Make Drag and Drop mouse specific behavior for now. (41585d5e) · Commits · e / os / android_frameworks_base

packages/DocumentsUI/src/com/android/documentsui/dirlist/DirectoryFragment.java

+61 −40

Original line number	Diff line number	Diff line
		@@ -147,6 +147,7 @@ public class DirectoryFragment extends Fragment implements DocumentsAdapter.Envi

		private View mEmptyView;
		private RecyclerView mRecView;
		private ListeningGestureDetector mGestureDetector;

		private int mType = TYPE_NORMAL;
		private String mStateKey;
		@@ -300,24 +301,9 @@ public class DirectoryFragment extends Fragment implements DocumentsAdapter.Envi

		mRecView.setAdapter(mAdapter);

		GestureListener listener = new GestureListener();
		final GestureDetector detector = new GestureDetector(this.getContext(), listener);
		detector.setOnDoubleTapListener(listener);
		mGestureDetector = new ListeningGestureDetector(this.getContext(), new GestureListener());

		mRecView.addOnItemTouchListener(
		new OnItemTouchListener() {
		@Override
		public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
		detector.onTouchEvent(e);
		return false;
		}

		@Override
		public void onTouchEvent(RecyclerView rv, MotionEvent e) {}

		@Override
		public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {}
		});
		mRecView.addOnItemTouchListener(mGestureDetector);

		// TODO: instead of inserting the view into the constructor, extract listener-creation code
		// and set the listener on the view after the fact. Then the view doesn't need to be passed
		@@ -1129,11 +1115,7 @@ public class DirectoryFragment extends Fragment implements DocumentsAdapter.Envi
		view.setOnDragListener(mOnDragListener);
		}

		// Temporary: attaching the listener to the title only.
		// Attaching to the entire item conflicts with the item long click handler responsible
		// for item selection.
		final View title = view.findViewById(android.R.id.title);
		title.setOnLongClickListener(mLongClickListener);
		view.setOnLongClickListener(mLongClickListener);
		}

		private View.OnDragListener mOnDragListener = new View.OnDragListener() {
		@@ -1208,24 +1190,6 @@ public class DirectoryFragment extends Fragment implements DocumentsAdapter.Envi
		}
		}

		private View.OnLongClickListener mLongClickListener = new View.OnLongClickListener() {
		@Override
		public boolean onLongClick(View v) {
		final List<DocumentInfo> docs = getDraggableDocuments(v);
		if (docs.isEmpty()) {
		return false;
		}
		v.startDrag(
		getClipDataFromDocuments(docs),
		new DrawableShadowBuilder(getDragShadowIcon(docs)),
		null,
		View.DRAG_FLAG_GLOBAL \| View.DRAG_FLAG_GLOBAL_URI_READ \|
		View.DRAG_FLAG_GLOBAL_URI_WRITE
		);
		return true;
		}
		};

		private List<DocumentInfo> getDraggableDocuments(View currentItemView) {
		String modelId = getModelId(currentItemView);
		if (modelId == null) {
		@@ -1349,6 +1313,63 @@ public class DirectoryFragment extends Fragment implements DocumentsAdapter.Envi
		}
		}

		private View.OnLongClickListener mLongClickListener = new View.OnLongClickListener() {
		@Override
		public boolean onLongClick(View v) {
		if (mGestureDetector.mouseSpawnedLastEvent()) {
		List<DocumentInfo> docs = getDraggableDocuments(v);
		if (docs.isEmpty()) {
		return false;
		}
		v.startDrag(
		getClipDataFromDocuments(docs),
		new DrawableShadowBuilder(getDragShadowIcon(docs)),
		null,
		View.DRAG_FLAG_GLOBAL \| View.DRAG_FLAG_GLOBAL_URI_READ \|
		View.DRAG_FLAG_GLOBAL_URI_WRITE
		);
		return true;
		}

		return false;
		}
		};

		// Previously we listened to events with one class, only to bounce them forward
		// to GestureDetector. We're still doing that here, but with a single class
		// that reduces overall complexity in our glue code.
		private static final class ListeningGestureDetector extends GestureDetector
		implements OnItemTouchListener {

		private int mLastTool = -1;

		public ListeningGestureDetector(Context context, GestureListener listener) {
		super(context, listener);
		setOnDoubleTapListener(listener);
		}

		boolean mouseSpawnedLastEvent() {
		return Events.isMouseType(mLastTool);
		}

		boolean touchSpawnedLastEvent() {
		return Events.isTouchType(mLastTool);
		}

		@Override
		public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
		mLastTool = e.getToolType(0);
		onTouchEvent(e); // bounce this forward to our detecty heart
		return false;
		}

		@Override
		public void onTouchEvent(RecyclerView rv, MotionEvent e) {}

		@Override
		public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {}
		}

		/**
		* The gesture listener for items in the list/grid view. Interprets gestures and sends the
		* events to the target DocumentHolder, whence they are routed to the appropriate listener.