Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/element/handler/impl/SimpleElementLayers.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/element/handler/impl/SimpleElementLayers.java
new file mode 100644 (file)
index 0000000..30c9672
--- /dev/null
+++ b/bundles/org.simantics.g2d/src/org/simantics/g2d/element/handler/impl/SimpleElementLayers.java
@@ -0,0 +1,125 @@
+/*******************************************************************************\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 java.util.Collections;\r
+import java.util.Set;\r
+\r
+import org.simantics.g2d.element.ElementHints;\r
+import org.simantics.g2d.element.IElement;\r
+import org.simantics.g2d.element.handler.ElementLayerListener;\r
+import org.simantics.g2d.element.handler.ElementLayers;\r
+import org.simantics.g2d.layers.ILayer;\r
+import org.simantics.g2d.layers.ILayers;\r
+\r
+/**\r
+ * @author Antti Villberg\r
+ */\r
+public class SimpleElementLayers implements ElementLayers {\r
+\r
+    public static final SimpleElementLayers INSTANCE = new SimpleElementLayers();\r
+\r
+    private static final long serialVersionUID = 379502115902223354L;\r
+\r
+    @Override\r
+    public boolean isVisible(IElement e, ILayers layers) {\r
+\r
+        assert(e != null);\r
+        assert(layers != null);\r
+\r
+        Set<ILayer> elementLayers = (Set<ILayer>)e.getHint(ElementHints.KEY_VISIBLE_LAYERS);\r
+        if (elementLayers == null)\r
+            return true;\r
+\r
+        return !Collections.disjoint(layers.getVisibleLayers(), elementLayers);\r
+\r
+    }\r
+\r
+    @Override\r
+    public boolean isVisible(IElement e, ILayer layer) {\r
+\r
+        Set<ILayer> elementLayers = (Set<ILayer>)e.getHint(ElementHints.KEY_VISIBLE_LAYERS);\r
+        if (elementLayers == null)\r
+            return true;\r
+\r
+//             System.out.println("Testing: '" + layer.getName() + "'");\r
+//             for(ILayer l : elementLayers) System.out.println("elementLayer: '" + l.getName() + "'");\r
+//             System.out.println("result = " + elementLayers.contains(layer));\r
+\r
+        return elementLayers.contains(layer);\r
+\r
+    }\r
+\r
+    @Override\r
+    public boolean isFocusable(IElement e, ILayers layers) {\r
+\r
+        assert(e != null);\r
+        assert(layers != null);\r
+\r
+        Set<ILayer> elementLayers = (Set<ILayer>)e.getHint(ElementHints.KEY_FOCUS_LAYERS);\r
+        if (elementLayers == null)\r
+            return true;\r
+\r
+        return !Collections.disjoint(layers.getVisibleLayers(), elementLayers);\r
+\r
+    }\r
+\r
+    @Override\r
+    public boolean isFocusable(IElement e, ILayer layer) {\r
+\r
+        Set<ILayer> elementLayers = (Set<ILayer>)e.getHint(ElementHints.KEY_FOCUS_LAYERS);\r
+        if (elementLayers == null)\r
+            return true;\r
+\r
+        return elementLayers.contains(layer);\r
+\r
+    }\r
+\r
+    @Override\r
+    public boolean setVisibility(IElement e, ILayer layer, boolean value) {\r
+\r
+        Set<ILayer> elementLayers = (Set<ILayer>)e.getHint(ElementHints.KEY_VISIBLE_LAYERS);\r
+        if (elementLayers == null)\r
+            return false;\r
+        boolean result;\r
+        if (value) result = elementLayers.add(layer);\r
+        else result = elementLayers.remove(layer);\r
+\r
+        if (result) {\r
+            for (ElementLayerListener ell : e.getElementClass().getItemsByClass(ElementLayerListener.class)) {\r
+                ell.visibilityChanged(e, layer, value);\r
+            }\r
+        }\r
+\r
+        return result;\r
+    }\r
+\r
+    @Override\r
+    public boolean setFocusability(IElement e, ILayer layer, boolean value) {\r
+\r
+        Set<ILayer> elementLayers = (Set<ILayer>)e.getHint(ElementHints.KEY_FOCUS_LAYERS);\r
+        if (elementLayers == null)\r
+            return false;\r
+        boolean result;\r
+        if(value) result = elementLayers.add(layer);\r
+        else result = elementLayers.remove(layer);\r
+\r
+        if (result) {\r
+            for (ElementLayerListener ell : e.getElementClass().getItemsByClass(ElementLayerListener.class)) {\r
+                ell.focusabilityChanged(e, layer, value);\r
+            }\r
+        }\r
+\r
+        return result;\r
+    }\r
+\r
+}\r