| /* |
| * Copyright (C) 2009 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 android.gesture; |
| |
| import android.util.Log; |
| import static android.gesture.GestureConstants.*; |
| import android.content.Context; |
| |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.io.FileInputStream; |
| import java.io.InputStream; |
| import java.lang.ref.WeakReference; |
| |
| public final class GestureLibraries { |
| private GestureLibraries() { |
| } |
| |
| public static GestureLibrary fromFile(String path) { |
| return fromFile(new File(path)); |
| } |
| |
| public static GestureLibrary fromFile(File path) { |
| return new FileGestureLibrary(path); |
| } |
| |
| public static GestureLibrary fromPrivateFile(Context context, String name) { |
| return fromFile(context.getFileStreamPath(name)); |
| } |
| |
| public static GestureLibrary fromRawResource(Context context, int resourceId) { |
| return new ResourceGestureLibrary(context, resourceId); |
| } |
| |
| private static class FileGestureLibrary extends GestureLibrary { |
| private final File mPath; |
| |
| public FileGestureLibrary(File path) { |
| mPath = path; |
| } |
| |
| @Override |
| public boolean isReadOnly() { |
| return !mPath.canWrite(); |
| } |
| |
| public boolean save() { |
| if (!mStore.hasChanged()) return true; |
| |
| final File file = mPath; |
| |
| final File parentFile = file.getParentFile(); |
| if (!parentFile.exists()) { |
| if (!parentFile.mkdirs()) { |
| return false; |
| } |
| } |
| |
| boolean result = false; |
| try { |
| //noinspection ResultOfMethodCallIgnored |
| file.createNewFile(); |
| mStore.save(new FileOutputStream(file), true); |
| result = true; |
| } catch (FileNotFoundException e) { |
| Log.d(LOG_TAG, "Could not save the gesture library in " + mPath, e); |
| } catch (IOException e) { |
| Log.d(LOG_TAG, "Could not save the gesture library in " + mPath, e); |
| } |
| |
| return result; |
| } |
| |
| public boolean load() { |
| boolean result = false; |
| final File file = mPath; |
| if (file.exists() && file.canRead()) { |
| try { |
| mStore.load(new FileInputStream(file), true); |
| result = true; |
| } catch (FileNotFoundException e) { |
| Log.d(LOG_TAG, "Could not load the gesture library from " + mPath, e); |
| } catch (IOException e) { |
| Log.d(LOG_TAG, "Could not load the gesture library from " + mPath, e); |
| } |
| } |
| |
| return result; |
| } |
| } |
| |
| private static class ResourceGestureLibrary extends GestureLibrary { |
| private final WeakReference<Context> mContext; |
| private final int mResourceId; |
| |
| public ResourceGestureLibrary(Context context, int resourceId) { |
| mContext = new WeakReference<Context>(context); |
| mResourceId = resourceId; |
| } |
| |
| @Override |
| public boolean isReadOnly() { |
| return true; |
| } |
| |
| public boolean save() { |
| return false; |
| } |
| |
| public boolean load() { |
| boolean result = false; |
| final Context context = mContext.get(); |
| if (context != null) { |
| final InputStream in = context.getResources().openRawResource(mResourceId); |
| try { |
| mStore.load(in, true); |
| result = true; |
| } catch (IOException e) { |
| Log.d(LOG_TAG, "Could not load the gesture library from raw resource " + |
| context.getResources().getResourceName(mResourceId), e); |
| } |
| } |
| |
| return result; |
| } |
| } |
| } |