Java tutorial
/* * -------------------------------------------------------------------------------- * This file is part of the WSN visualization framework SpyGlass. Copyright (C) * 2004-2007 by the SwarmNet (www.swarmnet.de) project SpyGlass is free * software; you can redistribute it and/or modify it under the terms of the BSD * License. Refer to spyglass-licence.txt file in the root of the SpyGlass * source tree for further details. * -------------------------------------------------------------------------------- */ package de.uniluebeck.itm.spyglass.plugin.vectorsequencepainter; import org.eclipse.core.databinding.DataBindingContext; import org.eclipse.core.databinding.UpdateValueStrategy; import org.eclipse.core.databinding.beans.BeansObservables; import org.eclipse.core.databinding.observable.value.IObservableValue; import org.eclipse.jface.databinding.swt.ISWTObservableValue; import org.eclipse.jface.databinding.swt.SWTObservables; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.CLabel; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.RGB; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.ColorDialog; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Group; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; import com.cloudgarden.resource.SWTResourceManager; import de.uniluebeck.itm.spyglass.gui.databinding.converter.ArrayToColorConverter; import de.uniluebeck.itm.spyglass.gui.databinding.converter.ColorToArrayConverter; import de.uniluebeck.itm.spyglass.gui.databinding.validator.IntegerRangeValidator; import de.uniluebeck.itm.spyglass.xmlconfig.PluginXMLConfig; public class VectorSequencePainterOptionsComposite extends Composite { private Group group; private Text lineWidth; private CLabel lineColor; private Button buttonLineColor; private VectorSequencePainterPreferencePage page; private Text ttl; private Text dimension; { // Register as a resource user - SWTResourceManager will // handle the obtaining and disposing of resources SWTResourceManager.registerResourceUser(this); } public VectorSequencePainterOptionsComposite(final Composite parent) { super(parent, SWT.NONE); initGUI(); } private void initGUI() { GridData data; Label label; setLayout(new GridLayout()); data = new GridData(); data.horizontalAlignment = GridData.FILL; data.verticalAlignment = GridData.FILL; data.grabExcessHorizontalSpace = true; data.grabExcessVerticalSpace = true; setLayoutData(data); { data = new GridData(SWT.TOP, SWT.LEFT, true, true); data.horizontalAlignment = GridData.FILL; data.verticalAlignment = GridData.FILL; group = new Group(this, SWT.NONE); group.setLayoutData(data); group.setLayout(new GridLayout(3, false)); group.setText("Display"); { label = new Label(group, SWT.NONE); label.setText("Line width:"); data = new GridData(); data.widthHint = 40; data.horizontalSpan = 2; lineWidth = new Text(group, SWT.BORDER); lineWidth.setLayoutData(data); label = new Label(group, SWT.NONE); label.setText("Line color:"); data = new GridData(); data.widthHint = 50; data.heightHint = 19; lineColor = new CLabel(group, SWT.BORDER); lineColor.setLayoutData(data); data = new GridData(); buttonLineColor = new Button(group, SWT.PUSH | SWT.CENTER); buttonLineColor.setText("Change color"); buttonLineColor.setLayoutData(data); buttonLineColor.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(final SelectionEvent evt) { final ColorDialog dlg = new ColorDialog(getShell()); dlg.setRGB(lineColor.getBackground().getRGB()); final RGB color = dlg.open(); if (color != null) { lineColor.setBackground(new Color(getDisplay(), color)); page.markFormDirty(); } } }); label = new Label(group, SWT.NONE); label.setText("Time to live:"); data = new GridData(); data.widthHint = 40; // data.horizontalSpan = 2; ttl = new Text(group, SWT.BORDER); ttl.setLayoutData(data); label = new Label(group, SWT.NONE); label.setText("seconds"); label = new Label(group, SWT.NONE); label.setText("Dimensions:"); data = new GridData(); data.widthHint = 40; data.horizontalSpan = 2; dimension = new Text(group, SWT.BORDER); dimension.setLayoutData(data); } } } public void setDatabinding(final DataBindingContext dbc, final VectorSequencePainterXMLConfig config, final VectorSequencePainterPreferencePage page) { this.page = page; IObservableValue obsModel; ISWTObservableValue obsWidget; UpdateValueStrategy usTargetToModel; UpdateValueStrategy usModelToTarget; { obsWidget = SWTObservables.observeText(lineWidth, SWT.Modify); obsModel = BeansObservables.observeValue(dbc.getValidationRealm(), config, VectorSequencePainterXMLConfig.PROPERTYNAME_LINE_WIDTH); usTargetToModel = new UpdateValueStrategy(UpdateValueStrategy.POLICY_CONVERT); usTargetToModel.setAfterConvertValidator(new IntegerRangeValidator("Line Width", 1, Integer.MAX_VALUE)); dbc.bindValue(obsWidget, obsModel, usTargetToModel, null); } { obsWidget = SWTObservables.observeBackground(lineColor); obsModel = BeansObservables.observeValue(dbc.getValidationRealm(), config, VectorSequencePainterXMLConfig.PROPERTYNAME_LINE_COLOR_R_G_B); usTargetToModel = new UpdateValueStrategy(UpdateValueStrategy.POLICY_CONVERT); usTargetToModel.setConverter(new ColorToArrayConverter()); usModelToTarget = new UpdateValueStrategy(); usModelToTarget.setConverter(new ArrayToColorConverter(this.getDisplay())); dbc.bindValue(obsWidget, obsModel, usTargetToModel, usModelToTarget); } { obsWidget = SWTObservables.observeText(ttl, SWT.Modify); obsModel = BeansObservables.observeValue(dbc.getValidationRealm(), config, PluginXMLConfig.PROPERTYNAME_TIMEOUT); usTargetToModel = new UpdateValueStrategy(UpdateValueStrategy.POLICY_CONVERT); usTargetToModel .setAfterConvertValidator(new IntegerRangeValidator("Time To Live", 0, Integer.MAX_VALUE)); dbc.bindValue(obsWidget, obsModel, usTargetToModel, null); } { obsWidget = SWTObservables.observeText(dimension, SWT.Modify); obsModel = BeansObservables.observeValue(dbc.getValidationRealm(), config, VectorSequencePainterXMLConfig.PROPERTYNAME_DIMENSION); usTargetToModel = new UpdateValueStrategy(UpdateValueStrategy.POLICY_CONVERT); usTargetToModel.setAfterConvertValidator(new IntegerRangeValidator("Dimension", 2, 3)); dbc.bindValue(obsWidget, obsModel, usTargetToModel, null); } } }