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Clamp selected_ on list resize for Radiobox/Menu/Toggle (#298)

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fix: https://github.com/ArthurSonzogni/FTXUI/issues/296#issue-1092343846

When the list in Radiobox/Menu/Toggle is resized, clamp the |selected_| values so that it stays within bounds.
Clamping is executed in Render() and in OnEvent()

Co-authored-by: ArthurSonzogni <sonzogniarthur@gmail.com>
This commit is contained in:
Andrey Zimin
2022-01-06 21:38:32 +00:00
committed by GitHub
parent 728976bdeb
commit 358f886fab
7 changed files with 192 additions and 62 deletions
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48
src/ftxui/component/menu_test.cpp Normal file
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#include <gtest/gtest-message.h> // for Message
#include <gtest/gtest-test-part.h> // for TestPartResult, SuiteApiResolver, TestFactoryImpl
#include <memory> // for allocator, __shared_ptr_access, shared_ptr
#include <string> // for string, basic_string
#include <vector> // for vector
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/component.hpp" // for Menu
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/component/component_options.hpp" // for MenuOption
#include "ftxui/component/event.hpp" // for Event, Event::ArrowDown, Event::Return
#include "ftxui/util/ref.hpp" // for Ref
#include "gtest/gtest_pred_impl.h" // for Test, EXPECT_EQ, TEST
using namespace ftxui;
TEST(MenuTest, RemoveEntries) {
int focused_entry = 0;
int selected = 0;
std::vector<std::string> entries = {"1", "2", "3"};
MenuOption option;
option.focused_entry = &focused_entry;
auto menu = Menu(&entries, &selected, option);
EXPECT_EQ(selected, 0);
EXPECT_EQ(focused_entry, 0);
menu->OnEvent(Event::ArrowDown);
menu->OnEvent(Event::ArrowDown);
menu->OnEvent(Event::Return);
EXPECT_EQ(selected, 2);
EXPECT_EQ(focused_entry, 2);
entries.resize(2);
EXPECT_EQ(selected, 2);
EXPECT_EQ(focused_entry, 2);
(void)menu->Render();
EXPECT_EQ(selected, 1);
EXPECT_EQ(focused_entry, 1);
}
// Copyright 2022 Arthur Sonzogni. All rights reserved.
// Use of this source code is governed by the MIT license that can be found in
// the LICENSE file.