1 files changed, 56 insertions, 0 deletions
diff --git a/src/com/android/launcher3/accessibility/FolderAccessibilityHelper.java b/src/com/android/launcher3/accessibility/FolderAccessibilityHelper.java
new file mode 100644
index 000000000..ff9989036
--- /dev/null
+++ b/src/com/android/launcher3/accessibility/FolderAccessibilityHelper.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2015 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.launcher3.accessibility;
+
+import com.android.launcher3.CellLayout;
+import com.android.launcher3.FolderPagedView;
+import com.android.launcher3.R;
+
+/**
+ * Implementation of {@link DragAndDropAccessibilityDelegate} to support DnD in a folder.
+ */
+public class FolderAccessibilityHelper extends DragAndDropAccessibilityDelegate {
+
+    /**
+     * 0-index position for the first cell in {@link #mView} in {@link #mParent}.
+     */
+    private final int mStartPosition;
+
+    private final FolderPagedView mParent;
+
+    public FolderAccessibilityHelper(CellLayout layout) {
+        super(layout);
+        mParent = (FolderPagedView) layout.getParent();
+
+        int index = mParent.indexOfChild(layout);
+        mStartPosition = index * layout.getCountX() * layout.getCountY();
+    }
+    @Override
+    protected int intersectsValidDropTarget(int id) {
+        return Math.min(id, mParent.getAllocatedContentSize() - mStartPosition - 1);
+    }
+
+    @Override
+    protected String getLocationDescriptionForIconDrop(int id) {
+        return mContext.getString(R.string.move_to_position, id + mStartPosition + 1);
+    }
+
+    @Override
+    protected String getConfirmationForIconDrop(int id) {
+        return mContext.getString(R.string.item_moved);
+    }
+}