bundles/org.eclipse.wst.jsdt.web.ui/src/org/eclipse/wst/jsdt/web/ui/actions/StandardEditorActionsAction.java - sourceediting/webtools.sourceediting - Git at Google

 /*******************************************************************************
  * Copyright (c) 2007, 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.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;
 		}
 		StringBuffer text = new StringBuffer();
 		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) {}
 }
	/*******************************************************************************
	* Copyright (c) 2007, 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.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;
	}
	StringBuffer text = new StringBuffer();
	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) {}
	}