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* UControl: UITreeView增加了一个刷新节点状态的扩展函数

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Sunny 2024-11-06 14:33:31 +08:00
parent 63952daa11
commit 76b13321e6
2 changed files with 24 additions and 17 deletions
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39
SunnyUI/Common/UControl.cs
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@ -18,6 +18,7 @@
* *
* 2020-01-01: V2.2.0 增加文件说明 * 2020-01-01: V2.2.0 增加文件说明
* 2023-04-02: V3.3.4 修复关闭弹窗null的Bug * 2023-04-02: V3.3.4 修复关闭弹窗null的Bug
* 2024-11-06: V3.7.2 UITreeView增加了一个刷新节点状态的扩展函数
******************************************************************************/ ******************************************************************************/
using System; using System;
@ -530,32 +531,38 @@ namespace Sunny.UI
/// <returns>全选状态(Checked),半选状态(Indeterminate),未选状态(Unchecked)</returns> /// <returns>全选状态(Checked),半选状态(Indeterminate),未选状态(Unchecked)</returns>
public static CheckState CheckState(this TreeNode node) public static CheckState CheckState(this TreeNode node)
{ {
if (GetChildNodeCheckedState(node)) if (node.Nodes.Count > 0)
{ {
return System.Windows.Forms.CheckState.Indeterminate; var count = node.Nodes.Cast<TreeNode>().Where(n => n.Checked).ToList().Count;
if (count == 0)
{
return System.Windows.Forms.CheckState.Unchecked;
}
else if (count == node.Nodes.Count)
{
return System.Windows.Forms.CheckState.Checked;
}
else
{
return System.Windows.Forms.CheckState.Indeterminate;
}
} }
return node.Checked ? System.Windows.Forms.CheckState.Checked : System.Windows.Forms.CheckState.Unchecked; return node.Checked ? System.Windows.Forms.CheckState.Checked : System.Windows.Forms.CheckState.Unchecked;
} }
private static bool GetChildNodeCheckedState(TreeNode node) public static void RefreshCheckState(this TreeNode node)
{ {
if (node.TreeView is not UITreeView.TreeViewEx tv) return;
System.Windows.Forms.CheckState state = node.CheckState();
if (node.Nodes.Count > 0) if (node.Nodes.Count > 0)
{ {
var count = node.Nodes.Cast<TreeNode>().Where(n => n.Checked).ToList().Count; if (state == System.Windows.Forms.CheckState.Checked && !node.Checked) node.Checked = true;
if (count > 0 && count < node.Nodes.Count) if (state == System.Windows.Forms.CheckState.Unchecked && node.Checked) node.Checked = false;
{
return true;
}
else
{
foreach (TreeNode nd in node.Nodes)
{
return GetChildNodeCheckedState(nd);
}
}
} }
return false;
tv.DicNodeStatus[node.GetHashCode()] = state == System.Windows.Forms.CheckState.Indeterminate;
tv.Invalidate();
} }
public static void Disabled(this Control ctrl) public static void Disabled(this Control ctrl)

2
SunnyUI/Controls/UITreeView.cs
View File

@ -1416,7 +1416,7 @@ namespace Sunny.UI
base.WndProc(ref m); base.WndProc(ref m);
} }
private Dictionary<int, bool> DicNodeStatus = new Dictionary<int, bool>(); internal Dictionary<int, bool> DicNodeStatus = new Dictionary<int, bool>();
protected override void OnAfterCheck(TreeViewEventArgs e) protected override void OnAfterCheck(TreeViewEventArgs e)
{ {