FormExample.C

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/*
 * Copyright (C) 2008 Emweb bv, Herent, Belgium.
 *
 * See the LICENSE file for terms of use.
 */
 
#include "FormExample.h"
#include "Form.h"
 
#include <Wt/WApplication.h>
#include <Wt/WText.h>
#include <Wt/WStringUtil.h>
 
FormExample::FormExample()
    : WContainerWidget()
{
  WContainerWidget *langLayout = this->addWidget(std::make_unique<WContainerWidget>());
  langLayout->setContentAlignment(AlignmentFlag::Right);
  langLayout->addWidget(std::make_unique<WText>(tr("language")));
 
  const char *lang[] = { "en", "nl" };
 
  for (int i = 0; i < 2; ++i) {
    WText *t = langLayout->addWidget(std::make_unique<WText>(lang[i]));
    t->setMargin(5);
    t->clicked().connect(std::bind(&FormExample::changeLanguage, this, t));
 
    languageSelects_.push_back(t);
  }
 
  /*
   * Start with the reported locale, if available
   */
  setLanguage(wApp->locale().name());
 
  Form *form = this->addWidget(std::make_unique<Form>());
  form->setMargin(20);
}
 
void FormExample::setLanguage(const std::string lang)
{
  bool haveLang = false;
 
  for (auto i : languageSelects_) {
    WText *t = i;
 
    // prefix match, e.g. en matches en-us.
    bool isLang = lang.find(t->text().toUTF8()) == 0;
    t->setStyleClass(isLang ? "langcurrent" : "lang");
 
    haveLang = haveLang || isLang;
  }
 
  if (!haveLang) {
    languageSelects_[0]->setStyleClass("langcurrent");
    WApplication::instance()
      ->setLocale(languageSelects_[0]->text().toUTF8());
  } else
    WApplication::instance()->setLocale(lang);
}
 
void FormExample::changeLanguage(WText *t)
{
  setLanguage(t->text().toUTF8());
}
 
std::unique_ptr<WApplication> createApplication(const WEnvironment& env)
{
  std::unique_ptr<WApplication> app
      = std::make_unique<WApplication>(env);
  app->messageResourceBundle().use(WApplication::appRoot() + "form-example");
  app->setTitle("Form example");
 
  app->root()->addWidget(std::make_unique<FormExample>());
 
  WCssDecorationStyle langStyle;
  langStyle.font().setSize(FontSize::Smaller);
  langStyle.setCursor(Cursor::PointingHand);
  langStyle.setForegroundColor(WColor("blue"));
  langStyle.setTextDecoration(TextDecoration::Underline);
  app->styleSheet().addRule(".lang", langStyle);
 
  langStyle.setCursor(Cursor::Arrow);
  langStyle.font().setWeight(FontWeight::Bold);
  app->styleSheet().addRule(".langcurrent", langStyle);
 
  return app;
}
 
int main(int argc, char **argv)
{
   return WRun(argc, argv, &createApplication);
}