Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.g2d / src / org / simantics / g2d / element / handler / PropertyHandlerImpl.java.keep

diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/element/handler/PropertyHandlerImpl.java.keep b/bundles/org.simantics.g2d/src/org/simantics/g2d/element/handler/PropertyHandlerImpl.java.keep
new file mode 100644 (file)
index 0000000..8bc2b18
--- /dev/null
+++ b/bundles/org.simantics.g2d/src/org/simantics/g2d/element/handler/PropertyHandlerImpl.java.keep
@@ -0,0 +1,92 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007- VTT Technical Research Centre of Finland.\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;\r
+\r
+import java.util.ArrayList;\r
+import java.util.Collection;\r
+import java.util.HashSet;\r
+import java.util.List;\r
+import java.util.Set;\r
+\r
+import org.simantics.g2d.element.IElement;\r
+import org.simantics.utils.datastructures.hints.IHintContext.Key;\r
+import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;\r
+import org.simantics.utils.datastructures.valueinterface.InvalidItemException;\r
+import org.simantics.utils.datastructures.valueinterface.SubscriptionException;\r
+import org.simantics.utils.datastructures.valueinterface.ValueAccess;\r
+import org.simantics.utils.datastructures.valueinterface.ValueMap;\r
+import org.simantics.utils.datastructures.valueinterface.impl.SimpleValueMap;\r
+import org.simantics.utils.datastructures.valueinterface.impl.ValueMonitor;\r
+\r
+/**\r
+ * \r
+ * @Author Toni Kalajainen\r
+ */\r
+public class PropertyHandlerImpl implements PropertyHandler {\r
+\r
+       List<String> keys = new ArrayList<String>();\r
+       Set<String> keys2 = new HashSet<String>();\r
+       ValueMap<String> initialValues;\r
+       \r
+       private static final Key KEY_VM = new KeyOf(ValueMonitor.class);\r
+       \r
+       public PropertyHandlerImpl(String ... keys)\r
+       {\r
+               for (String k : keys) {\r
+                       this.keys.add(k);\r
+                       this.keys2.add(k);\r
+               }\r
+       }\r
+       \r
+       public PropertyHandlerImpl(Collection<String> keys, ValueMap<String> initialValues)\r
+       {\r
+               for (String k : keys) {\r
+                       this.keys.add(k);\r
+                       this.keys2.add(k);\r
+               }\r
+               if (initialValues!=null)\r
+                       this.initialValues = new SimpleValueMap<String>(initialValues);\r
+       }\r
+       \r
+       @Override\r
+       public void enumerateProperties(Collection<String> collection) {\r
+               collection.addAll(keys);\r
+       }\r
+\r
+       @Override\r
+       public Object getValue(IElement e, String key) {\r
+               ValueMonitor<String> vm = e.getHint(KEY_VM);\r
+               if (vm==null) return null;\r
+               return vm.get(key);\r
+       }\r
+\r
+       @Override\r
+       public void setValueSource(IElement e, ValueAccess<String> access) {\r
+               if (access==null) {\r
+                       ValueMonitor<String> vm = e.getHint(KEY_VM);\r
+                       if (vm!=null) {                 \r
+                               e.removeHint(KEY_VM);\r
+                               vm.dispose();\r
+                       }\r
+                       return;\r
+               }\r
+               try {\r
+                       ValueMonitor<String> vm = new ValueMonitor<String>(access, keys2, initialValues);\r
+                       e.setHint(KEY_VM, vm);\r
+                       vm.dispose();\r
+               } catch (SubscriptionException e1) {\r
+                       e1.printStackTrace();\r
+               } catch (InvalidItemException e1) {\r
+                       e1.printStackTrace();\r
+               }\r
+       }\r
+\r
+}\r