I have a flex app with several fields and one text field with a focusOut event:
<mx:FormItem label="Last" x="226" y="1">
<s:TextInput id="lastNameClientTextInput" text="#{_currentEditClient.lastName}" change="textFieldChangeCapitalize(event)" focusOut="lastNameClientTextInput_focusOutHandler(event)"/>
</mx:FormItem>
As expected, when I tab or click out of the field after typing a value it executes my "lastNameClientTextInput_focusOutHandler" method which simply pops-up a new window:
protected function lastNameClientTextInput_focusOutHandler(event:FocusEvent):void
{
clientSearchPopUp = new ClientListWindow();
PopUpManager.addPopUp(clientSearchPopUp, this, true);
PopUpManager.centerPopUp(clientSearchPopUp);
}
That window will do a "PopUpManager.removePopUp(this);" when the user clicks the close button.
However, the problem is when the window closes, the focus is back on the lastNameClientTextInput! I am unable to click or tab out of the field!
When I tab out I do initially see the ibeam cursor move from the last name field to the next field in tab order (address) and then my window pops-up. When I close the window it moves BACK to the last name field and highlights the value.
It is as if I need to do something to validate the focusOut event?
You might want to try using valueCommit rather than focusOut. You could also listen for the popup being removed and set focus manually.
HTH;
Amy
Late I know, but Flex may be referring to the FocusManager.lastFocus property to resume focus from the last time the component was active. When triggering the pop up, try calling:
(focusManager as FocusManager).mx_internal::lastFocus = null;
Related
I start with the question and then describe the problem more in detail:
Question:
Is there a way to receive events from the listview of a JavaFx ComboBox directly (ComboBox consists of a listview and a textfield as far as I understand)? I would like to find out which element of the list has been clicked by mouse or which element was selected when the user pressed enter on the keyboard (after navigating with Up/Down Arrows in the list). I therefore need to receive the mouse click event or the keypress event on the listview, but all I can get so far are events on the combobox itself which turned out to be only changes in the textfield of the combobox.
Detailed problem description:
I have a JavaFx Application with a combobox where the idea is that the value is directly added to another list when the user clicks on an entry in the combobox list (when the popup of the combobox is open). Additionally, when the user navigates in the combobox list with the arrow keys on the keyboard and he presses enter, the currently selected value should be taken and added to the other list. However so far I have not found out how I can implement this feature with the standard JavaFx combobox.
Tried:
The first solution I tried was to add a change listener on the combobox's valueProperty (this is the value that is displayed in the textfield when the popup is closed). So when the user clicks on a listentry, the popup closes and the clicked entry is put into the value field, changes the value and therefore fires my change listener. This worked well with the mouse, but keyboard navigation did not work correctly because everytime the user navigates down or up on the list, the value field of the combobox is updated with the currently selected listentry and therefore fires my changelistener every time (which in turn adds the value to my other list, while it should only be added on enter keypress).
The next solution was to not add a listener to the valueProperty, but to the showingProperty. Everytime the combobox popup closes, the current value of the value field is taken and added to the other list. This works again well with the mouse, but still has issues with keyboard navigation. While it now correctly handles up/down navigation in the list and enter keypresses, the problem is now when you try to cancel the selection. When you press escape, the value is taken as well and added to the other list like you would have pressed enter. The problem with this approach is that I cannot find out with which keypress the popup has been closed.
So the next idea I had is to add an event filter to the combobox itself with the addEventFilter Method of the ComboBox with code similar to the following (also proposed here StackOverflow):
ComboBox comboBox = new ComboBox();
comboBox.addEventFilter(KeyEvent.KEY_PRESSED, (event) -> {
// do stuff
});
But the event filter never gets called when the combobox popup is open. It is only called when the popup is closed, which leads me to the assumption that the event is consumed by the listview. So the only solution to the problem seems to be to somehow capture the events from the listview itself. And that leads back to the question at the beginning of this post. Sorry for the long explanation.:-)
Came across this question while looking for something else. It touches on something I've worked on before so assuming I understand what you're trying to accomplish and also that this is still relevant here are a couple of ideas.
To keep the other list (list #2) in sync with the combo box for mouse clicks try:
A ChangeListener on the selectedItem property for the combo box's selectionModel. Clicking an item in the popup (drop-down) list view will change the selectedItem value and close the Window that 'owns' the list view, or
An event handler to the combo box for the event type ComboBoxBase.ON_HIDDEN which gets fired when the list view closes (or better said 'becomes hidden').
The ChangeListener may be problematic inasmuch as the selection models for the combo box and the list view are linked at a low level, so that changes to the selectedItem value for the list view which will be triggered when navigating with key strokes will necessarily be handled by the ChangeListener. Since you want to sync the combo box and list #2 only when the ENTER key is pressed, this will probably not work. But that still leaves the event handler idea to try.
As for ENTER key press, you need to get a handle for the list view itself, and then add whatever behavior (listeners/event handlers) as needed. You do this by getting the skin for the combo box, which should be an instance of ComboBoxListViewSkin, and then get the list view by invoking the getPopupContent() method for the skin; it returns the popup list view as a Node so you'll to recast the returned value but no big deal.
Hope this helps.
The idea of the below code is that ListView is created once the combobox is loaded in the JavaFX scene. Therefore, we add a listener on the combobox to check when it appears on the scene, and then through "lookup" method we get its listview and add a listener to it.
In the example, I have set a MouseEvent listener but you can easily adjust it for keys as well.
private EventHandler<MouseEvent> cboxMouseEventHandler;
private void initComboBox() {
ComboBox<String> comboBox = new ComboBox<String>();
comboBox.getItems().add("Item 1");
comboBox.getItems().add("Item 2");
comboBox.getItems().add("Item 3");
comboBox.sceneProperty().addListener((a,oldScene,newScene) -> {
if(newScene == null || cboxMouseEventHandler != null)
return;
ListView<?> listView = (ListView<?>) comboBox.lookup(".list-view");
if(listView != null) {
cboxMouseEventHandler = (e) -> {
Platform.runLater(()-> {
String selectedValue = (String) listView.getSelectionModel().getSelectedItem();
if(selectedValue.equals("Item 1"))
System.out.println("Item 1 clicked");
});
}; // cboxMouseEventHandler
listView.addEventFilter(MouseEvent.MOUSE_PRESSED, cboxMouseEventHandler);
} // if
});
} // initComboBox
I am facing a problem like I have one Vaadin ComboBox with preselected value.I am changing the value from the ComboBox to another value,then ValueChangeEvent is fired.Inside the valueChange method I have written something to show a Popup Window which has Cancel and Ok button.Upon clicking on OK button of Popup Window I am going with the changed value of the ComboBox but upon clicking on Cancel button I just want to have the old value which was there before value change event fired.
Could anyone please help me out from the above issue?
Thanks in advance.
Maybe you can save whatever SelectedItem the combobox has when the event is fired, and if the user pressed cancel, you reset it to this stored item.
Before the click, how do you know what is selected in the click? Of course, you need to store the current selection somewhere. Lets call it currentSelectedValue (it could be NULL in the begining)
On click, you have a new selection, lets call it newSelectedValue
Now, if you do not want to go with this newSelectedValue, simply do this:
combo.setValue(currentSelectedValue);
I have some buttons in a BorderContainer and I would like to execute the attached event when the user click on the buttons. But, the parent has a click event too.
I would like to execute the action A when the user click on the button A, the action B with the button B and the action C if the user click on the background.
Actually, if I add the eventHandler to the bordercontainer, the buttons don't work anymore. No mouse cursor, no mousehover effect, and if you click on it, it's the action C which is launched.
My bordercontainer:
useHandCursor = true;
mouseChildren = false;
buttonMode = true;
In both buttons and bordercontainer I use the MouseEvent.Click event and both call the same function "click" which will execute different actions depending the properties of the event.target.
My bad. Thank to Timofei.
Both the bordercontainer and the click function were wrong.
In the bordercontainer, mouseChildren had to be set at true, which will let the children get the event too.
And in my click function, using event.target was a bad idea. It tried to get the properties from the bordercontainreskin. I had to use event.currentTarget instead. Finally I added a event.stopPropagation() to prevent the bordercontainer to catch the event too when the user click on a button. And now, everything is working well now.
Thank you
Here's an image of what my problem is:
I am using a combo-box as a Datagrid ItemEditor (Not just Renderer, my Renderer is a Label, double clicking on a cell makes the combo-box visible, as is the case with all item editors)
Now, selecting one of the entries in the combo-box is no problem. But my problem is only when i select the "Fruit" , which in turn pops open another layer called "Select Fruit" dialog
Questions:
How do i keep item editor, while the focus is on the layer; right now as soon as i click on the fruit , my handler popsup the "Select Fruit" dialog and the focus is on the layer. Once the focus goes out of the editor, the ItemEditor goes away and ItemRenderer label comes back.
I want to keep the ItemEditor alive! where do I hook up interms of events like begin/end ItemEdit etc?
You can keep your itemEditor alive by listening for DataGridEvent.ITEM_EDIT_END. Then you have a lot more control to do what you want. Some FYI from my blog:
DataGridEvent.ITEM_EDIT_END
- Dispatched when focus is removed from the cell
- List-based control’s default event listener will
1) use the .editorDataFrield property to deterine the property of the item editor to store the edited data; In a default TextInput control’s item editor, the “text” property would contain the new data.
2) Invoke destoryItemEditor() depending on the reason of the event
You can interrupt the default List-based control’s default event listener by using event.preventDefault() to
a) Modify the data returned from the item editor
b) Examine/Validate the data entered into the item editor; If the data is incorrect, you can halt Flex passing the data back from the item editor into the list-based control
http://knowledge.lapasa.net/?p=153
Try losing focus of your ItemEditor. Goto Combo Box Change Listener
protected function comboBox_changeHandler(event:ListEvent):void
{
// set focus out event on datagrid. Its like clicking outside the datagrid
event.target.parent.parent.parent.dispatchEvent(new FocusEvent(FocusEvent.FOCUS_OUT);
}
I've made an itemrenderer for the combobox control that shows a button next to the label.
If a user clicks this button, the item gets removed from the dataprovider. Works so far.
When he selects an item, the combobox closes, that's ok. But I don't want it to close when he removes an item.
So is there a way to cancel the change event?
I have tried several things, but to no avail.
I have to use the combobox for layout reasons, don't have enough space to use listboxes...
Thanks for your help.
In your custom itemrenderer , on mouse down handler stop Immediate Propogation
event.stopImmediatePropogation();
In your custom item renderer, try canceling the event in your button's click handler.
event.stopImmediatePropogation()