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Added support to DynamicNodeWalker for finding nodes that are Up/Down/Previous/Next by NodeTypeAlias

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Up and down are similar to Ancestors(string nodeTypeAlias)/Descendants(string nodeTypeAlias) but return the first match
This commit is contained in:
agrath@gmail.com
2011-03-08 19:42:59 -13:00
parent d7e83cb1ee
commit a02aca0f62
2 changed files with 104 additions and 1 deletions
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18
umbraco.MacroEngines.Juno/RazorDynamicNode/DynamicNode.cs
View File

@@ -69,6 +69,10 @@ namespace umbraco.MacroEngines
{
return DynamicNodeWalker.Up(this, number);
}
public DynamicNode Up(string nodeTypeAlias)
{
return DynamicNodeWalker.Up(this, nodeTypeAlias);
}
public DynamicNode Down()
{
return DynamicNodeWalker.Down(this);
@@ -77,6 +81,10 @@ namespace umbraco.MacroEngines
{
return DynamicNodeWalker.Down(this, number);
}
public DynamicNode Down(string nodeTypeAlias)
{
return DynamicNodeWalker.Down(this, nodeTypeAlias);
}
public DynamicNode Next()
{
return DynamicNodeWalker.Next(this);
@@ -85,6 +93,11 @@ namespace umbraco.MacroEngines
{
return DynamicNodeWalker.Next(this, number);
}
public DynamicNode Next(string nodeTypeAlias)
{
return DynamicNodeWalker.Next(this, nodeTypeAlias);
}
public DynamicNode Previous()
{
return DynamicNodeWalker.Previous(this);
@@ -93,7 +106,10 @@ namespace umbraco.MacroEngines
{
return DynamicNodeWalker.Previous(this, number);
}
public DynamicNode Previous(string nodeTypeAlias)
{
return DynamicNodeWalker.Previous(this, nodeTypeAlias);
}
public DynamicNodeList GetChildrenAsList
{
get

87
umbraco.MacroEngines.Juno/RazorDynamicNode/DynamicNodeWalker.cs
View File

@@ -24,6 +24,19 @@ namespace umbraco.MacroEngines
return context;
}
}
public static DynamicNode Up(this DynamicNode context, string nodeTypeAlias)
{
if (string.IsNullOrEmpty(nodeTypeAlias))
{
return context.Parent;
}
else
{
while ((context = context.Parent) != null && context.NodeTypeAlias != nodeTypeAlias) ;
return context;
}
}
public static DynamicNode Down(this DynamicNode context)
{
return context.Down(0);
@@ -46,6 +59,19 @@ namespace umbraco.MacroEngines
return working;
}
}
public static DynamicNode Down(this DynamicNode context, string nodeTypeAlias)
{
if (string.IsNullOrEmpty(nodeTypeAlias))
{
DynamicNodeList children = new DynamicNodeList(context.ChildrenAsList);
return children.Items.First();
}
else
{
return context.Descendants(nodeTypeAlias).Items.FirstOrDefault();
}
}
public static DynamicNode Next(this DynamicNode context)
{
return context.Next(0);
@@ -75,6 +101,36 @@ namespace umbraco.MacroEngines
throw new ArgumentNullException(string.Format("Node {0} has been orphaned and doesn't belong to a DynamicNodeList", context.Id));
}
}
public static DynamicNode Next(this DynamicNode context, string nodeTypeAlias)
{
if (context.ownerList == null && context.Parent != null)
{
var list = context.Parent.ChildrenAsList.ConvertAll(n => new DynamicNode(n));
context.ownerList = new DynamicNodeList(list);
}
if (context.ownerList != null)
{
List<DynamicNode> container = context.ownerList.Items.ToList();
int currentIndex = container.FindIndex(n => n.Id == context.Id);
if (currentIndex != -1)
{
int newIndex = container.FindIndex(currentIndex, n => n.NodeTypeAlias == nodeTypeAlias);
if (newIndex != -1)
{
return container.ElementAt(newIndex);
}
return null;
}
else
{
throw new IndexOutOfRangeException(string.Format("Node {0} belongs to a DynamicNodeList but could not retrieve the index for it's position in the list", context.Id));
}
}
else
{
throw new ArgumentNullException(string.Format("Node {0} has been orphaned and doesn't belong to a DynamicNodeList", context.Id));
}
}
public static DynamicNode Previous(this DynamicNode context)
{
return context.Previous(0);
@@ -104,5 +160,36 @@ namespace umbraco.MacroEngines
throw new ArgumentNullException(string.Format("Node {0} has been orphaned and doesn't belong to a DynamicNodeList", context.Id));
}
}
public static DynamicNode Previous(this DynamicNode context, string nodeTypeAlias)
{
if (context.ownerList == null && context.Parent != null)
{
var list = context.Parent.ChildrenAsList.ConvertAll(n => new DynamicNode(n));
context.ownerList = new DynamicNodeList(list);
}
if (context.ownerList != null)
{
List<DynamicNode> container = context.ownerList.Items.ToList();
int currentIndex = container.FindIndex(n => n.Id == context.Id);
if (currentIndex != -1)
{
var previousNodes = container.Take(currentIndex).ToList();
int newIndex = previousNodes.FindIndex(n => n.NodeTypeAlias == nodeTypeAlias);
if (newIndex != -1)
{
return container.ElementAt(newIndex);
}
return null;
}
else
{
throw new IndexOutOfRangeException(string.Format("Node {0} belongs to a DynamicNodeList but could not retrieve the index for it's position in the list", context.Id));
}
}
else
{
throw new ArgumentNullException(string.Format("Node {0} has been orphaned and doesn't belong to a DynamicNodeList", context.Id));
}
}
}
}