Android Open Source - Todoist-for-Android Separated List Adapter

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License

The source code is released under:

GNU General Public License

Java Source Code

/*    
  This file is part of Todoist for Android?.
/*from  ww  w  .  j av a  2 s .c  o  m*/
    Todoist for Android? 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.

    Todoist for Android? 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 Todoist for Android?.  If not, see <http://www.gnu.org/licenses/>.
    
    This file incorporates work covered by the following copyright and  
   permission notice:
   
   Copyright [2010] pskink <pskink@gmail.com>
   Copyright [2010] ys1382 <ys1382@gmail.com>
   Copyright [2010] JonTheNiceGuy <JonTheNiceGuy@gmail.com>

     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
     You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

     Unless required by applicable law or agreed to in writing, software
     distributed under the License is distributed on an "AS IS" BASIS,
     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     See the License for the specific language governing permissions and
     limitations under the License.
*/

package com.android.applications.todoist.containers;

import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.Map;

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Adapter;
import android.widget.BaseAdapter;
import android.widget.EditText;

public class SeparatedListAdapter extends BaseAdapter {

  public final Map<String,Adapter> sections = new LinkedHashMap<String,Adapter>();
  public final ArrayList<View> heads;
  public final static int TYPE_SECTION_HEADER = 0;
  public Context context;
  
  public SeparatedListAdapter(Context context) {
    this.context = context;
    heads = new ArrayList<View>();
  }

  public void addSection(String section, Adapter adapter) {
    EditText newText = new EditText(this.context);
    newText.setText(section);
    this.heads.add(newText);
    this.sections.put(section, adapter);
  }

  public Object getItem(int position) {
    for(Object section : this.sections.keySet()) {
      Adapter adapter = sections.get(section);
      int size = adapter.getCount() + 1;

      // check if position inside this section
      if(position == 0) return section;
      if(position < size) return adapter.getItem(position - 1);

      // otherwise jump into next section
      position -= size;
    }
    return null;
  }

  public int getCount() {
    // total together all sections, plus one for each section header
    int total = 0;
    for(Adapter adapter : this.sections.values())
      total += adapter.getCount() + 1;
    return total;
  }

  public int getViewTypeCount() {
    // assume that headers count as one, then total all sections
    int total = 1;
    for(Adapter adapter : this.sections.values())
      total += adapter.getViewTypeCount();
    return total;
  }

  public int getItemViewType(int position) {
    int type = 1;
    for(Object section : this.sections.keySet()) {
      Adapter adapter = sections.get(section);
      int size = adapter.getCount() + 1;

      // check if position inside this section
      if(position == 0) return TYPE_SECTION_HEADER;
      if(position < size) return type + adapter.getItemViewType(position - 1);

      // otherwise jump into next section
      position -= size;
      type += adapter.getViewTypeCount();
    }
    return -1;
  }

  public boolean areAllItemsSelectable() {
    return false;
  }

  public boolean isEnabled(int position) {
    return (getItemViewType(position) != TYPE_SECTION_HEADER);
  }

  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
    int sectionnum = 0;
    for(Object section : this.sections.keySet()) {
      Adapter adapter = sections.get(section);
      int size = adapter.getCount() + 1;

      // check if position inside this section
      if(position == 0) 
      {
        return heads.get(sectionnum);
      }
      if(position < size) return adapter.getView(position - 1, convertView, parent);

      // otherwise jump into next section
      position -= size;
      sectionnum++;
    }
    return null;
  }

  @Override
  public long getItemId(int position) {
    return position;
  }

  
}

Java Source Code List

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