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/*
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* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package net.micode.notes.gtask.data;
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import android.database.Cursor;
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import android.util.Log;
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import net.micode.notes.data.Notes;
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import net.micode.notes.data.Notes.NoteColumns;
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import net.micode.notes.gtask.exception.ActionFailureException;
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import net.micode.notes.tool.GTaskStringUtils;
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import org.json.JSONException;
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import org.json.JSONObject;
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import java.util.ArrayList;
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public class TaskList extends Node {
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private static final String TAG = TaskList.class.getSimpleName();//tag标记
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private int mIndex;//当前TaskList的指针
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private ArrayList<Task> mChildren;//类中主要的保存数据的单元，用来实现一个以Task为元素的ArrayList
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public TaskList() {
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super();
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mChildren = new ArrayList<Task>();
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mIndex = 1;
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}
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/**生成并返回一个包含了一定数据的JSONObject实体 */
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public JSONObject getCreateAction(int actionId) {
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JSONObject js = new JSONObject();
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try {
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// action_type
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js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
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GTaskStringUtils.GTASK_JSON_ACTION_TYPE_CREATE);
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// action_id
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js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);
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// index
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js.put(GTaskStringUtils.GTASK_JSON_INDEX, mIndex);
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// entity_delta
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JSONObject entity = new JSONObject();//entity实体
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entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
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entity.put(GTaskStringUtils.GTASK_JSON_CREATOR_ID, "null");
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entity.put(GTaskStringUtils.GTASK_JSON_ENTITY_TYPE,
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GTaskStringUtils.GTASK_JSON_TYPE_GROUP);
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js.put(GTaskStringUtils.GTASK_JSON_ENTITY_DELTA, entity);
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} catch (JSONException e) {
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Log.e(TAG, e.toString());
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e.printStackTrace();
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throw new ActionFailureException("fail to generate tasklist-create jsonobject");
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}
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return js;
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}
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/**生成并返回一个包含了一定数据的JSONObject实体 */
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public JSONObject getUpdateAction(int actionId) {
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JSONObject js = new JSONObject();
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try {
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// action_type
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js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
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GTaskStringUtils.GTASK_JSON_ACTION_TYPE_UPDATE);
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// action_id
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js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);
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// id
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js.put(GTaskStringUtils.GTASK_JSON_ID, getGid());
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// entity_delta
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JSONObject entity = new JSONObject();
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entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
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entity.put(GTaskStringUtils.GTASK_JSON_DELETED, getDeleted());
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js.put(GTaskStringUtils.GTASK_JSON_ENTITY_DELTA, entity);
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} catch (JSONException e) {
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Log.e(TAG, e.toString());
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e.printStackTrace();
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throw new ActionFailureException("fail to generate tasklist-update jsonobject");
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}
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return js;
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}
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public void setContentByRemoteJSON(JSONObject js) {
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if (js != null) {
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try {
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// id
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if (js.has(GTaskStringUtils.GTASK_JSON_ID)) {
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setGid(js.getString(GTaskStringUtils.GTASK_JSON_ID));
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}
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// last_modified
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if (js.has(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED)) {
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setLastModified(js.getLong(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED));
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}
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// name
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if (js.has(GTaskStringUtils.GTASK_JSON_NAME)) {
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setName(js.getString(GTaskStringUtils.GTASK_JSON_NAME));
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}
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} catch (JSONException e) {
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Log.e(TAG, e.toString());
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e.printStackTrace();
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throw new ActionFailureException("fail to get tasklist content from jsonobject");
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}
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}
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}
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public void setContentByLocalJSON(JSONObject js) {
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if (js == null || !js.has(GTaskStringUtils.META_HEAD_NOTE)) {
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Log.w(TAG, "setContentByLocalJSON: nothing is avaiable");
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}
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try {
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JSONObject folder = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
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if (folder.getInt(NoteColumns.TYPE) == Notes.TYPE_FOLDER) {
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String name = folder.getString(NoteColumns.SNIPPET);
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setName(GTaskStringUtils.MIUI_FOLDER_PREFFIX + name);
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} else if (folder.getInt(NoteColumns.TYPE) == Notes.TYPE_SYSTEM) {
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if (folder.getLong(NoteColumns.ID) == Notes.ID_ROOT_FOLDER)
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setName(GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_DEFAULT);
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else if (folder.getLong(NoteColumns.ID) == Notes.ID_CALL_RECORD_FOLDER)
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setName(GTaskStringUtils.MIUI_FOLDER_PREFFIX
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+ GTaskStringUtils.FOLDER_CALL_NOTE);
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else
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Log.e(TAG, "invalid system folder");
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} else {
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Log.e(TAG, "error type");
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}
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} catch (JSONException e) {
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Log.e(TAG, e.toString());
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e.printStackTrace();
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}
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}
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public JSONObject getLocalJSONFromContent() {
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try {
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JSONObject js = new JSONObject();
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JSONObject folder = new JSONObject();
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String folderName = getName();
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if (getName().startsWith(GTaskStringUtils.MIUI_FOLDER_PREFFIX))
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folderName = folderName.substring(GTaskStringUtils.MIUI_FOLDER_PREFFIX.length(),
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folderName.length());
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folder.put(NoteColumns.SNIPPET, folderName);
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if (folderName.equals(GTaskStringUtils.FOLDER_DEFAULT)
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|| folderName.equals(GTaskStringUtils.FOLDER_CALL_NOTE))
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folder.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
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else
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folder.put(NoteColumns.TYPE, Notes.TYPE_FOLDER);
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js.put(GTaskStringUtils.META_HEAD_NOTE, folder);
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return js;
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} catch (JSONException e) {
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Log.e(TAG, e.toString());
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e.printStackTrace();
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return null;
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}
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}
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public int getSyncAction(Cursor c) {
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try {
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if (c.getInt(SqlNote.LOCAL_MODIFIED_COLUMN) == 0) {
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// there is no local update
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if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
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// no update both side
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return SYNC_ACTION_NONE;
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} else {
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// apply remote to local
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return SYNC_ACTION_UPDATE_LOCAL;
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}
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} else {
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// validate gtask id
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if (!c.getString(SqlNote.GTASK_ID_COLUMN).equals(getGid())) {
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Log.e(TAG, "gtask id doesn't match");
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return SYNC_ACTION_ERROR;
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}
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if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
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// local modification only
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return SYNC_ACTION_UPDATE_REMOTE;
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} else {
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// for folder conflicts, just apply local modification
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return SYNC_ACTION_UPDATE_REMOTE;
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}
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}
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} catch (Exception e) {
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Log.e(TAG, e.toString());
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e.printStackTrace();
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}
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return SYNC_ACTION_ERROR;
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}
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/**获得TaskList的大小，即mChildren的大小 */
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public int getChildTaskCount() {
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return mChildren.size();
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}
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/**返回值为是否成功添加任务
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* 实现功能：在当前任务表末尾添加新的任务
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*/
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public boolean addChildTask(Task task) {
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boolean ret = false;
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if (task != null && !mChildren.contains(task)) {
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ret = mChildren.add(task);
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if (ret) {
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// need to set prior sibling and parent
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task.setPriorSibling(mChildren.isEmpty() ? null : mChildren
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.get(mChildren.size() - 1));
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task.setParent(this);
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//注意：每一次ArrayList的变化都要紧跟相关Task中的PriorSibling的更改，接下来几个函数都有相关操作
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}
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}
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return ret;
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}
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/**在当前任务表的指定位置添加新的任务 */
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public boolean addChildTask(Task task, int index) {
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if (index < 0 || index > mChildren.size()) {
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Log.e(TAG, "add child task: invalid index");
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return false;
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}
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int pos = mChildren.indexOf(task);
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if (task != null && pos == -1) {
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mChildren.add(index, task);
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// update the task list
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Task preTask = null;
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Task afterTask = null;
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if (index != 0)
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preTask = mChildren.get(index - 1);
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if (index != mChildren.size() - 1)
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afterTask = mChildren.get(index + 1);
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task.setPriorSibling(preTask);
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if (afterTask != null)
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afterTask.setPriorSibling(task);
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}
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return true;
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}
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/**返回删除是否成功，删除TaskList中的一个Task */
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public boolean removeChildTask(Task task) {
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boolean ret = false;
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int index = mChildren.indexOf(task);
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if (index != -1) {
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ret = mChildren.remove(task);
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if (ret) {
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// reset prior sibling and parent
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task.setPriorSibling(null);
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task.setParent(null);
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// update the task list
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if (index != mChildren.size()) {
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mChildren.get(index).setPriorSibling(
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index == 0 ? null : mChildren.get(index - 1));
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}
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}
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}
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return ret;
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}
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/**将当前TaskList中含有的某个Task移到index位置 */
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public boolean moveChildTask(Task task, int index) {
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if (index < 0 || index >= mChildren.size()) {
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Log.e(TAG, "move child task: invalid index");
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return false;
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}
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int pos = mChildren.indexOf(task);
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if (pos == -1) {
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Log.e(TAG, "move child task: the task should in the list");
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return false;
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}
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if (pos == index)
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return true;
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return (removeChildTask(task) && addChildTask(task, index));
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//利用已实现好的功能完成当下功能
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}
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/**返回寻找结果，按照gid寻找Task */
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public Task findChildTaskByGid(String gid) {
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for (int i = 0; i < mChildren.size(); i++) {
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Task t = mChildren.get(i);
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if (t.getGid().equals(gid)) {
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return t;
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}
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}
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return null;
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}
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/**返回指定Task的index */
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public int getChildTaskIndex(Task task) {
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return mChildren.indexOf(task);
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}
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/**返回指定index的Task */
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public Task getChildTaskByIndex(int index) {
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if (index < 0 || index >= mChildren.size()) {
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Log.e(TAG, "getTaskByIndex: invalid index");
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return null;
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}
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return mChildren.get(index);
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}
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/**返回指定gid的Task */
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public Task getChilTaskByGid(String gid) {
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for (Task task : mChildren) {//一种常见的ArrayList的遍历方法
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if (task.getGid().equals(gid))
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return task;
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}
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return null;
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}
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public ArrayList<Task> getChildTaskList() {
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return this.mChildren;
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}
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public void setIndex(int index) {
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this.mIndex = index;
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}
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public int getIndex() {
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return this.mIndex;
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}
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}
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