Software Center

The Software Center is OSSIM's built-in app store. It displays all discoverable applications, allows browsing by category, and provides install/uninstall functionality with progress simulation.

Core Features

• App Catalog: Displays all apps discovered via AppLauncher::GetAllPossibleApps().
• Category Filtering: Filter apps by category (e.g., "Tools", "Media", "Games", "Office").
• Search Box: Filter apps by name.
• Installed-Only Toggle: Show only currently installed applications.
• Install/Uninstall: Per-user app management with simulated progress bars.
• Detail Pane: Shows selected app's name, description, icon, and install status.

Technical Details

• Controller Class: USoftwareCenterApp (Inherits from UAppBase)
• Widget Class: USoftwareCenterWidget (Slate host, implements IAppContentWidget)
• Window Specs:
  • Initial Size: 1200x700
  • Resizable: true
  • Maximizable: true
• Category: "System"

Install Flow

1. User clicks "Install" on an uninstalled app.
2. InstallationProgress[class] begins animating from 0.0 at 0.4/s in NativeTick (≈2.5s to complete).
3. When progress reaches 1.0, UserSession::InstallApp(class) is called.
4. FUserProfile.InstalledApps is updated and the profile is saved.
5. AppLauncher::OnAppsChanged broadcast triggers:
   • StartMenu::RefreshApps() — App appears in Start Menu.
   • SoftwareCenter::RefreshAppList() — UI updates install status.

Uninstall Flow

Same pattern as install but calls UserSession::UninstallApp(class) and removes the app from InstalledApps.

App Discovery

Apps are discovered through AppLauncher::GetAllPossibleApps():

• Collects all AvailableApps (installed apps)
• Scans the Asset Registry for Blueprint subclasses of UAppBase
• Scans native C++ subclasses of UAppBase
• Deduplicates by category|name, preferring Blueprint over native
• Only lists classes where CDO returns non-null GetContentWidgetClass() and GetWindowChromeClass()

Key State

• SelectedAppClass — Currently selected app in the detail pane.
• ActiveCategoryFilter — Current category filter string.
• InstallationProgress: TMap<UClass*, float> — Per-app install progress.
• IsUninstalling: TMap<UClass*, bool> — Per-app uninstall tracking.

Subscribes to AppLauncher::OnAppsChanged for live updates.

Default Non-Installed Apps

These apps ship with bInstalledByDefault=false and must be installed via the Software Center:

• Mail (Category: Office)
• Minesweeper (Category: Games)