Make it possible to activate the horizontal fake widget caret using a mouse

[oleq]

Since #6693 we display a fake caret when a user navigates using the keyboard. We're making it look like a browser feature so clicking in this area

could result in

like when the keyboard arrows are used. Users might expect it to work this way and this is one of the things that would make the "fake-caret illusion" even more real.

[magda-chrzescian]

We definitely should support the mouse clicking here. Not everyone uses the keyboard for navigation and there are some cases where we suggest that it is possible to set a caret with a click, but it doesn't happen. For example, it is impossible to put the caret inside the table cell if there is a widget element inside.

I am aware that the handlers before and after the widget covers this, but it is not very comfortable to be forced to click on some small element just to set a caret in the place where it seems to be allowed.

The same problem occurs when we try to set the selection between two widgets.

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The solution seems to be pretty simple if the widget takes up all the space inside the cell - we can activate the horizontal caret before/after the widget.

Alternatively, we could just get rid of the figure margins inside the table (for the first/last child only) - there would be no suggestion that the caret can be just set before/after the widget.

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But it gets more complex if it seems to be possible to write next to the widget - the horizontal caret will be misleading since the text will actually appear in a completely different place.

From the user's point of view, in this case, the new paragraph should be added after the widget, but I'm not sure if we are able to tell the difference between the previous case and this one. I believe that the only thing that differs them both is the imageStyle attribute (currently possible to be applied only on the images), which doesn't give us any direct or reliable information about the widget/text behavior - it can be completely custom imageStyle set by the developer or one of the default styles with custom CSS rules. So, we would need to know, where the new paragraph WOULD appear to decide if it should appear at all.

Alternatively, I think that a horizontal caret is still a better way to go, than clicking the button.

[magda-chrzescian]

⬆️ The problem escalates a bit for the inline images because they don't have the buttons for inserting a new paragraph. To write in the cell with only the inline image inside, the user has to select the image and then press the arrow button to activate the caret.

[oleq]

Maybe let's not mix these up. The original (block) issue is way more relevant in my opinion. The latter (inline in table) can be handled as a follow-up.

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