From 6b71e3de8f455b215ba91baf0f75155ada98968c Mon Sep 17 00:00:00 2001
From: Michael Murphy <mmstickman@gmail.com>
Date: Mon, 21 May 2018 12:37:08 -0600
Subject: [PATCH] Only update disk options when the device layout has changed

---
 src/MainWindow.vala             |  1 +
 src/Objects/InstallOptions.vala | 28 ++++++++++++++++++++++------
 src/Views/DiskView.vala         |  3 +--
 3 files changed, 24 insertions(+), 8 deletions(-)

diff --git a/src/MainWindow.vala b/src/MainWindow.vala
index b1a9598c9..0107c1118 100644
--- a/src/MainWindow.vala
+++ b/src/MainWindow.vala
@@ -61,6 +61,7 @@ public class Installer.MainWindow : Gtk.Dialog {
         get_style_context ().add_class ("os-installer");
 
         minimum_disk_size = Distinst.minimum_disk_size (5000000000);
+        InstallOptions.get_default ().set_minimum_size (minimum_disk_size);
 
         language_view.next_step.connect (() => load_keyboard_view ());
     }
diff --git a/src/Objects/InstallOptions.vala b/src/Objects/InstallOptions.vala
index 41082cabc..3dbdad4de 100644
--- a/src/Objects/InstallOptions.vala
+++ b/src/Objects/InstallOptions.vala
@@ -20,6 +20,8 @@
 
 public class InstallOptions : GLib.Object {
     private static InstallOptions _options_object;
+    private uint64 minimum_size;
+    private uint64 layout_hash;
     private Distinst.InstallOptions _options;
     private Distinst.Disks disks;
     public Distinst.InstallOption? selected_option;
@@ -32,6 +34,10 @@ public class InstallOptions : GLib.Object {
         return _options_object;
     }
 
+    public void set_minimum_size (uint64 size) {
+        minimum_size = size;
+    }
+
     public bool has_recovery () {
         return null != get_options().get_recovery_option ();
     }
@@ -41,16 +47,26 @@ public class InstallOptions : GLib.Object {
         return null != recovery && recovery.get_oem_mode ();
     }
 
-    public unowned Distinst.InstallOptions new_options (uint64 minimum_disk_size) {
-        disks = Distinst.Disks.probe ();
-        _options = new Distinst.InstallOptions (disks, minimum_disk_size);
+    public unowned Distinst.InstallOptions get_options () {
+        if (null == _options) {
+            disks = Distinst.Disks.probe ();
+            disks.initialize_volume_groups ();
+            layout_hash = Distinst.device_layout_hash ();
+            _options = new Distinst.InstallOptions (disks, minimum_size);
+        }
+
         return _options;
     }
 
-    public unowned Distinst.InstallOptions get_options () {
-        if (null == _options) {
+    // Returns an updated option if the device layout has changed.
+    public unowned Distinst.InstallOptions get_updated_options () {
+        var new_hash = Distinst.device_layout_hash ();
+        if (layout_hash != new_hash) {
+            stderr.printf ("layout changed\n");
+            layout_hash = new_hash;
             disks = Distinst.Disks.probe ();
-            _options = new Distinst.InstallOptions (disks, 0);
+            _options = new Distinst.InstallOptions (disks, minimum_size);
+            selected_option = null;
         }
 
         return _options;
diff --git a/src/Views/DiskView.vala b/src/Views/DiskView.vala
index 93e52c375..d835db79d 100644
--- a/src/Views/DiskView.vala
+++ b/src/Views/DiskView.vala
@@ -104,8 +104,7 @@ public class Installer.DiskView : AbstractInstallerView {
         DiskButton[] enabled_buttons = {};
         DiskButton[] disabled_buttons = {};
 
-        unowned Distinst.InstallOptions install_options = InstallOptions.get_default ()
-            .new_options (minimum_disk_size);
+        unowned Distinst.InstallOptions install_options = InstallOptions.get_default ().get_updated_options ();
 
         if (install_options == null) {
             critical (_("unable to get installation options"));