using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Drawing;
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using System.Data;
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using System.Linq;
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using System.Text;
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using System.Windows.Forms;
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using DevExpress.XtraEditors;
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using DevExpress.XtraLayout.Utils;
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using DevExpress.Utils;
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using DevExpress.XtraTreeList.Nodes;
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namespace DPumpHydr.WinFrmUI.Volute
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{
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public partial class StepTreeListCtrl : XtraUserControl
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{
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public StepTreeListCtrl()
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{
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InitializeComponent();
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this.layoutControl1.AllowCustomization = false;//AllowCustomizationMenu
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this.layoutControl1.OptionsView.UseParentAutoScaleFactor = true;
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RegistEvents();
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}
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/// <summary>
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/// 步骤节点选择改变后事件
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/// </summary>
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public event Action<TreeStepNode,TreeStepNode> AfterStepNodeSelectedChangedEvent;
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/// <summary>
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/// 步骤节点选择改变前触发事件
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/// </summary>
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public event Func<TreeStepNode,TreeStepNode,bool> BeforeStepNodeSelectedChangedEvent;
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/// <summary>
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/// 选中的节点
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/// </summary>
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public TreeStepNode SelectedStepNode
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{
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get { return _selStepNode; }
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private set
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{
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var selStepNode = _selStepNode;
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_selStepNode = value;
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if (selStepNode == null)
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{
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if (_selStepNode != null)
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{
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if (this.AfterStepNodeSelectedChangedEvent != null)
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this.AfterStepNodeSelectedChangedEvent(selStepNode, _selStepNode);
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}
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}
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else if ( !System.Object.ReferenceEquals(selStepNode, _selStepNode))
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{
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if (this.AfterStepNodeSelectedChangedEvent != null)
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this.AfterStepNodeSelectedChangedEvent(selStepNode, _selStepNode);
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}
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this.treeList1.Refresh();
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}
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}
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private TreeStepNode _selStepNode = null;
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public List<TreeStepNode> GetStepSource()
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{
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return this.treeList1.DataSource as List<TreeStepNode>;
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}
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/// <summary>
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/// 设置步骤数据源
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/// </summary>
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/// <param name="value"></param>
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public void SetStepSource(List<TreeStepNode> value)
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{
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this.treeList1.DataSource = value;
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this.treeList1.RefreshDataSource();
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if (value == null || value.Count < 1)
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{
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_selStepNode = null;
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}
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else
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{
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this.treeList1.ExpandAll();
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if (!value.Contains(_selStepNode))
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{
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var firstStepNode = value.Find(x => x.AllowSelect);
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var focusedNode = this.treeList1.FindNodeByKeyID(firstStepNode.ID);
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this.treeList1.FocusedNode = focusedNode;
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this.SelectedStepNode = firstStepNode;
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}
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}
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}
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/// <summary>
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/// 设置步骤数据源
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/// </summary>
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/// <param name="list"></param>
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/// <param name="selStepNode"></param>
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public void SetStepSource(List<TreeStepNode> list,int ID)
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{
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this.treeList1.DataSource = list;
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this.treeList1.RefreshDataSource();
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if (list == null || list.Count < 1)
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{
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_selStepNode = null;
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}
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else
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{
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this.treeList1.ExpandAll();
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var selStepNode = list.Find(x => x.ID == ID && x.AllowSelect);
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if (selStepNode == null)
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{
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if(!list.Contains(_selStepNode))
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selStepNode = list.Find(x => x.AllowSelect);
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}
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if (selStepNode != null)
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{
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var focusedNode = this.treeList1.FindNodeByKeyID(selStepNode.ID);
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this.treeList1.FocusedNode = focusedNode;
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this.SelectedStepNode = selStepNode;
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}
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}
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}
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public void ResetStepSource(List<TreeStepNode> list)
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{
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this.treeList1.DataSource = list;
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this.treeList1.RefreshDataSource();
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}
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#region 私有方法
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//注册事件
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private void RegistEvents()
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{
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this.treeList1.GetSelectImage += (sender, e) =>
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{
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var ID = Convert.ToInt64(e.Node.GetValue("ID"));
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var stepNode = GetStepSource().Find(x => x.ID == ID);
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if (stepNode == null)
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return;
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switch (stepNode.DataState)
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{
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case TreeStepNode.eDataState.错误: e.NodeImageIndex = 0; break;
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case TreeStepNode.eDataState.正确: e.NodeImageIndex = 1; break;
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case TreeStepNode.eDataState.未知: e.NodeImageIndex = -1; break;
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default: break;
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}
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};
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this.treeList1.GetStateImage += (sender, e) =>
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{
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var ID = Convert.ToInt64(e.Node.GetValue("ID"));
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var stepNode = GetStepSource().Find(x => x.ID == ID);
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if (stepNode == null)
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return;
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switch (stepNode.ProgressState)
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{
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case TreeStepNode.eProgressState.未完成: e.NodeImageIndex = 0; break;
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case TreeStepNode.eProgressState.正在进行: e.NodeImageIndex = 1; break;
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case TreeStepNode.eProgressState.已完成: e.NodeImageIndex = 2; break;
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default: break;
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}
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};
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this.treeList1.BeforeFocusNode += (sender, e) =>
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{
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var nextStepID = Convert.ToInt64(e.Node.GetValue("ID"));
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var nextStepNode = GetStepSource().Find(x => x.ID == nextStepID);
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if (!nextStepNode.AllowSelect)
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{
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e.CanFocus = false;
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return;
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}
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if (_selStepNode != null)
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{
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if (_selStepNode.ID == nextStepNode.ID)
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return;
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}
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if (this.BeforeStepNodeSelectedChangedEvent != null)
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{
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TreeStepNode beforeStepNode = null;
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if (e.OldNode != null)
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{
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var beforeStepID = Convert.ToInt64(e.OldNode.GetValue("ID"));
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beforeStepNode = GetStepSource().Find(x => x.ID == beforeStepID);
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}
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if (!this.BeforeStepNodeSelectedChangedEvent(beforeStepNode, nextStepNode))
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{
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e.CanFocus = false;
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return;
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}
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}
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};
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this.treeList1.AfterFocusNode += (sender, e) =>
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{
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var ID = Convert.ToInt64(e.Node.GetValue("ID"));
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var nodeModel = GetStepSource().Find(x => x.ID == ID);
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this.SelectedStepNode = nodeModel;
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};
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this.treeList1.AfterExpand += (sender, e) =>
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{
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if (_selStepNode != null)
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{
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var node = this.treeList1.FindNodeByKeyID(_selStepNode.ID);
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if (e.Node.Nodes.Contains(node))
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this.treeList1.FocusedNode = node;
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}
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};
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}
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#endregion
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#region 公有方法
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/// <summary>
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/// 根据步骤ID聚焦节点
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/// </summary>
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/// <param name="StepNodeID"></param>
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public void SetFocusedNode(long StepNodeID)
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{
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var treeNode = this.treeList1.FindNodeByKeyID(StepNodeID);
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if (treeNode != null)
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this.treeList1.FocusedNode = treeNode;
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}
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/// <summary>
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/// 上一步
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/// </summary>
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public void GoPrev()
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{
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if (_selStepNode == null)
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return;
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var allCanSelStepNodes = GetStepSource().Where(x => x.AllowSelect).ToList();
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var index = allCanSelStepNodes.IndexOf(_selStepNode);
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if (index <= 0)
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return;
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var prevStepNode = allCanSelStepNodes[index - 1];
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var prevNode = this.treeList1.FindNodeByKeyID(prevStepNode.ID);
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this.treeList1.FocusedNode = prevNode;
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}
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/// <summary>
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/// 下一步
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/// </summary>
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public void GoNext()
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{
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if (_selStepNode == null)
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return;
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var allCanSelStepNodes = GetStepSource().Where(x => x.AllowSelect).ToList();
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var index = allCanSelStepNodes.IndexOf(_selStepNode);
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if (index == allCanSelStepNodes.Count - 1)
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{
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return;
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}
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var nextStepNode = allCanSelStepNodes[index + 1];
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var nextNode = this.treeList1.FindNodeByKeyID(nextStepNode.ID);
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this.treeList1.FocusedNode = nextNode;
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}
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#endregion
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}
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}
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