Popup.C

Go to the documentation of this file.

// This may look like C code, but it's really -*- C++ -*-
/*
 * Copyright (C) 2008 Emweb bv, Herent, Belgium.
 *
 * See the LICENSE file for terms of use.
 */
 
#include <Wt/WAny.h>
 
#include "Popup.h"
 
using namespace Wt;
 
Popup::Popup(Type t, const WString& message, std::string defaultValue)
  : WObject(),
    okPressed_(this, "ok"),
    cancelPressed_(this, "cancel"),
    t_(t),
    message_(message),
    defaultValue_(defaultValue)
{
  setJavaScript();
}
 
void Popup::setJavaScript()
{
  /*
   * Sets the JavaScript code.
   *
   * Notice how Wt.emit() is used to emit the okPressed or cancelPressed
   * signal, and how arguments may be passed to it, matching the number and
   * type of arguments in the JSignal definition.
   */
  switch (t_) {
  case Confirm:
    show.setJavaScript
      ("function(){ if (confirm('" + message_.narrow() + "')) {"
       + okPressed_.createCall({"''"}) +
       "} else {"
       + cancelPressed_.createCall({}) +
       "}}");
    break;
  case Alert:
    show.setJavaScript
      ("function(){ alert('" + message_.narrow() + "');"
       + okPressed_.createCall({"''"}) +
       "}");
    break;
  case Prompt:
    show.setJavaScript
      ("function(){var n = prompt('" + message_.narrow() + "', '"
       + defaultValue_ + "');"
       "if (n != null) {"
       + okPressed_.createCall({"n"}) +
       "} else {"
       + cancelPressed_.createCall({}) +
       "}}");
  }
}
 
void Popup::setMessage(const WString& message)
{
  message_ = message;
  setJavaScript();
}
 
void Popup::setDefaultValue(const std::string defaultValue)
{
  defaultValue_ = defaultValue;
  setJavaScript();
}
 
std::unique_ptr<Popup> Popup::createConfirm(const WString& message)
{
  return std::make_unique<Popup>(Type::Confirm, message, std::string());
}
 
std::unique_ptr<Popup> Popup::createAlert(const WString& message)
{
  return std::make_unique<Popup>(Type::Alert, message, std::string());
}
 
std::unique_ptr<Popup> Popup::createPrompt(const WString& message,
                           const std::string defaultValue)
{
  return std::make_unique<Popup>(Type::Prompt, message, defaultValue);
}