Struct constellation::pipeline::InitialPipelineState

pub struct InitialPipelineState {

    pub id: PipelineId,
    pub browsing_context_id: BrowsingContextId,
    pub top_level_browsing_context_id: TopLevelBrowsingContextId,
    pub parent_pipeline_id: Option<PipelineId>,
    pub opener: Option<BrowsingContextId>,
    pub script_to_constellation_chan: ScriptToConstellationChan,
    pub namespace_request_sender: IpcSender<PipelineNamespaceRequest>,
    pub background_monitor_register: Option<Box<dyn BackgroundHangMonitorRegister>>,
    pub background_hang_monitor_to_constellation_chan: IpcSender<HangMonitorAlert>,
    pub layout_to_constellation_chan: IpcSender<LayoutMsg>,
    pub layout_factory: Arc<dyn LayoutFactory>,
    pub scheduler_chan: IpcSender<TimerSchedulerMsg>,
    pub compositor_proxy: CompositorProxy,
    pub devtools_sender: Option<Sender<DevtoolsControlMsg>>,
    pub bluetooth_thread: IpcSender<BluetoothRequest>,
    pub swmanager_thread: IpcSender<SWManagerMsg>,
    pub system_font_service: Arc<SystemFontServiceProxy>,
    pub resource_threads: ResourceThreads,
    pub time_profiler_chan: ProfilerChan,
    pub mem_profiler_chan: ProfilerChan,
    pub window_size: WindowSizeData,
    pub pipeline_namespace_id: PipelineNamespaceId,
    pub event_loop: Option<Rc<EventLoop>>,
    pub load_data: LoadData,
    pub prev_throttled: bool,
    pub webrender_document: DocumentId,
    pub webgl_chan: Option<WebGLPipeline>,
    pub webxr_registry: Option<Registry>,
    pub player_context: WindowGLContext,
    pub user_agent: Cow<'static, str>,
}

Initial setup data needed to construct a pipeline.

DO NOT add any Senders to this unless you absolutely know what you’re doing, or pcwalton will have to rewrite your code. Use IPC senders instead.

Fields

id: PipelineId

The ID of the pipeline to create.

browsing_context_id: BrowsingContextId

The ID of the browsing context that contains this Pipeline.

top_level_browsing_context_id: TopLevelBrowsingContextId

The ID of the top-level browsing context that contains this Pipeline.

parent_pipeline_id: Option<PipelineId>

The ID of the parent pipeline and frame type, if any. If None, this is the root.

opener: Option<BrowsingContextId>

script_to_constellation_chan: ScriptToConstellationChan

A channel to the associated constellation.

namespace_request_sender: IpcSender<PipelineNamespaceRequest>

A sender to request pipeline namespace ids.

background_monitor_register: Option<Box<dyn BackgroundHangMonitorRegister>>

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

background_hang_monitor_to_constellation_chan: IpcSender<HangMonitorAlert>

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

layout_to_constellation_chan: IpcSender<LayoutMsg>

A channel for the layout to send messages to the constellation.

layout_factory: Arc<dyn LayoutFactory>

A fatory for creating layouts to be used by the ScriptThread.

scheduler_chan: IpcSender<TimerSchedulerMsg>

A channel to schedule timer events.

compositor_proxy: CompositorProxy

A channel to the compositor.

devtools_sender: Option<Sender<DevtoolsControlMsg>>

A channel to the developer tools, if applicable.

bluetooth_thread: IpcSender<BluetoothRequest>

A channel to the bluetooth thread.

swmanager_thread: IpcSender<SWManagerMsg>

A channel to the service worker manager thread

system_font_service: Arc<SystemFontServiceProxy>

A proxy to the system font service, responsible for managing the list of system fonts.

resource_threads: ResourceThreads

Channels to the resource-related threads.

time_profiler_chan: ProfilerChan

A channel to the time profiler thread.

mem_profiler_chan: ProfilerChan

A channel to the memory profiler thread.

window_size: WindowSizeData

Information about the initial window size.

pipeline_namespace_id: PipelineNamespaceId

The ID of the pipeline namespace for this script thread.

event_loop: Option<Rc<EventLoop>>

The event loop to run in, if applicable.

load_data: LoadData

Information about the page to load.

prev_throttled: bool

Whether the browsing context in which pipeline is embedded is throttled, using less resources by stopping animations and running timers at a heavily limited rate. This field is only used to notify script and compositor threads after spawning a pipeline.

webrender_document: DocumentId

The ID of the document processed by this script thread.

webgl_chan: Option<WebGLPipeline>

A channel to the WebGL thread.

webxr_registry: Option<Registry>

The XR device registry

player_context: WindowGLContext

Application window’s GL Context for Media player

user_agent: Cow<'static, str>

User agent string to report in network requests.