package com.ch_linghu.fanfoudroid;
import java.util.ArrayList;
import java.util.List;
import android.content.Intent;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.widget.ListView;
import android.widget.ProgressBar;
import com.ch_linghu.fanfoudroid.data.Tweet;
import com.ch_linghu.fanfoudroid.fanfou.Paging;
import com.ch_linghu.fanfoudroid.fanfou.User;
import com.ch_linghu.fanfoudroid.http.HttpException;
import com.ch_linghu.fanfoudroid.http.HttpRefusedException;
import com.ch_linghu.fanfoudroid.task.GenericTask;
import com.ch_linghu.fanfoudroid.task.TaskAdapter;
import com.ch_linghu.fanfoudroid.task.TaskListener;
import com.ch_linghu.fanfoudroid.task.TaskParams;
import com.ch_linghu.fanfoudroid.task.TaskResult;
import com.ch_linghu.fanfoudroid.ui.base.TwitterListBaseActivity;
import com.ch_linghu.fanfoudroid.ui.module.Feedback;
import com.ch_linghu.fanfoudroid.ui.module.FeedbackFactory;
import com.ch_linghu.fanfoudroid.ui.module.FeedbackFactory.FeedbackType;
import com.ch_linghu.fanfoudroid.ui.module.TweetArrayAdapter;
import com.ch_linghu.fanfoudroid.R;
import com.markupartist.android.widget.PullToRefreshListView;
import com.markupartist.android.widget.PullToRefreshListView.OnRefreshListener;
public class UserTimelineActivity extends TwitterListBaseActivity {
private static class State {
State(UserTimelineActivity activity) {
mTweets = activity.mTweets;
mMaxId = activity.mMaxId;
}
public ArrayList<Tweet> mTweets;
public String mMaxId;
}
private static final String TAG = UserTimelineActivity.class
.getSimpleName();
private Feedback mFeedback;
private static final String EXTRA_USERID = "userID";
private static final String EXTRA_NAME_SHOW = "showName";
private static final String SIS_RUNNING_KEY = "running";
private static final String LAUNCH_ACTION = "com.ch_linghu.fanfoudroid.USERTIMELINE";
public static Intent createIntent(String userID, String showName) {
Intent intent = new Intent(LAUNCH_ACTION);
intent.putExtra(EXTRA_USERID, userID);
intent.putExtra(EXTRA_NAME_SHOW, showName);
return intent;
}
// State.
private User mUser;
private String mUserID;
private String mShowName;
private ArrayList<Tweet> mTweets = new ArrayList<Tweet>();
private String mMaxId = "";
// Views.
private View footerView;
private PullToRefreshListView mTweetList;
private ProgressBar loadMoreGIF;
private TweetArrayAdapter mAdapter;
// 记录服务器拒绝访问的信息
private String msg;
private static final int LOADINGFLAG = 1;
private static final int SUCCESSFLAG = 2;
private static final int NETWORKERRORFLAG = 3;
private static final int AUTHERRORFLAG = 4;
// Tasks.
private GenericTask mRetrieveTask;
private GenericTask mLoadMoreTask;
private TaskListener mRetrieveTaskListener = new TaskAdapter() {
@Override
public void onPreExecute(GenericTask task) {
onRetrieveBegin();
}
@Override
public void onPostExecute(GenericTask task, TaskResult result) {
mTweetList.onRefreshComplete();
if (result == TaskResult.AUTH_ERROR) {
mFeedback.failed("登录失败, 请重新登录.");
return;
} else if (result == TaskResult.OK) {
draw();
goTop();
} else if (result == TaskResult.IO_ERROR) {
mFeedback.failed("更新失败.");
}
mFeedback.success("");
}
@Override
public String getName() {
return "UserTimelineRetrieve";
}
};
private TaskListener mLoadMoreTaskListener = new TaskAdapter() {
@Override
public void onPreExecute(GenericTask task) {
loadMoreGIF.setVisibility(View.VISIBLE);
onLoadMoreBegin();
}
@Override
public void onPostExecute(GenericTask task, TaskResult result) {
loadMoreGIF.setVisibility(View.GONE);
if (result == TaskResult.AUTH_ERROR) {
logout();
} else if (result == TaskResult.OK) {
mFeedback.success("");
draw();
}
}
@Override
public String getName() {
return "UserTimelineLoadMoreTask";
}
};
@Override
protected boolean _onCreate(Bundle savedInstanceState) {
Log.d(TAG, "_onCreate()...");
if (super._onCreate(savedInstanceState)) {
mFeedback = FeedbackFactory.create(this, FeedbackType.PROGRESS);
Intent intent = getIntent();
// get user id
mUserID = intent.getStringExtra(EXTRA_USERID);
// show username in title
mShowName = intent.getStringExtra(EXTRA_NAME_SHOW);
// Set header title
mNavbar.setHeaderTitle("@" + mShowName);
boolean wasRunning = isTrue(savedInstanceState, SIS_RUNNING_KEY);
State state = (State) getLastNonConfigurationInstance();
if (state != null) {
// 此处要求mTweets不为空，最好确保profile页面消息为0时不能进入这个页面
mTweets = state.mTweets;
mMaxId = state.mMaxId;
if (!mTweets.isEmpty() && !wasRunning) {
draw();
}
} else {
doRetrieve();
}
return true;
} else {
return false;
}
}
@Override
protected void onResume() {
super.onResume();
checkIsLogedIn();
}
@Override
public Object onRetainNonConfigurationInstance() {
return createState();
}
private synchronized State createState() {
return new State(this);
}
@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 onDestroy() {
Log.d(TAG, "onDestroy.");
if (mRetrieveTask != null
&& mRetrieveTask.getStatus() == GenericTask.Status.RUNNING) {
mRetrieveTask.cancel(true);
}
if (mLoadMoreTask != null
&& mLoadMoreTask.getStatus() == GenericTask.Status.RUNNING) {
mLoadMoreTask.cancel(true);
}
super.onDestroy();
}
@Override
protected void draw() {
mAdapter.refresh(mTweets);
}
public void goTop() {
Log.d(TAG, "goTop.");
mTweetList.setSelection(1);
}
public void doRetrieve() {
Log.d(TAG, "Attempting retrieve.");
if (mRetrieveTask != null
&& mRetrieveTask.getStatus() == GenericTask.Status.RUNNING) {
return;
} else {
mRetrieveTask = new UserTimelineRetrieveTask();
mRetrieveTask.setListener(mRetrieveTaskListener);
mRetrieveTask.execute();
}
}
private void doLoadMore() {
Log.d(TAG, "Attempting load more.");
if (mLoadMoreTask != null
&& mLoadMoreTask.getStatus() == GenericTask.Status.RUNNING) {
return;
} else {
mLoadMoreTask = new UserTimelineLoadMoreTask();
mLoadMoreTask.setListener(mLoadMoreTaskListener);
mLoadMoreTask.execute();
}
}
private void onRetrieveBegin() {
mFeedback.start("");
mTweetList.prepareForRefresh();
// 更新查询状态显示
}
private void onLoadMoreBegin() {
mFeedback.start("");
}
private class UserTimelineRetrieveTask extends GenericTask {
@Override
protected TaskResult _doInBackground(TaskParams... params) {
List<com.ch_linghu.fanfoudroid.fanfou.Status> statusList;
try {
statusList = getApi().getUserTimeline(mUserID);
mUser = getApi().showUser(mUserID);
mFeedback.update(60);
} catch (HttpException e) {
Log.e(TAG, e.getMessage(), e);
Throwable cause = e.getCause();
if (cause instanceof HttpRefusedException) {
// AUTH ERROR
msg = ((HttpRefusedException) cause).getError()
.getMessage();
return TaskResult.AUTH_ERROR;
} else {
return TaskResult.IO_ERROR;
}
}
mFeedback.update(100 - (int) Math.floor(statusList.size() * 2)); // 60~100
mTweets.clear();
for (com.ch_linghu.fanfoudroid.fanfou.Status status : statusList) {
if (isCancelled()) {
return TaskResult.CANCELLED;
}
Tweet tweet;
tweet = Tweet.create(status);
mMaxId = tweet.id;
mTweets.add(tweet);
if (isCancelled()) {
return TaskResult.CANCELLED;
}
}
if (isCancelled()) {
return TaskResult.CANCELLED;
}
return TaskResult.OK;
}
}
private class UserTimelineLoadMoreTask extends GenericTask {
@Override
protected TaskResult _doInBackground(TaskParams... params) {
List<com.ch_linghu.fanfoudroid.fanfou.Status> statusList;
try {
Paging paging = new Paging();
if (!TextUtils.isEmpty(mMaxId)) {
paging.setMaxId(mMaxId);
}
statusList = getApi().getUserTimeline(mUserID, paging);
} catch (HttpException e) {
Log.e(TAG, e.getMessage(), e);
Throwable cause = e.getCause();
if (cause instanceof HttpRefusedException) {
// AUTH ERROR
msg = ((HttpRefusedException) cause).getError()
.getMessage();
return TaskResult.AUTH_ERROR;
} else {
return TaskResult.IO_ERROR;
}
}
for (com.ch_linghu.fanfoudroid.fanfou.Status status : statusList) {
if (isCancelled()) {
return TaskResult.CANCELLED;
}
Tweet tweet;
tweet = Tweet.create(status);
mMaxId = tweet.id;
mTweets.add(tweet);
}
if (isCancelled()) {
return TaskResult.CANCELLED;
}
if (isCancelled()) {
return TaskResult.CANCELLED;
}
return TaskResult.OK;
}
}
public void doGetMore() {
doLoadMore();
}
@Override
protected String getActivityTitle() {
return "@" + mShowName;
}
@Override
protected Tweet getContextItemTweet(int position) {
if (position >= 1 && position <= mAdapter.getCount()) {
return (Tweet) mAdapter.getItem(position - 1);
} else {
return null;
}
}
@Override
protected int getLayoutId() {
return R.layout.user_timeline;
}
@Override
protected com.ch_linghu.fanfoudroid.ui.module.TweetAdapter getTweetAdapter() {
return mAdapter;
}
@Override
protected ListView getTweetList() {
return mTweetList;
}
@Override
protected void setupState() {
mTweets = new ArrayList<Tweet>();
mAdapter = new TweetArrayAdapter(this);
mTweetList = (PullToRefreshListView) findViewById(R.id.tweet_list);
mTweetList.setAdapter(mAdapter);
mTweetList.setOnRefreshListener(new OnRefreshListener(){
@Override
public void onRefresh(){
doRetrieve();
}
});
// Add Footer to ListView
footerView = (View)View.inflate(this,
R.layout.listview_footer, null);
mTweetList.addFooterView(footerView);
loadMoreGIF = (ProgressBar) findViewById(R.id.rectangleProgressBar);
}
@Override
protected void updateTweet(Tweet tweet) {
// 该方法作用？
}
@Override
protected boolean useBasicMenu() {
return true;
}
@Override
protected void specialItemClicked(int position) {
// 注意 mTweetAdapter.getCount 和 mTweetList.getCount的区别
// 前者仅包含数据的数量（不包括foot和head），后者包含foot和head
// 因此在同时存在foot和head的情况下，list.count = adapter.count + 2
if (position == 0) {
doRetrieve();
} else if (position == mTweetList.getCount() - 1) {
// 最后一个Item(footer)
doGetMore();
}
}
}