/**
* Copyright (C) 2013-2014 EaseMob Technologies. All rights reserved.
*
* 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.easemob.chatuidemo.adapter;
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.text.TextUtils;
import android.util.Log;
import android.util.SparseIntArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Filter;
import android.widget.ImageView;
import android.widget.SectionIndexer;
import android.widget.TextView;
import com.easemob.chat.EMChatManager;
import com.easemob.chat.EMConversation;
import com.easemob.chatuidemo.Constant;
import com.sxit.dreamiya.R;
import com.easemob.chatuidemo.domain.User;
import com.easemob.chatuidemo.utils.UserUtils;
import com.easemob.chatuidemo.widget.Sidebar;
import com.easemob.util.EMLog;
/**
* 简单的好友Adapter实现
*
*/
public class ContactAdapter extends ArrayAdapter<User> implements SectionIndexer{
private static final String TAG = "ContactAdapter";
List<String> list;
List<User> userList;
List<User> copyUserList;
private LayoutInflater layoutInflater;
private SparseIntArray positionOfSection;
private SparseIntArray sectionOfPosition;
private int res;
private MyFilter myFilter;
private boolean notiyfyByFilter;
public ContactAdapter(Context context, int resource, List<User> objects) {
super(context, resource, objects);
this.res = resource;
this.userList = objects;
copyUserList = new ArrayList<User>();
copyUserList.addAll(objects);
layoutInflater = LayoutInflater.from(context);
}
private static class ViewHolder {
ImageView avatar;
TextView unreadMsgView;
TextView nameTextview;
TextView tvHeader;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if(convertView == null){
holder = new ViewHolder();
convertView = layoutInflater.inflate(res, null);
holder.avatar = (ImageView) convertView.findViewById(R.id.avatar);
holder.unreadMsgView = (TextView) convertView.findViewById(R.id.unread_msg_number);
holder.nameTextview = (TextView) convertView.findViewById(R.id.name);
holder.tvHeader = (TextView) convertView.findViewById(R.id.header);
convertView.setTag(holder);
}else{
holder = (ViewHolder) convertView.getTag();
}
User user = getItem(position);
if(user == null)
Log.d("ContactAdapter", position + "");
//设置nick，demo里不涉及到完整user，用username代替nick显示
String username = user.getUsername();
String header = user.getHeader();
if (position == 0 || header != null && !header.equals(getItem(position - 1).getHeader())) {
if (TextUtils.isEmpty(header)) {
holder.tvHeader.setVisibility(View.GONE);
} else {
holder.tvHeader.setVisibility(View.VISIBLE);
holder.tvHeader.setText(header);
}
} else {
holder.tvHeader.setVisibility(View.GONE);
}
//显示申请与通知item
if(username.equals(Constant.NEW_FRIENDS_USERNAME)){
holder.nameTextview.setText(user.getNick());
holder.avatar.setImageResource(R.drawable.new_friends_icon);
if(user.getUnreadMsgCount() > 0){
holder.unreadMsgView.setVisibility(View.VISIBLE);
// holder.unreadMsgView.setText(user.getUnreadMsgCount()+"");
}else{
holder.unreadMsgView.setVisibility(View.INVISIBLE);
}
}else if(username.equals(Constant.GROUP_USERNAME)){
//群聊item
holder.nameTextview.setText(user.getNick());
holder.avatar.setImageResource(R.drawable.groups_icon);
}else if(username.equals(Constant.CHAT_ROOM)){
//群聊item
holder.nameTextview.setText(user.getNick());
holder.avatar.setImageResource(R.drawable.groups_icon);
}else if(username.equals(Constant.CHAT_ROBOT)){
//Robot item
holder.nameTextview.setText(user.getNick());
holder.avatar.setImageResource(R.drawable.groups_icon);
}else{
holder.nameTextview.setText(username);
//设置用户头像
UserUtils.setUserAvatar(getContext(), username, holder.avatar);
if(holder.unreadMsgView != null)
holder.unreadMsgView.setVisibility(View.INVISIBLE);
}
return convertView;
}
@Override
public User getItem(int position) {
return super.getItem(position);
}
@Override
public int getCount() {
return super.getCount();
}
public int getPositionForSection(int section) {
return positionOfSection.get(section);
}
public int getSectionForPosition(int position) {
return sectionOfPosition.get(position);
}
@Override
public Object[] getSections() {
positionOfSection = new SparseIntArray();
sectionOfPosition = new SparseIntArray();
int count = getCount();
list = new ArrayList<String>();
list.add(getContext().getString(R.string.search_header));
positionOfSection.put(0, 0);
sectionOfPosition.put(0, 0);
for (int i = 1; i < count; i++) {
String letter = getItem(i).getHeader();
EMLog.d(TAG, "contactadapter getsection getHeader:" + letter + " name:" + getItem(i).getUsername());
int section = list.size() - 1;
if (list.get(section) != null && !list.get(section).equals(letter)) {
list.add(letter);
section++;
positionOfSection.put(section, i);
}
sectionOfPosition.put(i, section);
}
return list.toArray(new String[list.size()]);
}
@Override
public Filter getFilter() {
if(myFilter==null){
myFilter = new MyFilter(userList);
}
return myFilter;
}
private class MyFilter extends Filter{
List<User> mOriginalList = null;
public MyFilter(List<User> myList) {
this.mOriginalList = myList;
}
@Override
protected synchronized FilterResults performFiltering(CharSequence prefix) {
FilterResults results = new FilterResults();
if(mOriginalList==null){
mOriginalList = new ArrayList<User>();
}
EMLog.d(TAG, "contacts original size: " + mOriginalList.size());
EMLog.d(TAG, "contacts copy size: " + copyUserList.size());
if(prefix==null || prefix.length()==0){
results.values = copyUserList;
results.count = copyUserList.size();
}else{
String prefixString = prefix.toString();
final int count = mOriginalList.size();
final ArrayList<User> newValues = new ArrayList<User>();
for(int i=0;i<count;i++){
final User user = mOriginalList.get(i);
String username = user.getUsername();
if(username.startsWith(prefixString)){
newValues.add(user);
}
else{
final String[] words = username.split(" ");
final int wordCount = words.length;
// Start at index 0, in case valueText starts with space(s)
for (int k = 0; k < wordCount; k++) {
if (words[k].startsWith(prefixString)) {
newValues.add(user);
break;
}
}
}
}
results.values=newValues;
results.count=newValues.size();
}
EMLog.d(TAG, "contacts filter results size: " + results.count);
return results;
}
@Override
protected synchronized void publishResults(CharSequence constraint,
FilterResults results) {
userList.clear();
userList.addAll((List<User>)results.values);
EMLog.d(TAG, "publish contacts filter results size: " + results.count);
if (results.count > 0) {
notiyfyByFilter = true;
notifyDataSetChanged();
notiyfyByFilter = false;
} else {
notifyDataSetInvalidated();
}
}
}
@Override
public void notifyDataSetChanged() {
super.notifyDataSetChanged();
if(!notiyfyByFilter){
copyUserList.clear();
copyUserList.addAll(userList);
}
}
}