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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/. */
//! The high-level interface from script to constellation. Using this abstract interface helps
//! reduce coupling between these two components.
use geom::rect::Rect;
use geom::size::TypedSize2D;
use geom::scale_factor::ScaleFactor;
use hyper::header::Headers;
use hyper::method::Method;
use layers::geometry::DevicePixel;
use util::cursor::Cursor;
use util::geometry::{PagePx, ViewportPx};
use std::sync::mpsc::{channel, Sender, Receiver};
use url::Url;
#[derive(Clone)]
pub struct ConstellationChan(pub Sender<Msg>);
impl ConstellationChan {
pub fn new() -> (Receiver<Msg>, ConstellationChan) {
let (chan, port) = channel();
(port, ConstellationChan(chan))
}
}
#[derive(PartialEq, Eq, Copy)]
pub enum IFrameSandboxState {
IFrameSandboxed,
IFrameUnsandboxed
}
// We pass this info to various tasks, so it lives in a separate, cloneable struct.
#[derive(Clone, Copy)]
pub struct Failure {
pub pipeline_id: PipelineId,
pub parent: Option<(PipelineId, SubpageId)>,
}
#[derive(Copy)]
pub struct WindowSizeData {
/// The size of the initial layout viewport, before parsing an
/// http://www.w3.org/TR/css-device-adapt/#initial-viewport
pub initial_viewport: TypedSize2D<ViewportPx, f32>,
/// The "viewing area" in page px. See `PagePx` documentation for details.
pub visible_viewport: TypedSize2D<PagePx, f32>,
/// The resolution of the window in dppx, not including any "pinch zoom" factor.
pub device_pixel_ratio: ScaleFactor<ViewportPx, DevicePixel, f32>,
}
#[derive(PartialEq, Eq, Copy, Clone)]
pub enum KeyState {
Pressed,
Released,
Repeated,
}
//N.B. Based on the glutin key enum
#[derive(Debug, PartialEq, Eq, Copy, Clone)]
pub enum Key {
Space,
Apostrophe,
Comma,
Minus,
Period,
Slash,
Num0,
Num1,
Num2,
Num3,
Num4,
Num5,
Num6,
Num7,
Num8,
Num9,
Semicolon,
Equal,
A,
B,
C,
D,
E,
F,
G,
H,
I,
J,
K,
L,
M,
N,
O,
P,
Q,
R,
S,
T,
U,
V,
W,
X,
Y,
Z,
LeftBracket,
Backslash,
RightBracket,
GraveAccent,
World1,
World2,
Escape,
Enter,
Tab,
Backspace,
Insert,
Delete,
Right,
Left,
Down,
Up,
PageUp,
PageDown,
Home,
End,
CapsLock,
ScrollLock,
NumLock,
PrintScreen,
Pause,
F1,
F2,
F3,
F4,
F5,
F6,
F7,
F8,
F9,
F10,
F11,
F12,
F13,
F14,
F15,
F16,
F17,
F18,
F19,
F20,
F21,
F22,
F23,
F24,
F25,
Kp0,
Kp1,
Kp2,
Kp3,
Kp4,
Kp5,
Kp6,
Kp7,
Kp8,
Kp9,
KpDecimal,
KpDivide,
KpMultiply,
KpSubtract,
KpAdd,
KpEnter,
KpEqual,
LeftShift,
LeftControl,
LeftAlt,
LeftSuper,
RightShift,
RightControl,
RightAlt,
RightSuper,
Menu,
}
bitflags! {
flags KeyModifiers: u8 {
const SHIFT = 0x01,
const CONTROL = 0x02,
const ALT = 0x04,
const SUPER = 0x08,
}
}
/// Messages from the compositor and script to the constellation.
pub enum Msg {
Exit,
Failure(Failure),
InitLoadUrl(Url),
LoadComplete,
FrameRect(PipelineId, SubpageId, Rect<f32>),
LoadUrl(PipelineId, LoadData),
ScriptLoadedURLInIFrame(Url, PipelineId, SubpageId, Option<SubpageId>, IFrameSandboxState),
Navigate(NavigationDirection),
PainterReady(PipelineId),
ResizedWindow(WindowSizeData),
KeyEvent(Key, KeyState, KeyModifiers),
/// Requests that the constellation inform the compositor of the title of the pipeline
/// immediately.
GetPipelineTitle(PipelineId),
/// Requests that the constellation inform the compositor of the a cursor change.
SetCursor(Cursor),
}
/// Similar to net::resource_task::LoadData
/// can be passed to LoadUrl to load a page with GET/POST
/// parameters or headers
#[derive(Clone)]
pub struct LoadData {
pub url: Url,
pub method: Method,
pub headers: Headers,
pub data: Option<Vec<u8>>,
}
impl LoadData {
pub fn new(url: Url) -> LoadData {
LoadData {
url: url,
method: Method::Get,
headers: Headers::new(),
data: None,
}
}
}
/// Represents the two different ways to which a page can be navigated
#[derive(Clone, PartialEq, Eq, Copy, Hash, Debug)]
pub enum NavigationType {
Load, // entered or clicked on a url
Navigate, // browser forward/back buttons
}
#[derive(Clone, PartialEq, Eq, Copy, Hash, Debug)]
pub enum NavigationDirection {
Forward,
Back,
}
#[derive(Clone, PartialEq, Eq, Copy, Hash, Debug)]
pub struct PipelineId(pub uint);
#[derive(Clone, PartialEq, Eq, Copy, Hash, Debug)]
pub struct SubpageId(pub uint);
// The type of pipeline exit. During complete shutdowns, pipelines do not have to
// release resources automatically released on process termination.
#[derive(Copy)]
pub enum PipelineExitType {
PipelineOnly,
Complete,
}
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