Dynamic datatable in custom component

Question

hi all,
i'm working on a custom jsf component and this component will create a datatable dynamically. (you can see component details from http://www.jroller.com/page/hasant?entry=creating_dynamic_datatable_inside_of AND http://www.jroller.com/page/hasant?entry=jsf_question_for_community_what)
the question is; when i want to add a selection column(dynamically), how can i handle its selected values?
i mean, if i have created this datatable in a page with designer, i would bind an Integer[] to that selection column's checkboxes. But i have to add this selection column dynamically from my component. So, how can i GET and SET the selection columns values. Since this is a custom component, there is no backing bean for value binding to this component.
when i resolve the request param string to get the selected rows, it's working(=i can see the selected rows somehow..) but, i can not set that values again while encoding that column after a submit.
here is my row selection column encoding code;
     private void addSelectionColumnToTable(FacesContext context, UIData table) {
          UIColumn column = new UIColumn();
          HtmlInputRowSelect rowSelect = new HtmlInputRowSelect();
          rowSelect.setId("rowSelect1");
          rowSelect.setStyleClass("inputRowSelect");
          rowSelect.setValue(m_selectedRows);
          column.getChildren().add(rowSelect);
          table.getChildren().add(column);
     }In the code above, rowSelect.setValue(m_selectedRows); part not effecting anyhing. m_selectedRows variable includes row numbers(in an Integer array) that i want to see as selected.
any solution/recommendation?

Answer 1

Well if you are still interested in using a text component
instead of a Button the way you would go about this is using
textWidth. Here's how I've done it before using a text / label
whatever you want that shows text.
// => Set our text we got from database
myText.text = "This is the text I got from the DB";
// => Validate it so that way we make sure we get right
numbers
myText.validateNow();
// => Find out how wide our text really is.
var textWidth:Number = myText.textWidth
// => Reset the width of our text component and add 20 for
a little buffer
myText.width = textWidth + 20;
Now my suggestion is if your going to be dynamically creating
these on the fly from a database call you throw it into a method /
class and have that do all the work for you so all you have to do
is pass the text to it and it resizes itself based on the example
above.