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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use AnimationState;
use DocumentState;
use IFrameLoadInfo;
use MouseButton;
use MouseEventType;
use MozBrowserEvent;
use canvas_traits::CanvasMsg;
use euclid::point::Point2D;
use euclid::size::Size2D;
use gfx_traits::LayerId;
use ipc_channel::ipc::IpcSender;
use msg::constellation_msg::{Key, KeyModifiers, KeyState, LoadData};
use msg::constellation_msg::{NavigationDirection, PipelineId, SubpageId};
use offscreen_gl_context::{GLContextAttributes, GLLimits};
use style_traits::cursor::Cursor;
use style_traits::viewport::ViewportConstraints;
use url::Url;
/// Messages from the layout to the constellation.
#[derive(Deserialize, Serialize)]
pub enum LayoutMsg {
/// Indicates whether this pipeline is currently running animations.
ChangeRunningAnimationsState(PipelineId, AnimationState),
/// Requests that the constellation inform the compositor of the a cursor change.
SetCursor(Cursor),
/// Notifies the constellation that the viewport has been constrained in some manner
ViewportConstrained(PipelineId, ViewportConstraints),
}
/// Whether a DOM event was prevented by web content
#[derive(Deserialize, Serialize)]
pub enum EventResult {
/// Allowed by web content
DefaultAllowed,
/// Prevented by web content
DefaultPrevented,
}
/// Messages from the script to the constellation.
#[derive(Deserialize, Serialize)]
pub enum ScriptMsg {
/// Indicates whether this pipeline is currently running animations.
ChangeRunningAnimationsState(PipelineId, AnimationState),
/// Requests that a new 2D canvas thread be created. (This is done in the constellation because
/// 2D canvases may use the GPU and we don't want to give untrusted content access to the GPU.)
CreateCanvasPaintThread(Size2D<i32>, IpcSender<IpcSender<CanvasMsg>>),
/// Requests that a new WebGL thread be created. (This is done in the constellation because
/// WebGL uses the GPU and we don't want to give untrusted content access to the GPU.)
CreateWebGLPaintThread(Size2D<i32>,
GLContextAttributes,
IpcSender<Result<(IpcSender<CanvasMsg>, GLLimits), String>>),
/// Dispatched after the DOM load event has fired on a document
/// Causes a `load` event to be dispatched to any enclosing frame context element
/// for the given pipeline.
DOMLoad(PipelineId),
/// Notifies the constellation that this frame has received focus.
Focus(PipelineId),
/// Re-send a mouse button event that was sent to the parent window.
ForwardMouseButtonEvent(PipelineId, MouseEventType, MouseButton, Point2D<f32>),
/// Re-send a mouse move event that was sent to the parent window.
ForwardMouseMoveEvent(PipelineId, Point2D<f32>),
/// Requests that the constellation retrieve the current contents of the clipboard
GetClipboardContents(IpcSender<String>),
/// <head> tag finished parsing
HeadParsed,
/// All pending loads are complete.
LoadComplete(PipelineId),
/// A new load has been requested.
LoadUrl(PipelineId, LoadData),
/// Dispatch a mozbrowser event to a given iframe. Only available in experimental mode.
MozBrowserEvent(PipelineId, SubpageId, MozBrowserEvent),
/// HTMLIFrameElement Forward or Back navigation.
Navigate(Option<(PipelineId, SubpageId)>, NavigationDirection),
/// Favicon detected
NewFavicon(Url),
/// Status message to be displayed in the chrome, eg. a link URL on mouseover.
NodeStatus(Option<String>),
/// Notification that this iframe should be removed.
RemoveIFrame(PipelineId, Option<IpcSender<()>>),
/// A load has been requested in an IFrame.
ScriptLoadedURLInIFrame(IFrameLoadInfo),
/// Requests that the constellation set the contents of the clipboard
SetClipboardContents(String),
/// Mark a new document as active
ActivateDocument(PipelineId),
/// Set the document state for a pipeline (used by screenshot / reftests)
SetDocumentState(PipelineId, DocumentState),
/// Update the pipeline Url, which can change after redirections.
SetFinalUrl(PipelineId, Url),
/// Check if an alert dialog box should be presented
Alert(PipelineId, String, IpcSender<bool>),
/// Scroll a page in a window
ScrollFragmentPoint(PipelineId, LayerId, Point2D<f32>, bool),
/// Set title of current page
/// https://html.spec.whatwg.org/multipage/#document.title
SetTitle(PipelineId, Option<String>),
/// Send a key event
SendKeyEvent(Key, KeyState, KeyModifiers),
/// Get Window Informations size and position
GetClientWindow(IpcSender<(Size2D<u32>, Point2D<i32>)>),
/// Move the window to a point
MoveTo(Point2D<i32>),
/// Resize the window to size
ResizeTo(Size2D<u32>),
/// Script has handled a touch event, and either prevented or allowed default actions.
TouchEventProcessed(EventResult),
/// Get Scroll Offset
GetScrollOffset(PipelineId, LayerId, IpcSender<Point2D<f32>>),
/// Notifies the constellation that this pipeline has exited.
PipelineExited(PipelineId),
/// Requests that the compositor shut down.
Exit,
}
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