/*******************************************************************************
* 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.tableedit;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.geometry.Insets;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.GraphicalEditPart;
import org.eclipse.gef.Request;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.tools.DragEditPartsTracker;
import org.eclipse.jst.pagedesigner.editpolicies.ITableEditAdapter;
/**
* This is the drag tracker for the small resize item on the
* TableSideResizeHandle. used to adjust a single column/row size.
*
* @author mengbo
* @version 1.5
*/
public class TableSideResizeDragTracker extends DragEditPartsTracker {
private boolean _isrow;
private int _index;
private MarqueeRectangleFigure _marqueeFigure;
/**
* @param sourceEditPart
* @param isrow
* @param index
*/
public TableSideResizeDragTracker(EditPart sourceEditPart, boolean isrow,
int index) {
super(sourceEditPart);
this._isrow = isrow;
this._index = index;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.gef.tools.DragEditPartsTracker#showSourceFeedback()
*/
protected void showSourceFeedback() {
Rectangle rect = getFeedbackRect();
if (rect != null) {
rect = rect.getCopy();
getMarqueeRectangleFigure().setBounds(rect);
} else {
// ignore.
}
}
private int calculateDelta() {
int delta;
// FIXME: TODO: XXX: when delta is too small (<0) to make previous
// column/row
// to have negative size, then we need adjust delta.
if (_isrow) {
delta = getLocation().y - getStartLocation().y;
} else {
delta = getLocation().x - getStartLocation().x;
}
return delta;
}
/**
* @return null if this is not a table.
*/
private Rectangle getFeedbackRect() {
ITableEditAdapter adapter = getTableEditAdapter();
if (adapter == null) {
return null;
}
IFigure figure = ((GraphicalEditPart) this.getSourceEditPart())
.getFigure();
Rectangle bounds = figure.getBounds();
Insets insets = figure.getInsets();
Rectangle rect;
if (_isrow) {
int delta = calculateDelta();
rect = new Rectangle(0, adapter.getRowResizeStart(_index) + delta,
bounds.width - insets.getWidth(), adapter
.getRowResizeWidth());
} else {
int delta = calculateDelta();
rect = new Rectangle(adapter.getColumnResizeStart(_index) + delta,
0, adapter.getColumnResizeWidth(), bounds.height
- insets.getHeight());
}
rect.translate(bounds.x + insets.left, bounds.y + insets.top);
figure.translateToAbsolute(rect);
getMarqueeRectangleFigure().translateToRelative(rect);
return rect;
}
/**
*
* @return null if this is not a table.
*/
private ITableEditAdapter getTableEditAdapter() {
return TableEditHelper.getTableEditAdapter((GraphicalEditPart) this
.getSourceEditPart());
}
/*
* (non-Javadoc)
*
* @see org.eclipse.gef.tools.DragEditPartsTracker#eraseSourceFeedback()
*/
protected void eraseSourceFeedback() {
super.eraseSourceFeedback();
if (_marqueeFigure != null) {
removeFeedback(_marqueeFigure);
_marqueeFigure = null;
}
}
private MarqueeRectangleFigure getMarqueeRectangleFigure() {
if (this._marqueeFigure == null) {
this._marqueeFigure = new MarqueeRectangleFigure();
addFeedback(this._marqueeFigure);
}
return this._marqueeFigure;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.gef.tools.DragEditPartsTracker#createTargetRequest()
*/
protected Request createTargetRequest() {
return new TableResizeRequest(this._isrow, this._index);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.gef.tools.DragEditPartsTracker#updateTargetRequest()
*/
protected void updateTargetRequest() {
TableResizeRequest req = (TableResizeRequest) getTargetRequest();
req.setDelta(calculateDelta());
}
/*
* (non-Javadoc)
*
* @see org.eclipse.gef.tools.SelectEditPartTracker#handleButtonDown(int)
*/
protected boolean handleButtonDown(int button) {
lockTargetEditPart(getSourceEditPart());
return super.handleButtonDown(button);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.gef.tools.DragEditPartsTracker#getCommand()
*/
protected Command getCommand() {
return getTargetEditPart().getCommand(getTargetRequest());
}
}