/*
 * FileName: BaseArrayListAdapter.java
 * Copyright (C) 2014 Plusub Tech. Co. Ltd. All Rights Reserved <admin@plusub.com>
 * 
 * Licensed under the Plusub License, Version 1.0 (the "License");
 * 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.
 *
 * author  : quhao <blakequ@gmail.com>
 * date     : 2014-6-7 下午9:50:52
 * last modify author :
 * version : 1.0
 */
package com.shlb.comb.adapter;

import android.content.Context;
import android.util.DisplayMetrics;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.BaseAdapter;

import java.util.ArrayList;
import java.util.List;

/**
 * 数组适配器，只需要实现 {@link #getView(int, View, ViewGroup)}
 * @author blakequ Blakequ@gmail.com
 *
 * @param <T>
 */
public abstract class BaseArrayListAdapter<T> extends BaseAdapter {

	protected Context mContext;
	protected LayoutInflater mInflater;
	private List<T> mDatas;
	/**屏幕的宽度*/
	protected int mScreenWidth;
	/**屏幕高度*/
	protected int mScreenHeight;
	/**屏幕密度*/
	protected float mDensity;
	
	public BaseArrayListAdapter(Context context){
		mContext = context;
		mInflater = LayoutInflater.from(context);
		mDatas = new ArrayList<T>();
		DisplayMetrics metric = new DisplayMetrics();
		WindowManager wm = (WindowManager)context.getSystemService(Context.WINDOW_SERVICE);
        wm.getDefaultDisplay().getMetrics(metric);
		mScreenWidth = metric.widthPixels;
		mScreenHeight = metric.heightPixels;
		mDensity = metric.density;
	}
	
	public BaseArrayListAdapter(Context context, List<T> datas){
		mContext = context;
		mInflater = LayoutInflater.from(context);
		if (datas != null && datas.size() > 0) {
			mDatas = datas;
		}else{
			mDatas = new ArrayList<T>();
		}
	}
	
	/**
	 * get context
	 * <p>Title: getContext
	 * <p>Description: 
	 * @return
	 */
	public Context getContext() {
		return mContext;
	}

	public LayoutInflater getInflater() {
		return mInflater;
	}

	/**
	 * get screen width
	 * <p>Title: getScreenWidth
	 * <p>Description: 
	 * @return
	 */
	public int getScreenWidth() {
		return mScreenWidth;
	}

	/**
	 * get screen height
	 * <p>Title: getScreenHeight
	 * <p>Description: 
	 * @return
	 */
	public int getScreenHeight() {
		return mScreenHeight;
	}

	/**
	 * return all data
	 * <p>Title: getAllData
	 * <p>Description: 
	 * @return
	 */
	public List<T> getAllData(){
		return mDatas;
	}
	
	/**
	 * add data to head
	 * <p>Title: addHead
	 * <p>Description: 
	 * @param datas
	 */
	public void addHead(T datas){
		if (datas != null) {
			mDatas.add(0, datas);
			notifyDataSetChanged();
		}
	}
	
	/**
	 * add data list to head
	 * <p>Title: addHead
	 * <p>Description: 
	 * @param datas
	 */
	public void addHead(List<T> datas){
		if (datas != null) {
			for (int i = 0; i < datas.size(); i++) {
				mDatas.add(i, datas.get(i));
			}
			notifyDataSetChanged();
		}
	}
	
	
	public void add(T datas){
		if (datas != null) {
			mDatas.add(datas);
			notifyDataSetChanged();
		}
	}
	
	public void add(int position, T datas){
		if (position < 0 || position >= mDatas.size() || datas == null) {
			return;
		}
		mDatas.add(position, datas);
		notifyDataSetChanged();
	}
	
	/**
	 * 更新指定位置数据
	 * <p>Title: update
	 * <p>Description: 
	 * @param position
	 * @param datas
	 */
	public void update(int position, T datas){
		if (position < 0 || position >= mDatas.size() || datas == null) {
			return;
		}
		mDatas.remove(position);
		mDatas.add(position, datas);
		notifyDataSetChanged();
	}
	
	/**
	 * add data to adapter
	 * <p>Title: addAll
	 * <p>Description: 
	 * @param datas
	 */
	public void addAll(List<T> datas){
		if (datas != null) {
			mDatas.addAll(datas);
			notifyDataSetChanged();
		}
	}
	
	/**
	 * refresh data to adapter, history data will be remove
	 * <p>Title: refreshData
	 * <p>Description: 
	 * @param datas
	 */
	public void refreshData(List<T> datas){
		if (datas != null) {
			mDatas.clear();
			mDatas.addAll(datas);
			notifyDataSetChanged();
		}
	}
	
	/**
	 * clear all data
	 * <p>Title: clear
	 * <p>Description:
	 */
	public void clear(){
		mDatas.clear();
		notifyDataSetChanged();
	}
	
	/**
	 * 删除指定位置数据
	 * <p>Title: delete
	 * <p>Description: 
	 * @param position
	 */
	public void delete(int position){
		if (position < 0 || position >= mDatas.size()) {
			return;
		}
		mDatas.remove(position);
		notifyDataSetChanged();
	}
	
	@Override
	public int getCount() {
		// TODO Auto-generated method stub
		return mDatas.size();
	}

	@Override
	public Object getItem(int position) {
		// TODO Auto-generated method stub
		if (mDatas == null || mDatas.size() <= 0 || position < 0 || position >= mDatas.size()) {
			return null;
		}
		return mDatas.get(position);
	}
 
	@Override
	public long getItemId(int position) {
		// TODO Auto-generated method stub
		return position;
	}

}