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TreeRVDemoFragment.java
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TreeRVDemoFragment.java
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package com.haiyunshan.demo.recyclerview;
import android.content.res.ColorStateList;
import android.graphics.Color;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import club.andnext.overscroll.OverScrollHelper;
import club.andnext.recyclerview.bridge.BridgeAdapter;
import club.andnext.recyclerview.bridge.BridgeAdapterProvider;
import club.andnext.recyclerview.bridge.BridgeBuilder;
import club.andnext.recyclerview.bridge.BridgeViewHolder;
import club.andnext.recyclerview.decoration.MarginDividerDecoration;
import club.andnext.recyclerview.swipe.SwipeActionHelper;
import club.andnext.recyclerview.swipe.SwipeHolder;
import club.andnext.recyclerview.swipe.SwipeViewHolder;
import club.andnext.recyclerview.swipe.runner.RightActionRunner;
import club.andnext.recyclerview.tree.TreeList;
import club.andnext.recyclerview.tree.TreeListAdapterCallback;
import club.andnext.utils.GsonUtils;
import club.andnext.utils.UUIDUtils;
import com.haiyunshan.dataset.AreaDataset;
import com.haiyunshan.whatsandroid.R;
import java.util.List;
/**
* A simple {@link Fragment} subclass.
*/
public class TreeRVDemoFragment extends Fragment {
protected RecyclerView recyclerView;
BridgeAdapter adapter;
SwipeActionHelper swipeActionHelper;
MarginDividerDecoration dividerDecoration;
protected View actionLayout;
protected TextView editBtn;
TreeList treeList;
public TreeRVDemoFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_tree_recycler_view_demo, container, false);
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
{
this.actionLayout = view.findViewById(R.id.action_layout);
this.editBtn = view.findViewById(R.id.btn_edit);
}
{
this.recyclerView = view.findViewById(R.id.recycler_list_view);
LinearLayoutManager layout = new LinearLayoutManager(getActivity());
recyclerView.setLayoutManager(layout);
}
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
{
this.dividerDecoration = new MarginDividerDecoration(getActivity());
dividerDecoration.setMargin(36);
recyclerView.addItemDecoration(dividerDecoration);
}
{
this.adapter = new BridgeAdapter(getActivity(), new BridgeAdapterProvider() {
@Override
public Object get(int position) {
return treeList.get(position);
}
@Override
public int size() {
return treeList.size();
}
});
adapter.bind(AreaDataset.AreaEntry.class,
new BridgeBuilder(TreeDemoViewHolder.class, TreeDemoViewHolder.LAYOUT_RES_ID, this));
adapter.bind(FolderHeader.class,
new BridgeBuilder(FolderViewHolder.class, FolderViewHolder.LAYOUT_RES_ID, this));
}
{
OverScrollHelper helper = OverScrollHelper.attach(recyclerView);
this.swipeActionHelper = new SwipeActionHelper(helper);
swipeActionHelper.attach(recyclerView);
}
{
this.treeList = new TreeList(new TreeListAdapterCallback(adapter) {
@Override
public void onInserted(int position, int count) {
super.onInserted(position, count);
recyclerView.smoothScrollToPosition(position);
}
});
treeList.add(null, new FolderHeader());
{
AreaDataset dataset = GsonUtils.fromJson(getActivity(), "dataset/area_ds.json", AreaDataset.class);
this.buildTree(treeList, dataset, null);
}
}
{
recyclerView.setAdapter(adapter);
}
}
void buildTree(TreeList tree, AreaDataset ds, AreaDataset.AreaEntry parent) {
List<AreaDataset.AreaEntry> list = ds.getChildren(parent == null? "": parent.getId(), null);
for (AreaDataset.AreaEntry e : list) {
tree.add(parent, e);
}
for (AreaDataset.AreaEntry e : list) {
this.buildTree(tree, ds, e);
}
}
private static class FolderViewHolder extends BridgeViewHolder<FolderHeader> implements View.OnClickListener {
static final int LAYOUT_RES_ID = android.R.layout.simple_list_item_1;
TreeRVDemoFragment parent;
public FolderViewHolder(TreeRVDemoFragment parent, View itemView) {
super(itemView);
this.parent = parent;
}
@Override
public int getLayoutResourceId() {
return LAYOUT_RES_ID;
}
@Override
public void onViewCreated(@NonNull View view) {
TextView nameView = ((TextView)view);
nameView.setText("新建文件夹");
nameView.setTextColor(ColorStateList.valueOf(Color.MAGENTA));
view.setOnClickListener(this);
}
@Override
public void onBind(FolderHeader item, int position) {
}
@Override
public void onClick(View v) {
if (v == itemView) {
this.folder();
}
}
void folder() {
int count = parent.treeList.getChildCount(null);
String id = UUIDUtils.next();
String parent = "";
String name = "新建文件夹 " + (count + 1);
this.parent.treeList.add(null, new AreaDataset.AreaEntry(id, parent, name));
}
}
/**
*
*/
private static class TreeDemoViewHolder extends SwipeViewHolder<AreaDataset.AreaEntry> implements View.OnClickListener {
static final int LAYOUT_RES_ID = R.layout.layout_area_tree_list_item;
static final int PADDING = 48;
View contentLayout;
TextView nameView;
ImageView arrowView;
View folderBtn;
View deleteBtn;
TreeRVDemoFragment parent;
public TreeDemoViewHolder(TreeRVDemoFragment parent, View itemView) {
super(itemView);
this.parent = parent;
}
@Override
public int getLayoutResourceId() {
return LAYOUT_RES_ID;
}
@Override
public void onViewCreated(@NonNull View view) {
{
this.contentLayout = view.findViewById(R.id.content_layout);
this.nameView = view.findViewById(R.id.tv_name);
this.arrowView = view.findViewById(R.id.iv_right);
contentLayout.setOnClickListener(this);
}
{
this.deleteBtn = view.findViewById(R.id.action_delete);
deleteBtn.setOnClickListener(this);
this.folderBtn = view.findViewById(R.id.action_folder);
folderBtn.setOnClickListener(this);
}
{
SwipeHolder holder = new SwipeHolder(parent.swipeActionHelper, view, contentLayout);
{
RightActionRunner r = new RightActionRunner();
r.add(folderBtn);
r.add(deleteBtn);
holder.add(r);
}
this.setSwipeHolder(holder);
}
}
@Override
public void onBind(AreaDataset.AreaEntry item, int position) {
{
nameView.setText(item.getName());
int level = parent.treeList.getLevel(item);
level = (level < 0)? 0: level;
int padding = level * PADDING;
int left = padding;
int top = nameView.getPaddingTop();
int right = nameView.getPaddingRight();
int bottom = nameView.getPaddingBottom();
nameView.setPadding(left, top, right, bottom);
}
{
boolean isLeaf = parent.treeList.isLeaf(item);
arrowView.setVisibility(isLeaf ? View.INVISIBLE : View.VISIBLE);
if (arrowView.getVisibility() == View.VISIBLE) {
float degree = (parent.treeList.isExpand(item)) ? 90 : 0;
arrowView.setRotation(degree);
}
}
}
@Override
public void onActionBegin(SwipeActionHelper helper, int action) {
}
@Override
public void onActionEnd(SwipeActionHelper helper, int action) {
}
@Override
public void onClick(View v) {
if (v == contentLayout) {
this.click();
} else if (v == deleteBtn) {
this.delete();
} else if (v == folderBtn) {
this.folder();
}
}
void click() {
AreaDataset.AreaEntry item = this.getEntity();
if (parent.treeList.isLeaf(item)) {
} else {
boolean expand = parent.treeList.isExpand(item);
expand = parent.treeList.setExpand(item, !expand);
if (expand) {
arrowView.animate().rotation(90);
} else {
arrowView.animate().rotation(0);
}
}
}
void delete() {
AreaDataset.AreaEntry entity = getEntity();
parent.treeList.remove(entity);
}
void folder() {
AreaDataset.AreaEntry entity = getEntity();
String name = entity.getName() + " " + (parent.treeList.getChildCount(entity) + 1);
String parent = entity.getId();
String id = UUIDUtils.next();
AreaDataset.AreaEntry child = new AreaDataset.AreaEntry(id, parent, name);
this.parent.treeList.add(entity, child);
this.parent.treeList.setExpand(entity, true);
}
AreaDataset.AreaEntry getEntity() {
int position = this.getAdapterPosition();
if (position < 0) {
return null;
}
Object obj = parent.adapter.get(position);
AreaDataset.AreaEntry item = (AreaDataset.AreaEntry)(obj);
return item;
}
@Override
public float getTranslation(MarginDividerDecoration decoration) {
AreaDataset.AreaEntry item = this.getEntity();
int level = parent.treeList.getLevel(item);
level = (level < 0)? 0: level;
int padding = level * PADDING;
padding += super.getTranslation(decoration);
return padding;
}
}
/**
*
*/
private static class FolderHeader {
}
}