Change parameters for event callback.
Add new parameter: placeholder for errors.

Signed-off-by: Slava Zanko <slavazanko@gmail.com>
Move macro-related code to different files

Signed-off-by: Slava Zanko <slavazanko@gmail.com>
Added events for editor

Signed-off-by: Slava Zanko <slavazanko@gmail.com>
Add placeholder for return values from any of event handler.

Signed-off-by: Slava Zanko <slavazanko@gmail.com>
Added events for Treeview

Signed-off-by: Slava Zanko <slavazanko@gmail.com>
Added new keymap implementation

Signed-off-by: Slava Zanko <slavazanko@gmail.com>
Add events for panels in filemanager.

Signed-off-by: Slava Zanko <slavazanko@gmail.com>
Add events for filemanager.

Signed-off-by: Slava Zanko <slavazanko@gmail.com>