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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 https://mozilla.org/MPL/2.0/. */
#[macro_use]
extern crate lazy_static;
#[macro_use]
extern crate log;
#[macro_use]
extern crate serde;
pub mod resources;
use crossbeam_channel::{Receiver, Sender};
use ipc_channel::ipc::IpcSender;
use keyboard_types::KeyboardEvent;
use msg::constellation_msg::{InputMethodType, TopLevelBrowsingContextId};
use servo_url::ServoUrl;
use std::fmt::{Debug, Error, Formatter};
use style_traits::cursor::CursorKind;
use webrender_api::{DeviceIntPoint, DeviceIntSize};
/// Used to wake up the event loop, provided by the servo port/embedder.
pub trait EventLoopWaker: 'static + Send {
fn clone(&self) -> Box<EventLoopWaker + Send>;
fn wake(&self);
}
/// Sends messages to the embedder.
pub struct EmbedderProxy {
pub sender: Sender<(Option<TopLevelBrowsingContextId>, EmbedderMsg)>,
pub event_loop_waker: Box<EventLoopWaker>,
}
impl EmbedderProxy {
pub fn send(&self, msg: (Option<TopLevelBrowsingContextId>, EmbedderMsg)) {
// Send a message and kick the OS event loop awake.
if let Err(err) = self.sender.send(msg) {
warn!("Failed to send response ({:?}).", err);
}
self.event_loop_waker.wake();
}
}
impl Clone for EmbedderProxy {
fn clone(&self) -> EmbedderProxy {
EmbedderProxy {
sender: self.sender.clone(),
event_loop_waker: self.event_loop_waker.clone(),
}
}
}
/// The port that the embedder receives messages on.
pub struct EmbedderReceiver {
pub receiver: Receiver<(Option<TopLevelBrowsingContextId>, EmbedderMsg)>,
}
impl EmbedderReceiver {
pub fn try_recv_embedder_msg(
&mut self,
) -> Option<(Option<TopLevelBrowsingContextId>, EmbedderMsg)> {
self.receiver.try_recv().ok()
}
pub fn recv_embedder_msg(&mut self) -> (Option<TopLevelBrowsingContextId>, EmbedderMsg) {
self.receiver.recv().unwrap()
}
}
#[derive(Deserialize, Serialize)]
pub enum EmbedderMsg {
/// A status message to be displayed by the browser chrome.
Status(Option<String>),
/// Alerts the embedder that the current page has changed its title.
ChangePageTitle(Option<String>),
/// Move the window to a point
MoveTo(DeviceIntPoint),
/// Resize the window to size
ResizeTo(DeviceIntSize),
// Show an alert message.
Alert(String, IpcSender<()>),
/// Wether or not to follow a link
AllowNavigation(ServoUrl, IpcSender<bool>),
/// Whether or not to allow script to open a new tab/browser
AllowOpeningBrowser(IpcSender<bool>),
/// A new browser was created by script
BrowserCreated(TopLevelBrowsingContextId),
/// Wether or not to unload a document
AllowUnload(IpcSender<bool>),
/// Sends an unconsumed key event back to the embedder.
Keyboard(KeyboardEvent),
/// Changes the cursor.
SetCursor(CursorKind),
/// A favicon was detected
NewFavicon(ServoUrl),
/// <head> tag finished parsing
HeadParsed,
/// The history state has changed.
HistoryChanged(Vec<ServoUrl>, usize),
/// Enter or exit fullscreen
SetFullscreenState(bool),
/// The load of a page has begun
LoadStart,
/// The load of a page has completed
LoadComplete,
/// A browser is to be closed
CloseBrowser,
/// A pipeline panicked. First string is the reason, second one is the backtrace.
Panic(String, Option<String>),
/// Open dialog to select bluetooth device.
GetSelectedBluetoothDevice(Vec<String>, IpcSender<Option<String>>),
/// Open file dialog to select files. Set boolean flag to true allows to select multiple files.
SelectFiles(Vec<FilterPattern>, bool, IpcSender<Option<Vec<String>>>),
/// Request to present an IME to the user when an editable element is focused.
ShowIME(InputMethodType),
/// Request to hide the IME when the editable element is blurred.
HideIME,
/// Servo has shut down
Shutdown,
}
impl Debug for EmbedderMsg {
fn fmt(&self, f: &mut Formatter) -> Result<(), Error> {
match *self {
EmbedderMsg::Status(..) => write!(f, "Status"),
EmbedderMsg::ChangePageTitle(..) => write!(f, "ChangePageTitle"),
EmbedderMsg::MoveTo(..) => write!(f, "MoveTo"),
EmbedderMsg::ResizeTo(..) => write!(f, "ResizeTo"),
EmbedderMsg::Alert(..) => write!(f, "Alert"),
EmbedderMsg::AllowUnload(..) => write!(f, "AllowUnload"),
EmbedderMsg::AllowNavigation(..) => write!(f, "AllowNavigation"),
EmbedderMsg::Keyboard(..) => write!(f, "Keyboard"),
EmbedderMsg::SetCursor(..) => write!(f, "SetCursor"),
EmbedderMsg::NewFavicon(..) => write!(f, "NewFavicon"),
EmbedderMsg::HeadParsed => write!(f, "HeadParsed"),
EmbedderMsg::CloseBrowser => write!(f, "CloseBrowser"),
EmbedderMsg::HistoryChanged(..) => write!(f, "HistoryChanged"),
EmbedderMsg::SetFullscreenState(..) => write!(f, "SetFullscreenState"),
EmbedderMsg::LoadStart => write!(f, "LoadStart"),
EmbedderMsg::LoadComplete => write!(f, "LoadComplete"),
EmbedderMsg::Panic(..) => write!(f, "Panic"),
EmbedderMsg::GetSelectedBluetoothDevice(..) => write!(f, "GetSelectedBluetoothDevice"),
EmbedderMsg::SelectFiles(..) => write!(f, "SelectFiles"),
EmbedderMsg::ShowIME(..) => write!(f, "ShowIME"),
EmbedderMsg::HideIME => write!(f, "HideIME"),
EmbedderMsg::Shutdown => write!(f, "Shutdown"),
EmbedderMsg::AllowOpeningBrowser(..) => write!(f, "AllowOpeningBrowser"),
EmbedderMsg::BrowserCreated(..) => write!(f, "BrowserCreated"),
}
}
}
/// Filter for file selection;
/// the `String` content is expected to be extension (e.g, "doc", without the prefixing ".")
#[derive(Clone, Debug, Deserialize, Serialize)]
pub struct FilterPattern(pub String);
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