package com.ch_linghu.fanfoudroid;
import java.util.ArrayList;
import java.util.List;
import android.app.SearchManager;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.Log;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import com.ch_linghu.fanfoudroid.fanfou.SavedSearch;
import com.ch_linghu.fanfoudroid.fanfou.Trend;
import com.ch_linghu.fanfoudroid.http.HttpException;
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.BaseActivity;
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.NavBar;
import com.ch_linghu.fanfoudroid.util.TextHelper;
import com.commonsware.cwac.merge.MergeAdapter;
import com.ch_linghu.fanfoudroid.R;
public class SearchActivity extends BaseActivity {
private static final String TAG = SearchActivity.class.getSimpleName();
private static final int LOADING = 1;
private static final int NETWORKERROR = 2;
private static final int SUCCESS = 3;
private EditText mSearchEdit;
private ListView mSearchSectionList;
private TextView trendsTitle;
private TextView savedSearchTitle;
private MergeAdapter mSearchSectionAdapter;
private SearchAdapter trendsAdapter;
private SearchAdapter savedSearchesAdapter;
private ArrayList<SearchItem> trends;
private ArrayList<SearchItem> savedSearch;
private String initialQuery;
private NavBar mNavbar;
private Feedback mFeedback;
private GenericTask trendsAndSavedSearchesTask;
private TaskListener trendsAndSavedSearchesTaskListener = new TaskAdapter() {
@Override
public String getName() {
return "trendsAndSavedSearchesTask";
}
@Override
public void onPreExecute(GenericTask task) {
}
@Override
public void onPostExecute(GenericTask task, TaskResult result) {
if (result == TaskResult.OK) {
refreshSearchSectionList(SearchActivity.SUCCESS);
} else if (result == TaskResult.IO_ERROR) {
refreshSearchSectionList(SearchActivity.NETWORKERROR);
Toast.makeText(
SearchActivity.this,
getResources()
.getString(
R.string.login_status_network_or_connection_error),
Toast.LENGTH_SHORT).show();
}
}
};
@Override
protected boolean _onCreate(Bundle savedInstanceState) {
Log.d(TAG, "onCreate()...");
if (super._onCreate(savedInstanceState)) {
setContentView(R.layout.search);
mNavbar = new NavBar(NavBar.HEADER_STYLE_SEARCH, this);
mFeedback = FeedbackFactory.create(this, FeedbackType.PROGRESS);
initView();
initSearchSectionList();
refreshSearchSectionList(SearchActivity.LOADING);
doGetSavedSearches();
return true;
} else {
return false;
}
}
private void initView() {
mSearchEdit = (EditText) findViewById(R.id.search_edit);
mSearchEdit.setOnKeyListener(enterKeyHandler);
trendsTitle = (TextView) getLayoutInflater().inflate(
R.layout.search_section_header, null);
trendsTitle.setText(getResources().getString(R.string.trends_title));
savedSearchTitle = (TextView) getLayoutInflater().inflate(
R.layout.search_section_header, null);
savedSearchTitle.setText(getResources().getString(
R.string.saved_search_title));
mSearchSectionAdapter = new MergeAdapter();
mSearchSectionList = (ListView) findViewById(R.id.search_section_list);
mNavbar.getSearchButton().setOnClickListener(
new View.OnClickListener() {
public void onClick(View v) {
initialQuery = mSearchEdit.getText().toString();
startSearch();
}
});
}
@Override
protected void onResume() {
Log.d(TAG, "onResume()...");
super.onResume();
}
private void doGetSavedSearches() {
if (trendsAndSavedSearchesTask != null
&& trendsAndSavedSearchesTask.getStatus() == GenericTask.Status.RUNNING) {
return;
} else {
trendsAndSavedSearchesTask = new TrendsAndSavedSearchesTask();
trendsAndSavedSearchesTask
.setListener(trendsAndSavedSearchesTaskListener);
trendsAndSavedSearchesTask.setFeedback(mFeedback);
trendsAndSavedSearchesTask.execute();
}
}
private void initSearchSectionList() {
trends = new ArrayList<SearchItem>();
savedSearch = new ArrayList<SearchItem>();
trendsAdapter = new SearchAdapter(this);
savedSearchesAdapter = new SearchAdapter(this);
mSearchSectionAdapter.addView(savedSearchTitle);
mSearchSectionAdapter.addAdapter(savedSearchesAdapter);
mSearchSectionAdapter.addView(trendsTitle);
mSearchSectionAdapter.addAdapter(trendsAdapter);
mSearchSectionList.setAdapter(mSearchSectionAdapter);
}
/**
* 辅助计算位置的类
*
* @author jmx
*
*/
class PositionHelper {
/**
* 返回指定位置属于哪一个小节
*
* @param position
* 绝对位置
* @return 小节的序号，0是第一小节，1是第二小节, -1为无效位置
*/
public int getSectionIndex(int position) {
int[] contentLength = new int[2];
contentLength[0] = savedSearchesAdapter.getCount();
contentLength[1] = trendsAdapter.getCount();
if (position > 0 && position < contentLength[0] + 1) {
return 0;
} else if (position > contentLength[0] + 1
&& position < (contentLength[0] + contentLength[1] + 1) + 1) {
return 1;
} else {
return -1;
}
}
/**
* 返回指定位置在自己所在小节的相对位置
*
* @param position
* 绝对位置
* @return 所在小节的相对位置，-1为无效位置
*/
public int getRelativePostion(int position) {
int[] contentLength = new int[2];
contentLength[0] = savedSearchesAdapter.getCount();
contentLength[1] = trendsAdapter.getCount();
int sectionIndex = getSectionIndex(position);
int offset = 0;
for (int i = 0; i < sectionIndex; ++i) {
offset += contentLength[i] + 1;
}
return position - offset - 1;
}
}
/**
* flag: loading;network error;success
*/
PositionHelper pos_helper = new PositionHelper();
private void refreshSearchSectionList(int flag) {
AdapterView.OnItemClickListener searchSectionListListener = new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view,
int position, long id) {
MergeAdapter adapter = (MergeAdapter) (adapterView.getAdapter());
SearchAdapter subAdapter = (SearchAdapter) adapter
.getAdapter(position);
// 计算针对subAdapter中的相对位置
int relativePos = pos_helper.getRelativePostion(position);
SearchItem item = (SearchItem) (subAdapter.getItem(relativePos));
initialQuery = item.query;
startSearch();
}
};
if (flag == SearchActivity.LOADING) {
mSearchSectionList.setOnItemClickListener(null);
savedSearch.clear();
trends.clear();
savedSearchesAdapter.refresh(getString(R.string.search_loading));
trendsAdapter.refresh(getString(R.string.search_loading));
} else if (flag == SearchActivity.NETWORKERROR) {
mSearchSectionList.setOnItemClickListener(null);
savedSearch.clear();
trends.clear();
savedSearchesAdapter
.refresh(getString(R.string.login_status_network_or_connection_error));
trendsAdapter
.refresh(getString(R.string.login_status_network_or_connection_error));
} else {
savedSearchesAdapter.refresh(savedSearch);
trendsAdapter.refresh(trends);
}
if (flag == SearchActivity.SUCCESS) {
mSearchSectionList
.setOnItemClickListener(searchSectionListListener);
}
}
protected boolean startSearch() {
if (!TextUtils.isEmpty(initialQuery)) {
// 以下这个方法在7可用，在8就报空指针
// triggerSearch(initialQuery, null);
Intent i = new Intent(this, SearchResultActivity.class);
i.putExtra(SearchManager.QUERY, initialQuery);
startActivity(i);
} else if (TextUtils.isEmpty(initialQuery)) {
Toast.makeText(this,
getResources().getString(R.string.search_box_null),
Toast.LENGTH_SHORT).show();
return false;
}
return false;
}
// 搜索框回车键判断
private View.OnKeyListener enterKeyHandler = new View.OnKeyListener() {
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_ENTER
|| keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
if (event.getAction() == KeyEvent.ACTION_UP) {
initialQuery = mSearchEdit.getText().toString();
startSearch();
}
return true;
}
return false;
}
};
private class TrendsAndSavedSearchesTask extends GenericTask {
Trend[] trendsList;
List<SavedSearch> savedSearchsList;
@Override
protected TaskResult _doInBackground(TaskParams... params) {
try {
trendsList = getApi().getTrends().getTrends();
savedSearchsList = getApi().getSavedSearches();
} catch (HttpException e) {
Log.e(TAG, e.getMessage(), e);
return TaskResult.IO_ERROR;
}
trends.clear();
savedSearch.clear();
for (int i = 0; i < trendsList.length; i++) {
SearchItem item = new SearchItem();
item.name = trendsList[i].getName();
item.query = trendsList[i].getQuery();
trends.add(item);
}
for (int i = 0; i < savedSearchsList.size(); i++) {
SearchItem item = new SearchItem();
item.name = savedSearchsList.get(i).getName();
item.query = savedSearchsList.get(i).getQuery();
savedSearch.add(item);
}
return TaskResult.OK;
}
}
}
class SearchItem {
public String name;
public String query;
}
class SearchAdapter extends BaseAdapter {
protected ArrayList<SearchItem> mSearchList;
private Context mContext;
protected LayoutInflater mInflater;
protected StringBuilder mMetaBuilder;
public SearchAdapter(Context context) {
mSearchList = new ArrayList<SearchItem>();
mContext = context;
mInflater = LayoutInflater.from(mContext);
mMetaBuilder = new StringBuilder();
}
public SearchAdapter(Context context, String prompt) {
this(context);
refresh(prompt);
}
public void refresh(ArrayList<SearchItem> searchList) {
mSearchList = searchList;
notifyDataSetChanged();
}
public void refresh(String prompt) {
SearchItem item = new SearchItem();
item.name = prompt;
item.query = null;
mSearchList.clear();
mSearchList.add(item);
notifyDataSetChanged();
}
@Override
public int getCount() {
return mSearchList.size();
}
@Override
public Object getItem(int position) {
return mSearchList.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view;
if (convertView == null) {
view = mInflater.inflate(R.layout.search_section_view, parent,
false);
TextView text = (TextView) view
.findViewById(R.id.search_section_text);
view.setTag(text);
} else {
view = convertView;
}
TextView text = (TextView) view.getTag();
SearchItem item = mSearchList.get(position);
text.setText(item.name);
return view;
}
}