/**
* Copyright (c) 2014 - 2017 Frank Appel
* 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:
* Frank Appel - initial API and implementation
*/
package com.codeaffine.eclipse.swt.widget.scrollable;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Layout;
import com.codeaffine.eclipse.swt.widget.scrollable.context.AdaptionContext;
import com.codeaffine.eclipse.swt.widget.scrollable.context.Reconciliation;
import com.codeaffine.eclipse.swt.widget.scrollbar.FlatScrollBar;
class ScrollableLayout extends Layout {
private final ScrollableLayouter scrollableLayouter;
private final OverlayLayouter overlayLayouter;
private final Reconciliation reconciliation;
private final AdaptionContext<?> context;
ScrollableLayout( AdaptionContext<?> context,
ScrollableLayouter scrollableLayouter,
FlatScrollBar horizontal,
FlatScrollBar vertical,
Label cornerOverlay )
{
this( context,
new OverlayLayouter( horizontal, vertical, cornerOverlay ),
scrollableLayouter,
context.getReconciliation() );
}
ScrollableLayout( AdaptionContext<?> context,
OverlayLayouter overlayLayouter,
ScrollableLayouter scrollableLayouter,
Reconciliation reconciliation )
{
this.context = context;
this.overlayLayouter = overlayLayouter;
this.scrollableLayouter = scrollableLayouter;
this.reconciliation = reconciliation;
}
@Override
protected void layout( Composite composite, boolean flushCache ) {
reconciliation.runWhileSuspended( () -> layout() );
}
@Override
protected Point computeSize( Composite composite, int wHint, int hHint, boolean flushCache ) {
return context.getScrollable().computeSize( wHint, hHint, flushCache );
}
private void layout() {
scrollableLayouter.layout( context.newContext() );
overlayLayouter.layout( context.newContext() );
}
}