1 files changed, 56 insertions, 0 deletions
diff --git a/java/com/android/dialer/app/list/ContentChangedFilter.java b/java/com/android/dialer/app/list/ContentChangedFilter.java
new file mode 100644
index 000000000..663846da5
--- /dev/null
+++ b/java/com/android/dialer/app/list/ContentChangedFilter.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
+ *
+ * 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.dialer.app.list;
+
+import android.view.View;
+import android.view.View.AccessibilityDelegate;
+import android.view.ViewGroup;
+import android.view.accessibility.AccessibilityEvent;
+
+/**
+ * AccessibilityDelegate that will filter out TYPE_WINDOW_CONTENT_CHANGED Used to suppress "Showing
+ * items x of y" from firing of ListView whenever it's content changes. AccessibilityEvent can only
+ * be rejected at a view's parent once it is generated, use addToParent() to add this delegate to
+ * the parent.
+ */
+public class ContentChangedFilter extends AccessibilityDelegate {
+
+  //the view we don't want TYPE_WINDOW_CONTENT_CHANGED to fire.
+  private View mView;
+
+  private ContentChangedFilter(View view) {
+    super();
+    mView = view;
+  }
+
+  /** Add this delegate to the parent of @param view to filter out TYPE_WINDOW_CONTENT_CHANGED */
+  public static void addToParent(View view) {
+    View parent = (View) view.getParent();
+    parent.setAccessibilityDelegate(new ContentChangedFilter(view));
+  }
+
+  @Override
+  public boolean onRequestSendAccessibilityEvent(
+      ViewGroup host, View child, AccessibilityEvent event) {
+    if (child == mView) {
+      if (event.getEventType() == AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED) {
+        return false;
+      }
+    }
+    return super.onRequestSendAccessibilityEvent(host, child, event);
+  }
+}