DriveSetup: Removed (some) knowledge about initialization.

* Instead of guessing whether or not to show the InitParamsPanel, the panel
  will now no longer show itself if the disk system does not have an editor,
  and silently succeed.
* This also fixed a potential crash if the editor could not be created for
  some reason.
* Minor cleanup.

src/apps/drivesetup/InitParamsPanel.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright 2008-2010 Haiku Inc. All rights reserved.
+ * Copyright 2008-2013 Haiku, Inc. All rights reserved.
  * Distributed under the terms of the MIT license.
  *
  * Authors:
@@ -104,15 +104,16 @@ InitParamsPanel::InitParamsPanel(BWindow* window, const BString& diskSystem,
 		// put the add-on
 		manager->PutAddOn(addOn);
 
-		status_t err = addOn->GetParameterEditor(B_INITIALIZE_PARAMETER_EDITOR, &fEditor);
+		status_t err = addOn->GetParameterEditor(B_INITIALIZE_PARAMETER_EDITOR,
-		if (err != B_OK) {
+			&fEditor);
+		if (err != B_OK)
 			fEditor = NULL;
-		}
 	} else {
 		fEditor = NULL;
 	}
+	if (fEditor == NULL)
+		return;
 
-	// TODO: fEditor should be checked for NULL before adding.
 	SetLayout(new BGroupLayout(B_HORIZONTAL));
 	const float spacing = be_control_look->DefaultItemSpacing();
 	AddChild(BGroupLayoutBuilder(B_VERTICAL, spacing)
@@ -188,6 +189,10 @@ InitParamsPanel::MessageReceived(BMessage* message)
 int32
 InitParamsPanel::Go(BString& name, BString& parameters)
 {
+	// Without an editor, we cannot change anything, anyway
+	if (fEditor == NULL)
+		return GO_SUCCESS;
+
 	// run the window thread, to get an initial layout of the controls
 	Hide();
 	Show();

src/apps/drivesetup/MainWindow.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2013 Haiku Inc. All rights reserved.
+ * Copyright 2002-2013 Haiku, Inc. All rights reserved.
  * Distributed under the terms of the MIT license.
  *
  * Authors:
@@ -7,8 +7,10 @@
  *		Ithamar R. Adema <[email protected]>
  *		Ingo Weinhold <[email protected]>
  *		Stephan Aßmus <[email protected]>
+ *		Axel Dörfler, [email protected].
  */
 
+
 #include "MainWindow.h"
 
 #include <stdio.h>
@@ -140,6 +142,38 @@ private:
 };
 
 
+class ModificationPreparer {
+public:
+	ModificationPreparer(BDiskDevice* disk)
+		:
+		fDisk(disk),
+		fModificationStatus(fDisk->PrepareModifications())
+	{
+	}
+	~ModificationPreparer()
+	{
+		if (fModificationStatus == B_OK)
+			fDisk->CancelModifications();
+	}
+	status_t ModificationStatus() const
+	{
+		return fModificationStatus;
+	}
+	status_t CommitModifications()
+	{
+		status_t ret = fDisk->CommitModifications();
+		if (ret == B_OK)
+			fModificationStatus = B_ERROR;
+
+		return ret;
+	}
+
+private:
+	BDiskDevice*	fDisk;
+	status_t		fModificationStatus;
+};
+
+
 enum {
 	MSG_MOUNT_ALL				= 'mnta',
 	MSG_MOUNT					= 'mnts',
@@ -747,38 +781,6 @@ MainWindow::_MountAll()
 // #pragma mark -
 
 
-class ModificationPreparer {
-public:
-	ModificationPreparer(BDiskDevice* disk)
-		:
-		fDisk(disk),
-		fModificationStatus(fDisk->PrepareModifications())
-	{
-	}
-	~ModificationPreparer()
-	{
-		if (fModificationStatus == B_OK)
-			fDisk->CancelModifications();
-	}
-	status_t ModificationStatus() const
-	{
-		return fModificationStatus;
-	}
-	status_t CommitModifications()
-	{
-		status_t ret = fDisk->CommitModifications();
-		if (ret == B_OK)
-			fModificationStatus = B_ERROR;
-
-		return ret;
-	}
-
-private:
-	BDiskDevice*	fDisk;
-	status_t		fModificationStatus;
-};
-
-
 void
 MainWindow::_Initialize(BDiskDevice* disk, partition_id selectedPartition,
 	const BString& diskSystemName)
@@ -871,19 +873,10 @@ MainWindow::_Initialize(BDiskDevice* disk, partition_id selectedPartition,
 
 	BString name;
 	BString parameters;
-
+	InitParamsPanel* panel = new InitParamsPanel(this, diskSystemName,
-	// TODO: diskSystem.IsFileSystem() seems like a better fit here?
+		partition);
-	if (diskSystemName == "Be File System"
+	if (panel->Go(name, parameters) == GO_CANCELED)
-		|| diskSystemName == "NT File System") {
+		return;
-		InitParamsPanel* panel = new InitParamsPanel(this, diskSystemName,
-			partition);
-		if (panel->Go(name, parameters) == GO_CANCELED)
-			return;
-	} else if (diskSystemName == "Intel Partition Map") {
-		// TODO: parameters?
-	} else if (diskSystemName == "Intel Extended Partition") {
-		// TODO: parameters?
-	}
 
 	bool supportsName = diskSystem.SupportsContentName();
 	BString validatedName(name);