Add Lesson 5 Task 2

Lesson_5/Task_2/.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_2/Task_2.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 += \
+    main.cpp \
+    cardindex.cpp \
+    record.cpp
+
+HEADERS += \
+    cardindex.h \
+    record.h
+
+FORMS += \
+    cardindex.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_2/cardindex.cpp

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+#include "cardindex.h"
+#include "ui_cardindex.h"
+
+CardIndex::CardIndex(QWidget *parent)
+    : QMainWindow(parent)
+    , ui(new Ui::CardIndex)
+{
+    ui->setupUi(this);
+    connect(ui->b_add, &QPushButton::clicked, this, &CardIndex::add);
+    connect(ui->b_edit, &QPushButton::clicked, this, &CardIndex::edit);
+    connect(ui->b_remove, &QPushButton::clicked, this, &CardIndex::remove);
+    connect(ui->b_filter, &QPushButton::clicked, this, &CardIndex::filter);
+    connect(ui->l_records, &QListWidget::itemClicked, this, &CardIndex::select);
+}
+
+CardIndex::~CardIndex()
+{
+    delete ui;
+}
+
+void CardIndex::filter()
+{
+
+    ui->l_records->clear();
+    ui->e_selected->clear();
+    bool typeEmpty = ui->e_type->text().isEmpty();
+    bool titleEmpty = ui->e_title->text().isEmpty();
+    bool authorEmpty = ui->e_author->text().isEmpty();
+    bool libraryEmpty = ui->e_library->text().isEmpty();
+    bool dateEmpty = !ui->cb_sortByDate->isChecked();
+    for (int record = 0; record < m_records.size(); ++record) {
+        bool typeMatch = m_records[record]->getType().contains(ui->e_type->text());
+        bool titleMatch = m_records[record]->getTitle().contains(ui->e_title->text());
+        bool authorMatch = m_records[record]->getAuthor().contains(ui->e_author->text());
+        bool libraryMatch = m_records[record]->getLibrary().contains(ui->e_library->text());
+        bool dateMatch = m_records[record]->getDate() == ui->e_date->date();
+        if (
+            (typeEmpty || typeMatch)
+            && (titleEmpty || titleMatch)
+            && (authorEmpty || authorMatch)
+            && (libraryEmpty || libraryMatch)
+            && (dateEmpty || dateMatch)
+            )
+            ui->l_records->addItem(m_records[record]->getTitle());
+
+    }
+}
+
+void CardIndex::add()
+{
+    if (findRecordByTitle(ui->e_title->text()) != NULL)
+        return;
+    Record* record = new Record();
+    setRecordData(record);
+    m_records.append(record);
+    reloadRecords();
+}
+
+void CardIndex::edit()
+{
+    QListWidgetItem* item = ui->l_records->currentItem();
+    if (item == NULL)
+        return;
+    Record* record = findRecordByTitle(item->text());
+    setRecordData(record);
+    reloadRecords();
+}
+
+void CardIndex::remove()
+{
+    QListWidgetItem* item = ui->l_records->currentItem();
+    if (item == NULL)
+        return;
+    for (int record = 0; record < m_records.size(); ++record)
+        if (item->text() == m_records[record]->getTitle()) {
+            delete m_records[record];
+            m_records.removeAt(record);
+        }
+    reloadRecords();
+
+}
+
+void CardIndex::select(QListWidgetItem * item)
+{
+    for (int record = 0; record < m_records.size(); ++record) {
+        Record* currentRecord = m_records[record];
+        if (item->text() == currentRecord->getTitle()) {
+            ui->e_selected->setText("Type: " + currentRecord->getType() + "\n"
+                                    + "Title: " + currentRecord->getTitle() + "\n"
+                                    + "Author: " + currentRecord->getAuthor() + "\n"
+                                    + "Library: " + currentRecord->getLibrary() + "\n"
+                                    + "Date: " + currentRecord->getDate().toString());
+            break;
+        }
+    }
+}
+
+Record *CardIndex::findRecordByTitle(QString title)
+{
+    for (int record = 0; record < m_records.size(); ++record)
+        if (title == m_records[record]->getTitle())
+            return m_records[record];
+    return nullptr;
+}
+
+void CardIndex::reloadRecords()
+{
+    ui->l_records->clear();
+    for (int record = 0; record < m_records.size(); ++record)
+        ui->l_records->addItem(m_records[record]->getTitle());
+}
+
+void CardIndex::setRecordData(Record* record)
+{
+    record->setType(ui->e_type->text());
+    record->setTitle(ui->e_title->text());
+    record->setAuthor(ui->e_author->text());
+    record->setLibrary(ui->e_library->text());
+    record->setDate(ui->e_date->date());
+}

Lesson_5/Task_2/cardindex.h

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+#ifndef CARDINDEX_H
+#define CARDINDEX_H
+
+#include <QMainWindow>
+#include <QListWidget>
+#include <record.h>
+
+QT_BEGIN_NAMESPACE
+namespace Ui {
+class CardIndex;
+}
+QT_END_NAMESPACE
+
+class CardIndex : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    CardIndex(QWidget *parent = nullptr);
+    ~CardIndex();
+
+private slots:
+    void filter();
+    void add();
+    void edit();
+    void remove();
+    void select(QListWidgetItem *);
+
+
+private:
+    Ui::CardIndex *ui;
+    QVector<Record *> m_records;
+
+    Record *findRecordByTitle(QString title);
+    void reloadRecords();
+    void setRecordData(Record *);
+};
+#endif // CARDINDEX_H

Lesson_5/Task_2/cardindex.ui

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+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>CardIndex</class>
+ <widget class="QMainWindow" name="CardIndex">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>800</width>
+    <height>600</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>CardIndex</string>
+  </property>
+  <widget class="QWidget" name="centralwidget">
+   <layout class="QHBoxLayout" name="horizontalLayout_2">
+    <item>
+     <layout class="QVBoxLayout" name="verticalLayout">
+      <item>
+       <widget class="QLabel" name="label_4">
+        <property name="text">
+         <string>Type</string>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="QLineEdit" name="e_type"/>
+      </item>
+      <item>
+       <widget class="QLabel" name="label_5">
+        <property name="text">
+         <string>Title</string>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="QLineEdit" name="e_title"/>
+      </item>
+      <item>
+       <widget class="QLabel" name="label_6">
+        <property name="text">
+         <string>Author</string>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="QLineEdit" name="e_author"/>
+      </item>
+      <item>
+       <widget class="QLabel" name="label_7">
+        <property name="text">
+         <string>Library</string>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="QLineEdit" name="e_library"/>
+      </item>
+      <item>
+       <widget class="QLabel" name="label_8">
+        <property name="text">
+         <string>Date</string>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="QDateEdit" name="e_date">
+        <property name="displayFormat">
+         <string>yyyy-MM-dd</string>
+        </property>
+        <property name="calendarPopup">
+         <bool>true</bool>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="QCheckBox" name="cb_sortByDate">
+        <property name="text">
+         <string>Sort by date</string>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <layout class="QHBoxLayout" name="horizontalLayout">
+        <item>
+         <widget class="QPushButton" name="b_filter">
+          <property name="text">
+           <string>Filter</string>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <widget class="QPushButton" name="b_add">
+          <property name="text">
+           <string>Add</string>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <widget class="QPushButton" name="b_edit">
+          <property name="text">
+           <string>Edit</string>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <widget class="QPushButton" name="b_remove">
+          <property name="text">
+           <string>Remove</string>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </item>
+     </layout>
+    </item>
+    <item>
+     <layout class="QVBoxLayout" name="verticalLayout_2">
+      <item>
+       <widget class="QLabel" name="label">
+        <property name="text">
+         <string>Records:</string>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="QListWidget" name="l_records"/>
+      </item>
+     </layout>
+    </item>
+    <item>
+     <layout class="QVBoxLayout" name="verticalLayout_3">
+      <item>
+       <widget class="QLabel" name="label_2">
+        <property name="text">
+         <string>Selected card:</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_2/main.cpp

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

Lesson_5/Task_2/record.cpp

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+#include "record.h"
+
+Record::Record(QObject *parent)
+    : QObject{parent}
+{}

Lesson_5/Task_2/record.h

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+#ifndef RECORD_H
+#define RECORD_H
+
+#include <QObject>
+#include <QDate>
+
+class Record : public QObject
+{
+    Q_OBJECT
+public:
+    explicit Record(QObject *parent = nullptr);
+    QString getType() { return m_type; }
+    void setType(QString type) { m_type = type; }
+    QString getTitle() { return m_title; }
+    void setTitle(QString title) { m_title = title; }
+    QString getAuthor() { return m_author; }
+    void setAuthor(QString author) { m_author = author; }
+    QString getLibrary() { return m_library; }
+    void setLibrary(QString library) { m_library = library; }
+    QDate getDate() { return m_date; }
+    void setDate(QDate date) { m_date = date; }
+
+signals:
+
+private:
+    QString m_type;
+    QString m_title;
+    QString m_author;
+    QString m_library;
+    QDate m_date;
+};
+
+#endif // RECORD_H