UserAnswerListFragment.java

/*
    Copyright (C) 2013 Prasanna Thirumalai
    
    This file is part of StackX.

    StackX is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    StackX is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with StackX.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.prasanna.android.stacknetwork.fragment;

import java.util.ArrayList;

import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.text.Html;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;

import com.prasanna.android.stacknetwork.QuestionActivity;
import com.prasanna.android.stacknetwork.R;
import com.prasanna.android.stacknetwork.adapter.ItemListAdapter;
import com.prasanna.android.stacknetwork.adapter.ItemListAdapter.ListItemView;
import com.prasanna.android.stacknetwork.model.Answer;
import com.prasanna.android.stacknetwork.service.UserIntentService;
import com.prasanna.android.stacknetwork.utils.AppUtils;
import com.prasanna.android.stacknetwork.utils.DateTimeUtils;
import com.prasanna.android.stacknetwork.utils.OperatingSite;
import com.prasanna.android.stacknetwork.utils.StackXQuickActionMenu;
import com.prasanna.android.stacknetwork.utils.StringConstants;
import com.prasanna.android.views.QuickActionMenu;

public class UserAnswerListFragment extends ItemListFragment<Answer> implements ListItemView<Answer> {
  private static final String TAG = UserAnswerListFragment.class.getSimpleName();
  private static final int ANSWER_PREVIEW_LEN = 200;
  private static final String ANS_CONTNUES = "...";
  private static final String MULTIPLE_NEW_LINES_AT_END = "[\\s]+$";

  private int page = 1;
  private Intent intent;

  private static class ViewHolder {
    TextView itemTitle;
    TextView answerScore;
    TextView answerTime;
    TextView answerBody;
    ImageView quickActionMenuImg;
  }

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    if (itemsContainer == null) {
      itemsContainer = (LinearLayout) inflater.inflate(R.layout.list_view, null);
      itemListAdapter =
          new ItemListAdapter<Answer>(getActivity(), R.layout.answer_snippet, new ArrayList<Answer>(), this);

      itemsContainer.removeView(itemsContainer.findViewById(R.id.scoreAndAns));
    }
    return itemsContainer;
  }

  @Override
  protected void startIntentService() {
    showProgressBar();

    intent = getIntentForService(UserIntentService.class, null);
    if (intent != null) {
      intent.putExtra(StringConstants.ACTION, UserIntentService.GET_USER_ANSWERS);
      intent.putExtra(StringConstants.ME, getActivity().getIntent().getBooleanExtra(StringConstants.ME, false));
      intent.putExtra(StringConstants.USER_ID, getActivity().getIntent().getLongExtra(StringConstants.USER_ID, 0L));
      intent.putExtra(StringConstants.PAGE, page++);
      intent.putExtra(StringConstants.RESULT_RECEIVER, resultReceiver);

      startService(intent);
    }
  }

  @Override
  public String getReceiverExtraName() {
    return StringConstants.ANSWERS;
  }

  @Override
  public void onActivityCreated(Bundle savedInstanceState) {
    registerForContextMenu(getListView());

    super.onActivityCreated(savedInstanceState);

    registerForContextMenu(getListView());
  }

  @Override
  public void onResume() {
    super.onResume();

    if (itemListAdapter != null && itemListAdapter.getCount() == 0)
      startIntentService();
  }

  @Override
  protected String getLogTag() {
    return TAG;
  }

  @Override
  protected ViewGroup getParentLayout() {
    return itemsContainer;
  }

  @Override
  public View getView(final Answer answer, int position, View convertView, ViewGroup parent) {
    ViewHolder viewHolder;

    if (convertView == null) {
      convertView = getActivity().getLayoutInflater().inflate(R.layout.answer_snippet, null);
      viewHolder = new ViewHolder();
      viewHolder.itemTitle = (TextView) convertView.findViewById(R.id.itemTitle);
      viewHolder.answerScore = (TextView) convertView.findViewById(R.id.answerScore);
      viewHolder.answerTime = (TextView) convertView.findViewById(R.id.answerTime);
      viewHolder.answerBody = (TextView) convertView.findViewById(R.id.answerBodyPreview);
      viewHolder.quickActionMenuImg = (ImageView) convertView.findViewById(R.id.itemContextMenu);
      convertView.setTag(viewHolder);
    } else
      viewHolder = (ViewHolder) convertView.getTag();

    viewHolder.itemTitle.setText(Html.fromHtml(answer.title));
    viewHolder.answerScore.setText(AppUtils.formatNumber(answer.score));
    if (answer.accepted)
      viewHolder.answerScore.setTextColor(getResources().getColor(R.color.ledGreen));
    else
      viewHolder.answerScore.setTextColor(Color.DKGRAY);
    viewHolder.answerTime.setText(DateTimeUtils.getElapsedDurationSince(answer.creationDate));

    if (answer.body != null) {
      String answerBody = answer.body.replaceAll(MULTIPLE_NEW_LINES_AT_END, "");
      answerBody = answerBody.replaceAll("\\<*p>", "");

      if (answerBody.length() > ANSWER_PREVIEW_LEN) {
        answerBody = answerBody.substring(0, ANSWER_PREVIEW_LEN);
        viewHolder.answerBody.setText(Html.fromHtml(answerBody + ANS_CONTNUES));
      } else
        viewHolder.answerBody.setText(Html.fromHtml(answerBody));
    }

    setupQuickActionMenu(answer, viewHolder);
    return convertView;
  }

  /* Shouldn't I recycle quick action menu as well? Yes, but how? */
  private void setupQuickActionMenu(final Answer answer, final ViewHolder holder) {
    final QuickActionMenu quickActionMenu = initQuickActionMenu(answer);
    holder.quickActionMenuImg.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v) {
        quickActionMenu.show(v);
      }
    });
  }

  protected QuickActionMenu initQuickActionMenu(final Answer answer) {
    return new StackXQuickActionMenu(getActivity()).addSimilarQuestionsItem(answer.title)
        .addRelatedQuickActionItem(answer.questionId)
        .addEmailQuickActionItem(answer.title, AppUtils.createEmailBody(answer)).build();
  }

  @Override
  public void onListItemClick(ListView l, View v, int position, long id) {
    Intent intent = new Intent(getActivity(), QuestionActivity.class);
    intent.setAction(StringConstants.QUESTION_ID);
    intent.putExtra(StringConstants.QUESTION_ID, itemListAdapter.getItem(position).questionId);
    intent.putExtra(StringConstants.SITE, OperatingSite.getSite().apiSiteParameter);
    startActivity(intent);
  }
}