NatTable/src/org/eclipse/nebula/widgets/nattable/renderer/swt/SWTNatTable.xtend

package org.eclipse.nebula.widgets.nattable.renderer.swt

import org.eclipse.nebula.widgets.nattable.core.layer.Layer
import org.eclipse.nebula.widgets.nattable.renderer.swt.layer.impl.GridLineCellLayerRenderer
import org.eclipse.swt.SWT
import org.eclipse.swt.events.DisposeEvent
import org.eclipse.swt.events.PaintEvent
import org.eclipse.swt.graphics.GC
import org.eclipse.swt.widgets.Canvas
import org.eclipse.swt.widgets.Composite

class SWTNatTable extends Canvas {

	static val int DEFAULT_STYLE_OPTIONS = SWT::NO_BACKGROUND.bitwiseOr(SWT::NO_REDRAW_RESIZE).bitwiseOr(SWT::DOUBLE_BUFFERED).bitwiseOr(SWT::V_SCROLL).bitwiseOr(SWT::H_SCROLL)
	static val defaultLayerRenderer = new GridLineCellLayerRenderer

	Layer layer

	new(Composite parent) {
		this(parent, DEFAULT_STYLE_OPTIONS)
	}

	new(Composite parent, int style) {
		super(parent, style)
	}
	
	def void setLayer(Layer layer) {
		this.layer = layer
		
		addPaintListener([ PaintEvent event | renderLayer(event.gc) ])
		addDisposeListener([ DisposeEvent event | layer.layerRenderer.dispose ])
	}
	
	private def renderLayer(GC gc) {
		layer.layerRenderer.renderLayer(layer, gc)
	}
	
	private def getLayerRenderer(Layer layer) {
		defaultLayerRenderer
	}
	
}