Instead of two levels of focus with `focus` and `selected`, use a recursive
level. The components set the one "active" and hbox/vbox/dbox
Co-authored-by: ArthurSonzogni <sonzogniarthur@gmail.com>
This fixes: https://github.com/ArthurSonzogni/FTXUI/issues/773
Dragging the mouse with the left button pressed now avoids activating multiple
checkboxes.
Add support for detecting mouse press transition. Added:
```cpp
// The previous mouse event.
Mouse Mouse::previous;
// Return whether the mouse transitionned from:
// released to pressed => IsPressed()
// pressed to pressed => IsHeld()
// pressed to released => IsReleased()
bool Mouse::IsPressed(Button button) const;
bool Mouse::IsHeld(Button button) const;
bool Mouse::IsReleased(Button button) const;
```
A couple of components are now activated when the mouse is pressed,
as opposed to released.
Co-authored-by: ArthurSonzogni <sonzogniarthur@gmail.com>
Into ftxui/component/, add:
```
Container::Stacked(...)
Window(...);
```
Together, they can be used to display draggable/resizable windows.
Bug:https://github.com/ArthurSonzogni/FTXUI/issues/682
* Fix typo.
