Struct constellation::Constellation

pub struct Constellation<STF, SWF> {

    namespace_receiver: Receiver<Result<PipelineNamespaceRequest, Error>>,
    namespace_ipc_sender: IpcSender<PipelineNamespaceRequest>,
    script_sender: IpcSender<(PipelineId, ScriptMsg)>,
    script_receiver: Receiver<Result<(PipelineId, ScriptMsg), Error>>,
    background_monitor_register: Option<Box<dyn BackgroundHangMonitorRegister>>,
    background_monitor_control_senders: Vec<IpcSender<BackgroundHangMonitorControlMsg>>,
    background_hang_monitor_sender: IpcSender<HangMonitorAlert>,
    background_hang_monitor_receiver: Receiver<Result<HangMonitorAlert, Error>>,
    layout_factory: Arc<dyn LayoutFactory>,
    layout_sender: IpcSender<LayoutMsg>,
    layout_receiver: Receiver<Result<LayoutMsg, Error>>,
    network_listener_sender: Sender<(PipelineId, FetchResponseMsg)>,
    network_listener_receiver: Receiver<(PipelineId, FetchResponseMsg)>,
    compositor_receiver: Receiver<ConstellationMsg>,
    embedder_proxy: EmbedderProxy,
    compositor_proxy: CompositorProxy,
    webviews: WebViewManager<WebView>,
    public_resource_threads: ResourceThreads,
    private_resource_threads: ResourceThreads,
    system_font_service: Arc<SystemFontServiceProxy>,
    devtools_sender: Option<Sender<DevtoolsControlMsg>>,
    bluetooth_ipc_sender: IpcSender<BluetoothRequest>,
    sw_managers: HashMap<ImmutableOrigin, IpcSender<ServiceWorkerMsg>>,
    swmanager_ipc_sender: IpcSender<SWManagerMsg>,
    swmanager_receiver: Receiver<Result<SWManagerMsg, Error>>,
    time_profiler_chan: ProfilerChan,
    mem_profiler_chan: ProfilerChan,
    scheduler_ipc_sender: IpcSender<TimerSchedulerMsg>,
    scheduler_receiver: Receiver<Result<TimerSchedulerMsg, Error>>,
    timer_scheduler: TimerScheduler,
    webrender_document: DocumentId,
    webrender_wgpu: WebrenderWGPU,
    message_ports: HashMap<MessagePortId, MessagePortInfo>,
    message_port_routers: HashMap<MessagePortRouterId, IpcSender<MessagePortMsg>>,
    broadcast_routers: HashMap<BroadcastChannelRouterId, IpcSender<BroadcastMsg>>,
    broadcast_channels: HashMap<ImmutableOrigin, HashMap<String, Vec<BroadcastChannelRouterId>>>,
    pipelines: HashMap<PipelineId, Pipeline>,
    browsing_contexts: HashMap<BrowsingContextId, BrowsingContext>,
    browsing_context_group_set: HashMap<BrowsingContextGroupId, BrowsingContextGroup>,
    browsing_context_group_next_id: u32,
    pending_changes: Vec<SessionHistoryChange>,
    next_pipeline_namespace_id: PipelineNamespaceId,
    window_size: WindowSizeData,
    webdriver: WebDriverData,
    document_states: HashMap<PipelineId, DocumentState>,
    shutting_down: bool,
    handled_warnings: VecDeque<(Option<String>, String)>,
    random_pipeline_closure: Option<(ServoRng, f32)>,
    phantom: PhantomData<(STF, SWF)>,
    webgl_threads: Option<WebGLThreads>,
    webxr_registry: Option<Registry>,
    canvas_sender: Sender<ConstellationCanvasMsg>,
    canvas_ipc_sender: IpcSender<CanvasMsg>,
    pending_approval_navigations: HashMap<PipelineId, (LoadData, NavigationHistoryBehavior)>,
    pressed_mouse_buttons: u16,
    hard_fail: bool,
    enable_canvas_antialiasing: bool,
    glplayer_threads: Option<GLPlayerThreads>,
    player_context: WindowGLContext,
    active_media_session: Option<PipelineId>,
    user_agent: Cow<'static, str>,
}

The Constellation itself. In the servo browser, there is one constellation, which maintains all of the browser global data. In embedded applications, there may be more than one constellation, which are independent of each other.

The constellation may be in a different process from the pipelines, and communicates using IPC.

It is parameterized over a LayoutThreadFactory and a ScriptThreadFactory (which in practice are implemented by LayoutThread in the layout crate, and ScriptThread in the script crate). Script and layout communicate using a Message type.

Fields

namespace_receiver: Receiver<Result<PipelineNamespaceRequest, Error>>

An ipc-sender/threaded-receiver pair to facilitate installing pipeline namespaces in threads via a per-process installer.

namespace_ipc_sender: IpcSender<PipelineNamespaceRequest>

script_sender: IpcSender<(PipelineId, ScriptMsg)>

An IPC channel for script threads to send messages to the constellation. This is the script threads’ view of script_receiver.

script_receiver: Receiver<Result<(PipelineId, ScriptMsg), Error>>

A channel for the constellation to receive messages from script threads. This is the constellation’s view of script_sender.

background_monitor_register: Option<Box<dyn BackgroundHangMonitorRegister>>

A handle to register components for hang monitoring. None when in multiprocess mode.

background_monitor_control_senders: Vec<IpcSender<BackgroundHangMonitorControlMsg>>

Channels to control all background-hang monitors. TODO: store them on the relevant BrowsingContextGroup, so that they could be controlled on a “per-tab/event-loop” basis.

background_hang_monitor_sender: IpcSender<HangMonitorAlert>

A channel for the background hang monitor to send messages to the constellation.

background_hang_monitor_receiver: Receiver<Result<HangMonitorAlert, Error>>

A channel for the constellation to receiver messages from the background hang monitor.

layout_factory: Arc<dyn LayoutFactory>

A factory for creating layouts. This allows customizing the kind of layout created for a Constellation and prevents a circular crate dependency between script and layout.

layout_sender: IpcSender<LayoutMsg>

An IPC channel for layout to send messages to the constellation. This is the layout’s view of layout_receiver.

layout_receiver: Receiver<Result<LayoutMsg, Error>>

A channel for the constellation to receive messages from layout. This is the constellation’s view of layout_sender.

network_listener_sender: Sender<(PipelineId, FetchResponseMsg)>

A channel for network listener to send messages to the constellation.

network_listener_receiver: Receiver<(PipelineId, FetchResponseMsg)>

A channel for the constellation to receive messages from network listener.

compositor_receiver: Receiver<ConstellationMsg>

A channel for the constellation to receive messages from the compositor thread.

embedder_proxy: EmbedderProxy

A channel through which messages can be sent to the embedder.

compositor_proxy: CompositorProxy

A channel (the implementation of which is port-specific) for the constellation to send messages to the compositor thread.

webviews: WebViewManager<WebView>

Bookkeeping data for all webviews in the constellation.

public_resource_threads: ResourceThreads

Channels for the constellation to send messages to the public resource-related threads. There are two groups of resource threads: one for public browsing, and one for private browsing.

private_resource_threads: ResourceThreads

Channels for the constellation to send messages to the private resource-related threads. There are two groups of resource threads: one for public browsing, and one for private browsing.

system_font_service: Arc<SystemFontServiceProxy>

A channel for the constellation to send messages to the font cache thread.

devtools_sender: Option<Sender<DevtoolsControlMsg>>

A channel for the constellation to send messages to the devtools thread.

bluetooth_ipc_sender: IpcSender<BluetoothRequest>

An IPC channel for the constellation to send messages to the bluetooth thread.

sw_managers: HashMap<ImmutableOrigin, IpcSender<ServiceWorkerMsg>>

A map of origin to sender to a Service worker manager.

swmanager_ipc_sender: IpcSender<SWManagerMsg>

An IPC channel for Service Worker Manager threads to send messages to the constellation. This is the SW Manager thread’s view of swmanager_receiver.

swmanager_receiver: Receiver<Result<SWManagerMsg, Error>>

A channel for the constellation to receive messages from the Service Worker Manager thread. This is the constellation’s view of swmanager_sender.

time_profiler_chan: ProfilerChan

A channel for the constellation to send messages to the time profiler thread.

mem_profiler_chan: ProfilerChan

A channel for the constellation to send messages to the memory profiler thread.

scheduler_ipc_sender: IpcSender<TimerSchedulerMsg>

A channel for a pipeline to schedule timer events.

scheduler_receiver: Receiver<Result<TimerSchedulerMsg, Error>>

The receiver to which the IPC requests from scheduler_chan will be forwarded.

timer_scheduler: TimerScheduler

The logic and data behing scheduling timer events.

webrender_document: DocumentId

A single WebRender document the constellation operates on.

webrender_wgpu: WebrenderWGPU

Webrender related objects required by WebGPU threads

message_ports: HashMap<MessagePortId, MessagePortInfo>

A map of message-port Id to info.

message_port_routers: HashMap<MessagePortRouterId, IpcSender<MessagePortMsg>>

A map of router-id to ipc-sender, to route messages to ports.

broadcast_routers: HashMap<BroadcastChannelRouterId, IpcSender<BroadcastMsg>>

A map of broadcast routers to their IPC sender.

broadcast_channels: HashMap<ImmutableOrigin, HashMap<String, Vec<BroadcastChannelRouterId>>>

A map of origin to a map of channel-name to a list of relevant routers.

pipelines: HashMap<PipelineId, Pipeline>

The set of all the pipelines in the browser. (See the pipeline module for more details.)

browsing_contexts: HashMap<BrowsingContextId, BrowsingContext>

The set of all the browsing contexts in the browser.

browsing_context_group_set: HashMap<BrowsingContextGroupId, BrowsingContextGroup>

A user agent holds a a set of browsing context groups.

https://html.spec.whatwg.org/multipage/#browsing-context-group-set

browsing_context_group_next_id: u32

The Id counter for BrowsingContextGroup.

pending_changes: Vec<SessionHistoryChange>

When a navigation is performed, we do not immediately update the session history, instead we ask the event loop to begin loading the new document, and do not update the browsing context until the document is active. Between starting the load and it activating, we store a SessionHistoryChange object for the navigation in progress.

next_pipeline_namespace_id: PipelineNamespaceId

Pipeline IDs are namespaced in order to avoid name collisions, and the namespaces are allocated by the constellation.

window_size: WindowSizeData

The size of the top-level window.

webdriver: WebDriverData

Bits of state used to interact with the webdriver implementation

document_states: HashMap<PipelineId, DocumentState>

Document states for loaded pipelines (used only when writing screenshots).

shutting_down: bool

Are we shutting down?

handled_warnings: VecDeque<(Option<String>, String)>

Have we seen any warnings? Hopefully always empty! The buffer contains (thread_name, reason) entries.

random_pipeline_closure: Option<(ServoRng, f32)>

The random number generator and probability for closing pipelines. This is for testing the hardening of the constellation.

phantom: PhantomData<(STF, SWF)>

Phantom data that keeps the Rust type system happy.

webgl_threads: Option<WebGLThreads>

Entry point to create and get channels to a WebGLThread.

webxr_registry: Option<Registry>

The XR device registry

canvas_sender: Sender<ConstellationCanvasMsg>

A channel through which messages can be sent to the canvas paint thread.

canvas_ipc_sender: IpcSender<CanvasMsg>

pending_approval_navigations: HashMap<PipelineId, (LoadData, NavigationHistoryBehavior)>

Navigation requests from script awaiting approval from the embedder.

pressed_mouse_buttons: u16

Bitmask which indicates which combination of mouse buttons are currently being pressed.

hard_fail: bool

If True, exits on thread failure instead of displaying about:failure

enable_canvas_antialiasing: bool

If set with –disable-canvas-aa, disable antialiasing on the HTML canvas element. Like –disable-text-aa, this is useful for reftests where pixel perfect results are required.

glplayer_threads: Option<GLPlayerThreads>

Entry point to create and get channels to a GLPlayerThread.

player_context: WindowGLContext

Application window’s GL Context for Media player

active_media_session: Option<PipelineId>

Pipeline ID of the active media session.

user_agent: Cow<'static, str>

User agent string to report in network requests.

Implementations

impl<STF, SWF> Constellation<STF, SWF>

where STF: ScriptThreadFactory, SWF: ServiceWorkerManagerFactory,

pub fn start( state: InitialConstellationState, layout_factory: Arc<dyn LayoutFactory>, initial_window_size: WindowSizeData, random_pipeline_closure_probability: Option<f32>, random_pipeline_closure_seed: Option<usize>, hard_fail: bool, enable_canvas_antialiasing: bool, canvas_create_sender: Sender<ConstellationCanvasMsg>, canvas_ipc_sender: IpcSender<CanvasMsg>, ) -> Sender<FromCompositorMsg>

Create a new constellation thread.

fn run(&mut self)

The main event loop for the constellation.

fn next_pipeline_namespace_id(&mut self) -> PipelineNamespaceId

Generate a new pipeline id namespace.

fn next_browsing_context_group_id(&mut self) -> BrowsingContextGroupId

fn get_event_loop( &mut self, host: &Host, top_level_browsing_context_id: &TopLevelBrowsingContextId, opener: &Option<BrowsingContextId>, ) -> Result<Weak<EventLoop>, &'static str>

fn set_event_loop( &mut self, event_loop: Weak<EventLoop>, host: Host, top_level_browsing_context_id: TopLevelBrowsingContextId, opener: Option<BrowsingContextId>, )

fn new_pipeline( &mut self, pipeline_id: PipelineId, browsing_context_id: BrowsingContextId, top_level_browsing_context_id: TopLevelBrowsingContextId, parent_pipeline_id: Option<PipelineId>, opener: Option<BrowsingContextId>, initial_window_size: Size2D<f32, CSSPixel>, load_data: LoadData, sandbox: IFrameSandboxState, is_private: bool, throttled: bool, )

Helper function for creating a pipeline

fn fully_active_descendant_browsing_contexts_iter( &self, browsing_context_id: BrowsingContextId, ) -> FullyActiveBrowsingContextsIterator<'_>

Get an iterator for the fully active browsing contexts in a subtree.

fn fully_active_browsing_contexts_iter( &self, top_level_browsing_context_id: TopLevelBrowsingContextId, ) -> FullyActiveBrowsingContextsIterator<'_>

Get an iterator for the fully active browsing contexts in a tree.

fn all_descendant_browsing_contexts_iter( &self, browsing_context_id: BrowsingContextId, ) -> AllBrowsingContextsIterator<'_>

Get an iterator for the browsing contexts in a subtree.

fn new_browsing_context( &mut self, browsing_context_id: BrowsingContextId, top_level_id: TopLevelBrowsingContextId, pipeline_id: PipelineId, parent_pipeline_id: Option<PipelineId>, size: Size2D<f32, CSSPixel>, is_private: bool, inherited_secure_context: Option<bool>, throttled: bool, )

Create a new browsing context and update the internal bookkeeping.

fn add_pending_change(&mut self, change: SessionHistoryChange)

fn handle_request(&mut self)

Handles loading pages, navigation, and granting access to the compositor

fn handle_request_for_pipeline_namespace( &mut self, request: PipelineNamespaceRequest, )

fn handle_request_from_background_hang_monitor(&self, message: HangMonitorAlert)

fn handle_request_from_network_listener( &mut self, message: (PipelineId, FetchResponseMsg), )

fn handle_request_from_swmanager(&mut self, message: SWManagerMsg)

fn handle_request_from_compositor(&mut self, message: FromCompositorMsg)

fn handle_request_from_script(&mut self, message: (PipelineId, FromScriptMsg))

fn check_origin_against_pipeline( &self, pipeline_id: &PipelineId, origin: &ImmutableOrigin, ) -> Result<(), ()>

Check the origin of a message against that of the pipeline it came from. Note: this is still limited as a security check, see https://github.com/servo/servo/issues/11722

fn handle_schedule_broadcast( &self, pipeline_id: PipelineId, router_id: BroadcastChannelRouterId, message: BroadcastMsg, )

Broadcast a message via routers in various event-loops.

fn handle_remove_broadcast_channel_name_in_router( &mut self, pipeline_id: PipelineId, router_id: BroadcastChannelRouterId, channel_name: String, origin: ImmutableOrigin, )

Remove a channel-name for a given broadcast router.

fn handle_new_broadcast_channel_name_in_router( &mut self, pipeline_id: PipelineId, router_id: BroadcastChannelRouterId, channel_name: String, origin: ImmutableOrigin, )

Note a new channel-name relevant to a given broadcast router.

fn handle_remove_broadcast_channel_router( &mut self, pipeline_id: PipelineId, router_id: BroadcastChannelRouterId, origin: ImmutableOrigin, )

Remove a broadcast router.

fn handle_new_broadcast_channel_router( &mut self, pipeline_id: PipelineId, router_id: BroadcastChannelRouterId, broadcast_ipc_sender: IpcSender<BroadcastMsg>, origin: ImmutableOrigin, )

Add a new broadcast router.

fn handle_wgpu_request( &mut self, source_pipeline_id: PipelineId, browsing_context_id: BrowsingContextId, request: FromScriptMsg, )

fn handle_request_from_layout(&mut self, message: FromLayoutMsg)

fn handle_message_port_transfer_completed( &mut self, router_id: Option<MessagePortRouterId>, ports: Vec<MessagePortId>, )

fn handle_message_port_transfer_failed( &mut self, ports: HashMap<MessagePortId, VecDeque<PortMessageTask>>, )

fn handle_complete_message_port_transfer( &mut self, router_id: MessagePortRouterId, ports: Vec<MessagePortId>, )

fn handle_reroute_messageport( &mut self, port_id: MessagePortId, task: PortMessageTask, )

fn handle_messageport_shipped(&mut self, port_id: MessagePortId)

fn handle_new_messageport_router( &mut self, router_id: MessagePortRouterId, message_port_ipc_sender: IpcSender<MessagePortMsg>, )

fn handle_remove_messageport_router(&mut self, router_id: MessagePortRouterId)

fn handle_new_messageport( &mut self, router_id: MessagePortRouterId, port_id: MessagePortId, )

fn handle_remove_messageport(&mut self, port_id: MessagePortId)

fn handle_entangle_messageports( &mut self, port1: MessagePortId, port2: MessagePortId, )

fn handle_schedule_serviceworker_job( &mut self, pipeline_id: PipelineId, job: Job, )

https://w3c.github.io/ServiceWorker/#schedule-job-algorithm and https://w3c.github.io/ServiceWorker/#dfn-job-queue

The Job Queue is essentially the channel to a SW manager, which are scoped per origin.

fn handle_broadcast_storage_event( &self, pipeline_id: PipelineId, storage: StorageType, url: ServoUrl, key: Option<String>, old_value: Option<String>, new_value: Option<String>, )

fn handle_exit(&mut self)

fn handle_shutdown(&mut self)

fn handle_pipeline_exited(&mut self, pipeline_id: PipelineId)

fn handle_send_error(&mut self, pipeline_id: PipelineId, err: IpcError)

fn handle_panic( &mut self, top_level_browsing_context_id: Option<TopLevelBrowsingContextId>, reason: String, backtrace: Option<String>, )

fn handle_focus_web_view( &mut self, top_level_browsing_context_id: TopLevelBrowsingContextId, )

fn handle_log_entry( &mut self, top_level_browsing_context_id: Option<TopLevelBrowsingContextId>, thread_name: Option<String>, entry: LogEntry, )

fn forward_event( &mut self, destination_pipeline_id: PipelineId, event: CompositorEvent, )

fn handle_new_top_level_browsing_context( &mut self, url: ServoUrl, top_level_browsing_context_id: TopLevelBrowsingContextId, response_sender: Option<IpcSender<LoadStatus>>, )

fn handle_close_top_level_browsing_context( &mut self, top_level_browsing_context_id: TopLevelBrowsingContextId, )

fn handle_iframe_size_msg(&mut self, iframe_sizes: Vec<IFrameSizeMsg>)

fn handle_subframe_loaded(&mut self, pipeline_id: PipelineId)

fn handle_navigate_request( &self, id: PipelineId, request_builder: RequestBuilder, cancel_chan: IpcReceiver<()>, )

fn handle_script_loaded_url_in_iframe_msg( &mut self, load_info: IFrameLoadInfoWithData, )

fn handle_script_new_iframe(&mut self, load_info: IFrameLoadInfoWithData)

fn handle_script_new_auxiliary( &mut self, load_info: AuxiliaryBrowsingContextLoadInfo, )

fn handle_pending_paint_metric(&self, pipeline_id: PipelineId, epoch: Epoch)

fn handle_set_cursor_msg(&mut self, cursor: Cursor)

fn handle_change_running_animations_state( &mut self, pipeline_id: PipelineId, animation_state: AnimationState, )

fn handle_tick_animation( &mut self, pipeline_id: PipelineId, tick_type: AnimationTickType, )

fn schedule_navigation( &mut self, top_level_browsing_context_id: TopLevelBrowsingContextId, source_id: PipelineId, load_data: LoadData, history_handling: NavigationHistoryBehavior, )

Schedule a navigation(via load_url). 1: Ask the embedder for permission. 2: Store the details of the navigation, pending approval from the embedder.

fn load_url( &mut self, top_level_browsing_context_id: TopLevelBrowsingContextId, source_id: PipelineId, load_data: LoadData, history_handling: NavigationHistoryBehavior, ) -> Option<PipelineId>

fn handle_abort_load_url_msg(&mut self, new_pipeline_id: PipelineId)

fn handle_load_complete_msg( &mut self, top_level_browsing_context_id: TopLevelBrowsingContextId, pipeline_id: PipelineId, )

fn handle_navigated_to_fragment( &mut self, pipeline_id: PipelineId, new_url: ServoUrl, history_handling: NavigationHistoryBehavior, )

fn handle_traverse_history_msg( &mut self, top_level_browsing_context_id: TopLevelBrowsingContextId, direction: TraversalDirection, )

fn update_browsing_context( &mut self, browsing_context_id: BrowsingContextId, new_reloader: NeedsToReload, )

fn update_pipeline( &mut self, pipeline_id: PipelineId, history_state_id: Option<HistoryStateId>, url: ServoUrl, )

fn handle_joint_session_history_length( &self, top_level_browsing_context_id: TopLevelBrowsingContextId, response_sender: IpcSender<u32>, )

fn handle_push_history_state_msg( &mut self, pipeline_id: PipelineId, history_state_id: HistoryStateId, url: ServoUrl, )

fn handle_replace_history_state_msg( &mut self, pipeline_id: PipelineId, history_state_id: HistoryStateId, url: ServoUrl, )

fn handle_ime_dismissed(&mut self)

fn handle_ime_msg(&mut self, event: CompositionEvent)

fn handle_key_msg(&mut self, event: KeyboardEvent)

fn handle_reload_msg( &mut self, top_level_browsing_context_id: TopLevelBrowsingContextId, )

fn handle_post_message_msg( &mut self, browsing_context_id: BrowsingContextId, source_pipeline: PipelineId, origin: Option<ImmutableOrigin>, source_origin: ImmutableOrigin, data: StructuredSerializedData, )

fn handle_get_pipeline( &mut self, browsing_context_id: BrowsingContextId, response_sender: IpcSender<Option<PipelineId>>, )

fn handle_get_browsing_context( &mut self, pipeline_id: PipelineId, response_sender: IpcSender<Option<BrowsingContextId>>, )

fn handle_focus_msg(&mut self, pipeline_id: PipelineId)

fn focus_parent_pipeline(&mut self, browsing_context_id: BrowsingContextId)

fn handle_remove_iframe_msg( &mut self, browsing_context_id: BrowsingContextId, ) -> Vec<PipelineId>

fn handle_set_throttled_complete( &mut self, pipeline_id: PipelineId, throttled: bool, )

fn handle_create_canvas_paint_thread_msg( &mut self, size: UntypedSize2D<u64>, response_sender: IpcSender<(IpcSender<CanvasMsg>, CanvasId)>, )

fn handle_webdriver_msg(&mut self, msg: WebDriverCommandMsg)

fn set_webview_throttled(&mut self, webview_id: WebViewId, throttled: bool)

fn notify_history_changed( &self, top_level_browsing_context_id: TopLevelBrowsingContextId, )

fn load_url_for_webdriver( &mut self, top_level_browsing_context_id: TopLevelBrowsingContextId, load_data: LoadData, response_sender: IpcSender<LoadStatus>, history_handling: NavigationHistoryBehavior, )

fn change_session_history(&mut self, change: SessionHistoryChange)

fn focused_browsing_context_is_descendant_of( &self, browsing_context_id: BrowsingContextId, ) -> bool

fn trim_history( &mut self, top_level_browsing_context_id: TopLevelBrowsingContextId, )

fn handle_activate_document_msg(&mut self, pipeline_id: PipelineId)

fn handle_window_size_msg( &mut self, top_level_browsing_context_id: TopLevelBrowsingContextId, new_size: WindowSizeData, size_type: WindowSizeType, )

Called when the window is resized.

fn handle_exit_fullscreen_msg( &mut self, top_level_browsing_context_id: TopLevelBrowsingContextId, )

Called when the window exits from fullscreen mode

fn handle_is_ready_to_save_image( &mut self, pipeline_states: HashMap<PipelineId, Epoch>, ) -> ReadyToSave

Checks the state of all script and layout pipelines to see if they are idle and compares the current layout state to what the compositor has. This is used to check if the output image is “stable” and can be written as a screenshot for reftests. Since this function is only used in reftests, we do not harden it against panic.

fn get_activity(&self, pipeline_id: PipelineId) -> DocumentActivity

Get the current activity of a pipeline.

fn set_activity(&self, pipeline_id: PipelineId, activity: DocumentActivity)

Set the current activity of a pipeline.

fn update_activity(&self, pipeline_id: PipelineId)

Update the current activity of a pipeline.

fn resize_browsing_context( &mut self, new_size: WindowSizeData, size_type: WindowSizeType, browsing_context_id: BrowsingContextId, )

Handle updating the size of a browsing context. This notifies every pipeline in the context of the new size.

fn handle_theme_change(&mut self, theme: Theme)

Handle theme change events from the embedder and forward them to the script thread

fn switch_fullscreen_mode(&mut self, browsing_context_id: BrowsingContextId)

fn close_browsing_context( &mut self, browsing_context_id: BrowsingContextId, exit_mode: ExitPipelineMode, ) -> Option<BrowsingContext>

fn close_browsing_context_children( &mut self, browsing_context_id: BrowsingContextId, dbc: DiscardBrowsingContext, exit_mode: ExitPipelineMode, )

fn handle_discard_document( &mut self, top_level_browsing_context_id: TopLevelBrowsingContextId, pipeline_id: PipelineId, )

fn unload_document(&self, pipeline_id: PipelineId)

fn close_pipeline( &mut self, pipeline_id: PipelineId, dbc: DiscardBrowsingContext, exit_mode: ExitPipelineMode, )

fn maybe_close_random_pipeline(&mut self)

fn get_joint_session_history( &mut self, top_level_id: TopLevelBrowsingContextId, ) -> &mut JointSessionHistory

fn browsing_context_to_sendable( &self, browsing_context_id: BrowsingContextId, ) -> Option<SendableFrameTree>

fn update_webview_in_compositor(&mut self, webview_id: WebViewId)

Send the frame tree for the given webview to the compositor.

fn handle_media_session_action_msg(&mut self, action: MediaSessionActionType)

fn handle_gamepad_msg(&mut self, event: GamepadEvent)

Handle GamepadEvents from the embedder and forward them to the script thread