491 lines
14 KiB
C#
491 lines
14 KiB
C#
using System;
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using System.Collections.Generic;
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namespace FairyGUI
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{
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/// <summary>
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///
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/// </summary>
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[Obsolete("Use GTree and GTreeNode instead")]
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public class TreeView : EventDispatcher
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{
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/// <summary>
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/// TreeView使用的List对象
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/// </summary>
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public GList list { get; private set; }
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/// <summary>
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/// TreeView的顶层节点，这是个虚拟节点，也就是他不会显示出来。
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/// </summary>
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public TreeNode root { get; private set; }
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/// <summary>
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/// TreeView每级的缩进，单位像素。
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/// </summary>
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public int indent;
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public delegate GComponent TreeNodeCreateCellDelegate(TreeNode node);
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public delegate void TreeNodeRenderDelegate(TreeNode node);
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public delegate void TreeNodeWillExpandDelegate(TreeNode node, bool expand);
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/// <summary>
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/// 当TreeNode需要创建对象的显示对象时回调
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/// </summary>
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public TreeNodeCreateCellDelegate treeNodeCreateCell;
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/// <summary>
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/// 当TreeNode需要更新时回调
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/// </summary>
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public TreeNodeRenderDelegate treeNodeRender;
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/// <summary>
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/// 当TreeNode即将展开或者收缩时回调。可以在回调中动态增加子节点。
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/// </summary>
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public TreeNodeWillExpandDelegate treeNodeWillExpand;
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/// <summary>
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/// 点击任意TreeNode时触发
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/// </summary>
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public EventListener onClickNode { get; private set; }
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/// <summary>
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/// 右键点击任意TreeNode时触发
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/// </summary>
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public EventListener onRightClickNode { get; private set; }
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/// <summary>
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///
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/// </summary>
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/// <param name="list"></param>
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public TreeView(GList list)
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{
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this.list = list;
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list.onClickItem.Add(__clickItem);
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list.onRightClickItem.Add(__clickItem);
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list.RemoveChildrenToPool();
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root = new TreeNode(true);
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root.SetTree(this);
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root.cell = list;
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root.expanded = true;
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indent = 30;
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onClickNode = new EventListener(this, "onClickNode");
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onRightClickNode = new EventListener(this, "onRightClickNode");
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}
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/// <summary>
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///
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/// </summary>
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/// <returns></returns>
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public TreeNode GetSelectedNode()
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{
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if (list.selectedIndex != -1)
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return (TreeNode)list.GetChildAt(list.selectedIndex).data;
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else
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return null;
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}
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/// <summary>
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///
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/// </summary>
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/// <returns></returns>
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public List<TreeNode> GetSelection()
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{
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List<int> sels = list.GetSelection();
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int cnt = sels.Count;
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List<TreeNode> ret = new List<TreeNode>();
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for (int i = 0; i < cnt; i++)
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{
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TreeNode node = (TreeNode)list.GetChildAt(sels[i]).data;
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ret.Add(node);
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}
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return ret;
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="node"></param>
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/// <param name="scrollItToView"></param>
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public void AddSelection(TreeNode node, bool scrollItToView = false)
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{
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TreeNode parentNode = node.parent;
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while (parentNode != null && parentNode != root)
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{
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parentNode.expanded = true;
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parentNode = parentNode.parent;
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}
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list.AddSelection(list.GetChildIndex(node.cell), scrollItToView);
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="node"></param>
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public void RemoveSelection(TreeNode node)
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{
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list.RemoveSelection(list.GetChildIndex(node.cell));
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}
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/// <summary>
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///
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/// </summary>
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public void ClearSelection()
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{
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list.ClearSelection();
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="node"></param>
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/// <returns></returns>
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public int GetNodeIndex(TreeNode node)
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{
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return list.GetChildIndex(node.cell);
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="node"></param>
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public void UpdateNode(TreeNode node)
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{
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if (node.cell == null)
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return;
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if (treeNodeRender != null)
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treeNodeRender(node);
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="nodes"></param>
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public void UpdateNodes(List<TreeNode> nodes)
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{
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int cnt = nodes.Count;
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for (int i = 0; i < cnt; i++)
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{
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TreeNode node = nodes[i];
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if (node.cell == null)
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return;
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if (treeNodeRender != null)
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treeNodeRender(node);
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}
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="folderNode"></param>
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public void ExpandAll(TreeNode folderNode)
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{
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folderNode.expanded = true;
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int cnt = folderNode.numChildren;
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for (int i = 0; i < cnt; i++)
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{
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TreeNode node = folderNode.GetChildAt(i);
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if (node.isFolder)
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ExpandAll(node);
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}
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="folderNode"></param>
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public void CollapseAll(TreeNode folderNode)
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{
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if (folderNode != root)
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folderNode.expanded = false;
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int cnt = folderNode.numChildren;
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for (int i = 0; i < cnt; i++)
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{
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TreeNode node = folderNode.GetChildAt(i);
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if (node.isFolder)
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CollapseAll(node);
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}
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="node"></param>
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void CreateCell(TreeNode node)
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{
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if (treeNodeCreateCell != null)
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node.cell = treeNodeCreateCell(node);
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else
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node.cell = list.itemPool.GetObject(list.defaultItem) as GComponent;
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if (node.cell == null)
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throw new Exception("Unable to create tree cell");
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node.cell.data = node;
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GObject indentObj = node.cell.GetChild("indent");
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if (indentObj != null)
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indentObj.width = (node.level - 1) * indent;
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GButton expandButton = (GButton)node.cell.GetChild("expandButton");
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if (expandButton != null)
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{
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if (node.isFolder)
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{
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expandButton.visible = true;
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expandButton.onClick.Add(__clickExpandButton);
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expandButton.data = node;
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expandButton.selected = node.expanded;
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}
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else
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expandButton.visible = false;
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}
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if (treeNodeRender != null)
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treeNodeRender(node);
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="node"></param>
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internal void AfterInserted(TreeNode node)
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{
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CreateCell(node);
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int index = GetInsertIndexForNode(node);
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list.AddChildAt(node.cell, index);
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if (treeNodeRender != null)
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treeNodeRender(node);
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if (node.isFolder && node.expanded)
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CheckChildren(node, index);
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="node"></param>
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/// <returns></returns>
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int GetInsertIndexForNode(TreeNode node)
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{
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TreeNode prevNode = node.GetPrevSibling();
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if (prevNode == null)
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prevNode = node.parent;
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int insertIndex = list.GetChildIndex(prevNode.cell) + 1;
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int myLevel = node.level;
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int cnt = list.numChildren;
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for (int i = insertIndex; i < cnt; i++)
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{
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TreeNode testNode = (TreeNode)list.GetChildAt(i).data;
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if (testNode.level <= myLevel)
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break;
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insertIndex++;
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}
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return insertIndex;
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="node"></param>
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internal void AfterRemoved(TreeNode node)
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{
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RemoveNode(node);
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="node"></param>
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internal void AfterExpanded(TreeNode node)
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{
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if (node != root && treeNodeWillExpand != null)
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treeNodeWillExpand(node, true);
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if (node.cell == null)
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return;
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if (node != root)
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{
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if (treeNodeRender != null)
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treeNodeRender(node);
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GButton expandButton = (GButton)node.cell.GetChild("expandButton");
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if (expandButton != null)
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expandButton.selected = true;
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}
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if (node.cell.parent != null)
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CheckChildren(node, list.GetChildIndex(node.cell));
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="node"></param>
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internal void AfterCollapsed(TreeNode node)
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{
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if (node != root && treeNodeWillExpand != null)
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treeNodeWillExpand(node, false);
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if (node.cell == null)
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return;
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if (node != root)
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{
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if (treeNodeRender != null)
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treeNodeRender(node);
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GButton expandButton = (GButton)node.cell.GetChild("expandButton");
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if (expandButton != null)
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expandButton.selected = false;
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}
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if (node.cell.parent != null)
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HideFolderNode(node);
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="node"></param>
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internal void AfterMoved(TreeNode node)
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{
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if (!node.isFolder)
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list.RemoveChild(node.cell);
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else
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HideFolderNode(node);
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int index = GetInsertIndexForNode(node);
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list.AddChildAt(node.cell, index);
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if (node.isFolder && node.expanded)
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CheckChildren(node, index);
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="folderNode"></param>
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/// <param name="index"></param>
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/// <returns></returns>
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int CheckChildren(TreeNode folderNode, int index)
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{
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int cnt = folderNode.numChildren;
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for (int i = 0; i < cnt; i++)
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{
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index++;
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TreeNode node = folderNode.GetChildAt(i);
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if (node.cell == null)
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CreateCell(node);
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if (node.cell.parent == null)
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list.AddChildAt(node.cell, index);
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if (node.isFolder && node.expanded)
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index = CheckChildren(node, index);
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}
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return index;
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="folderNode"></param>
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void HideFolderNode(TreeNode folderNode)
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{
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int cnt = folderNode.numChildren;
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for (int i = 0; i < cnt; i++)
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{
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TreeNode node = folderNode.GetChildAt(i);
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if (node.cell != null)
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{
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if (node.cell.parent != null)
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list.RemoveChild(node.cell);
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list.itemPool.ReturnObject(node.cell);
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node.cell.data = null;
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node.cell = null;
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}
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if (node.isFolder && node.expanded)
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HideFolderNode(node);
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}
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="node"></param>
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void RemoveNode(TreeNode node)
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{
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if (node.cell != null)
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{
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if (node.cell.parent != null)
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list.RemoveChild(node.cell);
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list.itemPool.ReturnObject(node.cell);
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node.cell.data = null;
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node.cell = null;
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}
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if (node.isFolder)
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{
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int cnt = node.numChildren;
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for (int i = 0; i < cnt; i++)
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{
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TreeNode node2 = node.GetChildAt(i);
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RemoveNode(node2);
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}
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}
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}
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void __clickExpandButton(EventContext context)
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{
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context.StopPropagation();
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GButton expandButton = (GButton)context.sender;
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TreeNode node = (TreeNode)expandButton.parent.data;
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if (list.scrollPane != null)
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{
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float posY = list.scrollPane.posY;
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if (expandButton.selected)
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node.expanded = true;
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else
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node.expanded = false;
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list.scrollPane.posY = posY;
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list.scrollPane.ScrollToView(node.cell);
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}
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else
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{
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if (expandButton.selected)
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node.expanded = true;
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else
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node.expanded = false;
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}
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}
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void __clickItem(EventContext context)
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{
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float posY = 0;
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if (list.scrollPane != null)
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posY = list.scrollPane.posY;
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TreeNode node = (TreeNode)((GObject)context.data).data;
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if (context.type == list.onRightClickItem.type)
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onRightClickNode.Call(node);
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else
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onClickNode.Call(node);
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if (list.scrollPane != null)
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{
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list.scrollPane.posY = posY;
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list.scrollPane.ScrollToView(node.cell);
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}
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}
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}
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}
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