Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.g2d / src / org / simantics / g2d / element / handler / impl / AbstractTogglable.java

diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/element/handler/impl/AbstractTogglable.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/element/handler/impl/AbstractTogglable.java
new file mode 100644 (file)
index 0000000..e2e5e68
--- /dev/null
+++ b/bundles/org.simantics.g2d/src/org/simantics/g2d/element/handler/impl/AbstractTogglable.java
@@ -0,0 +1,66 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.g2d.element.handler.impl;\r
+\r
+import org.simantics.g2d.canvas.ICanvasContext;\r
+import org.simantics.g2d.element.IElement;\r
+import org.simantics.g2d.element.handler.Togglable;\r
+import org.simantics.scenegraph.g2d.events.MouseEvent;\r
+import org.simantics.utils.datastructures.hints.IHintContext.Key;\r
+import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;\r
+\r
+\r
+/**\r
+ * Base implementation for button handlers\r
+ * \r
+ * \r
+ * @author Toni Kalajainen\r
+ */\r
+public abstract class AbstractTogglable extends AbstractClickable implements Togglable {\r
+\r
+       private static final long serialVersionUID = 8409636755289629134L;\r
+       public static Key TOGGLE_KEY = new KeyOf(Boolean.class);\r
+\r
+       public AbstractTogglable(Double strayDistance) {\r
+               super(strayDistance);\r
+       }\r
+\r
+       public AbstractTogglable() {\r
+               super();\r
+       }\r
+\r
+\r
+       @Override\r
+       public boolean handleMouseEvent(IElement e, ICanvasContext ctx,\r
+                       MouseEvent me) {\r
+\r
+               boolean b = super.handleMouseEvent(e, ctx, me);\r
+               \r
+               return b;\r
+       }\r
+\r
+       \r
+       protected void onClicked(GrabInfo gi, ICanvasContext ctx) {\r
+               IElement e = gi.e;\r
+               Boolean b = e.getHint(TOGGLE_KEY);\r
+               if (b == null)\r
+                       b = false;\r
+               e.setHint(TOGGLE_KEY, !b);\r
+       }\r
+       \r
+       @Override\r
+       public boolean isChecked(IElement e) {\r
+               Boolean b = e.getHint(TOGGLE_KEY);\r
+               return (b == null ? false : b);\r
+       }\r
+       \r
+}\r