private async Task InstructListRenderingAsync(XElement list, Dictionary <string, string> valuesByReference)
{
AssertElementName(list, "list");
_context = _context.BeforeBegin(list.Name.LocalName, hasContent: list.HasContent());
var listNestingLevel = _context.ListNestingLevel;
if (!_listItemIndexContinueOffsetByNestingLevel.TryGetValue(listNestingLevel, out int listItemIndexContinueOffset))
{
_listItemIndexContinueOffsetByNestingLevel[listNestingLevel] = listItemIndexContinueOffset = 0;
}
var startAttribute = list.Attributes().FirstOrDefault(a => a.Name == "start");
if (startAttribute == null || startAttribute.Value != "continue")
{
_listItemIndexContinueOffsetByNestingLevel[listNestingLevel] = listItemIndexContinueOffset = 0;
}
await _builder.BeginWriteListAsync(listItemIndexContinueOffset, _context);
_context = _context.AfterBegin();
var listItems = list.Elements().ToList();
var conditionallyExcludedListItems = 0;
for (var i = 0; i < listItems.Count; i++)
{
var listItem = listItems[i];
AssertElementName(listItem, "list-item");
await WriteConditionalElementAsync(
listItem,
valuesByReference,
async() =>
{
int continuedListIndex = listItemIndexContinueOffset + i - conditionallyExcludedListItems;
_context = _context.BeforeBeginListItem(continuedListIndex, hasChildren: listItem.HasContent());
await _builder.BeginWriteListItemAsync(new ListIndexPath(_context.ListItemIndexPath), _context);
_context = _context.AfterBegin();
await TraverseContainerElementAsync(listItem, valuesByReference);
_context = _context.BeforeEnd();
await _builder.EndWriteListItemAsync(_context);
_context = _context.AfterEndListItem();
},
() => conditionallyExcludedListItems ++);
}
_context = _context.BeforeEnd();
await _builder.EndWriteListAsync(_context);
_context = _context.AfterEnd();
_listItemIndexContinueOffsetByNestingLevel[listNestingLevel] += listItems.Count;
}
private async Task InstructBlockRenderingAsync(XElement block, Dictionary <string, string> valuesByReference)
{
AssertElementName(block, "block");
_context = _context.BeforeBegin(block.Name.LocalName, hasContent: block.HasContent());
await _builder.BeginWriteBlockAsync(_context);
_context = _context.AfterBegin();
await TraverseContainerElementAsync(block, valuesByReference);
_context = _context.BeforeEnd();
await _builder.EndWriteBlockAsync(_context);
_context = _context.AfterEnd();
}
private async Task InstructPageRenderingAsync(XElement page, Dictionary <string, string> valuesByReference)
{
AssertElementName(page, "page");
_context = _context.BeforeBegin(page.Name.LocalName, hasContent: page.HasContent());
await _builder.BeginWritePageAsync(_context);
_context = _context.AfterBegin();
await TraverseContainerElementAsync(page, valuesByReference);
_context = _context.BeforeEnd();
await _builder.EndWritePageAsync(_context);
_context = _context.AfterEnd();
}
public async Task InstructRenderingAsync(string markup, DocumentRenderModel model, IDocumentBuilderV1 builder)
{
if (_context != null)
{
throw new InvalidOperationException();
}
_context = new DocumentInstructionContextV1();
_builder = builder;
_model = model;
_listItemIndexContinueOffsetByNestingLevel = new Dictionary <int, int>();
XDocument document = null;
using (var sr = new StringReader(markup))
{
document = XDocument.Load(sr);
}
var root = document.Root;
var valuesByReference = _model.Items.ToDictionary(i => i.Reference, i => i.Value);
_context = _context.BeforeBegin(document.Root.Name.LocalName, hasContent: document.Root.HasContent());
await builder.BeginWriteDocumentAsync(model, _context);
_context = _context.AfterBegin();
foreach (var page in root.Elements())
{
await WriteConditionalElementAsync(page, valuesByReference, async() =>
{
await InstructPageRenderingAsync(page, valuesByReference);
});
}
_context = _context.BeforeEnd();
await builder.EndWriteDocumentAsync(_context);
_context = _context.AfterEnd();
}
private async Task InstructWriteTextAsync(string text, string reference = null)
{
if (Regex.Match(text, @"^\s").Success)
{
if (_context.IsFirstChild || _context.IsPreviousSiblingBlockLike)
{
text = text.TrimStart();
}
else
{
text = " " + text.TrimStart();
}
}
if (Regex.Match(text, @"\s$").Success)
{
text = text.TrimEnd() + " ";
}
_context = _context.BeforeBegin("text", hasContent: false);
await _builder.WriteTextAsync(text, _includeMetadata?reference : null, _context);
_context = _context.AfterBegin().BeforeEnd().AfterEnd();
}