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Diffstat (limited to 'src/com/android/gallery3d/ui/SelectionManager.java')
-rw-r--r--src/com/android/gallery3d/ui/SelectionManager.java251
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;
- }
-}
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