check if device has more than 2^32 sectors if user wants to create an msdos

partition table on it and show a warning in that case. also make the default
GPT.

svn path=/trunk/extragear/sysadmin/partitionmanager/; revision=1113771

TODO

@@ -1,8 +1,5 @@
 Plans and ideas for 1.1:
 
-* Check if no of sectors fits in an unsigned 32 bit int for msdos partition
-  tables.
-
 * offer a) no alignment of partition boundaries at all or b) legacy cylinder
   alignment or c) sector based alignment (the name is misleading, though)
 

src/gui/createpartitiontabledialog.cpp

@@ -24,6 +24,7 @@
 #include "core/partitiontable.h"
 
 #include <klocale.h>
+#include <kmessagebox.h>
 
 #include <config.h>
 
@@ -35,6 +36,8 @@ CreatePartitionTableDialog::CreatePartitionTableDialog(QWidget* parent, const De
 	setMainWidget(&widget());
 	setCaption(i18nc("@title:window", "Create a New Partition Table on <filename>%1</filename>", device().deviceNode()));
 	setButtonText(KDialog::Ok, i18nc("@action:button", "&Create New Partition Table"));
+
+	connect(&widget().radioMSDOS(), SIGNAL(toggled(bool)), SLOT(onMSDOSToggled(bool)));
 }
 
 PartitionTable::TableType CreatePartitionTableDialog::type() const
@@ -47,3 +50,20 @@ PartitionTable::TableType CreatePartitionTableDialog::type() const
 
 	return PartitionTable::msdos_sectorbased;
 }
+
+void CreatePartitionTableDialog::onMSDOSToggled(bool on)
+{
+	if (on && device().totalSectors() > 0xffffffff)
+	{
+		if (KMessageBox::warningContinueCancel(this,
+				i18nc("@info",
+					"<para>Do you really want to create an MS-Dos partition table on <filename>%1</filename>?</para>"
+					"<para>This device has more than 2^32 sectors. That is the most the MS-Dos partition table type supports, so you will not be able to use the whole device.</para>", device().deviceNode()),
+				i18nc("@title:window", "Really Create MS-Dos Partition Table Type?"),
+				KGuiItem(i18nc("@action:button", "Create MS-Dos Type"), "arrow-right"),
+				KStandardGuiItem::cancel(), "reallyCreateMSDOSOnLargeDevice") == KMessageBox::Cancel)
+		{
+			widget().radioGPT().setChecked(true);
+		}
+	}
+}

src/gui/createpartitiontabledialog.h

@@ -44,6 +44,9 @@ class CreatePartitionTableDialog : public KDialog
 		const CreatePartitionTableWidget& widget() const { return *m_DialogWidget; }
 		const Device& device() const { return m_Device; }
 
+	protected slots:
+		void onMSDOSToggled(bool on);
+
 	private:
 		CreatePartitionTableWidget* m_DialogWidget;
 		const Device& m_Device;

src/gui/createpartitiontablewidgetbase.ui

@@ -24,9 +24,9 @@
    <item>
     <layout class="QVBoxLayout" name="verticalLayout" stretch="0,0">
      <item>
-      <widget class="QRadioButton" name="m_RadioMSDOS">
+      <widget class="QRadioButton" name="m_RadioGPT">
        <property name="text">
-        <string>MS-Dos</string>
+        <string>GPT</string>
        </property>
        <property name="checked">
         <bool>true</bool>
@@ -34,9 +34,12 @@
       </widget>
      </item>
      <item>
-      <widget class="QRadioButton" name="m_RadioGPT">
+      <widget class="QRadioButton" name="m_RadioMSDOS">
        <property name="text">
-        <string>GPT</string>
+        <string>MS-Dos</string>
+       </property>
+       <property name="checked">
+        <bool>false</bool>
        </property>
       </widget>
      </item>