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Add non focusable components. (#172)

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This commit is contained in:
Arthur Sonzogni
2021-08-05 22:40:40 +02:00
committed by GitHub
parent 49e8cc57d3
commit 26e26fd41a
11 changed files with 99 additions and 23 deletions
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35
src/ftxui/component/container.cpp
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@@ -63,6 +63,25 @@ class ContainerBase : public ComponentBase {
int selected_ = 0;
int* selector_ = nullptr;
void MoveSelector(int dir) {
for (int i = *selector_ + dir; i >= 0 && i < (int)children_.size();
i += dir) {
if (children_[i]->Focusable()) {
*selector_ = i;
return;
}
}
}
void MoveSelectorWrap(int dir) {
for (size_t offset = 1; offset < children_.size(); ++offset) {
int i = (*selector_ + offset * dir + children_.size()) % children_.size();
if (children_[i]->Focusable()) {
*selector_ = i;
return;
}
}
}
};
class VerticalContainer : public ContainerBase {
@@ -81,13 +100,13 @@ class VerticalContainer : public ContainerBase {
bool EventHandler(Event event) override {
int old_selected = *selector_;
if (event == Event::ArrowUp || event == Event::Character('k'))
(*selector_)--;
MoveSelector(-1);
if (event == Event::ArrowDown || event == Event::Character('j'))
(*selector_)++;
MoveSelector(+1);
if (event == Event::Tab && children_.size())
*selector_ = (*selector_ + 1) % children_.size();
MoveSelectorWrap(+1);
if (event == Event::TabReverse && children_.size())
*selector_ = (*selector_ + children_.size() - 1) % children_.size();
MoveSelectorWrap(-1);
*selector_ = std::max(0, std::min(int(children_.size()) - 1, *selector_));
return old_selected != *selector_;
@@ -110,13 +129,13 @@ class HorizontalContainer : public ContainerBase {
bool EventHandler(Event event) override {
int old_selected = *selector_;
if (event == Event::ArrowLeft || event == Event::Character('h'))
(*selector_)--;
MoveSelector(-1);
if (event == Event::ArrowRight || event == Event::Character('l'))
(*selector_)++;
MoveSelector(+1);
if (event == Event::Tab && children_.size())
*selector_ = (*selector_ + 1) % children_.size();
MoveSelectorWrap(+1);
if (event == Event::TabReverse && children_.size())
*selector_ = (*selector_ + children_.size() - 1) % children_.size();
MoveSelectorWrap(-1);
*selector_ = std::max(0, std::min(int(children_.size()) - 1, *selector_));
return old_selected != *selector_;