Application Manager - /usr/dt/appconfig/appmanager
```
### Audio Feedback
The Application Manager plays audio feedback:
* **Window Open**: Plays window open sound via `AudioManager.windowOpen()`
* **Window Close**: Plays window close sound via `AudioManager.windowClose()`
**Audio Integration**: `appmanager.ts:38-40`
```typescript theme={null}
if (window.AudioManager) {
window.AudioManager.windowOpen();
}
```
## Implementation Details
### AppManager Class
The Application Manager is implemented as a class in `appmanager.ts`:
Initializes the AppManager and binds the menu button listener
Private method that attaches click event to `.cde-menu-btn`
Opens the Application Manager window, centers it, and plays audio
Closes the Application Manager window and plays close audio
**Class Definition**: `appmanager.ts:4-52`
```typescript theme={null}
export class AppManager {
private id = 'appManager';
constructor() {
this.init();
}
public open(): void {
const win = document.getElementById(this.id);
if (win) {
win.style.display = 'flex';
win.style.zIndex = '10000';
requestAnimationFrame(() => {
WindowManager.centerWindow(win);
if (window.focusWindow) {
window.focusWindow(this.id);
}
});
}
}
}
```
### Lazy Loading
Many applications use lazy loading via the `moduleLoader`:
* Applications are loaded on-demand when first opened
* Stub functions are exposed globally until the real module loads
* This improves initial page load performance
**Panel Stub Initialization**: `panel.ts:42-53`
```typescript theme={null}
(window as any).appManager = appManagerStub;
(window as any).TerminalLab = createStub('terminal', 'TerminalLab');
(window as any).CalendarManager = createStub('calendar', 'CalendarManager', 'init');
(window as any).ManViewer = createStub('manviewer', 'ManViewer');
(window as any).Netscape = createStub('netscape', 'Netscape');
(window as any).Lynx = createStub('lynx', 'Lynx');
```
The first time you launch an application, there may be a brief loading delay as the module is fetched and initialized. Subsequent opens will be instant.
## Keyboard Shortcuts
| Action | Shortcut |
| ------------------------- | -------------------- |
| Close Application Manager | `Escape` or `Ctrl+W` |
| Minimize | `Ctrl+M` |
Individual applications have their own keyboard shortcuts once opened. See the Keyboard Shortcuts guide for a complete reference.
## Design Philosophy
The Application Manager follows CDE's application folder paradigm:
* **Central Location**: All applications accessible from one place
* **Visual Icons**: Recognizable icons for each application
* **Path Display**: Authentic CDE path in titlebar (`/usr/dt/appconfig/appmanager`)
* **Object Count**: Status bar shows total application count
* **Auto-Close**: Manager closes after launching an app to reduce clutter
The Application Manager replicates the CDE Application Manager functionality, which was the standard way to launch applications in the Common Desktop Environment on Unix workstations.
## Related Features
Browse documentation for all 14 applications available in the Application Manager
Learn keyboard shortcuts for launching applications directly
Understanding window operations and the modal window system
Tips for organizing and using the front panel effectively