input-event | nodejs module for reading keyboard | Runtime Evironment library

For reasons that have to do with Jetpack Compose input modifiers consuming all MotionEvents, I find myself writing my own scroll routine for a Composable, of which I have access to the ScrollState.

I have figured out everything I need except flinging. I can't see how to apply performFling(initialVelocity) on a ScrollState. All I can find in the docs are ScrollState.scrollTo and ScrollState.scrollBy, which aren't so useful with flings, since the scroll destination or size is unknown.

I also can't find a ScrollState listener, similar to onScrollStateChanged(state: Int) in the old Android world, that fires when scrolling state changes.

Here is what I have in case somebody can point me in the right direction:

When using a beforeinput of type InputEvent you can query the getTargetRanges() which return an array of static ranges that will be affected by the input event.

What's an example scenario in which getTargetRanges() will return more than one range? Or does it return an array 'just in case' there will be such an event in the future? Reason for asking is that I would like to properly test code that relies on the return value of getTargetRanges().

MDN: https://developer.mozilla.org/en-US/docs/Web/API/InputEvent/getTargetRanges
Spec: https://w3c.github.io/input-events/#overview

Playground:

I am creating a cross-platform application in Qt5.15 monitoring user activity. My code works fine in Windows,Mac, and Raspberry Pi-Desktop-version(Debian), but when it comes to ubuntu keyboard events and mouse click events are not working. Note that my application is running in the background while the user is working.

I am attempting to create a text box that accepts an expiration date from a CC. When the user types, I want to add a slash (/) after the first two numbers (to format the text like MM/YY). This works just fine. However, when I attempt to delete numbers after the slash has been added, my code just keeps adding the slash back in and won't let me delete any further. I referenced this article (Detect backspace and del on "input" event?) on how to detect backspace or delete on input event and built it into my code, but still doesn't work. Any thoughts on how I can get this to work or where I am going wrong?

I have an Electron app with a BrowserWindow which contains index.html for the app UI, and multiple BrowserView elements:

I have an application that can correctly generate events in Google calendar, and now I want to be able to modify any event by generating a Google meet link for it. Ideally I would like to generate Google meet links without any calendar events, but as far as I researched the only way for now is to create it as part of a Google calendar event.

I have followed the steps in https://developers.google.com/calendar/create-events?hl=en_US#java and I came up with the following function:

When a std::function is copied, are the code instructions it references copied as well?

An std::function is initialized via some form of callable, that points to executable code in some way (like a function pointer typically does). Now, when a function-object is copied, is this executable code runtime copied or internally referenced? To rephrase the question: If one instance of std::function is copied, are there then multiple copies of the same compiled code instructions in memory? Is std::function an object that actually stores the function code or is it more an abstraction for a function pointer?

The former would seem wasteful and I don't suspect it, but everything I found so far on the subject is either too vague, lacking or too specific for me to say for me for sure. For example

When the target is a function pointer or a std::reference_wrapper, small object optimization is guaranteed, that is, these targets are always directly stored inside the std::function object, no dynamic allocation takes place. Other large objects may be constructed in dynamic allocated storage and accessed by the std::function object through a pointer. - cppreference

gives some hints about how it's done but seems still too vague and maybe is not related at all to this question, because of further abstractions inside of std::function.

For context: I am trying to refactor some bad C-ish code that maps input-events (keystrokes, mouse input and the like) to a certain behavior, which is executed upon a target data structure which can be interpreted by the program as more specific input that have semantic context other than than keystrokes (, aka keybindings). One can suspect that requirements of behaviours varies drastically.
This was previously implemented with lists of defines and numbers specifying input-event-ids, and hard-coded behavior, which was selected by switch-case. We quickly approach the border of where this intial way of doing it becomes unwieldly.
To get out of the defined lists to an expandable, declarative, object oriented and flexible design I consider higher order functions.
Especially since some behavior is quite simple and repeatedly needed (like for example the toggle of one value in the output data structure) other behaviors are more complex with multiple conditions attached, I'd like to declare some of the behavior statically, but still would like to be open to just assign some special lambda in some cases. Since I need to store behavior per input (key, mousebutton, mouse-axis, etc.) and potentially many copies of one certain behaviour type can be instantiated in one time for different sets of keybindings, I wonder if this behavior should be referenced, rather than stored by value. In the former case, fresh lambdas would need to be owned by the behavior structures, but statically declared behavior does not, which pragmatically would lead to some shared_ptr shenanigans. In the latter case, by value, this would not be an issue, but I wouldn't want multiple copies of for example the toggle behavior to cause too much redundant overhead instead.

Would you please tell me where to find information on how a user could initiate these input types while typing in a textarea element? This W3C Editor's Draft lists the input types, many of which are common, but several are not common to me. For example, I didn't know that CTRL + Backspace deleted the entire previous word; and that is not given in the draft.

How can a user perform "deleteSoftLineBackward" in a textarea, for example, and that short list of different types of soft and hard deletions of lines of text?

Is it always by key strokes of some type, or are there other ways?

The reason I ask is I'm building an undo/redo chain for a textarea that will replace that in the browser because user-triggered button events alter the value of the textarea and break the browser's undo chain. Mosts of it works well for my limited needs, but some of these events I simply don't know how to perform as a user composing in a textarea.

Thank you.

I found out that there is a IE bug, where setting the placeholder is calling the input event as described here. This happens on page load, so there was no user interaction.

My code:

app.component.html