Android Open Source - AndroidShoppingList Shopping List Collection Adapter

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License

The source code is released under:

Apache License

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Java Source Code

/**
 * Copyright 2012 C. A. Fitzgerald/*from   w w  w . j  a v a 2s  .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.github.riotopsys.shoppinglist.adapter;

import java.util.Collections;
import java.util.List;

import android.content.Context;
import android.os.Bundle;
import android.os.Parcelable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;
import android.util.Log;

import com.github.riotopsys.shoppinglist.AppKeys;
import com.github.riotopsys.shoppinglist.comparator.ListNameComparator;
import com.github.riotopsys.shoppinglist.fragment.ShoppingListFragment;
import com.github.riotopsys.shoppinglist.model.ShoppingList;
import com.github.riotopsys.shoppinglist.model.ShoppingListCollection;

public class ShoppingListCollectionAdapter extends FragmentStatePagerAdapter {

  private static final String TAG = FragmentStatePagerAdapter.class.getSimpleName();

  private ShoppingListCollection mShoppingListCollection;
  private List<ShoppingList> mItems;

  private ListNameComparator mComparator = new ListNameComparator();

  public ShoppingListCollectionAdapter(Context ctx, FragmentManager fm, ShoppingListCollection collection) {
    super(fm);
    mShoppingListCollection = collection;
    mItems = mShoppingListCollection.getItems(ctx);
    Collections.sort(mItems, mComparator);
  }

  @Override
  public Fragment getItem(int position) {
    Fragment fragment = new ShoppingListFragment();
    Bundle args = new Bundle();
    args.putSerializable(AppKeys.LIST_KEY, mItems.get(position).getGuid());
    fragment.setArguments(args);
    return fragment;
  }

  @Override
  public CharSequence getPageTitle(int position) {
    String title = "";
    if (mItems.size() > 0 && mItems.size() > position ) {
      title = mItems.get(position).getName();
    }
    return title;
  }

  @Override
  public int getCount() {
    return mItems.size();
  }

  @Override
  public void notifyDataSetChanged() {
    throw new RuntimeException(TAG + " needs a context!");
  }

  public void notifyDataSetChanged(Context ctx) {
    mItems = mShoppingListCollection.getItems(ctx);
    Collections.sort(mItems, mComparator);
    super.notifyDataSetChanged();
  }

  public ShoppingList getList(int currentItem) {
    return mItems.get(currentItem);
  }

  @Override
  public int getItemPosition(Object object) {
    // TODO: something is very wrong here

    // ShoppingListFragment fragment = (ShoppingListFragment) object;
    // FragmentActivity activity = fragment.getActivity();
    // if (activity == null) {
    // return POSITION_NONE;
    // }
    // UUID uuid = (UUID)
    // fragment.getArguments().getSerializable(IntentKeys.LIST_KEY);
    // int index = mItems.indexOf(DataManager.getRecord(activity, uuid));
    // if (index != -1) {
    // return index;
    // }
    return POSITION_NONE;
  }

  @Override
  public Parcelable saveState() {
    try {
      return super.saveState();
    } catch (IllegalStateException e) {
      Log.e(TAG, "suppressing", e);
    }
    return null;
  }

  public int getPositionOf(ShoppingList shoppingList) {
    return mItems.indexOf(shoppingList);
  }

}

Java Source Code List