From b6ab098bad4b126eaaaa3aaa5a512fefc4e0749b Mon Sep 17 00:00:00 2001
From: Adam Powell <adamp@google.com>
Date: Wed, 7 Jan 2015 17:00:12 -0800
Subject: Add API for nested pre-processing of a11y events; fix
 ResolverDrawerLayout

Add API for handling nested pre-processing of accessibility events
similar to nested pre-scroll or pre-fling. This allows custom views to
delegate a nested scroll to a parent via the accessibility system.

Use this functionality to allow opening the ResolverDrawerLayout via
accessibility commands.

Bug 18827274

Change-Id: Icd5a502605b78a861bb03e7b11923841a72eb9ab
---
 core/java/android/view/ViewGroup.java | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'core/java/android/view/ViewGroup.java')

diff --git a/core/java/android/view/ViewGroup.java b/core/java/android/view/ViewGroup.java
index 22c5185..6678ff2 100644
--- a/core/java/android/view/ViewGroup.java
+++ b/core/java/android/view/ViewGroup.java
@@ -32,6 +32,7 @@ import android.graphics.Rect;
 import android.graphics.RectF;
 import android.graphics.Region;
 import android.os.Build;
+import android.os.Bundle;
 import android.os.Parcelable;
 import android.os.SystemClock;
 import android.util.AttributeSet;
@@ -2923,6 +2924,22 @@ public abstract class ViewGroup extends View implements ViewParent, ViewManager
 
     /**
      * {@inheritDoc}
+     *
+     * <p>Subclasses should always call <code>super.onNestedPrePerformAccessibilityAction</code></p>
+     *
+     * @param target The target view dispatching this action
+     * @param action Action being performed; see
+     *               {@link android.view.accessibility.AccessibilityNodeInfo}
+     * @param args Optional action arguments
+     * @return false by default. Subclasses should return true if they handle the event.
+     */
+    @Override
+    public boolean onNestedPrePerformAccessibilityAction(View target, int action, Bundle args) {
+        return false;
+    }
+
+    /**
+     * {@inheritDoc}
      */
     @Override
     void dispatchDetachedFromWindow() {
-- 
cgit v1.1