fix: issue with Theme property empty for MATLAB without new desktop

.env

@@ -1 +1 @@
-MAG_DATA_VISUALIZATION_VERSION=7.1.3
+MAG_DATA_VISUALIZATION_VERSION=7.1.4

app/core/+mag/+app/+internal/SelectMissionDialog.m

@@ -58,7 +58,7 @@ function instantiate(this)
             this.GridLayout.ColumnWidth = ["1x", "2x", "1x"];
             this.GridLayout.RowHeight = ["2x", "1x", "2x"];
 
-            if isprop(this.Parent, "Theme") && isequal(this.Parent.Theme.BaseColorStyle, "dark")
+            if mag.internal.isThemeable(this.Parent) && isequal(this.Parent.Theme.BaseColorStyle, "dark")
                 this.GridLayout.BackgroundColor = 0.02 * ones(1, 3);
             else
                 this.GridLayout.BackgroundColor = 0.98 * ones(1, 3);

app/core/+mag/+app/+manage/ToolbarManager.m

@@ -29,7 +29,7 @@ function instantiate(this, parent)
             % Create Toolbar.
             this.Toolbar = uitoolbar(parent);
 
-            if isprop(parent, "Theme")
+            if mag.internal.isThemeable(parent)
                 theme = parent.Theme.BaseColorStyle;
             else
                 theme = "light";

resources/release-notes.md

@@ -1,8 +1,3 @@
-# App
-
-- Fix Bartington figures not being registered by app when generated
-
 # Software
 
-- Add sorting and removal of zeroed-out vectors for Bartington analysis processing
-- Bartington field figures are also called "Bartington...", instead of "Field..."
+- Fix issue with `Theme` property empty for MATLAB without new desktop

src/utility/+mag/+internal/isThemeable.m

@@ -0,0 +1,14 @@
+function value = isThemeable(figure)
+% ISTHEMEABLE Determine whether figure is themeable (i.e., if setting
+% dark/light mode is supported).
+
+    arguments (Input)
+        figure (1, 1) matlab.ui.Figure
+    end
+
+    arguments (Output)
+        value (1, 1) logical
+    end
+
+    value = isprop(figure, "Theme") && isa(figure.Theme, "matlab.graphics.theme.GraphicsTheme");
+end

src/visualize/+mag/+graphics/+factory/DefaultFactory.m

@@ -34,7 +34,7 @@
             f = figure(Name = options.Name, NumberTitle = "off", WindowState = options.WindowState, Visible = "off");
             setVisibility = onCleanup(@() set(f, Visible = matlab.lang.OnOffSwitchState(options.Visible)));
 
-            if isprop(f, "Theme")
+            if mag.internal.isThemeable(f)
                 f.Theme = options.Theme;
             else
                 warning("Theme ""%s"" cannot be applied.", options.Theme);