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jbe/bsw@0
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1 --[[--
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2 ui.script{
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3 noscript_attr = noscript_attr, -- HTML attributes for noscript tag
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4 noscript = noscript, -- string or function for noscript content
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5 attr = attr, -- extra HTML attributes for script tag
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6 type = type, -- type of script, defaults to "text/javascript"
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7 script = script, -- string or function for script content
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8 }
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9
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10 This function is used to insert a script into the active slot.
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11
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12 WARNING: If the script contains two closing square brackets directly followed by a greater-than sign, it will be rejected to avoid ambiguity related to HTML vs. XML parsing. Additional space characters can be added within the program code to avoid occurrence of the character sequence. The function encode.json{...} encodes all string literals in a way that the sequence is not contained.
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jbe@10
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13
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14 --]]--
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15
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16 function ui.script(args)
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17 local args = args or {}
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18 local noscript_attr = args.noscript_attr
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19 local noscript = args.noscript
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20 local attr = table.new(args.attr)
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21 attr.type = attr.type or args.type or "text/javascript"
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22 local script = args.script
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23 if args.external then
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24 attr.src = encode.url{ external = args.external }
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25 elseif args.static then
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26 attr.src = encode.url{ static = args.static }
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27 end
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28 if noscript then
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29 ui.tag{ tag = "noscript", attr = attr, content = noscript }
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30 end
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jbe/bsw@4
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31 if attr.src then
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32 ui.tag{ tag = "script", attr = attr, content = "" }
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33 elseif script then
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jbe/bsw@11
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34 local script_string
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35 if type(script) == "function" then
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36 script_string = slot.use_temporary(script)
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37 else
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38 script_string = script
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39 end
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40 if string.find(script_string, "]]>") then
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41 error('Script contains character sequence "]]>" and is thus rejected to avoid ambiguity. If this sequence occurs as part of program code, please add additional space characters. If this sequence occurs inside a string literal, please encode one of this characters using the \\uNNNN unicode escape sequence.')
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42 end
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jbe/bsw@9
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43 ui.tag{
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44 tag = "script",
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45 attr = attr,
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46 content = function()
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47 slot.put("/* <![CDATA[ */")
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48 slot.put(script_string)
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49 slot.put("/* ]]> */")
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50 end
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51 }
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52 end
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53 end
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