mirror of
https://github.com/dankamongmen/notcurses.git
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b5d8549bb3
This is to make it possible, in the future, to create multiple instances
of `NotCurses` for multiple terminals. The first instance of
`NotCurses` becomes the default one, so that any instances of other
classes that aren't explicitly created with a pointer to another
`NotCurses` instance still work as expected.
Note that currently trying to call `notcurses_init` twice results in the
following error for me:
0x55555559bfc0 is already registered for signals
Couldn't drop signals: 0x55555559bfc0 != 0x5555555b6720
terminate called after throwing an instance of 'ncpp::init_error*'
Program received signal SIGABRT, Aborted.
The error is signalled by `setup_signals` and the pointer shown in the
message points to the first `struct notcurses` instance created.
80 lines
1.5 KiB
C++
80 lines
1.5 KiB
C++
#ifndef __NCPP_MENU_HH
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#define __NCPP_MENU_HH
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#include <notcurses/notcurses.h>
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#include "Root.hh"
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namespace ncpp
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{
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class NotCurses;
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class Plane;
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class NCPP_API_EXPORT Menu : public Root
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{
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public:
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static ncmenu_options default_options;
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public:
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explicit Menu (const ncmenu_options *opts = nullptr, NotCurses *ncinst = nullptr)
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: Root (ncinst)
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{
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menu = ncmenu_create (notcurses_stdplane (get_notcurses ()), opts == nullptr ? &default_options : opts);
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if (menu == nullptr)
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throw init_error ("Notcurses failed to create a new menu");
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}
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~Menu ()
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{
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if (!is_notcurses_stopped ())
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ncmenu_destroy (menu);
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}
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bool unroll (int sectionidx) const NOEXCEPT_MAYBE
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{
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return error_guard (ncmenu_unroll (menu, sectionidx), -1);
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}
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bool rollup () const NOEXCEPT_MAYBE
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{
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return error_guard (ncmenu_rollup (menu), -1);
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}
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bool nextsection () const NOEXCEPT_MAYBE
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{
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return error_guard (ncmenu_nextsection (menu), -1);
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}
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bool prevsection () const NOEXCEPT_MAYBE
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{
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return error_guard (ncmenu_prevsection (menu), -1);
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}
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bool nextitem () const NOEXCEPT_MAYBE
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{
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return error_guard (ncmenu_nextitem (menu), -1);
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}
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bool previtem () const NOEXCEPT_MAYBE
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{
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return error_guard (ncmenu_previtem (menu), -1);
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}
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const char* get_selected (ncinput *ni = nullptr) const noexcept
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{
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return ncmenu_selected (menu, ni);
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}
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bool offer_input (const struct ncinput* ni) const noexcept
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{
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return ncmenu_offer_input (menu, ni);
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}
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Plane* get_plane () const noexcept;
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private:
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ncmenu *menu;
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};
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}
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#endif
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