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/*******************************************************************************
* Copyright (c) 2009 Tilera 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:
* William R. Swanson (Tilera Corporation)
*******************************************************************************/
package org.eclipse.cdt.visualizer.ui.util;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.ScrolledComposite;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
// ---------------------------------------------------------------------------
// ScrollPanel
// ---------------------------------------------------------------------------
/**
* Container panel that adds scrollbar(s) to a content control.
*/
public class ScrollPanel extends ScrolledComposite
{
// --- constructors/destructors ---
/** Constructor. */
public ScrollPanel(Composite parent)
{
this(parent, null, true, true);
}
/** Constructor. */
public ScrollPanel(Composite parent, boolean hscrollbar, boolean vscrollbar)
{
this(parent, null, hscrollbar, vscrollbar);
}
/** Constructor. */
public ScrollPanel(Composite parent, Control contentControl, boolean hscrollbar, boolean vscrollbar)
{
super(parent, ((hscrollbar) ? SWT.H_SCROLL : SWT.NONE) |
((vscrollbar) ? SWT.V_SCROLL : SWT.NONE));
initScrollPanel(contentControl, hscrollbar, vscrollbar);
}
/** Dispose method. */
public void dispose() {
cleanupScrollPanel();
super.dispose();
}
/** Overridden to permit subclassing */
protected void checkSubclass() {
// do nothing -- superclass implementation throws a "Subclassing not allowed" exception
}
// --- init methods ---
/** Initializes control */
protected void initScrollPanel(Control contentControl, boolean hscrollbar, boolean vscrollbar) {
setMinSize(0,0);
setShowFocusedControl(true);
// If user doesn't want either scrollbar, we'll auto-size in that direction by default.
setAutoResizeWidth(! hscrollbar);
setAutoResizeHeight(! vscrollbar);
if (contentControl != null) setContent(contentControl);
}
/** Cleans up control */
protected void cleanupScrollPanel() {
}
// --- methods ---
/** Sets whether ScrollPanel auto-resizes the width of its contained control
* to match the size of the scrollpanel's content area, save when the control
* is smaller than the minimum width. (This also implicitly disables/hides
* the scrollbar when the control is auto-sized.)
*/
public void setAutoResizeWidth(boolean resizeWidth) {
setExpandHorizontal(resizeWidth);
}
/** Sets whether ScrollPanel auto-resizes the height of its contained control
* to match the size of the scrollpanel's content area, save when the control
* is smaller than the minimum width. (This also implicitly disables/hides
* the scrollbar when the control is auto-sized.)
*/
public void setAutoResizeHeight(boolean resizeHeight) {
setExpandVertical(resizeHeight);
}
}
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