From c2d1e9c2dda3f131cbd875f85cf692b799abc3e7 Mon Sep 17 00:00:00 2001
From: Peter Eisenmann <p3732@getgoogleoff.me>
Date: Sat, 30 Apr 2022 21:00:23 +0200
Subject: [PATCH] disk: add empty state (no disks)

* add icon to represent no disks
* use AdwStatusPage to represent empty state
* return alternating dummy disks or no disks in demo-mode
---
 .../icon/scalable/actions/no-disk-symbolic.svg     |  1 +
 data/resources/os-installer.gresource.xml          |  3 ++-
 data/resources/ui/pages/disk.blp                   |  9 +++++++++
 src/ui/pages/disk.py                               | 14 +++++++++++---
 src/util/provider/disk_provider.py                 |  3 +++
 5 files changed, 26 insertions(+), 4 deletions(-)
 create mode 100644 data/resources/icon/scalable/actions/no-disk-symbolic.svg

diff --git a/data/resources/icon/scalable/actions/no-disk-symbolic.svg b/data/resources/icon/scalable/actions/no-disk-symbolic.svg
new file mode 100644
index 0000000..e715783
--- /dev/null
+++ b/data/resources/icon/scalable/actions/no-disk-symbolic.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16"><path d="M 4.0000003,0 C 2.3554526,0 1,1.3554897 1,3 V 5.4999999 H 3.0000004 V 3 c 0,-0.5546835 0.4453168,-0.9999999 0.9999999,-0.9999999 H 5.0000006 V 0 Z M 6.0000005,0 V 2.0000001 H 10 V 0 Z M 11,0 v 2.0000001 h 1.000001 C 12.570293,2.0000001 13,2.4297071 13,3 v 2.4999999 h 2 V 3 C 15,1.3554897 13.64451,0 12.000001,0 Z M 8.0000006,3 C 5.7890526,3 4.0000003,4.7890896 4.0000003,6.9999999 V 11 H 8.0000006 C 10.500007,11 12.000001,9.210948 12.000001,6.9999999 12.000001,4.7890896 10.210948,3 8.0000006,3 Z m 0,2.0000001 C 9.1054746,5.0000001 10,5.8945637 10,6.9999999 c 0,1.105474 -0.8945254,2.0000002 -1.9999994,2.0000002 -1.105474,0 -2.0000001,-0.8945262 -2.0000001,-2.0000002 0,-1.1054362 0.8945261,-1.9999998 2.0000001,-1.9999998 z M 1,6.5000002 V 10.5 H 3.0000004 V 6.5000002 Z m 12,0 V 10.5 h 2 V 6.5000002 Z M 1,11.5 V 13 c 0,1.644549 1.3554526,3 3.0000003,3 H 5.0000006 V 13 H 4.0000003 C 3.4453172,13 3.0000004,12.554683 3.0000004,12 v -0.5 z m 12,0 V 12 c 0,0.570331 -0.429707,1 -0.999999,1 H 11 v 3 h 1.000001 C 13.64451,16 15,14.644549 15,13 V 11.5 Z M 6.0000005,13 v 3 H 10 v -3 z" style="marker:none" overflow="visible" fill="#2e3436"/></svg>
diff --git a/data/resources/os-installer.gresource.xml b/data/resources/os-installer.gresource.xml
index 3332510..7ad4e38 100644
--- a/data/resources/os-installer.gresource.xml
+++ b/data/resources/os-installer.gresource.xml
@@ -10,8 +10,9 @@
 
     <!-- Icons -->
     <file preprocess="xml-stripblanks">icon/scalable/actions/globe-symbolic.svg</file>
-    <file preprocess="xml-stripblanks">icon/scalable/actions/question-round-symbolic.svg</file>
     <file preprocess="xml-stripblanks">icon/scalable/actions/language-symbolic.svg</file>
+    <file preprocess="xml-stripblanks">icon/scalable/actions/no-disk-symbolic.svg</file>
+    <file preprocess="xml-stripblanks">icon/scalable/actions/question-round-symbolic.svg</file>
     <file preprocess="xml-stripblanks">icon/scalable/actions/user-symbolic.svg</file>
 
     <!-- UI Files -->
diff --git a/data/resources/ui/pages/disk.blp b/data/resources/ui/pages/disk.blp
index f13fea0..ec60397 100644
--- a/data/resources/ui/pages/disk.blp
+++ b/data/resources/ui/pages/disk.blp
@@ -163,6 +163,15 @@ template DiskPage : Box {
               }
             };
           }
+
+          StackPage {
+            name: "no-disks";
+            child:
+            Adw.StatusPage {
+              title: _("No Disks avaliable");
+              description: _("Connect a disk and reload this page.");
+            };
+          }
         };
       }
     }
diff --git a/src/ui/pages/disk.py b/src/ui/pages/disk.py
index d42aebc..889600e 100644
--- a/src/ui/pages/disk.py
+++ b/src/ui/pages/disk.py
@@ -17,7 +17,9 @@ GIGABYTE_FACTOR = 1024 * 1024 * 1024
 @Gtk.Template(resource_path='/com/github/p3732/os-installer/ui/pages/disk.ui')
 class DiskPage(Gtk.Box, Page):
     __gtype_name__ = __qualname__
-    image_name = 'drive-harddisk-system-symbolic'
+    no_disk_image_name = 'no-disk-symbolic'
+    default_image_name = 'drive-harddisk-system-symbolic'
+    image_name = default_image_name
     can_reload = True
 
     disk_label = Gtk.Template.Child()
@@ -52,8 +54,14 @@ class DiskPage(Gtk.Box, Page):
             disks = disk_provider.get_testing_dummy_disks()
         else:
             disks = disk_provider.get_disks()
-        reset_model(self.disk_list_model, disks)
-        self.list_stack.set_visible_child_name('disks')
+        if len(disks) == 0:
+            self.list_stack.set_visible_child_name('no-disks')
+            self.image_name = self.no_disk_image_name
+        else:
+            reset_model(self.disk_list_model, disks)
+            self.list_stack.set_visible_child_name('disks')
+            self.image_name = self.default_image_name
+        global_state.set_title_image(self.image_name)
 
     def _setup_partition_list(self, disk_info):
         self.current_disk = disk_info
diff --git a/src/util/provider/disk_provider.py b/src/util/provider/disk_provider.py
index 1022f1e..1ad3df5 100644
--- a/src/util/provider/disk_provider.py
+++ b/src/util/provider/disk_provider.py
@@ -114,6 +114,9 @@ class DiskProvider:
         return disks
 
     def get_testing_dummy_disks(self):
+        self.flip = not self.flip if hasattr(self, 'flip') and self.flip else True
+        if self.flip:
+            return []
         smol_partition = DeviceInfo("sm0l partiton", 1000, "/dev/00null")
         smol_disk = Disk("Dummy", 10000, "/dev/null", ([smol_partition], None))