jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/tools/RangeSelectionTool.java - jsf/webtools.jsf - Git at Google

 /*******************************************************************************
  * Copyright (c) 2006 Sybase, Inc. 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:
  *     Sybase, Inc. - initial API and implementation
  *******************************************************************************/
 package org.eclipse.jst.pagedesigner.tools;

 import org.eclipse.gef.DragTracker;
 import org.eclipse.gef.EditPart;
 import org.eclipse.gef.Request;
 import org.eclipse.gef.RequestConstants;
 import org.eclipse.gef.commands.Command;
 import org.eclipse.gef.requests.LocationRequest;
 import org.eclipse.gef.tools.SelectionTool;
 import org.eclipse.jface.viewers.ISelection;
 import org.eclipse.jface.viewers.StructuredSelection;
 import org.eclipse.jst.pagedesigner.commands.DeleteNodeCommand;
 import org.eclipse.jst.pagedesigner.commands.SwitchSelectionCommand;
 import org.eclipse.jst.pagedesigner.commands.nav.HorizontalMoveCommand;
 import org.eclipse.jst.pagedesigner.commands.nav.ICaretPositionMover;
 import org.eclipse.jst.pagedesigner.commands.nav.VerticalMoveCommand;
 import org.eclipse.jst.pagedesigner.commands.range.CopyCommand;
 import org.eclipse.jst.pagedesigner.commands.range.CutCommand;
 import org.eclipse.jst.pagedesigner.commands.range.DeleteCommand;
 import org.eclipse.jst.pagedesigner.commands.range.InsertCommand;
 import org.eclipse.jst.pagedesigner.commands.range.KeyboardData;
 import org.eclipse.jst.pagedesigner.commands.range.PasteCommand;
 import org.eclipse.jst.pagedesigner.commands.range.SelectAllCommand;
 import org.eclipse.jst.pagedesigner.editors.pagedesigner.PageDesignerResources;
 import org.eclipse.jst.pagedesigner.parts.DocumentEditPart;
 import org.eclipse.jst.pagedesigner.parts.NodeEditPart;
 import org.eclipse.jst.pagedesigner.requests.LocationModifierRequest;
 import org.eclipse.jst.pagedesigner.viewer.IHTMLGraphicalViewer;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.KeyEvent;
 import org.eclipse.swt.graphics.Cursor;

 /**
  * @author mengbo
  */
 public class RangeSelectionTool extends SelectionTool
 {
 	private LocationRequest _hoverRequest;


 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.gef.tools.SelectionTool#handleKeyDown(org.eclipse.swt.events.KeyEvent)
 	 */
 	protected boolean handleKeyDown(KeyEvent e) {
 		// resetHover() is not visible.
 		if (isHoverActive()) {
 			handleHoverStop();
 		}
 		setHoverActive(false);

 		if ((e.stateMask & SWT.ALT) != 0) {
 			return false;
 		}
 		Command command = null;
 		KeyboardData keyCode = null;
 		switch (e.keyCode) {
 		case SWT.F2:
 			command = new SwitchSelectionCommand((IHTMLGraphicalViewer) this
 					.getCurrentViewer());

 			break;
 		case SWT.ARROW_UP:
 			command = new VerticalMoveCommand((IHTMLGraphicalViewer) this
 					.getCurrentViewer(), true, (e.stateMask & SWT.SHIFT) != 0);
 			break;
 		case SWT.ARROW_DOWN:
 			command = new VerticalMoveCommand((IHTMLGraphicalViewer) this
 					.getCurrentViewer(), false, (e.stateMask & SWT.SHIFT) != 0);
 			break;
 		case SWT.ARROW_LEFT:
 			command = new HorizontalMoveCommand((IHTMLGraphicalViewer) this
 					.getCurrentViewer(), false, (e.stateMask & SWT.SHIFT) != 0);
 			break;
 		case SWT.ARROW_RIGHT:
 			command = new HorizontalMoveCommand((IHTMLGraphicalViewer) this
 					.getCurrentViewer(), true, (e.stateMask & SWT.SHIFT) != 0);
 			break;
 		case SWT.DEL:
 			if ((e.stateMask & SWT.SHIFT) == 0) {
 				if (getCurrentViewer().getSelection() != null) {
 					ISelection selection = getCurrentViewer().getSelection();
 					if (selection instanceof StructuredSelection) {
 						Object object = ((StructuredSelection) selection)
 								.getFirstElement();
 						if (!(object instanceof DocumentEditPart)) {
 							// "delete node"
 							command = new DeleteNodeCommand(
 									(IHTMLGraphicalViewer) getCurrentViewer());
 						}
 					}
 				}
 				if (command == null) {
 					// "delete"
 					command = new DeleteCommand(true,
 							(IHTMLGraphicalViewer) this.getCurrentViewer());
 				}
 			} else {
 				// "cut"
 				command = new CutCommand((IHTMLGraphicalViewer) this
 						.getCurrentViewer());
 				e.doit = false;
 			}
 			break;
 		case SWT.BS:
 			// "delete"
 			command = new DeleteCommand(false, (IHTMLGraphicalViewer) this
 					.getCurrentViewer());
 			e.doit = false;
 			break;
 		case SWT.INSERT:
 			if ((e.stateMask & SWT.SHIFT) != 0) {
 				// "paste"
 				command = new PasteCommand((IHTMLGraphicalViewer) this
 						.getCurrentViewer());
 				e.doit = false;
 				break;
 			} else if ((e.stateMask & SWT.CONTROL) != 0) {
 				// "copy"
 				command = new CopyCommand((IHTMLGraphicalViewer) this
 						.getCurrentViewer());
 				e.doit = false;
 				break;
 			}
 			break;
 		case SWT.LF:
 		case SWT.CR:
 			// "insert"
 			keyCode = new KeyboardData(e.character, e.stateMask,
 					(IHTMLGraphicalViewer) getCurrentViewer());
 			command = new InsertCommand(
 					PageDesignerResources.getInstance().getString(
 							"RangeSelectionTool.CommandLabel.Insert"), (IHTMLGraphicalViewer) this.getCurrentViewer(), keyCode); //$NON-NLS-1$
 			e.doit = false;
 			break;
 		default:
 			if (e.keyCode == 'a' && (e.stateMask & SWT.CTRL) != 0) {
 				command = new SelectAllCommand("selectAll", //$NON-NLS-1$
 						(IHTMLGraphicalViewer) this.getCurrentViewer());
 				e.doit = false;
 			} else {
 				if (getCurrentViewer() instanceof IHTMLGraphicalViewer
 						&& ((IHTMLGraphicalViewer) getCurrentViewer())
 								.isInRangeMode()
 						&& (!Character.isIdentifierIgnorable(e.character) && !Character
 								.isISOControl(e.character))
 						|| (e.character == '\r')) {
 					keyCode = new KeyboardData(e.character, e.stateMask,
 							(IHTMLGraphicalViewer) getCurrentViewer());
 					// "insert"
 					command = new InsertCommand(
 							PageDesignerResources.getInstance().getString(
 									"RangeSelectionTool.CommandLabel.Insert"), (IHTMLGraphicalViewer) this.getCurrentViewer(), keyCode); //$NON-NLS-1$
 					e.doit = false;
 					break;
 				}
                 return super.handleKeyDown(e);
 			}
 		}
 		if (command != null) {
 			command.execute();
 			e.doit = false;
 			if (command instanceof ICaretPositionMover) {
 				if (getCurrentViewer() instanceof IHTMLGraphicalViewer) {
 					((IHTMLGraphicalViewer) getCurrentViewer())
 							.updateHorizontalPos();
 				}
 			}
 			return true;
 		}
 		return false;
 	}

 	// /**
 	// * @param e
 	// * @return
 	// */
 	// protected boolean handleRangeModeKeyDown(KeyEvent e)
 	// {
 	// if (e.keyCode == SWT.SHIFT || e.keyCode == SWT.CONTROL || e.keyCode ==
 	// SWT.ALT)
 	// {
 	// return false;
 	// }
 	//
 	// dumpKey(e);
 	// Command command = null;
 	// switch (e.keyCode)
 	// {
 	// case SWT.ARROW_LEFT:
 	// command = new HorizontalMoveCommand((IHTMLGraphicalViewer)
 	// this.getCurrentViewer(), false,
 	// (e.stateMask & SWT.SHIFT) != 0);
 	// break;
 	// case SWT.ARROW_RIGHT:
 	// command = new HorizontalMoveCommand((IHTMLGraphicalViewer)
 	// this.getCurrentViewer(), true,
 	// (e.stateMask & SWT.SHIFT) != 0);
 	// break;
 	//
 	// }
 	// if (command != null)
 	// {
 	// command.execute();
 	// return true;
 	// }
 	//
 	// char content = e.character;
 	//
 	// // when reach here, should be standard content keys.
 	// return handleRangeModeContentChar(content);
 	// }
 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.gef.tools.SelectionTool#createHoverRequest()
 	 */
 	protected void createHoverRequest() {
 		this._hoverRequest = new LocationModifierRequest();
 		_hoverRequest.setType(RequestConstants.REQ_SELECTION_HOVER);
 	}

 	protected Request getTargetHoverRequest() {
 		if (_hoverRequest == null) {
 			createHoverRequest();
 		}
 		return _hoverRequest;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.gef.tools.SelectionTool#updateHoverRequest()
 	 */
 	protected void updateHoverRequest() {
 		LocationModifierRequest request = (LocationModifierRequest) getTargetHoverRequest();
 		request.setLocation(getLocation());
 		request.setControlKeyPressed(getCurrentInput().isControlKeyDown());
 	}

     /*
      * If the target edit part is a NodeEditPart, then inform it if of the current
      * drag status before calling its hover feedback
      */
     protected void showHoverFeedback()
     {
         if (getTargetEditPart() instanceof NodeEditPart)
         {
             ((NodeEditPart)getTargetEditPart())
                 .setDragActive(
                         isInState(STATE_DRAG_IN_PROGRESS
                                 | STATE_ACCESSIBLE_DRAG_IN_PROGRESS
                                 | STATE_DRAG));
         }
         super.showHoverFeedback();
     }

     // TODO : this method is for debug purposes and should
     // be removed in production
 //    protected boolean updateTargetUnderMouse() {
 //        EditPart editPart = getTargetEditPart();
 //        boolean retValue =  super.updateTargetUnderMouse();
 //        if (getTargetEditPart() != editPart)
 //        {
 //            System.out.println("New target editpart:  "+getTargetEditPart()+" Old edit part: "+editPart);
 //        }
 //        return retValue;
 //    }

     protected boolean handleMove() {
         boolean handled =  super.handleMove();
         EditPart targetEditPart = getTargetEditPart();

         if (isInState(STATE_INITIAL)
                 && targetEditPart instanceof NodeEditPart)
         {
             LocationRequest request = new LocationRequest(org.eclipse.jst.pagedesigner.requests.PageDesignerRequestConstants.REQ_SELECTION_TRACKER);
             request.setLocation(getLocation());
             DragTracker selectionTracker = targetEditPart.getDragTracker(request);
             setDragTracker(selectionTracker);
         }

         return handled;
     }

     protected Cursor calculateCursor() {
         EditPart targetEditPart = getTargetEditPart();
         if (isInState(STATE_INITIAL)
                && targetEditPart instanceof NodeEditPart)
         {
             final Cursor  nodeCursor =
                 ((NodeEditPart)targetEditPart).getCursor(getLocation());

             // if the edit part specified a custom cursor and there is no
             // active drag tracker (which would otherwise manage cursor)
             // then set the custom cursor
             // if we fall-through, the default behaviour will be used
             if (nodeCursor != null
                     && getDragTracker() == null)
             {
                 return nodeCursor;
             }
         }
         // otherwise, use super's defaults
         return super.calculateCursor();
     }
 }
	/*******************************************************************************
	* Copyright (c) 2006 Sybase, Inc. 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:
	* Sybase, Inc. - initial API and implementation
	*******************************************************************************/
	package org.eclipse.jst.pagedesigner.tools;

	import org.eclipse.gef.DragTracker;
	import org.eclipse.gef.EditPart;
	import org.eclipse.gef.Request;
	import org.eclipse.gef.RequestConstants;
	import org.eclipse.gef.commands.Command;
	import org.eclipse.gef.requests.LocationRequest;
	import org.eclipse.gef.tools.SelectionTool;
	import org.eclipse.jface.viewers.ISelection;
	import org.eclipse.jface.viewers.StructuredSelection;
	import org.eclipse.jst.pagedesigner.commands.DeleteNodeCommand;
	import org.eclipse.jst.pagedesigner.commands.SwitchSelectionCommand;
	import org.eclipse.jst.pagedesigner.commands.nav.HorizontalMoveCommand;
	import org.eclipse.jst.pagedesigner.commands.nav.ICaretPositionMover;
	import org.eclipse.jst.pagedesigner.commands.nav.VerticalMoveCommand;
	import org.eclipse.jst.pagedesigner.commands.range.CopyCommand;
	import org.eclipse.jst.pagedesigner.commands.range.CutCommand;
	import org.eclipse.jst.pagedesigner.commands.range.DeleteCommand;
	import org.eclipse.jst.pagedesigner.commands.range.InsertCommand;
	import org.eclipse.jst.pagedesigner.commands.range.KeyboardData;
	import org.eclipse.jst.pagedesigner.commands.range.PasteCommand;
	import org.eclipse.jst.pagedesigner.commands.range.SelectAllCommand;
	import org.eclipse.jst.pagedesigner.editors.pagedesigner.PageDesignerResources;
	import org.eclipse.jst.pagedesigner.parts.DocumentEditPart;
	import org.eclipse.jst.pagedesigner.parts.NodeEditPart;
	import org.eclipse.jst.pagedesigner.requests.LocationModifierRequest;
	import org.eclipse.jst.pagedesigner.viewer.IHTMLGraphicalViewer;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.KeyEvent;
	import org.eclipse.swt.graphics.Cursor;

	/**
	* @author mengbo
	*/
	public class RangeSelectionTool extends SelectionTool
	{
	private LocationRequest _hoverRequest;


	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.gef.tools.SelectionTool#handleKeyDown(org.eclipse.swt.events.KeyEvent)
	*/
	protected boolean handleKeyDown(KeyEvent e) {
	// resetHover() is not visible.
	if (isHoverActive()) {
	handleHoverStop();
	}
	setHoverActive(false);

	if ((e.stateMask & SWT.ALT) != 0) {
	return false;
	}
	Command command = null;
	KeyboardData keyCode = null;
	switch (e.keyCode) {
	case SWT.F2:
	command = new SwitchSelectionCommand((IHTMLGraphicalViewer) this
	.getCurrentViewer());

	break;
	case SWT.ARROW_UP:
	command = new VerticalMoveCommand((IHTMLGraphicalViewer) this
	.getCurrentViewer(), true, (e.stateMask & SWT.SHIFT) != 0);
	break;
	case SWT.ARROW_DOWN:
	command = new VerticalMoveCommand((IHTMLGraphicalViewer) this
	.getCurrentViewer(), false, (e.stateMask & SWT.SHIFT) != 0);
	break;
	case SWT.ARROW_LEFT:
	command = new HorizontalMoveCommand((IHTMLGraphicalViewer) this
	.getCurrentViewer(), false, (e.stateMask & SWT.SHIFT) != 0);
	break;
	case SWT.ARROW_RIGHT:
	command = new HorizontalMoveCommand((IHTMLGraphicalViewer) this
	.getCurrentViewer(), true, (e.stateMask & SWT.SHIFT) != 0);
	break;
	case SWT.DEL:
	if ((e.stateMask & SWT.SHIFT) == 0) {
	if (getCurrentViewer().getSelection() != null) {
	ISelection selection = getCurrentViewer().getSelection();
	if (selection instanceof StructuredSelection) {
	Object object = ((StructuredSelection) selection)
	.getFirstElement();
	if (!(object instanceof DocumentEditPart)) {
	// "delete node"
	command = new DeleteNodeCommand(
	(IHTMLGraphicalViewer) getCurrentViewer());
	}
	}
	}
	if (command == null) {
	// "delete"
	command = new DeleteCommand(true,
	(IHTMLGraphicalViewer) this.getCurrentViewer());
	}
	} else {
	// "cut"
	command = new CutCommand((IHTMLGraphicalViewer) this
	.getCurrentViewer());
	e.doit = false;
	}
	break;
	case SWT.BS:
	// "delete"
	command = new DeleteCommand(false, (IHTMLGraphicalViewer) this
	.getCurrentViewer());
	e.doit = false;
	break;
	case SWT.INSERT:
	if ((e.stateMask & SWT.SHIFT) != 0) {
	// "paste"
	command = new PasteCommand((IHTMLGraphicalViewer) this
	.getCurrentViewer());
	e.doit = false;
	break;
	} else if ((e.stateMask & SWT.CONTROL) != 0) {
	// "copy"
	command = new CopyCommand((IHTMLGraphicalViewer) this
	.getCurrentViewer());
	e.doit = false;
	break;
	}
	break;
	case SWT.LF:
	case SWT.CR:
	// "insert"
	keyCode = new KeyboardData(e.character, e.stateMask,
	(IHTMLGraphicalViewer) getCurrentViewer());
	command = new InsertCommand(
	PageDesignerResources.getInstance().getString(
	"RangeSelectionTool.CommandLabel.Insert"), (IHTMLGraphicalViewer) this.getCurrentViewer(), keyCode); //$NON-NLS-1$
	e.doit = false;
	break;
	default:
	if (e.keyCode == 'a' && (e.stateMask & SWT.CTRL) != 0) {
	command = new SelectAllCommand("selectAll", //$NON-NLS-1$
	(IHTMLGraphicalViewer) this.getCurrentViewer());
	e.doit = false;
	} else {
	if (getCurrentViewer() instanceof IHTMLGraphicalViewer
	&& ((IHTMLGraphicalViewer) getCurrentViewer())
	.isInRangeMode()
	&& (!Character.isIdentifierIgnorable(e.character) && !Character
	.isISOControl(e.character))
	\|\| (e.character == '\r')) {
	keyCode = new KeyboardData(e.character, e.stateMask,
	(IHTMLGraphicalViewer) getCurrentViewer());
	// "insert"
	command = new InsertCommand(
	PageDesignerResources.getInstance().getString(
	"RangeSelectionTool.CommandLabel.Insert"), (IHTMLGraphicalViewer) this.getCurrentViewer(), keyCode); //$NON-NLS-1$
	e.doit = false;
	break;
	}
	return super.handleKeyDown(e);
	}
	}
	if (command != null) {
	command.execute();
	e.doit = false;
	if (command instanceof ICaretPositionMover) {
	if (getCurrentViewer() instanceof IHTMLGraphicalViewer) {
	((IHTMLGraphicalViewer) getCurrentViewer())
	.updateHorizontalPos();
	}
	}
	return true;
	}
	return false;
	}

	// /**
	// * @param e
	// * @return
	// */
	// protected boolean handleRangeModeKeyDown(KeyEvent e)
	// {
	// if (e.keyCode == SWT.SHIFT \|\| e.keyCode == SWT.CONTROL \|\| e.keyCode ==
	// SWT.ALT)
	// {
	// return false;
	// }
	//
	// dumpKey(e);
	// Command command = null;
	// switch (e.keyCode)
	// {
	// case SWT.ARROW_LEFT:
	// command = new HorizontalMoveCommand((IHTMLGraphicalViewer)
	// this.getCurrentViewer(), false,
	// (e.stateMask & SWT.SHIFT) != 0);
	// break;
	// case SWT.ARROW_RIGHT:
	// command = new HorizontalMoveCommand((IHTMLGraphicalViewer)
	// this.getCurrentViewer(), true,
	// (e.stateMask & SWT.SHIFT) != 0);
	// break;
	//
	// }
	// if (command != null)
	// {
	// command.execute();
	// return true;
	// }
	//
	// char content = e.character;
	//
	// // when reach here, should be standard content keys.
	// return handleRangeModeContentChar(content);
	// }
	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.gef.tools.SelectionTool#createHoverRequest()
	*/
	protected void createHoverRequest() {
	this._hoverRequest = new LocationModifierRequest();
	_hoverRequest.setType(RequestConstants.REQ_SELECTION_HOVER);
	}

	protected Request getTargetHoverRequest() {
	if (_hoverRequest == null) {
	createHoverRequest();
	}
	return _hoverRequest;
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.gef.tools.SelectionTool#updateHoverRequest()
	*/
	protected void updateHoverRequest() {
	LocationModifierRequest request = (LocationModifierRequest) getTargetHoverRequest();
	request.setLocation(getLocation());
	request.setControlKeyPressed(getCurrentInput().isControlKeyDown());
	}

	/*
	* If the target edit part is a NodeEditPart, then inform it if of the current
	* drag status before calling its hover feedback
	*/
	protected void showHoverFeedback()
	{
	if (getTargetEditPart() instanceof NodeEditPart)
	{
	((NodeEditPart)getTargetEditPart())
	.setDragActive(
	isInState(STATE_DRAG_IN_PROGRESS
	\| STATE_ACCESSIBLE_DRAG_IN_PROGRESS
	\| STATE_DRAG));
	}
	super.showHoverFeedback();
	}

	// TODO : this method is for debug purposes and should
	// be removed in production
	// protected boolean updateTargetUnderMouse() {
	// EditPart editPart = getTargetEditPart();
	// boolean retValue = super.updateTargetUnderMouse();
	// if (getTargetEditPart() != editPart)
	// {
	// System.out.println("New target editpart: "+getTargetEditPart()+" Old edit part: "+editPart);
	// }
	// return retValue;
	// }

	protected boolean handleMove() {
	boolean handled = super.handleMove();
	EditPart targetEditPart = getTargetEditPart();

	if (isInState(STATE_INITIAL)
	&& targetEditPart instanceof NodeEditPart)
	{
	LocationRequest request = new LocationRequest(org.eclipse.jst.pagedesigner.requests.PageDesignerRequestConstants.REQ_SELECTION_TRACKER);
	request.setLocation(getLocation());
	DragTracker selectionTracker = targetEditPart.getDragTracker(request);
	setDragTracker(selectionTracker);
	}

	return handled;
	}

	protected Cursor calculateCursor() {
	EditPart targetEditPart = getTargetEditPart();
	if (isInState(STATE_INITIAL)
	&& targetEditPart instanceof NodeEditPart)
	{
	final Cursor nodeCursor =
	((NodeEditPart)targetEditPart).getCursor(getLocation());

	// if the edit part specified a custom cursor and there is no
	// active drag tracker (which would otherwise manage cursor)
	// then set the custom cursor
	// if we fall-through, the default behaviour will be used
	if (nodeCursor != null
	&& getDragTracker() == null)
	{
	return nodeCursor;
	}
	}
	// otherwise, use super's defaults
	return super.calculateCursor();
	}
	}