# Windows System Settings Handler

This gets/sets settings using the same back-end used by the Windows System Settings.

A [helper application](../../../settingsHelper) is used to perform the actual work. This needs to be performed in a
separate process because it must be run as a 64-bit process.

## Payload

The payload for this settings handler looks like this:
```json
{
  "settings": {
    "settingId": {
      "value": "the-value"
    },
    "another-settingId": {
      "value": "the-value"
    }
  }
}
```

The settingId identifies the setting. See [/settingsHelper/README.md](../../../settingsHelper/README.md) about that.
Only settings of types `Boolean`, `String`, `List`, `LabeledString`, and `Range` can be altered using this handler.

## Example solution settings block

```json
{
    "settingsHandlers": {
        "configure": {
            "type": "gpii.windows.systemSettingsHandler",
            "capabilities": [
                "example.bluelight"
            ],
            "capabilitiesTransformations": {
                "SystemSettings_Display_BlueLight_ManualToggleQuickAction": {
                    "transform": {
                        "type": "fluid.transforms.value",
                        "inputPath": "example.bluelight",
                        "outputPath": "value"
                    }
                }
            }
        }
    }
}
```

## Quick test, to prove it works

Replace the sticky keys solution with this, then login as [vicky](https://github.com/GPII/universal/blob/master/testData/preferences/vicky.json):

(this makes the sticky keys preference enable the on screen keyboard)

```javascript

    "com.microsoft.windows.stickyKeys": {
        "name": "Windows StickyKeys",
        "contexts": {
            "OS": [
                {
                    "id": "win32",
                    "version": ">=5.0"
                }
            ]
        },
        // this block is the only change
        "settingsHandlers": {
            "configure": {
                "type": "gpii.windows.systemSettingsHandler",
                "capabilities": [
                    "http://registry\\.gpii\\.net/common/stickyKeys"
                ],
                "capabilitiesTransformations": {
                    "SystemSettings_Accessibility_Keyboard_IsOSKEnabled": {
                        "transform": {
                            "type": "fluid.transforms.value",
                            "inputPath": "http://registry\\.gpii\\.net/common/stickyKeys",
                            "outputPath": "value"
                        }
                    }
                }
            }
        },
        "update": [
          "configure"
        ],
        "configure": [
            "settings.configure"
        ],
        "restore": [
            "settings.configure"
        ],
        "isInstalled": [
            {
                "type": "gpii.deviceReporter.alwaysInstalled"
            }
        ]
    },

```