AbstractQuestionListFragment.java

/*
    Copyright (C) 2014 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.Context;
import android.content.Intent;
import android.os.Bundle;
import android.text.Html;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
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.ListItemView;
import com.prasanna.android.stacknetwork.model.Question;
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.stacknetwork.utils.TagsViewBuilder;
import com.prasanna.android.views.QuickActionMenu;

public abstract class AbstractQuestionListFragment extends ItemListFragment<Question> implements ListItemView<Question> {
  private final Bundle bundle = new Bundle();

  static class QuestionViewHolder {
    LinearLayout tagsLayout;
    TextView title;
    TextView score;
    TextView answerCount;
    TextView views;
    TextView owner;
    TextView bountyAmount;
    ArrayList<TextView> tagViews;
    TextView answerCountAnswered;
    ImageView quickActionImg;
  }

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

  @Override
  public View getView(Question item, int position, View convertView, ViewGroup parent) {
    return buildView(convertView, getActivity(), item);
  }

  @Override
  public void onListItemClick(ListView l, View v, int position, long id) {
    if (itemListAdapter != null && itemListAdapter.getCount() > position) {
      Intent displayQuestionIntent = new Intent(getActivity(), QuestionActivity.class);
      displayQuestionIntent.setAction(StringConstants.QUESTION);
      displayQuestionIntent.putExtra(StringConstants.QUESTION, itemListAdapter.getItem(position));
      displayQuestionIntent.putExtra(StringConstants.CACHED, false);
      displayQuestionIntent.putExtra(StringConstants.SITE, OperatingSite.getSite().apiSiteParameter);
      startActivity(displayQuestionIntent);
    }
  }

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

  private View buildView(View convertView, final Context context, final Question question) {
    FrameLayout questionRowLayout = (FrameLayout) convertView;
    QuestionViewHolder holder;

    if (questionRowLayout == null) {
      holder = new QuestionViewHolder();

      questionRowLayout =
          (FrameLayout) getActivity().getLayoutInflater().inflate(R.layout.question_snippet_layout, null);
      holder.tagsLayout = (LinearLayout) questionRowLayout.findViewById(R.id.questionSnippetTags);
      holder.score = (TextView) questionRowLayout.findViewById(R.id.score);
      holder.answerCount = (TextView) questionRowLayout.findViewById(R.id.answerCount);
      holder.answerCountAnswered = (TextView) questionRowLayout.findViewById(R.id.answerCountAnswered);
      holder.title = (TextView) questionRowLayout.findViewById(R.id.itemTitle);
      holder.views = (TextView) questionRowLayout.findViewById(R.id.questionViewsValue);
      holder.owner = (TextView) questionRowLayout.findViewById(R.id.questionOwner);
      holder.bountyAmount = (TextView) questionRowLayout.findViewById(R.id.itemBountyAmount);
      holder.quickActionImg = (ImageView) questionRowLayout.findViewById(R.id.itemContextMenu);
      questionRowLayout.setTag(holder);
    } else holder = (QuestionViewHolder) questionRowLayout.getTag();

    if (question.bountyAmount > 0) {
      holder.bountyAmount.setText("+" + String.valueOf(question.bountyAmount));
      holder.bountyAmount.setVisibility(View.VISIBLE);
    }

    questionRowLayout.setId((int) question.id);
    setValuesForQuestionView(holder, question);
    buildTagsView(question, holder);
    setupQuickActionMenu(question, holder);

    return questionRowLayout;
  }

  protected void buildTagsView(final Question question, final QuestionViewHolder holder) {
    TagsViewBuilder.buildView(getActivity(), holder.tagsLayout, question.tags);
  }

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

  protected QuickActionMenu initQuickActionMenu(final Question question) {
    StackXQuickActionMenu quickActionMenu = new StackXQuickActionMenu(getActivity());
    quickActionMenu.addUserProfileItem(question.owner.id, Html.fromHtml(question.owner.displayName).toString());
    return quickActionMenu.addSimilarQuestionsItem(question.title).addRelatedQuickActionItem(question.id)
        .addEmailQuickActionItem(question.title, question.body).build();
  }

  protected void setValuesForQuestionView(QuestionViewHolder holder, Question question) {
    holder.score.setText(AppUtils.formatNumber(question.score));

    if (question.hasAcceptedAnswer) {
      holder.answerCountAnswered.setText(AppUtils.formatNumber(question.answerCount));
      holder.answerCountAnswered.setVisibility(View.VISIBLE);
      holder.answerCount.setVisibility(View.GONE);
    } else {
      holder.answerCount.setText(AppUtils.formatNumber(question.answerCount));
      holder.answerCount.setVisibility(View.VISIBLE);
      holder.answerCountAnswered.setVisibility(View.GONE);
    }

    holder.title.setText(Html.fromHtml(question.title));
    holder.views.setText("Views:" + AppUtils.formatNumber(question.viewCount));

    if (question.owner.displayName != null) {
      holder.owner.setText(DateTimeUtils.getElapsedDurationSince(question.creationDate) + " by "
          + Html.fromHtml(question.owner.displayName));
    }
  }

  public Bundle getBundle() {
    return bundle;
  }
}