trying to add some link cell in my GWT cellTable - gwt

Question

I am trying to add a Link in my cell table (I just want the item to be underlined and mouse symbol change on hover)
and on click I just want to give a window Alert .
for that i have tried these Options : ( but no luck )
1)
final Hyperlink hyp = new Hyperlink("test", "test");
Column<EmployerJobs, Hyperlink> test = new Column<EmployerJobs, Hyperlink>(new HyperLinkCell())
{
#Override
public Hyperlink getValue(EmployerJobs object)
{
return hyp;
}
};
Problem with option 1 is , it takes me to navigation page "test", whereas I dont want to go any other page i just want a window alert.
2)
Column<EmployerJobs, SafeHtml> test = new Column<EmployerJobs, SafeHtml>(new SafeHtmlCell())
{
#Override
public SafeHtml getValue(EmployerJobs object)
{
SafeHtmlBuilder sb = new SafeHtmlBuilder();
sb.appendEscaped("test");
return sb.toSafeHtml();
}
};
problem with option 2 is I dont know what exactly to return here and its not getting underlined.
3) at last i am trying to add anchor in my celltable with a compositecell(as ideally i want three different anchors in my ONE cell)
final Anchor anc = new Anchor();
ArrayList list = new ArrayList();
list.add(anc);
CompositeCell ancCell = new CompositeCell(list);
Column testColumn1 = new Column<EmployerJobs, Anchor>(ancCell) {
#Override
public Anchor getValue(EmployerJobs object) {
return anc;
}
};
Option 3 is giving some exception .
If you can help me get working any of the above option, I'll be grateful
Thanks

Answer 1

You are doing it totally wrong. You need to use ActionCell for stuff like this or create your own cell. Example code:
ActionCell.Delegate<String> delegate = new ActionCell.Delegate<String>(){
public void execute(String value) { //this method will be executed as soon as someone clicks the cell
Window.alert(value);
}
};
ActionCell<String> cell = new ActionCell<String>(safeHtmlTitle,delegate){
#Override
public void render(com.google.gwt.cell.client.Cell.Context context, //we need to render link instead of default button
String value, SafeHtmlBuilder sb) {
sb.appendHtmlConstant("<a href='#'>");
sb.appendEscaped(value);
sb.appendHtmlConstant("</a>");
}
};
Column testColumn1 = new Column<EmployerJobs, String>(cell) {
#Override
public String getValue(EmployerJobs object) {
//we have to return a value which will be passed into the actioncell
return object.name;
}
};
I recommend to read official documentation for Cell Widgets, since it is pretty much everything what you need to know about cell widgets.