Index: chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NodeParent.java |
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NodeParent.java b/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NodeParent.java |
new file mode 100644 |
index 0000000000000000000000000000000000000000..533e6f4981190f0d8c0b030e28524adfcc66fb57 |
--- /dev/null |
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NodeParent.java |
@@ -0,0 +1,41 @@ |
+// Copyright 2016 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+package org.chromium.chrome.browser.ntp.cards; |
+ |
+/** |
+ * Interface to allow propagating change events upwards in the tree. |
+ */ |
+public interface NodeParent { |
+ /** |
+ * Notifies that {@code count} items starting at position {@code index} under the {@code child} |
+ * have changed. |
+ * @param child The child whose items have changed. |
+ * @param index The starting position of the range of changed items, relative to the |
+ * {@code child}. |
+ * @param count The number of changed items. |
+ * @see android.support.v7.widget.RecyclerView.Adapter#notifyItemRangeChanged(int, int) |
+ */ |
+ void onItemRangeChanged(TreeNode child, int index, int count); |
+ |
+ /** |
+ * Notifies that {@code count} items starting at position {@code index} under the {@code child} |
+ * have been added. |
+ * @param child The child to which items have been added. |
+ * @param index The starting position of the range of added items, relative to the child. |
+ * @param count The number of added items. |
+ * @see android.support.v7.widget.RecyclerView.Adapter#notifyItemRangeInserted(int, int) |
+ */ |
+ void onItemRangeInserted(TreeNode child, int index, int count); |
+ |
+ /** |
+ * Notifies that {@code count} items starting at position {@code index} under the {@code child} |
+ * have been removed. |
+ * @param child The child from which items have been removed. |
+ * @param index The starting position of the range of removed items, relative to the child. |
+ * @param count The number of removed items. |
+ * @see android.support.v7.widget.RecyclerView.Adapter#notifyItemRangeRemoved(int, int) |
+ */ |
+ void onItemRangeRemoved(TreeNode child, int index, int count); |
+} |