So, I asked another question here:
How to tell the difference between a user-tapped keyboard event and a generated one?
One of the answers that came up was to use the "mouse pressure" field (unlikely to be used for a keyboard event) to mark the event as needed.
So, I'm trying:
CGEventSetIntegerValueField(myKeyboardEvent,
kCGMouseEventPressure,
0xFEEDFACE);
The problem is:
I don't know what 0xFEEDFACE means. What does that value default to? What should I set it to? How can I check whether it has been marked by me?
Running the above code gives me an error:
<Error>: kCGErrorIllegalArgument: CGEventSetIntegerValueField: invalid event
0xFEEDFACE is just a dummy value. It's one of a number of 4-byte numbers with silly hex spellings that will stand out when you're looking at memory.
The function takes three arguments: an event, a CGEventField (which is an enum), and an int64_t (8-byte signed integer) whose range of valid values probably depends on the field. I used 0xFEEDFACE to indicate that you could try putting an arbitrary "magic" value in there,* and then check for it when you received the event, using CGEventGetIntegerValueField. If your event tap receives a new event that has your "magic number", then it was (almost certainly) sent by you. Otherwise, it was sent by the system.
To sum up and answer your explicit questions: that argument doesn't default to anything; you should pass something arbitrary that is unlikely to be used by the events system (you might want to inspect a series of events sent by the system to see what "real" values look like); the idea is that your arbitrary value allows you to check that the event was marked by you.
As for the error, it looks like I was wrong. I thought that you might be able to set any field on any kind of event (e.g., using the "mouse pressure" field on a keyboard event, since the system almost certainly won't have set that) to pass along arbitrary information (and so identify the events that you've constructed yourself). It seems, however, that Event Services won't let you do that. There may be other fields that you can use, but I don't know for sure.
*I assumed you would understand that it was a junk value; sorry.
Related
I'm implementing an EventFiringWebDriver, respectively, a WebDriverEventListener, where I need data both from before and after particular events (e.g. beforeClickOn and afterClickOn). Since I wasn't able to find anything in the docs, I would like to know if a situtation can occur where a before event isn't immediately followed by its corresponding after event? Something like:
(beforeEventA, beforeEventB, afterEventA, ...)
So, can I rely on the invocation order of before and after?
As you are implementing WebDriverEventListeners interface this surely can happen based on how you define the implementing methods.
Let me give you an example, say you are performing a click event and in beforeClickOn method you tried to perform an operation such as refesh page, so the behaviour will go like this:
beforeOnClick->beforeRefresh->afterRefresh->afterOnClick
As now you can see that the behaviour is totally dependent on how you want your driver to perform the task.
Hope this helped.
In our company, repository objects must be created with original language EN.
Is there a way to check the logon language in case of creating a new object in the ABAP repository?
Desired behaviour:
SE80 - Create program/class/data element/table/....
==> user exit/badi checks the logon language. When it is not 'EN', the creation will be refused.
regards,
Umar Abdullah
I know there is a exit for this but I haven't remember exact name. You can use general purpose for finding exit. Go to SE24 and open CL_EXITHANDLER class, find GET_INSTANCE method and add break point. Then start creating item, it will pause on debugger multiple times, try to find suitable one.
As #mkysoft suggested, you may implement a check in the BAdI CTS_REQUEST_CHECK, method CHECK_BEFORE_ADD_OBJECTS, which is invoked when the object is about to be attached to a transport request. Raise the exception CANCEL to make the attachment fail (and so the object is not created too).
EDIT: sorry, ignore my answer, "this method is NOT released for Customer usage" as said in note 2150125 - Method CHECK_BEFORE_ADD_OBJECTS not triggered
DISCLAIMER: THE METHOD DESCRIBED HERE IS ABSOLUTELY NOT RECOMMENDED.
As correctly pointed out by the other members there is no standard and customer-exposed method to achieve your requirement, but if you absolutely must enable this check during creation you can use the below method. As well as the previously offered to you, it also involves modification of SAP standard.
There is a system BAdi CTS_TADIR_SUBSCREEN that is located inside enhancement point CTS_ES_TADIR_POPUP. They are SAP internal and not released for customer usage, so do this at your own risk.
Implementation procedure:
Step 0. First thing you need to change is a SAP internal usage flag, for which you need Object Access key which can be obtained from SAP or from SAP partner that made the implementation in your org. In virgin state this BAdi throws the error if you try to implement it
So hereinafter we assume that you already ticked off this checkbox in BAdi settings
Step 1.
In order to implement the BAdi one need to implement enhancement spot prior to that. This is the most complicated part, because despite we disabled internality flag the SAP-namespaced enhancements must be stored only in SAP-namespaced objects. By SAP namespace I mean non-Z, non-Y and non-T (Test). This means to implement this enhancement, besides modifying the enhancement definition, one need to create, for example, CTS_ES_TADIR named enh.impl., and save it to non-Z package, which you also need to create. Your enhancement implementations selector should look somehow like this
On the above screen only the second will work, all the rest Z will not.
Every non-Z object need Object Access Key, remember? Too bad. But just to show the proof-of-concept, I will proceed.
Step 2. After you created the enh. implementation in SAP-namespace it will propose you to create the BAdi implementation. The same principle applies here: only SAP-namespaced container for SAP-namespaced objects, hence CTS_TADIR_SUBSCREEN should have implementing class for example CL_TADIR_SUBSCREEN. During the creation of enhancement you will see many warnings
but finally you should have something like this, where all system-named objects are created and the enhancement/BAdi is activated.
Step 3. In order to get the BAdi working we need to enable this subscreen processing
during the playing with enhancement I found out that BAdi class is not being triggered standalone, without screen events not enhanced, so to make it work you need to touch a screen enhancement for screen 100
If you do not wanna modify screen elements logic, just put the dummy enhancement in SHOW_TADIR dialog module in the end of the include LSTRDO18
PROCESS BEFORE OUTPUT.
MODULE SHOW_TADIR. "<-- create the dummy enhancement here
CALL SUBSCREEN subs_info INCLUDING gv_badi_prog gv_badi_dynnr.
for example declaration statement like I did
Step 4. Activate your created BAdi class and put the necessary logic there. I wasn't able to trigger method GET_DATA_FROM_SCREEN, but PUT_DATA_TO_SCREEN worked fine
If we put this simple processing for your requirement
METHOD cts_if_tadir_subscreen~get_data_from_screen.
IF object_data-l_mstlang <> 'E'.
MESSAGE 'Objects in non-English languages are not allowed!' TYPE 'A'.
ENDIF.
ENDMETHOD.
it will not allow creating objects in languages other than English.
The check in method get_data_from_screen is being done before showing the screen so language is determined from system logon settings. If to play more with this BAdi, I suppose the method GET_DATA_FROM_SCREEN can also be enabled, which will make it possible to check user input, i.e. the case when the user gonna change the default language.
So I'm using CodeMirror, and I'd like a way to omit certain edits from the undo state. In particular, I've got a situation where I want one keystroke to
Replace a portion of the mirror text AND
Auto-indent the fresh region
Doing this naively would mean that using the keystroke, then hitting undo would leave the mirror containing the new text without the indentation. I'd like a single undo to restore the initial text rather than going to the unindented version of the replaced text.
The only API-supported approach seems to be doing a .getHistory call before the indent, followed by a .setHistory call immediately afterwards, but the docs imply that this is a bad idea. Specifically, the effects of this are undefined if the contents of the mirror changed between .getHistory and .setHistory calls, which is the whole point in this situation.
There's also an addToHistory flag in the text marking API, but it's only available marking rather than arbitrary edits like indentation.
Is there a good way to do what I'm looking for here?
Changes made within a single operation will result in only a single history event.
If arranging for a single operation isn't viable, the origin field of a change (settable as an argument to replaceRange and replaceSelection, and in other cases a little more awkwardly by registering a beforeChange event handler) determines the type of history-event-combination that CodeMirror does. If you assign an origin that starts with an asterisk (*) character, subsequent changes with the same origin will be combined. If the origin starts with a +, subsequent same-origin changes will be combined when they occur within options.historyEventDelay milliseconds.
Basically what I am trying to do is have the player respond to a message in which they are required to input numbers only. From that point, I could parse the String into an int and use it towards the rest of my code. Also, I am trying to make it so this occurs in my event method. Any help is greatly appreciated!
What you essentially want to do is store the player in a container until the next time they talk, then remove them. This, represented in pseudocode, would look like the following:
on your condition:
add player to collection
on player chat:
does the player exist in the collection?
yes: is input a valid number?
yes: proceed with execution, remove player from collection after
no: print error
no: ignore, let event pass
Since the MineCraft protocol does not allow input verifying, there will be cases where the user may submit non-numerical characters. Integer.parseInt, or its sibling valueOf will throw an exception if this is the case.
To prevent memory leaks, you should remove the player from the collection when they log off. Alternatively, you could store them in a weak reference container. A good one for this scenario would be a WeakSet, which you can essentially obtain via Collections.newSetFromMap(new WeakHashMap()). Weak references get garbage-collected if all other references are eliminated, so this reduces the risk of a memory leak.
You should look into the bukkit conversation API. It for doing exactly this. You can find tutorials online, but basically to set it up you do this.
Build a conversation with the ConversationFactory
ConversationFactory HudConvo = new ConversationFactory(plugin)
.withModality(true)
.withEscapeSequence("exit")
.withFirstPrompt(new HudConversationMain(plugin, player, 0))
.withLocalEcho(false);
Conversation conversation = HudConvo.buildConversation((Conversable) player);
Begin the conversation
conversation.begin();
Make the first prompt as a class that either extends one of the input type prompts (i.e. StringPrompt) or implements the Prompt abstract class.
Fill in the methods getPromptText() and acceptInput(). getPromptText() constructs the message to be displayed to the player and acceptInput() takes what the player types and reacts to it with a new prompt.
I hope this helped. If you have questions, feel free to ask.
My scenario is the following:
I have a workflow (lets call it customActivity1) that do the basic actions for my system. I also have another workflow (customActivity2) that uses customActivity1 and do higher level actions. When I call customActivity1, I must pass on a few parameters, like Boolean or String values. I want to show some of these parameters as a checkbox or combobox (so the developer of customActivity2 can pass on only valid values) and found out that I can do that by setting the argument as PROPERTY (instead of In).
By doing a research, I also found out that you can’t directly use this argument in expressions, so I keep getting errors on my customActivity1.
That said and knowing that I need to narrow what the designer can pass on, how could I do that without using an activity designer or where could I find an answer?
I also attached two pictures, one of what I need and the other of the error I’m getting.
Thanks in advance.
The reason an InArgument only shows you a text field instead of a checkbox is because they are expressions not literal values. There is still type checking though, if you enter the value 1 you get the error message that an integer cannot be converted into a boolean.
You cannot do this. You can only bind to InArguments.
If you bind an InArgument and look at the xaml, you'll see something like this:
<p1:MyActivity MyInArgument="[BoundValue]" ...
The Workflow Runtime knows how to handle these. It doesn't know how to handle binding POCO properties.
If you want to model data flow but want to have a different user experience in the property grid I recommed using arguments (as they convey data flow semantics) and customizing the property grid for those arguments. There is a sample that demonstrates how to do this in the WF4 samples (sample readme available at http://msdn.microsoft.com/en-us/library/ee834515.aspx)