To trigger event or action on "TAB" key press on web dynpro view

Hi, I need to trigger event on "TAB" key press on web dynpro view , is it possible?How?

Hi Dipak
What Madhu said is correct. Tab key is pre-configured to move cursor from 1 field to next field. we can not create an event on tab key press.
Regards
Gaurav

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Unable to receive Tab key press event

Hello,
I have written a component which extends JComponent.
For that , when Tab key is pressed I need to process something.
I have overridden the function processKeyBinding in my class.
But I am not getting any event for tab key press. For all the other key press events, the function is being called.
I also tried to create a action and add it to the action map. But that is also not working.
Can anyone explain me why it is not working and give me the solution.
Thanks in advance,
Anu

public static void removeTabFromFocusTraverval(Component c) {
     int id = KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS;
     Set strokes = c.getFocusTraversalKeys(id);
     Set newStrokes = new HashSet(strokes);
     newStrokes.remove(KeyStroke.getKeyStroke("TAB"));
     c.setFocusTraversalKeys(id, newStrokes);
}

Make Tab Key Press Event

Hi You all,
I'm trying to make an automatic Tab Key Press after fill some data to oEditText , plz guide me how can i do that ?
I will appreciate your help.
Peter.
Edited by: PeterHoang on Oct 12, 2011 12:22 PM

Hi
You can use sendkeys method for this
SBO_APPLN.SendKeys("{TAB}")
Regards
Arun

Why i am unable to catch the 'TAB' key press?

hi
i have an application where i have 2 text fields and one button in order say t1, t2 and b1.
on tabbing t1 cursor moves to t2 and on tabbing t2 cursor moves to b1 and on tabbing b1 cursor moves to t1.
now when i press tab button on any of the component i have written a keyListener for that to catch 'TAB' key using the comparision
if( e.getKeyCode() == KeyEvent.VK_TAB )
but its not catching the tab key pressed on any of these 3 components....
why like this...
i want to catch the press of 'TAB' key and write some action for it... but unable to catch the 'TAB' key press.
anyone could help me in this....
thanx in advance,
-Soni

I seem to remember this question being asked before. I think the answer was that the FocusManager intercepts the TAB key. I don't remember the solution but you can try searching the forum.

Disable Alt+F4, Alt+Tab key press

Hi Guys, my WPF launched with maximized mode & i must restrict the users for the items:
'Alt + F4': Not to use 'Alt + F4' to close the application
'Alt + Tab': Not to switch to another application in the system, so i want to disable 'Alt + tab' key-press.
Note: I couldn't find any solution specifically for 'Alt + tab' key-press.
Thank you

Disabling ALT + F4 can be done by adding an event handler for the window's KeyDown event:
public Window1()
InitializeComponent();
this.KeyDown += Window1_KeyDown;
void Window1_KeyDown(object sender, KeyEventArgs e)
if (e.Key == Key.System && e.SystemKey == Key.F4)
e.Handled = true;
>>I couldn't find any solution specifically for 'Alt + tab' key-press.
The ALT + Tab keyboard stroke is handled at system level so you will need to hook into the Windows API to get access to the keyboard and intercept these calls somehow. Please refer to my example of how to use a low-level keyboard hook in WPF in the following
thread for more information:
https://social.msdn.microsoft.com/Forums/vstudio/en-US/cbb5d6ea-432d-42b5-a6e1-814cda9db030/registerhotkey-for-capslock-doesnt-work-in-laptops-keyboard?forum=wpf. There is probably no easy (or easier) way of doing this.
Here is an article that may also be helpful for you:
http://www.codeproject.com/Articles/14485/Low-level-Windows-API-hooks-from-C-to-stop-unwante
Hope that helps.
Please remember to mark helpful posts as answer to close your threads and then start a new thread if you have a new question. Please don't ask several questions in the same thread.

Anulate tab key press

Hi all!
I have a little problem.
How can I anulate a tab key press in a TextArea?
I have this TextArea in an Applet and it's ocurrs only with Microsoft VM. I try with consume() method of KeyEvent but no work.
Thanks a lot.
Sergio Mart�n

Hi arjunravinarayan!
Thanks for anwer!
The question is that I want no change in the TextArea content.
When a press the tab key, a tab space is added to TextArea.
Sergio Martin

Programming Key Functions in Web Dynpro Java

Hi, "Amigous"
How can I Programming Key Functions in Web Dynpro Java, like F1, F2, F3...??
Thanks in advance.
P:D. I don´t have Swine Flu.

Hi,
Please see the below link.
[http://www.octavia.de/fileadmin/octavia_files/content_bilder/Hauptnavigation/SAP_NetWeaver/WebDynpro/Web_Dynpro_Part_I.pdf]
Regards
Krishna

Is there a way to trigger button's action listeners from key events?

I rarely do GUI programming, especially not in Java. But now I am working on a GUI app and would like to get some help.
Say I have a simple GUI consists of a JFrame, and a bunch of buttons on its JToolBar. The buttons on the JToolBar are for navigation of a set of documents, first, prev, next, last etc. All buttons are assigned action command strings, and their all trigger the same instance of action listener. inside of the action listener, it does the correct navigation based on the action command from the event.
but some users want to be able to use the keyboard to do the navigation, because they think clicking the buttons are too slow.
So is there a graceful way to receive the different key press events and trigger corresponding navigation actions (hopefully it reuses the code that is already there, e.g. the action listener)? thanks.
-- Jim

but some users want to be able to use the keyboard to do the navigation, because they think clicking the buttons are too slow. That is always the case in any GUI. Any application should be designed to use either the mouse or the keyboard.
All buttons are assigned action command strings,That is not the way the GUI should be designed.
Instead you should be creating Actions. Then you can add the Action to a button and you can associate the Action with a KeyStroke which is called "Key Binding". This is the way all Swing components work. You can read the [url http://download.oracle.com/javase/tutorial/uiswing/TOC.html]Swing tutorial for more information and examples. Start with the section on:
a) How to Use Actions
b) How to Use Key Bindings

Handling keyTyped events in JTable for TAB key

In my app, I have a JTable. Some columns are non-editable.
I have attached a keyListener to the table and have overridden keyTyped() and keyReleased() methods.
In keyReleased(), I do something depending on the key code. For example: if its the VK_DELETE, I delete the row. If its some other user configured key, then I show a popup dialog where the user can enter some data, etc...
In keyTyped(), I first check if the column is one of the specific columns. Then I get the keyChar. After this, I show a dialog and pre-populate a JTextField on this dialog with that keyChar.
My issue is that 'TAB' key events arrive in keyTyped() and not in keyReleased(). As a result, the dialog is shown and the tab takes place inside the JTextfield which is incorrect.
I would like to ignore TAB keyTyped events. When I look up the keyCode in keyTyped() method, it is 0. So there is no way for me to tell what key was typed.
How can I ignore TAB events in my keyTyped() method?
thx

I now do the following to determine if TAB key has been typed
public void keyTyped(KeyEvent e) {
char c = e.getKeyChar();
if (c == KeyEvent.VK_TAB) {
Is this correct ?
Edited by: tsc on Sep 28, 2007 12:40 PM

Intercept tab key press

Hi,
For my application I need to use a textarea as a code editor
but my problem is that tabulation key is used to give the focus to
the next control but I want the tab key to simply insert a
tabulation.
Here is my current state:
I have this in my textarea definition:
keyDown="onKeyDown(event)"
and in a script block:
private function onKeyDown(event:KeyboardEvent):void
if( event.keyCode == Keyboard.TAB ){
ta.text+= "\t";
When I hit the tab key a tabulation is added as planned but
the focus go to the next control, I tried "event.preventDefault()"
and "event.stopPropagation()" but both failed, the focus still
manage to leaves the control. I also tried to change all my
controls focusEnabled properties to false but now the problem is
that the event is not event fired when pressing tab, it is fired
however when I press alt+tab...
I hope someone has a magical solution since I have no ideas
left :/

Hi arjunravinarayan!
Thanks for anwer!
The question is that I want no change in the TextArea content.
When a press the tab key, a tab space is added to TextArea.
Sergio Martin

Problem with Tab Key in JFileChooser when Details view is selected.

Hi all,
Iam using a JFileChooser in my application.When i click Details option in the JFileChooser the files with the size,Type and modified date are displayed.
When i am using tab to navigate through the JFileChooser,when the tab enters the area where the files are listed with details,the tab is not comming out of the File List area,instead it is traversing with in the files.How do i come out of the File List area using Tab key.I wanted to make a functionality similar to Windows FileChooser where in if we press Tab it goes to the file list and the next tab focus to Text field and so on.
Is it possible using JFileChooser??
Pls Help me,
Thanks and Regards,
Ravi

Hi,
looking at other threads, I think you will
have to get the button and modify/remove the tool tip
as you which.
this thread might help you, at least the way to get the components in the file
chooser:
http://forum.java.sun.com/thread.jsp?forum=57&thread=563002

Function keys in abap web dynpro

In webgui and BSP you could use function keys (F1-F12) from keyboard to trigger action. Is there any way( legal or unlegal) to do this in abap web dynpro also?
Most of mobile (pda) systems works via function keys..
KK

I should have added this. Here is a screen shot of how it works in 7.0 EnhP1. It is simply a new property added to certain UI elements:
http://www.flickr.com/photos/tjung/2711159225/

How call key Function in WEB Dynpro Java?

Hi,
Somebody know how to call key Function(F1, F2, ... F12) in WEB Dynpro Java to launch and Event?
Thanks in advance.

Hi,
You can WDHotKey property to define the different keyboard shortcuts to enable the user to trigger events with key combinations.
When the user presses the key board shortcut defined as the hotkey then onAction event is triggered.
The keys F2, F3, F4, F5, F6, F7, F8 and F9 are not supported, they call predefined functions provided by the Web Dynpro Framework.
The complete list of supported shortcuts is here:
http://help.sap.com/saphelp_nwce711/helpdata/en/48/1f1d65deaf733fe10000000a42189b/frameset.htm
http://help.sap.com/saphelp_nwce711/helpdata/en/62/832cf3cd35004aa4ea8a2378c8a2be/content.htm
If your question is answered then mark it so.

How do I perform an action on return key press in an inputListOfValues?

I know about the autoSubmit attribute, but I do not want to perform an action on a tab character or when exiting focus. Instead, I want to perform the same action as pressing a button when the user presses the return key in the input field. For example, an inputListOfValues for a search input, and a search button. When the user presses the return key, I would like the search to be performed. I'm sure that this can be done, I'm just not sure how. Thanks for any info.

I did something similar, on an input box, not on an inputListOfValues, but I assume it should work the same way more or less. I got it from
http://download.oracle.com/docs/cd/E15523_01/web.1111/b31973/af_event.htm#DAFBJGAH
I used it for my login page so the user doesn't have to click on Login, just press enter after entering the password. I just had to map the corresponding method binding.
BTW, the link above doesn't tell you have to add the javascript to the page. What I did was add an af:resource element inside of af:document.
Hope this helps.

How to show list of items when the user pressed tab key in an empty field

Hi all
i would like to know if there is a way to open a form with items list which will be shown to the user when he pressed the tab key within a field for instance "item code" field will present a search form with a table filled with item codes and their description.
i'm currently working in 2004 version. i know how to catch the event.
i'm creating a form with a matrix object binded to a datasource which is connected to the data base table which contains all the items.
what would like to know if there is a better way to this. maybe using buisness partner objects. and if so how
appriciate the help
Yoav

You Should use Formatted Search in this case.
You must create and associate a query for your field.
click on the field you want items to be listed and press Shift + F2
catch the keydown event of this field and check pval.charpressed = 9 (tab key press)
then execute
SBO_Application.SendKeys("+")

To trigger event or action on "TAB" key press on web dynpro view

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