1 files changed, 66 insertions, 0 deletions
diff --git a/src/com/android/launcher3/accessibility/AccessibleDragListenerAdapter.java b/src/com/android/launcher3/accessibility/AccessibleDragListenerAdapter.java
new file mode 100644
index 000000000..f8df5d7be
--- /dev/null
+++ b/src/com/android/launcher3/accessibility/AccessibleDragListenerAdapter.java
@@ -0,0 +1,66 @@
+/*
+ * 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.launcher3.accessibility;
+
+import android.view.ViewGroup;
+
+import com.android.launcher3.CellLayout;
+import com.android.launcher3.DropTarget.DragObject;
+import com.android.launcher3.Launcher;
+import com.android.launcher3.dragndrop.DragController.DragListener;
+import com.android.launcher3.dragndrop.DragOptions;
+
+/**
+ * Utility listener to enable/disable accessibility drag flags for a ViewGroup
+ * containing CellLayouts
+ */
+public class AccessibleDragListenerAdapter implements DragListener {
+
+    private final ViewGroup mViewGroup;
+    private final int mDragType;
+
+    /**
+     * @param parent
+     * @param dragType either {@link CellLayout#WORKSPACE_ACCESSIBILITY_DRAG} or
+     *                 {@link CellLayout#FOLDER_ACCESSIBILITY_DRAG}
+     */
+    public AccessibleDragListenerAdapter(ViewGroup parent, int dragType) {
+        mViewGroup = parent;
+        mDragType = dragType;
+    }
+
+    @Override
+    public void onDragStart(DragObject dragObject, DragOptions options) {
+        enableAccessibleDrag(true);
+    }
+
+    @Override
+    public void onDragEnd() {
+        enableAccessibleDrag(false);
+        Launcher.getLauncher(mViewGroup.getContext()).getDragController().removeDragListener(this);
+    }
+
+    protected void enableAccessibleDrag(boolean enable) {
+        for (int i = 0; i < mViewGroup.getChildCount(); i++) {
+            setEnableForLayout((CellLayout) mViewGroup.getChildAt(i), enable);
+        }
+    }
+
+    protected final void setEnableForLayout(CellLayout layout, boolean enable) {
+        layout.enableAccessibleDrag(enable, mDragType);
+    }
+}