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6b75078503
This should make it somewhat easier to experiment with alternative representations in the future. To reduce churn, this commit leaves the String field public, though. Also, this will allow us to use the default String type to represent the IDL USVString type, which explicitly forbids unpaired surrogates, ans as such is a better match to the Rust String type.
93 lines
3.2 KiB
Rust
93 lines
3.2 KiB
Rust
/* 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::codegen::Bindings::CharacterDataBinding::CharacterDataMethods;
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use dom::bindings::codegen::Bindings::DocumentBinding::DocumentMethods;
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use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
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use dom::bindings::codegen::Bindings::TextBinding::{self, TextMethods};
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use dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
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use dom::bindings::error::{Error, Fallible};
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use dom::bindings::global::GlobalRef;
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use dom::bindings::inheritance::Castable;
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use dom::bindings::js::Root;
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use dom::bindings::js::{RootedReference};
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use dom::characterdata::CharacterData;
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use dom::document::Document;
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use dom::node::Node;
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use util::str::DOMString;
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/// An HTML text node.
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#[dom_struct]
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pub struct Text {
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characterdata: CharacterData,
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}
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impl Text {
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fn new_inherited(text: DOMString, document: &Document) -> Text {
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Text {
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characterdata: CharacterData::new_inherited(text, document)
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}
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}
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pub fn new(text: DOMString, document: &Document) -> Root<Text> {
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Node::reflect_node(box Text::new_inherited(text, document),
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document, TextBinding::Wrap)
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}
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pub fn Constructor(global: GlobalRef, text: DOMString) -> Fallible<Root<Text>> {
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let document = global.as_window().Document();
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Ok(Text::new(text, document.r()))
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}
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}
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impl TextMethods for Text {
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// https://dom.spec.whatwg.org/#dom-text-splittextoffset
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fn SplitText(&self, offset: u32) -> Fallible<Root<Text>> {
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let cdata = self.upcast::<CharacterData>();
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// Step 1.
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let length = cdata.Length();
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if offset > length {
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// Step 2.
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return Err(Error::IndexSize);
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}
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// Step 3.
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let count = length - offset;
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// Step 4.
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let new_data = cdata.SubstringData(offset, count).unwrap();
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// Step 5.
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let node = self.upcast::<Node>();
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let owner_doc = node.owner_doc();
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let new_node = owner_doc.CreateTextNode(new_data);
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// Step 6.
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let parent = node.GetParentNode();
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if let Some(ref parent) = parent {
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// Step 7.
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parent.InsertBefore(new_node.upcast(), node.GetNextSibling().r()).unwrap();
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// TODO: Ranges.
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}
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// Step 8.
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cdata.DeleteData(offset, count).unwrap();
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if parent.is_none() {
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// Step 9.
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// TODO: Ranges
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}
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// Step 10.
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Ok(new_node)
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}
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// https://dom.spec.whatwg.org/#dom-text-wholetext
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fn WholeText(&self) -> DOMString {
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let first = self.upcast::<Node>().inclusively_preceding_siblings()
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.take_while(|node| node.is::<Text>())
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.last().unwrap();
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let nodes = first.inclusively_following_siblings()
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.take_while(|node| node.is::<Text>());
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let mut text = DOMString::new();
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for ref node in nodes {
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let cdata = node.downcast::<CharacterData>().unwrap();
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text.0.push_str(&cdata.data());
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}
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text
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}
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}
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