cli/bash interface

[alexmyczko]

do you plan to make this usable like iseect? https://packages.debian.org/sid/iselect

[gansm]

FINAL CUT is a widget toolkit for creating applications. It is not a standalone application. But with the FListBox widget you can easily create such an application.

Example: fiselect.cpp

#include <iostream>
#include <string>

#include <final/final.h>

using namespace finalcut;
using StringVector = std::vector<std::string>;

// Lazy conversion insert function
void stringToItem ( FListBoxItem& item
                  , FDataAccess* container
                  , std::size_t index )
{
  StringVector& str_vec = flistboxhelper::getContainer<StringVector>(container);
  auto iter = str_vec.begin();
  std::advance (iter, index);
  item.setText (FString(*iter));
  item.setData (*iter);
}

class SelectWidget final : public FWindow
{
  public:
    explicit SelectWidget (FWidget* parent = nullptr)
      : FWindow{parent}
    {
      init();
    }

    template <typename T>
    void insert (T&& list)
    {
      Listbox.insert(std::forward<T>(list), stringToItem);
    }

    void reserve (std::size_t capacity)
    {
      Listbox.reserve(capacity);
    }

    std::size_t getCurrentItem()
    {
      return Listbox.currentItem();
    }

  private:
    void init()
    {
      setActiveWindow(this);
      //Listbox.setMultiSelection();

      Listbox.addCallback
      (
        "clicked",
        this, &SelectWidget::cb_select
      );

      Listbox.addCallback
      (
        "row-changed",
        this, &SelectWidget::updateStatusbar
      );

      key_q.addCallback
      (
        "activate",
        finalcut::getFApplication(),
        &finalcut::FApplication::cb_exitApp,
        this
      );
    }

    void updateStatusbar()
    {
      FString msg = FString{} << Listbox.currentItem()
                              << L"/"
                              << Listbox.getCount();
      Listbox.setStatusbarMessage (msg);
      Statusbar.setMessage(msg);
      Statusbar.drawMessage();
    }

    void cb_select()          // Line was select with enter
    {
      FApplication::exit(1);  // Set the exit code to 1
      close();                // Close
    }

    void onShow (FShowEvent*) override
    {
      updateStatusbar();
    }

    void adjustSize() override
    {
      auto size = FSize{getDesktopWidth(), getDesktopHeight() - 1};
      setGeometry (FPoint{1, 1}, size, false);
      Listbox.setGeometry (FPoint{1, 1}, size, false);
      FWindow::adjustSize();
    }

    void resetColors() override
    {
      const auto& wc = getColorTheme();
      setForegroundColor (wc->dialog_fg);
      setBackgroundColor (wc->dialog_bg);
      FWidget::resetColors();
    }

    void draw() override
    {
      setColor();
      clearArea();
    }

    FListBox   Listbox{this};
    FStatusBar Statusbar{this};
    FStatusKey key_q{FKey::q, "Quit", &Statusbar};
};


int main (int argc, char* argv[])
{
  auto ret{0};
  std::size_t current_item{0};
  StringVector list{};
  list.reserve(100);

  for (std::string line; std::getline(std::cin, line);)
  {
    list.emplace_back(line);
  }

  // Close stdin filehandle and reconnect it to tty
  close(fileno(stdin));
  open("/dev/tty", O_RDONLY);

  // Save and close the stdin filehandle and reconnect it to tty
  int fd_stdout = dup(1);
  close(fileno(stdout));
  open("/dev/tty", O_RDWR);

  {
    FApplication app{argc, argv};
    SelectWidget select_widget(&app);
    FWidget::setMainWidget(&select_widget);
    select_widget.reserve(list.size());
    select_widget.insert (list);
    select_widget.show();
    ret = app.exec();
    current_item = select_widget.getCurrentItem();
  }

  if ( ret == 1 )
  {
    const auto& item = list[current_item - 1];
    write(fd_stdout, item.c_str(), item.length());
    write(fd_stdout, "\n", 1);
  }
  
  close(fd_stdout);
  return ret;
}

Compile with

g++ fiselect.cpp -o fiselect -O3 -lfinal -std=c++11

Test

grep -v '^#' ~/.bash_history | ./fiselect

or

ls * | ./fiselect | sed -e 's/^/your choice: /'

or

find /proc/ | fiselect