Ability to highlight selected table row

Knut Erik Ballestad added a comment - 19/Nov/04 7:07 PM I would say this issue and    DISPL-132 Row/Col styles should be controllable by decorators    DISPL-65 Customize TR CSS class are really the same issue. If decorator support for changing the style of a <TR> tag is added, all these 3 issues are really solved. I personally just patched up the displaytag code so that the tag lib does what I need in my special case, but a more generic solution would be nice. (See attached screenshot that shows what I need to accomplish: highlighting of row 2 in the top table - the 'selected' row).

fabrizio giustina added a comment - 20/Nov/04 7:57 AM comment from DISPL-65 I have found an occasion when it would be helpful to be able to specific my own CSS class for a row. What I would like to see is an additional method in TableDecorator: public String getCSSClass(); If it returns null, the table tag should use the odd/even class as appropriate. If it returns non-null, the table tag should use the specified value. The condition under which this applies is that I would like to have a different style for the row representing the current data being displayed. Kevin Dean kdean@datadevelopment.com === comment from DISPL-132 The power of the decorator (as well as that of the displaytag library) would be greatly enhanced if it would be possible to control which style to use for TR and TD styles. My idea is that instead of automatically generating <tr class="odd"> that a decorator method such as public String getStyle(String curstyle) which in the basic implementation would simply return curstyle - overriders can examine which is the current style (e.g., even or odd) and react on it My requirement is to be able to set the background color of a row baased on attributes of the current row

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Steve McLeod added a comment - 28/Jun/05 3:00 AM 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 &lt;tr> tag.      * @return String &lt;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.

fabrizio giustina added a comment - 28/Jun/05 3:26 AM Thanks for the patch, I will try to commitit asap

Emilio Dolce added a comment - 15/Dec/05 3:25 PM I think that the solution provided with DISPL-267 is more flexible because let you decorate more that a simple css (onclick, onmouseover, etc...).

fabrizio giustina added a comment - 29/Dec/05 11:38 AM In cvs. You can use the addRowClass() and addRowId() callbacks in TableDecorator to specificy a different class or id for each row. Check the sample application for an example on how to do this easily.

selvi added a comment - 29/Oct/09 6:16 AM can anyone send the correct code to implement the row highlight in displaytag table

Matt Raible added a comment - 30/Oct/09 5:29 PM I use JavaScript to implement highlight rows: http://raibledesigns.com/rd/entry/displaytag_changing_a_row_s