[ http://jira.codehaus.org/browse/DISPL-110?page=comments#action_42122 ]
Steve McLeod commented on DISPL-110:
------------------------------------
I have written a patch to solve this issue. My changes are solid and
well-tested in a demanding environment (major European bank). However I have
neither the time nor inclination to work out how to add my solution to the
build. Contact me directly if you want a patched jar to drop into your code at
steve (dot) mcleod (at) gmail (dot) com. Ahead are my changes. Please add to
the official build if you can - the glory can be all yours.
To patch display tag manually, instructions follow.
In org.displaytag.model.Row replace the getOpenTag() method with this:
/**
* Writes the open <tr> tag.
* @return String <tr> tag with the appropriate css class attribute
*/
public String getOpenTag()
{
// try to get a CSS style from the current tableDecorator. If none
exists
// then use the default odd/even style system.
String css = null;
if (this.tableModel.getTableDecorator() != null)
{
css =
this.tableModel.getTableDecorator().getCssClass(this.rowNumber);
}
if (css == null)
{
css = this.tableModel.getProperties().getCssRow(this.rowNumber);
}
if (StringUtils.isNotBlank(css))
{
return TagConstants.TAG_OPEN + TagConstants.TAGNAME_ROW + " "
//$NON-NLS-1$
+ TagConstants.ATTRIBUTE_CLASS + "=\"" //$NON-NLS-1$
+ css + "\"" //$NON-NLS-1$
+ TagConstants.TAG_CLOSE;
}
return TagConstants.TAG_OPEN + TagConstants.TAGNAME_ROW +
TagConstants.TAG_CLOSE;
}
In org.displaytag.decorator.TableDecorator add the following new method called
getCssClass
/**
* Called to obtain the name of
* the CSS class that should be used in rendering the current table row, for
* situations when the default odd/even row system is not
* suitable.
*
* @return the name of the CSS class to use, or null if the
* default DisplayTag odd/even row CSS classes should be used on
* this row.
*/
public String getCssClass(int rowNumber)
{
return null;
}
Once you have successfully recompiled, you can set classes on an individual row
basis using the table decorator feature:
eg.
<display:table ...lots of attributes here... decorator="MyTableDecorator"/>
In a class called MyTableDecorator, which extends TableDecorator, override the
new getCssClass method.
For example, the following code sets a particular style depending on whether
the row has a non-zero value for problem_id.
public String getCssClass(int rowNumber) {
Row row = (Row) this.getCurrentRowObject();
BigDecimal problemCode = (BigDecimal) row.get("problem_id");
String cssClass = null;
if ((problemCode != null) && (problemCode.intValue() != 0)) {
cssClass = "problematic_";
cssClass += (rowNumber % 2 == 0) ? "odd" : "even";
}
return cssClass;
}
It would be good to follow the approach I have used to add a getCssId(...)
method as well. The approach would be identical.
> Ability to highlight selected table row
> ---------------------------------------
>
> Key: DISPL-110
> URL: http://jira.codehaus.org/browse/DISPL-110
> Project: DisplayTag
> Type: Wish
> Components: Decorators, HTML Generation
> Versions: 1.0 RC1
> Reporter: fabrizio giustina
> Priority: Minor
> Attachments: selected-row-2.jpg, selected-row-2_NEW.jpg
>
>
> ====
> imported from sf tracker
> id 810796
> submitted by Bernard Farrell - bernfarr
> http://sourceforge.net/support/tracker.php?aid=810796
> ====
> It would be good to provide a means to highlight (via
> CSS tags, ideally) the row on the table that has been
> selected.
> Ideally it would be good if the row selection (by clicking
> on a given row) would automatically do this highlighting,
> though I think that might be more interaction than would
> be needed by most table users.
> Also, I could see where developers would like facilities to
> select an entire row, entire column, or a specific cell.
> ===
> Date: 2004-03-26 10:52
> Sender: knuterikb
> Logged In: YES
> user_id=364080
> I suppose this could be implemented in a table decorator by
> comparing the request parameters with the
> paramId/paramProperty pair, and if they match, you could
> change the style for the row in question.
> - Maybe this functionality is also so generic that it should be
> included in the default tag implementation, e.g. with a
> styleClassSelectedRow="myStyleClass" parameter for the tag.
> I would also like access to this kind of functionality, and will
> look into it if I can spare the time...
> ===
> Date: 2004-04-05 21:11
> Sender: knuterikb
> Logged In: YES
> user_id=364080
> I have just finished making this functionality as a patch that
> we use in a project I am working on.
> Ideally this functionality should maybe have a parameter by
> it's own, but because I had little time available I had to
> integrate it in the decorator parameter.
> example:
> <display:table .... decorator="highlightSelectedRow,param" >
> The patch then matched the request parameters (already
> clicked link) with the links that are produced by the cells in
> the table. At the first match, the row in question is
> highlighted. This means that if multiple rows link to the same
> location, and not the first row containing this link is clicked,
> the wrong row is selected. This is not a problem in my
> application, but could be an issue for others...
> ...any way, I could send the patch to anyone interested.
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