From 1a68f001ec999d87dd897e60276941b2d50450a5 Mon Sep 17 00:00:00 2001 From: "1404563774@qq.com" <1404563774@qq.com> Date: Tue, 6 Jun 2023 14:38:33 +0800 Subject: [PATCH] remote all Signed-off-by: 1404563774@qq.com <1404563774@qq.com> --- remote2 | 633 ++++++++++++++++++++++++++++++++++++++++- remote3 | 867 +++++++++++++++++++++++++++++++++++++++++++++++++++++++- remote4 | 145 +++++++++- 3 files changed, 1642 insertions(+), 3 deletions(-) diff --git a/remote2 b/remote2 index 66dc905..ec26224 100644 --- a/remote2 +++ b/remote2 @@ -1 +1,632 @@ -undefined \ No newline at end of file +/* + * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) + * + * 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 net.micode.notes.gtask.remote; +import android.app.Activity; +import android.app.Service; +import android.content.Context; +import android.content.Intent; +import android.os.Bundle; +import android.os.IBinder; +/* + * 主要功能：实现GTASK的登录操作，进行GTASK任务的创建，创建任务列表，从网络上获取任务和任务列表的内容 + * 主要使用类或技术：accountManager JSONObject HttpParams authToken Gid + */ +public class GTaskClient { + private static final String TAG = GTaskClient.class.getSimpleName(); + + private static final String GTASK_URL = "https://mail.google.com/tasks/"; //这个是指定的URL + + private static final String GTASK_GET_URL = "https://mail.google.com/tasks/ig"; + + private static final String GTASK_POST_URL = "https://mail.google.com/tasks/r/ig"; + + private static GTaskClient mInstance = null; + + private DefaultHttpClient mHttpClient; + + private String mGetUrl; + + private String mPostUrl; + + private long mClientVersion; + + private boolean mLoggedin; + + private long mLastLoginTime; + + private int mActionId; + + private Account mAccount; + + private JSONArray mUpdateArray; + + private GTaskClient() { + mHttpClient = null; + mGetUrl = GTASK_GET_URL; + mPostUrl = GTASK_POST_URL; + mClientVersion = -1; + mLoggedin = false; + mLastLoginTime = 0; + mActionId = 1; + mAccount = null; + mUpdateArray = null; + } + + /*用来获取的实例化对象 + * 使用 getInstance() + * 返回mInstance这个实例化对象 + */ + public static synchronized GTaskClient getInstance() { + if (mInstance == null) { + mInstance = new GTaskClient(); + } + return mInstance; + } + + /*用来实现登录操作的函数，传入的参数是一个Activity + * 设置登录操作限制时间，如果超时则需要重新登录 + * 有两种登录方式，使用用户自己的URL登录或者使用谷歌官方的URL登录 + * 返回true或者false，即最后是否登陆成功 + */ + public boolean login(Activity activity) { + // we suppose that the cookie would expire after 5 minutes + // then we need to re-login + //判断距离最后一次登录操作是否超过5分钟 + final long interval = 1000 * 60 * 5; + if (mLastLoginTime + interval < System.currentTimeMillis()) { + mLoggedin = false; + } + + // need to re-login after account switch 重新登录操作 + if (mLoggedin + && !TextUtils.equals(getSyncAccount().name, NotesPreferenceActivity + .getSyncAccountName(activity))) { + mLoggedin = false; + } + + //如果没超过时间，则不需要重新登录 + if (mLoggedin) { + Log.d(TAG, "already logged in"); + return true; + } + + mLastLoginTime = System.currentTimeMillis();//更新最后登录时间，改为系统当前的时间 + String authToken = loginGoogleAccount(activity, false);//判断是否登录到谷歌账户 + if (authToken == null) { + Log.e(TAG, "login google account failed"); + return false; + } + + // login with custom domain if necessary + //尝试使用用户自己的域名登录 + if (!(mAccount.name.toLowerCase().endsWith("gmail.com") || mAccount.name.toLowerCase() //将用户账号名改为统一格式（小写）后判断是否为一个谷歌账号地址 + .endsWith("googlemail.com"))) { + StringBuilder url = new StringBuilder(GTASK_URL).append("a/"); + int index = mAccount.name.indexOf('@') + 1; + String suffix = mAccount.name.substring(index); + url.append(suffix + "/"); + mGetUrl = url.toString() + "ig"; //设置用户对应的getUrl + mPostUrl = url.toString() + "r/ig"; //设置用户对应的postUrl + + if (tryToLoginGtask(activity, authToken)) { + mLoggedin = true; + } + } + + // try to login with google official url + //如果用户账户无法登录，则使用谷歌官方的URI进行登录 + if (!mLoggedin) { + mGetUrl = GTASK_GET_URL; + mPostUrl = GTASK_POST_URL; + if (!tryToLoginGtask(activity, authToken)) { + return false; + } + } + + mLoggedin = true; + return true; + } + + /*具体实现登录谷歌账户的方法 + * 使用令牌机制 + * 使用AccountManager来管理注册账号 + * 返回值是账号的令牌 + */ + private String loginGoogleAccount(Activity activity, boolean invalidateToken) { + String authToken; //令牌，是登录操作保证安全性的一个方法 + AccountManager accountManager = AccountManager.get(activity);//AccountManager这个类给用户提供了集中注册账号的接口 + Account[] accounts = accountManager.getAccountsByType("com.google");//获取全部以com.google结尾的account + + if (accounts.length == 0) { + Log.e(TAG, "there is no available google account"); + return null; + } + + String accountName = NotesPreferenceActivity.getSyncAccountName(activity); + Account account = null; + //遍历获得的accounts信息，寻找已经记录过的账户信息 + for (Account a : accounts) { + if (a.name.equals(accountName)) { + account = a; + break; + } + } + if (account != null) { + mAccount = account; + } else { + Log.e(TAG, "unable to get an account with the same name in the settings"); + return null; + } + + // get the token now + //获取选中账号的令牌 + AccountManagerFuture accountManagerFuture = accountManager.getAuthToken(account, + "goanna_mobile", null, activity, null, null); + try { + Bundle authTokenBundle = accountManagerFuture.getResult(); + authToken = authTokenBundle.getString(AccountManager.KEY_AUTHTOKEN); + //如果是invalidateToken，那么需要调用invalidateAuthToken(String, String)方法废除这个无效token + if (invalidateToken) { + accountManager.invalidateAuthToken("com.google", authToken); + loginGoogleAccount(activity, false); + } + } catch (Exception e) { + Log.e(TAG, "get auth token failed"); + authToken = null; + } + + return authToken; + } + + //尝试登陆Gtask，这只是一个预先判断令牌是否是有效以及是否能登上GTask的方法,而不是具体实现登陆的方法 + private boolean tryToLoginGtask(Activity activity, String authToken) { + if (!loginGtask(authToken)) { + // maybe the auth token is out of authTokedate, now let's invalidate the + // token and try again + //删除过一个无效的authToken，申请一个新的后再次尝试登陆 + authToken = loginGoogleAccount(activity, true); + if (authToken == null) { + Log.e(TAG, "login google account failed"); + return false; + } + + if (!loginGtask(authToken)) { + Log.e(TAG, "login gtask failed"); + return false; + } + } + return true; + } + + //实现登录GTask的具体操作 + private boolean loginGtask(String authToken) { + int timeoutConnection = 10000; + int timeoutSocket = 15000; //socket是一种通信连接实现数据的交换的端口 + HttpParams httpParameters = new BasicHttpParams(); //实例化一个新的HTTP参数类 + HttpConnectionParams.setConnectionTimeout(httpParameters, timeoutConnection);//设置连接超时时间 + HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket);//设置设置端口超时时间 + mHttpClient = new DefaultHttpClient(httpParameters); + BasicCookieStore localBasicCookieStore = new BasicCookieStore(); //设置本地cookie + mHttpClient.setCookieStore(localBasicCookieStore); + HttpProtocolParams.setUseExpectContinue(mHttpClient.getParams(), false); + + // login gtask + try { + String loginUrl = mGetUrl + "?auth=" + authToken; //设置登录的url + HttpGet httpGet = new HttpGet(loginUrl); //通过登录的uri实例化网页上资源的查找 + HttpResponse response = null; + response = mHttpClient.execute(httpGet); + + // get the cookie now + //获取CookieStore里存放的cookie,看如果存有“GTL(不知道什么意思)”，则说明有验证成功的有效的cookie + List cookies = mHttpClient.getCookieStore().getCookies(); + boolean hasAuthCookie = false; + for (Cookie cookie : cookies) { + if (cookie.getName().contains("GTL")) { + hasAuthCookie = true; + } + } + if (!hasAuthCookie) { + Log.w(TAG, "it seems that there is no auth cookie"); + } + + // get the client version + //获取client的内容，具体操作是在返回的Content中截取从_setup(开始到)}中间的字符串内容，也就是gtask_url的内容 + String resString = getResponseContent(response.getEntity()); + String jsBegin = "_setup("; + String jsEnd = ")}"; + int begin = resString.indexOf(jsBegin); + int end = resString.lastIndexOf(jsEnd); + String jsString = null; + if (begin != -1 && end != -1 && begin < end) { + jsString = resString.substring(begin + jsBegin.length(), end); + } + JSONObject js = new JSONObject(jsString); + mClientVersion = js.getLong("v"); + } catch (JSONException e) { + Log.e(TAG, e.toString()); + e.printStackTrace(); + return false; + } catch (Exception e) { + // simply catch all exceptions + Log.e(TAG, "httpget gtask_url failed"); + return false; + } + + return true; + } + + private int getActionId() { + return mActionId++; + } + + /*实例化创建一个用于向网络传输数据的对象 + * 使用HttpPost类 + * 返回一个httpPost实例化对象，但里面还没有内容 + */ + private HttpPost createHttpPost() { + HttpPost httpPost = new HttpPost(mPostUrl); + httpPost.setHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8"); + httpPost.setHeader("AT", "1"); + return httpPost; + } + + /*通过URL获取响应后返回的数据，也就是网络上的数据和资源 + * 使用getContentEncoding()获取网络上的资源和数据 + * 返回值就是获取到的资源 + */ + private String getResponseContent(HttpEntity entity) throws IOException { + String contentEncoding = null; + if (entity.getContentEncoding() != null) {//通过URL得到HttpEntity对象，如果不为空则使用getContent（）方法创建一个流将数据从网络都过来 + contentEncoding = entity.getContentEncoding().getValue(); + Log.d(TAG, "encoding: " + contentEncoding); + } + + InputStream input = entity.getContent(); + if (contentEncoding != null && contentEncoding.equalsIgnoreCase("gzip")) {//GZIP是使用DEFLATE进行压缩数据的另一个压缩库 + input = new GZIPInputStream(entity.getContent()); + } else if (contentEncoding != null && contentEncoding.equalsIgnoreCase("deflate")) {//DEFLATE是一个无专利的压缩算法，它可以实现无损数据压缩 + Inflater inflater = new Inflater(true); + input = new InflaterInputStream(entity.getContent(), inflater); + } + + try { + InputStreamReader isr = new InputStreamReader(input); + BufferedReader br = new BufferedReader(isr);//是一个包装类，它可以包装字符流，将字符流放入缓存里，先把字符读到缓存里，到缓存满了时候，再读入内存，是为了提供读的效率而设计的 + StringBuilder sb = new StringBuilder(); + + while (true) { + String buff = br.readLine(); + if (buff == null) { + return sb.toString(); + } + sb = sb.append(buff); + } + } finally { + input.close(); + } + } + + /*通过JSON发送请求 + * 请求的具体内容在json的实例化对象js中然后传入 + * 利用UrlEncodedFormEntity entity和httpPost.setEntity(entity)方法把js中的内容放置到httpPost中 + * 执行请求后使用getResponseContent方法得到返回的数据和资源 + * 将资源再次放入json后返回 + */ + private JSONObject postRequest(JSONObject js) throws NetworkFailureException { + if (!mLoggedin) {//未登录 + Log.e(TAG, "please login first"); + throw new ActionFailureException("not logged in"); + } + + //实例化一个httpPost的对象用来向服务器传输数据，在这里就是发送请求，而请求的内容在js里 + HttpPost httpPost = createHttpPost(); + try { + LinkedList list = new LinkedList(); + list.add(new BasicNameValuePair("r", js.toString())); + UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list, "UTF-8"); //UrlEncodedFormEntity()的形式比较单一，是普通的键值对 + httpPost.setEntity(entity); + + // execute the post + //执行这个请求 + HttpResponse response = mHttpClient.execute(httpPost); + String jsString = getResponseContent(response.getEntity()); + return new JSONObject(jsString); + + } catch (ClientProtocolException e) { + Log.e(TAG, e.toString()); + e.printStackTrace(); + throw new NetworkFailureException("postRequest failed"); + } catch (IOException e) { + Log.e(TAG, e.toString()); + e.printStackTrace(); + throw new NetworkFailureException("postRequest failed"); + } catch (JSONException e) { + Log.e(TAG, e.toString()); + e.printStackTrace(); + throw new ActionFailureException("unable to convert response content to jsonobject"); + } catch (Exception e) { + Log.e(TAG, e.toString()); + e.printStackTrace(); + throw new ActionFailureException("error occurs when posting request"); + } + } + + /*创建单个任务 + * 传入参数是一个.gtask.data.Task包里Task类的对象 + * 利用json获取Task里的内容,并且创建相应的jsPost + * 利用postRequest得到任务的返回信息 + * 使用task.setGid设置task的new_ID + */ + public void createTask(Task task) throws NetworkFailureException { + commitUpdate(); + try { + JSONObject jsPost = new JSONObject(); + JSONArray actionList = new JSONArray(); + + // action_list + actionList.put(task.getCreateAction(getActionId())); + jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList); + + // client_version + jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion); + + // post + JSONObject jsResponse = postRequest(jsPost); + JSONObject jsResult = (JSONObject) jsResponse.getJSONArray( + GTaskStringUtils.GTASK_JSON_RESULTS).get(0); + task.setGid(jsResult.getString(GTaskStringUtils.GTASK_JSON_NEW_ID)); + + } catch (JSONException e) { + Log.e(TAG, e.toString()); + e.printStackTrace(); + throw new ActionFailureException("create task: handing jsonobject failed"); + } + } + + /* + * 创建一个任务列表，与createTask几乎一样，区别就是最后设置的是tasklist的gid + */ + public void createTaskList(TaskList tasklist) throws NetworkFailureException { + commitUpdate(); + try { + JSONObject jsPost = new JSONObject(); + JSONArray actionList = new JSONArray(); + + // action_list + actionList.put(tasklist.getCreateAction(getActionId())); + jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList); + + // client version + jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion); + + // post + JSONObject jsResponse = postRequest(jsPost); + JSONObject jsResult = (JSONObject) jsResponse.getJSONArray( + GTaskStringUtils.GTASK_JSON_RESULTS).get(0); + tasklist.setGid(jsResult.getString(GTaskStringUtils.GTASK_JSON_NEW_ID)); + + } catch (JSONException e) { + Log.e(TAG, e.toString()); + e.printStackTrace(); + throw new ActionFailureException("create tasklist: handing jsonobject failed"); + } + } + + /* + * 同步更新操作 + * 使用JSONObject进行数据存储，使用jsPost.put，Put的信息包括UpdateArray和ClientVersion + * 使用postRequest发送这个jspost,进行处理 + */ + public void commitUpdate() throws NetworkFailureException { + if (mUpdateArray != null) { + try { + JSONObject jsPost = new JSONObject(); + + // action_list + jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, mUpdateArray); + + // client_version + jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion); + + postRequest(jsPost); + mUpdateArray = null; + } catch (JSONException e) { + Log.e(TAG, e.toString()); + e.printStackTrace(); + throw new ActionFailureException("commit update: handing jsonobject failed"); + } + } + } + + /* + * 添加更新的事项 + * 调用commitUpdate()实现 + */ + public void addUpdateNode(Node node) throws NetworkFailureException { + if (node != null) { + // too many update items may result in an error + // set max to 10 items + if (mUpdateArray != null && mUpdateArray.length() > 10) { + commitUpdate(); + } + + if (mUpdateArray == null) + mUpdateArray = new JSONArray(); + mUpdateArray.put(node.getUpdateAction(getActionId())); + } + } + + /* + * 移动task,比如讲task移动到不同的task列表中去 + * 通过getGid获取task所属列表的gid + * 通过JSONObject.put(String name, Object value)函数设置移动后的task的相关属性值，从而达到移动的目的 + * 最后还是通过postRequest进行更新后的发送 + */ + public void moveTask(Task task, TaskList preParent, TaskList curParent) + throws NetworkFailureException { + commitUpdate(); + try { + JSONObject jsPost = new JSONObject(); + JSONArray actionList = new JSONArray(); + JSONObject action = new JSONObject(); + + // action_list + action.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE, + GTaskStringUtils.GTASK_JSON_ACTION_TYPE_MOVE); + action.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, getActionId()); + action.put(GTaskStringUtils.GTASK_JSON_ID, task.getGid()); + if (preParent == curParent && task.getPriorSibling() != null) { + // put prioring_sibing_id only if moving within the tasklist and + // it is not the first one + //设置优先级ID，只有当移动是发生在文件中 + action.put(GTaskStringUtils.GTASK_JSON_PRIOR_SIBLING_ID, task.getPriorSibling()); + } + action.put(GTaskStringUtils.GTASK_JSON_SOURCE_LIST, preParent.getGid()); //设置移动前所属列表 + action.put(GTaskStringUtils.GTASK_JSON_DEST_PARENT, curParent.getGid()); //设置当前所属列表 + if (preParent != curParent) { + // put the dest_list only if moving between tasklists + action.put(GTaskStringUtils.GTASK_JSON_DEST_LIST, curParent.getGid()); + } + actionList.put(action); + //最后将ACTION_LIST加入到jsPost中 + jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList); + + // client_version + jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion); + + postRequest(jsPost); + + } catch (JSONException e) { + Log.e(TAG, e.toString()); + e.printStackTrace(); + throw new ActionFailureException("move task: handing jsonobject failed"); + } + } + + /* + * 删除操作节点 + * 还是利用JSON + * 删除过后使用postRequest发送删除后的结果 + */ + public void deleteNode(Node node) throws NetworkFailureException { + commitUpdate(); + try { + JSONObject jsPost = new JSONObject(); + JSONArray actionList = new JSONArray(); + + // action_list + node.setDeleted(true); + actionList.put(node.getUpdateAction(getActionId())); //这里会获取到删除操作的ID，加入到actionLiast中 + jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList); + + // client_version + jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion); + + postRequest(jsPost); + mUpdateArray = null; + } catch (JSONException e) { + Log.e(TAG, e.toString()); + e.printStackTrace(); + throw new ActionFailureException("delete node: handing jsonobject failed"); + } + } + + /* + * 获取任务列表 + * 首先通过GetURI使用getResponseContent从网上获取数据 + * 然后筛选出"_setup("到)}的部分，并且从中获取GTASK_JSON_LISTS的内容返回 + */ + public JSONArray getTaskLists() throws NetworkFailureException { + if (!mLoggedin) { + Log.e(TAG, "please login first"); + throw new ActionFailureException("not logged in"); + } + + try { + HttpGet httpGet = new HttpGet(mGetUrl); + HttpResponse response = null; + response = mHttpClient.execute(httpGet); + + // get the task list + //筛选工作，把筛选出的字符串放入jsString + String resString = getResponseContent(response.getEntity()); + String jsBegin = "_setup("; + String jsEnd = ")}"; + int begin = resString.indexOf(jsBegin); + int end = resString.lastIndexOf(jsEnd); + String jsString = null; + if (begin != -1 && end != -1 && begin < end) { + jsString = resString.substring(begin + jsBegin.length(), end); + } + JSONObject js = new JSONObject(jsString); + //获取GTASK_JSON_LISTS + return js.getJSONObject("t").getJSONArray(GTaskStringUtils.GTASK_JSON_LISTS); + } catch (ClientProtocolException e) { + Log.e(TAG, e.toString()); + e.printStackTrace(); + throw new NetworkFailureException("gettasklists: httpget failed"); + } catch (IOException e) { + Log.e(TAG, e.toString()); + e.printStackTrace(); + throw new NetworkFailureException("gettasklists: httpget failed"); + } catch (JSONException e) { + Log.e(TAG, e.toString()); + e.printStackTrace(); + throw new ActionFailureException("get task lists: handing jasonobject failed"); + } + } + + /* + * 通过传入的TASKList的gid,从网络上获取相应属于这个任务列表的任务 + */ + public JSONArray getTaskList(String listGid) throws NetworkFailureException { + commitUpdate(); + try { + JSONObject jsPost = new JSONObject(); + JSONArray actionList = new JSONArray(); + JSONObject action = new JSONObject(); + + // action_list + action.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE, + GTaskStringUtils.GTASK_JSON_ACTION_TYPE_GETALL); + action.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, getActionId()); + action.put(GTaskStringUtils.GTASK_JSON_LIST_ID, listGid); //这里设置为传入的listGid + action.put(GTaskStringUtils.GTASK_JSON_GET_DELETED, false); + actionList.put(action); + jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList); + + // client_version + jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion); + + JSONObject jsResponse = postRequest(jsPost); + return jsResponse.getJSONArray(GTaskStringUtils.GTASK_JSON_TASKS); + } catch (JSONException e) { + Log.e(TAG, e.toString()); + e.printStackTrace(); + throw new ActionFailureException("get task list: handing jsonobject failed"); + } + } + + public Account getSyncAccount() { + return mAccount; + } + + //重置更新的内容 + public void resetUpdateArray() { + mUpdateArray = null; + } +} diff --git a/remote3 b/remote3 index 66dc905..6466dd9 100644 --- a/remote3 +++ b/remote3 @@ -1 +1,866 @@ -undefined \ No newline at end of file +/* + * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) + * + * 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 net.micode.notes.gtask.remote; +import android.app.Activity; +import android.app.Service; +import android.content.Context; +import android.content.Intent; +import android.os.Bundle; +import android.os.IBinder; +public class GTaskManager { + private static final String TAG = GTaskManager.class.getSimpleName(); + public static final int STATE_SUCCESS = 0; + public static final int STATE_NETWORK_ERROR = 1; + public static final int STATE_INTERNAL_ERROR = 2; + public static final int STATE_SYNC_IN_PROGRESS = 3; + public static final int STATE_SYNC_CANCELLED = 4; + private static GTaskManager mInstance = null; + + private Activity mActivity; + private Context mContext; + private ContentResolver mContentResolver; + private boolean mSyncing; + private boolean mCancelled; + private HashMap mGTaskListHashMap; + private HashMap mGTaskHashMap; + private HashMap mMetaHashMap; + private TaskList mMetaList; + private HashSet mLocalDeleteIdMap; + private HashMap mGidToNid; + private HashMap mNidToGid; + + private GTaskManager() { //对象初始化函数 + mSyncing = false; //正在同步,flase代表未执行 + mCancelled = false; //全局标识，flase代表可以执行 + mGTaskListHashMap = new HashMap(); //<>代表Java的泛型,就是创建一个用类型作为参数的类。 + mGTaskHashMap = new HashMap(); + mMetaHashMap = new HashMap(); + mMetaList = null; + mLocalDeleteIdMap = new HashSet(); + mGidToNid = new HashMap(); //GoogleID to NodeID?? + mNidToGid = new HashMap(); //NodeID to GoogleID???通过hashmap散列表建立映射 + } + + /** + * 包含关键字synchronized，语言级同步，指明该函数可能运行在多线程的环境下。 + * 功能：类初始化函数 + * @author TTS + * @return GtaskManger + */ + public static synchronized GTaskManager getInstance() { //可能运行在多线程环境下，使用语言级同步--synchronized + if (mInstance == null) { + mInstance = new GTaskManager(); + } + return mInstance; + } + + /** + * 包含关键字synchronized，语言级同步，指明该函数可能运行在多线程的环境下。 + * @author TTS + * @param activity + */ + public synchronized void setActivityContext(Activity activity) { + // used for getting auth token + mActivity = activity; + } + + /** + * 核心函数 + * 功能：实现了本地同步操作和远端同步操作 + * @author TTS + * @param context-----获取上下文 + * @param asyncTask-------用于同步的异步操作类 + * @return int + */ + public int sync(Context context, GTaskASyncTask asyncTask) { //核心函数 + if (mSyncing) { + Log.d(TAG, "Sync is in progress"); //创建日志文件（调试信息），debug + return STATE_SYNC_IN_PROGRESS; + } + mContext = context; + mContentResolver = mContext.getContentResolver(); + mSyncing = true; + mCancelled = false; + mGTaskListHashMap.clear(); + mGTaskHashMap.clear(); + mMetaHashMap.clear(); + mLocalDeleteIdMap.clear(); + mGidToNid.clear(); + mNidToGid.clear(); + + try { + GTaskClient client = GTaskClient.getInstance(); //getInstance即为创建一个实例,client--客户机 + client.resetUpdateArray(); //JSONArray类型，reset即置为NULL + + // login google task + if (!mCancelled) { + if (!client.login(mActivity)) { + throw new NetworkFailureException("login google task failed"); + } + } + + // get the task list from google + asyncTask.publishProgess(mContext.getString(R.string.sync_progress_init_list)); + initGTaskList(); //获取Google上的JSONtasklist转为本地TaskList + + // do content sync work + asyncTask.publishProgess(mContext.getString(R.string.sync_progress_syncing)); + syncContent(); + } catch (NetworkFailureException e) { //分为两种异常，此类异常为网络异常 + Log.e(TAG, e.toString()); //创建日志文件（调试信息），error + return STATE_NETWORK_ERROR; + } catch (ActionFailureException e) { //此类异常为操作异常 + Log.e(TAG, e.toString()); + return STATE_INTERNAL_ERROR; + } catch (Exception e) { + Log.e(TAG, e.toString()); + e.printStackTrace(); + return STATE_INTERNAL_ERROR; + } finally { + mGTaskListHashMap.clear(); + mGTaskHashMap.clear(); + mMetaHashMap.clear(); + mLocalDeleteIdMap.clear(); + mGidToNid.clear(); + mNidToGid.clear(); + mSyncing = false; + } + + return mCancelled ? STATE_SYNC_CANCELLED : STATE_SUCCESS; + } + + /** + *功能：初始化GtaskList，获取Google上的JSONtasklist转为本地TaskList。 + *获得的数据存储在mMetaList，mGTaskListHashMap，mGTaskHashMap + *@author TTS + *@exception NetworkFailureException + *@return void + */ + private void initGTaskList() throws NetworkFailureException { + if (mCancelled) + return; + GTaskClient client = GTaskClient.getInstance(); //getInstance即为创建一个实例，client应指远端客户机 + try { + //Json对象是Name Value对(即子元素)的无序集合，相当于一个Map对象。JsonObject类是bantouyan-json库对Json对象的抽象，提供操纵Json对象的各种方法。 + //其格式为{"key1":value1,"key2",value2....};key 必须是字符串。 + //因为ajax请求不刷新页面，但配合js可以实现局部刷新，因此json常常被用来作为异步请求的返回对象使用。 + JSONArray jsTaskLists = client.getTaskLists(); //原注释为get task list------lists？？？ + + // init meta list first + mMetaList = null; //TaskList类型 + for (int i = 0; i < jsTaskLists.length(); i++) { + JSONObject object = jsTaskLists.getJSONObject(i); //JSONObject与JSONArray一个为对象，一个为数组。此处取出单个JASONObject + String gid = object.getString(GTaskStringUtils.GTASK_JSON_ID); + String name = object.getString(GTaskStringUtils.GTASK_JSON_NAME); + + if (name.equals(GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_META)) { + mMetaList = new TaskList(); //MetaList意为元表,Tasklist类型，此处为初始化 + mMetaList.setContentByRemoteJSON(object); //将JSON中部分数据复制到自己定义的对象中相对应的数据：name->mname... + + // load meta data + JSONArray jsMetas = client.getTaskList(gid); //原注释为get action_list------list？？？ + for (int j = 0; j < jsMetas.length(); j++) { + object = (JSONObject) jsMetas.getJSONObject(j); + MetaData metaData = new MetaData(); //继承自Node + metaData.setContentByRemoteJSON(object); + if (metaData.isWorthSaving()) { //if not worth to save，metadata将不加入mMetaList + mMetaList.addChildTask(metaData); + if (metaData.getGid() != null) { + mMetaHashMap.put(metaData.getRelatedGid(), metaData); + } + } + } + } + } + + // create meta list if not existed + if (mMetaList == null) { + mMetaList = new TaskList(); + mMetaList.setName(GTaskStringUtils.MIUI_FOLDER_PREFFIX + + GTaskStringUtils.FOLDER_META); + GTaskClient.getInstance().createTaskList(mMetaList); + } + + // init task list + for (int i = 0; i < jsTaskLists.length(); i++) { + JSONObject object = jsTaskLists.getJSONObject(i); + String gid = object.getString(GTaskStringUtils.GTASK_JSON_ID); //通过getString函数传入本地某个标志数据的名称，获取其在远端的名称。 + String name = object.getString(GTaskStringUtils.GTASK_JSON_NAME); + + if (name.startsWith(GTaskStringUtils.MIUI_FOLDER_PREFFIX) + && !name.equals(GTaskStringUtils.MIUI_FOLDER_PREFFIX + + GTaskStringUtils.FOLDER_META)) { + TaskList tasklist = new TaskList(); //继承自Node + tasklist.setContentByRemoteJSON(object); + mGTaskListHashMap.put(gid, tasklist); + mGTaskHashMap.put(gid, tasklist); //为什么加两遍？？？ + + // load tasks + JSONArray jsTasks = client.getTaskList(gid); + for (int j = 0; j < jsTasks.length(); j++) { + object = (JSONObject) jsTasks.getJSONObject(j); + gid = object.getString(GTaskStringUtils.GTASK_JSON_ID); + Task task = new Task(); + task.setContentByRemoteJSON(object); + if (task.isWorthSaving()) { + task.setMetaInfo(mMetaHashMap.get(gid)); + tasklist.addChildTask(task); + mGTaskHashMap.put(gid, task); + } + } + } + } + } catch (JSONException e) { + Log.e(TAG, e.toString()); + e.printStackTrace(); + throw new ActionFailureException("initGTaskList: handing JSONObject failed"); + } + } + + /** + * 功能：本地内容同步操作 + * @throws NetworkFailureException + * @return 无返回值 + */ + private void syncContent() throws NetworkFailureException { //本地内容同步操作 + int syncType; + Cursor c = null; //数据库指针 + String gid; //GoogleID?? + Node node; //Node包含Sync_Action的不同类型 + + mLocalDeleteIdMap.clear(); //HashSet类型 + + if (mCancelled) { + return; + } + + // for local deleted note + try { + c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE, + "(type<>? AND parent_id=?)", new String[] { + String.valueOf(Notes.TYPE_SYSTEM), String.valueOf(Notes.ID_TRASH_FOLER) + }, null); + if (c != null) { + while (c.moveToNext()) { + gid = c.getString(SqlNote.GTASK_ID_COLUMN); + node = mGTaskHashMap.get(gid); + if (node != null) { + mGTaskHashMap.remove(gid); + doContentSync(Node.SYNC_ACTION_DEL_REMOTE, node, c); + } + + mLocalDeleteIdMap.add(c.getLong(SqlNote.ID_COLUMN)); + } + } else { + Log.w(TAG, "failed to query trash folder"); + } + } finally { + if (c != null) { + c.close(); + c = null; + } + } + + // sync folder first + syncFolder(); + + // for note existing in database + try { + c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE, + "(type=? AND parent_id<>?)", new String[] { + String.valueOf(Notes.TYPE_NOTE), String.valueOf(Notes.ID_TRASH_FOLER) + }, NoteColumns.TYPE + " DESC"); + if (c != null) { + while (c.moveToNext()) { + gid = c.getString(SqlNote.GTASK_ID_COLUMN); + node = mGTaskHashMap.get(gid); + if (node != null) { + mGTaskHashMap.remove(gid); + mGidToNid.put(gid, c.getLong(SqlNote.ID_COLUMN)); //通过hashmap建立联系 + mNidToGid.put(c.getLong(SqlNote.ID_COLUMN), gid); //通过hashmap建立联系 + syncType = node.getSyncAction(c); + } else { + if (c.getString(SqlNote.GTASK_ID_COLUMN).trim().length() == 0) { + // local add + syncType = Node.SYNC_ACTION_ADD_REMOTE; + } else { + // remote delete + syncType = Node.SYNC_ACTION_DEL_LOCAL; + } + } + doContentSync(syncType, node, c); + } + } else { + Log.w(TAG, "failed to query existing note in database"); + } + + } finally { + if (c != null) { + c.close(); + c = null; + } + } + + // go through remaining items + Iterator> iter = mGTaskHashMap.entrySet().iterator(); //Iterator迭代器 + while (iter.hasNext()) { + Map.Entry entry = iter.next(); + node = entry.getValue(); + doContentSync(Node.SYNC_ACTION_ADD_LOCAL, node, null); + } + + // mCancelled can be set by another thread, so we neet to check one by //thread----线程 + // one + // clear local delete table + if (!mCancelled) { + if (!DataUtils.batchDeleteNotes(mContentResolver, mLocalDeleteIdMap)) { + throw new ActionFailureException("failed to batch-delete local deleted notes"); + } + } + + // refresh local sync id + if (!mCancelled) { + GTaskClient.getInstance().commitUpdate(); + refreshLocalSyncId(); + } + + } + + /** + * 功能： + * @author TTS + * @throws NetworkFailureException + */ + private void syncFolder() throws NetworkFailureException { + Cursor c = null; + String gid; + Node node; + int syncType; + + if (mCancelled) { + return; + } + + // for root folder + try { + c = mContentResolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, + Notes.ID_ROOT_FOLDER), SqlNote.PROJECTION_NOTE, null, null, null); + if (c != null) { + c.moveToNext(); + gid = c.getString(SqlNote.GTASK_ID_COLUMN); + node = mGTaskHashMap.get(gid); + if (node != null) { + mGTaskHashMap.remove(gid); + mGidToNid.put(gid, (long) Notes.ID_ROOT_FOLDER); + mNidToGid.put((long) Notes.ID_ROOT_FOLDER, gid); + // for system folder, only update remote name if necessary + if (!node.getName().equals( + GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_DEFAULT)) + doContentSync(Node.SYNC_ACTION_UPDATE_REMOTE, node, c); + } else { + doContentSync(Node.SYNC_ACTION_ADD_REMOTE, node, c); + } + } else { + Log.w(TAG, "failed to query root folder"); + } + } finally { + if (c != null) { + c.close(); + c = null; + } + } + + // for call-note folder + try { + c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE, "(_id=?)", + new String[] { + String.valueOf(Notes.ID_CALL_RECORD_FOLDER) + }, null); + if (c != null) { + if (c.moveToNext()) { + gid = c.getString(SqlNote.GTASK_ID_COLUMN); + node = mGTaskHashMap.get(gid); + if (node != null) { + mGTaskHashMap.remove(gid); + mGidToNid.put(gid, (long) Notes.ID_CALL_RECORD_FOLDER); + mNidToGid.put((long) Notes.ID_CALL_RECORD_FOLDER, gid); + // for system folder, only update remote name if + // necessary + if (!node.getName().equals( + GTaskStringUtils.MIUI_FOLDER_PREFFIX + + GTaskStringUtils.FOLDER_CALL_NOTE)) + doContentSync(Node.SYNC_ACTION_UPDATE_REMOTE, node, c); + } else { + doContentSync(Node.SYNC_ACTION_ADD_REMOTE, node, c); + } + } + } else { + Log.w(TAG, "failed to query call note folder"); + } + } finally { + if (c != null) { + c.close(); + c = null; + } + } + + // for local existing folders + try { + c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE, + "(type=? AND parent_id<>?)", new String[] { + String.valueOf(Notes.TYPE_FOLDER), String.valueOf(Notes.ID_TRASH_FOLER) + }, NoteColumns.TYPE + " DESC"); + if (c != null) { + while (c.moveToNext()) { + gid = c.getString(SqlNote.GTASK_ID_COLUMN); + node = mGTaskHashMap.get(gid); + if (node != null) { + mGTaskHashMap.remove(gid); + mGidToNid.put(gid, c.getLong(SqlNote.ID_COLUMN)); + mNidToGid.put(c.getLong(SqlNote.ID_COLUMN), gid); + syncType = node.getSyncAction(c); + } else { + if (c.getString(SqlNote.GTASK_ID_COLUMN).trim().length() == 0) { + // local add + syncType = Node.SYNC_ACTION_ADD_REMOTE; + } else { + // remote delete + syncType = Node.SYNC_ACTION_DEL_LOCAL; + } + } + doContentSync(syncType, node, c); + } + } else { + Log.w(TAG, "failed to query existing folder"); + } + } finally { + if (c != null) { + c.close(); + c = null; + } + } + + // for remote add folders + Iterator> iter = mGTaskListHashMap.entrySet().iterator(); + while (iter.hasNext()) { + Map.Entry entry = iter.next(); + gid = entry.getKey(); + node = entry.getValue(); + if (mGTaskHashMap.containsKey(gid)) { + mGTaskHashMap.remove(gid); + doContentSync(Node.SYNC_ACTION_ADD_LOCAL, node, null); + } + } + + if (!mCancelled) + GTaskClient.getInstance().commitUpdate(); + } + + /** + * 功能：syncType分类，addLocalNode，addRemoteNode，deleteNode，updateLocalNode，updateRemoteNode + * @author TTS + * @param syncType + * @param node + * @param c + * @throws NetworkFailureException + */ + private void doContentSync(int syncType, Node node, Cursor c) throws NetworkFailureException { + if (mCancelled) { + return; + } + + MetaData meta; + switch (syncType) { + case Node.SYNC_ACTION_ADD_LOCAL: + addLocalNode(node); + break; + case Node.SYNC_ACTION_ADD_REMOTE: + addRemoteNode(node, c); + break; + case Node.SYNC_ACTION_DEL_LOCAL: + meta = mMetaHashMap.get(c.getString(SqlNote.GTASK_ID_COLUMN)); + if (meta != null) { + GTaskClient.getInstance().deleteNode(meta); + } + mLocalDeleteIdMap.add(c.getLong(SqlNote.ID_COLUMN)); + break; + case Node.SYNC_ACTION_DEL_REMOTE: + meta = mMetaHashMap.get(node.getGid()); + if (meta != null) { + GTaskClient.getInstance().deleteNode(meta); + } + GTaskClient.getInstance().deleteNode(node); + break; + case Node.SYNC_ACTION_UPDATE_LOCAL: + updateLocalNode(node, c); + break; + case Node.SYNC_ACTION_UPDATE_REMOTE: + updateRemoteNode(node, c); + break; + case Node.SYNC_ACTION_UPDATE_CONFLICT: + // merging both modifications maybe a good idea + // right now just use local update simply + updateRemoteNode(node, c); + break; + case Node.SYNC_ACTION_NONE: + break; + case Node.SYNC_ACTION_ERROR: + default: + throw new ActionFailureException("unkown sync action type"); + } + } + + /** + * 功能：本地增加Node + * @author TTS + * @param node + * @throws NetworkFailureException + */ + private void addLocalNode(Node node) throws NetworkFailureException { + if (mCancelled) { + return; + } + + SqlNote sqlNote; + if (node instanceof TaskList) { + if (node.getName().equals( + GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_DEFAULT)) { + sqlNote = new SqlNote(mContext, Notes.ID_ROOT_FOLDER); + } else if (node.getName().equals( + GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_CALL_NOTE)) { + sqlNote = new SqlNote(mContext, Notes.ID_CALL_RECORD_FOLDER); + } else { + sqlNote = new SqlNote(mContext); + sqlNote.setContent(node.getLocalJSONFromContent()); + sqlNote.setParentId(Notes.ID_ROOT_FOLDER); + } + } else { + sqlNote = new SqlNote(mContext); + JSONObject js = node.getLocalJSONFromContent(); + try { + if (js.has(GTaskStringUtils.META_HEAD_NOTE)) { + JSONObject note = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE); + if (note.has(NoteColumns.ID)) { + long id = note.getLong(NoteColumns.ID); + if (DataUtils.existInNoteDatabase(mContentResolver, id)) { + // the id is not available, have to create a new one + note.remove(NoteColumns.ID); + } + } + } + + if (js.has(GTaskStringUtils.META_HEAD_DATA)) { + JSONArray dataArray = js.getJSONArray(GTaskStringUtils.META_HEAD_DATA); + for (int i = 0; i < dataArray.length(); i++) { + JSONObject data = dataArray.getJSONObject(i); + if (data.has(DataColumns.ID)) { + long dataId = data.getLong(DataColumns.ID); + if (DataUtils.existInDataDatabase(mContentResolver, dataId)) { + // the data id is not available, have to create + // a new one + data.remove(DataColumns.ID); + } + } + } + + } + } catch (JSONException e) { + Log.w(TAG, e.toString()); + e.printStackTrace(); + } + sqlNote.setContent(js); + + Long parentId = mGidToNid.get(((Task) node).getParent().getGid()); + if (parentId == null) { + Log.e(TAG, "cannot find task's parent id locally"); + throw new ActionFailureException("cannot add local node"); + } + sqlNote.setParentId(parentId.longValue()); + } + + // create the local node + sqlNote.setGtaskId(node.getGid()); + sqlNote.commit(false); + + // update gid-nid mapping + mGidToNid.put(node.getGid(), sqlNote.getId()); + mNidToGid.put(sqlNote.getId(), node.getGid()); + + // update meta + updateRemoteMeta(node.getGid(), sqlNote); + } + + /** + * 功能：update本地node + * @author TTS + * @param node + * ----同步操作的基础数据类型 + * @param c + * ----Cursor + * @throws NetworkFailureException + */ + private void updateLocalNode(Node node, Cursor c) throws NetworkFailureException { + if (mCancelled) { + return; + } + + SqlNote sqlNote; + // update the note locally + sqlNote = new SqlNote(mContext, c); + sqlNote.setContent(node.getLocalJSONFromContent()); + + Long parentId = (node instanceof Task) ? mGidToNid.get(((Task) node).getParent().getGid()) + : new Long(Notes.ID_ROOT_FOLDER); + if (parentId == null) { + Log.e(TAG, "cannot find task's parent id locally"); + throw new ActionFailureException("cannot update local node"); + } + sqlNote.setParentId(parentId.longValue()); + sqlNote.commit(true); + + // update meta info + updateRemoteMeta(node.getGid(), sqlNote); + } + + /** + * 功能：远程增加Node + * 需要updateRemoteMeta + * @author TTS + * @param node + * ----同步操作的基础数据类型 + * @param c + * --Cursor + * @throws NetworkFailureException + */ + private void addRemoteNode(Node node, Cursor c) throws NetworkFailureException { + if (mCancelled) { + return; + } + + SqlNote sqlNote = new SqlNote(mContext, c); //从本地mContext中获取内容 + Node n; + + // update remotely + if (sqlNote.isNoteType()) { + Task task = new Task(); + task.setContentByLocalJSON(sqlNote.getContent()); + + String parentGid = mNidToGid.get(sqlNote.getParentId()); + if (parentGid == null) { + Log.e(TAG, "cannot find task's parent tasklist"); //调试信息 + throw new ActionFailureException("cannot add remote task"); + } + mGTaskListHashMap.get(parentGid).addChildTask(task); //在本地生成的GTaskList中增加子结点 + + //登录远程服务器，创建Task + GTaskClient.getInstance().createTask(task); + n = (Node) task; + + // add meta + updateRemoteMeta(task.getGid(), sqlNote); + } else { + TaskList tasklist = null; + + // we need to skip folder if it has already existed + String folderName = GTaskStringUtils.MIUI_FOLDER_PREFFIX; + if (sqlNote.getId() == Notes.ID_ROOT_FOLDER) + folderName += GTaskStringUtils.FOLDER_DEFAULT; + else if (sqlNote.getId() == Notes.ID_CALL_RECORD_FOLDER) + folderName += GTaskStringUtils.FOLDER_CALL_NOTE; + else + folderName += sqlNote.getSnippet(); + + //iterator迭代器，通过统一的接口迭代所有的map元素 + Iterator> iter = mGTaskListHashMap.entrySet().iterator(); + while (iter.hasNext()) { + Map.Entry entry = iter.next(); + String gid = entry.getKey(); + TaskList list = entry.getValue(); + + if (list.getName().equals(folderName)) { + tasklist = list; + if (mGTaskHashMap.containsKey(gid)) { + mGTaskHashMap.remove(gid); + } + break; + } + } + + // no match we can add now + if (tasklist == null) { + tasklist = new TaskList(); + tasklist.setContentByLocalJSON(sqlNote.getContent()); + GTaskClient.getInstance().createTaskList(tasklist); + mGTaskListHashMap.put(tasklist.getGid(), tasklist); + } + n = (Node) tasklist; + } + + // update local note + sqlNote.setGtaskId(n.getGid()); + sqlNote.commit(false); + sqlNote.resetLocalModified(); + sqlNote.commit(true); + + // gid-id mapping //创建id间的映射 + mGidToNid.put(n.getGid(), sqlNote.getId()); + mNidToGid.put(sqlNote.getId(), n.getGid()); + } + + /** + * 功能：更新远端的Node，包含meta更新(updateRemoteMeta) + * @author TTS + * @param node + * ----同步操作的基础数据类型 + * @param c + * --Cursor + * @throws NetworkFailureException + */ + private void updateRemoteNode(Node node, Cursor c) throws NetworkFailureException { + if (mCancelled) { + return; + } + + SqlNote sqlNote = new SqlNote(mContext, c); + + // update remotely + node.setContentByLocalJSON(sqlNote.getContent()); + GTaskClient.getInstance().addUpdateNode(node); //GTaskClient用途为从本地登陆远端服务器 + + // update meta + updateRemoteMeta(node.getGid(), sqlNote); + + // move task if necessary + if (sqlNote.isNoteType()) { + Task task = (Task) node; + TaskList preParentList = task.getParent(); + //preParentList为通过node获取的父节点列表 + + String curParentGid = mNidToGid.get(sqlNote.getParentId()); + //curParentGid为通过光标在数据库中找到sqlNote的mParentId，再通过mNidToGid由long类型转为String类型的Gid + + if (curParentGid == null) { + Log.e(TAG, "cannot find task's parent tasklist"); + throw new ActionFailureException("cannot update remote task"); + } + TaskList curParentList = mGTaskListHashMap.get(curParentGid); + //通过HashMap找到对应Gid的TaskList + + if (preParentList != curParentList) { //????????????? + preParentList.removeChildTask(task); + curParentList.addChildTask(task); + GTaskClient.getInstance().moveTask(task, preParentList, curParentList); + } + } + + // clear local modified flag + sqlNote.resetLocalModified(); + //commit到本地数据库 + sqlNote.commit(true); + } + + /** + * 功能：升级远程meta。 meta---元数据----计算机文件系统管理数据---管理数据的数据。 + * @author TTS + * @param gid + * ---GoogleID为String类型 + * @param sqlNote + * ---同步前的数据库操作，故使用类SqlNote + * @throws NetworkFailureException + */ + private void updateRemoteMeta(String gid, SqlNote sqlNote) throws NetworkFailureException { + if (sqlNote != null && sqlNote.isNoteType()) { + MetaData metaData = mMetaHashMap.get(gid); + if (metaData != null) { + metaData.setMeta(gid, sqlNote.getContent()); + GTaskClient.getInstance().addUpdateNode(metaData); + } else { + metaData = new MetaData(); + metaData.setMeta(gid, sqlNote.getContent()); + mMetaList.addChildTask(metaData); + mMetaHashMap.put(gid, metaData); + GTaskClient.getInstance().createTask(metaData); + } + } + } + + /** + * 功能：刷新本地，给sync的ID对应上最后更改过的对象 + * @author TTS + * @return void + * @throws NetworkFailureException + */ + private void refreshLocalSyncId() throws NetworkFailureException { + if (mCancelled) { + return; + } + + // get the latest gtask list //获取最近的（最晚的）gtask list + mGTaskHashMap.clear(); + mGTaskListHashMap.clear(); + mMetaHashMap.clear(); + initGTaskList(); + + Cursor c = null; + try { + c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE, + "(type<>? AND parent_id<>?)", new String[] { + String.valueOf(Notes.TYPE_SYSTEM), String.valueOf(Notes.ID_TRASH_FOLER) + }, NoteColumns.TYPE + " DESC"); //query语句：五个参数，NoteColumns.TYPE + " DESC"-----为按类型递减顺序返回查询结果。new String[] {String.valueOf(Notes.TYPE_SYSTEM), String.valueOf(Notes.ID_TRASH_FOLER)}------为选择参数。"(type<>? AND parent_id<>?)"-------指明返回行过滤器。SqlNote.PROJECTION_NOTE--------应返回的数据列的名字。Notes.CONTENT_NOTE_URI--------contentProvider包含所有数据集所对应的uri + if (c != null) { + while (c.moveToNext()) { + String gid = c.getString(SqlNote.GTASK_ID_COLUMN); + Node node = mGTaskHashMap.get(gid); + if (node != null) { + mGTaskHashMap.remove(gid); + ContentValues values = new ContentValues(); //在ContentValues中创建键值对。准备通过contentResolver写入数据 + values.put(NoteColumns.SYNC_ID, node.getLastModified()); + mContentResolver.update(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, //进行批量更改，选择参数为NULL，应该可以用insert替换，参数分别为表名和需要更新的value对象。 + c.getLong(SqlNote.ID_COLUMN)), values, null, null); + } else { + Log.e(TAG, "something is missed"); + throw new ActionFailureException( + "some local items don't have gid after sync"); + } + } + } else { + Log.w(TAG, "failed to query local note to refresh sync id"); + } + } finally { + if (c != null) { + c.close(); + c = null; + } + } + } + + /** + * 功能：获取同步账号,mAccount.name + * @author TTS + * @return String + */ + public String getSyncAccount() { + return GTaskClient.getInstance().getSyncAccount().name; + } + + /** + * 功能：取消同步，置mCancelled为true + * @author TTS + */ + public void cancelSync() { + mCancelled = true; + } +} diff --git a/remote4 b/remote4 index 66dc905..66dce46 100644 --- a/remote4 +++ b/remote4 @@ -1 +1,144 @@ -undefined \ No newline at end of file +/* + * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) + * + * 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 net.micode.notes.gtask.remote; + +/* + * Service是在一段不定的时间运行在后台，不和用户交互的应用组件 + * 主要方法： + * private void startSync() 启动一个同步工作 + * private void cancelSync() 取消同步 + * public void onCreate() + * public int onStartCommand(Intent intent, int flags, int startId) service生命周期的组成部分，相当于重启service（比如在被暂停之后），而不是创建一个新的service + * public void onLowMemory() 在没有内存的情况下如果存在service则结束掉这的service + * public IBinder onBind() + * public void sendBroadcast(String msg) 发送同步的相关通知 + * public static void startSync(Activity activity) + * public static void cancelSync(Context context) + * public static boolean isSyncing() 判读是否在进行同步 + * public static String getProgressString() 获取当前进度的信息 + */ +import android.app.Activity; +import android.app.Service; +import android.content.Context; +import android.content.Intent; +import android.os.Bundle; +import android.os.IBinder; +public class GTaskSyncService extends Service { + public final static String ACTION_STRING_NAME = "sync_action_type"; + + public final static int ACTION_START_SYNC = 0; + + public final static int ACTION_CANCEL_SYNC = 1; + + public final static int ACTION_INVALID = 2; + + public final static String GTASK_SERVICE_BROADCAST_NAME = "net.micode.notes.gtask.remote.gtask_sync_service"; + + public final static String GTASK_SERVICE_BROADCAST_IS_SYNCING = "isSyncing"; + + public final static String GTASK_SERVICE_BROADCAST_PROGRESS_MSG = "progressMsg"; + + private static GTaskASyncTask mSyncTask = null; + + private static String mSyncProgress = ""; + + //开始一个同步的工作 + private void startSync() { + if (mSyncTask == null) { + mSyncTask = new GTaskASyncTask(this, new GTaskASyncTask.OnCompleteListener() { + public void onComplete() { + mSyncTask = null; + sendBroadcast(""); + stopSelf(); + } + }); + sendBroadcast(""); + mSyncTask.execute(); //这个函数让任务是以单线程队列方式或线程池队列方式运行 + } + } + + + private void cancelSync() { + if (mSyncTask != null) { + mSyncTask.cancelSync(); + } + } + + @Override + public void onCreate() { //初始化一个service + mSyncTask = null; + } + + @Override + public int onStartCommand(Intent intent, int flags, int startId) { + Bundle bundle = intent.getExtras(); + if (bundle != null && bundle.containsKey(ACTION_STRING_NAME)) { + switch (bundle.getInt(ACTION_STRING_NAME, ACTION_INVALID)) { + //两种情况，开始同步或者取消同步 + case ACTION_START_SYNC: + startSync(); + break; + case ACTION_CANCEL_SYNC: + cancelSync(); + break; + default: + break; + } + return START_STICKY; //等待新的intent来是这个service继续运行 + } + return super.onStartCommand(intent, flags, startId); + } + + @Override + public void onLowMemory() { + if (mSyncTask != null) { + mSyncTask.cancelSync(); + } + } + + public IBinder onBind(Intent intent) { //不知道干吗用的 + return null; + } + + public void sendBroadcast(String msg) { + mSyncProgress = msg; + Intent intent = new Intent(GTASK_SERVICE_BROADCAST_NAME); //创建一个新的Intent + intent.putExtra(GTASK_SERVICE_BROADCAST_IS_SYNCING, mSyncTask != null); //附加INTENT中的相应参数的值 + intent.putExtra(GTASK_SERVICE_BROADCAST_PROGRESS_MSG, msg); + sendBroadcast(intent); //发送这个通知 + } + + public static void startSync(Activity activity) {//执行一个service，service的内容里的同步动作就是开始同步 + GTaskManager.getInstance().setActivityContext(activity); + Intent intent = new Intent(activity, GTaskSyncService.class); + intent.putExtra(GTaskSyncService.ACTION_STRING_NAME, GTaskSyncService.ACTION_START_SYNC); + activity.startService(intent); + } + + public static void cancelSync(Context context) {//执行一个service，service的内容里的同步动作就是取消同步 + Intent intent = new Intent(context, GTaskSyncService.class); + intent.putExtra(GTaskSyncService.ACTION_STRING_NAME, GTaskSyncService.ACTION_CANCEL_SYNC); + context.startService(intent); + } + + public static boolean isSyncing() { + return mSyncTask != null; + } + + public static String getProgressString() { + return mSyncProgress; + } +}