diff options
Diffstat (limited to 'src/com/android/gallery3d/filtershow/data/FilterStackSource.java')
| -rw-r--r-- | src/com/android/gallery3d/filtershow/data/FilterStackSource.java | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/filtershow/data/FilterStackSource.java b/src/com/android/gallery3d/filtershow/data/FilterStackSource.java new file mode 100644 index 000000000..d283771b4 --- /dev/null +++ b/src/com/android/gallery3d/filtershow/data/FilterStackSource.java @@ -0,0 +1,197 @@ +/* + * 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.gallery3d.filtershow.data; + +import android.content.ContentValues; +import android.content.Context; +import android.database.Cursor; +import android.database.sqlite.SQLiteDatabase; +import android.database.sqlite.SQLiteException; +import android.util.Log; +import android.util.Pair; + +import com.android.gallery3d.filtershow.data.FilterStackDBHelper.FilterStack; +import com.android.gallery3d.filtershow.filters.FilterUserPresetRepresentation; +import com.android.gallery3d.filtershow.pipeline.ImagePreset; + +import java.util.ArrayList; +import java.util.List; + +public class FilterStackSource { + private static final String LOGTAG = "FilterStackSource"; + + private SQLiteDatabase database = null; + private final FilterStackDBHelper dbHelper; + + public FilterStackSource(Context context) { + dbHelper = new FilterStackDBHelper(context); + } + + public void open() { + try { + database = dbHelper.getWritableDatabase(); + } catch (SQLiteException e) { + Log.w(LOGTAG, "could not open database", e); + } + } + + public void close() { + database = null; + dbHelper.close(); + } + + public boolean insertStack(String stackName, byte[] stackBlob) { + boolean ret = true; + ContentValues val = new ContentValues(); + val.put(FilterStack.STACK_ID, stackName); + val.put(FilterStack.FILTER_STACK, stackBlob); + database.beginTransaction(); + try { + ret = (-1 != database.insert(FilterStack.TABLE, null, val)); + database.setTransactionSuccessful(); + } finally { + database.endTransaction(); + } + return ret; + } + + public void updateStackName(int id, String stackName) { + ContentValues val = new ContentValues(); + val.put(FilterStack.STACK_ID, stackName); + database.beginTransaction(); + try { + database.update(FilterStack.TABLE, val, FilterStack._ID + " = ?", + new String[] { "" + id}); + database.setTransactionSuccessful(); + } finally { + database.endTransaction(); + } + } + + public boolean removeStack(int id) { + boolean ret = true; + database.beginTransaction(); + try { + ret = (0 != database.delete(FilterStack.TABLE, FilterStack._ID + " = ?", + new String[] { "" + id })); + database.setTransactionSuccessful(); + } finally { + database.endTransaction(); + } + return ret; + } + + public void removeAllStacks() { + database.beginTransaction(); + try { + database.delete(FilterStack.TABLE, null, null); + database.setTransactionSuccessful(); + } finally { + database.endTransaction(); + } + } + + public byte[] getStack(String stackName) { + byte[] ret = null; + Cursor c = null; + database.beginTransaction(); + try { + c = database.query(FilterStack.TABLE, + new String[] { FilterStack.FILTER_STACK }, + FilterStack.STACK_ID + " = ?", + new String[] { stackName }, null, null, null, null); + if (c != null && c.moveToFirst() && !c.isNull(0)) { + ret = c.getBlob(0); + } + database.setTransactionSuccessful(); + } finally { + if (c != null) { + c.close(); + } + database.endTransaction(); + } + return ret; + } + + public ArrayList<FilterUserPresetRepresentation> getAllUserPresets() { + ArrayList<FilterUserPresetRepresentation> ret = + new ArrayList<FilterUserPresetRepresentation>(); + + Cursor c = null; + database.beginTransaction(); + try { + c = database.query(FilterStack.TABLE, + new String[] { FilterStack._ID, + FilterStack.STACK_ID, + FilterStack.FILTER_STACK }, + null, null, null, null, null, null); + if (c != null) { + boolean loopCheck = c.moveToFirst(); + while (loopCheck) { + int id = c.getInt(0); + String name = (c.isNull(1)) ? null : c.getString(1); + byte[] b = (c.isNull(2)) ? null : c.getBlob(2); + String json = new String(b); + + ImagePreset preset = new ImagePreset(); + preset.readJsonFromString(json); + FilterUserPresetRepresentation representation = + new FilterUserPresetRepresentation(name, preset, id); + ret.add(representation); + loopCheck = c.moveToNext(); + } + } + database.setTransactionSuccessful(); + } finally { + if (c != null) { + c.close(); + } + database.endTransaction(); + } + + return ret; + } + + public List<Pair<String, byte[]>> getAllStacks() { + List<Pair<String, byte[]>> ret = new ArrayList<Pair<String, byte[]>>(); + Cursor c = null; + database.beginTransaction(); + try { + c = database.query(FilterStack.TABLE, + new String[] { FilterStack.STACK_ID, FilterStack.FILTER_STACK }, + null, null, null, null, null, null); + if (c != null) { + boolean loopCheck = c.moveToFirst(); + while (loopCheck) { + String name = (c.isNull(0)) ? null : c.getString(0); + byte[] b = (c.isNull(1)) ? null : c.getBlob(1); + ret.add(new Pair<String, byte[]>(name, b)); + loopCheck = c.moveToNext(); + } + } + database.setTransactionSuccessful(); + } finally { + if (c != null) { + c.close(); + } + database.endTransaction(); + } + if (ret.size() <= 0) { + return null; + } + return ret; + } +} |