package com.freelib.multiitem.adapter;
import android.support.annotation.NonNull;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.StaggeredGridLayoutManager;
import android.view.View;
import android.view.ViewGroup;
import com.freelib.multiitem.adapter.holder.BaseViewHolder;
import com.freelib.multiitem.adapter.holder.HeadFootHolderManager;
import com.freelib.multiitem.adapter.holder.ViewHolderManager;
import com.freelib.multiitem.adapter.holder.ViewHolderManagerGroup;
import com.freelib.multiitem.adapter.holder.ViewHolderParams;
import com.freelib.multiitem.adapter.type.ItemTypeManager;
import com.freelib.multiitem.common.Const;
import com.freelib.multiitem.item.LoadMoreManager;
import com.freelib.multiitem.item.UniqueItemManager;
import com.freelib.multiitem.listener.OnItemClickListener;
import com.freelib.multiitem.listener.OnItemLongClickListener;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* RecyclerView的adapter<p>
* 天然支持多类型视图 {@link ItemTypeManager}<br>
* adapter与view holder创建绑定解耦{@link #register(Class, ViewHolderManager)}
*
* @author free46000 2017/03/15
* @version v1.0
*/
public class BaseItemAdapter extends RecyclerView.Adapter<BaseViewHolder> {
private List<Object> dataItems = new ArrayList<>();
private List<Object> headItems = new ArrayList<>();
private List<Object> footItems = new ArrayList<>();
private ItemTypeManager itemTypeManager;
private LoadMoreManager loadMoreManager;
private OnItemClickListener onItemClickListener;
private OnItemLongClickListener onItemLongClickListener;
private ViewHolderParams params = new ViewHolderParams();
public BaseItemAdapter() {
itemTypeManager = new ItemTypeManager();
}
/**
* 为数据源注册ViewHolder的管理类{@link ViewHolderManager}<br>
* ViewHolder的管理类使adapter与view holder的创建绑定解耦<br>
* 通过{@link ItemTypeManager}管理不同数据源和ViewHolder的关系<br>
*
* @param cls 数据源class
* @param manager 数据源管理类
* @param <T> 数据源
* @param <V> ViewHolder
* @see #register(Class, ViewHolderManagerGroup) 为相同数据源注册多个ViewHolder的管理类
*/
public <T, V extends BaseViewHolder> void register(@NonNull Class<T> cls, @NonNull ViewHolderManager<T, V> manager) {
itemTypeManager.register(cls, manager);
}
/**
* 为相同数据源注册多个ViewHolder的管理类{@link ViewHolderManagerGroup}<br>
* 主要为相同数据源根据内部属性的值对应多个ViewHolderManager设计，常见的如聊天界面的消息<br>
*
* @param cls 数据源class
* @param group 对应相同数据源的一组数据源管理类
* @param <T> 数据源
* @param <V> ViewHolder
* @see #register(Class, ViewHolderManager) 为数据源注册ViewHolder的管理类
*/
public <T, V extends BaseViewHolder> void register(@NonNull Class<T> cls, @NonNull ViewHolderManagerGroup<T> group) {
itemTypeManager.register(cls, group);
}
/**
* 设置Item view点击监听
*/
public void setOnItemClickListener(@NonNull OnItemClickListener onItemClickListener) {
this.onItemClickListener = onItemClickListener;
}
/**
* 设置item view长按监听
*/
public void setOnItemLongClickListener(@NonNull OnItemLongClickListener onItemLongClickListener) {
this.onItemLongClickListener = onItemLongClickListener;
}
/**
* 设置Item list
*/
public void setDataItems(@NonNull List<? extends Object> dataItems) {
setItem(dataItems);
}
/**
* 添加Item
*/
public void addDataItem(@NonNull Object item) {
addDataItem(dataItems.size(), item);
}
/**
* 在指定位置添加Item
*/
public void addDataItem(int position, @NonNull Object item) {
addDataItems(position, Collections.singletonList(item));
}
/**
* 添加ItemList
*/
public void addDataItems(@NonNull List<? extends Object> items) {
addDataItems(dataItems.size(), items);
}
/**
* 在指定位置添加ItemList
*/
public void addDataItems(int position, @NonNull List<? extends Object> items) {
addItem(position, items);
}
/**
* add item的最后调用处
*/
protected void addItem(int position, @NonNull List<? extends Object> items) {
dataItems.addAll(position, items);
notifyItemRangeInserted(position + getHeadCount(), items.size());
}
/**
* 设置item的最后调用处
*/
protected void setItem(@NonNull List<? extends Object> dataItems) {
this.dataItems = (List<Object>) dataItems;
notifyDataSetChanged();
}
/**
* 移动Item的位置 包括数据源和界面的移动
*
* @param fromPosition Item之前所在位置
* @param toPosition Item新的位置
*/
public void moveDataItem(int fromPosition, int toPosition) {
//考虑到跨position(如0->2)移动的时候处理不能Collections.swap
// if(from<to) to = to + 1 - 1;//+1是因为add的时候应该是to位置后1位，-1是因为先remove了from所以位置往前挪了1位
dataItems.add(toPosition, dataItems.remove(fromPosition));
notifyItemMoved(fromPosition + getHeadCount(), toPosition + getHeadCount());
}
/**
* 移除Item 包括数据源和界面的移除
*
* @param position 需要被移除Item的position
*/
public void removeDataItem(int position) {
removeDataItem(position, 1);
}
/**
* 改变Item 包括数据源和界面的移除
*
* @param position 需要被移除第一个Item的position
* @param position 需要被移除Item的个数
*/
public void removeDataItem(int position, int itemCount) {
for (int i = 0; i < itemCount; i++) {
dataItems.remove(position);
}
notifyItemRangeRemoved(position + getHeadCount(), itemCount);
}
/**
* 添加foot View，默认为充满父布局
* <p>
* {@link ViewHolderManager#isFullSpan()}
* {@link ViewHolderManager#getSpanSize(int)}
*
* @param footView foot itemView
* @see HeadFootHolderManager
* @see UniqueItemManager
*/
public void addFootView(@NonNull View footView) {
addFootItem(new UniqueItemManager(new HeadFootHolderManager(footView)));
}
/**
* 添加foot ItemManager ,如是表格不居中需要充满父布局请设置对应属性<br>
* {@link ViewHolderManager#isFullSpan()}
* {@link ViewHolderManager#getSpanSize(int)}
*
* @param footItem foot item
* @see HeadFootHolderManager
*/
public void addFootItem(@NonNull Object footItem) {
footItems.add(footItem);
}
/**
* 添加head View，默认为充满父布局
* <p>
* {@link ViewHolderManager#isFullSpan()}
* {@link ViewHolderManager#getSpanSize(int)}
*
* @param headView head itemView
* @see HeadFootHolderManager
* @see UniqueItemManager
*/
public void addHeadView(@NonNull View headView) {
addHeadItem(new UniqueItemManager(new HeadFootHolderManager(headView)));
}
/**
* 添加head ItemManager ,如是表格不居中需要充满父布局请设置对应属性<br>
* {@link ViewHolderManager#isFullSpan()}
* {@link ViewHolderManager#getSpanSize(int)}
*
* @param headItem head item
* @see HeadFootHolderManager
*/
public void addHeadItem(@NonNull Object headItem) {
headItems.add(headItem);
}
/**
* 开启loadMore，使列表支持加载更多<p>
* 本方法原理是添加{@link #addFootItem(Object)} 并且对添加顺序敏感需要注意在最后调用本方法才可以将加载更多视图放在底部
*
* @param loadMoreManager LoadMoreManager
*/
public void enableLoadMore(@NonNull LoadMoreManager loadMoreManager) {
this.loadMoreManager = loadMoreManager;
loadMoreManager.setAdapter(this);
addFootItem(loadMoreManager);
}
/**
* 加载完成
*
* @see LoadMoreManager#loadCompleted(boolean)
*/
public void setLoadCompleted(boolean isLoadAll) {
if (loadMoreManager != null) {
loadMoreManager.loadCompleted(isLoadAll);
}
}
/**
* 加载失败
*
* @see LoadMoreManager#loadFailed()
*/
public void setLoadFailed() {
if (loadMoreManager != null) {
loadMoreManager.loadFailed();
}
}
/**
* @return 获取当前数据源List，不包含head和foot
*/
public List<Object> getDataList() {
return dataItems;
}
/**
* @param position int
* @return 返回指定位置Item
*/
public Object getItem(int position) {
if (position < headItems.size()) {
return headItems.get(position);
}
position -= headItems.size();
if (position < dataItems.size()) {
return dataItems.get(position);
}
position -= dataItems.size();
if (position < footItems.size()) {
return footItems.get(position);
}
return null;
}
/**
* 清空数据
*/
public void clearAllData() {
clearData();
headItems.clear();
footItems.clear();
}
/**
* 清空Item数据不含head 和 foot
*/
public void clearData() {
dataItems.clear();
}
@Override
public BaseViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
ViewHolderManager provider = itemTypeManager.getViewHolderManager(viewType);
BaseViewHolder viewHolder = provider.onCreateViewHolder(parent);
viewHolder.viewHolderManager = provider;
return viewHolder;
}
@Override
public void onBindViewHolder(BaseViewHolder holder, int position) {
Object item = getItem(position);
ViewHolderManager manager = holder.viewHolderManager;
params.setItemCount(getItemCount()).setClickListener(onItemClickListener)
.setLongClickListener(onItemLongClickListener);
manager.onBindViewHolder(holder, item, params);
//赋值 方便以后使用
holder.itemView.setTag(Const.VIEW_HOLDER_TAG, holder);
holder.itemData = item;
}
@Override
public int getItemViewType(int position) {
int type = itemTypeManager.getItemType(getItem(position));
if (type < 0) {
throw new RuntimeException("没有为" + getItem(position).getClass() + "找到对应的item itemView manager，是否注册了？");
}
return type;
}
@Override
public int getItemCount() {
return dataItems.size() + getHeadCount() + getFootCount();
}
@Override
public void onViewAttachedToWindow(BaseViewHolder holder) {
super.onViewAttachedToWindow(holder);
// System.out.println("onViewAttachedToWindow:::" + holder.getItemPosition() + "==" + holder.getItemData());
//当StaggeredGridLayoutManager的时候设置充满横屏
if (holder.getViewHolderManager().isFullSpan() && holder.itemView.getLayoutParams() instanceof StaggeredGridLayoutManager.LayoutParams) {
StaggeredGridLayoutManager.LayoutParams params = (StaggeredGridLayoutManager.LayoutParams) holder.itemView.getLayoutParams();
params.setFullSpan(true);
}
}
@Override
public void onAttachedToRecyclerView(final RecyclerView recyclerView) {
super.onAttachedToRecyclerView(recyclerView);
// System.out.println("onAttachedToRecyclerView:::" + getItemCount());
RecyclerView.LayoutManager manager = recyclerView.getLayoutManager();
if (manager instanceof GridLayoutManager) {
//GridLayoutManager时设置每行的span
final GridLayoutManager gridManager = ((GridLayoutManager) manager);
gridManager.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
ViewHolderManager holderManager;
@Override
public int getSpanSize(int position) {
holderManager = itemTypeManager.getViewHolderManager(getItemViewType(position));
return holderManager.getSpanSize(gridManager.getSpanCount());
}
});
}
}
/**
* @return head view个数
*/
public int getHeadCount() {
return headItems.size();
}
/**
* @return foot view个数
*/
public int getFootCount() {
return footItems.size();
}
}