Hi
all,
I just finished a
patch to displaytag that had two objectives:
- Include
functionality that lets me highlight a row where the user has clicked on a link
in a row.
- Add
displaytag code regarding to usage of stylesheet, so that the <TR>
and <TD> tags output by displaytag includes the
styleclass.
This
makes it possible to change cell attributes like font,text color etc of the text
displayed in each cell according to the styleheet of 'odd', 'even' and
'selectedRow'.
Previously you could not set the style of the text in a cell, which quite
heavily limited the color difference you could use in the 'even' and 'odd' style
classes,
and
even more importantly in the new 'selectedRow' styleclass which is supposed to
stand out from the 'odd' and 'even' styles.
Because of me having
limited time available to complete this, I added the new functionality as a
patch to the 'decorator' tag parameter.
The change is
backwards compatible, so that it doesn't break existing code - and you can still
use this parameter to specify a decorator.
But the tag
parameter now accepts a comma-separated input that lets you specify either one
of these combinations:
-
decorator="org.yourorg.decorator.YourDecorator" if you want to use the param as
before.....
-
decorator="highlightSelectedRow,drilldownByAccountId" if you want to higlight a
row that contains a link that the user clicks
(that
contains the request parameter 'drilldownByAccountId') without using a
decorator.
-
decorator="org.yourorg.decorator.YourDecorator,requestParameterToUseForHighlighting
if you want to use BOTH a decorator and row highlighting.
My implementation
matches the request parameter value, e.g 'drilldownByAccountId=10023' with the
request parameter values found in each column of the table.
If a match is found,
the CSS style class of <TR> and <TD> tags of this row is set to
'selectedRow'
Current
implementation limitations and wanted future
functionality/implementation:
- If more than
one row has a link with the same request paramater + value, only the first
occurence is marked as a 'selectedRow'
- The current
implementation can only handle request parameter matching for one column at the
time,
but it should be fairly easy to expand this - now it meets MY, needs so I
stopped there....
- This
functionality should probably rather have it's own parameter, instead of
patching the decorator="xx" parameter.
Apart from that:
have fun playing with row highlighting ;-)
(patches included:
Row.java, Column.java, TableTag.java)
Knut Erik
Ballestad
Column.patch
Description: Binary data
Row.patch
Description: Binary data
TableTag.patch
Description: Binary data
