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Adding a markup filter

In some very rare cases it might be necessary to add an additional markup filter to the default list. Lets say you want to log a warning or throw an exception in case of an empty src attribute like <img src="">. The Image component is not able to handle it because the wicket id is missing. A markup filter in contrast iterates over all xml tags and is able to detect the problem and to throw an exception.

Note: a markup filter is not able to detect an AttributeModifier changing the src attribute to an empty string.

Wicket 1.4:

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It's maybe a good idea to allow your MarkupParserFactory accept a list of filters which might get appended on creation of the parser in 'newMarkupParser'.

Wicket 1.2:

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Wicket 1.1

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