Implemented application login.

Minor UI improvement.
Fixed memory leaks.

application/appRc.qrc

@@ -0,0 +1,6 @@
+<RCC>
+    <qresource prefix="/">
+        <file>icons/login_32.png</file>
+        <file>icons/login_64.png</file>
+    </qresource>
+</RCC>

application/application.pro

@@ -22,10 +22,13 @@ win32 {
 
 SOURCES += main.cpp\
         mainwindow.cpp \
+    logindialog.cpp
 
-HEADERS  += mainwindow.h
+HEADERS  += mainwindow.h \
+    logindialog.h
 
-FORMS    += mainwindow.ui
+FORMS    += mainwindow.ui \
+    logindialog.ui
 
 
 unix {
@@ -43,3 +46,6 @@ else:unix: LIBS += -L$$OUT_PWD/../core/ -lcore
 
 INCLUDEPATH += $$PWD/../core
 DEPENDPATH += $$PWD/../core
+
+RESOURCES += \
+    appRc.qrc

application/logindialog.cpp

@@ -0,0 +1,45 @@
+#include "logindialog.h"
+#include "ui_logindialog.h"
+#include "../core/core.h"
+#include <QMessageBox>
+
+LoginDialog::LoginDialog(QWidget *parent) :
+    QDialog(parent),
+    ui(new Ui::LoginDialog)
+{
+    ui->setupUi(this);
+}
+
+LoginDialog::~LoginDialog()
+{
+    delete ui;
+}
+
+QString LoginDialog::login() const
+{
+    return ui->editLogin->text();
+}
+
+QString LoginDialog::password() const
+{
+    return ui->editPassword->text();
+}
+
+void LoginDialog::reset()
+{
+    ui->editLogin->setText("");
+    ui->editPassword->setText("");
+}
+
+void LoginDialog::accept()
+{
+    PermissionService srv;
+    if (srv.checkLogin(ui->editLogin->text(), ui->editPassword->text()))
+    {
+        QDialog::accept();
+    }
+    else
+    {
+        QMessageBox::critical(this, "Bad login", "Bad login or password");
+    }
+}

application/logindialog.h

@@ -0,0 +1,29 @@
+#ifndef LOGINDIALOG_H
+#define LOGINDIALOG_H
+
+#include <QDialog>
+
+namespace Ui {
+class LoginDialog;
+}
+
+class LoginDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit LoginDialog(QWidget *parent = 0);
+    ~LoginDialog();
+    QString login() const;
+    QString password() const;
+    void reset();
+
+private:
+    Ui::LoginDialog *ui;
+
+    // QDialog interface
+public slots:
+    void accept() override;
+};
+
+#endif // LOGINDIALOG_H

application/logindialog.ui

@@ -0,0 +1,146 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>LoginDialog</class>
+ <widget class="QDialog" name="LoginDialog">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>408</width>
+    <height>220</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Login</string>
+  </property>
+  <property name="modal">
+   <bool>true</bool>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <property name="leftMargin">
+    <number>0</number>
+   </property>
+   <property name="topMargin">
+    <number>0</number>
+   </property>
+   <property name="rightMargin">
+    <number>0</number>
+   </property>
+   <item>
+    <widget class="QWidget" name="widget" native="true">
+     <property name="styleSheet">
+      <string notr="true">background-color: rgb(255, 255, 255);</string>
+     </property>
+     <layout class="QHBoxLayout" name="horizontalLayout">
+      <item>
+       <widget class="QLabel" name="label">
+        <property name="text">
+         <string/>
+        </property>
+        <property name="pixmap">
+         <pixmap resource="appRc.qrc">:/icons/login_64.png</pixmap>
+        </property>
+       </widget>
+      </item>
+     </layout>
+    </widget>
+   </item>
+   <item>
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>40</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+   <item>
+    <widget class="QWidget" name="widget" native="true">
+     <layout class="QVBoxLayout" name="verticalLayout_2">
+      <item>
+       <widget class="QWidget" name="widget_2" native="true">
+        <layout class="QFormLayout" name="formLayout">
+         <item row="0" column="0">
+          <widget class="QLabel" name="label_2">
+           <property name="text">
+            <string>Login</string>
+           </property>
+          </widget>
+         </item>
+         <item row="0" column="1">
+          <widget class="QLineEdit" name="editLogin"/>
+         </item>
+         <item row="1" column="0">
+          <widget class="QLabel" name="label_3">
+           <property name="text">
+            <string>Password</string>
+           </property>
+          </widget>
+         </item>
+         <item row="1" column="1">
+          <widget class="QLineEdit" name="editPassword">
+           <property name="echoMode">
+            <enum>QLineEdit::Password</enum>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </widget>
+      </item>
+      <item>
+       <widget class="QDialogButtonBox" name="buttonBox">
+        <property name="orientation">
+         <enum>Qt::Horizontal</enum>
+        </property>
+        <property name="standardButtons">
+         <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+        </property>
+       </widget>
+      </item>
+     </layout>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources>
+  <include location="appRc.qrc"/>
+ </resources>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>LoginDialog</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>248</x>
+     <y>254</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>157</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>LoginDialog</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>316</x>
+     <y>260</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>

application/main.cpp

@@ -1,5 +1,6 @@
 #include "mainwindow.h"
 #include <QApplication>
+#include <QDesktopWidget>
 
 #include <QStringList>
 
@@ -7,6 +8,7 @@ int main(int argc, char *argv[])
 {
     QApplication a(argc, argv);
     MainWindow w;
+    w.move(QApplication::desktop()->screen()->rect().center() - w.rect().center());
     w.show();
 
     return a.exec();

application/mainwindow.cpp

@@ -13,6 +13,22 @@ MainWindow::MainWindow(QWidget *parent) :
     ui(new Ui::MainWindow)
 {
     ui->setupUi(this);
+    m_lblUser = new QLabel(this);
+    ui->statusBar->addWidget(m_lblUser);
+
+    m_loginDialog = new LoginDialog(this);
+
+    connect(m_loginDialog, &LoginDialog::accepted, [this]{
+        PermissionService service;
+        QSharedPointer<User> u = service.loadUser(m_loginDialog->login());
+        m_lblUser->setText(u->name());
+        m_loginDialog->reset();
+        Context::instance().setCurrentUser(u);
+    });
+
+    connect(m_loginDialog, &LoginDialog::rejected, [this]{
+        close();
+    });
 
     Context::instance().loadPlugins();
     int i = 0;
@@ -27,6 +43,11 @@ MainWindow::MainWindow(QWidget *parent) :
     }
 
    ((QVBoxLayout*)ui->navigation->layout())->addStretch(1);
+
+    if (Context::instance().db() != NULL)
+    {
+        ui->navigation->setEnabled(true);
+    }
 }
 
 MainWindow::~MainWindow()
@@ -59,13 +80,37 @@ void MainWindow::openPlugin()
 
 void MainWindow::on_actionOpen_database_triggered()
 {
-    QFileDialog dialog(this);
+    /*QFileDialog dialog(this);
     dialog.setNameFilter(tr("Database Files (*.db)"));
-    dialog.setWindowTitle(tr("Open Database"));
-    Context::instance().openDb(dialog.getOpenFileName());
+    dialog.setWindowTitle(tr("Open Database"));*/
+
+    QString dbFile = QFileDialog::getOpenFileName(this, "Open Database", "", "Database Files (*.db)");
+    if (!dbFile.isEmpty())
+    {
+        Context::instance().openDb(dbFile);
+        ui->navigation->setEnabled(true);
+        on_actionLogin_triggered();
+    }
 }
 
 void MainWindow::on_tabWidget_tabCloseRequested(int index)
 {
     ui->tabWidget->removeTab(index);
 }
+
+void MainWindow::on_actionLogin_triggered()
+{
+    QSharedPointer<User> u;
+    Context::instance().setCurrentUser(u);
+    m_lblUser->setText("");
+    m_loginDialog->show();
+}
+
+void MainWindow::showEvent(QShowEvent *evt)
+{
+    QWidget::showEvent(evt);
+    if (Context::instance().db() != NULL && Context::instance().currentUser().data() == NULL)
+    {
+        m_loginDialog->show();
+    }
+}

application/mainwindow.h

@@ -2,6 +2,9 @@
 #define MAINWINDOW_H
 
 #include <QMainWindow>
+#include <QLabel>
+
+#include "logindialog.h"
 
 #define PLUGIN_INDEX "plug_index"
 
@@ -25,8 +28,16 @@ private slots:
 
     void on_tabWidget_tabCloseRequested(int index);
 
+    void on_actionLogin_triggered();
+
 private:
     Ui::MainWindow *ui;
+    LoginDialog *m_loginDialog;
+    QLabel *m_lblUser;
+
+    // QWidget interface
+protected:
+    void showEvent(QShowEvent *evt);
 };
 
 #endif // MAINWINDOW_H

application/mainwindow.ui

@@ -15,8 +15,17 @@
   </property>
   <widget class="QWidget" name="centralWidget">
    <layout class="QHBoxLayout" name="horizontalLayout">
+    <property name="spacing">
+     <number>0</number>
+    </property>
+    <property name="leftMargin">
+     <number>0</number>
+    </property>
     <item>
      <widget class="QWidget" name="navigation" native="true">
+      <property name="enabled">
+       <bool>false</bool>
+      </property>
       <layout class="QVBoxLayout" name="verticalLayout_2"/>
      </widget>
     </item>
@@ -52,6 +61,8 @@
      <string>File</string>
     </property>
     <addaction name="actionOpen_database"/>
+    <addaction name="actionLogin"/>
+    <addaction name="separator"/>
     <addaction name="actionExit"/>
    </widget>
    <addaction name="menuFile"/>
@@ -63,6 +74,7 @@
    <attribute name="toolBarBreak">
     <bool>false</bool>
    </attribute>
+   <addaction name="actionLogin"/>
   </widget>
   <widget class="QStatusBar" name="statusBar"/>
   <action name="actionExit">
@@ -75,8 +87,19 @@
     <string>Open database...</string>
    </property>
   </action>
+  <action name="actionLogin">
+   <property name="icon">
+    <iconset resource="appRc.qrc">
+     <normaloff>:/icons/login_32.png</normaloff>:/icons/login_32.png</iconset>
+   </property>
+   <property name="text">
+    <string>Login...</string>
+   </property>
+  </action>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
- <resources/>
+ <resources>
+  <include location="appRc.qrc"/>
+ </resources>
  <connections/>
 </ui>