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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::cell::DomRefCell;
use dom::bindings::codegen::Bindings::FormDataBinding::FormDataMethods;
use dom::bindings::codegen::Bindings::FormDataBinding::FormDataWrap;
use dom::bindings::codegen::UnionTypes::FileOrUSVString;
use dom::bindings::error::Fallible;
use dom::bindings::inheritance::Castable;
use dom::bindings::iterable::Iterable;
use dom::bindings::reflector::{DomObject, Reflector, reflect_dom_object};
use dom::bindings::root::DomRoot;
use dom::bindings::str::{DOMString, USVString};
use dom::blob::{Blob, BlobImpl};
use dom::file::File;
use dom::globalscope::GlobalScope;
use dom::htmlformelement::{HTMLFormElement, FormDatumValue, FormDatum};
use dom_struct::dom_struct;
use html5ever::LocalName;
use std::collections::HashMap;
use std::collections::hash_map::Entry::{Occupied, Vacant};
use std::iter;
#[dom_struct]
pub struct FormData {
reflector_: Reflector,
data: DomRefCell<HashMap<LocalName, Vec<FormDatum>>>,
}
impl FormData {
fn new_inherited(opt_form: Option<&HTMLFormElement>) -> FormData {
let mut hashmap: HashMap<LocalName, Vec<FormDatum>> = HashMap::new();
if let Some(form) = opt_form {
for datum in form.get_form_dataset(None) {
match hashmap.entry(LocalName::from(datum.name.as_ref())) {
Occupied(entry) => entry.into_mut().push(datum),
Vacant(entry) => { entry.insert(vec!(datum)); }
}
}
}
FormData {
reflector_: Reflector::new(),
data: DomRefCell::new(hashmap),
}
}
pub fn new(form: Option<&HTMLFormElement>, global: &GlobalScope) -> DomRoot<FormData> {
reflect_dom_object(Box::new(FormData::new_inherited(form)),
global, FormDataWrap)
}
pub fn Constructor(global: &GlobalScope, form: Option<&HTMLFormElement>) -> Fallible<DomRoot<FormData>> {
// TODO: Construct form data set for form if it is supplied
Ok(FormData::new(form, global))
}
}
impl FormDataMethods for FormData {
// https://xhr.spec.whatwg.org/#dom-formdata-append
fn Append(&self, name: USVString, str_value: USVString) {
let datum = FormDatum {
ty: DOMString::from("string"),
name: DOMString::from(name.0.clone()),
value: FormDatumValue::String(DOMString::from(str_value.0)),
};
let mut data = self.data.borrow_mut();
match data.entry(LocalName::from(name.0)) {
Occupied(entry) => entry.into_mut().push(datum),
Vacant(entry) => { entry.insert(vec!(datum)); }
}
}
#[allow(unrooted_must_root)]
// https://xhr.spec.whatwg.org/#dom-formdata-append
fn Append_(&self, name: USVString, blob: &Blob, filename: Option<USVString>) {
let datum = FormDatum {
ty: DOMString::from("file"),
name: DOMString::from(name.0.clone()),
value: FormDatumValue::File(DomRoot::from_ref(&*self.create_an_entry(blob, filename))),
};
let mut data = self.data.borrow_mut();
match data.entry(LocalName::from(name.0)) {
Occupied(entry) => entry.into_mut().push(datum),
Vacant(entry) => { entry.insert(vec!(datum)); },
}
}
// https://xhr.spec.whatwg.org/#dom-formdata-delete
fn Delete(&self, name: USVString) {
self.data.borrow_mut().remove(&LocalName::from(name.0));
}
// https://xhr.spec.whatwg.org/#dom-formdata-get
fn Get(&self, name: USVString) -> Option<FileOrUSVString> {
self.data.borrow()
.get(&LocalName::from(name.0))
.map(|entry| match entry[0].value {
FormDatumValue::String(ref s) => FileOrUSVString::USVString(USVString(s.to_string())),
FormDatumValue::File(ref b) => FileOrUSVString::File(DomRoot::from_ref(&*b)),
})
}
// https://xhr.spec.whatwg.org/#dom-formdata-getall
fn GetAll(&self, name: USVString) -> Vec<FileOrUSVString> {
self.data.borrow()
.get(&LocalName::from(name.0))
.map_or(vec![], |data|
data.iter().map(|item| match item.value {
FormDatumValue::String(ref s) => FileOrUSVString::USVString(USVString(s.to_string())),
FormDatumValue::File(ref b) => FileOrUSVString::File(DomRoot::from_ref(&*b)),
}).collect()
)
}
// https://xhr.spec.whatwg.org/#dom-formdata-has
fn Has(&self, name: USVString) -> bool {
self.data.borrow().contains_key(&LocalName::from(name.0))
}
// https://xhr.spec.whatwg.org/#dom-formdata-set
fn Set(&self, name: USVString, str_value: USVString) {
self.data.borrow_mut().insert(LocalName::from(name.0.clone()), vec![FormDatum {
ty: DOMString::from("string"),
name: DOMString::from(name.0),
value: FormDatumValue::String(DOMString::from(str_value.0)),
}]);
}
#[allow(unrooted_must_root)]
// https://xhr.spec.whatwg.org/#dom-formdata-set
fn Set_(&self, name: USVString, blob: &Blob, filename: Option<USVString>) {
self.data.borrow_mut().insert(LocalName::from(name.0.clone()), vec![FormDatum {
ty: DOMString::from("file"),
name: DOMString::from(name.0),
value: FormDatumValue::File(DomRoot::from_ref(&*self.create_an_entry(blob, filename))),
}]);
}
}
impl FormData {
// https://xhr.spec.whatwg.org/#create-an-entry
// Steps 3-4.
fn create_an_entry(&self, blob: &Blob, opt_filename: Option<USVString>) -> DomRoot<File> {
let name = match opt_filename {
Some(filename) => DOMString::from(filename.0),
None if blob.downcast::<File>().is_none() => DOMString::from("blob"),
None => DOMString::from(""),
};
let bytes = blob.get_bytes().unwrap_or(vec![]);
File::new(&self.global(), BlobImpl::new_from_bytes(bytes), name, None, &blob.type_string())
}
pub fn datums(&self) -> Vec<FormDatum> {
self.data.borrow().values()
.flat_map(|value| value.iter())
.map(|value| value.clone())
.collect()
}
}
impl Iterable for FormData {
type Key = USVString;
type Value = FileOrUSVString;
fn get_iterable_length(&self) -> u32 {
self.data.borrow().values().map(|value| value.len()).sum::<usize>() as u32
}
fn get_value_at_index(&self, n: u32) -> FileOrUSVString {
let data = self.data.borrow();
let value = &data.values()
.flat_map(|value| value.iter())
.nth(n as usize)
.unwrap()
.value;
match *value {
FormDatumValue::String(ref s) => FileOrUSVString::USVString(USVString(s.to_string())),
FormDatumValue::File(ref b) => FileOrUSVString::File(DomRoot::from_ref(&*b)),
}
}
fn get_key_at_index(&self, n: u32) -> USVString {
let data = self.data.borrow();
let value = &data.iter()
.flat_map(|(key, value)| iter::repeat(key).take(value.len()))
.nth(n as usize)
.unwrap();
USVString(value.to_string())
}
}
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