/*******************************************************************************
* Copyright (c) 2007, 2009 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.wst.jsdt.web.ui.actions;
import java.util.ArrayList;
import java.util.Iterator;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.dnd.Clipboard;
import org.eclipse.swt.dnd.TextTransfer;
import org.eclipse.swt.dnd.Transfer;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.IObjectActionDelegate;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.wst.jsdt.core.IJavaScriptElement;
import org.eclipse.wst.jsdt.web.ui.views.contentoutline.IJavaWebNode;
import org.eclipse.wst.jsdt.web.ui.views.contentoutline.JsJfaceNode;
import org.eclipse.wst.sse.core.StructuredModelManager;
import org.eclipse.wst.sse.core.internal.provisional.IModelManager;
import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument;
/**
*
* Provisional API: This class/interface is part of an interim API that is still under development and expected to
* change significantly before reaching stability. It is being made available at this early stage to solicit feedback
* from pioneering adopters on the understanding that any code that uses this API will almost certainly be broken
* (repeatedly) as the API evolves.
*
* @author childsb
*
*/
public class StandardEditorActionsAction implements IObjectActionDelegate {
private static final boolean APPEND_NEW_LINES_TO_COPY = true;
protected static final String COPY = "org.eclipse.wst.jsdt.web.ui.copy"; //$NON-NLS-1$
protected static final String CUT = "org.eclipse.wst.jsdt.web.ui.cut"; //$NON-NLS-1$
protected static final String DELETE = "org.eclipse.wst.jsdt.web.ui.delete"; //$NON-NLS-1$
private static final char NEW_LINE = '\n';
protected static final String PASTE_AFTER = "org.eclipse.wst.jsdt.web.ui.paste.after"; //$NON-NLS-1$
protected static final String PASTE_BEFORE = "org.eclipse.wst.jsdt.web.ui.paste.before"; //$NON-NLS-1$
protected ISelection selection;
/*
* (non-Javadoc)
*
* @see org.eclipse.ui.IActionDelegate#selectionChanged(org.eclipse.jface.action.IAction,
* org.eclipse.jface.viewers.ISelection)
*/
private void copy(IAction action) {
JsJfaceNode[] nodes = parseSelection();
if (nodes == null || nodes.length == 0) {
return;
}
Clipboard clipboard = null;
StringBuffer text = new StringBuffer();
if (StandardEditorActionsAction.APPEND_NEW_LINES_TO_COPY) {
text.append(StandardEditorActionsAction.NEW_LINE);
}
try {
for (int i = 0; i < nodes.length; i++) {
JsJfaceNode currentNode = nodes[i];
int start = currentNode.getStartOffset();
int length = currentNode.getLength();
IStructuredDocument doc = currentNode.getStructuredDocument();
try {
String elementText = doc.get(start, length);
text.append(elementText);
} catch (BadLocationException ex) {
// TODO Auto-generated catch block
ex.printStackTrace();
}
if (StandardEditorActionsAction.APPEND_NEW_LINES_TO_COPY) {
text.append(StandardEditorActionsAction.NEW_LINE);
}
clipboard = new Clipboard(Display.getCurrent());
clipboard.setContents(new Object[] { text.toString() }, new Transfer[] { TextTransfer.getInstance() });
}
} finally {
if (clipboard != null) {
clipboard.dispose();
}
}
}
private void delete(IAction action) {
JsJfaceNode[] nodes = parseSelection();
if (nodes == null || nodes.length == 0) {
return;
}
IStructuredDocument lastDoc = null;
IModelManager modelManager = StructuredModelManager.getModelManager();
IStructuredModel model = null;
try {
int start;
int length;
for (int i = 0; i < nodes.length; i++) {
JsJfaceNode currentNode = nodes[i];
start = currentNode.getStartOffset();
length = currentNode.getLength();
IStructuredDocument doc = currentNode.getStructuredDocument();
if (doc != lastDoc) {
lastDoc = doc;
if (model != null) {
model.endRecording(action);
model.changedModel();
model.releaseFromEdit();
}
if (modelManager != null) {
model = modelManager.getExistingModelForEdit(doc);
model.aboutToChangeModel();
model.beginRecording(action, "Delete JavaScript Element", "Delete JavaScript Element");
}
}
doc.replaceText(action, start, length, ""); //$NON-NLS-1$
}
model.endRecording(action);
} catch (Exception e) {
System.out.println(Messages.getString("StandardEditorActionsAction.8") + e); //$NON-NLS-1$
} finally {
if (model != null) {
model.changedModel();
model.releaseFromEdit();
}
}
}
private JsJfaceNode[] parseSelection() {
if (selection == null) {
return new JsJfaceNode[0];
}
ArrayList elements = new ArrayList();
if (selection instanceof IStructuredSelection) {
Iterator itt = ((IStructuredSelection) selection).iterator();
while (itt.hasNext()) {
Object element = itt.next();
if (element instanceof IJavaScriptElement) {
elements.add(element);
}
if (element instanceof IJavaWebNode) {
elements.add(element);
}
}
return (JsJfaceNode[]) elements.toArray(new JsJfaceNode[elements.size()]);
}
return new JsJfaceNode[0];
}
private void paste(IAction action, boolean atEnd) {
JsJfaceNode[] nodes = parseSelection();
if (nodes == null || nodes.length == 0) {
return;
}
int startOfPaste = -1;
IStructuredDocument doc = null;
/* Figure out where to paste the content */
if (atEnd) {
for (int i = 0; i < nodes.length; i++) {
if ((nodes[i].getStartOffset() + nodes[i].getLength()) > startOfPaste) {
startOfPaste = (nodes[i].getStartOffset() + nodes[i].getLength());
doc = nodes[i].getStructuredDocument();
}
}
} else {
for (int i = 0; i < nodes.length; i++) {
if ((nodes[i].getStartOffset() < startOfPaste || startOfPaste < 0)) {
startOfPaste = nodes[i].getStartOffset();
doc = nodes[i].getStructuredDocument();
}
}
}
Clipboard clipboard = null;
IModelManager modelManager = StructuredModelManager.getModelManager();
IStructuredModel model = null;
try {
clipboard = new Clipboard(Display.getCurrent());
String pasteString = (String) clipboard.getContents(TextTransfer.getInstance());
model = modelManager.getExistingModelForEdit(doc);
model.aboutToChangeModel();
model.beginRecording(action, Messages.getString("StandardEditorActionsAction.9") + (atEnd ? Messages.getString("StandardEditorActionsAction.10") : Messages.getString("StandardEditorActionsAction.11")) + Messages.getString("StandardEditorActionsAction.12"), Messages.getString("StandardEditorActionsAction.13") + (atEnd ? Messages.getString("StandardEditorActionsAction.14") : Messages.getString("StandardEditorActionsAction.15")) + Messages.getString("StandardEditorActionsAction.16")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$ //$NON-NLS-6$ //$NON-NLS-7$ //$NON-NLS-8$
doc.replaceText(action, startOfPaste, 0, pasteString);
} finally {
if (clipboard != null) {
clipboard.dispose();
}
if (model != null) {
model.endRecording(action);
model.changedModel();
model.releaseFromEdit();
}
}
}
/*
* (non-Javadoc)
*
* @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)
*/
public void run(IAction action) {
if (action.getId().equals(StandardEditorActionsAction.CUT)) {
copy(action);
delete(action);
} else if (action.getId().equals(StandardEditorActionsAction.COPY)) {
copy(action);
} else if (action.getId().equals(StandardEditorActionsAction.PASTE_BEFORE)) {
paste(action, false);
} else if (action.getId().equals(StandardEditorActionsAction.PASTE_AFTER)) {
paste(action, true);
} else if (action.getId().equals(StandardEditorActionsAction.DELETE)) {
delete(action);
}
}
public void selectionChanged(IAction action, ISelection selection) {
this.selection = selection;
}
public void setActivePart(IAction action, IWorkbenchPart targetPart) {}
}