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/**
* Copyright (c) 2004 - 2009 Eike Stepper (Berlin, Germany) 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:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.net4j.util.ui.widgets;
import org.eclipse.net4j.util.ui.UIUtil;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
/**
* @author Eike Stepper
* @since 2.0
*/
public abstract class OneBorderComposite extends Composite
{
private static final int POSITION_MASK = SWT.LEFT | SWT.RIGHT | SWT.TOP | SWT.BOTTOM;
private int borderPosition;
private Control border;
private Control clientControl;
private GridLayout layout;
private GridData borderData;
private GridData clientControlData;
public OneBorderComposite(Composite parent)
{
super(parent, SWT.NONE);
layout = UIUtil.createGridLayout(1);
setLayout(layout);
clientControlData = UIUtil.createGridData();
clientControl = createUI(this);
clientControl.setLayoutData(clientControlData);
}
public OneBorderComposite(Composite parent, int borderPosition)
{
this(parent);
setBorderPosition(borderPosition);
}
public Control getClientControl()
{
return clientControl;
}
public int getBorderPosition()
{
return borderPosition;
}
public void setBorderPosition(int borderPosition)
{
borderPosition = borderPosition & POSITION_MASK;
if (Integer.bitCount(borderPosition) != 1)
{
throw new IllegalArgumentException("borderPosition: " + borderPosition); //$NON-NLS-1$
}
if (this.borderPosition != borderPosition)
{
this.borderPosition = borderPosition;
switch (borderPosition)
{
case SWT.LEFT:
setBorder(true, true);
break;
case SWT.RIGHT:
setBorder(true, false);
break;
case SWT.TOP:
setBorder(false, true);
break;
case SWT.BOTTOM:
setBorder(false, false);
break;
default:
return;
}
layout();
}
}
public void swapBorderPosition()
{
switch (borderPosition)
{
case SWT.LEFT:
setBorderPosition(SWT.TOP);
break;
case SWT.RIGHT:
setBorderPosition(SWT.BOTTOM);
break;
case SWT.TOP:
setBorderPosition(SWT.LEFT);
break;
case SWT.BOTTOM:
setBorderPosition(SWT.RIGHT);
break;
}
}
@Override
public String toString()
{
switch (borderPosition)
{
case SWT.LEFT:
return "LEFT"; //$NON-NLS-1$
case SWT.RIGHT:
return "RIGHT"; //$NON-NLS-1$
case SWT.TOP:
return "TOP"; //$NON-NLS-1$
case SWT.BOTTOM:
return "BOTTOM"; //$NON-NLS-1$
}
return super.toString();
}
protected abstract Control createUI(Composite parent);
private void setBorder(boolean vertical, boolean beginning)
{
if (border != null)
{
border.dispose();
}
layout.numColumns = vertical ? 2 : 1;
borderData = UIUtil.createGridData();
borderData.widthHint = vertical ? 1 : SWT.DEFAULT;
borderData.heightHint = vertical ? SWT.DEFAULT : 1;
borderData.grabExcessHorizontalSpace = !vertical;
borderData.grabExcessVerticalSpace = vertical;
int orientation = vertical ? SWT.VERTICAL : SWT.HORIZONTAL;
border = new Label(this, SWT.SEPARATOR | orientation);
border.setLayoutData(borderData);
if (beginning)
{
border.moveAbove(null);
}
}
}
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