ScaledSliderEditPart.java

package org.csstudio.sds.components.ui.internal.editparts;

import org.csstudio.sds.components.model.ScaledSliderModel;
import org.csstudio.sds.components.ui.internal.figures.ScaledSliderFigure;
import org.csstudio.sds.ui.editparts.ExecutionMode;
import org.csstudio.sds.ui.editparts.IWidgetPropertyChangeHandler;
import org.eclipse.draw2d.IFigure;
import org.eclipse.swt.graphics.Color;

/**
 * EditPart controller for the scaled slider widget. The controller mediates
 * between {@link ScaledSliderModel} and {@link ScaledSliderFigure}.
 * 
 * @author Xihui Chen
 * 
 */
public final class ScaledSliderEditPart extends AbstractMarkedWidgetEditPart {

	/**
	 * {@inheritDoc}
	 */
	@Override
	protected IFigure doCreateFigure() {
		final ScaledSliderModel model = (ScaledSliderModel) getWidgetModel();

		ScaledSliderFigure slider = new ScaledSliderFigure();

		initializeCommonFigureProperties(slider, model);
		slider.setFillColor(getModelColor(ScaledSliderModel.PROP_FILL_COLOR));
		slider.setEffect3D(model.isEffect3D());
		slider.setFillBackgroundColor(getModelColor(ScaledSliderModel.PROP_FILLBACKGROUND_COLOR));
		slider.setThumbColor(getModelColor(ScaledSliderModel.PROP_THUMB_COLOR));
		slider.setHorizontal(model.isHorizontal());
		slider.setIncrement(model.getIncrement());
		slider.addSliderListener(new ScaledSliderFigure.IScaledSliderListener() {
			@Override
			public void sliderValueChanged(final double newValue) {
				if (getExecutionMode() == ExecutionMode.RUN_MODE) {
					model.setPropertyManualValue(ScaledSliderModel.PROP_VALUE, newValue);
				}

			}
		});

		return slider;

	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	protected void registerPropertyChangeHandlers() {
		registerCommonPropertyChangeHandlers();

		// fillColor
		setPropertyChangeHandler(ScaledSliderModel.PROP_FILL_COLOR, new ColorChangeHandler<ScaledSliderFigure>() {
			@Override
			protected void doHandle(ScaledSliderFigure figure, Color color) {
				figure.setFillColor(color);
			}
		});

		// fillBackgroundColor
		setPropertyChangeHandler(ScaledSliderModel.PROP_FILLBACKGROUND_COLOR, new ColorChangeHandler<ScaledSliderFigure>() {
			@Override
			protected void doHandle(ScaledSliderFigure figure, Color color) {
				figure.setFillBackgroundColor(color);
			}
		});

		// thumbColor
		setPropertyChangeHandler(ScaledSliderModel.PROP_THUMB_COLOR, new ColorChangeHandler<ScaledSliderFigure>() {
			@Override
			protected void doHandle(ScaledSliderFigure figure, Color color) {
				figure.setThumbColor(color);
			}
		});

		// effect 3D
		IWidgetPropertyChangeHandler effect3DHandler = new IWidgetPropertyChangeHandler() {
			@Override
			public boolean handleChange(final Object oldValue, final Object newValue, final IFigure refreshableFigure) {
				ScaledSliderFigure slider = (ScaledSliderFigure) refreshableFigure;
				slider.setEffect3D((Boolean) newValue);
				return true;
			}
		};
		setPropertyChangeHandler(ScaledSliderModel.PROP_EFFECT3D, effect3DHandler);

		// horizontal
		IWidgetPropertyChangeHandler horizontalHandler = new IWidgetPropertyChangeHandler() {
			@Override
			public boolean handleChange(final Object oldValue, final Object newValue, final IFigure refreshableFigure) {
				ScaledSliderFigure slider = (ScaledSliderFigure) refreshableFigure;
				slider.setHorizontal((Boolean) newValue);
				ScaledSliderModel model = (ScaledSliderModel) getModel();

				if ((Boolean) newValue) // from vertical to horizontal
					model.setLocation(model.getX() - model.getHeight() / 2 + model.getWidth() / 2, model.getY() + model.getHeight() / 2
							- model.getWidth() / 2);
				else
					// from horizontal to vertical
					model.setLocation(model.getX() + model.getWidth() / 2 - model.getHeight() / 2, model.getY() - model.getWidth() / 2
							+ model.getHeight() / 2);

				model.setSize(model.getHeight(), model.getWidth());

				return true;
			}
		};
		setPropertyChangeHandler(ScaledSliderModel.PROP_HORIZONTAL, horizontalHandler);

		// enabled. WidgetBaseEditPart will force the widget as disabled in edit
		// model,
		// which is not the case for the scaled slider
		IWidgetPropertyChangeHandler enableHandler = new IWidgetPropertyChangeHandler() {
			@Override
			public boolean handleChange(final Object oldValue, final Object newValue, final IFigure refreshableFigure) {
				ScaledSliderFigure slider = (ScaledSliderFigure) refreshableFigure;

				// slider.setEnabled((Boolean) newValue);
				// 2009-07-21 KM: Changed to mkae the ScaledSlider only editable
				// when the user has the permission for it
				slider.setEnabled(getWidgetModel().isAccesible());
				return true;
			}
		};
		setPropertyChangeHandler(ScaledSliderModel.PROP_ENABLED, enableHandler);

		IWidgetPropertyChangeHandler incrementHandler = new IWidgetPropertyChangeHandler() {
			@Override
			public boolean handleChange(final Object oldValue, final Object newValue, final IFigure refreshableFigure) {
				ScaledSliderFigure slider = (ScaledSliderFigure) refreshableFigure;
				slider.setIncrement((Double) newValue);
				return true;
			}
		};
		setPropertyChangeHandler(ScaledSliderModel.PROP_INCREMENT, incrementHandler);

	}

}