Auto-save for the Dart Editor.

editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/text/editor/CompilationUnitEditor.java

Index: editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/text/editor/CompilationUnitEditor.java
diff --git a/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/text/editor/CompilationUnitEditor.java b/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/text/editor/CompilationUnitEditor.java
index b724bf5bd1b8b55d54a395936be8fa99c4f505f6..18a67beee06928e022dad3269f881248275e7c05 100644
--- a/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/text/editor/CompilationUnitEditor.java
+++ b/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/text/editor/CompilationUnitEditor.java
@@ -1069,6 +1069,11 @@ public class CompilationUnitEditor extends DartEditor implements IDartReconcilin
   private ListenerList fReconcilingListeners = new ListenerList(ListenerList.IDENTITY);
 
   /**
+   * Auto-save manager
+   */
+  private AutoSaveDartEditorManager fAutoSaveManager;
+
+  /**
    * Mutex for the reconciler. See https://bugs.eclipse.org/bugs/show_bug.cgi?id=63898 for a
    * description of the problem.
    * <p>
@@ -1556,6 +1561,9 @@ public class CompilationUnitEditor extends DartEditor implements IDartReconcilin
         fJavaEditorErrorTickUpdater.updateEditorImage(getInputDartElement());
       }
     }
+    if (isAutoSaveEnabled()) {
+      installAutoSave();
+    }
   }
 
   /*
@@ -1683,6 +1691,14 @@ public class CompilationUnitEditor extends DartEditor implements IDartReconcilin
           uninstallTabsToSpacesConverter();
           installTabsToSpacesConverter();
         }
+
+        if (PreferenceConstants.EDITOR_AUTO_SAVE.equals(p)) {
+          if (isAutoSaveEnabled()) {
+            installAutoSave();
+          } else {
+            uninstallAutoSave();
+          }
+        }
       }
 
     } finally {
@@ -1690,6 +1706,12 @@ public class CompilationUnitEditor extends DartEditor implements IDartReconcilin
     }
   }
 
+  protected void installAutoSave() {
+    uninstallAutoSave();
+    fAutoSaveManager = new AutoSaveDartEditorManager(this);
+    addReconcileListener(fAutoSaveManager);
+  }
+
   /*
    * @see com.google.dart.tools.ui.editor.JavaEditor#installOverrideIndicator(boolean )
    */
@@ -1910,6 +1932,10 @@ public class CompilationUnitEditor extends DartEditor implements IDartReconcilin
     }
   }
 
+  private boolean isAutoSaveEnabled() {
+    return PreferenceConstants.getPreferenceStore().getBoolean(PreferenceConstants.EDITOR_AUTO_SAVE);
+  }
+
   private void notifyAnalysisServerAboutFileChange() {
     IEditorInput input = getEditorInput();
     if (input instanceof IFileEditorInput) {
@@ -1943,4 +1969,11 @@ public class CompilationUnitEditor extends DartEditor implements IDartReconcilin
       }
     });
   }
+
+  private void uninstallAutoSave() {
+    if (fAutoSaveManager != null) {
+      removeReconcileListener(fAutoSaveManager);
+      fAutoSaveManager = null;
+    }
+  }
 }