Dynamic Visibility

When enabled: true the toolbar will be displayed if one of the following conditions are satisfied:

• the webview has back history
• the forward button is enabled in the configuration and the webview has forward history
• the refresh button is enabled in configuration

When enabled: false the toolbar will be hidden regardless of any other condition

// Show the contextual navigation toolbar, if conditions are met
median.ios.contextualNavToolbar.set({"enabled":true});
// Hide the contextual navigation toolbar
median.ios.contextualNavToolbar.set({"enabled":false});