Struct ViewportManager 

pub struct ViewportManager { /* private fields */ }

Manages viewport and device emulation

Implementations

impl ViewportManager

pub fn new(client: Arc<CdpClient>) -> Self

Create a new viewport manager

pub async fn set_device_metrics(&self, config: &ViewportConfig) -> Result<()>

Set device metrics override (emulate a specific device viewport)

pub async fn clear_device_metrics(&self) -> Result<()>

Clear device metrics override (restore default viewport)

pub async fn set_touch_emulation(&self, enabled: bool) -> Result<()>

Set touch emulation

pub async fn set_user_agent( &self, user_agent: &str, accept_language: Option<&str>, ) -> Result<()>

Set user agent override

pub async fn set_geolocation( &self, latitude: f64, longitude: f64, accuracy: Option<f64>, ) -> Result<()>

Set geolocation override

pub async fn clear_geolocation(&self) -> Result<()>

Clear geolocation override

pub async fn set_timezone(&self, timezone_id: &str) -> Result<()>

Set timezone override

pub async fn set_media_features( &self, media_type: Option<&str>, features: Vec<MediaFeature>, ) -> Result<()>

Set emulated media features (prefers-color-scheme, prefers-reduced-motion, etc.)

pub async fn clear_media_features(&self) -> Result<()>

Clear emulated media (restore defaults)

pub async fn set_color_scheme(&self, scheme: ColorScheme) -> Result<()>

Set color scheme (convenience wrapper for prefers-color-scheme)

pub async fn set_vision_deficiency( &self, deficiency: VisionDeficiency, ) -> Result<()>

Set vision deficiency emulation for accessibility testing

pub async fn set_locale(&self, locale: &str) -> Result<()>

Set locale override (affects navigator.language and date formatting)

pub async fn clear_locale(&self) -> Result<()>

Clear locale override (restore system default)

pub async fn override_languages_and_fonts( &self, languages: Vec<String>, font_families: Option<Vec<String>>, ) -> Result<()>

Override navigator.languages and optionally font-family lists via JS. This ensures font rendering consistency across environments.

pub async fn preset_device(&self, preset: &DevicePreset) -> Result<()>

Apply a device preset (viewport + user agent + touch in one call)

pub async fn get_metrics(&self) -> Result<DeviceMetrics>

Get current device metrics via JavaScript

Trait Implementations

impl Clone for ViewportManager

fn clone(&self) -> ViewportManager

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ViewportManager

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.