Keybinding engine capabilities: tap vs hold, side-aware modifiers

[eugenesvk]

Is the IDE Keyboard API powerful enough to allow IdeaVim to perform the following example actions that require differentiating between tap and hold as well as between left and right modifiers:

• LeftShift, LeftShift (double tap) to go to the beginning of a line
  • in visual mode with selection, in normal/insert mode without
• RightShift double tap to go to the end of a line
• Short tap of LeftShift to capitalize current word
• (while holding F) pressing J jumps down by half a page in insert mode

[citizenmatt]

This is something that you might be able to do with an IntelliJ plugin, where you can get access to the Swing key events, but I don't know how you could do it within the Vim infrastructure. If we can't represent it as a Vim map, then it would require additional custom code, and may be better suited to a separate plugin.

[eugenesvk]

Do you mean that this plugin must be as limited as the original vim? So if vim doesn't understand

:map LShiftLShift j then neither should IdeaVim?

[citizenmatt]

That's not what I said. IdeaVim already has some extensions to Vim behaviour, such as the <Action>(…) syntax to map to IDE actions.

But IdeaVim has keyboard handling for Vim like capabilities. It doesn't have anything that would handle the kind of feature you've described. Supporting it would require adding custom non-Vim-like keyboard handling, for non-Vim-like features, with non-Vim-like config. Because so much of it is outside of Vim-like behaviour, it might be better to implement it in a separate plugin.