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Fix Clamp crash when entries_ size is zero (#306)

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Run ftxui_example_homescreen on Windows, then select compiler tab, crash on origin code.

Co-authored-by: chenpeizhe <peizhe.chen@horizon.ai>
This commit is contained in:
pezy
2022-01-13 08:46:09 +08:00
committed by GitHub
parent 3dc215e6c0
commit feb24b9498
6 changed files with 40 additions and 21 deletions
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13
src/ftxui/component/radiobox.cpp
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@@ -14,7 +14,8 @@
#include "ftxui/component/screen_interactive.hpp" // for Component
#include "ftxui/dom/elements.hpp" // for operator|, reflect, text, Element, hbox, vbox, Elements, focus, nothing, select
#include "ftxui/screen/box.hpp" // for Box
#include "ftxui/util/ref.hpp" // for Ref, ConstStringListRef
#include "ftxui/screen/util.hpp"
#include "ftxui/util/ref.hpp" // for Ref, ConstStringListRef
namespace ftxui {
@@ -91,7 +92,7 @@ class RadioboxBase : public ComponentBase {
if (event == Event::TabReverse && size())
hovered_ = (hovered_ + size() - 1) % size();
hovered_ = std::clamp(hovered_, 0, size() - 1);
hovered_ = util::clamp(hovered_, 0, size() - 1);
if (hovered_ != old_hovered) {
focused_entry() = hovered_;
@@ -145,7 +146,7 @@ class RadioboxBase : public ComponentBase {
if (event.mouse().button == Mouse::WheelDown)
(hovered_)++;
hovered_ = std::clamp(hovered_, 0, size() - 1);
hovered_ = util::clamp(hovered_, 0, size() - 1);
if (hovered_ != old_hovered)
option_->on_change();
@@ -155,9 +156,9 @@ class RadioboxBase : public ComponentBase {
void Clamp() {
boxes_.resize(size());
*selected_ = std::clamp(*selected_, 0, size() - 1);
focused_entry() = std::clamp(focused_entry(), 0, size() - 1);
hovered_ = std::clamp(hovered_, 0, size() - 1);
*selected_ = util::clamp(*selected_, 0, size() - 1);
focused_entry() = util::clamp(focused_entry(), 0, size() - 1);
hovered_ = util::clamp(hovered_, 0, size() - 1);
}
bool Focusable() const final { return entries_.size(); }