Fixed a bug that open *.java file in a non-java project will fail.

jossonsmith · jossonsmith · commit 5a2a4dd3dabc · 2006-10-02T07:41:12.000Z
diff --git a/sources/net.sf.j2s.ui/src/net/sf/j2s/ui/actions/OpenJSEditorAction.java b/sources/net.sf.j2s.ui/src/net/sf/j2s/ui/actions/OpenJSEditorAction.java
@@ -1,6 +1,8 @@
 package net.sf.j2s.ui.actions;
 
+import org.eclipse.core.resources.IResource;
 import org.eclipse.jdt.core.ICompilationUnit;
+import org.eclipse.jdt.core.IJavaModel;
 import org.eclipse.jdt.internal.ui.actions.SelectionConverter;
 import org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor;
 import org.eclipse.jdt.ui.actions.ExtractMethodAction;
@@ -72,6 +74,14 @@ public void setActiveEditor(IAction action, IEditorPart targetEditor) {
 			ICompilationUnit unit = SelectionConverter.getInputAsCompilationUnit(editor);
 			boolean enabled = false;
 			if (unit != null) {
+				IJavaModel javaModel = unit.getJavaModel();
+				if (javaModel == null) {
+					return; 
+				}
+				IResource resource = javaModel.getResource();
+				if (resource == null){
+					return;
+				}
 				enabled = UnitJavaScriptUtil.isUnitJSExisted(unit);
 			}
 			if (!enabled) {
