--- /dev/null
+package org.simantics.ui.selection;\r
+\r
+import java.util.Collection;\r
+import java.util.List;\r
+\r
+import org.eclipse.core.commands.ExecutionEvent;\r
+import org.eclipse.jface.viewers.ISelection;\r
+import org.eclipse.ui.handlers.HandlerUtil;\r
+import org.simantics.Simantics;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.RequestProcessor;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.common.primitiverequest.IsInstanceOf;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.request.VariableURI;\r
+import org.simantics.db.layer0.variable.Variable;\r
+import org.simantics.utils.ui.ISelectionUtils;\r
+\r
+public class WorkbenchSelectionUtils {\r
+\r
+ public static Resource getPossibleResource(ExecutionEvent event) throws DatabaseException {\r
+ ISelection selection = HandlerUtil.getCurrentSelection(event);\r
+ return getPossibleResource(selection);\r
+ }\r
+ \r
+ public static Variable getPossibleVariable(ExecutionEvent event) throws DatabaseException {\r
+ ISelection selection = HandlerUtil.getCurrentSelection(event);\r
+ return getPossibleVariable(selection);\r
+ }\r
+ \r
+ public static List<WorkbenchSelectionElement> getWorkbenchSelectionElements(ISelection selection) {\r
+ return ISelectionUtils.filterSelection(selection, WorkbenchSelectionElement.class);\r
+ }\r
+\r
+ public static String getPossibleJSON(Object selection) throws DatabaseException {\r
+ if(selection instanceof WorkbenchSelectionElement) return getPossibleJSON((WorkbenchSelectionElement)selection);\r
+ WorkbenchSelectionElement element = ISelectionUtils.filterSingleSelection(selection, WorkbenchSelectionElement.class);\r
+ if(element == null) return null;\r
+ return getPossibleJSON(element);\r
+ }\r
+\r
+ public static Resource getPossibleResource(Object selection) throws DatabaseException {\r
+ if(selection instanceof WorkbenchSelectionElement) return getPossibleResource((WorkbenchSelectionElement)selection);\r
+ WorkbenchSelectionElement element = ISelectionUtils.filterSingleSelection(selection, WorkbenchSelectionElement.class);\r
+ if(element == null) return null;\r
+ return getPossibleResource(element);\r
+ }\r
+\r
+ public static Variable getPossibleVariable(Object selection) throws DatabaseException {\r
+ if(selection instanceof WorkbenchSelectionElement) return getPossibleVariable((WorkbenchSelectionElement)selection);\r
+ WorkbenchSelectionElement element = ISelectionUtils.filterSingleSelection(selection, WorkbenchSelectionElement.class);\r
+ if(element == null) return null;\r
+ return getPossibleVariable(element);\r
+ }\r
+\r
+ public static Variable getPossibleVariable(Object[] selection) throws DatabaseException {\r
+ if(selection.length != 1) return null;\r
+ if(!(selection[0] instanceof WorkbenchSelectionElement)) return null;\r
+ return getPossibleVariable((WorkbenchSelectionElement)selection[0]);\r
+ }\r
+\r
+ public static <T> T getPossibleElement(Object[] selection, WorkbenchSelectionContentType<T> contentType) throws DatabaseException {\r
+ if(selection.length != 1) return null;\r
+ if(!(selection[0] instanceof WorkbenchSelectionElement)) return null;\r
+ WorkbenchSelectionElement wse = (WorkbenchSelectionElement)selection[0];\r
+ return wse.getContent(contentType);\r
+ }\r
+\r
+// public static <T> T getPossibleExplorerInput(Object selection) throws DatabaseException {\r
+// if(selection instanceof WorkbenchSelectionElement) return getPossibleExplorerInput((WorkbenchSelectionElement)selection);\r
+// WorkbenchSelectionElement element = ISelectionUtils.filterSingleSelection(selection, WorkbenchSelectionElement.class);\r
+// if(element == null) return null;\r
+// return getPossibleExplorerInput(element);\r
+// }\r
+\r
+// public static <T> T getPossibleExplorerColumn(Object selection) throws DatabaseException {\r
+// if(selection instanceof WorkbenchSelectionElement) return getPossibleExplorerColumn((WorkbenchSelectionElement)selection);\r
+// WorkbenchSelectionElement element = ISelectionUtils.filterSingleSelection(selection, WorkbenchSelectionElement.class);\r
+// if(element == null) return null;\r
+// return getPossibleExplorerColumn(element);\r
+// }\r
+ \r
+ public static String getPossibleJSON(WorkbenchSelectionElement wse) throws DatabaseException {\r
+ return getPossibleJSON(Simantics.getSession(), wse);\r
+ }\r
+\r
+ public static Resource getPossibleResource(WorkbenchSelectionElement wse) throws DatabaseException {\r
+ return getPossibleResource(Simantics.getSession(), wse);\r
+ }\r
+\r
+ public static Variable getPossibleVariable(WorkbenchSelectionElement wse) throws DatabaseException {\r
+ return getPossibleVariable(Simantics.getSession(), wse);\r
+ }\r
+\r
+ public static Variable getPossibleVariableSCL(ReadGraph graph, WorkbenchSelectionElement wse) throws DatabaseException {\r
+ return getPossibleVariable(graph, wse);\r
+ }\r
+\r
+ public static Resource getPossibleResourceSCL(ReadGraph graph, WorkbenchSelectionElement wse) throws DatabaseException {\r
+ return getPossibleResource(graph, wse);\r
+ }\r
+\r
+ public static String getPossibleJSON(RequestProcessor processor, Object input) throws DatabaseException {\r
+ Variable var = getPossibleVariable(processor, input);\r
+ if(var != null) {\r
+ String uri = processor.syncRequest(new VariableURI(var));\r
+ return "{ \"type\":\"Variable\", \"uri\" : \"" + uri + "\" }";\r
+ }\r
+ Resource res = getPossibleResource(processor, input);\r
+ if(res != null) {\r
+ return "{ type:\"Resource\" }";\r
+ }\r
+ return "{ type:\"Unknown\" }";\r
+ \r
+ }\r
+\r
+ public static Resource getPossibleResource(RequestProcessor processor, Object input) throws DatabaseException {\r
+ return getPossibleResource(processor, input, null);\r
+ }\r
+\r
+ public static Resource getPossibleResource(RequestProcessor processor, Object input, Resource type) throws DatabaseException {\r
+ if(input instanceof Collection && !((Collection)input).isEmpty()) {\r
+ Object element = ((Collection)input).iterator().next();\r
+ if(element instanceof Resource)\r
+ return (Resource)element;\r
+ }\r
+ Resource resource = getPossibleElement(input, new AnyResource(processor));\r
+ if(resource == null) return resource;\r
+ if(type != null) {\r
+ if(processor.sync(new IsInstanceOf(resource, type))) return resource;\r
+ else return null;\r
+ }\r
+ return resource;\r
+ }\r
+\r
+ public static Variable getPossibleVariable(RequestProcessor processor, Object input) throws DatabaseException {\r
+ return getPossibleElement(input, new AnyVariable(processor));\r
+ }\r
+\r
+// @SuppressWarnings("unchecked")\r
+// public static <T> T getPossibleExplorerInput(WorkbenchSelectionElement input) throws DatabaseException {\r
+// return ((T)getPossibleElement(input, new ExplorerInputContentType()));\r
+// }\r
+\r
+ public static <T> T getPossibleElement(Object input, WorkbenchSelectionContentType<T> contentType) {\r
+ Object single = getPossibleSingleElement(input);\r
+ if(single == null) return null;\r
+ if(single instanceof WorkbenchSelectionElement) {\r
+ WorkbenchSelectionElement element = (WorkbenchSelectionElement)single;\r
+ return (T)element.getContent(contentType);\r
+ }\r
+ return null;\r
+ }\r
+ \r
+ public static WorkbenchSelectionElement getPossibleSelectionElement(Object input) {\r
+ if(input instanceof WorkbenchSelectionElement) return (WorkbenchSelectionElement)input;\r
+ if(input instanceof Collection) {\r
+ Collection<?> c = (Collection<?>)input;\r
+ if(c.size() == 1) {\r
+ Object o = c.iterator().next();\r
+ if(o instanceof WorkbenchSelectionElement) return (WorkbenchSelectionElement)o;\r
+ }\r
+ }\r
+ return null;\r
+ }\r
+\r
+ // Internal helpers\r
+ \r
+ private static Object getPossibleSingleElement(Object input) {\r
+ if(input instanceof WorkbenchSelectionElement) return input;\r
+ if(input instanceof Collection) {\r
+ Collection<?> c = (Collection<?>)input;\r
+ if(c.size() == 1) return c.iterator().next();\r
+ } \r
+ return null;\r
+ } \r
+ \r
+ \r
+}\r