commit 08055f66528330ff1a1d1d13c856647d86dd967d
author Svetoslav Ganov <svetoslavganov@google.com> Tue May 15 11:06:36 2012 -0700
committer Svetoslav Ganov <svetoslavganov@google.com> Tue May 15 13:51:43 2012 -0700
tree 046498c25e62e26a2b526c1cd5376ec869a3d6a8
parent ceca4ff1891baf033cd9d6951ec5a1d31473642f

Adding accessibility scroll support to PagedView.

1. Added support for accessibility scroll action to
   PagedView.

2. Exposed AppsCustomizePagedView and Workspace for
   acessibility if otherwise specified.

bug:5932640

Change-Id: I812e7c285cbc4d925390b9fae48a18acc68432ce

src/com/android/launcher2/PagedView.java

diff --git a/src/com/android/launcher2/PagedView.java b/src/com/android/launcher2/PagedView.java
index 5d9cf81..02f1c22 100644
--- a/src/com/android/launcher2/PagedView.java
+++ b/src/com/android/launcher2/PagedView.java
@@ -24,6 +24,7 @@
 import android.content.res.TypedArray;
 import android.graphics.Canvas;
 import android.graphics.Rect;
+import android.os.Bundle;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.util.AttributeSet;
@@ -1854,7 +1855,13 @@
     @Override
     public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
         super.onInitializeAccessibilityNodeInfo(info);
-        info.setScrollable(true);
+        info.setScrollable(getPageCount() > 1);
+        if (getCurrentPage() < getPageCount() - 1) {
+            info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_FORWARD);
+        }
+        if (getCurrentPage() > 0) {
+            info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD);
+        }
     }
 
     @Override
@@ -1868,6 +1875,28 @@
         }
     }
 
+    @Override
+    public boolean performAccessibilityAction(int action, Bundle arguments) {
+        if (super.performAccessibilityAction(action, arguments)) {
+            return true;
+        }
+        switch (action) {
+            case AccessibilityNodeInfo.ACTION_SCROLL_FORWARD: {
+                if (getCurrentPage() < getPageCount() - 1) {
+                    scrollRight();
+                    return true;
+                }
+            } break;
+            case AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD: {
+                if (getCurrentPage() > 0) {
+                    scrollLeft();
+                    return true;
+                }
+            } break;
+        }
+        return false;
+    }
+
     protected String getCurrentPageDescription() {
         return String.format(getContext().getString(R.string.default_scroll_format),
                  getNextPage() + 1, getChildCount());