Hello,
we have similar problems with CellTable and DataGrid. I can´t find a solution
getting the loading indicator to work!
Is there anybody who could provide somthing like "How to use loading indicator"?
Thanks...
Am Montag, 5. März 2012 17:23:34 UTC+1 schrieb Magallo:
>
>
>
> On Friday, March 2, 2012 10:10:13 AM UTC+1, Magallo wrote:
>>
>> I have a very similar problem. I have a DataGrid and when I load data
>> from an RPC I want to show the loading indicator on the grid and when the
>> data are loaded I wanted to show them. I initialize the datagrid with;
>>
>> myDataGrid.setLoadingIndicator(new Image(/*my ImageResource object*/);
>>
>> then during the program flow, just before making an async RPC, I would like
>> to set the DataGrid in the state of 'Loading'
>> so that the loading indicator is shown. Then, after the RPC returns I would
>> like to set the DataGrid in the state of 'Loaded'
>> to show the data rows. I tried with this:
>>
>> ....
>> myDataGrid.fireEvent(new LoadingStateChangeEvent(LoadingState.LOADING));
>> ....
>> myDataGrid.fireEvent(new LoadingStateChangeEvent(LoadingState.LOADED));
>> but nothing happens.
>>
>> I have also tried to call setVisibleRangeAndClearData but it doesn't work.
>>
>> I read from Thomas Broyer that "the loading indicator is shown only when
>> the LoadingState is LOADING, and that one is set by the internal
>> HasDataPresenter only when the known rowData is empty (and the rowCount is
>> not 0)." What exactly does it mean? What is the 'known' rowData? I use a
>> ListDataProvider to bind data to the DataGrid. Where am I wrong? What is
>> the right way to set the 'Loading' state of the DataGrid?
>>
>> jgm: does you code did the trick? I think anyway it's just a little too
>> tricky. I think that considering how the DataGrid (and CellTable also) is
>> designed, I really think and hope there is a simple way. The support for
>> this is not really good. I think google should explain better how to use
>> these controls.
>>
>> Cheers.
>>
>> On Wednesday, February 1, 2012 3:26:10 PM UTC+1, jgm wrote:
>>>
>>> Hi,
>>>
>>> Thanks for your quick answer.
>>>
>>> We also in the meantime found out that ..
>>>
>>> private void clearTable() {
>>> if (dataProvider.getDataDisplays() != null &&
>>> dataProvider.getDataDisplays().isEmpty() == false) {
>>> dataProvider.removeDataDisplay(cellTable);
>>> }
>>>
>>> clearTableColumns();
>>>
>>> cellTable.setVisibleRangeAndClearData(cellTable.getVisibleRange(),
>>>
>>> true);
>>> cellTable.setLoadingIndicator(imageProcessing);
>>> }
>>>
>>> did the trick !
>>>
>>> On 1 Feb., 14:44, Thomas Broyer <[email protected]> wrote:
>>> > AFAICT, CellTable shows the loading indicator only when the
>>> LoadingState is
>>> > LOADING, and that one is set by the internal HasDataPresenter only
>>> when the
>>> > known rowData is empty (and the rowCount is not 0). So I think you
>>> need to
>>> > call setVisibleRangeAndClearData().
>>
>>
>> On Wednesday, February 1, 2012 3:26:10 PM UTC+1, jgm wrote:
>>>
>>> Hi,
>>>
>>> Thanks for your quick answer.
>>>
>>> We also in the meantime found out that ..
>>>
>>> private void clearTable() {
>>> if (dataProvider.getDataDisplays() != null &&
>>> dataProvider.getDataDisplays().isEmpty() == false) {
>>> dataProvider.removeDataDisplay(cellTable);
>>> }
>>>
>>> clearTableColumns();
>>>
>>> cellTable.setVisibleRangeAndClearData(cellTable.getVisibleRange(),
>>>
>>> true);
>>> cellTable.setLoadingIndicator(imageProcessing);
>>> }
>>>
>>> did the trick !
>>>
>>> On 1 Feb., 14:44, Thomas Broyer <[email protected]> wrote:
>>> > AFAICT, CellTable shows the loading indicator only when the
>>> LoadingState is
>>> > LOADING, and that one is set by the internal HasDataPresenter only
>>> when the
>>> > known rowData is empty (and the rowCount is not 0). So I think you
>>> need to
>>> > call setVisibleRangeAndClearData().
>>
>>
>> On Wednesday, February 1, 2012 3:26:10 PM UTC+1, jgm wrote:
>>>
>>> Hi,
>>>
>>> Thanks for your quick answer.
>>>
>>> We also in the meantime found out that ..
>>>
>>> private void clearTable() {
>>> if (dataProvider.getDataDisplays() != null &&
>>> dataProvider.getDataDisplays().isEmpty() == false) {
>>> dataProvider.removeDataDisplay(cellTable);
>>> }
>>>
>>> clearTableColumns();
>>>
>>> cellTable.setVisibleRangeAndClearData(cellTable.getVisibleRange(),
>>>
>>> true);
>>> cellTable.setLoadingIndicator(imageProcessing);
>>> }
>>>
>>> did the trick !
>>>
>>> On 1 Feb., 14:44, Thomas Broyer <[email protected]> wrote:
>>> > AFAICT, CellTable shows the loading indicator only when the
>>> LoadingState is
>>> > LOADING, and that one is set by the internal HasDataPresenter only
>>> when the
>>> > known rowData is empty (and the rowCount is not 0). So I think you
>>> need to
>>> > call setVisibleRangeAndClearData().
>>
>>
>> On Wednesday, February 1, 2012 3:26:10 PM UTC+1, jgm wrote:
>>>
>>> Hi,
>>>
>>> Thanks for your quick answer.
>>>
>>> We also in the meantime found out that ..
>>>
>>> private void clearTable() {
>>> if (dataProvider.getDataDisplays() != null &&
>>> dataProvider.getDataDisplays().isEmpty() == false) {
>>> dataProvider.removeDataDisplay(cellTable);
>>> }
>>>
>>> clearTableColumns();
>>>
>>> cellTable.setVisibleRangeAndClearData(cellTable.getVisibleRange(),
>>>
>>> true);
>>> cellTable.setLoadingIndicator(imageProcessing);
>>> }
>>>
>>> did the trick !
>>>
>>> On 1 Feb., 14:44, Thomas Broyer <[email protected]> wrote:
>>> > AFAICT, CellTable shows the loading indicator only when the
>>> LoadingState is
>>> > LOADING, and that one is set by the internal HasDataPresenter only
>>> when the
>>> > known rowData is empty (and the rowCount is not 0). So I think you
>>> need to
>>> > call setVisibleRangeAndClearData().
>>
>>
--
You received this message because you are subscribed to the Google Groups
"Google Web Toolkit" group.
To view this discussion on the web visit
https://groups.google.com/d/msg/google-web-toolkit/-/npjze-yiR54J.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/google-web-toolkit?hl=en.
