router.h

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/*
  * Copyright 2020 Twilight
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
*/
#pragma once
#include <QObject>
#include <QString>
#include <QUrl>
#include <QHash>
#include <QVector>

// An individual screen
struct Screen : public QObject {
  Q_OBJECT
 
  Q_PROPERTY(bool modal MEMBER modal NOTIFY modalChanged)       
  Q_PROPERTY(QString title MEMBER title NOTIFY titleChanged)    
  Q_PROPERTY(QString url MEMBER url NOTIFY urlChanged)          
  Q_PROPERTY(bool homeBtn MEMBER homeBtn NOTIFY homeBtnChanged) 
 
signals:
  void modalChanged();
  void titleChanged();
  void urlChanged();
  void homeBtnChanged();
 
public:
  Screen(); 
  Screen(bool modal, QString title, QString url, bool homeBtn = true); 
 
  // Open this screen as a modal, taking up the entire window
  bool modal = false; 
 
  // Name of this screen
  QString title = ""; 
 
  // URL of the screen to the QML file
  QString url = ""; 
 
  bool homeBtn = true; 
};

// Router for screens
class Router : public QObject
{
  Q_OBJECT
 
  Q_PROPERTY(QString title MEMBER title NOTIFY titleChanged)                    
  Q_PROPERTY(bool homeBtnShown MEMBER homeBtnShown NOTIFY homeBtnShownChanged)  
 
signals:
  void goHome();                 
  void openModal(QString url);   
  void openNonModal(QString url); 
  void closeModal();             
  void closeNonModal();          
 
  void titleChanged();
  void homeBtnShownChanged();
 
public:
  Q_INVOKABLE void changeScreen(QString name); 
  Q_INVOKABLE void closeScreen();              
 
  // For internal use only by StackView
  // Silently adds a screen onto the stack
  Q_INVOKABLE void manualStackPush(QString name); 
 
  QString title = "";       
  bool homeBtnShown = true; 
 
  static void loadScreens(); 
 
  static QVector<Screen*> stack;          
  static QHash<QString, Screen*> screens; 
};