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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 dom::bindings::codegen::Bindings::NodeIteratorBinding;
use dom::bindings::codegen::Bindings::NodeIteratorBinding::NodeIteratorMethods;
use dom::bindings::codegen::Bindings::NodeFilterBinding::NodeFilter;
use dom::bindings::error::Fallible;
use dom::bindings::global::GlobalRef;
use dom::bindings::js::{JS, JSRef, Temporary};
use dom::bindings::js::MutNullableJS;
use dom::bindings::utils::{Reflector, reflect_dom_object};
use dom::document::{Document, DocumentHelpers};
use dom::node::{Node};
use std::default::Default;
#[dom_struct]
pub struct NodeIterator {
reflector_: Reflector,
root_node: JS<Node>,
reference_node: MutNullableJS<Node>,
what_to_show: u32,
filter: Filter
}
impl NodeIterator {
fn new_inherited(root_node: JSRef<Node>,
what_to_show: u32,
filter: Filter) -> NodeIterator {
NodeIterator {
reflector_: Reflector::new(),
root_node: JS::from_rooted(root_node),
reference_node: Default::default(),
what_to_show: what_to_show,
filter: filter
}
}
pub fn new_with_filter(document: JSRef<Document>,
root_node: JSRef<Node>,
what_to_show: u32,
filter: Filter) -> Temporary<NodeIterator> {
let window = document.window().root();
reflect_dom_object(box NodeIterator::new_inherited(root_node, what_to_show, filter),
GlobalRef::Window(window.r()),
NodeIteratorBinding::Wrap)
}
pub fn new(document: JSRef<Document>,
root_node: JSRef<Node>,
what_to_show: u32,
node_filter: Option<NodeFilter>) -> Temporary<NodeIterator> {
let filter = match node_filter {
None => Filter::None,
Some(jsfilter) => Filter::JS(jsfilter)
};
NodeIterator::new_with_filter(document, root_node, what_to_show, filter)
}
}
impl<'a> NodeIteratorMethods for JSRef<'a, NodeIterator> {
// https://dom.spec.whatwg.org/#dom-nodeiterator-root
fn Root(self) -> Temporary<Node> {
Temporary::new(self.root_node)
}
// https://dom.spec.whatwg.org/#dom-nodeiterator-whattoshow
fn WhatToShow(self) -> u32 {
self.what_to_show
}
// https://dom.spec.whatwg.org/#dom-nodeiterator-filter
fn GetFilter(self) -> Option<NodeFilter> {
match self.filter {
Filter::None => None,
Filter::JS(nf) => Some(nf),
Filter::Native(_) => panic!("Cannot convert native node filter to DOM NodeFilter")
}
}
// https://dom.spec.whatwg.org/#dom-nodeiterator-referencenode
fn GetReferenceNode(self) -> Option<Temporary<Node>> {
self.reference_node.get()
}
// https://dom.spec.whatwg.org/#dom-nodeiterator-previousnode
fn PreviousNode(self) -> Fallible<Option<Temporary<Node>>> {
self.prev_node()
}
// https://dom.spec.whatwg.org/#dom-nodeiterator-nextnode
fn NextNode(self) -> Fallible<Option<Temporary<Node>>> {
self.next_node()
}
}
/*
trait PrivateNodeIteratorHelpers {
//fn accept_node(self, node: JSRef<Node>) -> Fallible<u16>;
}
*/
pub trait NodeIteratorHelpers {
fn next_node(self) -> Fallible<Option<Temporary<Node>>>;
fn prev_node(self) -> Fallible<Option<Temporary<Node>>>;
}
impl<'a> NodeIteratorHelpers for JSRef<'a, NodeIterator> {
// https://dom.spec.whatwg.org/#dom-nodeiterator-nextnode
fn next_node(self) -> Fallible<Option<Temporary<Node>>> {
Ok(None)
}
// https://dom.spec.whatwg.org/#dom-nodeiterator-previousnode
fn prev_node(self) -> Fallible<Option<Temporary<Node>>> {
Ok(None)
}
}
#[jstraceable]
pub enum Filter {
None,
Native(fn (node: JSRef<Node>) -> u16),
JS(NodeFilter)
}
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