121 lines
4.4 KiB
JavaScript
121 lines
4.4 KiB
JavaScript
// Material sourced from the bluePortal project (http://blueportal.codeplex.com).
|
|
// Licensed under the Microsoft Public License (available at http://www.opensource.org/licenses/ms-pl.html).
|
|
|
|
var collapseClass = "AspNet-TreeView-Collapse";
|
|
var expandClass = "AspNet-TreeView-Expand";
|
|
var showClass = "AspNet-TreeView-Show";
|
|
var hideClass = "AspNet-TreeView-Hide";
|
|
|
|
function IsExpanded__AspNetTreeView(element)
|
|
{
|
|
return (HasClass__CssFriendlyAdapters(element, collapseClass));
|
|
}
|
|
|
|
function TogglePlusMinus__AspNetTreeView(element, showPlus)
|
|
{
|
|
if (HasAnyClass__CssFriendlyAdapters(element))
|
|
{
|
|
var showPlusLocal = IsExpanded__AspNetTreeView(element);
|
|
if ((typeof(showPlus) != "undefined") && (showPlus != null))
|
|
{
|
|
showPlusLocal = showPlus;
|
|
}
|
|
var oldClass = showPlusLocal ? collapseClass : expandClass;
|
|
var newClass = showPlusLocal ? expandClass : collapseClass;
|
|
SwapClass__CssFriendlyAdapters(element, oldClass, newClass);
|
|
}
|
|
}
|
|
|
|
function ToggleChildrenDisplay__AspNetTreeView(element, collapse)
|
|
{
|
|
if ((element != null) && (element.parentNode != null) && (element.parentNode.getElementsByTagName != null))
|
|
{
|
|
var childrenToHide = element.parentNode.getElementsByTagName("ul");
|
|
var oldClass = collapse ? showClass : hideClass;
|
|
var newClass = collapse ? hideClass : showClass;
|
|
for (var i=0; i<childrenToHide.length; i++)
|
|
{
|
|
if ((childrenToHide[i].parentNode != null) && (childrenToHide[i].parentNode == element.parentNode))
|
|
{
|
|
SwapOrAddClass__CssFriendlyAdapters(childrenToHide[i], oldClass, newClass);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
function ExpandCollapse__AspNetTreeView(sourceElement)
|
|
{
|
|
if (HasAnyClass__CssFriendlyAdapters(sourceElement))
|
|
{
|
|
var expanded = IsExpanded__AspNetTreeView(sourceElement);
|
|
TogglePlusMinus__AspNetTreeView(sourceElement, expanded);
|
|
ToggleChildrenDisplay__AspNetTreeView(sourceElement, expanded);
|
|
}
|
|
}
|
|
|
|
function GetViewState__AspNetTreeView(id)
|
|
{
|
|
var retStr = "";
|
|
if ((typeof(id) != "undefined") && (id != null) && (document.getElementById(id) != null))
|
|
{
|
|
var topUL = document.getElementById(id);
|
|
retStr = ComposeViewState__AspNetTreeView(topUL, "");
|
|
}
|
|
return retStr;
|
|
}
|
|
|
|
function ComposeViewState__AspNetTreeView(element, state)
|
|
{
|
|
var child = element.firstChild;
|
|
var bConsiderChildren = true;
|
|
|
|
// The following line must be changed if you alter the TreeView adapters generation of
|
|
// markup such that the first child within the LI no longer is the expand/collapse <span>.
|
|
if ((element.tagName == "LI") && (child != null))
|
|
{
|
|
var expandCollapseSPAN = null;
|
|
var currentChild = child;
|
|
while (currentChild != null)
|
|
{
|
|
if ((currentChild.tagName == "SPAN") &&
|
|
(currentChild.className != null) &&
|
|
((currentChild.className.indexOf(collapseClass) > -1) ||
|
|
(currentChild.className.indexOf(expandClass) > -1)))
|
|
{
|
|
expandCollapseSPAN = currentChild;
|
|
break;
|
|
}
|
|
currentChild = currentChild.nextSibling;
|
|
}
|
|
|
|
if (expandCollapseSPAN != null)
|
|
{
|
|
if (expandCollapseSPAN.className.indexOf(collapseClass) > -1)
|
|
{
|
|
// If the "collapse" class is currently being used then the "collapse" icon is, presumably, being shown.
|
|
// In other words, the node itself is actually expanded at the present moment (which is why you now
|
|
// have the option of collapsing it. So we mark it as an "expanded" node for purposes of the view state
|
|
// we are now accumulating.
|
|
state += "e";
|
|
}
|
|
else if (expandCollapseSPAN.className.indexOf(expandClass) > -1)
|
|
{
|
|
// This part of the tree is collapsed so we don't need to consider its children.
|
|
bConsiderChildren = false;
|
|
state += "n";
|
|
}
|
|
}
|
|
}
|
|
|
|
if (bConsiderChildren && (child != null))
|
|
{
|
|
state = ComposeViewState__AspNetTreeView(child, state);
|
|
}
|
|
|
|
if (element.nextSibling != null)
|
|
{
|
|
state = ComposeViewState__AspNetTreeView(element.nextSibling, state);
|
|
}
|
|
|
|
return state;
|
|
}
|