Introduce CategoryManager

data/styles/Category.scss

@@ -18,6 +18,7 @@
     margin: rem(12px);
     padding: rem(12px);
     min-height: 3em;
+    -gtk-icon-size: 48px;
 
     &.accessibility {
         background-image:
@@ -264,22 +265,16 @@
             0 1px 2px #{'alpha(@SLATE_900, 0.2)'},
             0 2px 6px #{'alpha(@SLATE_900, 0.1)'};
 
-        label.pink {
-            font-size: 1em;
-            text-shadow:
-                0 1px 2px #{'alpha(@BUBBLEGUM_900, 0.2)'},
-                0 2px 6px #{'alpha(@BUBBLEGUM_900, 0.1)'};
-            margin-bottom: -12px;
-        }
-
-        label.blue {
+        label {
+            color: #{'@BLUEBERRY_500'};
             font-size: 1.5em;
             text-shadow:
                 0 1px 2px #{'alpha(@BLUEBERRY_900, 0.2)'},
                 0 2px 6px #{'alpha(@BLUEBERRY_900, 0.1)'};
         }
 
         image {
+            color: #{'@SLATE_500'};
             -gtk-icon-size: rem(64px);
         }
     }

po/POTFILES

@@ -3,6 +3,7 @@ src/AsyncMutex.vala
 src/MainWindow.vala
 src/SuspendControl.vala
 src/Utils.vala
+src/Core/CategoryManager.vala
 src/Core/ChangeInformation.vala
 src/Core/FlatpakBackend.vala
 src/Core/Job.vala

src/Core/CategoryManager.vala

@@ -0,0 +1,162 @@
+/*
+ * SPDX-FileCopyrightText: 2025 elementary, Inc. (https://elementary.io)
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ */
+
+public class AppCenter.CategoryManager : Object {
+    public GenericArray<AppStream.Category> categories { get; private set; }
+
+    private static GLib.Once<CategoryManager> instance;
+    public static unowned CategoryManager get_default () {
+        return instance.once (() => { return new CategoryManager (); });
+    }
+
+    private CategoryManager () {}
+
+    construct {
+        categories = new GenericArray<AppStream.Category> ();
+
+        append ("accessories", _("Accessories"), "applications-accessories", {"Utility"});
+        append ("audio", _("Audio"), "appcenter-audio", {"Audio", "Music"});
+
+        append ("communication", _("Communication"), "", {
+            "Chat",
+            "ContactManagement",
+            "Email",
+            "InstantMessaging",
+            "IRCClient",
+            "Telephony",
+            "VideoConference"
+        });
+
+        append ("development", _("Development"), "", {
+            "Database",
+            "Debugger",
+            "Development",
+            "GUIDesigner",
+            "IDE",
+            "RevisionControl",
+            "TerminalEmulator",
+            "WebDevelopment"
+        });
+
+        append ("education", _("Education"), "", {"Education"});
+
+        append ("finance", _("Finance"), "appcenter-finance", {
+            "Economy",
+            "Finance"
+        });
+
+        append ("games", _("Fun & Games"), "appcenter-games-symbolic", {
+            "ActionGame",
+            "AdventureGame",
+            "Amusement",
+            "ArcadeGame",
+            "BlocksGame",
+            "BoardGame",
+            "CardGame",
+            "Game",
+            "KidsGame",
+            "LogicGame",
+            "RolePlaying",
+            "Shooter",
+            "Simulation",
+            "SportsGame",
+            "StrategyGame"
+        });
+
+        append ("graphics", _("Graphics"), "", {
+            "2DGraphics",
+            "3DGraphics",
+            "Graphics",
+            "ImageProcessing",
+            "Photography",
+            "RasterGraphics",
+            "VectorGraphics"
+        });
+
+        append ("internet", _("Internet"), "applications-internet", {
+            "Network",
+            "P2P"
+        });
+
+        append ("science", _("Math, Science, & Engineering"), "", {
+            "ArtificialIntelligence",
+            "Astronomy",
+            "Biology",
+            "Calculator",
+            "Chemistry",
+            "ComputerScience",
+            "DataVisualization",
+            "Electricity",
+            "Electronics",
+            "Engineering",
+            "Geology",
+            "Geoscience",
+            "Math",
+            "NumericalAnalysis",
+            "Physics",
+            "Robotics",
+            "Science"
+        });
+
+        append ("media-production", _("Media Production"), "appcenter-multimedia-symbolic", {
+            "AudioVideoEditing",
+            "Midi",
+            "Mixer",
+            "Recorder",
+            "Sequencer"
+        });
+
+        append ("office", _("Office"), "appcenter-office-symbolic", {
+            "Office",
+            "Presentation",
+            "Publishing",
+            "Spreadsheet",
+            "WordProcessor"
+        });
+
+        append ("system", _("System"), "applications-system", {
+            "Monitor",
+            "System"
+        });
+
+        append ("accessibility", _("Universal Access"), "appcenter-accessibility-symbolic", {"Accessibility"});
+
+        append ("video", _("Video"), "appcenter-video-symbolic", {
+            "Tuner",
+            "TV",
+            "Video"
+        });
+
+        append ("writing-language", _("Writing & Language"), "preferences-desktop-locale", {
+            "Dictionary",
+            "Languages",
+            "Literature",
+            "OCR",
+            "TextEditor",
+            "TextTools",
+            "Translation",
+            "WordProcessor"
+        });
+
+        append ("privacy-security", _("Privacy & Security"), "preferences-system-privacy", {
+            "Security"
+        });
+    }
+
+    private void append (string id, string name, string icon, string[] groups) {
+        var category = new AppStream.Category () {
+            name = name,
+            icon = icon,
+            id = id
+        };
+
+        foreach (unowned var group in groups) {
+            category.add_desktop_group (group);
+        }
+
+        categories.add (category);
+    }
+}