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/*
* Sun Public License Notice
*
* The contents of this file are subject to the Sun Public License
* Version 1.0 (the "License"). You may not use this file except in
* compliance with the License. A copy of the License is available at
* http://www.sun.com/
*
* The Original Code is NetBeans. The Initial Developer of the Original
* Code is Sun Microsystems, Inc. Portions Copyright 1997-2003 Sun
* Microsystems, Inc. All Rights Reserved.
*/
package org.netbeans.modules.editor.fold;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.WeakHashMap;
import javax.swing.text.EditorKit;
import javax.swing.text.JTextComponent;
import org.netbeans.api.editor.fold.FoldHierarchy;
import org.netbeans.spi.editor.fold.FoldManagerFactory;
import org.openide.ErrorManager;
import org.openide.cookies.InstanceCookie;
import org.openide.filesystems.FileObject;
import org.openide.filesystems.FileSystem;
import org.openide.filesystems.Repository;
import org.openide.loaders.DataFolder;
import org.openide.loaders.DataObject;
import org.openide.loaders.DataObjectNotFoundException;
/**
* Fold manager factory provider that obtains the factories
* by reading the xml layer.
*
* The registration are read from the following folder in the system FS:
* * Editors/<mime-type>/FoldManager
*
* For example java fold manager factories should be registered in
* * Editors/text/x-java/FoldManager
*
*
*
* @author Miloslav Metelka, Martin Roskanin
*/
class LayerProvider extends FoldManagerFactoryProvider {
private static final String FOLDER_NAME = "FoldManager"; //NOI18N
private Map kit2factoryList;
LayerProvider() {
kit2factoryList = new WeakHashMap();
}
public List getFactoryList(FoldHierarchy hierarchy) {
List factoryList = null; // result
JTextComponent editorComponent = hierarchy.getComponent();
EditorKit kit = editorComponent.getUI().getEditorKit(editorComponent);
if (kit != null) {
factoryList = (List)kit2factoryList.get(kit);
if (factoryList == null) { // not cached yet
String mimeType = kit.getContentType();
if (mimeType != null) {
Repository repository = Repository.getDefault();
FileSystem defaultFS;
if (repository != null && (defaultFS = repository.getDefaultFileSystem()) != null) {
FileObject dir = defaultFS.findResource("Editors/" + mimeType + "/" + FOLDER_NAME); // NOI18N
if (dir!=null){
try {
DataObject dob = DataObject.find(dir);
DataFolder folder = (DataFolder)dob.getCookie(DataFolder.class);
DataObject[] children;
if (folder != null && (children = folder.getChildren()) != null) {
factoryList = new ArrayList();
for (int i = 0; i < children.length; i++) {
InstanceCookie ic = (InstanceCookie)children[i].getCookie(InstanceCookie.class);
if (ic != null) {
try {
Object inst = ic.instanceCreate();
if (inst instanceof FoldManagerFactory) {
factoryList.add(inst);
} else {
ErrorManager.getDefault().log(ErrorManager.WARNING,
inst.toString() + " not instanceof FoldManagerFactory"); // NOI18N
}
} catch (Exception e) {
// skip this factory
}
}
}
kit2factoryList.put(kit, factoryList);
}
} catch (DataObjectNotFoundException e) {
// factoryList stays null
}
}
}
}
} // not yet cached
}
if (factoryList == null) {
return Collections.EMPTY_LIST;
}
return factoryList;
}
}
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