Add Lesson 5 Task 1

Lesson_5/Task_1/.gitignore

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+# This file is used to ignore files which are generated
+# ----------------------------------------------------------------------------
+
+*~
+*.autosave
+*.a
+*.core
+*.moc
+*.o
+*.obj
+*.orig
+*.rej
+*.so
+*.so.*
+*_pch.h.cpp
+*_resource.rc
+*.qm
+.#*
+*.*#
+core
+!core/
+tags
+.DS_Store
+.directory
+*.debug
+Makefile*
+*.prl
+*.app
+moc_*.cpp
+ui_*.h
+qrc_*.cpp
+Thumbs.db
+*.res
+*.rc
+/.qmake.cache
+/.qmake.stash
+
+# qtcreator generated files
+*.pro.user*
+CMakeLists.txt.user*
+
+# xemacs temporary files
+*.flc
+
+# Vim temporary files
+.*.swp
+
+# Visual Studio generated files
+*.ib_pdb_index
+*.idb
+*.ilk
+*.pdb
+*.sln
+*.suo
+*.vcproj
+*vcproj.*.*.user
+*.ncb
+*.sdf
+*.opensdf
+*.vcxproj
+*vcxproj.*
+
+# MinGW generated files
+*.Debug
+*.Release
+
+# Python byte code
+*.pyc
+
+# Binaries
+# --------
+*.dll
+*.exe
+

Lesson_5/Task_1/Task_1.pro

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+QT       += core gui
+
+greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
+
+CONFIG += c++17
+
+# You can make your code fail to compile if it uses deprecated APIs.
+# In order to do so, uncomment the following line.
+#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
+
+SOURCES += \
+    automobile.cpp \
+    childautomobile.cpp \
+    main.cpp \
+    autoservice.cpp
+
+HEADERS += \
+    automobile.h \
+    autoservice.h \
+    childautomobile.h
+
+FORMS += \
+    autoservice.ui
+
+# Default rules for deployment.
+qnx: target.path = /tmp/$${TARGET}/bin
+else: unix:!android: target.path = /opt/$${TARGET}/bin
+!isEmpty(target.path): INSTALLS += target

Lesson_5/Task_1/automobile.cpp

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+#include "automobile.h"
+
+Automobile::Automobile(QObject *parent)
+    : QObject{parent}
+{}

Lesson_5/Task_1/automobile.h

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+#ifndef AUTOMOBILE_H
+#define AUTOMOBILE_H
+
+#include <QObject>
+
+class Automobile : public QObject
+{
+    Q_OBJECT
+public:
+    explicit Automobile(QObject *parent = nullptr);
+    QString getManufacturer() { return m_manufacturer; }
+    void setManufacturer(QString manufacturer) { m_manufacturer = manufacturer; }
+    float getPrice() { return m_price; }
+    void setPrice(int price) { m_price = price; }
+    QString getType() { return m_type; }
+    void setType(QString type) { m_type = type; }
+
+signals:
+
+protected:
+    float m_price;
+    QString m_type;
+private:
+    QString m_manufacturer;
+};
+
+#endif // AUTOMOBILE_H

Lesson_5/Task_1/autoservice.cpp

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+#include "autoservice.h"
+#include "ui_autoservice.h"
+#include <QDebug>
+
+AutoService::AutoService(QWidget *parent)
+    : QMainWindow(parent)
+    , ui(new Ui::AutoService)
+{
+    ui->setupUi(this);
+    connect(ui->b_filter, &QPushButton::clicked, this, &AutoService::filter);
+    connect(ui->l_automobiles, &QListWidget::itemClicked, this, &AutoService::select);
+
+    ChildAutomobile* automobile1 = new ChildAutomobile();
+    ChildAutomobile* automobile2 = new ChildAutomobile();
+    ChildAutomobile* automobile3 = new ChildAutomobile();
+
+    automobile1->setManufacturer("Rolls-Royce");
+    automobile1->setModel((QString)"Wraith");
+    automobile1->setType("Coupé");
+    automobile1->setPrice(343350);
+    automobile1->setSeats(4);
+    automobile1->setColor(QColor(19, 25, 98));
+
+    automobile2->setManufacturer("Hyundai");
+    automobile2->setModel((QString)"Santa Cruz");
+    automobile2->setType("Pickup truck");
+    automobile2->setPrice(26900);
+    automobile2->setSeats(5);
+    automobile2->setColor(QColor(143, 144, 139));
+
+    automobile3->setManufacturer("JAC");
+    automobile3->setModel((QString)"Shuailing T6");
+    automobile3->setType("Pickup truck");
+    automobile3->setPrice(13778);
+    automobile3->setSeats(5);
+    automobile3->setColor(QColor(221, 225, 228));
+
+    m_automobiles.append(automobile1);
+    m_automobiles.append(automobile2);
+    m_automobiles.append(automobile3);
+}
+
+AutoService::~AutoService()
+{
+    delete ui;
+}
+
+void AutoService::filter()
+{
+    ui->l_automobiles->clear();
+    ui->e_selected->clear();
+    for (int automobile = 0; automobile < m_automobiles.size(); ++automobile) {
+        if (
+            ((ui->e_manufacturer->text().isEmpty()) || m_automobiles[automobile]->getManufacturer() == ui->e_manufacturer->text())
+            && ((ui->e_type->text().isEmpty()) || (m_automobiles[automobile]->getType() == ui->e_type->text()))
+            && ((ui->e_price->text().isEmpty()) || (m_automobiles[automobile]->getPrice() >= ui->e_price->text().toInt()))
+            )
+                addAutomobile(m_automobiles[automobile]);
+
+    }
+}
+
+void AutoService::addAutomobile(ChildAutomobile * automobile)
+{
+    ui->l_automobiles->addItem(automobile->getManufacturer() + " " + automobile->getModel());
+}
+
+void AutoService::select(QListWidgetItem * item)
+{
+    for (int automobile = 0; automobile < m_automobiles.size(); ++automobile) {
+        if (item->text() == (m_automobiles[automobile]->getManufacturer() + " " + m_automobiles[automobile]->getModel())) {
+            ui->e_selected->setText("Manufacturer: " + m_automobiles[automobile]->getManufacturer() + "\n"
+                                    + "Model: " + m_automobiles[automobile]->getModel() + "\n"
+                                    + "Type: " + m_automobiles[automobile]->getType() + "\n"
+                                    + "Seats: " + QString::number(m_automobiles[automobile]->getSeats()) + "\n"
+                                    + "Color: " + m_automobiles[automobile]->getColor().name() + "\n"
+                                    + "Price: " + QString::number(m_automobiles[automobile]->getPrice()));
+            break;
+        }
+    }
+}

Lesson_5/Task_1/autoservice.h

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+#ifndef AUTOSERVICE_H
+#define AUTOSERVICE_H
+
+#include <QMainWindow>
+#include "childautomobile.h"
+#include <QListWidget>
+
+QT_BEGIN_NAMESPACE
+namespace Ui {
+class AutoService;
+}
+QT_END_NAMESPACE
+
+class AutoService : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    AutoService(QWidget *parent = nullptr);
+    ~AutoService();
+
+private slots:
+    void filter();
+
+private:
+    Ui::AutoService *ui;
+    QVector<ChildAutomobile *> m_automobiles;
+    void addAutomobile(ChildAutomobile*);
+    void select(QListWidgetItem *);
+};
+#endif // AUTOSERVICE_H

Lesson_5/Task_1/autoservice.ui

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+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>AutoService</class>
+ <widget class="QMainWindow" name="AutoService">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>800</width>
+    <height>600</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>AutoService</string>
+  </property>
+  <widget class="QWidget" name="centralwidget">
+   <layout class="QVBoxLayout" name="verticalLayout_4">
+    <item>
+     <widget class="QLabel" name="label_2">
+      <property name="text">
+       <string>Filter:</string>
+      </property>
+     </widget>
+    </item>
+    <item>
+     <layout class="QHBoxLayout" name="horizontalLayout_4">
+      <item>
+       <layout class="QVBoxLayout" name="verticalLayout">
+        <item>
+         <layout class="QHBoxLayout" name="horizontalLayout">
+          <property name="spacing">
+           <number>19</number>
+          </property>
+          <item>
+           <widget class="QLabel" name="label_3">
+            <property name="text">
+             <string>Manufacturer</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QLineEdit" name="e_manufacturer">
+            <property name="clearButtonEnabled">
+             <bool>false</bool>
+            </property>
+           </widget>
+          </item>
+         </layout>
+        </item>
+        <item>
+         <layout class="QHBoxLayout" name="horizontalLayout_2">
+          <property name="spacing">
+           <number>76</number>
+          </property>
+          <item>
+           <widget class="QLabel" name="label_4">
+            <property name="text">
+             <string>Type</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QLineEdit" name="e_type"/>
+          </item>
+         </layout>
+        </item>
+        <item>
+         <layout class="QHBoxLayout" name="horizontalLayout_3">
+          <property name="spacing">
+           <number>43</number>
+          </property>
+          <item>
+           <widget class="QLabel" name="label_5">
+            <property name="text">
+             <string>Max price</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QLineEdit" name="e_price"/>
+          </item>
+         </layout>
+        </item>
+       </layout>
+      </item>
+      <item>
+       <widget class="QPushButton" name="b_filter">
+        <property name="text">
+         <string>Filter</string>
+        </property>
+       </widget>
+      </item>
+     </layout>
+    </item>
+    <item>
+     <layout class="QVBoxLayout" name="verticalLayout_2">
+      <item>
+       <widget class="QLabel" name="label">
+        <property name="text">
+         <string>Automobile list:</string>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="QListWidget" name="l_automobiles"/>
+      </item>
+     </layout>
+    </item>
+    <item>
+     <layout class="QVBoxLayout" name="verticalLayout_3">
+      <item>
+       <widget class="QLabel" name="label_6">
+        <property name="text">
+         <string>Selected automobile:</string>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="QTextEdit" name="e_selected">
+        <property name="readOnly">
+         <bool>true</bool>
+        </property>
+       </widget>
+      </item>
+     </layout>
+    </item>
+   </layout>
+  </widget>
+  <widget class="QMenuBar" name="menubar">
+   <property name="geometry">
+    <rect>
+     <x>0</x>
+     <y>0</y>
+     <width>800</width>
+     <height>25</height>
+    </rect>
+   </property>
+  </widget>
+  <widget class="QStatusBar" name="statusbar"/>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

Lesson_5/Task_1/childautomobile.cpp

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+#include "childautomobile.h"
+
+ChildAutomobile::ChildAutomobile(QObject *parent)
+    : Automobile{parent}
+{}

Lesson_5/Task_1/childautomobile.h

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+#ifndef CHILDAUTOMOBILE_H
+#define CHILDAUTOMOBILE_H
+
+#include <QObject>
+#include <QColor>
+#include <automobile.h>
+
+class ChildAutomobile : public Automobile
+{
+    Q_OBJECT
+public:
+    explicit ChildAutomobile(QObject *parent = nullptr);
+    QString getModel() { return m_model; }
+    void setModel(QString model) { m_model = model; }
+    int getSeats() { return m_seats; }
+    void setSeats(int seats) { m_seats = seats; }
+    QColor getColor() { return m_color; }
+    void setColor(QColor color) { m_color = color; }
+
+    void setModel(const char *);
+signals:
+
+private:
+    QString m_model;
+    int m_seats;
+    QColor m_color;
+};
+
+#endif // CHILDAUTOMOBILE_H

Lesson_5/Task_1/main.cpp

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+#include "autoservice.h"
+
+#include <QApplication>
+
+int main(int argc, char *argv[])
+{
+    QApplication a(argc, argv);
+    AutoService w;
+    w.show();
+    return a.exec();
+}