add a version check feature

this is only enabled on windows as there is no package manager handling the versions
and we don't want users to stay on old versions forever

CMakeLists.txt

@@ -9,7 +9,7 @@ set(QHEXEDIT_DIR libs/qhexedit)
 add_subdirectory(${ANTLR_DIR})
 add_subdirectory(${QHEXEDIT_DIR})
 
-find_package(Qt4 COMPONENTS QtCore QtGui QtTest REQUIRED)
+find_package(Qt4 COMPONENTS QtCore QtGui QtNetwork QtTest REQUIRED)
 
 include(${QT_USE_FILE})
 add_definitions(${QT_DEFINITIONS})
@@ -98,6 +98,9 @@ set_source_files_properties(src/AboutDialog.cpp PROPERTIES OBJECT_DEPENDS ${CMAK
 
 #icon and correct libs/subsystem for windows
 if(WIN32)
+        #enable version check for windows
+        add_definitions(-DCHECKNEWVERSION)
+
 	IF( MINGW )
 	# resource compilation for MinGW
 		ADD_CUSTOM_COMMAND( OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/sqlbicon.o

src/MainWindow.cpp

@@ -15,6 +15,7 @@
 #include "SqlExecutionArea.h"
 #include "VacuumDialog.h"
 #include "DbStructureModel.h"
+#include "gen_version.h"
 
 #include <QFileDialog>
 #include <QFile>
@@ -29,6 +30,11 @@
 #include <QSortFilterProxyModel>
 #include <QElapsedTimer>
 #include <sqlite3.h>
+#include <QNetworkRequest>
+#include <QNetworkReply>
+#include <QNetworkAccessManager>
+#include <QSettings>
+
 
 MainWindow::MainWindow(QWidget* parent)
     : QMainWindow(parent),
@@ -122,6 +128,15 @@ void MainWindow::init()
 
     // Load all settings
     reloadSettings();
+
+#ifdef CHECKNEWVERSION
+    // Check for a new release version, usually only enabled on windows
+    m_NetworkManager = new QNetworkAccessManager(this);
+    QObject::connect(m_NetworkManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(httpresponse(QNetworkReply*)));
+
+    QUrl url("https://raw.github.com/rp-/sqlitebrowser/master/currentrelease");
+    m_NetworkManager->get(QNetworkRequest(url));
+#endif
 }
 
 bool MainWindow::fileOpen(const QString& fileName)
@@ -1201,3 +1216,66 @@ void MainWindow::reloadSettings()
     populateStructure();
     resetBrowser();
 }
+
+void MainWindow::httpresponse(QNetworkReply *reply)
+{
+    //QVariant statuscode = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute);
+
+    if(reply->error() == QNetworkReply::NoError)
+    {
+        // first line of the currentrelease file contains a major.minor.patch version string
+        QString sversion(reply->readLine());
+
+        QStringList versiontokens = sversion.split(".");
+        int major = versiontokens[0].toInt();
+        int minor = versiontokens[1].toInt();
+        int patch = versiontokens[2].toInt();
+
+        bool newversion = false;
+        if(major > MAJOR_VERSION)
+            newversion = true;
+        else if(major == MAJOR_VERSION)
+        {
+            if(minor > MINOR_VERSION)
+                newversion = true;
+            else if(minor == MINOR_VERSION)
+            {
+                if(patch > PATCH_VERSION)
+                    newversion = true;
+            }
+        }
+
+        if(newversion)
+        {
+            QSettings settings(QApplication::organizationName(), QApplication::organizationName());
+            bool disablecheck = settings.value("checkversion/disable", false).toBool();
+            int ignmajor = settings.value("checkversion/major", 999).toInt();
+            int ignminor = settings.value("checkversion/minor", 0).toInt();
+            int ignpatch = settings.value("checkversion/patch", 0).toInt();
+
+            // check if the user doesn't care about the current update
+            if(!(ignmajor == major && ignminor == minor && ignpatch == patch && disablecheck))
+            {
+                QMessageBox msgBox;
+                QPushButton *idontcarebutton = msgBox.addButton(tr("Don't show again"), QMessageBox::ActionRole);
+                msgBox.addButton(QMessageBox::Ok);
+                msgBox.setTextFormat(Qt::RichText);
+                msgBox.setWindowTitle(tr("New version available."));
+                msgBox.setText(tr("A new sqlitebrowser version is available (%1.%2.%3).<br/><br/>"
+                                  "Please download at <a href='https://github.com/rp-/sqlitebrowser/releases'>https://github.com/rp-/sqlitebrowser/releases</a>.").arg(major).arg(minor).arg(patch));
+                msgBox.exec();
+
+                if(msgBox.clickedButton() == idontcarebutton)
+                {
+                    // save that the user don't want to get bothered about this update
+                    settings.beginGroup("checkversion");
+                    settings.setValue("major", major);
+                    settings.setValue("minor", minor);
+                    settings.setValue("patch", minor);
+                    settings.setValue("disable", true);
+                    settings.endGroup();
+                }
+            }
+        }
+    }
+}

src/MainWindow.h

@@ -16,6 +16,8 @@ class QLabel;
 class QModelIndex;
 class SqliteTableModel;
 class DbStructureModel;
+class QNetworkReply;
+class QNetworkAccessManager;
 
 namespace Ui {
 class MainWindow;
@@ -81,6 +83,8 @@ private:
     QStandardItemModel completerModelTables;
     SqlTextEdit::FieldCompleterModelMap completerModelsFields;
 
+    QNetworkAccessManager* m_NetworkManager;
+
     void init();
 
     void updateRecentFileActions();
@@ -148,6 +152,7 @@ private slots:
     virtual void saveSqlFile();
     virtual void loadExtension();
     virtual void reloadSettings();
+    virtual void httpresponse(QNetworkReply* reply);
 };
 
 #endif

src/gen_version.h

@@ -1 +1,7 @@
+#ifndef __GEN_VERSIONS_H__
+#define __GEN_VERISONS_H__
 #define APP_VERSION "master_git"
+#define MAJOR_VERSION 999
+#define MINOR_VERSION 0
+#define PATCH_VERSION 0
+#endif

src/src.pro

@@ -1,6 +1,6 @@
 TEMPLATE = app
 
-QT += core gui
+QT += core gui network
 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 
 TARGET = sqlitebrowser

src/version.sh

@@ -2,12 +2,15 @@
 cd $1
 
 version=`git log -n1 --format="\"%h_git\""`
-version_macro="#define APP_VERSION $version"
+inc_guard_head="#ifndef __GEN_VERSIONS_H__\n#define __GEN_VERISONS_H__\n"
+inc_guard_foot="#endif"
+version_numbers="#define MAJOR_VERSION 999\n#define MINOR_VERSION 0\n#define PATCH_VERSION 0\n"
+version_macro="#define APP_VERSION $version\n"
 
 if [ -f gen_version.h ]; then
 	current_file=`cat gen_version.h`
 fi
 
 if [ "$version_macro" != "$current_file" ]; then
-	echo "$version_macro" > gen_version.h
+	echo -e "$inc_guard_head$version_macro$version_numbers$inc_guard_foot" > gen_version.h
 fi