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-rw-r--r--doc/manual.tex8
-rw-r--r--lib/ur/basis.urs2
-rw-r--r--src/monoize.sml10
-rw-r--r--tests/ahead.ur8
4 files changed, 22 insertions, 6 deletions
diff --git a/doc/manual.tex b/doc/manual.tex
index ac12c3b7..db1bfe1c 100644
--- a/doc/manual.tex
+++ b/doc/manual.tex
@@ -2103,6 +2103,14 @@ $$\begin{array}{l}
\mt{val} \; \mt{stopPropagation} : \mt{transaction} \; \mt{unit}
\end{array}$$
+Finally, here is an HTML tag to leave a marker in the \cd{<head>} of a document asking for some side-effecting code to be run. This pattern is \emph{much} less common in Ur/Web applications than in normal HTML/JavaScript applications; see Section \ref{signals} for the more idiomatic, functional way of manipulating the visible page.
+
+$$\begin{array}{l}
+ \mt{val} \; \mt{script} : \mt{unit} \to \mt{tag} \; [\mt{Code} = \mt{transaction} \; \mt{unit}] \; \mt{head} \; [] \; [] \; []
+\end{array}$$
+
+Note that the Ur/Web version of \cd{<script>} is used like \cd{<script code=\{...\}/>}, rather than \cd{<script>...</script>}.
+
\subsubsection{Node IDs}
There is an abstract type of node IDs that may be assigned to \cd{id} attributes of most HTML tags.
diff --git a/lib/ur/basis.urs b/lib/ur/basis.urs
index 66e65804..73cef3d2 100644
--- a/lib/ur/basis.urs
+++ b/lib/ur/basis.urs
@@ -782,7 +782,7 @@ val dyn : ctx ::: {Unit} -> use ::: {Type} -> bind ::: {Type} -> [ctx ~ [Dyn]] =
val active : unit
-> tag [Code = transaction xbody] body [] [] []
-val activeHead : unit
+val script : unit
-> tag [Code = transaction unit] head [] [] []
val head : unit -> tag [] html head [] []
diff --git a/src/monoize.sml b/src/monoize.sml
index d382194f..291c0fa3 100644
--- a/src/monoize.sml
+++ b/src/monoize.sml
@@ -3264,7 +3264,7 @@ fun monoExp (env, st, fm) (all as (e, loc)) =
val (style, fm) = monoExp (env, st, fm) style
val (dynStyle, fm) = monoExp (env, st, fm) dynStyle
- val dynamics = ["dyn", "ctextbox", "ccheckbox", "cselect", "coption", "ctextarea", "active", "activeHead"]
+ val dynamics = ["dyn", "ctextbox", "ccheckbox", "cselect", "coption", "ctextarea", "active", "script"]
fun isSome (e, _) =
case e of
@@ -3600,15 +3600,15 @@ fun monoExp (env, st, fm) (all as (e, loc)) =
fm)
| _ => raise Fail "Monoize: Bad <active> attributes")
- | "activeHead" =>
+ | "script" =>
(case attrs of
[("Code", e, _)] =>
((L'.EStrcat
- ((L'.EPrim (Prim.String ("<script type=\"text/javascript\">execD(")), loc),
+ ((L'.EPrim (Prim.String ("<script type=\"text/javascript\">execF(execD(")), loc),
(L'.EStrcat ((L'.EJavaScript (L'.Script, e), loc),
- (L'.EPrim (Prim.String (")</script>")), loc)), loc)), loc),
+ (L'.EPrim (Prim.String ("))</script>")), loc)), loc)), loc),
fm)
- | _ => raise Fail "Monoize: Bad <activeHead> attributes")
+ | _ => raise Fail "Monoize: Bad <script> attributes")
| "submit" => normal ("input type=\"submit\"", NONE)
| "image" => normal ("input type=\"image\"", NONE)
diff --git a/tests/ahead.ur b/tests/ahead.ur
new file mode 100644
index 00000000..29938d07
--- /dev/null
+++ b/tests/ahead.ur
@@ -0,0 +1,8 @@
+fun main () : transaction page = return <xml>
+ <head>
+ <script code={alert "Hi!"}/>
+ </head>
+ <body>
+ <active code={alert "Bye!"; return <xml/>}/>
+ </body>
+</xml>