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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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9
src/ftxui/component/toggle.cpp
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@@ -12,7 +12,8 @@
#include "ftxui/component/mouse.hpp" // for Mouse, Mouse::Left, Mouse::Pressed
#include "ftxui/dom/elements.hpp" // for operator|, Element, Elements, hbox, reflect, separator, text, 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 {
@@ -68,7 +69,7 @@ class ToggleBase : public ComponentBase {
if (event == Event::TabReverse && size())
*selected_ = (*selected_ + size() - 1) % size();
*selected_ = std::clamp(*selected_, 0, size() - 1);
*selected_ = util::clamp(*selected_, 0, size() - 1);
if (old_selected != *selected_) {
focused_entry() = *selected_;
@@ -108,8 +109,8 @@ class ToggleBase : public ComponentBase {
void Clamp() {
boxes_.resize(size());
*selected_ = std::clamp(*selected_, 0, size() - 1);
focused_entry() = std::clamp(focused_entry(), 0, size() - 1);
*selected_ = util::clamp(*selected_, 0, size() - 1);
focused_entry() = util::clamp(focused_entry(), 0, size() - 1);
}
bool Focusable() const final { return size(); }