I'm new to the usage of the RadSplitButton on Winforms.
I've defined two RadMenuItem and set the DefaultItem to the first item of mine collection but it still shows empty as you can see
Is there a way that I can set the first item
RadSplitButton offers a Text property to set its button content:
RadSplitButton splitButton = new RadSplitButton();
splitButton.Text = "Fruits";
For more information please check the documentation: Getting Started.
Are looking for is content? Like set RadSplitButton.content = "some content"?
Related
In my form I have a Barmanager, in which I have a comboboxedit1. I want to know how to access to the selected item of the baredititem1 (combobox). In the normal combobox it is:
dim q =combobox1.selecteditem
but I can't do the same in a baredititem1 wgich is placed in a barmanager.
You can grab the current selected value using the barEditItem1.EditValue property, or while the editor is activated, you can access the current editor instance by BarManager.ActiveEditor property, which you should cast to ComboBoxEdit in your case. You can read about this more in the documentation, where they explain why you cannot access the concrete editor anytime you want.
I am trying to set a ComboBox's text conditionally - that is, if the text I am setting it to exists in the box's Items, then set it to that. Otherwise, leave it blank.
e.x.
ComboBox's Items:
Green
Blue
Pink
Red
For ComboBox1 I am trying to set to "Red". Because that string exists in the Items, the text property is set to "Red". For ComboBox2 I am trying to set to "Yellow", which doesn't exist, so I want that text empty (but the previous items still are there).
All the comboboxes will have the same Items. However, there are lots of combo's so I'm trying to avoid looping through each boxes owns items and compare each one. In C# you could just do something like:
ComboBox1.ItemIndex := 'My Text';
Which doesn't compile here.
You could use either
ComboBox1.ItemIndex := ComboBox1.Items.IndexOf('My Text');
or
ComboBox1.Text := 'My Text';
The second version requires that you have ComboBox's Style set to csDropDownList (otherwise the string would be shown in the combobox even if it is not in the list).
I have a Source ComboBox to populate source fields (25-30 items) shown below in first page
"A"
"B"
...
"Z"
I have selected last item from ComboBox as shown below
"Z"
and when traversing to the next page after saving, i need to make the source combo selection blank, so i have return the below code to reset the Source combobox to point to first item (to reset the display to start from top of dropdown list for user selection)
// my first value in source List is empty space - “”
sourceComboBox.setValue("");
even if you use below code snippets like
sourceComboBox.getSelectionModel().selectFirst();
sourceComboBox.getItems().clear();
sourceComboBox.getSelectionModel().clearAndSelect(0);
but when i click open the combobox dropdown it still shows dropdown display from bottom as shown below
...
"X"
"Y"
"Z"
I am unable to post images for representing combobox values, so has put in above examples.
This looks like a graphics bug to me or am I doing something wrong?
I have seen similar issue reported in below question but no work around suggested so far
Combobox clearing value issue
If you want to simply "reset" the combo box, I think all you have to do is set the value to null, like so:
sourceComboBox.setValue(null);
I ran into nearly the exact same situation and came across your question while looking for a solution. Fortunately, I came up with a workaround that forces the ComboBoxes to reset. When you reset the data on your pane, instead of doing something like:
sourceComboBox.getSelectionModel().clearSelection();
sourceComboBox.getItems.clear();
do something like this...
parentNode.getChildren().remove(sourceComboBox);
sourceComboBox= new ComboBox(); // do whatever else you need to format your ComboBox
parentNode.add(sourceComboBox);
You'll also need to do a setItems() again on your ComboBox so the new one will be populated. This is not an ideal solution but it seems to be working as I expect the provided clearSelection() method would.
Below is the code you're looking for. It will reset it to whatever index you give in within the parenthesis.
sourceComboBox.setSelectedIndex(0);
Goodluck
Most of the things were giving me an error when I tried them. What worked best for me was to use this
comboBox.getSelectionModel.clearSelection();
This will essentially set the value of your ComboBox to null. Because of this, if you are referring to the value of the ComboBox in another place, it becomes important to check for whether the value of the ComboBox is null using this
if(comboBox.getValue() != null)
//Code segment here
The ComboBox control has not a method like scrollTo(index) of the ListView. So it seems hard to workaround that behavior. You can issue a feature request at JavaFX Jira.
I've stumbled on an issue with Comboboxes in javafx2.2. This is the scenario:
Users click on the 'editFile' button.
Another pane becomes visible (with the setVisible method).
This pane contains 6 comboboxes.
Three of them have fixed items: cboReport, cboSales, cboSend. Three of them get their data from a db (ObservableList) and get populated when the pane becomes visible: cboFile, cboCustomer, cboVet
The user selects a file number from the cboFile. The rest of the comboboxes are beeing set with the correct values.
The user presses the save button, the file gets saved as intended.
Next the user presses a close button.
When the window closes, the data on the pane gets resetted through a resetGUI_editFilePane() method. There is have lines like:
...
cboReport.getSelectionModel().clearSelection();
cboSales.getSelectionModel().clearSelection();
cboSend.getSelectionModel().clearSelection();
cboFile.getSelectionModel().clearSelection();
cboCustomer.getSelectionModel().clearSelection();
cboVet.getSelectionModel().clearSelection();
cboFile.getItems().clear();
cboCustomer.getItems().clear();
cboVet.getItems.clear();
...
When the user opens the pane again by pressing the 'editFile' button I notice that only the 'fixed item' comboboxes have cleared their selection, the dynamicly filled comboboxes show the last selected item although the value from the selection itself is null. This looks like a graphics bug to me or am I doing something wrong?
Is there any way around this issue or what is the best method to reset a combobox?
EDIT 2014/08/27:
This is officially not a bug(clearSelection() does not clear value):
https://bugs.openjdk.java.net/browse/JDK-8097244
The official "workaround" is to clear the value of the ComboBox after clearing selection.
cb.getSelectionModel().clearSelection();
// Clear value of ComboBox because clearSelection() does not do it
cb.setValue(null);
It is very simple. You just need to work with the value property of ComboBox. here you go ....
ComboBox c;
c.valueProperty().set(null);
I hope this works for you :-D
I ran into nearly the exact same situation and came across your question while looking for a solution. Fortunately, I came up with a workaround that forces the ComboBoxes to reset. When you reset the data on your pane, instead of doing something like:
cboVet.getSelectionModel().clearSelection();
cboVet.getItems.clear();
do something like this...
parentNode.getChildren().remove(cboVet);
cboVet = new ComboBox(); // do whatever else you need to format your ComboBox
parentNode.add(cboVet);
You'll also need to do a setItems() again on your ComboBox so the new one will be populated. This is not an ideal solution but it seems to be working as I expect the provided clearSelection() method would.
You can retrieve the items and have them all removed:
cboVet.getItems().removeAll(cboVet.getItems());
I've just tested a working solution with the Java JDK 1.7.11:
combobox.setSelectedItem(null);
combobox.setValue(null);
Hope it helps :)
I use reflection with direct manipulation of buttonCell field in ComboBox skin:
#SuppressWarnings({ "rawtypes", "unchecked" })
public static <T> void resetComboBox(ComboBox<T> combo) {
Skin<?> skin = combo.getSkin();
if(skin==null){
return;
}
combo.setValue(null);
Field buttonCellField;
try {
buttonCellField = skin.getClass().getDeclaredField("buttonCell");
buttonCellField.setAccessible(true);
ListCell buttonCell = (ListCell) buttonCellField.get(skin);
if(buttonCell!=null){
StringProperty text = buttonCell.textProperty();
text.set("");
buttonCell.setItem(null);
}
} catch (NoSuchFieldException
| SecurityException
| IllegalArgumentException
| IllegalAccessException e) {
e.printStackTrace();
}
}
I think it's also possible by providing your own buttonCell implementation through buttonCellFactory property
I had the same problem with a ComboBox. The buttonCell of the ComboBox is not updated correctly when I change the items of the ComboBox. This looks like a graphics bug.
I use direct manipulation of buttonCell field in ComboBox.
combo.getButtonCell().setText("");
combo.getButtonCell().setItem(null);
This is the best solution I've found without recreate the ComboBox.
To clear SelectionModel I found nothing better than creating a new instance of Combobox (previous answers update):
myParentNode.getChildren().remove(myCombobox);
myCombobox = new ComboBox();
myParentNode.add(myCombobox);
But this solution evolves other problems: if you use fxml, this combobox will be placed in the wrong place and with wrong parameters. Some fxml parameters are hardly reproduced directly from your controller class code and this is awful to do it every time you need to clear the combobox.
The solution is using custom components instead of creating instances directly in main controller class code, even if these components are standard. This also helps to free some lines in your main controller class by moving component related event methods and other methods to a separate class file, where you use a reference to your main controller class.
How to create custom components in JavaFX FXML Application can be found in http://docs.oracle.com/javafx/2/fxml_get_started/custom_control.htm , but note that CustomControlExample class is not needed for every custom component in your application, if it already has an entry point class with start(Satge stage) method.
How to resolve possible errors with reference from custom component controller class to main controller class can be found in JavaFx: how to reference main Controller class instance from CustomComponentController class?
I need to clear selection of the combo box. And this code worked for me:
List<Object> list = new ArrayList<>(comboBox.getItems());
comboBox.getItems().removeAll(list);
comboBox.getItems().addAll(list);
This should be easy but Windows.Forms surprises me again:
var comboBox2 = new ComboBox();
comboBox2.Items.Insert(0,"Hoi");
comboBox2.Items.Insert(1,"Hoi");
comboBox2.Items.Insert(2,"Hoi");
comboBox2.SelectedIndex = 1;//I want to select the SECOND item
If I openup the combobox (by clicking on it with the mouse) the FIRST item is selected. This does not occur when the items have different texts. How can I select the second item on this combobox?
Use something like this,
comboBox2.Items.Insert(0,"Hoi");
comboBox2.Items.Insert(1,"Hui");
comboBox2.Items.Insert(2,"Hai");
and after this try giving
comboBox2.SelectedIndex = 1;
and also if you want select an item, always the index will starts from 0.
If you have a proper datasource set the following properties:
1. DataSource2. DisplayMember and 3. ValueMember
If you dont have the data source, try setting the following properties:
1. SelectedIndex and
2. Text