The trick is to add an annotated constructor to your class above:
@UiConstructor
public UIGrid(nt rowCount, int columnCount) {
super(rowCount, columnCount);
}
Now your code should work as expected.
You might need to remove your row and column setter methods.
/Marcus
On Feb 14, 3:18 pm, Blessed Geek <[email protected]> wrote:
> The only usable layout for UIBinder is DockLayoutPanel, which is not
> applicable for most layout requirements. Without useable layouts,
> uibinder is a good demo technology but unuseable.
>
> The Grid widget for example.
> No setColumnCount nor setRowCount nor add(widget) methods.
>
> OK, that's simple. I'll just extend Grid and provide my own
> setColumnCount, setRowCount and add(widget). Or so I thought.
>
> static public class UIGrid
> extends Grid
> {
> public void setRowCount(int n){
> this.numRows = n;
> }
> public void setColumnCount(int n){
> this.numColumns = n;
> }
> public void add(Widget w){
> int row = this.count/this.numColumns;
> int col = this.count - row*this.numColumns ;
> this.count++;
> if (this.numRows<row)
> this.setRowCount(row);
> this.setWidget(row, col, w);
> }
>
> public void add(String t){
> int row = this.count/this.numColumns;
> int col = this.count - row*this.numColumns;
> this.count++;
> this.setText(row, col, t);
> }
> protected int count=0;
> }
>
> And my ui.xml:
>
> <z:UIGrid
> columnCount='2' rowCount='3'>
> <g:Label>Name</g:Label>
> <g:TextBox ui:field="name" width="15em"/>
> <g:Label>Password</g:Label>
> <g:TextBox ui:field="password" width="15em"/>
> <g:Button ui:field="logIn" text="login"/>
> </z:UIGrid>
>
> You know what, the uibinder attributes was not read at the start of
> bind but probably after all the members have been added. Which means,
> during add widget, the placement calculation encountered divide by
> zero exception.
>
> So. I had to explicitly set the sizes at the constructor.
> public UIGrid(){
> this.resize(3, 2);
> }
>
> That is poor design strategy on my part.
>
> Hey GWT team, help us out here by enhancing the layout policy
> guys.Otherwise, using the java source code to perform layout defeats
> the purpose of using uibinder!!
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