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/*
* Copyright (C) 2013 The CyanogenMod Project
*
* 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 org.cyanogenmod.wallpapers.photophase.adapters;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import org.cyanogenmod.wallpapers.photophase.R;
import org.cyanogenmod.wallpapers.photophase.model.Picture;
import org.cyanogenmod.wallpapers.photophase.widgets.PictureItemView;
import java.util.ArrayList;
import java.util.List;
/**
* An implementation of {@link ArrayAdapter} an album picture
*/
public class AlbumPictureAdapter extends ArrayAdapter<Picture> {
/**
* A class that conforms with the ViewHolder pattern to performance
* the list view rendering.
*/
private static class ViewHolder {
public ViewHolder() {
super();
}
PictureItemView mPictureItemView;
}
private List<Picture> mData = new ArrayList<Picture>();
private AdapterView<?> mParent;
/**
* Constructor of <code>AlbumPictureAdapter</code>.
*
* @param context The current context
* @param data The pictures data
*/
public AlbumPictureAdapter(Context context, List<Picture> data, AdapterView<?> parent) {
super(context, R.id.picture_thumbnail, data);
mData = data;
mParent = parent;
}
/**
* Method that dispose the elements of the adapter.
*/
public void dispose() {
clear();
this.mData = null;
}
@Override
public void notifyDataSetChanged() {
int start = mParent.getFirstVisiblePosition();
int last = mParent.getLastVisiblePosition();
for (int i = start; i <= last; i++) {
View v = mParent.getChildAt(i);
getView(i, v, mParent, false);
}
}
/**
* {@inheritDoc}
*/
@Override
public View getView(int position, View convertView, ViewGroup parent) {
return getView(position, convertView, parent, true);
}
/**
* Method that returns a view for a position
*
* @param position The position
* @param convertView A reusable view or null
* @param parent The parent of the view
* @param refreshIcon If the view should refresh its icon
* @return View The view
*/
private View getView(int position, View convertView, ViewGroup parent, boolean refreshIcon) {
final Picture picture = this.mData.get(position);
// Check to reuse view
View v = convertView;
if (v == null) {
//Create the view holder
LayoutInflater li =
(LayoutInflater)getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = li.inflate(R.layout.picture_item, parent, false);
// Create the controller for the view
ViewHolder viewHolder = new ViewHolder();
viewHolder.mPictureItemView = (PictureItemView)v.findViewById(R.id.picture);
viewHolder.mPictureItemView.setPicture(picture);
v.setTag(viewHolder);
}
// Retrieve the view holder
ViewHolder viewHolder = (ViewHolder)v.getTag();
// Retrieve the view holder and update the view
viewHolder.mPictureItemView.updateView(picture, refreshIcon);
// Return the view
return v;
}
}
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