mirror of
https://github.com/dankamongmen/notcurses
synced 2025-03-24 08:29:02 -04:00
9ca8d9c9c6
Fixes: https://github.com/dankamongmen/notcurses/issues/616 SIGSEGV was caused by an invalid cast. Short explanation: PEBKAC Long explanation: `Selector.hh`, `Plot.hh` and `MultiSelector.hh` did not include `Plane.hh`, they merely declared `class Plane;` because inclusion of `Plane.hh` would cause circular dependencies to appear and the compiler would be unhappy. On top of that, yours truly wrenched the compiler's hands and caused it to believe that a pointer to `Plane` is really a pointer to `ncplane*` which was quite a silly thing to do as the compiler, not having included `Plane.hh` and thus not knowing full definition of the type, wasn't able to look up the type cast operator in `Plane`. Don't abuse `reinterpret_cast`, kids!
87 lines
2.1 KiB
C++
87 lines
2.1 KiB
C++
#ifndef __NCPP_SELECTOR_HH
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#define __NCPP_SELECTOR_HH
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#include <notcurses/notcurses.h>
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#include "Root.hh"
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#include "NCAlign.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 Selector : public Root
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{
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public:
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static ncselector_options default_options;
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public:
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explicit Selector (Plane *plane, int y, int x, const ncselector_options *opts = nullptr)
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: Selector (Utilities::to_ncplane (plane), y, x, opts)
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{}
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explicit Selector (Plane const* plane, int y, int x, const ncselector_options *opts = nullptr)
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: Selector (const_cast<Plane*>(plane), y, x, opts)
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{}
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explicit Selector (Plane &plane, int y, int x, const ncselector_options *opts = nullptr)
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: Selector (plane.to_ncplane (), y, x, opts)
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{}
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explicit Selector (Plane const& plane, int y, int x, const ncselector_options *opts = nullptr)
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: Selector (const_cast<Plane*>(&plane), y, x, opts)
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{}
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explicit Selector (ncplane *plane, int y, int x, const ncselector_options *opts = nullptr)
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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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selector = ncselector_create (plane, y, x, opts == nullptr ? &default_options : opts);
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if (selector == nullptr)
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throw init_error ("Notcurses failed to create a new selector");
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}
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~Selector ()
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{
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if (!is_notcurses_stopped ())
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ncselector_destroy (selector, nullptr);
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}
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int additem (const ncselector_item *item) const NOEXCEPT_MAYBE
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{
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return error_guard<int> (ncselector_additem (selector, item), -1);
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}
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int delitem (const char *item) const NOEXCEPT_MAYBE
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{
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return error_guard<int> (ncselector_delitem (selector, item), -1);
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}
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const char* previtem () const noexcept
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{
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return ncselector_previtem (selector);
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}
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const char* nextitem () const noexcept
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{
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return ncselector_nextitem (selector);
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}
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const char* get_selected () const noexcept
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{
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return ncselector_selected (selector);
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}
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bool offer_input (const struct ncinput* nc) const noexcept
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{
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return ncselector_offer_input (selector, nc);
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}
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Plane* get_plane () const noexcept;
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private:
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ncselector *selector;
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};
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}
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#endif
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