some fixes

CMakeLists.txt

@@ -3,7 +3,7 @@ project(qmarkdowntextedit)
 
 #set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
 
-#set(CMAKE_AUTOMOC ON)
+set(CMAKE_AUTOMOC ON)
 set(CMAKE_AUTOUIC ON)
 set(CMAKE_AUTORCC ON)
 set(CMAKE_INCLUDE_CURRENT_DIR ON)
@@ -21,8 +21,8 @@ set(RESOURCE_FILES
 qt5_add_resources(RESOURCE_ADDED ${RESOURCE_FILES})
 
 set(SOURCE_FILES
-    highlighter.cpp
-    highlighter.h
+    markdownhighlighter.cpp
+    markdownhighlighter.h
     main.cpp
     mainwindow.cpp
     mainwindow.h
@@ -31,7 +31,8 @@ set(SOURCE_FILES
     qmarkdowntextedit.h
     qplaintexteditsearchwidget.ui
     qplaintexteditsearchwidget.cpp
-    qplaintexteditsearchwidget.h)
+    qplaintexteditsearchwidget.h
+    )
 
 add_executable(qmarkdowntextedit ${SOURCE_FILES} ${RESOURCE_ADDED})
 
@@ -45,4 +46,4 @@ add_definitions(${Qt5Widgets_DEFINITIONS})
 set(CMAKE_CXX_FLAGS "${Qt5Widgets_EXECUTABLE_COMPILE_FLAGS}")
 
 # The Qt5Widgets_LIBRARIES variable also includes QtGui and QtCore
-target_link_libraries(qmarkdowntextedit ${Qt5Widgets_LIBRARIES})
+target_link_libraries(qmarkdowntextedit Qt5::Widgets)

main.cpp

@@ -14,12 +14,28 @@
 
 #include "mainwindow.h"
 #include <QApplication>
+#include <QFileInfo>
+#include <QDebug>
 
 int main(int argc, char *argv[])
 {
     QApplication a(argc, argv);
+    QString filename;
+    if (argc > 1) {
+        filename = argv[1];
+    }
+    if (!filename.isEmpty() && !QFileInfo(filename).isReadable()) {
+        qWarning() << filename << "is not a readable file";
+        return 1;
+    }
+
     MainWindow w;
     w.show();
 
+    if (!filename.isEmpty()) {
+        w.loadFile(filename);
+    }
+
+
     return a.exec();
 }

mainwindow.cpp

@@ -17,15 +17,102 @@
 
 #include "mainwindow.h"
 #include "ui_mainwindow.h"
+#include "qmarkdowntextedit.h"
+#include <QDebug>
+#include <QFileDialog>
+#include <QMessageBox>
 
 MainWindow::MainWindow(QWidget *parent) :
     QMainWindow(parent),
     ui(new Ui::MainWindow)
 {
     ui->setupUi(this);
+    QToolBar *toolBar = new QToolBar;
+    addToolBar(toolBar);
+    QAction *openAction = new QAction(QIcon::fromTheme("document-open"), tr("Open..."));
+    openAction->setShortcut(QKeySequence::Open);
+    connect(openAction, &QAction::triggered, this, &MainWindow::open);
+
+    QAction *saveAction = new QAction(QIcon::fromTheme("document-save"), tr("Save"));
+    saveAction->setShortcut(QKeySequence::Save);
+    QAction *saveAsAction = new QAction(QIcon::fromTheme("document-save-as"), tr("Save as..."));
+    saveAsAction->setShortcut(QKeySequence::SaveAs);
+    QAction *quitAction = new QAction(QIcon::fromTheme("view-close"), tr("Quit"));
+    quitAction->setShortcut(QKeySequence::Quit);
+    connect(quitAction, &QAction::triggered, this, &MainWindow::onQuit);
+
+    m_loadedContent = ui->textEdit->toPlainText();
+
+    toolBar->addActions({openAction, saveAction, saveAsAction, quitAction});
 }
 
 MainWindow::~MainWindow()
 {
     delete ui;
 }
+
+void MainWindow::loadFile(const QString &filename)
+{
+    QFile file(filename);
+    if (!file.open(QIODevice::ReadOnly)) {
+        qWarning() << "Failed to open" << filename;
+        return;
+    }
+
+    m_filename = filename;
+    m_loadedContent = QString::fromLocal8Bit(file.readAll());
+    ui->textEdit->setPlainText(m_loadedContent);
+}
+
+void MainWindow::saveToFile(const QString &filename)
+{
+    QFile file(filename);
+    if (!file.open(QIODevice::WriteOnly)) {
+        qWarning() << "Failed to open" << filename;
+        return;
+    }
+
+    m_filename = filename;
+
+    m_loadedContent = ui->textEdit->toPlainText();
+    file.write(m_loadedContent.toLocal8Bit());
+}
+
+void MainWindow::open()
+{
+    QString filename = QFileDialog::getOpenFileName();
+    if (filename.isEmpty()) {
+        return;
+    }
+    loadFile(filename);
+}
+
+void MainWindow::save()
+{
+    if (!m_filename.isEmpty()) {
+        saveAs();
+        return;
+    }
+
+    saveToFile(m_filename);
+}
+
+void MainWindow::saveAs()
+{
+    QString filename = QFileDialog::getSaveFileName();
+    if (filename.isEmpty()) {
+        return;
+    }
+
+    saveToFile(filename);
+}
+
+void MainWindow::onQuit()
+{
+    if (ui->textEdit->toPlainText() != m_loadedContent) {
+        if (QMessageBox::question(this, tr("Not saved"), tr("Document not saved, sure you want to quit?")) != QMessageBox::Yes) {
+            return;
+        }
+    }
+    close();
+}

mainwindow.h

@@ -25,9 +25,20 @@ class MainWindow : public QMainWindow
     Q_OBJECT
 
 public:
-    explicit MainWindow(QWidget *parent = 0);
+    explicit MainWindow(QWidget *parent = nullptr);
     ~MainWindow();
 
+    void loadFile(const QString &filename);
+    void saveToFile(const QString &filename);
+
+private slots:
+    void open();
+    void save();
+    void saveAs();
+    void onQuit();
+
 private:
     Ui::MainWindow *ui;
+    QString m_loadedContent;
+    QString m_filename;
 };