diff options
Diffstat (limited to 'src/com/android/gallery3d/ui/SelectionManager.java')
-rw-r--r-- | src/com/android/gallery3d/ui/SelectionManager.java | 251 |
1 files changed, 0 insertions, 251 deletions
diff --git a/src/com/android/gallery3d/ui/SelectionManager.java b/src/com/android/gallery3d/ui/SelectionManager.java deleted file mode 100644 index be6811bc1..000000000 --- a/src/com/android/gallery3d/ui/SelectionManager.java +++ /dev/null @@ -1,251 +0,0 @@ -/* - * Copyright (C) 2010 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.gallery3d.ui; - -import com.android.gallery3d.app.AbstractGalleryActivity; -import com.android.gallery3d.data.DataManager; -import com.android.gallery3d.data.MediaItem; -import com.android.gallery3d.data.MediaSet; -import com.android.gallery3d.data.Path; - -import java.util.ArrayList; -import java.util.HashSet; -import java.util.Set; - -public class SelectionManager { - @SuppressWarnings("unused") - private static final String TAG = "SelectionManager"; - - public static final int ENTER_SELECTION_MODE = 1; - public static final int LEAVE_SELECTION_MODE = 2; - public static final int SELECT_ALL_MODE = 3; - - private Set<Path> mClickedSet; - private MediaSet mSourceMediaSet; - private SelectionListener mListener; - private DataManager mDataManager; - private boolean mInverseSelection; - private boolean mIsAlbumSet; - private boolean mInSelectionMode; - private boolean mAutoLeave = true; - private int mTotal; - - public interface SelectionListener { - public void onSelectionModeChange(int mode); - public void onSelectionChange(Path path, boolean selected); - } - - public SelectionManager(AbstractGalleryActivity activity, boolean isAlbumSet) { - mDataManager = activity.getDataManager(); - mClickedSet = new HashSet<Path>(); - mIsAlbumSet = isAlbumSet; - mTotal = -1; - } - - // Whether we will leave selection mode automatically once the number of - // selected items is down to zero. - public void setAutoLeaveSelectionMode(boolean enable) { - mAutoLeave = enable; - } - - public void setSelectionListener(SelectionListener listener) { - mListener = listener; - } - - public void selectAll() { - mInverseSelection = true; - mClickedSet.clear(); - enterSelectionMode(); - if (mListener != null) mListener.onSelectionModeChange(SELECT_ALL_MODE); - } - - public void deSelectAll() { - leaveSelectionMode(); - mInverseSelection = false; - mClickedSet.clear(); - } - - public boolean inSelectAllMode() { - return mInverseSelection; - } - - public boolean inSelectionMode() { - return mInSelectionMode; - } - - public void enterSelectionMode() { - if (mInSelectionMode) return; - - mInSelectionMode = true; - if (mListener != null) mListener.onSelectionModeChange(ENTER_SELECTION_MODE); - } - - public void leaveSelectionMode() { - if (!mInSelectionMode) return; - - mInSelectionMode = false; - mInverseSelection = false; - mClickedSet.clear(); - if (mListener != null) mListener.onSelectionModeChange(LEAVE_SELECTION_MODE); - } - - public boolean isItemSelected(Path itemId) { - return mInverseSelection ^ mClickedSet.contains(itemId); - } - - private int getTotalCount() { - if (mSourceMediaSet == null) return -1; - - if (mTotal < 0) { - mTotal = mIsAlbumSet - ? mSourceMediaSet.getSubMediaSetCount() - : mSourceMediaSet.getMediaItemCount(); - } - return mTotal; - } - - public int getSelectedCount() { - int count = mClickedSet.size(); - if (mInverseSelection) { - count = getTotalCount() - count; - } - return count; - } - - public void toggle(Path path) { - if (mClickedSet.contains(path)) { - mClickedSet.remove(path); - } else { - enterSelectionMode(); - mClickedSet.add(path); - } - - // Convert to inverse selection mode if everything is selected. - int count = getSelectedCount(); - if (count == getTotalCount()) { - selectAll(); - } - - if (mListener != null) mListener.onSelectionChange(path, isItemSelected(path)); - if (count == 0 && mAutoLeave) { - leaveSelectionMode(); - } - } - - private static boolean expandMediaSet(ArrayList<Path> items, MediaSet set, int maxSelection) { - int subCount = set.getSubMediaSetCount(); - for (int i = 0; i < subCount; i++) { - if (!expandMediaSet(items, set.getSubMediaSet(i), maxSelection)) { - return false; - } - } - int total = set.getMediaItemCount(); - int batch = 50; - int index = 0; - - while (index < total) { - int count = index + batch < total - ? batch - : total - index; - ArrayList<MediaItem> list = set.getMediaItem(index, count); - if (list != null - && list.size() > (maxSelection - items.size())) { - return false; - } - for (MediaItem item : list) { - items.add(item.getPath()); - } - index += batch; - } - return true; - } - - public ArrayList<Path> getSelected(boolean expandSet) { - return getSelected(expandSet, Integer.MAX_VALUE); - } - - public ArrayList<Path> getSelected(boolean expandSet, int maxSelection) { - ArrayList<Path> selected = new ArrayList<Path>(); - if (mIsAlbumSet) { - if (mInverseSelection) { - int total = getTotalCount(); - for (int i = 0; i < total; i++) { - MediaSet set = mSourceMediaSet.getSubMediaSet(i); - Path id = set.getPath(); - if (!mClickedSet.contains(id)) { - if (expandSet) { - if (!expandMediaSet(selected, set, maxSelection)) { - return null; - } - } else { - selected.add(id); - if (selected.size() > maxSelection) { - return null; - } - } - } - } - } else { - for (Path id : mClickedSet) { - if (expandSet) { - if (!expandMediaSet(selected, mDataManager.getMediaSet(id), - maxSelection)) { - return null; - } - } else { - selected.add(id); - if (selected.size() > maxSelection) { - return null; - } - } - } - } - } else { - if (mInverseSelection) { - int total = getTotalCount(); - int index = 0; - while (index < total) { - int count = Math.min(total - index, MediaSet.MEDIAITEM_BATCH_FETCH_COUNT); - ArrayList<MediaItem> list = mSourceMediaSet.getMediaItem(index, count); - for (MediaItem item : list) { - Path id = item.getPath(); - if (!mClickedSet.contains(id)) { - selected.add(id); - if (selected.size() > maxSelection) { - return null; - } - } - } - index += count; - } - } else { - for (Path id : mClickedSet) { - selected.add(id); - if (selected.size() > maxSelection) { - return null; - } - } - } - } - return selected; - } - - public void setSourceMediaSet(MediaSet set) { - mSourceMediaSet = set; - mTotal = -1; - } -} |