See https://code.google.com/p/google-web-toolkit/issues/detail?id=7014#c6
You have to use "new CheckboxCell(true, false)".
On Tuesday, November 13, 2012 9:41:02 AM UTC+1, Thomas Frisch wrote:
>
> Hi,
> I have a cell table with a column that contains a checkbox. Now I would
> like to add a 'select all box' that when selected all other checkboxes in
> the cell table are selected. I tried to use a MultiselectionModel for that.
> When I add the select all check box as a footer it does not work at all
> only when I add it as the header widget it 'kinda' works. Here is how I use
> it:
>
> MultiselectionModel<Object> msm = new MultiSelectionModel<Object>();
> table.setSelectionModel(msm, DefaultSelectionEventManager.<Object>
> createCheckboxManager());
>
> Header<Boolean> selectAllHeader = new Header<Boolean>(new CheckboxCell()) {
> @Override
> public Boolean getValue() {
> return msm.getSelectedSet().size() == table.getRowCount();
> }
> };
>
> selectAllHeader.setUpdater(new ValueUpdater<Boolean>() {
> @Override
> public void update(Boolean value) {
> for (Object msg : table.getVisibleItems()) {
> msm.setSelected(msg, value);
> }
> }
> });
>
> Column<Object, Boolean> select = new Column<Object, Boolean>(new
> CheckboxCell()) {
> @Override
> public Boolean getValue(Object object) {
> return msm.isSelected(object);
> }
> };
>
> select.setFieldUpdater(new FieldUpdater<Object, Boolean>() {
> public void update(int index, Object object, Boolean value) {
> msm.setSelected(object, value);
> }
> });
>
> Header<String> colHeader = new Header<String>(new TextCell()) {
> @Override
> public String getValue() {
> return "HEADER";
> }
> };
> //when adding like this does select all does not work
> table.addColumn(select, colHeader, selectAllHeader);
> //when adding the select all check box as header it 'kinda' works
> table.addColumn(select, selectAllHeader);
>
>
> With kinda works I mean the following:
> - Click on Check-all box -> everything is selected but check-all box is
> not selected (NOT OK)
> - Click on check-all box again -> everything still selected and now also
> check-all box selected (OK)
> - Click on check-all box again -> nothing is selected but check-all box is
> still selected (NOT OK)
> - Click on check-all box again -> nothing is selected and now also
> check-all box is not selected (OK)
>
>
> Please can anyone help me??
>
>
>
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