Merge pull request #340 from eclipse/bugfix/Issue_328_DualList_should…

…_be_configuable

Issue 328 -  DualList should be configuable

widgets/opal/duallist/org.eclipse.nebula.widgets.opal.duallist.snippets/src/org/eclipse/nebula/widgets/opal/duallist/snippets/DualListSnippet.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2011 Laurent CARON.
+ * Copyright (c) 2011-2021 Laurent CARON.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
@@ -28,7 +28,7 @@
 import org.eclipse.swt.widgets.Shell;
 
 /**
- * A simple snipper for the ItemSelector Widget
+ * A simple snipper for the DualList Widget
  *
  */
 public class DualListSnippet {

widgets/opal/duallist/org.eclipse.nebula.widgets.opal.duallist.snippets/src/org/eclipse/nebula/widgets/opal/duallist/snippets/DualListTextSnippet.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2011 Laurent CARON.
+ * Copyright (c) 2011-2021 Laurent CARON.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
@@ -15,21 +15,34 @@
 import java.util.ArrayList;
 import java.util.List;
 
+import org.eclipse.nebula.widgets.opal.commons.SWTGraphicUtil;
+import org.eclipse.nebula.widgets.opal.duallist.DLConfiguration;
 import org.eclipse.nebula.widgets.opal.duallist.DLItem;
 import org.eclipse.nebula.widgets.opal.duallist.DualList;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.graphics.Font;
 import org.eclipse.swt.graphics.FontData;
+import org.eclipse.swt.graphics.Image;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
+import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Display;
 import org.eclipse.swt.widgets.Shell;
 
 /**
- * A simple snipper for the ItemSelector Widget
+ * A simple snipper for the DualList Widget
  *
  */
 public class DualListTextSnippet {
+	private static final String DOUBLE_DOWN_IMAGE = "double_down.png";
+	private static final String DOUBLE_UP_IMAGE = "double_up.png";
+	private static final String DOUBLE_LEFT_IMAGE = "double_left.png";
+	private static final String DOUBLE_RIGHT_IMAGE = "double_right.png";
+	private static final String ARROW_DOWN_IMAGE = "arrow_down.png";
+	private static final String ARROW_LEFT_IMAGE = "arrow_left.png";
+	private static final String ARROW_UP_IMAGE = "arrow_up.png";
+	private static final String ARROW_RIGHT_IMAGE = "arrow_right.png";
+	private static DualList dl;
 
 	public static void main(final String[] args) {
 		final Display display = new Display();
@@ -38,14 +51,38 @@ public static void main(final String[] args) {
 		shell.setSize(600, 600);
 		shell.setLayout(new GridLayout(1, false));
 
-		final DualList dl = new DualList(shell, SWT.NONE);
+		dl = new DualList(shell, SWT.NONE);
 		dl.setItems(createItems(shell));
 		dl.addListener(SWT.Selection, e -> {
 			System.out.println("Selection Listener called");
 		});
 
 		dl.setLayoutData(new GridData(GridData.FILL, GridData.FILL, true, true));
 
+		GridData gdButtons = new GridData(GridData.END, GridData.FILL, true, false);
+		gdButtons.widthHint = 150;
+
+		Button changeConfiguration = new Button(shell, SWT.PUSH);
+		changeConfiguration.setText("Change Configuration");
+		changeConfiguration.setLayoutData(gdButtons);
+		changeConfiguration.addListener(SWT.Selection, e -> dl.setConfiguration(createConfiguration()));
+
+		Button hideButtons = new Button(shell, SWT.PUSH);
+		hideButtons.setText("Hide buttons");
+		hideButtons.setLayoutData(gdButtons);
+		hideButtons.addListener(SWT.Selection, e -> {
+			DLConfiguration config = new DLConfiguration();
+			config.setDoubleDownVisible(false).setDoubleUpVisible(false).//
+			setDoubleRightVisible(false).setDoubleLeftVisible(false).//
+			setDownVisible(false).setUpVisible(false);
+			dl.setConfiguration(config);
+		});
+
+		Button resetConfiguration = new Button(shell, SWT.PUSH);
+		resetConfiguration.setText("Reset Configuration");
+		resetConfiguration.setLayoutData(gdButtons);
+		resetConfiguration.addListener(SWT.Selection, e -> dl.setConfiguration(null));
+
 		shell.pack();
 		shell.open();
 
@@ -109,4 +146,33 @@ private static List<DLItem> createItems(final Shell shell) {
 		return list;
 	}
 
+	private static DLConfiguration createConfiguration() {
+		DLConfiguration config = new DLConfiguration();
+		Display display = Display.getCurrent();
+		// Change colors for both panels
+		config.setItemsBackgroundColor(display.getSystemColor(SWT.COLOR_BLACK)).//
+				setItemsForegroundColor(display.getSystemColor(SWT.COLOR_WHITE)).//
+				setItemsOddLinesColor(display.getSystemColor(SWT.COLOR_GRAY));
+		config.setSelectionBackgroundColor(display.getSystemColor(SWT.COLOR_DARK_GREEN)).//
+				setSelectionForegroundColor(display.getSystemColor(SWT.COLOR_YELLOW)).//
+				setSelectionOddLinesColor(display.getSystemColor(SWT.COLOR_RED));
+
+		// Change text alignment
+		config.setItemsTextAlignment(SWT.RIGHT).setSelectionTextAlignment(SWT.CENTER);
+
+		// Change buttons
+		config.setDownImage(createImage(ARROW_DOWN_IMAGE)).setUpImage(createImage(ARROW_UP_IMAGE)).//
+				setRightImage(createImage(ARROW_RIGHT_IMAGE)).setLeftImage(createImage(ARROW_LEFT_IMAGE)).//
+				setDoubleDownImage(createImage(DOUBLE_DOWN_IMAGE)).setDoubleUpImage(createImage(DOUBLE_UP_IMAGE)).//
+				setDoubleLeftImage(createImage(DOUBLE_LEFT_IMAGE)).setDoubleRightImage(createImage(DOUBLE_RIGHT_IMAGE));
+
+		return config;
+	}
+
+	private static Image createImage(String fileName) {
+		Image image = new Image(Display.getCurrent(), //
+				DualListTextSnippet.class.getResourceAsStream("arrows/" + fileName));
+		SWTGraphicUtil.addDisposer(dl, image);
+		return image;
+	}
 }