rbutil: allow checking bootloader installer capabilities

Instead of checking for certain hardcoded strings, fetch
the actual capability bitmask by instantiating an installer
and querying it.

Change-Id: I7883d9c1e90da37ee7c0189732ac626685adbfa1

utils/rbutilqt/base/bootloaderinstallbase.h

@@ -67,8 +67,6 @@ class BootloaderInstallBase : public QObject
         //  be modified for new targets
         static QString postinstallHints(QString model);
 
-        //! returns the correct BootloaderInstaller object for the requested type
-        static BootloaderInstallBase* createBootloaderInstaller(QObject* parent,QString type);
     protected slots:
         void downloadReqFinished(int id, bool error);
         void downloadBlFinish(bool error);

utils/rbutilqt/base/bootloaderinstallhelper.cpp

@@ -77,6 +77,26 @@ BootloaderInstallBase* BootloaderInstallHelper::createBootloaderInstaller(QObjec
     }
 }
 
+BootloaderInstallBase::Capabilities
+    BootloaderInstallHelper::bootloaderInstallerCapabilities(QObject *parent, QString type)
+{
+    /* Note - this is a terrible pattern in general, but in this case
+     * it is a much simpler option to just allocate a class instance.
+     * This operation is rarely used, anyway. */
+
+    BootloaderInstallBase* bootloaderInstaller =
+        createBootloaderInstaller(parent, type);
+
+    BootloaderInstallBase::Capabilities caps = BootloaderInstallBase::Capabilities();
+
+    if(bootloaderInstaller) {
+        caps = bootloaderInstaller->capabilities();
+        delete bootloaderInstaller;
+    }
+
+    return caps;
+}
+
 
 //! @brief Return post install hints string.
 //! @param model model string

utils/rbutilqt/base/bootloaderinstallhelper.h

@@ -29,6 +29,7 @@ class BootloaderInstallHelper : public QObject
     Q_OBJECT
     public:
         static BootloaderInstallBase* createBootloaderInstaller(QObject* parent, QString type);
+        static BootloaderInstallBase::Capabilities bootloaderInstallerCapabilities(QObject *parent, QString type);
         static QString postinstallHints(QString model);
 };
 

utils/rbutilqt/base/bootloaderinstallipod.cpp

@@ -28,10 +28,6 @@
 BootloaderInstallIpod::BootloaderInstallIpod(QObject *parent)
         : BootloaderInstallBase(parent)
 {
-    (void)parent;
-    // initialize sector buffer. The sector buffer is part of the ipod_t
-    // structure, so a second instance of this class will have its own buffer.
-    ipod_alloc_buffer(&ipod, BUFFER_SIZE);
 }
 
 
@@ -45,11 +41,18 @@ BootloaderInstallIpod::~BootloaderInstallIpod()
 
 bool BootloaderInstallIpod::install(void)
 {
+    // initialize sector buffer. The sector buffer is part of the ipod_t
+    // structure, so a second instance of this class will have its own buffer.
+    if(ipod.sectorbuf == nullptr) {
+        ipod_alloc_buffer(&ipod, BUFFER_SIZE);
+    }
+
     if(ipod.sectorbuf == nullptr) {
         emit logItem(tr("Error: can't allocate buffer memory!"), LOGERROR);
         emit done(true);
         return false;
     }
+
     // save buffer pointer before cleaning up ipod_t structure
     unsigned char* sb = ipod.sectorbuf;
     memset(&ipod, 0, sizeof(struct ipod_t));

utils/rbutilqt/base/bootloaderinstallsansa.cpp

@@ -27,10 +27,6 @@
 BootloaderInstallSansa::BootloaderInstallSansa(QObject *parent)
         : BootloaderInstallBase(parent)
 {
-    (void)parent;
-    // initialize sector buffer. The sector buffer is part of the sansa_t
-    // structure, so a second instance of this class will have its own buffer.
-    sansa_alloc_buffer(&sansa, BUFFER_SIZE);
 }
 
 
@@ -46,6 +42,12 @@ BootloaderInstallSansa::~BootloaderInstallSansa()
  */
 bool BootloaderInstallSansa::install(void)
 {
+    // initialize sector buffer. The sector buffer is part of the sansa_t
+    // structure, so a second instance of this class will have its own buffer.
+    if(sansa.sectorbuf == nullptr) {
+        sansa_alloc_buffer(&sansa, BUFFER_SIZE);
+    }
+
     if(sansa.sectorbuf == nullptr) {
         emit logItem(tr("Error: can't allocate buffer memory!"), LOGERROR);
         return false;

utils/rbutilqt/rbutilqt.cpp

@@ -359,16 +359,14 @@ void RbUtilQt::updateSettings()
 
 void RbUtilQt::updateDevice()
 {
-    /* TODO: We should check the flags of the bootloaderinstall classes, and not
-     * just check if its != none or != "fwpatcher" */
+    PlayerBuildInfo* playerBuildInfo = PlayerBuildInfo::instance();
 
-    /* Enable bootloader installation, if possible */
-    bool bootloaderInstallable =
-        PlayerBuildInfo::instance()->value(PlayerBuildInfo::BootloaderMethod).toString() != "none";
+    BootloaderInstallBase::Capabilities bootloaderCapabilities =
+        BootloaderInstallHelper::bootloaderInstallerCapabilities(this,
+            playerBuildInfo->value(PlayerBuildInfo::BootloaderMethod).toString());
 
-    /* Enable bootloader uninstallation, if possible */
-    bool bootloaderUninstallable = bootloaderInstallable &&
-        PlayerBuildInfo::instance()->value(PlayerBuildInfo::BootloaderMethod) != "fwpatcher";
+    /* Disable uninstallation actions if they are not supported. */
+    bool bootloaderUninstallable = !(bootloaderCapabilities & BootloaderInstallBase::Uninstall);
     ui.labelRemoveBootloader->setEnabled(bootloaderUninstallable);
     ui.buttonRemoveBootloader->setEnabled(bootloaderUninstallable);
     ui.actionRemove_bootloader->setEnabled(bootloaderUninstallable);
@@ -379,11 +377,11 @@ void RbUtilQt::updateDevice()
     ui.menuA_ctions->setEnabled(configurationValid);
 
     // displayed device info
-    QString brand = PlayerBuildInfo::instance()->value(PlayerBuildInfo::Brand).toString();
+    QString brand = playerBuildInfo->value(PlayerBuildInfo::Brand).toString();
     QString name
         = QString("%1 (%2)").arg(
-            PlayerBuildInfo::instance()->value(PlayerBuildInfo::DisplayName).toString(),
-            PlayerBuildInfo::instance()->statusAsString());
+            playerBuildInfo->value(PlayerBuildInfo::DisplayName).toString(),
+            playerBuildInfo->statusAsString());
     ui.labelDevice->setText(QString("<b>%1 %2</b>").arg(brand, name));
 
     QString mountpoint = RbSettings::value(RbSettings::Mountpoint).toString();
@@ -398,7 +396,7 @@ void RbUtilQt::updateDevice()
     }
 
     QPixmap pm;
-    QString m = PlayerBuildInfo::instance()->value(PlayerBuildInfo::PlayerPicture).toString();
+    QString m = playerBuildInfo->value(PlayerBuildInfo::PlayerPicture).toString();
     pm.load(":/icons/players/" + m + "-small.png");
     pm = pm.scaledToHeight(QFontMetrics(QApplication::font()).height() * 3);
     ui.labelPlayerPic->setPixmap(pm);