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.
72 lines
2.0 KiB
C++
72 lines
2.0 KiB
C++
#ifndef __NCPP_MULTI_SELECTOR_HH
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#define __NCPP_MULTI_SELECTOR_HH
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#include <notcurses/notcurses.h>
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#include "NCAlign.hh"
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#include "Plane.hh"
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#include "Utilities.hh"
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namespace ncpp
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{
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class NCPP_API_EXPORT MultiSelector : public Root
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{
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public:
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static ncmultiselector_options default_options;
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public:
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explicit MultiSelector (Plane *plane, int y, int x, const ncmultiselector_options *opts = nullptr)
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: MultiSelector (static_cast<const Plane*>(plane), y, x, opts)
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{}
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explicit MultiSelector (Plane const* plane, int y, int x, const ncmultiselector_options *opts = nullptr)
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: Root (Utilities::get_notcurses_cpp (plane))
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{
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common_init (Utilities::to_ncplane (plane), y, x, opts);
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}
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explicit MultiSelector (Plane &plane, int y, int x, const ncmultiselector_options *opts = nullptr)
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: MultiSelector (static_cast<Plane const&>(plane), y, x, opts)
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{}
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explicit MultiSelector (Plane const& plane, int y, int x, const ncmultiselector_options *opts = nullptr)
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: Root (Utilities::get_notcurses_cpp (plane))
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{
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common_init (Utilities::to_ncplane (plane), y, x, opts);
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}
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~MultiSelector ()
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{
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if (!is_notcurses_stopped ())
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ncmultiselector_destroy (multiselector, nullptr);
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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 ncmultiselector_offer_input (multiselector, ni);
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}
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int get_selected (bool *selected, unsigned count) const NOEXCEPT_MAYBE
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{
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return error_guard<int> (ncmultiselector_selected (multiselector, selected, count), -1);
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}
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Plane* get_plane () const noexcept;
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private:
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void common_init (ncplane *plane, int y, int x, const ncmultiselector_options *opts)
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{
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if (plane == nullptr)
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throw invalid_argument ("'plane' must be a valid pointer");
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multiselector = ncmultiselector_create (plane, y, x, opts == nullptr ? &default_options : opts);
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if (multiselector == nullptr)
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throw init_error ("Notcurses failed to create a new multiselector");
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}
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private:
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ncmultiselector *multiselector;
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};
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}
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#endif
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