Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/widgets/impl/TextModifyListenerImpl.java b/bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/widgets/impl/TextModifyListenerImpl.java
new file mode 100644 (file)
index 0000000..f999383
--- /dev/null
+++ b/bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/widgets/impl/TextModifyListenerImpl.java
@@ -0,0 +1,86 @@
+/*******************************************************************************\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 org.eclipse.jface.viewers.ISelection;\r
+import org.eclipse.swt.widgets.Text;\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.layer0.util.Layer0Utils;\r
+import org.simantics.db.management.ISessionContext;\r
+import org.simantics.utils.ReflectionUtils;\r
+import org.simantics.utils.ui.ISelectionUtils;\r
+\r
+public abstract class TextModifyListenerImpl<T> implements TextModifyListener, Widget {\r
+\r
+       protected ISessionContext context;\r
+       protected Object lastInput = null;\r
+\r
+       protected final Class<?> clazz;\r
+\r
+       public TextModifyListenerImpl() {\r
+               clazz = ReflectionUtils.getSingleParameterType(getClass());\r
+       }\r
+\r
+       private Object getInputContents(Object input, Class<?> inputClass) {\r
+               if (inputClass.isInstance(input))\r
+                       return input;\r
+               if (input instanceof ISelection)\r
+                       return ISelectionUtils.filterSingleSelection(input, inputClass);\r
+               return null;\r
+       }\r
+\r
+       @Override\r
+       public void modifyText(TrackedModifyEvent e) {\r
+\r
+               Text text = (Text)e.getWidget();\r
+               final String textValue = text.getText();\r
+               final Object input = lastInput;\r
+\r
+               try {\r
+                       context.getSession().syncRequest(new WriteRequest() {\r
+\r
+                               @SuppressWarnings("unchecked")\r
+                               @Override\r
+                               public void perform(WriteGraph graph) throws DatabaseException {\r
+                                       graph.markUndoPoint();\r
+                                       if(clazz.isInstance(input)) {\r
+                                               applyText(graph, (T)input, textValue);\r
+                                               Layer0Utils.addCommentMetadata(graph, "Modified " + input.toString() + " to " + textValue);\r
+                                       } else {\r
+                                               T single = (T)getInputContents(input, clazz);\r
+                                               if(single != null) {\r
+                                                       applyText(graph, single, textValue);\r
+                                                       Layer0Utils.addCommentMetadata(graph, "Modified " + single.toString() + " to " + textValue);\r
+                                               }\r
+                                       }\r
+                                       \r
+                                       \r
+                               }\r
+                               \r
+                       });\r
+               } catch (DatabaseException e1) {\r
+                       e1.printStackTrace();\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 applyText(WriteGraph graph, T input, String text) throws DatabaseException;\r
+\r
+}\r
+       
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