Events and Event Handlers

Hi,
I need to get the index of a specific line in a table. Selection mode is set to none. The first column contains a menu with two menuActionItems. When I choose an actionitem my event handler is called with parameter WDEVENT TYPE CL_WD_CUSTOM_EVENT. As I understand you have to use this parameter to get the index from the table line.
I have tryed with the following code in my event handler method:
DATA:
        node_lines TYPE REF TO if_wd_context_node,
        elem_lines TYPE REF TO if_wd_context_element,
        l_index TYPE i.
elem_lines = wdevent->get_context_element( name = 'LINES' ).
l_index = elem_lines->get_index( ).
This does not work. The elem_lines is initial after I try to get it.
Hope that someone can guide me in the right direction.
Thanks,
Morten

hi ;
this will work
DATA: mod_cell TYPE salv_wd_t_table_mod_cell,
        wa_mod_cell TYPE LINE OF salv_wd_t_table_mod_cell,
        msg TYPE string.
mod_cell =      r_param->t_modified_cells.
wd_comp_controller->set_material_dtl( ).
LOOP AT mod_cell INTO wa_mod_cell.
msg = wa_mod_cell-index .
msg = mod_cell-index .
l_message_manager->report_success( msg ).
Or else try this.
wd_event is return parameter
data: index type i.
index = wd_event->get_context_elementget_index->get_index( ).

Similar Messages

Retrieve event and event parameter in event based background job

Hi,
I think it must be possible but I cannot find documentation of it:
When a batchjob is triggered via an event (defined in SM62) how can I retrieve the event and event parameter from within the triggered job itself. We want to use the event parameter to trigger other batchjobs, but first we must be able to retrieve them...
Thanks
Tom

Standard SAP triggers can be found in TCODE SM64, Background Processing events.

How to write events and event handlers?

Any samples?
Thanks

You can generate your custom events and it is very easy.
You will have to extend the EventObject class in order to make an class representing the event.
Iam giving a brief eg:
class MyEvent extends EventObject
MyEvent(Object source)
super(source);//source which generated the event.
//your own code
interface MyEventListener
public void myEventPerformed(MyEvent e);
class abc
java.util.ArrayList arr;
abc
arr = new java.util.ArrayList();
public synchronized void addMyEventListener (MyEventListener l)
arr.add(l);
public synchronized void removeMyEventListener (MyEventListener l)
arr.remove(arr.indexOf(l));
protected void notifyTransEvent(Object source)
MyEvent tEvent = new MyEvent(source);
Iterator itr = arr.iterator();
Iterator itr = arr.iterator();
while(itr.hasNext())
((MyEventListener)itr.next()).myEventPerformed(tEvent);
Now anyone implementing the MyEventListener inetrface can be added in the ArrayList.The ArrayList is the list representing the interesting parties who want to receive the event.When registered they will receive the event.
This class abc is just like an component which on certain situations generate event.You can call notifyEvent in any case where you want the event to be generated.
You will then add this class to your main class as this
class xyz implements MyEventListener
abc obj;
xyz()
obj.addMyEventListener(this);
public void myEventPerformed(MyEvent e)
//your handling code
Hope this example will suffice.

Time-zone independent events and events that span timezones

Hi.
I use Calendar rather heavily. In fact, I have events in my calendar that date back from 1995 or so that have migrated forward from my Newton through Palms and Blackberries and now to iPhones - some migration or coexistence between the Mac and these devices was painful, to say the least. But, I digress...
For the record, I have Time Zone Support off on my iPhone and iPad. It's also off in Calendar on my Mac; the Mac is my 'authoritative' source of calendar (and address book) info. When I move, it changes timezones. For the most part, the iPhone and iPad do the right thing for events that have actual real times to them such as meetings. If I'm supposed to be on a phone call at 7AM Seattle time, when I go to Boston, I need to be on at 10AM and it does all the devices do the right thing with those events.
But, I want to create a recurring (daily) calendar event that happens at the same local time every day, regardless of what timezone I'm in. For example, I create such an event in Seattle for 9AM Seattle time (PT). When I go to Boston, I want it to happen there at 9AM ET; and the same if I went to India - 9AM IST.
Any thoughts? I live with this inconvenience for other things working quite well.
My other desire is when, for example, putting airplane trips into the calendar. I'm in Seattle and putting in Alaska Airlines Flight 12 which departs Seattle at 9:05AM PT and arrives at 5:34PM in Boston (ET). It would be wonderful, if for the the start and end times for event scheduling, there was a pull-down or scroll-wheel from which one could select the time zone. Now, I have to do the calculation and do 9:05AM departure and 2:34PM arrival. It's gets a little more difficult when one is going to places where daylight savings is not observed or if you are unfamiliar with the time differences (as when flying direct from the US to India).
Any thoughts on this problem??
aps.

Hey Armando Stettner,
Thanks for the question, and what a great question it is!
With time zone support on, you can edit an individual event and change the time zone for that event. This list will include options for your default time zones, UTC, and "floating" - the latter of which is what you are looking for. Floating changes the event to occur at the specified time, local time.
For information on changing an event's time zone, see the following resource:
Calendar: Change an event’s time zone
http://support.apple.com/kb/PH11531
I look forward to hearing how this works for you.
Cheers!
Matt M.

Query about event and event handling

hi,
how exactly events are bieng generated. And how they are transmitted and how they
are caught and handled at low level. I want to trigger my own event whcih can be listen
by my own listener or some existing listener (obviously implemented from some java listener).
so help me out.
TIA
bhups

Well, first you create an interface such as FooListener where you define methods, such as foo().
Now you can make classes that have the method addFooListener(FooListener foo). Then in that class, you can for example decide that doing a certain thing (or based on the time of day or whatever) the class calls all the foo()'s of it's FooListeners and there you go.
Example code:
public interface FooListener {
    public void foo(FooEvent evt);
public class FooEvent {
   private String reason;
   public FooEvent(String reason) {
       this.reason = reason;
   public String getReason() {
      return reason;
public class Bar {
    List listeners = new LinkedList();
    public void addFooListener(FooListener foo) {
        listeners.add(foo);
    protected void fireFooEvent(String reason) {
       Iterator itr = listeners.iterator();
       FooEvent evt = new FooEvent(reason);
       while(itr.hasNext())
          ((FooListener)itr.next()).foo(evt);
    public void doBar() {
        // code omitted
        fireFooEvent("Bar done");
}Howzat?

Events and event chains

Hi,
can anyone mail me screenshots as to how event creation(sm62) and job creation looks like (sm36) at
[email protected]

Hi Karthik
When in doubt, visit help.sap.com and all your questions would be answered!
anywayz, for SM36, visit
http://help.sap.com/saphelp_erp2005vp/helpdata/en/c4/3a7ede505211d189550000e829fbbd/frameset.htm
this should set u up
Prakash
Assigning points is a way of saying thanks on SDN!!

[JS] Basic question about event listeners and event handlers

I am very new to the whole topic of event listeners and event handlers. I'd run the test for the following problem myself, but I don't know where to start, and I just want to know if it's impossible -- that is, if I'm misunderstanding what event listeners and event handlers do.
Say I have an InDesign document with a text frame that is linked to an InCopy story. Can I use an "afterImport" event listener on the text frame to perform some action any time the link to the InCopy story gets updated? And will the event handler have access to both the story that is imported, and the pathname of the InCopy file?
Thanks.

Thank you, Kasyan.
Both of those are good solutions.
We are currently using InDesign CS4 and InCopy CS5. I'm hoping to get them to purchase the whole CS5 suite soon, since I'd like to start writing scripts for InDesign CS5 as soon as possible, as long as I'm going to have to be doing it in the not too distant future anyway. The greater variety of event handlers sounds like it might be something that is crucial to the project I'm working on, so that adds to the argument for getting CS5.
Thanks again. You have no idea how helpful this is. I made some promises to my boss yesterday that I later realized were based on assumptions of mine about the InDesign/InCopy system that didn't make any sense, and I was going to have to retract my promises. But after reading your response I think I can still deliver, in a slightly different way that I had been thinking before.
Richard

Problems with .chart-plot-background and event handlers

Hello. I'm trying to add event handlers to my chart so that the user can be allowed click within the chart itself to perform certain actions like dragging, zooming, etc. To avoid having to deal with handling mouse clicks that lie outside the chart itself (for example on the axes), I've found that:
.chart-plot-background
is the Region that gives me the entire chart and nothing else. However, when I attach mouse listeners to this Region, the event is only registered on half of the cells in the chart. If you've seen the default JavaFX Chart background layout, you know that it contains alternating rows of cells with slightly different coloring. I've found that only the rows with the lightest gray coloring actually register a mouse click on them, which makes me believe the dark grey cells are not part of the .chart-plot-background, but something else on top.
To me, this feels like an oversight in how the regions of the chart are defined. Why can I not get a listener to work on the whole chart and nothing else? Currently the only workaround seems to be to take the Region:
.chart-content
instead, and compute the difference between this region and the .chart-plot-background in order to manually suppress mouse clicks that lie outside .chart-plot-background.
Anyone have suggestions? Is this worth issuing on the JavaFX Jira?

Hello,
I'm not an expert on controls, but here is my guess based on your description: when you register an event handler on a "background" node, it is called only when the mouse hovers over the background node - I suppose the light gray is the background with the light gray cells being transparent and dark grey cells being filled. So the behavior seems correct - you can't expect the events to be delivered to background when it is covered by other nodes. I think you really should register the handler on the entire chart and filter out the events you don't want to handle. This however should not require much of computing the difference between the regions, it should be possible to do just something like
if (!background.contains(event.getX(), event.getY())) {
return;
Provided that the background doesn't reach under the axes as well. Note that if there are any different transforms between the background and the node with the handler registered on it, you may need to recompute the coordinates by
background.sceneToLocal(event.getSceneX(), event.getSceneY());
And use the contains method on that.

Acrobat SDK: How to get events and write event handlers in c#

I am trying out to get events from a pdf doc and handle it in my c# code with the samples that come with Acrobat-SDK.
I am yet to understand how I can do it. I am yet to discover the class that provides me the events. All the classes currently expose methods only. It might be that I am missing something for sure.
Can somebody help?
My use case is:
the user will open a pdf doc and my application (or my app can trigger opening the pdf doc)
when the user selects some text from the pdf doc, my app should get the event
My event can handle the selection and get the selected text.
Put a bookmark on the selection in the pdf doc (with additional attributes)
the pdf doc retains such bookmarks when the pdf is saved.
bookmarks in the pdf should be available for edit.
A different app/code should be able to parse and retrieve these bookmarks along with the additional attributes of the bookmark.
I hope, I have not asked too much.

There are no “event handlers” for C# in the Acrobat SDK. You will have to “poll” for things such as selected text.
Also, I don’t know what sort of “additional attributes” you are thinking about, but that may or may not be possible from C#.

INTERFACE AND EVENTS IN ABAP OO

Can some one explain me the real time need with example for use of interfaces and events in abap objects
(asking interface and events along doesnt mean that i am relating them).
<removed_by_moderator>
Pankaj Giri
Edited by: Julius Bussche on Jul 14, 2008 1:36 PM

Events :
Technically speaking :
" Events are notifications an object receives from, or transmits to, other objects or applications. Events allow objects to perform actions whenever a specific occurrence takes place. Microsoft Windows is an event-driven operating system, events can come from other objects, applications, or user input such as mouse clicks or key presses. "
Lets say you have an ALV - An editable one ...
Lats say - Once you press some button you want some kind of validation to be done.
How to do this ?
Raise an Event - Which is handled by a method and write the validation code.
Now you might argue, that I can do it in this way : Capture the function code - and call the validate method.
Yes, in this case it can be done.. But lets say .. you change a field in the ALV and you want the validation to be done as soon as he is done with typing.
Where is the function code here ? No function code... But there is an event here - The data changed event.
So you can raise a data changed event that can be handled and will do the validation.
It is not user friendly that you ask the user to press a button (to get the function code) for validation each time he enters a data.
The events can be raised by a system, or by a program also. So in this case the data changed event is raised by a system that you can handle.
Also, Lets say on a particular action you want some code to trigger. (You can take the same example of validation code). In this case the code to trigger is in a separate class. The object of which is not available here at this moment. (This case happens very frequently).
Advantage with events : Event handlers can be in a separate class also.
e.g : In the middle of some business logic .. you encounter a error. You want to send this information to the UI (to user - in form of a pop up) and then continue with some processing.
In many cases - A direct method call to trigger the pop up is not done. Because (in ideal cases) the engine must not interact with UI directly - Because the UI could be some other application - like a windows UI but the error comes from some SAP program.
So - A event is raised from the engine that is handled in the UI and a pop up is triggered.
Here -- I would have different classes (lets say for different Operating Systems). And all these classes must register to the event ERROR raised in application.
And these different classes for different Operation systems will have different code to raise a pop-up.
Now you can imagine : If you coded a pop-up for Windows (in your application logic) .. it will not work for Mac or Linux. But of you raise a event.. that is handled separately by a different UI classes for Win, Linux or Mac they will catch this event and process accordingly.
May be I complicated this explanation .... but I couldn't think of a simpler and concrete example.
Cheers.
Varun.

Order of elements and events.

INTRO
Hi Oracle community.
A while ago I started a thread here on the forum where I had put three different subjects to be treated. The user jsmith guided me saying that I was supposed to separate things, dividing each subject in a separate thread. The original discussion is at the following link:
Interesting things, however, unknown? StackPane, animations and filters.
ABOUT
So in this discussion, I will be talking about input events and maybe about event filters. I created a JavaFX 8 (b123) application that checks the mouse click on certain nodes. Basically I have a panel of buttons. Behind this panel, I have a scroll pane with rectangles. The rectangles are contained within a Group, and the buttons are in a VBox. The Group is set as ScrollPane content. VBox and ScrollPane are within a StackPane, which becomes the root of scene graph. If we observe the nodes tree, we'll find the following scenario:
IMAGE
Here is my source code:
import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.geometry.Pos;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ScrollPane;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;
public class ScrollTest extends Application
    //                                                                                                       MAIN
    public static void main(String[] args)
        Application.launch(args);
    //                                                                                                 INSTÂNCIAS
    // CONTROLS
    private Rectangle[] rectangles;
    private ScrollPane scrollP;
    private Button[] buttons;
    // LAYOUTS
    private StackPane root;
    private Group group;
    private VBox vbox;
    //                                                                                                  INÍCIO FX
    @Override public void start(Stage estagio) throws Exception
        this.iniFX();
        this.confFX();
        this.adFX();
        this.evFX();
        Scene cenario = new Scene(this.root , 640, 480);
        estagio.setScene(cenario);
        estagio.setTitle("Programa JavaFX - RDS");
        estagio.show();
    /** Just instantiate JavaFX objects.*/
    protected void iniFX()
        // CONTROLS
        this.rectangles = new Rectangle[5];
        this.scrollP = new ScrollPane();
        this.buttons = new Button[6];
        // LAYOUTS
        this.root = new StackPane();
        this.group = new Group();
        this.vbox = new VBox();
    /** Just sets the JavaFX objects.*/
    protected void confFX()
        // CONTROLS
        for(int count = 0 ; count < this.rectangles.length ; count++)
            this.rectangles[count] = new Rectangle();
            this.rectangles[count].setWidth(Math.random() * 100 + 20);
            this.rectangles[count].setHeight(Math.random() * 100 + 20);
            this.rectangles[count].setFill(Color.rgb((int) (Math.random() * 255) , (int) (Math.random() * 255) , (int) (Math.random() * 255)));
            this.rectangles[count].setTranslateX(Math.random() * 600);
            this.rectangles[count].setTranslateY(Math.random() * 600);
            this.rectangles[count].setRotate(Math.random() * 360);
        for(int count = 0 ; count < this.buttons.length ; count++)
            this.buttons[count] = new Button("Button - " + count);
        // this.scrollP.setVbarPolicy(ScrollBarPolicy.ALWAYS);
        // this.scrollP.setHbarPolicy(ScrollBarPolicy.ALWAYS);
        this.scrollP.setPrefSize(400 , 400);
        // LAYOUTS
        this.vbox.setAlignment(Pos.CENTER);
        this.vbox.setSpacing(20);
        // This doesn't solve my problem.
        // this.vbox.setMouseTransparent(true);
    /** Just create the realtion between nodes, and the root.*/
    protected void adFX()
        for(int count = 0 ; count < this.rectangles.length ; count++)
            this.group.getChildren().add(this.rectangles[count]);
        for(int count = 0 ; count < this.buttons.length ; count++)
            this.vbox.getChildren().add(this.buttons[count]);
        this.scrollP.setContent(this.group);
        this.root.getChildren().add(this.scrollP);
        this.root.getChildren().add(this.vbox);
    /** Just add some events to some nodes for debugging.*/
    protected void evFX()
        this.vbox.setOnMousePressed(new EventHandler<MouseEvent>()
            @Override public void handle(MouseEvent e)
                System.out.println("Mouse pressed inside VBox.");
        this.scrollP.setOnMousePressed(new EventHandler<MouseEvent>()
            @Override public void handle(MouseEvent e)
                System.out.println("Mouse pressed inside ScrollPane.");
        if(this.rectangles.length > 0)
            this.rectangles[0].setOnMousePressed(new EventHandler<MouseEvent>()
                @Override public void handle(MouseEvent e)
                    System.out.println("Rectangle pressed.");
                    rectangles[0].setFill(Color.rgb((int) (Math.random() * 255) , (int) (Math.random() * 255) , (int) (Math.random() * 255)));
THE PROBLEM
I wish I could click the mouse on VBox buttons, but also in the scroll pane, and in it's internal contents (the rectangles). I tried changing the VBox mouseTransparent property to true, and modify mouseTransparent to false on each VBox button, but that did not work. I've been reading the JavaFX documentation talking about routing events, and found the following:
The route can be modified as event filters and event handlers along the route process the event. Also, if an event filter or event handler consumes the event at any point, some nodes on the initial route might not receive the event.
Could it be that VBox is filtering events so they do not reach ScrollPane? Or is this being done by StackPane in some other manner? Does anyone have any idea what I could do?
In any case, I thank you for your attention.

You might need to modify the event dispatch tree so that the events get beyond the VBox. I'm not saying this is the right thing to do, but something worth looking at.
root.setEventDispatcher(new EventDispatcher() {
@Override
public Event dispatchEvent(Event event, EventDispatchChain tail) {
tail.append(group.getEventDispatcher());
return tail.dispatchEvent(event);
There is some info on event processing at Handling JavaFX Events: Processing Events | JavaFX 2 Tutorials and Documentation

Use of events and interface in class

Dear All,
Could you please explain why we use events and interface in class.
Also please tell me the use of TRY and ENDTRY.
Regards,
Amar

Events may be a way of communication b/w classes. Imagine you want to call certain code from one class, you would need for that public method, but you don't want to expose it to external user. So you may use events for that. Also events are used to notify that certain state of class has changed (tiggering event). Then all handlers of this event executes and react accordingly.
Interfaces are a way of provide a service to class which implements it. Imagine that you have class office and hotel and gas station . They don't seems to have something in common. However, there can be some external energy provider which will be an interface. Each class which want to have a lease with this energy provided can implement it (the implementation can differ in some way), so he can provided energy to different classes. This way you will achieve polimorphism (meaning you call one interface method, but code behind it differs from class to class).
Interfaces are also means of multiple inheritance. One class can implement several service (interfaces). In contrary it can oly inherit from one class.
Try endtry are just new way of handling exceptions .
Try to search a litte bit you will find lots of info on the above.
Regards
Marcin

Thumbnail selections, events and selection lists

I'm experimenting with creating an external data file to track Bridge selections. I've come across two problems, one of which I have found a fix for, the other not.
If I obtain 'app.document.selections' following a 'select' event type, the list I get is actually the list prior to the latest selection. So if I had test1.jpg selected and switch to test2.jpg, app.document.selections[0] will be test1.jpg. The same applies to using 'deselect' that actual deselection does not show in the app.document.selections list when the event is triggered.
The fix for this is to use event type 'preview' which returns the latest selections at the moment you change the selection.
Unfortunately, preview does not update when you click when you deselect - and since deselect and select events both seem to come ahead of the updating of the selections list, using them does not work.
Any suggestions / ideas on this.
Andrew
Here is the code I am currently using:
onThumbnailEvent = function( event ){
if( event.object.constructor.name == "Thumbnail" ){
if( event.type == "preview" ) {
ah_CollectBridgeData();
return {handled:true};//stop processing event handlers
ah_writeData = function (tFile,tString) {
if (tFile.open('w')) {
if (tFile.write(tString)) tFile.close();
else throw ("Error saving file list\n" + tFile);
else throw ('Error, Data File Not Opened\n' + tFile);
ah_CollectBridgeData = function () {
var tFile = new File ('/c/Program Files/Adobe/Adobe Photoshop CS2/Presets/Scripts/nn-test3.dat');
var filestr = ah_fileThumbnailsToFilestr(app.document.selections);
ah_writeData(tFile,filestr);
ah_fileThumbnailsToFilestr = function( thumbnails ) {
var fileAr = new Array();
for ( var i = 0; i < thumbnails.length; i++ ) {
if(thumbnails[i].spec instanceof File) fileAr.push(thumbnails[ i ].spec);
return fileAr.toString();
// register the handler
allDocEventHandlers = { handler: onThumbnailEvent };
app.eventHandlers.push( allDocEventHandlers );

ugh, hadn't thot that thru yet on the deselect...
Looks like you get "n" deselects in a row.
Run this in ESTK, keep estk's console visible then select/deselect in bridge...
#target bridge
EventWatcher = {};
EventWatcher.lastEvent = "";
EventWatcher.eventCatcher = function( evt ) {
$.writeln( evt.type + " Event" );
if ( evt.type == "deselect" ) {
$.writeln( "Thumbnail Deselect: " + evt.object.path );
// debugger;
EventWatcher.lastEvent = evt;
return { handled: false };
app.eventHandlers.push( { handler: EventWatcher.eventCatcher } );
All the deselects (on a multiple deselect) happen in a row, and you're only interested in the last one, and you're not even interested in that. app.document.selections will be correct on the event (regardless of type) after the last deselect.
Hold off doing anything on a deselect until the event type changes.
if ( event.type = "deselect" ) {
myNamespace.loadedGun = true;
} else {
if ( myNamespace.loadedGun ) {
nowWriteMySelectionFile();
Since it's possible that you won't get another event for some time, you might want to setup a scheduled task that checks to see if the "gun is loaded", and if so to write the files.
Thanks for the kind words. I really enjoy working with everyone. It's a great break from head-down coding, and I learn something from just about every case.
Bob
Adobe WAS Scripting

Business Event Brochure in Training and Event Management?

Hi Guru's
My client has a requirement as follows. The training administrator decides the Business Event Types which for which superiors can book their subordinates or not. Those events are stored at a particular place. Once the administrator stores them, a mail should be triggered to all the superiors. Thus superior can have a list of event types for which he can book his subordinates. When he books for such events, a mail should be triggered to his subordinates regarding the training event. If an employee books for an event, a mail should be triggered to his superior for approval.
How is this possible? According to me, those events will be "Included in Brochure" (in Business Event Type Infotype). Am I right?
Please suggest me.
Points assured!
Thanks in advance.

Hello ,
see the links it might help :
Business processes of Training and Event Managment
Training and Event Management
Lots of workflow

TEM and FI/CO (Training and Event Management)

Hi All,
I wish to track actual cost per event in PE (TEM - Training and Event Management). Was considering having a Internal order per Instance of event. Have any Idea on how to set up something like this?
Appreciate all ideas,
LB

Hi Dean,
using internal orders you have to consider that sending and receiving cost center have to in the same company code.
If you do not want to distribute the costs to FI/CO but only report them, you can use the cost items provided by TEM. We have set up something similar for our plants in South Europe.
We have created some cost items and fill them manually with the training costs. Additionally we have created a report that evaluated this costs and combines them with the employee costs (derived from salary).
Best regards
Michael

Events and Event Handlers

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