private RenderTreeFrame[] ParseFragments(RenderTreeBuilder builder, int sequence)
{
ArrayRange <RenderTreeFrame> frames = builder.GetFrames();
List <Tuple <string, RenderFragment> > parms = new List <Tuple <string, RenderFragment> >();
for (int a = 0; a < frames.Count; a++)
{
RenderTreeFrame item = frames.Array[a];
if ((item.FrameType == RenderTreeFrameType.Component) && (item.ComponentType.Equals(typeof(ContentProperty))))
{
RenderTreeFrame item1 = frames.Array[a + 1];
if ((item1.FrameType == RenderTreeFrameType.Attribute) && (item1.AttributeName == "Name") && (item1.AttributeValue is string propertyName))
{
RenderTreeFrame item2 = frames.Array[a + 2];
if ((item2.FrameType == RenderTreeFrameType.Attribute) && (item2.AttributeName == RenderTreeBuilderHelper.ChildContent) && (item2.AttributeValue is RenderFragment splitPartChildContent))
{
parms.Add(new Tuple <string, RenderFragment>(propertyName, splitPartChildContent));
}
}
a += 2;
}
}
RenderTreeFrame[] result = new RenderTreeFrame[parms.Count];
int b = 0;
foreach (Tuple <string, RenderFragment> item in parms)
{
result[b] = RenderTreeFrameHelper.Attribute(sequence + b, item.Item1, item.Item2);
b++;
}
return(result);
}
void ReplaceChildContent(ref ParameterView parameters)
{
RenderTreeFrame[] frames = ParameterCollectionHelper.GetFrames(parameters);
int lastContentBlazorComponentPos = -1;
int pos = 0;
foreach (RenderTreeFrame frame in frames)
{
if (frame.FrameType == RenderTreeFrameType.Component)
{
lastContentBlazorComponentPos = typeof(ContentsComponentBase).IsAssignableFrom(frame.ComponentType) ? pos : -1;
}
else if ((lastContentBlazorComponentPos != -1) && //check we have right component type
(frame.FrameType == RenderTreeFrameType.Attribute) && (frame.AttributeName == RenderTreeBuilderHelper.ChildContent) && //we have to replace ChildContent only...
(frame.AttributeValue is RenderFragment childContent) && //...of right (RenderFragment) type...
(pos > lastContentBlazorComponentPos) && (pos < lastContentBlazorComponentPos + frames[lastContentBlazorComponentPos].ComponentSubtreeLength)) //...and within the component scope
{
List <RenderTreeFrame> framesEdit = new List <RenderTreeFrame>(frames);
//setup new rendering for childContent
RenderTreeBuilder rtb = new RenderTreeBuilder();
childContent(rtb);
RenderTreeFrame[] newFrames = ParseFragments(rtb, frames[pos].Sequence);
//tune component length
RenderTreeFrame fe = framesEdit[lastContentBlazorComponentPos];
RenderTreeFrameHelper.SetComponentSubtreeLength(ref fe, framesEdit[lastContentBlazorComponentPos].ComponentSubtreeLength + newFrames.Length - 1);
framesEdit[lastContentBlazorComponentPos] = fe;
//replace ChildContent frame with contents
framesEdit.RemoveAt(pos);
framesEdit.InsertRange(pos, newFrames);
ParameterCollectionHelper.SetFrames(ref parameters, framesEdit.ToArray());
break;
}
pos++;
}
}
