/*
* Copyright (C) 2009 Google Inc.
*
* 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.ch_linghu.fanfoudroid.ui.base;
import java.util.ArrayList;
import java.util.List;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;
import com.ch_linghu.fanfoudroid.R;
import com.ch_linghu.fanfoudroid.app.Preferences;
import com.ch_linghu.fanfoudroid.data.Tweet;
import com.ch_linghu.fanfoudroid.data.User;
import com.ch_linghu.fanfoudroid.db.UserInfoTable;
import com.ch_linghu.fanfoudroid.fanfou.Paging;
import com.ch_linghu.fanfoudroid.fanfou.Status;
import com.ch_linghu.fanfoudroid.http.HttpException;
import com.ch_linghu.fanfoudroid.task.GenericTask;
import com.ch_linghu.fanfoudroid.task.AbstractTaskAdapter;
import com.ch_linghu.fanfoudroid.task.ITaskListener;
import com.ch_linghu.fanfoudroid.task.TaskManager;
import com.ch_linghu.fanfoudroid.task.TaskParams;
import com.ch_linghu.fanfoudroid.task.TaskResult;
import com.ch_linghu.fanfoudroid.ui.module.SimpleFeedback;
import com.ch_linghu.fanfoudroid.ui.module.TweetAdapter;
import com.ch_linghu.fanfoudroid.ui.module.UserCursorAdapter;
import com.ch_linghu.fanfoudroid.util.DateTimeHelper;
/**
* TwitterCursorBaseLine用于带有静态数据来源（对应数据库的，与twitter表同构的特定表）的展现
*/
public abstract class UserCursorBaseActivity extends UserListBaseActivity {
/**
* 第一种方案：(采取第一种) 暂不放在数据库中，直接从Api读取。
*
* 第二种方案： 麻烦的是api数据与数据库同步，当收听人数比较多的时候，一次性读取太费流量 按照饭否api每次分页100人
* 当收听数<100时先从数据库一次性根据API返回的ID列表读取数据，如果数据库中的收听数<总数，那么从API中读取所有用户信息并同步到数据库中。
* 当收听数>100时采取分页加载，先按照id
* 获取数据库里前100用户,如果用户数量<100则从api中加载，从page=1开始下载，同步到数据库中，单击更多继续从数据库中加载
* 当数据库中的数据读取到最后一页后，则从api中加载并更新到数据库中。 单击刷新按钮则从api加载并同步到数据库中
*
*/
static final String TAG = "UserCursorBaseActivity";
// Views.
protected ListView mUserList;
protected UserCursorAdapter mUserListAdapter;
protected TextView loadMoreBtn;
protected ProgressBar loadMoreGIF;
protected TextView loadMoreBtnTop;
protected ProgressBar loadMoreGIFTop;
protected static int lastPosition = 0;
// Tasks.
protected TaskManager taskManager = new TaskManager();
private GenericTask mRetrieveTask;
private GenericTask mFollowersRetrieveTask;
private GenericTask mGetMoreTask;// 每次十个用户
protected abstract String getUserId();// 获得用户id
private ITaskListener mRetrieveTaskListener = new AbstractTaskAdapter() {
@Override
public String getName() {
return "RetrieveTask";
}
@Override
public void onPostExecute(GenericTask task, TaskResult result) {
if (result == TaskResult.AUTH_ERROR) {
logout();
} else if (result == TaskResult.OK) {
SharedPreferences.Editor editor = getPreferences().edit();
editor.putLong(Preferences.LAST_TWEET_REFRESH_KEY,
DateTimeHelper.getNowTime());
editor.commit();
// TODO: 1. StatusType(DONE) ; 2. 只有在取回的数据大于MAX时才做GC,
// 因为小于时可以保证数据的连续性
// FIXME： gc需要带owner
// getDb().gc(getDatabaseType()); // GC
draw();
goTop();
} else {
// Do nothing.
}
// loadMoreGIFTop.setVisibility(View.GONE);
updateProgress("");
}
@Override
public void onPreExecute(GenericTask task) {
onRetrieveBegin();
}
@Override
public void onProgressUpdate(GenericTask task, Object param) {
Log.d(TAG, "onProgressUpdate");
draw();
}
};
private ITaskListener mFollowerRetrieveTaskListener = new AbstractTaskAdapter() {
@Override
public String getName() {
return "FollowerRetrieve";
}
@Override
public void onPostExecute(GenericTask task, TaskResult result) {
if (result == TaskResult.OK) {
SharedPreferences sp = getPreferences();
SharedPreferences.Editor editor = sp.edit();
editor.putLong(Preferences.LAST_FOLLOWERS_REFRESH_KEY,
DateTimeHelper.getNowTime());
editor.commit();
} else {
// Do nothing.
}
}
};
// Refresh data at startup if last refresh was this long ago or greater.
private static final long REFRESH_THRESHOLD = 5 * 60 * 1000;
// Refresh followers if last refresh was this long ago or greater.
private static final long FOLLOWERS_REFRESH_THRESHOLD = 12 * 60 * 60 * 1000;
abstract protected Cursor fetchUsers();
public abstract int getDatabaseType();
public abstract String fetchMaxId();
public abstract String fetchMinId();
public abstract List<com.ch_linghu.fanfoudroid.fanfou.User> getUsers()
throws HttpException;
public abstract void addUsers(
ArrayList<com.ch_linghu.fanfoudroid.data.User> tusers);
// public abstract List<Status> getMessageSinceId(String maxId)
// throws WeiboException;
public abstract List<com.ch_linghu.fanfoudroid.fanfou.User> getUserSinceId(
String maxId) throws HttpException;
public abstract List<Status> getMoreMessageFromId(String minId)
throws HttpException;
public abstract Paging getNextPage();// 下一页数
public abstract Paging getCurrentPage();// 当前页数
protected abstract String[] getIds();
public static final int CONTEXT_REPLY_ID = Menu.FIRST + 1;
// public static final int CONTEXT_AT_ID = Menu.FIRST + 2;
public static final int CONTEXT_RETWEET_ID = Menu.FIRST + 3;
public static final int CONTEXT_DM_ID = Menu.FIRST + 4;
public static final int CONTEXT_MORE_ID = Menu.FIRST + 5;
public static final int CONTEXT_ADD_FAV_ID = Menu.FIRST + 6;
public static final int CONTEXT_DEL_FAV_ID = Menu.FIRST + 7;
@Override
protected void setupState() {
Cursor cursor;
cursor = fetchUsers(); //
setTitle(getActivityTitle());
startManagingCursor(cursor);
mUserList = (ListView) findViewById(R.id.follower_list);
// TODO: 需处理没有数据时的情况
Log.d("LDS", cursor.getCount() + " cursor count");
setupListHeader(true);
mUserListAdapter = new UserCursorAdapter(this, cursor);
mUserList.setAdapter(mUserListAdapter);
// ? registerOnClickListener(mTweetList);
}
/**
* 绑定listView底部 - 载入更多 NOTE: 必须在listView#setAdapter之前调用
*/
protected void setupListHeader(boolean addFooter) {
// Add footer to Listview
View footer = View.inflate(this, R.layout.listview_footer, null);
mUserList.addFooterView(footer, null, true);
// Find View
loadMoreBtn = (TextView) findViewById(R.id.ask_for_more);
loadMoreGIF = (ProgressBar) findViewById(R.id.rectangleProgressBar);
// loadMoreBtnTop = (TextView)findViewById(R.id.ask_for_more_header);
// loadMoreGIFTop =
// (ProgressBar)findViewById(R.id.rectangleProgressBar_header);
// loadMoreAnimation = (AnimationDrawable)
// loadMoreGIF.getIndeterminateDrawable();
}
@Override
protected void specialItemClicked(int position) {
if (position == mUserList.getCount() - 1) {
// footer
loadMoreGIF.setVisibility(View.VISIBLE);
doGetMore();
}
}
@Override
protected int getLayoutId() {
return R.layout.follower;
}
@Override
protected ListView getUserList() {
return mUserList;
}
@Override
protected TweetAdapter getUserAdapter() {
return mUserListAdapter;
}
@Override
protected boolean useBasicMenu() {
return true;
}
protected User getContextItemUser(int position) {
// position = position - 1;
// 加入footer跳过footer
if (position < mUserListAdapter.getCount()) {
Cursor cursor = (Cursor) mUserListAdapter.getItem(position);
if (cursor == null) {
return null;
} else {
return UserInfoTable.parseCursor(cursor);
}
} else {
return null;
}
}
@Override
protected void updateTweet(Tweet tweet) {
// TODO: updateTweet() 在哪里调用的? 目前尚只支持:
// updateTweet(String tweetId, ContentValues values)
// setFavorited(String tweetId, String isFavorited)
// 看是否还需要增加updateTweet(Tweet tweet)方法
// 对所有相关表的对应消息都进行刷新（如果存在的话）
// getDb().updateTweet(TwitterDbAdapter.TABLE_FAVORITE, tweet);
// getDb().updateTweet(TwitterDbAdapter.TABLE_MENTION, tweet);
// getDb().updateTweet(TwitterDbAdapter.TABLE_TWEET, tweet);
}
@Override
protected boolean _onCreate(Bundle savedInstanceState) {
Log.d(TAG, "onCreate.");
if (super._onCreate(savedInstanceState)) {
goTop(); // skip the header
boolean shouldRetrieve = false;
// FIXME： 该子类页面全部使用了这个统一的计时器，导致进入Mention等分页面后经常不会自动刷新
long lastRefreshTime = mPreferences.getLong(
Preferences.LAST_TWEET_REFRESH_KEY, 0);
long nowTime = DateTimeHelper.getNowTime();
long diff = nowTime - lastRefreshTime;
Log.d(TAG, "Last refresh was " + diff + " ms ago.");
/*
* if (diff > REFRESH_THRESHOLD) { shouldRetrieve = true; } else if
* (Utils.isTrue(savedInstanceState, SIS_RUNNING_KEY)) { // Check to
* see if it was running a send or retrieve task. // It makes no
* sense to resend the send request (don't want dupes) // so we
* instead retrieve (refresh) to see if the message has // posted.
* Log.d(TAG,
* "Was last running a retrieve or send task. Let's refresh.");
* shouldRetrieve = true; }
*/
shouldRetrieve = true;
if (shouldRetrieve) {
doRetrieve();
}
long lastFollowersRefreshTime = mPreferences.getLong(
Preferences.LAST_FOLLOWERS_REFRESH_KEY, 0);
diff = nowTime - lastFollowersRefreshTime;
Log.d(TAG, "Last followers refresh was " + diff + " ms ago.");
/*
* if (diff > FOLLOWERS_REFRESH_THRESHOLD && (mRetrieveTask == null
* || mRetrieveTask.getStatus() != GenericTask.Status.RUNNING)) {
* Log.d(TAG, "Refresh followers."); doRetrieveFollowers(); }
*/
return true;
} else {
return false;
}
}
@Override
protected void onResume() {
Log.d(TAG, "onResume.");
if (lastPosition != 0) {
mUserList.setSelection(lastPosition);
}
super.onResume();
checkIsLogedIn();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
if (mRetrieveTask != null
&& mRetrieveTask.getStatus() == GenericTask.Status.RUNNING) {
outState.putBoolean(SIS_RUNNING_KEY, true);
}
}
@Override
protected void onRestoreInstanceState(Bundle bundle) {
super.onRestoreInstanceState(bundle);
// mTweetEdit.updateCharsRemain();
}
@Override
protected void onDestroy() {
Log.d(TAG, "onDestroy.");
super.onDestroy();
taskManager.cancelAll();
}
@Override
protected void onPause() {
Log.d(TAG, "onPause.");
super.onPause();
lastPosition = mUserList.getFirstVisiblePosition();
}
@Override
protected void onRestart() {
Log.d(TAG, "onRestart.");
super.onRestart();
}
@Override
protected void onStart() {
Log.d(TAG, "onStart.");
super.onStart();
}
@Override
protected void onStop() {
Log.d(TAG, "onStop.");
super.onStop();
}
// UI helpers.
@Override
protected String getActivityTitle() {
// TODO Auto-generated method stub
return null;
}
@Override
protected void adapterRefresh() {
mUserListAdapter.notifyDataSetChanged();
mUserListAdapter.refresh();
}
// Retrieve interface
public void updateProgress(String progress) {
mProgressText.setText(progress);
}
public void draw() {
mUserListAdapter.refresh();
}
public void goTop() {
Log.d(TAG, "goTop.");
mUserList.setSelection(1);
}
private void doRetrieveFollowers() {
Log.d(TAG, "Attempting followers retrieve.");
if (mFollowersRetrieveTask != null
&& mFollowersRetrieveTask.getStatus() == GenericTask.Status.RUNNING) {
return;
} else {
mFollowersRetrieveTask = new FollowersRetrieveTask();
mFollowersRetrieveTask.setListener(mFollowerRetrieveTaskListener);
mFollowersRetrieveTask.execute();
taskManager.addTask(mFollowersRetrieveTask);
// Don't need to cancel FollowersTask (assuming it ends properly).
mFollowersRetrieveTask.setCancelable(false);
}
}
public void onRetrieveBegin() {
updateProgress(getString(R.string.page_status_refreshing));
}
public void doRetrieve() {
Log.d(TAG, "Attempting retrieve.");
if (mRetrieveTask != null
&& mRetrieveTask.getStatus() == GenericTask.Status.RUNNING) {
return;
} else {
mRetrieveTask = new RetrieveTask();
mRetrieveTask.setListener(mRetrieveTaskListener);
mRetrieveTask.setFeedback(mFeedback);
mRetrieveTask.execute();
// Add Task to manager
taskManager.addTask(mRetrieveTask);
}
}
/**
* TODO：从API获取当前Followers，并同步到数据库
*
* @author Dino
*
*/
private class RetrieveTask extends GenericTask {
@Override
protected TaskResult _doInBackground(TaskParams... params) {
Log.d(TAG, "load RetrieveTask");
List<com.ch_linghu.fanfoudroid.fanfou.User> usersList = null;
try {
usersList = getApi().getFollowersList(getUserId(),
getCurrentPage());
} catch (HttpException e) {
e.printStackTrace();
}
publishProgress(SimpleFeedback.calProgressBySize(40, 20, usersList));
ArrayList<User> users = new ArrayList<User>();
for (com.ch_linghu.fanfoudroid.fanfou.User user : usersList) {
if (isCancelled()) {
return TaskResult.CANCELLED;
}
users.add(User.create(user));
if (isCancelled()) {
return TaskResult.CANCELLED;
}
}
addUsers(users);
return TaskResult.OK;
}
}
private class FollowersRetrieveTask extends GenericTask {
@Override
protected TaskResult _doInBackground(TaskParams... params) {
try {
Log.d(TAG, "load FollowersErtrieveTask");
List<com.ch_linghu.fanfoudroid.fanfou.User> t_users = getUsers();
getDb().syncWeiboUsers(t_users);
} catch (HttpException e) {
Log.e(TAG, e.getMessage(), e);
return TaskResult.IO_ERROR;
}
return TaskResult.OK;
}
}
/**
* TODO:需要重写,获取下一批用户,按页分100页一次
*
* @author Dino
*
*/
private class GetMoreTask extends GenericTask {
@Override
protected TaskResult _doInBackground(TaskParams... params) {
Log.d(TAG, "load RetrieveTask");
List<com.ch_linghu.fanfoudroid.fanfou.User> usersList = null;
try {
usersList = getApi().getFollowersList(getUserId(),
getNextPage());
} catch (HttpException e) {
e.printStackTrace();
}
publishProgress(SimpleFeedback.calProgressBySize(40, 20, usersList));
ArrayList<User> users = new ArrayList<User>();
for (com.ch_linghu.fanfoudroid.fanfou.User user : usersList) {
if (isCancelled()) {
return TaskResult.CANCELLED;
}
users.add(User.create(user));
if (isCancelled()) {
return TaskResult.CANCELLED;
}
}
addUsers(users);
return TaskResult.OK;
}
}
private ITaskListener getMoreListener = new AbstractTaskAdapter() {
@Override
public String getName() {
return "getMore";
}
@Override
public void onPostExecute(GenericTask task, TaskResult result) {
super.onPostExecute(task, result);
draw();
loadMoreGIF.setVisibility(View.GONE);
}
};
public void doGetMore() {
Log.d(TAG, "Attempting getMore.");
if (mGetMoreTask != null
&& mGetMoreTask.getStatus() == GenericTask.Status.RUNNING) {
return;
} else {
mGetMoreTask = new GetMoreTask();
mGetMoreTask.setFeedback(mFeedback);
mGetMoreTask.setListener(getMoreListener);
mGetMoreTask.execute();
// Add Task to manager
taskManager.addTask(mGetMoreTask);
}
}
}