/*******************************************************************************
* 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();
}
}