Textarea ignores first line in case of blank line
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Key: WICKET-2812
URL: https://issues.apache.org/jira/browse/WICKET-2812
Project: Wicket
Issue Type: Bug
Components: wicket
Affects Versions: 1.4.5
Environment: IE6 / FF3.6 / Opera9
Reporter: Rutger Jansen
When the content of a textarea starts with an empty line, this line disappears
when it is placed in the html.
This is a known problem with the html textarea element.
<textarea>test</textarea> will result in the same as:
<textarea>
test</textarea>
Meaning that the first newline in the textarea is ignored. In case of opening a
page with a textarea with a leading blank line, this line will be removed when
the form is submitted again.
See for similar issues in the apache jira STR-1366 and BEEHIVE-1005
A possible solution is to change the following method in
org.apache.wicket.markup.html.form.TextArea in something like:
protected final void onComponentTagBody(final MarkupStream markupStream,
final ComponentTag openTag) {
checkComponentTag(openTag, "textarea");
String value = getValue();
if (value != null && value.startsWith("\n")) {
value = "\n" + value;
} else if (value != null && value.startsWith("\r\n")) {
value = "\r\n" + value;
} else if (value != null && value.startsWith("\r")) {
value = "\r" + value;
}
replaceComponentTagBody(markupStream, openTag, value);
}
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