| /* |
| * Copyright (C) 2013 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.documentsui.dirlist; |
| |
| import static com.android.documentsui.Shared.DEBUG; |
| import static com.android.documentsui.State.ACTION_MANAGE; |
| import static com.android.documentsui.State.MODE_GRID; |
| import static com.android.documentsui.State.MODE_LIST; |
| import static com.android.documentsui.State.MODE_UNKNOWN; |
| import static com.android.documentsui.State.SORT_ORDER_UNKNOWN; |
| import static com.android.documentsui.model.DocumentInfo.getCursorInt; |
| import static com.android.documentsui.model.DocumentInfo.getCursorLong; |
| import static com.android.documentsui.model.DocumentInfo.getCursorString; |
| import static com.android.internal.util.Preconditions.checkNotNull; |
| import static com.android.internal.util.Preconditions.checkState; |
| import static com.google.common.base.Preconditions.checkArgument; |
| |
| import android.app.Activity; |
| import android.app.ActivityManager; |
| import android.app.Fragment; |
| import android.app.FragmentManager; |
| import android.app.FragmentTransaction; |
| import android.app.LoaderManager.LoaderCallbacks; |
| import android.content.ClipData; |
| import android.content.ContentProviderClient; |
| import android.content.ContentResolver; |
| import android.content.ContentValues; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.Loader; |
| import android.database.Cursor; |
| import android.graphics.Bitmap; |
| import android.graphics.Canvas; |
| import android.graphics.Point; |
| import android.graphics.drawable.Drawable; |
| import android.net.Uri; |
| import android.os.AsyncTask; |
| import android.os.Bundle; |
| import android.os.CancellationSignal; |
| import android.os.Looper; |
| import android.os.OperationCanceledException; |
| import android.os.Parcelable; |
| import android.provider.DocumentsContract; |
| import android.provider.DocumentsContract.Document; |
| import android.support.annotation.Nullable; |
| import android.support.annotation.VisibleForTesting; |
| import android.support.design.widget.Snackbar; |
| import android.support.v7.widget.GridLayoutManager; |
| import android.support.v7.widget.LinearLayoutManager; |
| import android.support.v7.widget.RecyclerView; |
| import android.support.v7.widget.RecyclerView.LayoutManager; |
| import android.support.v7.widget.RecyclerView.OnItemTouchListener; |
| import android.support.v7.widget.RecyclerView.RecyclerListener; |
| import android.support.v7.widget.RecyclerView.ViewHolder; |
| import android.text.TextUtils; |
| import android.text.format.DateUtils; |
| import android.text.format.Formatter; |
| import android.text.format.Time; |
| import android.util.Log; |
| import android.util.SparseArray; |
| import android.util.SparseBooleanArray; |
| import android.util.TypedValue; |
| import android.view.ActionMode; |
| import android.view.DragEvent; |
| import android.view.GestureDetector; |
| import android.view.KeyEvent; |
| import android.view.LayoutInflater; |
| import android.view.Menu; |
| import android.view.MenuItem; |
| import android.view.MotionEvent; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.view.ViewParent; |
| import android.widget.ImageView; |
| import android.widget.TextView; |
| |
| import com.android.documentsui.BaseActivity; |
| import com.android.documentsui.BaseActivity.DocumentContext; |
| import com.android.documentsui.CopyService; |
| import com.android.documentsui.DirectoryLoader; |
| import com.android.documentsui.DirectoryResult; |
| import com.android.documentsui.DocumentClipper; |
| import com.android.documentsui.DocumentsActivity; |
| import com.android.documentsui.DocumentsApplication; |
| import com.android.documentsui.Events; |
| import com.android.documentsui.IconUtils; |
| import com.android.documentsui.Menus; |
| import com.android.documentsui.MessageBar; |
| import com.android.documentsui.MimePredicate; |
| import com.android.documentsui.ProviderExecutor; |
| import com.android.documentsui.ProviderExecutor.Preemptable; |
| import com.android.documentsui.R; |
| import com.android.documentsui.RecentLoader; |
| import com.android.documentsui.RecentsProvider; |
| import com.android.documentsui.RecentsProvider.StateColumns; |
| import com.android.documentsui.RootCursorWrapper; |
| import com.android.documentsui.RootsCache; |
| import com.android.documentsui.Shared; |
| import com.android.documentsui.Shared; |
| import com.android.documentsui.Snackbars; |
| import com.android.documentsui.State; |
| import com.android.documentsui.ThumbnailCache; |
| import com.android.documentsui.dirlist.MultiSelectManager.Selection; |
| import com.android.documentsui.model.DocumentInfo; |
| import com.android.documentsui.model.DocumentStack; |
| import com.android.documentsui.model.RootInfo; |
| import com.android.internal.annotations.GuardedBy; |
| |
| import com.google.common.collect.Lists; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.List; |
| |
| /** |
| * Display the documents inside a single directory. |
| */ |
| public class DirectoryFragment extends Fragment { |
| |
| public static final String TAG = "DirectoryFragment"; |
| |
| public static final int TYPE_NORMAL = 1; |
| public static final int TYPE_SEARCH = 2; |
| public static final int TYPE_RECENT_OPEN = 3; |
| |
| public static final int ANIM_NONE = 1; |
| public static final int ANIM_SIDE = 2; |
| public static final int ANIM_DOWN = 3; |
| public static final int ANIM_UP = 4; |
| |
| public static final int REQUEST_COPY_DESTINATION = 1; |
| |
| private static final int LOADER_ID = 42; |
| private static final boolean DEBUG_ENABLE_DND = true; |
| |
| private static final String EXTRA_TYPE = "type"; |
| private static final String EXTRA_ROOT = "root"; |
| private static final String EXTRA_DOC = "doc"; |
| private static final String EXTRA_QUERY = "query"; |
| private static final String EXTRA_IGNORE_STATE = "ignoreState"; |
| |
| private Model mModel; |
| private MultiSelectManager mSelectionManager; |
| private Model.UpdateListener mModelUpdateListener = new ModelUpdateListener(); |
| private ItemClickListener mItemClickListener = new ItemClickListener(); |
| |
| private View mEmptyView; |
| private RecyclerView mRecView; |
| |
| private int mType = TYPE_NORMAL; |
| private String mStateKey; |
| |
| private int mLastMode = MODE_UNKNOWN; |
| private int mLastSortOrder = SORT_ORDER_UNKNOWN; |
| private boolean mLastShowSize; |
| private boolean mHideGridTitles; |
| private boolean mSvelteRecents; |
| private Point mThumbSize; |
| private DocumentsAdapter mAdapter; |
| private LoaderCallbacks<DirectoryResult> mCallbacks; |
| private FragmentTuner mTuner; |
| private DocumentClipper mClipper; |
| // These are lazily initialized. |
| private LinearLayoutManager mListLayout; |
| private GridLayoutManager mGridLayout; |
| private int mColumnCount = 1; // This will get updated when layout changes. |
| |
| private MessageBar mMessageBar; |
| private View mProgressBar; |
| |
| private int mSelectedItemColor; |
| private int mDefaultItemColor; |
| |
| public static void showNormal(FragmentManager fm, RootInfo root, DocumentInfo doc, int anim) { |
| show(fm, TYPE_NORMAL, root, doc, null, anim); |
| } |
| |
| public static void showSearch(FragmentManager fm, RootInfo root, String query, int anim) { |
| show(fm, TYPE_SEARCH, root, null, query, anim); |
| } |
| |
| public static void showRecentsOpen(FragmentManager fm, int anim) { |
| show(fm, TYPE_RECENT_OPEN, null, null, null, anim); |
| } |
| |
| private static void show(FragmentManager fm, int type, RootInfo root, DocumentInfo doc, |
| String query, int anim) { |
| final Bundle args = new Bundle(); |
| args.putInt(EXTRA_TYPE, type); |
| args.putParcelable(EXTRA_ROOT, root); |
| args.putParcelable(EXTRA_DOC, doc); |
| args.putString(EXTRA_QUERY, query); |
| |
| final FragmentTransaction ft = fm.beginTransaction(); |
| switch (anim) { |
| case ANIM_SIDE: |
| args.putBoolean(EXTRA_IGNORE_STATE, true); |
| break; |
| case ANIM_DOWN: |
| args.putBoolean(EXTRA_IGNORE_STATE, true); |
| ft.setCustomAnimations(R.animator.dir_down, R.animator.dir_frozen); |
| break; |
| case ANIM_UP: |
| ft.setCustomAnimations(R.animator.dir_frozen, R.animator.dir_up); |
| break; |
| } |
| |
| final DirectoryFragment fragment = new DirectoryFragment(); |
| fragment.setArguments(args); |
| |
| ft.replace(R.id.container_directory, fragment); |
| ft.commitAllowingStateLoss(); |
| } |
| |
| private static String buildStateKey(RootInfo root, DocumentInfo doc) { |
| final StringBuilder builder = new StringBuilder(); |
| builder.append(root != null ? root.authority : "null").append(';'); |
| builder.append(root != null ? root.rootId : "null").append(';'); |
| builder.append(doc != null ? doc.documentId : "null"); |
| return builder.toString(); |
| } |
| |
| public static @Nullable DirectoryFragment get(FragmentManager fm) { |
| // TODO: deal with multiple directories shown at once |
| Fragment fragment = fm.findFragmentById(R.id.container_directory); |
| return fragment instanceof DirectoryFragment |
| ? (DirectoryFragment) fragment |
| : null; |
| } |
| |
| @Override |
| public View onCreateView( |
| LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { |
| final View view = inflater.inflate(R.layout.fragment_directory, container, false); |
| |
| mMessageBar = MessageBar.create(getChildFragmentManager()); |
| mProgressBar = view.findViewById(R.id.progressbar); |
| |
| mEmptyView = view.findViewById(android.R.id.empty); |
| |
| mRecView = (RecyclerView) view.findViewById(R.id.list); |
| mRecView.setRecyclerListener( |
| new RecyclerListener() { |
| @Override |
| public void onViewRecycled(ViewHolder holder) { |
| cancelThumbnailTask(holder.itemView); |
| } |
| }); |
| |
| // TODO: Rather than update columns on layout changes, push this |
| // code (or something like it) into GridLayoutManager. |
| mRecView.addOnLayoutChangeListener( |
| new View.OnLayoutChangeListener() { |
| |
| @Override |
| public void onLayoutChange( |
| View v, int left, int top, int right, int bottom, int oldLeft, |
| int oldTop, int oldRight, int oldBottom) { |
| mColumnCount = calculateColumnCount(); |
| if (mGridLayout != null) { |
| mGridLayout.setSpanCount(mColumnCount); |
| } |
| } |
| }); |
| |
| mRecView.setItemAnimator(new DirectoryItemAnimator(getActivity())); |
| |
| // TODO: Add a divider between views (which might use RecyclerView.ItemDecoration). |
| if (DEBUG_ENABLE_DND) { |
| setupDragAndDropOnDirectoryView(mRecView); |
| } |
| |
| return view; |
| } |
| |
| @Override |
| public void onDestroyView() { |
| super.onDestroyView(); |
| |
| // Cancel any outstanding thumbnail requests |
| final int count = mRecView.getChildCount(); |
| for (int i = 0; i < count; i++) { |
| final View view = mRecView.getChildAt(i); |
| cancelThumbnailTask(view); |
| } |
| |
| // Clear any outstanding selection |
| mSelectionManager.clearSelection(); |
| } |
| |
| @Override |
| public void onActivityCreated(Bundle savedInstanceState) { |
| super.onActivityCreated(savedInstanceState); |
| |
| final Context context = getActivity(); |
| final State state = getDisplayState(); |
| |
| final RootInfo root = getArguments().getParcelable(EXTRA_ROOT); |
| final DocumentInfo doc = getArguments().getParcelable(EXTRA_DOC); |
| |
| mAdapter = new DocumentsAdapter(context); |
| mRecView.setAdapter(mAdapter); |
| |
| mDefaultItemColor = context.getResources().getColor(R.color.item_doc_background); |
| mSelectedItemColor = context.getResources().getColor(R.color.item_doc_background_selected); |
| |
| GestureDetector.SimpleOnGestureListener listener = |
| new GestureDetector.SimpleOnGestureListener() { |
| @Override |
| public boolean onSingleTapUp(MotionEvent e) { |
| return DirectoryFragment.this.onSingleTapUp(e); |
| } |
| @Override |
| public boolean onDoubleTap(MotionEvent e) { |
| Log.d(TAG, "Handling double tap."); |
| return DirectoryFragment.this.onDoubleTap(e); |
| } |
| }; |
| |
| final GestureDetector detector = new GestureDetector(this.getContext(), listener); |
| detector.setOnDoubleTapListener(listener); |
| |
| 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) {} |
| }); |
| |
| // 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 |
| // into the selection manager. |
| mSelectionManager = new MultiSelectManager( |
| mRecView, |
| state.allowMultiple |
| ? MultiSelectManager.MODE_MULTIPLE |
| : MultiSelectManager.MODE_SINGLE); |
| mSelectionManager.addCallback(new SelectionModeListener()); |
| |
| mModel = new Model(context, mAdapter); |
| mModel.addUpdateListener(mModelUpdateListener); |
| |
| mType = getArguments().getInt(EXTRA_TYPE); |
| mStateKey = buildStateKey(root, doc); |
| |
| mTuner = FragmentTuner.pick(state); |
| mClipper = new DocumentClipper(context); |
| |
| if (mType == TYPE_RECENT_OPEN) { |
| // Hide titles when showing recents for picking images/videos |
| mHideGridTitles = MimePredicate.mimeMatches( |
| MimePredicate.VISUAL_MIMES, state.acceptMimes); |
| } else { |
| mHideGridTitles = (doc != null) && doc.isGridTitlesHidden(); |
| } |
| |
| final ActivityManager am = (ActivityManager) context.getSystemService( |
| Context.ACTIVITY_SERVICE); |
| mSvelteRecents = am.isLowRamDevice() && (mType == TYPE_RECENT_OPEN); |
| |
| mCallbacks = new LoaderCallbacks<DirectoryResult>() { |
| @Override |
| public Loader<DirectoryResult> onCreateLoader(int id, Bundle args) { |
| final String query = getArguments().getString(EXTRA_QUERY); |
| |
| Uri contentsUri; |
| switch (mType) { |
| case TYPE_NORMAL: |
| contentsUri = DocumentsContract.buildChildDocumentsUri( |
| doc.authority, doc.documentId); |
| if (state.action == ACTION_MANAGE) { |
| contentsUri = DocumentsContract.setManageMode(contentsUri); |
| } |
| return new DirectoryLoader( |
| context, mType, root, doc, contentsUri, state.userSortOrder); |
| case TYPE_SEARCH: |
| contentsUri = DocumentsContract.buildSearchDocumentsUri( |
| root.authority, root.rootId, query); |
| if (state.action == ACTION_MANAGE) { |
| contentsUri = DocumentsContract.setManageMode(contentsUri); |
| } |
| return new DirectoryLoader( |
| context, mType, root, doc, contentsUri, state.userSortOrder); |
| case TYPE_RECENT_OPEN: |
| final RootsCache roots = DocumentsApplication.getRootsCache(context); |
| return new RecentLoader(context, roots, state); |
| default: |
| throw new IllegalStateException("Unknown type " + mType); |
| } |
| } |
| |
| @Override |
| public void onLoadFinished(Loader<DirectoryResult> loader, DirectoryResult result) { |
| if (!isAdded()) return; |
| |
| mModel.update(result); |
| |
| // Push latest state up to UI |
| // TODO: if mode change was racing with us, don't overwrite it |
| if (result.mode != MODE_UNKNOWN) { |
| state.derivedMode = result.mode; |
| } |
| state.derivedSortOrder = result.sortOrder; |
| ((BaseActivity) context).onStateChanged(); |
| |
| updateDisplayState(); |
| |
| // When launched into empty recents, show drawer |
| if (mType == TYPE_RECENT_OPEN && mModel.isEmpty() && !state.stackTouched && |
| context instanceof DocumentsActivity) { |
| ((DocumentsActivity) context).setRootsDrawerOpen(true); |
| } |
| |
| // Restore any previous instance state |
| final SparseArray<Parcelable> container = state.dirState.remove(mStateKey); |
| if (container != null && !getArguments().getBoolean(EXTRA_IGNORE_STATE, false)) { |
| getView().restoreHierarchyState(container); |
| } else if (mLastSortOrder != state.derivedSortOrder) { |
| mRecView.smoothScrollToPosition(0); |
| } |
| |
| mLastSortOrder = state.derivedSortOrder; |
| } |
| |
| @Override |
| public void onLoaderReset(Loader<DirectoryResult> loader) { |
| mModel.update(null); |
| } |
| }; |
| |
| // Kick off loader at least once |
| getLoaderManager().restartLoader(LOADER_ID, null, mCallbacks); |
| |
| updateDisplayState(); |
| } |
| |
| @Override |
| public void onActivityResult(int requestCode, int resultCode, Intent data) { |
| // There's only one request code right now. Replace this with a switch statement or |
| // something more scalable when more codes are added. |
| if (requestCode != REQUEST_COPY_DESTINATION) { |
| return; |
| } |
| if (resultCode == Activity.RESULT_CANCELED || data == null) { |
| // User pressed the back button or otherwise cancelled the destination pick. Don't |
| // proceed with the copy. |
| return; |
| } |
| |
| CopyService.start(getActivity(), getDisplayState().selectedDocumentsForCopy, |
| (DocumentStack) data.getParcelableExtra(Shared.EXTRA_STACK), |
| data.getIntExtra(CopyService.EXTRA_TRANSFER_MODE, CopyService.TRANSFER_MODE_COPY)); |
| } |
| |
| private int getEventAdapterPosition(MotionEvent e) { |
| View view = mRecView.findChildViewUnder(e.getX(), e.getY()); |
| return view != null ? mRecView.getChildAdapterPosition(view) : RecyclerView.NO_POSITION; |
| } |
| |
| private boolean onSingleTapUp(MotionEvent e) { |
| // Only respond to touch events. Single-click mouse events are selection events and are |
| // handled by the selection manager. Tap events that occur while the selection manager is |
| // active are also selection events. |
| if (Events.isTouchEvent(e) && !mSelectionManager.hasSelection()) { |
| int position = getEventAdapterPosition(e); |
| if (position != RecyclerView.NO_POSITION) { |
| return handleViewItem(position); |
| } |
| } |
| return false; |
| } |
| |
| protected boolean onDoubleTap(MotionEvent e) { |
| if (Events.isMouseEvent(e)) { |
| Log.d(TAG, "Handling double tap from mouse."); |
| int position = getEventAdapterPosition(e); |
| if (position != RecyclerView.NO_POSITION) { |
| return handleViewItem(position); |
| } |
| } |
| return false; |
| } |
| |
| private boolean handleViewItem(int position) { |
| final Cursor cursor = mModel.getItem(position); |
| checkNotNull(cursor, "Cursor cannot be null."); |
| final String docMimeType = getCursorString(cursor, Document.COLUMN_MIME_TYPE); |
| final int docFlags = getCursorInt(cursor, Document.COLUMN_FLAGS); |
| if (mTuner.isDocumentEnabled(docMimeType, docFlags)) { |
| final DocumentInfo doc = DocumentInfo.fromDirectoryCursor(cursor); |
| ((BaseActivity) getActivity()).onDocumentPicked(doc, mModel); |
| mSelectionManager.clearSelection(); |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public void onStop() { |
| super.onStop(); |
| |
| // Remember last scroll location |
| final SparseArray<Parcelable> container = new SparseArray<Parcelable>(); |
| getView().saveHierarchyState(container); |
| final State state = getDisplayState(); |
| state.dirState.put(mStateKey, container); |
| } |
| |
| @Override |
| public void onResume() { |
| super.onResume(); |
| updateDisplayState(); |
| } |
| |
| public void onDisplayStateChanged() { |
| updateDisplayState(); |
| } |
| |
| public void onUserSortOrderChanged() { |
| // Sort order change always triggers reload; we'll trigger state change |
| // on the flip side. |
| getLoaderManager().restartLoader(LOADER_ID, null, mCallbacks); |
| } |
| |
| public void onUserModeChanged() { |
| final ContentResolver resolver = getActivity().getContentResolver(); |
| final State state = getDisplayState(); |
| |
| final RootInfo root = getArguments().getParcelable(EXTRA_ROOT); |
| final DocumentInfo doc = getArguments().getParcelable(EXTRA_DOC); |
| |
| if (root != null && doc != null) { |
| final Uri stateUri = RecentsProvider.buildState( |
| root.authority, root.rootId, doc.documentId); |
| final ContentValues values = new ContentValues(); |
| values.put(StateColumns.MODE, state.userMode); |
| |
| new AsyncTask<Void, Void, Void>() { |
| @Override |
| protected Void doInBackground(Void... params) { |
| resolver.insert(stateUri, values); |
| return null; |
| } |
| }.execute(); |
| } |
| |
| // Mode change is just visual change; no need to kick loader, and |
| // deliver change event immediately. |
| state.derivedMode = state.userMode; |
| ((BaseActivity) getActivity()).onStateChanged(); |
| |
| updateDisplayState(); |
| } |
| |
| private void updateDisplayState() { |
| final State state = getDisplayState(); |
| |
| if (mLastMode == state.derivedMode && mLastShowSize == state.showSize) return; |
| mLastMode = state.derivedMode; |
| mLastShowSize = state.showSize; |
| |
| updateLayout(state.derivedMode); |
| |
| mRecView.setAdapter(mAdapter); |
| } |
| |
| /** |
| * Returns a {@code LayoutManager} for {@code mode}, lazily initializing |
| * classes as needed. |
| */ |
| private void updateLayout(int mode) { |
| final int thumbSize; |
| |
| final LayoutManager layout; |
| switch (mode) { |
| case MODE_GRID: |
| thumbSize = getResources().getDimensionPixelSize(R.dimen.grid_width); |
| if (mGridLayout == null) { |
| mGridLayout = new GridLayoutManager(getContext(), mColumnCount ); |
| } |
| layout = mGridLayout; |
| break; |
| case MODE_LIST: |
| thumbSize = getResources().getDimensionPixelSize(R.dimen.icon_size); |
| if (mListLayout == null) { |
| mListLayout = new LinearLayoutManager(getContext()); |
| } |
| layout = mListLayout; |
| break; |
| case MODE_UNKNOWN: |
| default: |
| throw new IllegalArgumentException("Unsupported layout mode: " + mode); |
| } |
| |
| mRecView.setLayoutManager(layout); |
| // TODO: Once b/23691541 is resolved, use a listener within MultiSelectManager instead of |
| // imperatively calling this function. |
| mSelectionManager.handleLayoutChanged(); |
| // setting layout manager automatically invalidates existing ViewHolders. |
| mThumbSize = new Point(thumbSize, thumbSize); |
| } |
| |
| private int calculateColumnCount() { |
| int cellWidth = getResources().getDimensionPixelSize(R.dimen.grid_width); |
| int cellMargin = 2 * getResources().getDimensionPixelSize(R.dimen.grid_item_margin); |
| int viewPadding = mRecView.getPaddingLeft() + mRecView.getPaddingRight(); |
| |
| checkState(mRecView.getWidth() > 0); |
| int columnCount = Math.max(1, |
| (mRecView.getWidth() - viewPadding) / (cellWidth + cellMargin)); |
| |
| return columnCount; |
| } |
| |
| /** |
| * Manages the integration between our ActionMode and MultiSelectManager, initiating |
| * ActionMode when there is a selection, canceling it when there is no selection, |
| * and clearing selection when action mode is explicitly exited by the user. |
| */ |
| private final class SelectionModeListener |
| implements MultiSelectManager.Callback, ActionMode.Callback { |
| |
| private Selection mSelected = new Selection(); |
| private ActionMode mActionMode; |
| private int mNoDeleteCount = 0; |
| private Menu mMenu; |
| |
| @Override |
| public boolean onBeforeItemStateChange(int position, boolean selected) { |
| if (selected) { |
| final Cursor cursor = mModel.getItem(position); |
| checkNotNull(cursor, "Cursor cannot be null."); |
| final String docMimeType = getCursorString(cursor, Document.COLUMN_MIME_TYPE); |
| final int docFlags = getCursorInt(cursor, Document.COLUMN_FLAGS); |
| return mTuner.canSelectType(docMimeType, docFlags); |
| } |
| return true; |
| } |
| |
| @Override |
| public void onItemStateChanged(int position, boolean selected) { |
| final Cursor cursor = mModel.getItem(position); |
| checkNotNull(cursor, "Cursor cannot be null."); |
| |
| final int docFlags = getCursorInt(cursor, Document.COLUMN_FLAGS); |
| if ((docFlags & Document.FLAG_SUPPORTS_DELETE) == 0) { |
| mNoDeleteCount += selected ? 1 : -1; |
| } |
| } |
| |
| @Override |
| public void onSelectionChanged() { |
| mSelectionManager.getSelection(mSelected); |
| TypedValue color = new TypedValue(); |
| if (mSelected.size() > 0) { |
| if (DEBUG) Log.d(TAG, "Maybe starting action mode."); |
| if (mActionMode == null) { |
| if (DEBUG) Log.d(TAG, "Yeah. Starting action mode."); |
| mActionMode = getActivity().startActionMode(this); |
| } |
| getActivity().getTheme().resolveAttribute(R.attr.colorActionMode, color, true); |
| updateActionMenu(); |
| } else { |
| if (DEBUG) Log.d(TAG, "Finishing action mode."); |
| if (mActionMode != null) { |
| mActionMode.finish(); |
| } |
| getActivity().getTheme().resolveAttribute( |
| android.R.attr.colorPrimaryDark, color, true); |
| } |
| getActivity().getWindow().setStatusBarColor(color.data); |
| |
| if (mActionMode != null) { |
| mActionMode.setTitle(String.valueOf(mSelected.size())); |
| } |
| } |
| |
| // Called when the user exits the action mode |
| @Override |
| public void onDestroyActionMode(ActionMode mode) { |
| if (DEBUG) Log.d(TAG, "Handling action mode destroyed."); |
| mActionMode = null; |
| // clear selection |
| mSelectionManager.clearSelection(); |
| mSelected.clear(); |
| mNoDeleteCount = 0; |
| } |
| |
| @Override |
| public boolean onCreateActionMode(ActionMode mode, Menu menu) { |
| int size = mSelectionManager.getSelection().size(); |
| mode.getMenuInflater().inflate(R.menu.mode_directory, menu); |
| mode.setTitle(TextUtils.formatSelectedCount(size)); |
| return (size > 0); |
| } |
| |
| @Override |
| public boolean onPrepareActionMode(ActionMode mode, Menu menu) { |
| mMenu = menu; |
| updateActionMenu(); |
| return true; |
| } |
| |
| private void updateActionMenu() { |
| checkNotNull(mMenu); |
| // Delegate update logic to our owning action, since specialized logic is desired. |
| mTuner.updateActionMenu(mMenu, mType, mNoDeleteCount == 0); |
| Menus.disableHiddenItems(mMenu); |
| } |
| |
| @Override |
| public boolean onActionItemClicked(ActionMode mode, MenuItem item) { |
| |
| Selection selection = mSelectionManager.getSelection(new Selection()); |
| |
| switch (item.getItemId()) { |
| case R.id.menu_open: |
| openDocuments(selection); |
| mode.finish(); |
| return true; |
| |
| case R.id.menu_share: |
| shareDocuments(selection); |
| mode.finish(); |
| return true; |
| |
| case R.id.menu_delete: |
| // Exit selection mode first, so we avoid deselecting deleted documents. |
| mode.finish(); |
| deleteDocuments(selection); |
| return true; |
| |
| case R.id.menu_copy_to: |
| transferDocuments(selection, CopyService.TRANSFER_MODE_COPY); |
| mode.finish(); |
| return true; |
| |
| case R.id.menu_move_to: |
| // Exit selection mode first, so we avoid deselecting deleted documents. |
| mode.finish(); |
| transferDocuments(selection, CopyService.TRANSFER_MODE_MOVE); |
| return true; |
| |
| case R.id.menu_copy_to_clipboard: |
| if (!selection.isEmpty()) { |
| copySelectionToClipboard(selection); |
| } |
| return true; |
| |
| case R.id.menu_select_all: |
| selectAllFiles(); |
| return true; |
| |
| default: |
| if (DEBUG) Log.d(TAG, "Unhandled menu item selected: " + item); |
| return false; |
| } |
| } |
| } |
| |
| private static void cancelThumbnailTask(View view) { |
| final ImageView iconThumb = (ImageView) view.findViewById(R.id.icon_thumb); |
| if (iconThumb != null) { |
| final ThumbnailAsyncTask oldTask = (ThumbnailAsyncTask) iconThumb.getTag(); |
| if (oldTask != null) { |
| oldTask.preempt(); |
| iconThumb.setTag(null); |
| } |
| } |
| } |
| |
| private void openDocuments(final Selection selected) { |
| new GetDocumentsTask() { |
| @Override |
| void onDocumentsReady(List<DocumentInfo> docs) { |
| // TODO: Implement support in Files activity for opening multiple docs. |
| BaseActivity.get(DirectoryFragment.this).onDocumentsPicked(docs); |
| } |
| }.execute(selected); |
| } |
| |
| private void shareDocuments(final Selection selected) { |
| new GetDocumentsTask() { |
| @Override |
| void onDocumentsReady(List<DocumentInfo> docs) { |
| Intent intent; |
| |
| // Filter out directories - those can't be shared. |
| List<DocumentInfo> docsForSend = new ArrayList<>(); |
| for (DocumentInfo doc: docs) { |
| if (!Document.MIME_TYPE_DIR.equals(doc.mimeType)) { |
| docsForSend.add(doc); |
| } |
| } |
| |
| if (docsForSend.size() == 1) { |
| final DocumentInfo doc = docsForSend.get(0); |
| |
| intent = new Intent(Intent.ACTION_SEND); |
| intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); |
| intent.addCategory(Intent.CATEGORY_DEFAULT); |
| intent.setType(doc.mimeType); |
| intent.putExtra(Intent.EXTRA_STREAM, doc.derivedUri); |
| |
| } else if (docsForSend.size() > 1) { |
| intent = new Intent(Intent.ACTION_SEND_MULTIPLE); |
| intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); |
| intent.addCategory(Intent.CATEGORY_DEFAULT); |
| |
| final ArrayList<String> mimeTypes = new ArrayList<>(); |
| final ArrayList<Uri> uris = new ArrayList<>(); |
| for (DocumentInfo doc : docsForSend) { |
| mimeTypes.add(doc.mimeType); |
| uris.add(doc.derivedUri); |
| } |
| |
| intent.setType(findCommonMimeType(mimeTypes)); |
| intent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, uris); |
| |
| } else { |
| return; |
| } |
| |
| intent = Intent.createChooser(intent, getActivity().getText(R.string.share_via)); |
| startActivity(intent); |
| } |
| }.execute(selected); |
| } |
| |
| private void deleteDocuments(final Selection selected) { |
| Context context = getActivity(); |
| String message = Shared.getQuantityString(context, R.plurals.deleting, selected.size()); |
| |
| mModel.markForDeletion(selected); |
| |
| final Activity activity = getActivity(); |
| Snackbars.makeSnackbar(activity, message, Snackbar.LENGTH_LONG) |
| .setAction( |
| R.string.undo, |
| new View.OnClickListener() { |
| @Override |
| public void onClick(View view) {} |
| }) |
| .setCallback( |
| new Snackbar.Callback() { |
| @Override |
| public void onDismissed(Snackbar snackbar, int event) { |
| if (event == Snackbar.Callback.DISMISS_EVENT_ACTION) { |
| mModel.undoDeletion(); |
| } else { |
| mModel.finalizeDeletion( |
| new Model.DeletionListener() { |
| @Override |
| public void onError() { |
| Snackbars.makeSnackbar( |
| activity, |
| R.string.toast_failed_delete, |
| Snackbar.LENGTH_LONG) |
| .show(); |
| |
| } |
| }); |
| } |
| } |
| }) |
| .show(); |
| } |
| |
| private void transferDocuments(final Selection selected, final int mode) { |
| // Pop up a dialog to pick a destination. This is inadequate but works for now. |
| // TODO: Implement a picker that is to spec. |
| final Intent intent = new Intent( |
| Shared.ACTION_PICK_COPY_DESTINATION, |
| Uri.EMPTY, |
| getActivity(), |
| DocumentsActivity.class); |
| |
| new GetDocumentsTask() { |
| @Override |
| void onDocumentsReady(List<DocumentInfo> docs) { |
| getDisplayState().selectedDocumentsForCopy = docs; |
| |
| boolean directoryCopy = false; |
| for (DocumentInfo info : docs) { |
| if (Document.MIME_TYPE_DIR.equals(info.mimeType)) { |
| directoryCopy = true; |
| break; |
| } |
| } |
| intent.putExtra(Shared.EXTRA_DIRECTORY_COPY, directoryCopy); |
| intent.putExtra(CopyService.EXTRA_TRANSFER_MODE, mode); |
| startActivityForResult(intent, REQUEST_COPY_DESTINATION); |
| } |
| }.execute(selected); |
| } |
| |
| private State getDisplayState() { |
| return ((BaseActivity) getActivity()).getDisplayState(); |
| } |
| |
| // Provide a reference to the views for each data item |
| // Complex data items may need more than one view per item, and |
| // you provide access to all the views for a data item in a view holder |
| private final class DocumentHolder |
| extends RecyclerView.ViewHolder |
| implements View.OnKeyListener |
| { |
| public String docId; // The stable document id. |
| private ClickListener mClickListener; |
| private View.OnKeyListener mKeyListener; |
| |
| public DocumentHolder(View view) { |
| super(view); |
| view.setOnKeyListener(this); |
| } |
| |
| public void setSelected(boolean selected) { |
| itemView.setActivated(selected); |
| itemView.setBackgroundColor(selected ? mSelectedItemColor : mDefaultItemColor); |
| } |
| |
| @Override |
| public boolean onKey(View v, int keyCode, KeyEvent event) { |
| // Intercept enter key-up events, and treat them as clicks. Forward other events. |
| if (event.getAction() == KeyEvent.ACTION_UP && |
| keyCode == KeyEvent.KEYCODE_ENTER) { |
| if (mClickListener != null) { |
| mClickListener.onClick(this); |
| } |
| return true; |
| } else if (mKeyListener != null) { |
| return mKeyListener.onKey(v, keyCode, event); |
| } |
| return false; |
| } |
| |
| public void addClickListener(ClickListener listener) { |
| // Just handle one for now; switch to a list if necessary. |
| checkState(mClickListener == null); |
| mClickListener = listener; |
| } |
| |
| public void addOnKeyListener(View.OnKeyListener listener) { |
| // Just handle one for now; switch to a list if necessary. |
| checkState(mKeyListener == null); |
| mKeyListener = listener; |
| } |
| } |
| |
| interface ClickListener { |
| public void onClick(DocumentHolder doc); |
| } |
| |
| void showEmptyView() { |
| mEmptyView.setVisibility(View.VISIBLE); |
| mRecView.setVisibility(View.GONE); |
| TextView msg = (TextView) mEmptyView.findViewById(R.id.message); |
| msg.setText(R.string.empty); |
| // No retry button for the empty view. |
| mEmptyView.findViewById(R.id.button_retry).setVisibility(View.GONE); |
| } |
| |
| void showErrorView() { |
| mEmptyView.setVisibility(View.VISIBLE); |
| mRecView.setVisibility(View.GONE); |
| TextView msg = (TextView) mEmptyView.findViewById(R.id.message); |
| msg.setText(R.string.query_error); |
| // TODO: Enable this once the retry button does something. |
| mEmptyView.findViewById(R.id.button_retry).setVisibility(View.GONE); |
| } |
| |
| void showRecyclerView() { |
| mEmptyView.setVisibility(View.GONE); |
| mRecView.setVisibility(View.VISIBLE); |
| } |
| |
| private final class DocumentsAdapter extends RecyclerView.Adapter<DocumentHolder> { |
| |
| private final Context mContext; |
| private final LayoutInflater mInflater; |
| |
| public DocumentsAdapter(Context context) { |
| mContext = context; |
| mInflater = LayoutInflater.from(context); |
| } |
| |
| @Override |
| public DocumentHolder onCreateViewHolder(ViewGroup parent, int viewType) { |
| final State state = getDisplayState(); |
| final LayoutInflater inflater = LayoutInflater.from(getContext()); |
| View item = null; |
| switch (state.derivedMode) { |
| case MODE_GRID: |
| item = inflater.inflate(R.layout.item_doc_grid, parent, false); |
| break; |
| case MODE_LIST: |
| item = inflater.inflate(R.layout.item_doc_list, parent, false); |
| break; |
| case MODE_UNKNOWN: |
| default: |
| throw new IllegalStateException("Unsupported layout mode."); |
| } |
| |
| DocumentHolder holder = new DocumentHolder(item); |
| holder.addClickListener(mItemClickListener); |
| holder.addOnKeyListener(mSelectionManager); |
| return holder; |
| } |
| |
| /** |
| * Deal with selection changed events by using a custom ItemAnimator that just changes the |
| * background color. This works around focus issues (otherwise items lose focus when their |
| * selection state changes) but also optimizes change animations for selection. |
| */ |
| @Override |
| public void onBindViewHolder(DocumentHolder holder, int position, List<Object> payload) { |
| final View itemView = holder.itemView; |
| |
| if (payload.contains(MultiSelectManager.SELECTION_CHANGED_MARKER)) { |
| final boolean selected = isSelected(position); |
| itemView.setActivated(selected); |
| return; |
| } else { |
| onBindViewHolder(holder, position); |
| } |
| } |
| |
| @Override |
| public void onBindViewHolder(DocumentHolder holder, int position) { |
| |
| final Context context = getContext(); |
| final State state = getDisplayState(); |
| final RootsCache roots = DocumentsApplication.getRootsCache(context); |
| final ThumbnailCache thumbs = DocumentsApplication.getThumbnailsCache( |
| context, mThumbSize); |
| |
| final Cursor cursor = mModel.getItem(position); |
| checkNotNull(cursor, "Cursor cannot be null."); |
| |
| final String docAuthority = getCursorString(cursor, RootCursorWrapper.COLUMN_AUTHORITY); |
| final String docRootId = getCursorString(cursor, RootCursorWrapper.COLUMN_ROOT_ID); |
| final String docId = getCursorString(cursor, Document.COLUMN_DOCUMENT_ID); |
| final String docMimeType = getCursorString(cursor, Document.COLUMN_MIME_TYPE); |
| final String docDisplayName = getCursorString(cursor, Document.COLUMN_DISPLAY_NAME); |
| final long docLastModified = getCursorLong(cursor, Document.COLUMN_LAST_MODIFIED); |
| final int docIcon = getCursorInt(cursor, Document.COLUMN_ICON); |
| final int docFlags = getCursorInt(cursor, Document.COLUMN_FLAGS); |
| final String docSummary = getCursorString(cursor, Document.COLUMN_SUMMARY); |
| final long docSize = getCursorLong(cursor, Document.COLUMN_SIZE); |
| |
| holder.docId = docId; |
| final View itemView = holder.itemView; |
| |
| holder.setSelected(isSelected(position)); |
| |
| final ImageView iconMime = (ImageView) itemView.findViewById(R.id.icon_mime); |
| final ImageView iconThumb = (ImageView) itemView.findViewById(R.id.icon_thumb); |
| final TextView title = (TextView) itemView.findViewById(android.R.id.title); |
| final ImageView icon1 = (ImageView) itemView.findViewById(android.R.id.icon1); |
| final TextView summary = (TextView) itemView.findViewById(android.R.id.summary); |
| final TextView date = (TextView) itemView.findViewById(R.id.date); |
| final TextView size = (TextView) itemView.findViewById(R.id.size); |
| |
| final ThumbnailAsyncTask oldTask = (ThumbnailAsyncTask) iconThumb.getTag(); |
| if (oldTask != null) { |
| oldTask.preempt(); |
| iconThumb.setTag(null); |
| } |
| |
| iconMime.animate().cancel(); |
| iconThumb.animate().cancel(); |
| |
| final boolean supportsThumbnail = (docFlags & Document.FLAG_SUPPORTS_THUMBNAIL) != 0; |
| final boolean allowThumbnail = (state.derivedMode == MODE_GRID) |
| || MimePredicate.mimeMatches(MimePredicate.VISUAL_MIMES, docMimeType); |
| final boolean showThumbnail = supportsThumbnail && allowThumbnail && !mSvelteRecents; |
| |
| final boolean enabled = mTuner.isDocumentEnabled(docMimeType, docFlags); |
| final float iconAlpha = (state.derivedMode == MODE_LIST && !enabled) ? 0.5f : 1f; |
| |
| boolean cacheHit = false; |
| if (showThumbnail) { |
| final Uri uri = DocumentsContract.buildDocumentUri(docAuthority, docId); |
| final Bitmap cachedResult = thumbs.get(uri); |
| if (cachedResult != null) { |
| iconThumb.setImageBitmap(cachedResult); |
| cacheHit = true; |
| } else { |
| iconThumb.setImageDrawable(null); |
| // TODO: Hang this off DocumentHolder? |
| final ThumbnailAsyncTask task = new ThumbnailAsyncTask( |
| uri, iconMime, iconThumb, mThumbSize, iconAlpha); |
| iconThumb.setTag(task); |
| ProviderExecutor.forAuthority(docAuthority).execute(task); |
| } |
| } |
| |
| // Always throw MIME icon into place, even when a thumbnail is being |
| // loaded in background. |
| if (cacheHit) { |
| iconMime.setAlpha(0f); |
| iconMime.setImageDrawable(null); |
| iconThumb.setAlpha(1f); |
| } else { |
| iconMime.setAlpha(1f); |
| iconThumb.setAlpha(0f); |
| iconThumb.setImageDrawable(null); |
| iconMime.setImageDrawable( |
| getDocumentIcon(mContext, docAuthority, docId, docMimeType, docIcon, state)); |
| } |
| |
| if ((state.derivedMode == MODE_GRID) && mHideGridTitles) { |
| title.setVisibility(View.GONE); |
| } else { |
| title.setText(docDisplayName); |
| title.setVisibility(View.VISIBLE); |
| } |
| |
| Drawable iconDrawable = null; |
| if (mType == TYPE_RECENT_OPEN) { |
| // We've already had to enumerate roots before any results can |
| // be shown, so this will never block. |
| final RootInfo root = roots.getRootBlocking(docAuthority, docRootId); |
| iconDrawable = root.loadIcon(mContext); |
| |
| if (summary != null) { |
| final boolean alwaysShowSummary = getResources() |
| .getBoolean(R.bool.always_show_summary); |
| if (alwaysShowSummary) { |
| summary.setText(root.getDirectoryString()); |
| summary.setVisibility(View.VISIBLE); |
| } else { |
| if (iconDrawable != null && roots.isIconUniqueBlocking(root)) { |
| // No summary needed if icon speaks for itself |
| summary.setVisibility(View.INVISIBLE); |
| } else { |
| summary.setText(root.getDirectoryString()); |
| summary.setVisibility(View.VISIBLE); |
| summary.setTextAlignment(TextView.TEXT_ALIGNMENT_TEXT_END); |
| } |
| } |
| } |
| } else { |
| // Directories showing thumbnails in grid mode get a little icon |
| // hint to remind user they're a directory. |
| if (Document.MIME_TYPE_DIR.equals(docMimeType) && state.derivedMode == MODE_GRID |
| && showThumbnail) { |
| iconDrawable = IconUtils.applyTintAttr(mContext, R.drawable.ic_doc_folder, |
| android.R.attr.textColorPrimaryInverse); |
| } |
| |
| if (summary != null) { |
| if (docSummary != null) { |
| summary.setText(docSummary); |
| summary.setVisibility(View.VISIBLE); |
| } else { |
| summary.setVisibility(View.INVISIBLE); |
| } |
| } |
| } |
| |
| if (iconDrawable != null) { |
| icon1.setVisibility(View.VISIBLE); |
| icon1.setImageDrawable(iconDrawable); |
| } else { |
| icon1.setVisibility(View.GONE); |
| } |
| |
| if (docLastModified == -1) { |
| date.setText(null); |
| } else { |
| date.setText(formatTime(mContext, docLastModified)); |
| } |
| |
| if (!state.showSize || Document.MIME_TYPE_DIR.equals(docMimeType) || docSize == -1) { |
| size.setVisibility(View.GONE); |
| } else { |
| size.setVisibility(View.VISIBLE); |
| size.setText(Formatter.formatFileSize(mContext, docSize)); |
| } |
| |
| setEnabledRecursive(itemView, enabled); |
| |
| iconMime.setAlpha(iconAlpha); |
| iconThumb.setAlpha(iconAlpha); |
| icon1.setAlpha(iconAlpha); |
| |
| if (DEBUG_ENABLE_DND) { |
| setupDragAndDropOnDocumentView(itemView, cursor); |
| } |
| } |
| |
| @Override |
| public int getItemCount() { |
| return mModel.getItemCount(); |
| } |
| |
| } |
| |
| private static String formatTime(Context context, long when) { |
| // TODO: DateUtils should make this easier |
| Time then = new Time(); |
| then.set(when); |
| Time now = new Time(); |
| now.setToNow(); |
| |
| int flags = DateUtils.FORMAT_NO_NOON | DateUtils.FORMAT_NO_MIDNIGHT |
| | DateUtils.FORMAT_ABBREV_ALL; |
| |
| if (then.year != now.year) { |
| flags |= DateUtils.FORMAT_SHOW_YEAR | DateUtils.FORMAT_SHOW_DATE; |
| } else if (then.yearDay != now.yearDay) { |
| flags |= DateUtils.FORMAT_SHOW_DATE; |
| } else { |
| flags |= DateUtils.FORMAT_SHOW_TIME; |
| } |
| |
| return DateUtils.formatDateTime(context, when, flags); |
| } |
| |
| private String findCommonMimeType(List<String> mimeTypes) { |
| String[] commonType = mimeTypes.get(0).split("/"); |
| if (commonType.length != 2) { |
| return "*/*"; |
| } |
| |
| for (int i = 1; i < mimeTypes.size(); i++) { |
| String[] type = mimeTypes.get(i).split("/"); |
| if (type.length != 2) continue; |
| |
| if (!commonType[1].equals(type[1])) { |
| commonType[1] = "*"; |
| } |
| |
| if (!commonType[0].equals(type[0])) { |
| commonType[0] = "*"; |
| commonType[1] = "*"; |
| break; |
| } |
| } |
| |
| return commonType[0] + "/" + commonType[1]; |
| } |
| |
| private void setEnabledRecursive(View v, boolean enabled) { |
| if (v == null) return; |
| if (v.isEnabled() == enabled) return; |
| v.setEnabled(enabled); |
| |
| if (v instanceof ViewGroup) { |
| final ViewGroup vg = (ViewGroup) v; |
| for (int i = vg.getChildCount() - 1; i >= 0; i--) { |
| setEnabledRecursive(vg.getChildAt(i), enabled); |
| } |
| } |
| } |
| |
| private void copyFromClipboard() { |
| new AsyncTask<Void, Void, List<DocumentInfo>>() { |
| |
| @Override |
| protected List<DocumentInfo> doInBackground(Void... params) { |
| return mClipper.getClippedDocuments(); |
| } |
| |
| @Override |
| protected void onPostExecute(List<DocumentInfo> docs) { |
| DocumentInfo destination = |
| ((BaseActivity) getActivity()).getCurrentDirectory(); |
| copyDocuments(docs, destination); |
| } |
| }.execute(); |
| } |
| |
| private void copyFromClipData(final ClipData clipData, final DocumentInfo destination) { |
| checkNotNull(clipData); |
| new AsyncTask<Void, Void, List<DocumentInfo>>() { |
| |
| @Override |
| protected List<DocumentInfo> doInBackground(Void... params) { |
| return mClipper.getDocumentsFromClipData(clipData); |
| } |
| |
| @Override |
| protected void onPostExecute(List<DocumentInfo> docs) { |
| copyDocuments(docs, destination); |
| } |
| }.execute(); |
| } |
| |
| private void copyDocuments(final List<DocumentInfo> docs, final DocumentInfo destination) { |
| if (!canCopy(docs, destination)) { |
| Snackbars.makeSnackbar( |
| getActivity(), |
| R.string.clipboard_files_cannot_paste, |
| Snackbar.LENGTH_SHORT) |
| .show(); |
| return; |
| } |
| |
| if (docs.isEmpty()) { |
| return; |
| } |
| |
| final DocumentStack curStack = getDisplayState().stack; |
| DocumentStack tmpStack = new DocumentStack(); |
| if (destination != null) { |
| tmpStack.push(destination); |
| tmpStack.addAll(curStack); |
| } else { |
| tmpStack = curStack; |
| } |
| |
| CopyService.start(getActivity(), docs, tmpStack, CopyService.TRANSFER_MODE_COPY); |
| } |
| |
| private ClipData getClipDataFromDocuments(List<DocumentInfo> docs) { |
| Context context = getActivity(); |
| final ContentResolver resolver = context.getContentResolver(); |
| ClipData clipData = null; |
| for (DocumentInfo doc : docs) { |
| final Uri uri = DocumentsContract.buildDocumentUri(doc.authority, doc.documentId); |
| if (clipData == null) { |
| // TODO: figure out what this string should be. |
| // Currently it is not displayed anywhere in the UI, but this might change. |
| final String label = ""; |
| clipData = ClipData.newUri(resolver, label, uri); |
| } else { |
| // TODO: update list of mime types in ClipData. |
| clipData.addItem(new ClipData.Item(uri)); |
| } |
| } |
| return clipData; |
| } |
| |
| public void copySelectedToClipboard() { |
| Selection selection = mSelectionManager.getSelection(new Selection()); |
| if (!selection.isEmpty()) { |
| copySelectionToClipboard(selection); |
| } |
| } |
| |
| void copySelectionToClipboard(Selection selection) { |
| checkArgument(!selection.isEmpty()); |
| new GetDocumentsTask() { |
| @Override |
| void onDocumentsReady(List<DocumentInfo> docs) { |
| mClipper.clipDocuments(docs); |
| Activity activity = getActivity(); |
| Snackbars.makeSnackbar(activity, |
| activity.getResources().getQuantityString( |
| R.plurals.clipboard_files_clipped, docs.size(), docs.size()), |
| Snackbar.LENGTH_SHORT).show(); |
| } |
| }.execute(selection); |
| } |
| |
| public void pasteFromClipboard() { |
| copyFromClipboard(); |
| getActivity().invalidateOptionsMenu(); |
| } |
| |
| /** |
| * Returns true if the list of files can be copied to destination. Note that this |
| * is a policy check only. Currently the method does not attempt to verify |
| * available space or any other environmental aspects possibly resulting in |
| * failure to copy. |
| * |
| * @return true if the list of files can be copied to destination. |
| */ |
| boolean canCopy(List<DocumentInfo> files, DocumentInfo dest) { |
| BaseActivity activity = (BaseActivity) getActivity(); |
| |
| final RootInfo root = activity.getCurrentRoot(); |
| |
| // Can't copy folders to Downloads. |
| if (root.isDownloads()) { |
| for (DocumentInfo docs : files) { |
| if (docs.isDirectory()) { |
| return false; |
| } |
| } |
| } |
| |
| return dest != null && dest.isDirectory() && dest.isCreateSupported(); |
| } |
| |
| public void selectAllFiles() { |
| boolean changed = mSelectionManager.setItemsSelected(0, mModel.getItemCount(), true); |
| if (changed) { |
| updateDisplayState(); |
| } |
| } |
| |
| private void setupDragAndDropOnDirectoryView(View view) { |
| // Listen for drops on non-directory items and empty space. |
| view.setOnDragListener(mOnDragListener); |
| } |
| |
| private void setupDragAndDropOnDocumentView(View view, Cursor cursor) { |
| final String docMimeType = getCursorString(cursor, Document.COLUMN_MIME_TYPE); |
| if (Document.MIME_TYPE_DIR.equals(docMimeType)) { |
| // Make a directory item a drop target. Drop on non-directories and empty space |
| // is handled at the list/grid view level. |
| 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); |
| } |
| |
| private View.OnDragListener mOnDragListener = new View.OnDragListener() { |
| @Override |
| public boolean onDrag(View v, DragEvent event) { |
| switch (event.getAction()) { |
| case DragEvent.ACTION_DRAG_STARTED: |
| // TODO: Check if the event contains droppable data. |
| return true; |
| |
| // TODO: Highlight potential drop target directory? |
| // TODO: Expand drop target directory on hover? |
| case DragEvent.ACTION_DRAG_ENTERED: |
| case DragEvent.ACTION_DRAG_LOCATION: |
| case DragEvent.ACTION_DRAG_EXITED: |
| case DragEvent.ACTION_DRAG_ENDED: |
| return true; |
| |
| case DragEvent.ACTION_DROP: |
| int dstPosition = mRecView.getChildAdapterPosition(getContainingItemView(v)); |
| DocumentInfo dstDir = null; |
| if (dstPosition != android.widget.AdapterView.INVALID_POSITION) { |
| Cursor dstCursor = mModel.getItem(dstPosition); |
| checkNotNull(dstCursor, "Cursor cannot be null."); |
| dstDir = DocumentInfo.fromDirectoryCursor(dstCursor); |
| // TODO: Do not drop into the directory where the documents came from. |
| } |
| copyFromClipData(event.getClipData(), dstDir); |
| return true; |
| } |
| return false; |
| } |
| }; |
| |
| private View getContainingItemView(View view) { |
| while (true) { |
| if (view.getLayoutParams() instanceof RecyclerView.LayoutParams) { |
| return view; |
| } |
| ViewParent parent = view.getParent(); |
| if (parent == null || !(parent instanceof View)) { |
| return null; |
| } |
| view = (View) parent; |
| } |
| } |
| |
| 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) { |
| int position = mRecView.getChildAdapterPosition(getContainingItemView(currentItemView)); |
| if (position == android.widget.AdapterView.INVALID_POSITION) { |
| return Collections.EMPTY_LIST; |
| } |
| |
| final List<DocumentInfo> selectedDocs = |
| mModel.getDocuments(mSelectionManager.getSelection()); |
| if (!selectedDocs.isEmpty()) { |
| if (!isSelected(position)) { |
| // There is a selection that does not include the current item, drag nothing. |
| return Collections.EMPTY_LIST; |
| } |
| return selectedDocs; |
| } |
| |
| final Cursor cursor = mModel.getItem(position); |
| checkNotNull(cursor, "Cursor cannot be null."); |
| final DocumentInfo doc = DocumentInfo.fromDirectoryCursor(cursor); |
| |
| return Lists.newArrayList(doc); |
| } |
| |
| private Drawable getDragShadowIcon(List<DocumentInfo> docs) { |
| if (docs.size() == 1) { |
| final DocumentInfo doc = docs.get(0); |
| return getDocumentIcon(getActivity(), doc.authority, doc.documentId, |
| doc.mimeType, doc.icon, getDisplayState()); |
| } |
| return getActivity().getDrawable(R.drawable.ic_doc_generic); |
| } |
| |
| public static Drawable getDocumentIcon(Context context, String docAuthority, String docId, |
| String docMimeType, int docIcon, State state) { |
| if (docIcon != 0) { |
| return IconUtils.loadPackageIcon(context, docAuthority, docIcon); |
| } else { |
| return IconUtils.loadMimeIcon(context, docMimeType, docAuthority, docId, |
| state.derivedMode); |
| } |
| } |
| |
| private static class ThumbnailAsyncTask extends AsyncTask<Uri, Void, Bitmap> |
| implements Preemptable { |
| private final Uri mUri; |
| private final ImageView mIconMime; |
| private final ImageView mIconThumb; |
| private final Point mThumbSize; |
| private final float mTargetAlpha; |
| private final CancellationSignal mSignal; |
| |
| public ThumbnailAsyncTask(Uri uri, ImageView iconMime, ImageView iconThumb, Point thumbSize, |
| float targetAlpha) { |
| mUri = uri; |
| mIconMime = iconMime; |
| mIconThumb = iconThumb; |
| mThumbSize = thumbSize; |
| mTargetAlpha = targetAlpha; |
| mSignal = new CancellationSignal(); |
| } |
| |
| @Override |
| public void preempt() { |
| cancel(false); |
| mSignal.cancel(); |
| } |
| |
| @Override |
| protected Bitmap doInBackground(Uri... params) { |
| if (isCancelled()) return null; |
| |
| final Context context = mIconThumb.getContext(); |
| final ContentResolver resolver = context.getContentResolver(); |
| |
| ContentProviderClient client = null; |
| Bitmap result = null; |
| try { |
| client = DocumentsApplication.acquireUnstableProviderOrThrow( |
| resolver, mUri.getAuthority()); |
| result = DocumentsContract.getDocumentThumbnail(client, mUri, mThumbSize, mSignal); |
| if (result != null) { |
| final ThumbnailCache thumbs = DocumentsApplication.getThumbnailsCache( |
| context, mThumbSize); |
| thumbs.put(mUri, result); |
| } |
| } catch (Exception e) { |
| if (!(e instanceof OperationCanceledException)) { |
| Log.w(TAG, "Failed to load thumbnail for " + mUri + ": " + e); |
| } |
| } finally { |
| ContentProviderClient.releaseQuietly(client); |
| } |
| return result; |
| } |
| |
| @Override |
| protected void onPostExecute(Bitmap result) { |
| if (mIconThumb.getTag() == this && result != null) { |
| mIconThumb.setTag(null); |
| mIconThumb.setImageBitmap(result); |
| |
| mIconMime.setAlpha(mTargetAlpha); |
| mIconMime.animate().alpha(0f).start(); |
| mIconThumb.setAlpha(0f); |
| mIconThumb.animate().alpha(mTargetAlpha).start(); |
| } |
| } |
| } |
| |
| private class DrawableShadowBuilder extends View.DragShadowBuilder { |
| |
| private final Drawable mShadow; |
| |
| private final int mShadowDimension; |
| |
| public DrawableShadowBuilder(Drawable shadow) { |
| mShadow = shadow; |
| mShadowDimension = getResources().getDimensionPixelSize( |
| R.dimen.drag_shadow_size); |
| mShadow.setBounds(0, 0, mShadowDimension, mShadowDimension); |
| } |
| |
| @Override |
| public void onProvideShadowMetrics( |
| Point shadowSize, Point shadowTouchPoint) { |
| shadowSize.set(mShadowDimension, mShadowDimension); |
| shadowTouchPoint.set(mShadowDimension / 2, mShadowDimension / 2); |
| } |
| |
| @Override |
| public void onDrawShadow(Canvas canvas) { |
| mShadow.draw(canvas); |
| } |
| } |
| |
| /** |
| * Abstract task providing support for loading documents *off* |
| * the main thread. And if it isn't obvious, creating a list |
| * of documents (especially large lists) can be pretty expensive. |
| */ |
| private abstract class GetDocumentsTask |
| extends AsyncTask<Selection, Void, List<DocumentInfo>> { |
| @Override |
| protected final List<DocumentInfo> doInBackground(Selection... selected) { |
| return mModel.getDocuments(selected[0]); |
| } |
| |
| @Override |
| protected final void onPostExecute(List<DocumentInfo> docs) { |
| onDocumentsReady(docs); |
| } |
| |
| abstract void onDocumentsReady(List<DocumentInfo> docs); |
| } |
| |
| boolean isSelected(int position) { |
| return mSelectionManager.getSelection().contains(position); |
| } |
| |
| /** |
| * The data model for the current loaded directory. |
| */ |
| @VisibleForTesting |
| public static final class Model implements DocumentContext { |
| private RecyclerView.Adapter<?> mViewAdapter; |
| private Context mContext; |
| private int mCursorCount; |
| private boolean mIsLoading; |
| @GuardedBy("mPendingDelete") |
| private Boolean mPendingDelete = false; |
| @GuardedBy("mPendingDelete") |
| private SparseBooleanArray mMarkedForDeletion = new SparseBooleanArray(); |
| private UpdateListener mUpdateListener; |
| @Nullable private Cursor mCursor; |
| @Nullable private String info; |
| @Nullable private String error; |
| |
| Model(Context context, RecyclerView.Adapter<?> viewAdapter) { |
| mContext = context; |
| mViewAdapter = viewAdapter; |
| } |
| |
| void update(DirectoryResult result) { |
| if (DEBUG) Log.i(TAG, "Updating model with new result set."); |
| |
| if (result == null) { |
| mCursor = null; |
| mCursorCount = 0; |
| info = null; |
| error = null; |
| mIsLoading = false; |
| mUpdateListener.onModelUpdate(this); |
| return; |
| } |
| |
| if (result.exception != null) { |
| Log.e(TAG, "Error while loading directory contents", result.exception); |
| mUpdateListener.onModelUpdateFailed(result.exception); |
| return; |
| } |
| |
| mCursor = result.cursor; |
| mCursorCount = mCursor.getCount(); |
| |
| final Bundle extras = mCursor.getExtras(); |
| if (extras != null) { |
| info = extras.getString(DocumentsContract.EXTRA_INFO); |
| error = extras.getString(DocumentsContract.EXTRA_ERROR); |
| mIsLoading = extras.getBoolean(DocumentsContract.EXTRA_LOADING, false); |
| } |
| |
| mUpdateListener.onModelUpdate(this); |
| } |
| |
| int getItemCount() { |
| synchronized(mPendingDelete) { |
| return mCursorCount - mMarkedForDeletion.size(); |
| } |
| } |
| |
| Cursor getItem(int position) { |
| synchronized(mPendingDelete) { |
| // Items marked for deletion are masked out of the UI. To do this, for every marked |
| // item whose position is less than the requested item position, advance the requested |
| // position by 1. |
| final int originalPos = position; |
| final int size = mMarkedForDeletion.size(); |
| for (int i = 0; i < size; ++i) { |
| // It'd be more concise, but less efficient, to iterate over positions while calling |
| // mMarkedForDeletion.get. Instead, iterate over deleted entries. |
| if (mMarkedForDeletion.keyAt(i) <= position && mMarkedForDeletion.valueAt(i)) { |
| ++position; |
| } |
| } |
| |
| if (DEBUG && position != originalPos) { |
| Log.d(TAG, "Item position adjusted for deletion. Original: " + originalPos |
| + " Adjusted: " + position); |
| } |
| |
| if (position >= mCursorCount) { |
| throw new IndexOutOfBoundsException("Attempt to retrieve " + position + " of " + |
| mCursorCount + " items"); |
| } |
| |
| mCursor.moveToPosition(position); |
| return mCursor; |
| } |
| } |
| |
| private boolean isEmpty() { |
| return mCursorCount == 0; |
| } |
| |
| private boolean isLoading() { |
| return mIsLoading; |
| } |
| |
| List<DocumentInfo> getDocuments(Selection items) { |
| final int size = (items != null) ? items.size() : 0; |
| |
| final List<DocumentInfo> docs = new ArrayList<>(size); |
| for (int i = 0; i < size; i++) { |
| final Cursor cursor = getItem(items.get(i)); |
| checkNotNull(cursor, "Cursor cannot be null."); |
| final DocumentInfo doc = DocumentInfo.fromDirectoryCursor(cursor); |
| docs.add(doc); |
| } |
| return docs; |
| } |
| |
| @Override |
| public Cursor getCursor() { |
| if (Looper.myLooper() != Looper.getMainLooper()) { |
| throw new IllegalStateException("Can't call getCursor from non-main thread."); |
| } |
| return mCursor; |
| } |
| |
| List<DocumentInfo> getDocumentsMarkedForDeletion() { |
| synchronized (mPendingDelete) { |
| final int size = mMarkedForDeletion.size(); |
| List<DocumentInfo> docs = new ArrayList<>(size); |
| |
| for (int i = 0; i < size; ++i) { |
| final int position = mMarkedForDeletion.keyAt(i); |
| checkState(position < mCursorCount); |
| mCursor.moveToPosition(position); |
| final DocumentInfo doc = DocumentInfo.fromDirectoryCursor(mCursor); |
| docs.add(doc); |
| } |
| return docs; |
| } |
| } |
| |
| /** |
| * Marks the given files for deletion. This will remove them from the UI. Clients must then |
| * call either {@link #undoDeletion()} or {@link #finalizeDeletion()} to cancel or confirm |
| * the deletion, respectively. Only one deletion operation is allowed at a time. |
| * |
| * @param selected A selection representing the files to delete. |
| */ |
| void markForDeletion(Selection selected) { |
| synchronized (mPendingDelete) { |
| mPendingDelete = true; |
| // Only one deletion operation at a time. |
| checkState(mMarkedForDeletion.size() == 0); |
| // There should never be more to delete than what exists. |
| checkState(mCursorCount >= selected.size()); |
| |
| int[] positions = selected.getAll(); |
| Arrays.sort(positions); |
| |
| // Walk backwards through the set, since we're removing positions. |
| // Otherwise, positions would change after the first modification. |
| for (int p = positions.length - 1; p >= 0; p--) { |
| mMarkedForDeletion.append(positions[p], true); |
| mViewAdapter.notifyItemRemoved(positions[p]); |
| if (DEBUG) Log.d(TAG, "Scheduled " + positions[p] + " for delete."); |
| } |
| } |
| } |
| |
| /** |
| * Cancels an ongoing deletion operation. All files currently marked for deletion will be |
| * unmarked, and restored in the UI. See {@link #markForDeletion(Selection)}. |
| */ |
| void undoDeletion() { |
| synchronized (mPendingDelete) { |
| // Iterate over deleted items, temporarily marking them false in the deletion list, and |
| // re-adding them to the UI. |
| final int size = mMarkedForDeletion.size(); |
| for (int i = 0; i < size; ++i) { |
| final int position = mMarkedForDeletion.keyAt(i); |
| mMarkedForDeletion.put(position, false); |
| mViewAdapter.notifyItemInserted(position); |
| } |
| resetDeleteData(); |
| } |
| } |
| |
| private void resetDeleteData() { |
| synchronized (mPendingDelete) { |
| mPendingDelete = false; |
| mMarkedForDeletion.clear(); |
| } |
| } |
| |
| /** |
| * Finalizes an ongoing deletion operation. All files currently marked for deletion will be |
| * deleted. See {@link #markForDeletion(Selection)}. |
| * |
| * @param view The view which will be used to interact with the user (e.g. surfacing |
| * snackbars) for errors, info, etc. |
| */ |
| void finalizeDeletion(DeletionListener listener) { |
| synchronized (mPendingDelete) { |
| if (mPendingDelete) { |
| // Necessary to avoid b/25072545. Even when that's resolved, this |
| // is a nice safe thing to day. |
| mPendingDelete = false; |
| final ContentResolver resolver = mContext.getContentResolver(); |
| DeleteFilesTask task = new DeleteFilesTask(resolver, listener); |
| task.execute(); |
| } |
| } |
| } |
| |
| /** |
| * A Task which collects the DocumentInfo for documents that have been marked for deletion, |
| * and actually deletes them. |
| */ |
| private class DeleteFilesTask extends AsyncTask<Void, Void, List<DocumentInfo>> { |
| private ContentResolver mResolver; |
| private DeletionListener mListener; |
| |
| /** |
| * @param resolver A ContentResolver for performing the actual file deletions. |
| * @param errorCallback A Runnable that is executed in the event that one or more errors |
| * occured while copying files. Execution will occur on the UI thread. |
| */ |
| public DeleteFilesTask(ContentResolver resolver, DeletionListener listener) { |
| mResolver = resolver; |
| mListener = listener; |
| } |
| |
| @Override |
| protected List<DocumentInfo> doInBackground(Void... params) { |
| return getDocumentsMarkedForDeletion(); |
| } |
| |
| @Override |
| protected void onPostExecute(List<DocumentInfo> docs) { |
| boolean hadTrouble = false; |
| for (DocumentInfo doc : docs) { |
| if (!doc.isDeleteSupported()) { |
| Log.w(TAG, doc + " could not be deleted. Skipping..."); |
| hadTrouble = true; |
| continue; |
| } |
| |
| ContentProviderClient client = null; |
| try { |
| if (DEBUG) Log.d(TAG, "Deleting: " + doc.displayName); |
| client = DocumentsApplication.acquireUnstableProviderOrThrow( |
| mResolver, doc.derivedUri.getAuthority()); |
| DocumentsContract.deleteDocument(client, doc.derivedUri); |
| } catch (Exception e) { |
| Log.w(TAG, "Failed to delete " + doc); |
| hadTrouble = true; |
| } finally { |
| ContentProviderClient.releaseQuietly(client); |
| } |
| } |
| |
| if (hadTrouble) { |
| // TODO show which files failed? b/23720103 |
| mListener.onError(); |
| if (DEBUG) Log.d(TAG, "Deletion task completed. Some deletions failed."); |
| } else { |
| if (DEBUG) Log.d(TAG, "Deletion task completed successfully."); |
| } |
| resetDeleteData(); |
| |
| mListener.onCompletion(); |
| } |
| } |
| |
| static class DeletionListener { |
| /** |
| * Called when deletion has completed (regardless of whether an error occurred). |
| */ |
| void onCompletion() {} |
| |
| /** |
| * Called at the end of a deletion operation that produced one or more errors. |
| */ |
| void onError() {} |
| } |
| |
| void addUpdateListener(UpdateListener listener) { |
| checkState(mUpdateListener == null); |
| mUpdateListener = listener; |
| } |
| |
| static class UpdateListener { |
| /** |
| * Called when a successful update has occurred. |
| */ |
| void onModelUpdate(Model model) {} |
| |
| /** |
| * Called when an update has been attempted but failed. |
| */ |
| void onModelUpdateFailed(Exception e) {} |
| } |
| } |
| |
| private class ItemClickListener implements ClickListener { |
| @Override |
| public void onClick(DocumentHolder doc) { |
| final int position = doc.getAdapterPosition(); |
| if (mSelectionManager.hasSelection()) { |
| mSelectionManager.toggleSelection(position); |
| } else { |
| handleViewItem(position); |
| } |
| } |
| } |
| |
| private class ModelUpdateListener extends Model.UpdateListener { |
| @Override |
| public void onModelUpdate(Model model) { |
| if (model.info != null || model.error != null) { |
| mMessageBar.setInfo(model.info); |
| mMessageBar.setError(model.error); |
| mMessageBar.show(); |
| } |
| |
| mProgressBar.setVisibility(model.isLoading() ? View.VISIBLE : View.GONE); |
| |
| if (model.isEmpty()) { |
| showEmptyView(); |
| } else { |
| showRecyclerView(); |
| mAdapter.notifyDataSetChanged(); |
| } |
| } |
| |
| @Override |
| public void onModelUpdateFailed(Exception e) { |
| showErrorView(); |
| } |
| } |
| } |
