		} else {
+			return new EmptyJavaFoldingPreferenceBlock();
+		}
+	}
+	
+	/**
+	 * Returns the identifier of the described extension.
+	 * 
+	 * @return Returns the id
+	 */
+	public String getId() {
+		return fId;
+	}
+	
+	/**
+	 * Returns the name of the described extension.
+	 * 
+	 * @return Returns the name
+	 */
+	public String getName() {
+		return fName;
+	}
+}