enter image description hereI am new to SWT Jfaces.
I am trying to create tree structure by using TreeViewer.
treeViewer.addSelectionChangedListener(new ISelectionChangedListener() {
public void selectionChanged(final SelectionChangedEvent event)
{
TreeSelection selection = (TreeSelection) event.getSelection();
How to get selected column from TreeSelection.
I need exact column which user selected.
If i used TableViewer getSelectionIndex() was there like that is there anything to get selected column.
Thanks
Tree and Table viewers don't really maintain a 'selected column' so there is no API for this.
If you want to edit column cells look at EditingSupport which does support separate editors for each column.
Related
I am using DOJO datagrid version 1.10 What I want is on tab indexing the row in the grid should get highlighted so that user will be able to know on which row the focus is. But I am not getting the row focus.
You could listen on the dojox.grid.DataGrid::onCellFocus event. The event arguments are the focused cell-Object itself and the corresponding rowIndex.
function onCellFocus(cell, rowIndex) {
// first clear selection
grid.selection.clear();
// select the focused row
grid.selection.setSelected(rowIndex, true);
// invoke manually the render method
grid.render();
}
I've created a working fiddle for you, which can be found here.
Does anyone know how to disable a single row of a JFace TableViwer? I have a TableViwer constructed as follows:
TableViwer tv = new TableViwer(composite, SWT.NONE| SWT.FULL_SELECTION | SWT.BORDER);
tv can have many rows, but I am adding a particular unique row to the table dynamically(when an external button is clicked) and I need to make only that row disabled (grayed out and not selectable. Not selectable can also be achieved through existing handler, if there is no other option).
I searched in google but did not get much information. I am new to SWT/JFace, so any help would be appreciated.
You would have to do something in the selection listener to reject selection of the row.
To make the row gray you can make your Label Provider implement IColorProvider which lets you define the two methods:
public Color getForeground(Object element);
public Color getBackground(Object element);
which can color the row.
You could also use a label provider derived from StyledCellLabelProvider which lets you define more complex coloring.
I am using a Table Viewer with cell editors... one is a ComboxBox and the other one is a textcell editor... At runtime based on the selection in the combo box i want to change the other cell editor to either a texteditor or combobox... How can this be achieved??
When you make selection in one comobox editor, you update the underlying model element with the selection in combobox editor. You get the same element in below method getCellEditor(Object element). Depending on state of the element, you should either return TextCellEditor or ComboBoxCellEditor
org.eclipse.jface.viewers.EditingSupport
org.eclipse.jface.viewers.EditingSupport.getCellEditor(Object element)
you find lot of help online about how to use EditingSupport on TableViewer/TreeViewer
I have a full search panel with listbox whose value are read from DB.when a item in listbox selected and search is made.If the results are not found the search panel is condensed (one more search panel) and in condensed search ,we can change the search criteria ,selected a different item in the list box .after changing the search criteria and if search is made ,when the full search panel appears,the value of the list box in full search panel should be same as the one changed/selected in the condensed search panel.
How can we accomplish this.
In simple - If i have two list boxes, load a list box and set the value of the listbox same the other listbox.If value of one listbox is changed, the other should be changed and the value of this listbox is set with the value selected in the previous one.
I would do the following
//you have something like this
ListBox listbox1;
ListBox listbox2;
//add a change handler
listbox1.addChangeHandler(new ChangeHandler() {
#Override
public void onChange(ChangeEvent event)
{
int index = listbox1.getSelectedIndex();
//do your update code here for listbox2
//like a listbox2.setSelectedIndex(index) or something
}
As far as I see its an easy implementation. Add a value change handler on the first listbox and do whatever you want in onChange method.
Regarding your panel need to be collapsed when there is no search results, you can always use vertical panel and set its height to 100% and add another panel to it or Use Dock Panel and add panels to south or best use disclosure panel and play around with it.
I want to add a special selection model to the celltable. Basically the function i want to have is to select a row on the table which is located on left side, a corresponding form will pop up on the right side.
I know so many people will use the singleSelectionModel with SelectionChangeHandler.
But there is problem with this method.
For example, if I select row 1 on the table. the form pop up. I close the form by clicking the close-button. Later then, I select the row 1 again, the event is not fired, because it is SelectionChangeHandler. I have to select other row before doing this. This is no good.
So I think there are a few ways to do this:
Make the row deselected right after I select the row.
Use click handler to fire the event ( to pop up the form)
Use other selection model with other selection handler to do this. (I have no ideas about this though)
So my questions are,
Does anyone know what kind of other selection handler I can use for this.
If I use the click handler on celltable, will there be any problem?
I just want to learn more about this. So any ideas will be welcome.
Thanks a lot.
Best Regards.
Use NoSelectionModel. It won't update the table view after the row is selected. That is, even if the same row is selected, the change event is fired.
//Here 'Contact' is the datatype of the record
final NoSelectionModel<Contact> selModel = new NoSelectionModel<Contact>();
selModel.addSelectionChangeHandler(new Handler() {
#Override
public void onSelectionChange(SelectionChangeEvent event) {
Contact clickedObject = selModel.getLastSelectedObject();
GWT.log("Selected " + clickedObject.name);
}
});
table.setSelectionModel(selModel);
I have using cell table in my each project. The better way to just deselect row manually as u mention. and make change css such as selected cell table's row look not changed after selection.