Add new system scan codes (#316)

Closes #304

shared/src/components/popover/tab/keypress/keypress-tab.component.ts

@@ -195,7 +195,8 @@ export class KeypressTabComponent extends Tab implements OnChanges {
     }
 
     private findScancodeOptionByScancode(scancode: number, type: KeystrokeType): Select2OptionData {
-        const typeToFind: string = type === KeystrokeType.shortMedia || KeystrokeType.longMedia ? 'media' : KeystrokeType[type];
+        const typeToFind: string =
+            (type === KeystrokeType.shortMedia || type === KeystrokeType.longMedia) ? 'media' : KeystrokeType[type];
         return this.findScancodeOptionBy((option: Select2OptionData) => {
             const additional = option.additional;
             if (additional && additional.scancode === scancode && additional.type === typeToFind) {

shared/src/components/popover/tab/keypress/scancodes.json

@@ -654,5 +654,34 @@
                 }
             }
         ]
+    },
+    {
+        "text": "System Keys",
+        "children": [
+            {
+                "id": "139",
+                "text": "Power Down",
+                "additional": {
+                    "type": "system",
+                    "scancode": 129
+                }
+            },
+            {
+                "id": "140",
+                "text": "Sleep",
+                "additional": {
+                    "type": "system",
+                    "scancode": 130
+                }
+            },
+            {
+                "id": "141",
+                "text": "Wake Up",
+                "additional": {
+                    "type": "system",
+                    "scancode": 131
+                }
+            }
+        ]
     }
 ]