# NavigationHelpButtonViewModel

#### new Cesium.NavigationHelpButtonViewModel()
Widgets/NavigationHelpButton/NavigationHelpButtonViewModel.js 9

The view model for `NavigationHelpButton`.

### Members

#### command : Command
Widgets/NavigationHelpButton/NavigationHelpButtonViewModel.js 47

Gets the Command that is executed when the button is clicked.

#### showClick : Command
Widgets/NavigationHelpButton/NavigationHelpButtonViewModel.js 59

Gets the Command that is executed when the mouse instructions should be shown.

#### showInstructions : Boolean
Widgets/NavigationHelpButton/NavigationHelpButtonViewModel.js 15

Gets or sets whether the instructions are currently shown. This property is observable.

Default Value: `false`

#### showTouch : Command
Widgets/NavigationHelpButton/NavigationHelpButtonViewModel.js 71

Gets the Command that is executed when the touch instructions should be shown.

#### tooltip : String
Widgets/NavigationHelpButton/NavigationHelpButtonViewModel.js 35

Gets or sets the tooltip. This property is observable.