doxygen/html/fbgui_8h_source.html

00001 /*
+00002  * Copyright (c) 2010,2011 - RZ Uni Freiburg
+00003  * Copyright (c) 2010,2011 - OpenSLX Project
+00004  *
+00005  * This program/file is free software distributed under the GPL version 2.
+00006  * See http://openslx.org/COPYING
+00007  *
+00008  * If you have any feedback please consult http://openslx.org/feedback and
+00009  * send your feedback to feedback@openslx.org
+00010  *
+00011  * General information about OpenSLX can be found under http://openslx.org
+00012  *
+00013  *
+00014  *         Main class of the fbgui:
+00015  *              - Manages display of components and their communications
+00016  *
+00017  */
+00018
+00019 #ifndef FBGUI_H
+00020 #define FBGUI_H
+00021
+00022 #include <QWSServer>
+00023 #include <QtGui>
+00024 #include <QtWebKit>
+00025 #include <QxtCore>
+00026
+00027 // Internal default settings
+00028 #define DEFAULT_URL "http://www.google.com"
+00029 #define DEFAULT_DOWNLOAD_DIR "/tmp/fbgui"
+00030 #define DEFAULT_CONFIG_PATH "/etc/fbgui.conf"
+00031 #define DEFAULT_LOG_FILE_PATH "/tmp/fbgui.log"
+00032 #define DEFAULT_UPDATE_INTERVAL 1;
+00033 #define DEFAULT_QRC_HTML_DIR ":/html"
+00034 #define DEFAULT_FILE_TRIGGER "/tmp/fbgui/trigger"
+00035
+00036 // Global settings variables
+00037 extern QString logFilePath;
+00038 extern QString ipConfigFilePath;
+00039 extern QThread dmThread;
+00040 extern QString serialLocation;
+00041 extern QString fileToTriggerURL;
+00042 extern QString sessionID;
+00043 extern QString binPath;
+00044 extern QString downloadPath;
+00045 extern QUrl baseURL;
+00046 extern int debugMode;
+00047 extern int updateInterval;
+00048
+00049 class fbgui: public QMainWindow {
+00050 Q_OBJECT
+00051
+00052 public:
+00053    fbgui();
+00054    ~fbgui();
+00055
+00056 public slots:
+00057         void init();
+00058
+00059 private:
+00060    //-------------------
+00061    //   layout setup:
+00062    //-------------------
+00063    // Sets the layout depending on the debug mode:
+00064    //   no debug or debugMode = 0 -> only browser shown.
+00065    //   debugMode = 1             -> split main window in browser and debug console.
+00066    void setupLayout();
+00067    // Create all actions for the GUI. (Currently only quit.)
+00068    void createActions();
+00069    // Create a debug console widget as QTextEdit in order to print debug messages
+00070    // directly within the GUI. This was needed since ttys can't really be used
+00071    // for debugging purposes in the preboot environment.
+00072    void createDebugConsole();
+00073
+00074    //----------------------------------------
+00075    //   control the display of components:
+00076    //----------------------------------------
+00077    // watches for the file triggering the loading of the URL.
+00078    // the file can be specified by the corresponding option.
+00079    void watchForTrigger();
+00080    bool checkHost() const;
+00081    void loadURL();
+00082    QByteArray generatePOSTData();
+00083
+00084    //----------------------------------
+00085    //   widgets constituing the gui:
+00086    //----------------------------------
+00087    // QWebView for displaying internet content
+00088    QWebView* _webView;
+00089    // QSplitter to split the main window in two resizable frames.
+00090    QSplitter* _splitter;
+00091    // QTextEdit implementing a minimalistic debug console.
+00092    QTextEdit* _debugConsole;
+00093
+00094    //------------------
+00095    //   action list:
+00096    //------------------
+00097    // closes the main window provoking the application to quit.
+00098    QAction* _quit;
+00099    // triggers toggleDebugConsole()
+00100    QAction* _toggleDebugConsole;
+00101
+00102    // watcher to detect changes in the observed directory.
+00103    QFileSystemWatcher* _watcher;
+00104
+00105 private slots:
+00106    // toggles debug console when action _toggleDebugConsole happens.
+00107    void toggleDebugConsole();
+00108
+00109    // This function is triggered by fileChanged Signal of _watcher.
+00110    // It deletes _watcher, since we don't need it anymore and tries to load URL.
+00111    void prepareURLLoad();
+00112    void loadURLDone(bool success);
+00113
+00114    // shut off the system
+00115    void performShutDown();
+00116    // reboot the system
+00117    void performReboot();
+00118    // shows "loading system" page
+00119    void loadSystem();
+00120    // prepares kexec by loading downloaded initramfs, kernel into kexec
+00121    void prepareKexec();
+00122    // executes: kexec -e
+00123    void runKexec();
+00124 };
+00125
+00126 #endif // FBGUI_H
+