Auto merge of #11364 - Ms2ger:CompositorMsg, r=nox

Move CompositorMsg to script_traits.

Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data:
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy --faster` does not report any errors
- [ ] These changes fix #__ (github issue number if applicable).

Either:
- [ ] There are tests for these changes OR
- [x] These changes do not require tests because refactoring

Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process.

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components/compositing/compositor.rs

@@ -2,9 +2,7 @@
  * 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 AnimationTickType;
 use CompositionPipeline;
-use CompositorMsg as ConstellationMsg;
 use SendableFrameTree;
 use app_units::Au;
 use compositor_layer::{CompositorData, CompositorLayer, RcCompositorLayer, WantsScrollEventsFlag};
@@ -37,8 +35,9 @@ use msg::constellation_msg::{WindowSizeData, WindowSizeType};
 use profile_traits::mem::{self, ReportKind, Reporter, ReporterRequest};
 use profile_traits::time::{self, ProfilerCategory, profile};
 use script_traits::CompositorEvent::{MouseMoveEvent, MouseButtonEvent, TouchEvent};
-use script_traits::{AnimationState, ConstellationControlMsg, LayoutControlMsg};
-use script_traits::{MouseButton, MouseEventType, TouchpadPressurePhase, TouchEventType, TouchId};
+use script_traits::{AnimationState, AnimationTickType, ConstellationControlMsg};
+use script_traits::{ConstellationMsg, LayoutControlMsg, MouseButton};
+use script_traits::{MouseEventType, TouchpadPressurePhase, TouchEventType, TouchId};
 use std::collections::hash_map::Entry::{Occupied, Vacant};
 use std::collections::{HashMap, HashSet};
 use std::fs::File;

components/compositing/compositor_thread.rs

@@ -4,7 +4,6 @@
 
 //! Communication with the compositor thread.
 
-use CompositorMsg as ConstellationMsg;
 use SendableFrameTree;
 use compositor::{self, CompositingReason};
 use euclid::point::Point2D;
@@ -16,7 +15,7 @@ use layers::platform::surface::{NativeDisplay, NativeSurface};
 use msg::constellation_msg::{Image, Key, KeyModifiers, KeyState, PipelineId};
 use profile_traits::mem;
 use profile_traits::time;
-use script_traits::{AnimationState, EventResult, ScriptToCompositorMsg};
+use script_traits::{AnimationState, ConstellationMsg, EventResult, ScriptToCompositorMsg};
 use std::fmt::{Debug, Error, Formatter};
 use std::rc::Rc;
 use std::sync::mpsc::{Receiver, Sender, channel};

components/compositing/lib.rs

@@ -29,7 +29,6 @@ extern crate net_traits;
 #[macro_use]
 extern crate profile_traits;
 extern crate script_traits;
-extern crate serde;
 extern crate style_traits;
 extern crate time;
 extern crate url;
@@ -39,18 +38,13 @@ extern crate webrender;
 extern crate webrender_traits;
 
 pub use compositor_thread::{CompositorEventListener, CompositorProxy, CompositorThread};
-use euclid::size::{Size2D, TypedSize2D};
+use euclid::size::TypedSize2D;
 use gfx::paint_thread::ChromeToPaintMsg;
-use gfx_traits::Epoch;
 use ipc_channel::ipc::{IpcSender};
 use layout_traits::LayoutControlChan;
-use msg::constellation_msg::{FrameId, Key, KeyState, KeyModifiers, LoadData};
-use msg::constellation_msg::{NavigationDirection, PipelineId, SubpageId};
-use msg::constellation_msg::{WebDriverCommandMsg, WindowSizeData, WindowSizeType};
+use msg::constellation_msg::PipelineId;
 use script_traits::ConstellationControlMsg;
-use std::collections::HashMap;
 use std::sync::mpsc::Sender;
-use url::Url;
 use util::geometry::PagePx;
 
 mod compositor;
@@ -61,41 +55,6 @@ mod surface_map;
 mod touch;
 pub mod windowing;
 
-/// Specifies whether the script or layout thread needs to be ticked for animation.
-#[derive(Deserialize, Serialize)]
-pub enum AnimationTickType {
-    Script,
-    Layout,
-}
-
-/// Messages from the compositor to the constellation.
-#[derive(Deserialize, Serialize)]
-pub enum CompositorMsg {
-    Exit,
-    FrameSize(PipelineId, Size2D<f32>),
-    /// Request that the constellation send the FrameId corresponding to the document
-    /// with the provided pipeline id
-    GetFrame(PipelineId, IpcSender<Option<FrameId>>),
-    /// Request that the constellation send the current pipeline id for the provided frame
-    /// id, or for the root frame if this is None, over a provided channel.
-    /// Also returns a boolean saying whether the document has finished loading or not.
-    GetPipeline(Option<FrameId>, IpcSender<Option<(PipelineId, bool)>>),
-    /// Requests that the constellation inform the compositor of the title of the pipeline
-    /// immediately.
-    GetPipelineTitle(PipelineId),
-    InitLoadUrl(Url),
-    /// Query the constellation to see if the current compositor output is stable
-    IsReadyToSaveImage(HashMap<PipelineId, Epoch>),
-    KeyEvent(Key, KeyState, KeyModifiers),
-    LoadUrl(PipelineId, LoadData),
-    Navigate(Option<(PipelineId, SubpageId)>, NavigationDirection),
-    WindowSize(WindowSizeData, WindowSizeType),
-    /// Requests that the constellation instruct layout to begin a new tick of the animation.
-    TickAnimation(PipelineId, AnimationTickType),
-    /// Dispatch a webdriver command
-    WebDriverCommand(WebDriverCommandMsg),
-}
-
 pub struct SendableFrameTree {
     pub pipeline: CompositionPipeline,
     pub size: Option<TypedSize2D<PagePx, f32>>,

components/constellation/constellation.rs

@@ -13,10 +13,9 @@ use canvas::canvas_paint_thread::CanvasPaintThread;
 use canvas::webgl_paint_thread::WebGLPaintThread;
 use canvas_traits::CanvasMsg;
 use clipboard::ClipboardContext;
-use compositing::CompositorMsg as FromCompositorMsg;
+use compositing::SendableFrameTree;
 use compositing::compositor_thread::CompositorProxy;
 use compositing::compositor_thread::Msg as ToCompositorMsg;
-use compositing::{AnimationTickType, SendableFrameTree};
 use devtools_traits::{ChromeToDevtoolsControlMsg, DevtoolsControlMsg};
 use euclid::scale_factor::ScaleFactor;
 use euclid::size::{Size2D, TypedSize2D};
@@ -49,7 +48,8 @@ use profile_traits::time;
 use rand::{random, Rng, SeedableRng, StdRng};
 #[cfg(not(target_os = "windows"))]
 use sandboxing::content_process_sandbox_profile;
-use script_traits::{AnimationState, CompositorEvent, ConstellationControlMsg};
+use script_traits::{AnimationState, AnimationTickType, CompositorEvent};
+use script_traits::{ConstellationControlMsg, ConstellationMsg as FromCompositorMsg};
 use script_traits::{DocumentState, LayoutControlMsg};
 use script_traits::{IFrameLoadInfo, IFrameSandboxState, TimerEventRequest};
 use script_traits::{LayoutMsg as FromLayoutMsg, ScriptMsg as FromScriptMsg, ScriptThreadFactory};

components/script_traits/lib.rs

@@ -41,9 +41,10 @@ use gfx_traits::Epoch;
 use gfx_traits::LayerId;
 use ipc_channel::ipc::{IpcReceiver, IpcSender};
 use libc::c_void;
-use msg::constellation_msg::{Key, KeyModifiers, KeyState, LoadData};
-use msg::constellation_msg::{PanicMsg, PipelineId, PipelineNamespaceId};
-use msg::constellation_msg::{SubpageId, WindowSizeData, WindowSizeType};
+use msg::constellation_msg::{FrameId, Key, KeyModifiers, KeyState, LoadData};
+use msg::constellation_msg::{NavigationDirection, PanicMsg, PipelineId};
+use msg::constellation_msg::{PipelineNamespaceId, SubpageId, WindowSizeData};
+use msg::constellation_msg::{WebDriverCommandMsg, WindowSizeType};
 use msg::webdriver_msg::WebDriverScriptCommand;
 use net_traits::ResourceThreads;
 use net_traits::bluetooth_thread::BluetoothMethodMsg;
@@ -51,6 +52,8 @@ use net_traits::image_cache_thread::ImageCacheThread;
 use net_traits::response::HttpsState;
 use profile_traits::mem;
 use std::any::Any;
+use std::collections::HashMap;
+use url::Url;
 use util::ipc::OptionalOpaqueIpcSender;
 
 pub use script_msg::{LayoutMsg, ScriptMsg};
@@ -491,3 +494,47 @@ impl MozBrowserErrorType {
         }
     }
 }
+
+/// Specifies whether the script or layout thread needs to be ticked for animation.
+#[derive(Deserialize, Serialize)]
+pub enum AnimationTickType {
+    /// The script thread.
+    Script,
+    /// The layout thread.
+    Layout,
+}
+
+/// Messages to the constellation.
+#[derive(Deserialize, Serialize)]
+pub enum ConstellationMsg {
+    /// Exit the constellation.
+    Exit,
+    /// Inform the constellation of the size of the viewport.
+    FrameSize(PipelineId, Size2D<f32>),
+    /// Request that the constellation send the FrameId corresponding to the document
+    /// with the provided pipeline id
+    GetFrame(PipelineId, IpcSender<Option<FrameId>>),
+    /// Request that the constellation send the current pipeline id for the provided frame
+    /// id, or for the root frame if this is None, over a provided channel.
+    /// Also returns a boolean saying whether the document has finished loading or not.
+    GetPipeline(Option<FrameId>, IpcSender<Option<(PipelineId, bool)>>),
+    /// Requests that the constellation inform the compositor of the title of the pipeline
+    /// immediately.
+    GetPipelineTitle(PipelineId),
+    /// Request to load the initial page.
+    InitLoadUrl(Url),
+    /// Query the constellation to see if the current compositor output is stable
+    IsReadyToSaveImage(HashMap<PipelineId, Epoch>),
+    /// Inform the constellation of a key event.
+    KeyEvent(Key, KeyState, KeyModifiers),
+    /// Request to load a page.
+    LoadUrl(PipelineId, LoadData),
+    /// Request to navigate a frame.
+    Navigate(Option<(PipelineId, SubpageId)>, NavigationDirection),
+    /// Inform the constellation of a window being resized.
+    WindowSize(WindowSizeData, WindowSizeType),
+    /// Requests that the constellation instruct layout to begin a new tick of the animation.
+    TickAnimation(PipelineId, AnimationTickType),
+    /// Dispatch a webdriver command
+    WebDriverCommand(WebDriverCommandMsg),
+}

components/servo/Cargo.lock

@@ -2480,7 +2480,6 @@ dependencies = [
 name = "webdriver_server"
 version = "0.0.1"
 dependencies = [
- "compositing 0.0.1",
  "euclid 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.9.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "image 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2490,6 +2489,7 @@ dependencies = [
  "plugins 0.0.1",
  "regex 0.1.71 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "script_traits 0.0.1",
  "url 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "util 0.0.1",
  "uuid 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",

components/servo/lib.rs

@@ -58,7 +58,6 @@ fn webdriver(port: u16, constellation: Sender<ConstellationMsg>) {
 fn webdriver(_port: u16, _constellation: Sender<ConstellationMsg>) { }
 
 use compositing::CompositorEventListener;
-use compositing::CompositorMsg as ConstellationMsg;
 use compositing::compositor_thread::InitialCompositorState;
 use compositing::windowing::WindowEvent;
 use compositing::windowing::WindowMethods;
@@ -79,6 +78,7 @@ use profile::mem as profile_mem;
 use profile::time as profile_time;
 use profile_traits::mem;
 use profile_traits::time;
+use script_traits::ConstellationMsg;
 use std::rc::Rc;
 use std::sync::mpsc::Sender;
 use util::resource_files::resources_dir_path;

components/webdriver_server/Cargo.toml

@@ -9,7 +9,6 @@ name = "webdriver_server"
 path = "lib.rs"
 
 [dependencies]
-compositing = {path = "../compositing"}
 msg = {path = "../msg"}
 plugins = {path = "../plugins"}
 util = {path = "../util"}
@@ -20,6 +19,7 @@ log = "0.3.5"
 hyper = "0.9"
 rustc-serialize = "0.3.4"
 regex = "0.1.55"
+script_traits = {path = "../script_traits"}
 url = {version = "1.0.0", features = ["heap_size"]}
 uuid = { version = "0.2", features = ["v4"] }
 webdriver = "0.9"

components/webdriver_server/lib.rs

@@ -10,7 +10,6 @@
 
 #![deny(unsafe_code)]
 
-extern crate compositing;
 extern crate euclid;
 extern crate hyper;
 extern crate image;
@@ -18,6 +17,7 @@ extern crate ipc_channel;
 extern crate msg;
 extern crate regex;
 extern crate rustc_serialize;
+extern crate script_traits;
 extern crate url;
 extern crate util;
 extern crate uuid;
@@ -25,7 +25,6 @@ extern crate webdriver;
 
 mod keys;
 
-use compositing::CompositorMsg as ConstellationMsg;
 use euclid::Size2D;
 use hyper::method::Method::{self, Post};
 use image::{DynamicImage, ImageFormat, RgbImage};
@@ -37,6 +36,7 @@ use msg::webdriver_msg::{LoadStatus, WebDriverFrameId, WebDriverJSError, WebDriv
 use regex::Captures;
 use rustc_serialize::base64::{CharacterSet, Config, Newline, ToBase64};
 use rustc_serialize::json::{Json, ToJson};
+use script_traits::ConstellationMsg;
 use std::borrow::ToOwned;
 use std::collections::BTreeMap;
 use std::net::{SocketAddr, SocketAddrV4};