1 files changed, 47 insertions, 0 deletions
diff --git a/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/editors/uimodel/IUiUpdateListener.java b/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/editors/uimodel/IUiUpdateListener.java
new file mode 100644
index 000000000..a4f1f74ea
--- /dev/null
+++ b/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/editors/uimodel/IUiUpdateListener.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Eclipse Public License, Version 1.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.eclipse.org/org/documents/epl-v10.php
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.ide.eclipse.adt.internal.editors.uimodel;
+
+
+/**
+ * Listen to update notifications in UI nodes.
+ */
+public interface IUiUpdateListener {
+
+    /** Update state of the UI node */
+    public enum UiUpdateState {
+        /** The node's attributes have been updated. They may or may not actually have changed. */
+        ATTR_UPDATED,
+        /** The node sub-structure (i.e. child nodes) has changed */
+        CHILDREN_CHANGED,
+        /** The XML counterpart for the UI node has just been created. */
+        CREATED,
+        /** The XML counterpart for the UI node has just been deleted.
+         *  Note that mandatory UI nodes are never actually deleted. */
+        DELETED
+    }
+
+    /**
+     * Indicates that an UiElementNode has been updated.
+     * <p/>
+     * This happens when an {@link UiElementNode} is refreshed to match the
+     * XML model. The actual UI element node may or may not have changed.
+     * 
+     * @param ui_node The {@link UiElementNode} being updated.
+     */
+    public void uiElementNodeUpdated(UiElementNode ui_node, UiUpdateState state);
+}