[ https://issues.apache.org/jira/browse/WICKET-1069?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Matej Knopp updated WICKET-1069: -------------------------------- Fix Version/s: (was: 1.3.0-beta5) 1.4.0-alpha Postponing as this should not delay the 1.3 release > RFE: DataTable && colgroup > -------------------------- > > Key: WICKET-1069 > URL: https://issues.apache.org/jira/browse/WICKET-1069 > Project: Wicket > Issue Type: Improvement > Components: wicket-extensions > Environment: any > Reporter: Jan Kriesten > Assignee: Matej Knopp > Fix For: 1.4.0-alpha > > > Hi! > I want to suggest an enhancement for the DataTable extension. > Right now it's only possible to style columns (width, alignment, color etc.) > via stylesheets. This has some not so nice implications IMHO: > - You have to extend the IStyledColumn to return the proper CSS class. > - You have to add a bunch of CSS classes to get the proper styles. > - You have redundancy in HTML output - which isn't necessary. > This is actually what <colgroup><col></colgroup> is meant to solve. > My suggestion: > Adding a 'addColGroup( ColGroup cg )'-feature, which actually lets you add x > ColGroups with n Cols on which you can use AttributeModifiers to have your > styles/classes/width-Attributes added. > A quick implementation would be this: > ---[ColGroup.java]-- > import java.util.List; > import org.apache.wicket.behavior.IBehavior; > import > org.apache.wicket.extensions.markup.html.repeater.data.table.AbstractToolbar; > import org.apache.wicket.extensions.markup.html.repeater.data.table.DataTable; > import org.apache.wicket.markup.html.WebMarkupContainer; > import org.apache.wicket.markup.repeater.RepeatingView; > public class ColGroup > extends AbstractToolbar > { > private static final long serialVersionUID = 1L; > private int numCols; > private Col[] cols; > public ColGroup( DataTable datatable, int numCols ) > { > super( datatable ); > this.numCols = numCols; > } > public void onBeforeRender() > { > if( !hasBeenRendered() ) > { > WebMarkupContainer colgroup = new WebMarkupContainer( "colgroup" ); > for( IBehavior b : (List<IBehavior>) getBehaviors() ) > colgroup.add( b ); > setRenderBodyOnly( true ); > removeAll(); > add( colgroup ); > RepeatingView colgroupCols = new RepeatingView( "elements" ); > colgroup.add( colgroupCols ); > for( Col column : getCols() ) > { > WebMarkupContainer item = new WebMarkupContainer( > colgroupCols.newChildId() ); > colgroupCols.add( item ); > item.add( column ); > } > } > super.onBeforeRender(); > } > public final Col[] getCols( ) > { > if( cols == null ) > { > cols = new Col[numCols]; > for( int i = 0; i < numCols; i++ ) > cols[i] = new Col(); > } > return(cols); > } > public final class Col > extends WebMarkupContainer > { > private static final long serialVersionUID = 1L; > private Col() > { > super( "col" ); > } > } > } > ---[/ColGroup.java]-- > ---[ColGroup.html]-- > <wicket:panel> > <colgroup wicket:id="colgroup"> > <wicket:container wicket:id="elements"><col > wicket:id="col"/></wicket:container> > </colgroup> > </wicket:panel> > ---[/ColGroup.html]-- > Usage: > ColGroup colgroup = new ColGroup( datatable, 4 ); > colgroup.add( new SimpleAttributeModifier( "style", "border: solid 1px > green;" ) ); > Col[] cols = colgroup.getCols(); > cols[0].add( new SimpleAttributeModifier( "width", "10%" ) ); > cols[1].add( new SimpleAttributeModifier( "width", "35%" ) ); > cols[2].add( new SimpleAttributeModifier( "width", "45%" ) ); > cols[3].add( new SimpleAttributeModifier( "width", "10%" ) ); > datatable.addColGroup( colgroup ); > Any thoughts? > Regards, --- Jan. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.