Mercurial > urweb
diff doc/manual.tex @ 1751:acadf9d1214a
'dynStyle' pseudo-attribute
author | Adam Chlipala <adam@chlipala.net> |
---|---|
date | Sun, 06 May 2012 15:15:46 -0400 |
parents | 277480862cef |
children | 675ce534e3ec |
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--- a/doc/manual.tex Sun May 06 14:01:29 2012 -0400 +++ b/doc/manual.tex Sun May 06 15:15:46 2012 -0400 @@ -1957,6 +1957,7 @@ \hspace{.1in} \Rightarrow \mt{css\_class} \\ \hspace{.1in} \to \mt{option} \; (\mt{signal} \; \mt{css\_class}) \\ \hspace{.1in} \to \mt{css\_style} \\ + \hspace{.1in} \to \mt{option} \; (\mt{signal} \; \mt{css\_style}) \\ \hspace{.1in} \to \$\mt{attrsGiven} \\ \hspace{.1in} \to \mt{tag} \; (\mt{attrsGiven} \rc \mt{attrsAbsent}) \; \mt{ctxOuter} \; \mt{ctxInner} \; \mt{useOuter} \; \mt{bindOuter} \\ \hspace{.1in} \to \mt{xml} \; \mt{ctxInner} \; \mt{useInner} \; \mt{bindInner} \to \mt{xml} \; \mt{ctxOuter} \; (\mt{useOuter} \rc \mt{useInner}) \; (\mt{bindOuter} \rc \mt{bindInner}) @@ -1965,7 +1966,7 @@ Also note that two different arguments are available for setting CSS classes: the first, associated with the \texttt{class} pseudo-attribute syntactic sugar, fixes the class of a tag for the duration of the tag's life; while the second, associated with the \texttt{dynClass} pseudo-attribute, allows the class to vary over the tag's life. See Section \ref{signals} for an introduction to the $\mt{signal}$ type family. -The third value-level argument makes it possible to generate an HTML \cd{style} attribute. +The third and fourth value-level arguments makes it possible to generate HTML \cd{style} attributes, either with fixed content (\cd{style} attribute) or dynamic content (\cd{dynStyle} pseudo-attribute). Two XML fragments may be concatenated. $$\begin{array}{l} @@ -2237,7 +2238,9 @@ &&& \{e\} & \textrm{computed value} \\ \end{array}$$ -Further, there is a special convenience and compatibility form for setting CSS classes of tags. If a \cd{class} attribute has a value that is a string literal, the literal is parsed in the usual HTML way and replaced with calls to appropriate Ur/Web combinators. Any dashes in the text are replaced with underscores to determine Ur identifiers. +Further, there is a special convenience and compatibility form for setting CSS classes of tags. If a \cd{class} attribute has a value that is a string literal, the literal is parsed in the usual HTML way and replaced with calls to appropriate Ur/Web combinators. Any dashes in the text are replaced with underscores to determine Ur identifiers. The same desugaring can be accessed in a normal expression context by calling the pseudo-function \cd{CLASS} on a string literal. + +Similar support is provided for \cd{style} attributes. Normal CSS syntax may be used in string literals that are \cd{style} attribute values, and the desugaring may be accessed elsewhere with the pseudo-function \cd{STYLE}. \section{\label{structure}The Structure of Web Applications}