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Typical XPath expressions
This is a list of XPath expressions as they are typically used for creating a layout stylesheet for XWeb. All given expressions
assume that the expressions won't produce conflicts with other (non-XWeb) elements, which should be fine with XHTML input.
If you use other XML input you might want to add "/path/to/navigationElement" in front of these expressions, in the XHTML
case it would be e.g. "/html//entry[@active='true']/@name" for the name of the active page instead of just "//entry[@active='true']/@name".
Creating the navigation
- @active = 'true'
- Test if we process an active section or the active entry. There can be multiple active
sections if sections are nested.
- entry[1]
- Returns the first entry when processing a section. Useful if you want to link the section
buttons.
- //section[@active='true']/entry
- Finds all entries of active sections. Usually you will have only one active section with entries.
- position() = 1
- Tests if the current element in the first in a set (avoid using * with this, it will include the
text nodes into the set, inluding whitespace). Useful e.g. to give the first button in a section a different
look.
- position() = last()
- Tests if the current element in the first in a set (avoid using * with this, it will include the
text nodes into the set, inluding whitespace). Useful e.g. to give the first button in a section a different
look.
Finding images
- //section[@active='true']/img[@xwebtype='sectionBanner']
- The banner for the active section (assuming the image style is called "sectionBanner").
- //entry[@active='true']/img[@xwebtype='entryBanner']
- The banner for the active page (assuming the image style is called "entryBanner").
- //img[starts-with(@xwebtype, 'mouseOver')]
- Finds any image for which the type of the image style starts with teh string "mouseOver".
This is useful for preloading images.
- //file[@id='someID']/@src
- Returns the url for the result of a <file> entry with the given ID -- useful to add special
images that are just copied into the output.
Cross-references
- //entry[@id='someID']/@src
- Returns the url for a page created by an <entry> with the given ID.
- //file[@id='someID']/@src
- Returns the url for the result of a <file> entry with the given ID.
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