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重写:Rows#region 重写:Rows
private TreeListViewRowCollection _rowsCollection;
[Browsable(false)]
public new TreeListViewRowCollection Rows
{
get
{
ArrayList _rowsArray = new ArrayList();
for (int i = 0; i < base.Rows.Count; i++)
{
_rowsArray.Add((TreeListViewRow)base.Rows[i]);
}
this._rowsCollection = new TreeListViewRowCollection(_rowsArray);
return this._rowsCollection;
}
}
#endregion
重载:OnInit#region 重载:OnInit
protected override void OnInit(EventArgs e)
{
base.OnInit(e);
Page.RegisterRequiresPostBack(this);
if (!Page.ClientScript.IsClientScriptIncludeRegistered("JS_TreeListView"))
{
this.Page.ClientScript.RegisterClientScriptInclude(this.GetType(), "JS_TreeListView", Page.ClientScript.GetWebResourceUrl(this.GetType(), "GoldMantis.Web.UI.Resource.TreeListView.JS_TreeListView.js"));
}
}
#endregion
IPostBackDataHandler Members#region IPostBackDataHandler Members
public bool LoadPostData(string postDataKey, NameValueCollection postCollection)
{
return false;
}
public void RaisePostDataChangedEvent()
{
}
#endregion
方法:RenderCheckBoxExField#region 方法:RenderCheckBoxExField
/**//// <summary>
/// 处理CheckBoxExField类型的列
/// </summary>
private void RenderCheckBoxExField()
{
if (!this.ShowHeader && !this.ShowFooter)
{
return;
}
foreach (DataControlField field in Columns)
{
if (field is CheckBoxExField)
{
int checkBoxExFieldIndex = Columns.IndexOf(field) + this.GetAutoGenerateButtonCount();
foreach (GridViewRow row in Rows)
{
if (row.RowType == DataControlRowType.Header)
{
row.Cells[checkBoxExFieldIndex].Controls.Clear();
}
if (row.RowType == DataControlRowType.DataRow)
{
row.Cells[checkBoxExFieldIndex].Controls[0].ID = "cbChoose";
((CheckBox)row.Cells[checkBoxExFieldIndex].Controls[0]).Attributes.Add("onclick", "ChooseTree(this);");
}
}
注册脚本#region 注册脚本
string script = @"
var modifyId = """" ;
var choosedId = """";
var choosedIndex;
function ChooseTree(obj)
{
var cTrId = obj.parentElement.parentElement.parentElement.id;
var treeTable = document.getElementById("""+this.ClientID+@""");
for( var i = 0; i < treeTable.rows.length; i++ )
{
if( treeTable.rows[i].id.indexOf(cTrId) != -1 && treeTable.rows[i].id != cTrId )
{
document.getElementById(treeTable.rows[i].id+""_cbChoose"").checked = obj.checked;
}
}
choosedId = """";
choosedIndex = new Array();
for( var i = 1; i < treeTable.rows.length; i++ )
{
if( document.getElementById(treeTable.rows[i].id+""_cbChoose"").checked )
{
choosedId += treeTable.rows[i].id.substring(treeTable.rows[i].id.lastIndexOf(""/"")+1) + "","";
choosedIndex.push(i);
}
}
choosedId = choosedId.substring(0,choosedId.length-1);
}";
if (!Page.ClientScript.IsStartupScriptRegistered("TreeListView_CheckBoxExField"))
{
Page.ClientScript.RegisterStartupScript(GetType(), "TreeListView_CheckBoxExField", script, true);
}
#endregion
}
}
}
方法:GetAutoGenerateButtonCount#region 方法:GetAutoGenerateButtonCount
private int GetAutoGenerateButtonCount()
{
int num = 0;
if (this.AutoGenerateDeleteButton || this.AutoGenerateEditButton || this.AutoGenerateSelectButton)
{
num = 1;
}
return num;
}
#endregion
#endregion
protected override void Render(HtmlTextWriter writer)
{
RenderCheckBoxExField();
base.Render(writer);
}
}
public class TreeListViewRow : GridViewRow
{
public TreeListViewRow(int rowIndex, int dataItemIndex, DataControlRowType rowType, DataControlRowState rowState)
: base(rowIndex, dataItemIndex, rowType, rowState)
{
}
protected override void OnPreRender(EventArgs e)
{
base.OnPreRender(e);
if (this.RowType == DataControlRowType.DataRow)
{
if (this.Parent.Parent is TreeListView)
{
TreeListView treeListView = this.Parent.Parent as TreeListView;
DataRow dr = ((DataTable)treeListView.DataSource).Rows[this.DataItemIndex] as DataRow;
string str = GetTreeNodeImg(dr, Convert.ToBoolean(dr["TreeListView$Row$IsLeaf"]), Convert.ToBoolean(dr["TreeListView$Row$IsBottom"]));
this.Cells[treeListView.NodeColumnIndex].Text = str + this.Cells[treeListView.NodeColumnIndex].Text;
this.ID = dr["TreeList$ViewRow$ClientID"].ToString();
if (treeListView.ExpendDepth > 0)
{
this.Style["display"] = treeListView.ExpendDepth >= Convert.ToInt32(dr["TreeListView$Row$Depth"]) ? "block" : "none";
}
}
}
}
获取Tree的图片#region 获取Tree的图片
string GetTreeNodeImg(DataRow dr, bool isLeaf, bool isBottom)
{
return GetTreeNodeOtherImg(dr) + GetTreeNodeLastImg(isLeaf, isBottom);
}
string GetTreeNodeOtherImg(DataRow dr)
{
if (dr["TreeListView$Row$ParentRow"] != null&&!dr["TreeListView$Row$ParentRow"].Equals(DBNull.Value))
{
DataRow drParentRow = dr["TreeListView$Row$ParentRow"] as DataRow;
bool parentIsBottom = Convert.ToBoolean(drParentRow["TreeListView$Row$IsBottom"]);
if (parentIsBottom)
{
return GetTreeNodeOtherImg(drParentRow) + string.Format("<img src={0} align=absmiddle>", TreeListView.TreeImageFolder + "white.gif");
}
else
{
return GetTreeNodeOtherImg(drParentRow) + string.Format("<img src={0} align=absmiddle>", TreeListView.TreeImageFolder + "i.gif");
}
}
else
{
return string.Empty;
}
}
string GetTreeNodeLastImg(bool isLeaf, bool isBottom)
{
//最后靠近的那个Image
string lastImg = string.Empty;
if (isLeaf)
{
if (isBottom)
{
lastImg = string.Format("<img src={0} align=absmiddle>", TreeListView.TreeImageFolder + "l.gif");
}
else
{
lastImg = string.Format("<img src={0} align=absmiddle>",TreeListView.TreeImageFolder + "t.gif");
}
}
else
{
if (isBottom)
{
lastImg = string.Format("<img src={0} align=absmiddle onclick='ClickNode(this,true,\"{1}\");' style=\"cursor: hand\">", TreeListView.TreeImageFolder + "lminus.gif", this.Parent.Parent.ClientID);
}
else
{
lastImg = string.Format("<img src={0} align=absmiddle onclick='ClickNode(this,true,\"{1}\");' style=\"cursor: hand\">", TreeListView.TreeImageFolder + "tminus.gif", this.Parent.Parent.ClientID);
}
}
return lastImg;
}
#endregion
Js代码实现折叠效果
Code
var lExpend = "lminus.gif";
var lPinch = "lplus.gif";
var tExpend = "tminus.gif";
var tPinch = "tplus.gif";
function ClickNode(img,isBottom,tableId)
{
var imgId = img.src.substring(img.src.lastIndexOf("/")+1);
var url = img.src.substring(0,img.src.lastIndexOf("/")+1);
var oldTrId = img.parentElement.parentElement.id;
var newTrId = oldTrId.substring(oldTrId.indexOf("_")+1);
if( isBottom)
{
if( imgId == lExpend)
{
img.src = url+ lPinch;
img.parentElement.id = lPinch;
PinchNode(newTrId,oldTrId,tableId);
}
else
{
img.src = url + lExpend;
img.parentElement.id = lExpend;
ExpendNode(newTrId,oldTrId,tableId);
}
}
else
{
if( imgId == tExpend )
{
img.src = url+ tPinch;
img.parentElement.id = tPinch;
PinchNode(newTrId,oldTrId,tableId);
}
else
{
img.src = url + tExpend;
img.parentElement.id = tExpend;
ExpendNode(newTrId,oldTrId,tableId);
}
}
}
function ExpendNode(newId,oldId,tableId)
{
var tree = document.getElementById(tableId);
for( var i = 0; i < tree.rows.length; i++ )
{
if( tree.rows[i].id.indexOf(newId) != -1 && tree.rows[i].id != oldId )
{
var isExpend = true;
var pId = tree.rows[i].id;
while( pId != oldId)
{
for( var j = 0; j < 2; j++ )
pId = pId.substring( 0,pId.lastIndexOf("/"));
var parent = document.getElementById(pId);
if( parent != null )
{
var tempId = parent.cells[2].id;
if( tempId == lExpend || tempId == tExpend || tempId == "")
;
else
{
isExpend = false;
break;
}
}
else
break;
}
if( isExpend )
tree.rows[i].style.display="block";
}
}
}
function PinchNode(newId,oldId,tableId)
{
var tree = document.getElementById(tableId);
for( var i = 0; i < tree.rows.length; i++ )
{
if( tree.rows[i].id.indexOf(newId) != -1 && tree.rows[i].id != oldId)
{
tree.rows[i].style.display = "none";
}
}
}
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