Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.browsing.ui.swt / src / org / simantics / browsing / ui / swt / widgets / impl / ModifyComboListenerImpl.java

diff --git a/bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/widgets/impl/ModifyComboListenerImpl.java b/bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/widgets/impl/ModifyComboListenerImpl.java
new file mode 100644 (file)
index 0000000..73c84df
--- /dev/null
+++ b/bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/widgets/impl/ModifyComboListenerImpl.java
@@ -0,0 +1,123 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2012 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.browsing.ui.swt.widgets.impl;\r
+\r
+import java.util.List;\r
+import java.util.Map;\r
+\r
+import org.eclipse.jface.viewers.ISelection;\r
+import org.eclipse.swt.events.ModifyEvent;\r
+import org.eclipse.swt.events.ModifyListener;\r
+import org.simantics.browsing.ui.swt.widgets.Combo;\r
+import org.simantics.db.WriteGraph;\r
+import org.simantics.db.common.request.WriteRequest;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.management.ISessionContext;\r
+import org.simantics.utils.ReflectionUtils;\r
+import org.simantics.utils.datastructures.Pair;\r
+import org.simantics.utils.ui.ISelectionUtils;\r
+\r
+abstract public class ModifyComboListenerImpl<T, S> implements ModifyListener, Widget {\r
+\r
+       private ISessionContext context;\r
+       private Object lastInput = null;\r
+       \r
+    final private Class<?> clazz;\r
+       \r
+       public ModifyComboListenerImpl() {\r
+        clazz = ReflectionUtils.getSingleParameterType(getClass());\r
+       }\r
+       \r
+       private Object getInputContents(Object input, Class<?> inputClass) {\r
+\r
+               if(inputClass.isInstance(input)) return input;\r
+               \r
+               if(input instanceof ISelection) {\r
+                       return ISelectionUtils.filterSingleSelection((ISelection)input, inputClass);\r
+               } else {\r
+                       return null;\r
+               }\r
+               \r
+       }\r
+       \r
+       @SuppressWarnings("unchecked")\r
+    @Override\r
+       public void modifyText(ModifyEvent e) {\r
+               \r
+               Combo combo = (Combo)e.widget.getData("org.simantics.browsing.ui.widgets.Combo");\r
+               \r
+               int selectionIndex = combo.getWidget().getSelectionIndex();\r
+               if (selectionIndex == -1)\r
+                   return;\r
+\r
+               String[] items = combo.getWidget().getItems();\r
+               \r
+               String key = items[selectionIndex];\r
+               final Object input = lastInput;\r
+               \r
+               if(e.widget.getData() instanceof List) {\r
+\r
+                       List<Pair<String, Object>> data = (List<Pair<String, Object>>) e.widget.getData();\r
+                       Pair<String, Object> pair = data.get(selectionIndex);\r
+                       final Object o = pair.second;\r
+                       \r
+                       try {\r
+                               context.getSession().syncRequest(new WriteRequest() {\r
+\r
+                                       @Override\r
+                                       public void perform(WriteGraph graph) throws DatabaseException {\r
+\r
+                                               T single = (T)getInputContents(input, clazz);\r
+                                               applySelection(graph, single, (S)o);\r
+                                               \r
+                                       }\r
+                                       \r
+                               });\r
+                       } catch (DatabaseException e1) {\r
+                               e1.printStackTrace();\r
+                       }\r
+                       \r
+               } else if (e.widget.getData() instanceof Map) {\r
+                       \r
+                       Map<String, Object> data = (Map<String, Object>) e.widget.getData();\r
+                       final Object o = data.get(key);\r
+                       \r
+                       try {\r
+                               context.getSession().syncRequest(new WriteRequest() {\r
+\r
+                                       @Override\r
+                                       public void perform(WriteGraph graph) throws DatabaseException {\r
+\r
+                                               T single = (T)getInputContents(input, clazz);\r
+                                               applySelection(graph, single, (S)o);\r
+                                               \r
+                                       }\r
+                                       \r
+                               });\r
+                       } catch (DatabaseException e1) {\r
+                               e1.printStackTrace();\r
+                       }\r
+                       \r
+               }\r
+               \r
+       }\r
+\r
+       @Override\r
+       public void setInput(ISessionContext context, Object parameter) {\r
+               this.context = context;\r
+               lastInput = parameter;\r
+       }\r
+       \r
+       abstract public void applySelection(WriteGraph graph, T input, S selection) throws DatabaseException;\r
+       \r
+}\r
+       
\ No newline at end of file