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TreeNode.java
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package ru.miksoft.efn.atv.model;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import ru.miksoft.efn.R;
import ru.miksoft.efn.atv.view.AndroidTreeView;
import ru.miksoft.efn.atv.view.TreeNodeWrapperView;
/**
* Created by Bogdan Melnychuk on 2/10/15.
*/
public class TreeNode {
public static final String NODES_ID_SEPARATOR = ":";
private int mId;
private int mLastId;
private TreeNode mParent;
private boolean mSelected;
private boolean mSelectable = true;
private final List<TreeNode> children;
private BaseNodeViewHolder mViewHolder;
private TreeNodeClickListener mClickListener;
private TreeNodeLongClickListener mLongClickListener;
private Object mValue;
private boolean mExpanded;
public static TreeNode root() {
TreeNode root = new TreeNode(null);
root.setSelectable(false);
return root;
}
private int generateId() {
return ++mLastId;
}
public TreeNode(Object value) {
children = new ArrayList<>();
mValue = value;
}
public TreeNode addChild(TreeNode childNode) {
childNode.mParent = this;
childNode.mId = generateId();
children.add(childNode);
return this;
}
public TreeNode addChildren(TreeNode... nodes) {
for (TreeNode n : nodes) {
addChild(n);
}
return this;
}
public TreeNode addChildren(Collection<TreeNode> nodes) {
for (TreeNode n : nodes) {
addChild(n);
}
return this;
}
public int deleteChild(TreeNode child) {
for (int i = 0; i < children.size(); i++) {
if (child.mId == children.get(i).mId) {
children.remove(i);
return i;
}
}
return -1;
}
public List<TreeNode> getChildren() {
return Collections.unmodifiableList(children);
}
public TreeNode getLastChildren() {
if (children.size() == 0) {
return null;
} else {
return children.get(children.size() - 1);
}
}
public TreeNode getLastByLevelChildren(int mLevel) {
TreeNode root = this;
while (mLevel > 0) {
root = root.getLastChildren();
mLevel--;
}
return root;
}
public int size() {
return children.size();
}
public TreeNode getParent() {
return mParent;
}
public int getId() {
return mId;
}
public boolean isLeaf() {
return size() == 0;
}
public Object getValue() {
return mValue;
}
public boolean isExpanded() {
return mExpanded;
}
public TreeNode setExpanded(boolean expanded) {
mExpanded = expanded;
return this;
}
public void setSelected(boolean selected) {
mSelected = selected;
}
public boolean isSelected() {
return mSelectable && mSelected;
}
public void setSelectable(boolean selectable) {
mSelectable = selectable;
}
public boolean isSelectable() {
return mSelectable;
}
public String getPath() {
final StringBuilder path = new StringBuilder();
TreeNode node = this;
while (node.mParent != null) {
path.append(node.getId());
node = node.mParent;
if (node.mParent != null) {
path.append(NODES_ID_SEPARATOR);
}
}
return path.toString();
}
public int getLevel() {
int level = 0;
TreeNode root = this;
while (root.mParent != null) {
root = root.mParent;
level++;
}
return level;
}
public boolean isLastChild() {
if (!isRoot()) {
int parentSize = mParent.children.size();
if (parentSize > 0) {
final List<TreeNode> parentChildren = mParent.children;
return parentChildren.get(parentSize - 1).mId == mId;
}
}
return false;
}
public TreeNode setViewHolder(BaseNodeViewHolder viewHolder) {
mViewHolder = viewHolder;
if (viewHolder != null) {
viewHolder.mNode = this;
}
return this;
}
public TreeNode setClickListener(TreeNodeClickListener listener) {
mClickListener = listener;
return this;
}
public TreeNodeClickListener getClickListener() {
return this.mClickListener;
}
public TreeNode setLongClickListener(TreeNodeLongClickListener listener) {
mLongClickListener = listener;
return this;
}
public TreeNodeLongClickListener getLongClickListener() {
return mLongClickListener;
}
public BaseNodeViewHolder getViewHolder() {
return mViewHolder;
}
public boolean isFirstChild() {
if (!isRoot()) {
List<TreeNode> parentChildren = mParent.children;
return parentChildren.get(0).mId == mId;
}
return false;
}
public boolean isRoot() {
return mParent == null;
}
public TreeNode getRoot() {
TreeNode root = this;
while (root.mParent != null) {
root = root.mParent;
}
return root;
}
public interface TreeNodeClickListener {
void onClick(TreeNode node, Object value);
}
public interface TreeNodeLongClickListener {
boolean onLongClick(TreeNode node, Object value);
}
public static abstract class BaseNodeViewHolder<E> {
protected AndroidTreeView tView;
protected TreeNode mNode;
private View mView;
protected int containerStyle;
protected Context context;
public BaseNodeViewHolder(Context context) {
this.context = context;
}
public View getView() {
if (mView != null) {
return mView;
}
final View nodeView = getNodeView();
final TreeNodeWrapperView nodeWrapperView = new TreeNodeWrapperView(nodeView.getContext(), getContainerStyle());
nodeWrapperView.insertNodeView(nodeView);
mView = nodeWrapperView;
return mView;
}
public void setTreeViev(AndroidTreeView treeViev) {
this.tView = treeViev;
}
public AndroidTreeView getTreeView() {
return tView;
}
public void setContainerStyle(int style) {
containerStyle = style;
}
public View getNodeView() {
return createNodeView(mNode, (E) mNode.getValue());
}
public ViewGroup getNodeItemsView() {
return (ViewGroup) getView().findViewById(R.id.node_items);
}
public boolean isInitialized() {
return mView != null;
}
public int getContainerStyle() {
return containerStyle;
}
public abstract View createNodeView(TreeNode node, E value);
public void toggle(boolean active) {
// empty
}
public void toggleSelectionMode(boolean editModeEnabled) {
// empty
}
}
}