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https://github.com/servo/servo.git
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Cargoify servo
This commit is contained in:
Jack Moffitt
parent
db2f642c32
commit
c6ab60dbfc
1761 changed files with 8423 additions and 2294 deletions
287
components/script/dom/eventtarget.rs
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287
components/script/dom/eventtarget.rs
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use dom::bindings::callback::CallbackContainer;
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use dom::bindings::codegen::Bindings::EventHandlerBinding::EventHandlerNonNull;
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use dom::bindings::codegen::Bindings::EventListenerBinding::EventListener;
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use dom::bindings::codegen::Bindings::EventTargetBinding::EventTargetMethods;
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use dom::bindings::error::{Fallible, InvalidState, report_pending_exception};
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use dom::bindings::js::JSRef;
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use dom::bindings::trace::Traceable;
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use dom::bindings::utils::{Reflectable, Reflector};
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use dom::event::Event;
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use dom::eventdispatcher::dispatch_event;
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use dom::node::NodeTypeId;
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use dom::workerglobalscope::WorkerGlobalScopeId;
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use dom::xmlhttprequest::XMLHttpRequestId;
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use dom::virtualmethods::VirtualMethods;
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use js::jsapi::{JS_CompileUCFunction, JS_GetFunctionObject, JS_CloneFunctionObject};
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use js::jsapi::{JSContext, JSObject};
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use servo_util::str::DOMString;
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use libc::{c_char, size_t};
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use std::cell::RefCell;
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use std::ptr;
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use url::Url;
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use std::collections::hashmap::HashMap;
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#[deriving(PartialEq,Encodable)]
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pub enum ListenerPhase {
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Capturing,
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Bubbling,
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}
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#[deriving(PartialEq,Encodable)]
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pub enum EventTargetTypeId {
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NodeTargetTypeId(NodeTypeId),
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WindowTypeId,
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WorkerTypeId,
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WorkerGlobalScopeTypeId(WorkerGlobalScopeId),
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XMLHttpRequestTargetTypeId(XMLHttpRequestId)
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}
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#[deriving(PartialEq, Encodable)]
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pub enum EventListenerType {
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Additive(EventListener),
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Inline(EventListener),
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}
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impl EventListenerType {
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fn get_listener(&self) -> EventListener {
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match *self {
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Additive(listener) | Inline(listener) => listener
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}
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}
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}
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#[deriving(PartialEq,Encodable)]
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pub struct EventListenerEntry {
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pub phase: ListenerPhase,
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pub listener: EventListenerType
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}
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#[deriving(Encodable)]
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pub struct EventTarget {
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pub type_id: EventTargetTypeId,
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reflector_: Reflector,
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handlers: Traceable<RefCell<HashMap<DOMString, Vec<EventListenerEntry>>>>,
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}
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impl EventTarget {
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pub fn new_inherited(type_id: EventTargetTypeId) -> EventTarget {
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EventTarget {
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type_id: type_id,
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reflector_: Reflector::new(),
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handlers: Traceable::new(RefCell::new(HashMap::new())),
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}
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}
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pub fn get_listeners(&self, type_: &str) -> Option<Vec<EventListener>> {
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self.handlers.deref().borrow().find_equiv(&type_).map(|listeners| {
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listeners.iter().map(|entry| entry.listener.get_listener()).collect()
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})
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}
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pub fn get_listeners_for(&self, type_: &str, desired_phase: ListenerPhase)
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-> Option<Vec<EventListener>> {
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self.handlers.deref().borrow().find_equiv(&type_).map(|listeners| {
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let filtered = listeners.iter().filter(|entry| entry.phase == desired_phase);
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filtered.map(|entry| entry.listener.get_listener()).collect()
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})
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}
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}
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pub trait EventTargetHelpers {
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fn dispatch_event_with_target<'a>(&self,
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target: Option<JSRef<'a, EventTarget>>,
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event: &JSRef<Event>) -> Fallible<bool>;
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fn set_inline_event_listener(&self,
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ty: DOMString,
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listener: Option<EventListener>);
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fn get_inline_event_listener(&self, ty: DOMString) -> Option<EventListener>;
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fn set_event_handler_uncompiled(&self,
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cx: *mut JSContext,
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url: Url,
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scope: *mut JSObject,
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ty: &str,
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source: DOMString);
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fn set_event_handler_common<T: CallbackContainer>(&self, ty: &str,
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listener: Option<T>);
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fn get_event_handler_common<T: CallbackContainer>(&self, ty: &str) -> Option<T>;
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fn has_handlers(&self) -> bool;
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}
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impl<'a> EventTargetHelpers for JSRef<'a, EventTarget> {
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fn dispatch_event_with_target<'b>(&self,
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target: Option<JSRef<'b, EventTarget>>,
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event: &JSRef<Event>) -> Fallible<bool> {
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if event.deref().dispatching.deref().get() || !event.deref().initialized.deref().get() {
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return Err(InvalidState);
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}
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Ok(dispatch_event(self, target, event))
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}
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fn set_inline_event_listener(&self,
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ty: DOMString,
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listener: Option<EventListener>) {
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let mut handlers = self.handlers.deref().borrow_mut();
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let entries = handlers.find_or_insert_with(ty, |_| vec!());
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let idx = entries.iter().position(|&entry| {
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match entry.listener {
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Inline(_) => true,
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_ => false,
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}
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});
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match idx {
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Some(idx) => {
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match listener {
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Some(listener) => entries.get_mut(idx).listener = Inline(listener),
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None => {
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entries.remove(idx);
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}
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}
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}
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None => {
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if listener.is_some() {
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entries.push(EventListenerEntry {
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phase: Bubbling,
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listener: Inline(listener.unwrap()),
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});
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}
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}
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}
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}
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fn get_inline_event_listener(&self, ty: DOMString) -> Option<EventListener> {
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let handlers = self.handlers.deref().borrow();
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let entries = handlers.find(&ty);
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entries.and_then(|entries| entries.iter().find(|entry| {
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match entry.listener {
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Inline(_) => true,
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_ => false,
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}
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}).map(|entry| entry.listener.get_listener()))
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}
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fn set_event_handler_uncompiled(&self,
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cx: *mut JSContext,
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url: Url,
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scope: *mut JSObject,
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ty: &str,
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source: DOMString) {
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let url = url.serialize().to_c_str();
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let name = ty.to_c_str();
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let lineno = 0; //XXXjdm need to get a real number here
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let nargs = 1; //XXXjdm not true for onerror
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static arg_name: [c_char, ..6] =
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['e' as c_char, 'v' as c_char, 'e' as c_char, 'n' as c_char, 't' as c_char, 0];
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static arg_names: [*const c_char, ..1] = [&arg_name as *const c_char];
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let source: Vec<u16> = source.as_slice().utf16_units().collect();
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let handler = unsafe {
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JS_CompileUCFunction(cx,
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ptr::mut_null(),
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name.as_ptr(),
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nargs,
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&arg_names as *const *const i8 as *mut *const i8,
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source.as_ptr(),
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source.len() as size_t,
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url.as_ptr(),
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lineno)
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};
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if handler.is_null() {
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report_pending_exception(cx, self.reflector().get_jsobject());
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return;
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}
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let funobj = unsafe {
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JS_CloneFunctionObject(cx, JS_GetFunctionObject(handler), scope)
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};
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assert!(funobj.is_not_null());
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self.set_event_handler_common(ty, Some(EventHandlerNonNull::new(funobj)));
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}
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fn set_event_handler_common<T: CallbackContainer>(
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&self, ty: &str, listener: Option<T>)
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{
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let event_listener = listener.map(|listener|
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EventListener::new(listener.callback()));
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self.set_inline_event_listener(ty.to_string(), event_listener);
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}
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fn get_event_handler_common<T: CallbackContainer>(&self, ty: &str) -> Option<T> {
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let listener = self.get_inline_event_listener(ty.to_string());
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listener.map(|listener| CallbackContainer::new(listener.parent.callback()))
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}
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fn has_handlers(&self) -> bool {
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!self.handlers.deref().borrow().is_empty()
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}
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}
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impl<'a> EventTargetMethods for JSRef<'a, EventTarget> {
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fn AddEventListener(&self,
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ty: DOMString,
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listener: Option<EventListener>,
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capture: bool) {
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match listener {
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Some(listener) => {
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let mut handlers = self.handlers.deref().borrow_mut();
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let entry = handlers.find_or_insert_with(ty, |_| vec!());
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let phase = if capture { Capturing } else { Bubbling };
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let new_entry = EventListenerEntry {
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phase: phase,
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listener: Additive(listener)
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};
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if entry.as_slice().position_elem(&new_entry).is_none() {
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entry.push(new_entry);
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}
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},
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_ => (),
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}
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}
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fn RemoveEventListener(&self,
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ty: DOMString,
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listener: Option<EventListener>,
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capture: bool) {
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match listener {
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Some(listener) => {
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let mut handlers = self.handlers.deref().borrow_mut();
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let mut entry = handlers.find_mut(&ty);
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for entry in entry.mut_iter() {
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let phase = if capture { Capturing } else { Bubbling };
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let old_entry = EventListenerEntry {
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phase: phase,
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listener: Additive(listener)
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};
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let position = entry.as_slice().position_elem(&old_entry);
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for &position in position.iter() {
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entry.remove(position);
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}
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}
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},
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_ => (),
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}
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}
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fn DispatchEvent(&self, event: &JSRef<Event>) -> Fallible<bool> {
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self.dispatch_event_with_target(None, event)
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}
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}
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impl Reflectable for EventTarget {
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fn reflector<'a>(&'a self) -> &'a Reflector {
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&self.reflector_
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}
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}
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impl<'a> VirtualMethods for JSRef<'a, EventTarget> {
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fn super_type<'a>(&'a self) -> Option<&'a VirtualMethods> {
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None
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}
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}
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