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/*******************************************************************************
* Copyright (c) 2008 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.jst.jsp.ui.internal.autoedit;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.DocumentCommand;
import org.eclipse.jface.text.IAutoEditStrategy;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jst.jsp.ui.internal.JSPUIPlugin;
import org.eclipse.jst.jsp.ui.internal.Logger;
import org.eclipse.jst.jsp.ui.internal.preferences.JSPUIPreferenceNames;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.texteditor.ITextEditor;
import org.eclipse.ui.texteditor.ITextEditorExtension3;
import org.eclipse.wst.sse.core.StructuredModelManager;
import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode;
public class StructuredAutoEditStrategyJSPJava implements IAutoEditStrategy {
public void customizeDocumentCommand(IDocument document, DocumentCommand command) {
Object textEditor = getActiveTextEditor();
if (!(textEditor instanceof ITextEditorExtension3 && ((ITextEditorExtension3) textEditor).getInsertMode() == ITextEditorExtension3.SMART_INSERT))
return;
IStructuredModel model = null;
try {
// Auto edit for JSP Comments
if ("-".equals(command.text) && isPreferenceEnabled(JSPUIPreferenceNames.TYPING_COMPLETE_COMMENTS)) { //$NON-NLS-1$
if (prefixedWith(document, command.offset, "<%-")) { //$NON-NLS-1$
model = StructuredModelManager.getModelManager().getExistingModelForRead(document);
if (model != null) {
IDOMNode node = (IDOMNode) model.getIndexedRegion(command.offset);
IDOMNode parent = (node != null) ? (IDOMNode) node.getParentNode() : null;
// Parent is the scriptlet tag
if (parent != null && !parent.getSource().endsWith("--%>")) { //$NON-NLS-1$
IStructuredDocumentRegion end = parent.getEndStructuredDocumentRegion();
if (end != null) {
try {
document.replace(end.getStartOffset(), 0, "--"); //$NON-NLS-1$
} catch (BadLocationException e) {
Logger.logException(e);
}
}
}
}
}
}
}
finally {
if (model != null)
model.releaseFromRead();
}
}
private boolean isPreferenceEnabled(String key) {
return (key != null && JSPUIPlugin.getDefault().getPreferenceStore().getBoolean(key));
}
/**
* Return the active text editor if possible, otherwise the active editor
* part.
*
* @return
*/
private Object getActiveTextEditor() {
IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
if (window != null) {
IWorkbenchPage page = window.getActivePage();
if (page != null) {
IEditorPart editor = page.getActiveEditor();
if (editor != null) {
if (editor instanceof ITextEditor)
return editor;
ITextEditor textEditor = (ITextEditor) editor.getAdapter(ITextEditor.class);
if (textEditor != null)
return textEditor;
return editor;
}
}
}
return null;
}
private boolean prefixedWith(IDocument document, int offset, String string) {
try {
return document.getLength() >= string.length() && document.get(offset - string.length(), string.length()).equals(string);
}
catch (BadLocationException e) {
Logger.logException(e);
return false;
}
}
}
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