How can i hide this group-header-row(red-box in picture). In this example i have one more hiden column, which has more sub-levels(childs). If they are are'nt shown, they stay as empty line, for this reason header has huge height in some tables. Idk how can i solve this problem. I didnt find in ag-grid api functions or somthing can help.
Image with example
I am trying to auto resize my NatTable. I have few things :
1) My NatTable consists of only one column.
2) I am hiding NatTable occasionally.
3) The Part Control surrounding NatTable auto resizes on mouse drag. NatTable should also fit the size.
4) I have custom cell painters for NatTable Cells.
I tried with my bodyDataLayer(Which is based on GlazedListsDataProvider) :
bodyDataLayer.setDefaultRowHeight(35);
bodyDataLayer.setColumnWidthByPosition(0, 100);
bodyDataLayer.setColumnPercentageSizing(true);
But nattable does not show up at all. If I double click the invisible rows, I get required row. But natTable itself does not appear.
NatTable shows up only if
bodyDataLayer.setDefaultColumnWidth(SOME_VALUE);
Only default column width works.
I tried to add a Paint Listener to NatTable to initialize auto resize commands as suggested on Official Documentation. But it has no effect at all.
I tried to add
natTable.setLayerPainter(
new NatGridLayerPainter(natTable, SOME_VALUE));
with auto resizing of columns by position.But it also renders nothing. I am wondering how to resize my NatTable?
Typically DataLayer#setColumnPercentageSizing(true)should be sufficient for percentage sizing.
I can only assume that hiding NatTable occasionally has a negative effect, because that might lead to miscalculation of the percentage values. 100% of 0 is still 0.
Are you calling NatTable#setVisible(false) to hide the NatTable? In that case try to execute the following lines of code
natTable.doCommand(new ClientAreaResizeCommand(natTable));
natTable.redraw();
If that fixes your issue, please open a ticket and report that issue. In that case it seems we need to add a listener for SWT.Show or override setVisible() to execute these lines of code on visibility changes.
I have a DataGrid in an AbsolutePanel.
I set it size via myDataGrid.setSize("100px", "231px");
It is supposed to show 140 data items, but it only shows like 60 or something like that, with automatic vertical scroll bar presented.
But why it shows only part of the data, not full set?
I assume you use a default constructor for the DataGrid. By default the page size is 50, so it will only display 50 records.
Either you use another cosntructor (DataGrid(int pageSize)) or you add a Pager (i.e. SimplePager)
I have a DataGrid with a SimplePager and when theres less than the predefined number of rows per page (in this case 15) the container will show those rows and leave a white space in between the grid and the simplePager (where the other rows would be).
I have seen some mentions on other sites about rendering datagrid first and then fit it into the container, but i have no idea what this means (Or at least, i don't think they're saying its as easy as removing it from the parent and re-attaching it, since i've tried that already).
Thanks in advance.
My proposition - resize container after data fetch, after rendering of grid. It will be just something like this:
container.setHeight(grid.getOffsetHeight() + "px");
I am using GWT 2.4's new DataGrid in a project. I configured the DataGrid with a pagesize of 50.
The available screen is not big enough to display all items and thus a vertical scrollbar is shown (this is actually the main purpose for using a DataGrid in the first place).
I attached a SingleSelectionModel to the DataGrid in order to be able to select items.
This works fine so far.
However I also have another widget with which the user can interact. Based on that user action a item from the DataGrid should be selected.
Sometimes the selected item is not in the visible screen region and the user has to scroll down in the DataGrid to see it.
Is there any way to automatically or manually scroll down, so that the selected item is visible?
I checked the JavaDocs of the DataGrid and found no appropriate method or function for doing that.
Don't know if this works, but you could try to get the row element for the selection and use the scrollIntoView Method.
Example Code:
dataGrid.getRowElement(INDEX_OF_SELECTED_ITEM).scrollIntoView();
The answer above works pretty well, though if the grid is wider than your window and has a horizontal scroll bar, it also scrolls all the way to the right which is pretty annoying. I was able to get it to scroll down and stay scrolled left by getting the first cell in the selected row and then having it scroll that into view.
dataGrid.getRowElement(dataGrid.getVisibleItems().indexOf(object)).getCells().getItem(0).scrollIntoView();
Don't have time to try it out, but DataGrid implements the interface HasRows, and HasRows has, among other things, a method called setVisibleRange. You just need to figure out the row number of the item that you want to focus on, and then set the visible range from that number n to n+50. That way the DataGrid will reset to put that item at the top (or near the top if it is in the last 50 elements of the list backing the DataGrid). Don't forget to redraw your DataGrid.
Have you already looked at this? If so, I'd be surprised that it didn't work.
Oh, and since this is one widget talking to another, you probably have some messaging set up and some message handlers so that when the user interacts with that second widget and "selects" the item, the message fires on the EventBus and a handler for that message fixes up the DataGrid along the lines I've described. I think you'll have to do this wiring yourself.
My solution, a little better:
dataGrid.getRow(model).scrollIntoView();
I got a Out of bounds exception doing the above.
I solved it getting the ScrollPanel in the DataGrid and used .scrollToTop() and so on on the ScrollPanel. However, to access the ScrollPanel in the DataGrid I had to use this comment:
http://code.google.com/p/google-web-toolkit/issues/detail?id=6865
As Kem pointed out, it's annoying the "scrollToRight" effect after the scrollIntoView. After me, Kem's solution gives a better behaviour than the base one as usually the first columns in a table are the more meaningful.
I improved a bit his approach, which scrolls horizontally to the first column of the row we want to be visible, by calculating the first visible column on the left before applying the scroll and then scrolling to it.
A final note: Columns absolute left is tested against "51". This is a value I found "experimentally" by looking the JS values in the browser's developer tool, I think it depends on the table's style, you may need to change/calculate it.
Below the code:
public void scrollIntoView(T next) {
int index = datagrid.getVisibleItems().indexOf(next);
NodeList<TableCellElement> cells = datagrid.getRowElement(index).getCells();
int firstVisibleIndex = -1;
for(int i=0; i<cells.getLength() && firstVisibleIndex<0;i++)
if(UIObject.isVisible(cells.getItem(i)) && (cells.getItem(i).getAbsoluteLeft() > 51) && (cells.getItem(i).getAbsoluteTop() > 0))
firstVisibleIndex = i;
cells.getItem(firstVisibleIndex>=0? firstVisibleIndex : 0).scrollIntoView();
}