public void HandleTag(bool opening, string tag, Android.Text.IEditable output, IXMLReader xmlReader)
{
if (opening)
{
// opening tag
// if (HtmlTextView.DEBUG) {
// Log.d(HtmlTextView.TAG, "opening, output: " + output.ToString());
// }
if (tag.ToLower() == "ul")
{
lists.Push(tag);
}
else if (tag.EqualsIgnoreCase("ol"))
{
lists.Push(tag);
olNextIndex.Push(1);
}
else if (tag.EqualsIgnoreCase("li"))
{
if (output.Length() > 0 && output.CharAt(output.Length() - 1) != '\n')
{
output.Append("\n");
}
var parentList = lists.Peek();
if (parentList.EqualsIgnoreCase("ol"))
{
Start(output, new Ol());
output.Append(olNextIndex.Peek().ToString()).Append('.').Append(' ');
olNextIndex.Push(olNextIndex.Pop() + 1);
}
else if (parentList.EqualsIgnoreCase("ul"))
{
Start(output, new Ul());
}
}
else if (tag.EqualsIgnoreCase("code"))
{
Start(output, new Code());
}
else if (tag.EqualsIgnoreCase("center"))
{
Start(output, new Center());
}
else if (tag.EqualsIgnoreCase("s") || tag.EqualsIgnoreCase("strike"))
{
Start(output, new Strike());
}
}
else
{
// closing tag
// if (HtmlTextView.DEBUG) {
// Log.d(HtmlTextView.TAG, "closing, output: " + output.ToString());
// }
if (tag.EqualsIgnoreCase("ul"))
{
lists.Pop();
}
else if (tag.EqualsIgnoreCase("ol"))
{
lists.Pop();
olNextIndex.Pop();
}
else if (tag.EqualsIgnoreCase("li"))
{
if (lists.Peek().EqualsIgnoreCase("ul"))
{
if (output.Length() > 0 && output.CharAt(output.Length() - 1) != '\n')
{
output.Append("\n");
}
// Nested BulletSpans increases distance between bullet and Text, so we must prevent it.
int bulletMargin = indent;
if (lists.Count > 1)
{
bulletMargin = indent - bullet.GetLeadingMargin(true);
if (lists.Count > 2)
{
// This get's more complicated when we add a LeadingMarginSpan into the same line:
// we have also counter it's effect to BulletSpan
bulletMargin -= (lists.Count - 2) * listItemIndent;
}
}
BulletSpan newBullet = new BulletSpan(bulletMargin);
End(
output,
typeof(Ul),
false,
new LeadingMarginSpanStandard(listItemIndent * (lists.Count - 1)),
newBullet);
}
else if (lists.Peek().EqualsIgnoreCase("ol"))
{
if (output.Length() > 0 && output.CharAt(output.Length() - 1) != '\n')
{
output.Append("\n");
}
int numberMargin = listItemIndent * (lists.Count - 1);
if (lists.Count > 2)
{
// Same as in ordered lists: counter the effect of nested Spans
numberMargin -= (lists.Count - 2) * listItemIndent;
}
End(output, typeof(Ol), false, new LeadingMarginSpanStandard(numberMargin));
}
}
else if (tag.EqualsIgnoreCase("code"))
{
End(output, typeof(Code), false, new TypefaceSpan("monospace"));
}
else if (tag.EqualsIgnoreCase("center"))
{
End(output, typeof(Center), true, new AlignmentSpanStandard(Layout.Alignment.AlignCenter));
}
else if (tag.EqualsIgnoreCase("s") || tag.EqualsIgnoreCase("strike"))
{
End(output, typeof(Strike), false, new StrikethroughSpan());
}
}
}
private static void HandleFormatRun(ISpannable spannableString, IAttributedTextRun run)
{
var attributes = run.Attributes;
var start = run.Start;
var end = start + run.Length;
var fontName = attributes.GetFontName();
if (fontName != null)
{
var typefaceSpan = new TypefaceSpan(fontName);
spannableString.SetSpan(typefaceSpan, start, end, SpanTypes.ExclusiveExclusive);
}
if (attributes.GetBold() && attributes.GetItalic())
{
var span = new StyleSpan(TypefaceStyle.BoldItalic);
spannableString.SetSpan(span, start, end, SpanTypes.ExclusiveExclusive);
}
else if (attributes.GetBold())
{
var span = new StyleSpan(TypefaceStyle.Bold);
spannableString.SetSpan(span, start, end, SpanTypes.ExclusiveExclusive);
}
else if (attributes.GetItalic())
{
var span = new StyleSpan(TypefaceStyle.Italic);
spannableString.SetSpan(span, start, end, SpanTypes.ExclusiveExclusive);
}
if (attributes.GetUnderline())
{
var span = new UnderlineSpan();
spannableString.SetSpan(span, start, end, SpanTypes.ExclusiveExclusive);
}
var foregroundColor = attributes.GetForegroundColor()?.ParseAsInts()?.ToColor();
if (foregroundColor != null)
{
var span = new ForegroundColorSpan((global::Android.Graphics.Color)foregroundColor);
spannableString.SetSpan(span, start, end, SpanTypes.ExclusiveExclusive);
}
var backgroundColor = attributes.GetBackgroundColor()?.ParseAsInts()?.ToColor();
if (backgroundColor != null)
{
var span = new BackgroundColorSpan((global::Android.Graphics.Color)backgroundColor);
spannableString.SetSpan(span, start, end, SpanTypes.ExclusiveExclusive);
}
if (attributes.GetSubscript())
{
var span = new SubscriptSpan();
spannableString.SetSpan(span, start, end, SpanTypes.ExclusiveExclusive);
}
if (attributes.GetSuperscript())
{
var span = new SuperscriptSpan();
spannableString.SetSpan(span, start, end, SpanTypes.ExclusiveExclusive);
}
if (attributes.GetStrikethrough())
{
var span = new StrikethroughSpan();
spannableString.SetSpan(span, start, end, SpanTypes.ExclusiveExclusive);
}
if (attributes.GetUnorderedList())
{
var bulletSpan = new BulletSpan();
spannableString.SetSpan(bulletSpan, start, end, SpanTypes.ExclusiveExclusive);
}
}
