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package cn.itcast.douban;
import java.io.IOException;
import java.net.MalformedURLException;
import java.util.List;
import com.google.gdata.data.douban.NoteEntry;
import com.google.gdata.data.douban.NoteFeed;
import com.google.gdata.util.ServiceException;
import android.content.Intent;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.AsyncTask;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
public class MyNoteActivity extends BaseActivity {
 private ListView notelistview;
 private int startindex;
 private int maxresult;
 private TextView tv_current_page;
 private List<NoteEntry> noteEntries;
 private NoteAdapter adapter;
 private EditText et_page_number;
 private boolean isloading;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  startindex = 1;
  maxresult = 10;
 }
 @Override
 public void findView() {
  setContentView(R.layout.my_note);
  notelistview = (ListView) findViewById(R.id.notelistview);
  tv_current_page = (TextView) findViewById(R.id.tv_current_page);
  et_page_number = (EditText) findViewById(R.id.et_page_number);
 }
 @Override
 public void setupView() {
  notelistview.setDivider(new ColorDrawable(Color.TRANSPARENT));
  notelistview.setDividerHeight(5);
  // 注册上下文菜单
  registerForContextMenu(notelistview);
  fillData();
  notelistview.setOnItemClickListener(new OnItemClickListener() {
   public void onItemClick(AdapterView<?> parent, View view,
     int position, long id) {
    NoteEntry ne = (NoteEntry) notelistview
      .getItemAtPosition(position);
    MyApplication myapp = (MyApplication) getApplication();
    myapp.ne = ne;
    Intent intent = new Intent(getApplicationContext(),
      NoteDetailActiviy.class);
    startActivity(intent);
   }
  });
 }
 private void fillData() {
  if (isloading)
   return;
  new AsyncTask<Void, Void, NoteFeed>() {
   @Override
   protected void onPreExecute() {
    isloading = true;
    showLoading();
    super.onPreExecute();
   }
   @Override
   protected void onPostExecute(NoteFeed result) {
    if (result != null) {
     noteEntries = result.getEntries();
     
     adapter = new NoteAdapter();
     notelistview.setAdapter(adapter);
     tv_current_page.setText(getPageNumber());
     isloading = false;
    }else{
     Toast.makeText(getApplicationContext(), "获取数据失败", 0).show();
    }
    hideLoading();
    super.onPostExecute(result);
   }
   @Override
   protected NoteFeed doInBackground(Void... params) {
    try {
     String uid = myService.getAuthorizedUser().getUid();
     NoteFeed nf = myService.getUserNotes(uid, startindex,maxresult);
     return nf;
    } catch (Exception e) {
     e.printStackTrace();
     return null;
    }
   }
  }.execute();
 }
 private class NoteAdapter extends BaseAdapter {
  public void removeNoteEntry(NoteEntry ne) {
   noteEntries.remove(ne);
  }
  public int getCount() {
   return noteEntries.size();
  }
  public Object getItem(int position) {
   return noteEntries.get(position);
  }
  public long getItemId(int position) {
   return position;
  }
  public View getView(int position, View convertView, ViewGroup parent) {
   View view;
   ViewHolder holder;
   if (convertView == null) {
    view = View.inflate(getApplicationContext(), R.layout.fav_item,null);
    holder = new ViewHolder();
    holder.note_title = (TextView) view
      .findViewById(R.id.fav_title);
    view.setTag(holder);
   } else {
    view = convertView;
    holder = (ViewHolder) view.getTag();
   }
   holder.note_title.setText(noteEntries.get(position).getTitle()
     .getPlainText());
   return view;
  }
 }
 static class ViewHolder {
  TextView note_title;
 }
 private String getPageNumber() {
  int page = startindex / maxresult + 1;
  return "当前页码:" + page;
 }
 public void prePage(View view) {
  startindex -= maxresult;
  if (startindex < 1) {
   startindex = 1;
   Toast.makeText(this, "已经是第一页了", 0).show();
   return;
  }
  fillData();
 }
 public void nextPage(View view) {
  startindex += maxresult;
  fillData();
 }
 public void jump(View view) {
  String number = et_page_number.getText().toString().trim();
  if (TextUtils.isEmpty(number)) {
   Toast.makeText(this, "页码不能为空", 0).show();
   return;
  }
  int page = Integer.parseInt(number);
  if (page <= 0) {
   Toast.makeText(this, "页码不合法", 0).show();
   return;
  }
  startindex = (page - 1) * maxresult + 1;
  fillData();
 }
 @Override
 public void onCreateContextMenu(ContextMenu menu, View v,
   ContextMenuInfo menuInfo) {
  super.onCreateContextMenu(menu, v, menuInfo);
  MenuInflater inflater = getMenuInflater();
  inflater.inflate(R.menu.context_menu, menu);
 }
 @Override
 public boolean onContextItemSelected(MenuItem item) {
  AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
  int position = (int) info.id;
  NoteEntry ne = (NoteEntry) notelistview.getItemAtPosition(position);
  switch (item.getItemId()) {
  case R.id.item_addnote:
   addNote(ne);
   return true;
  case R.id.item_delete:
   deleteNote(ne);
   return true;
  case R.id.item_update:
   updateNote(ne);
   return true;
  default:
   return super.onContextItemSelected(item);
  }
 }
 /**
  * 添加一条指定的日记
  *
  * @param ne
  */
 private void addNote(NoteEntry ne) {
  Intent intent = new Intent(this, NoteEditActivity.class);
  intent.putExtra("type", "add");
  // startActivity(intent);
  startActivityForResult(intent, 0);
 }
 /**
  * 更新一条指定的日记
  *
  * @param ne
  */
 private void updateNote(NoteEntry ne) {
  Intent intent = new Intent(this, NoteEditActivity.class);
  intent.putExtra("type", "update");
  MyApplication myapp = (MyApplication) getApplication();
  myapp.ne = ne;
  // startActivity(intent);
  startActivityForResult(intent, 0);
 }
 @Override
 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
  if (data != null) {
   boolean result = data.getBooleanExtra("result", false);
   if (result) {
    fillData();
   }
  }
  super.onActivityResult(requestCode, resultCode, data);
 }
 /**
  * 删除一条指定的日记
  *
  * @param ne
  */
 private void deleteNote(final NoteEntry ne) {
  new AsyncTask<Void, Void, Boolean>() {
   @Override
   protected void onPreExecute() {
    super.onPreExecute();
    showLoading();
   }
   @Override
   protected void onPostExecute(Boolean result) {
    super.onPostExecute(result);
    hideLoading();
    /*
     * if(result){ fillData(); }
     */
    if (result) {
     adapter.removeNoteEntry(ne);
     adapter.notifyDataSetChanged();
    }
   }
   @Override
   protected Boolean doInBackground(Void... params) {
    try {
     myService.deleteNote(ne);
     return true;
    } catch (Exception e) {
     e.printStackTrace();
     return false;
    }
   }
  }.execute();
 }
}