servo/components/script/dom/htmltextareaelement.rs
Anthony Ramine 7d6ea83479 Explicitly customise flags of new nodes where needed
Given codegen now generates the various TypeId enums, it seems pointless to
still have to write their respective values in every DOM struct inheriting from
Node just to set the initial IS_IN_DOC flag in Document and IN_ENABLED_STATE in
form controls.
2015-10-15 17:30:41 +02:00

369 lines
13 KiB
Rust

/* 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::attr::{Attr, AttrValue};
use dom::bindings::cell::DOMRefCell;
use dom::bindings::codegen::Bindings::EventBinding::EventMethods;
use dom::bindings::codegen::Bindings::HTMLTextAreaElementBinding;
use dom::bindings::codegen::Bindings::HTMLTextAreaElementBinding::HTMLTextAreaElementMethods;
use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
use dom::bindings::codegen::InheritTypes::{ElementCast, EventTargetCast};
use dom::bindings::codegen::InheritTypes::{HTMLElementCast, HTMLFieldSetElementDerived};
use dom::bindings::codegen::InheritTypes::{KeyboardEventCast, NodeCast};
use dom::bindings::global::GlobalRef;
use dom::bindings::js::{LayoutJS, Root};
use dom::bindings::refcounted::Trusted;
use dom::document::Document;
use dom::element::AttributeMutation;
use dom::event::{Event, EventBubbles, EventCancelable};
use dom::htmlelement::HTMLElement;
use dom::htmlformelement::{FormControl, HTMLFormElement};
use dom::keyboardevent::KeyboardEvent;
use dom::node::{ChildrenMutation, IN_ENABLED_STATE, Node, NodeDamage};
use dom::node::{NodeFlags, document_from_node, window_from_node};
use dom::virtualmethods::VirtualMethods;
use msg::constellation_msg::ConstellationChan;
use script_task::ScriptTaskEventCategory::InputEvent;
use script_task::{CommonScriptMsg, Runnable};
use std::borrow::ToOwned;
use std::cell::Cell;
use string_cache::Atom;
use textinput::{KeyReaction, Lines, TextInput};
use util::str::DOMString;
#[dom_struct]
pub struct HTMLTextAreaElement {
htmlelement: HTMLElement,
#[ignore_heap_size_of = "#7193"]
textinput: DOMRefCell<TextInput<ConstellationChan>>,
cols: Cell<u32>,
rows: Cell<u32>,
// https://html.spec.whatwg.org/multipage/#concept-textarea-dirty
value_changed: Cell<bool>,
}
pub trait LayoutHTMLTextAreaElementHelpers {
#[allow(unsafe_code)]
unsafe fn get_value_for_layout(self) -> String;
}
pub trait RawLayoutHTMLTextAreaElementHelpers {
#[allow(unsafe_code)]
unsafe fn get_cols_for_layout(self) -> u32;
#[allow(unsafe_code)]
unsafe fn get_rows_for_layout(self) -> u32;
}
impl LayoutHTMLTextAreaElementHelpers for LayoutJS<HTMLTextAreaElement> {
#[allow(unrooted_must_root)]
#[allow(unsafe_code)]
unsafe fn get_value_for_layout(self) -> String {
(*self.unsafe_get()).textinput.borrow_for_layout().get_content()
}
}
impl<'a> RawLayoutHTMLTextAreaElementHelpers for &'a HTMLTextAreaElement {
#[allow(unrooted_must_root)]
#[allow(unsafe_code)]
unsafe fn get_cols_for_layout(self) -> u32 {
self.cols.get()
}
#[allow(unrooted_must_root)]
#[allow(unsafe_code)]
unsafe fn get_rows_for_layout(self) -> u32 {
self.rows.get()
}
}
static DEFAULT_COLS: u32 = 20;
static DEFAULT_ROWS: u32 = 2;
impl HTMLTextAreaElement {
fn new_inherited(localName: DOMString,
prefix: Option<DOMString>,
document: &Document) -> HTMLTextAreaElement {
let chan = document.window().r().constellation_chan();
HTMLTextAreaElement {
htmlelement:
HTMLElement::new_inherited_with_flags(NodeFlags::new() | IN_ENABLED_STATE,
localName, prefix, document),
textinput: DOMRefCell::new(TextInput::new(Lines::Multiple, "".to_owned(), chan)),
cols: Cell::new(DEFAULT_COLS),
rows: Cell::new(DEFAULT_ROWS),
value_changed: Cell::new(false),
}
}
#[allow(unrooted_must_root)]
pub fn new(localName: DOMString,
prefix: Option<DOMString>,
document: &Document) -> Root<HTMLTextAreaElement> {
let element = HTMLTextAreaElement::new_inherited(localName, prefix, document);
Node::reflect_node(box element, document, HTMLTextAreaElementBinding::Wrap)
}
}
impl HTMLTextAreaElementMethods for HTMLTextAreaElement {
// TODO A few of these attributes have default values and additional
// constraints
// https://html.spec.whatwg.org/multipage/#dom-textarea-cols
make_uint_getter!(Cols, "cols", DEFAULT_COLS);
// https://html.spec.whatwg.org/multipage/#dom-textarea-cols
make_limited_uint_setter!(SetCols, "cols", DEFAULT_COLS);
// https://html.spec.whatwg.org/multipage/#dom-fe-disabled
make_bool_getter!(Disabled);
// https://html.spec.whatwg.org/multipage/#dom-fe-disabled
make_bool_setter!(SetDisabled, "disabled");
// https://html.spec.whatwg.org/multipage/#dom-fae-form
fn GetForm(&self) -> Option<Root<HTMLFormElement>> {
self.form_owner()
}
// https://html.spec.whatwg.org/multipage/#attr-fe-name
make_getter!(Name);
// https://html.spec.whatwg.org/multipage/#attr-fe-name
make_setter!(SetName, "name");
// https://html.spec.whatwg.org/multipage/#dom-textarea-placeholder
make_getter!(Placeholder);
// https://html.spec.whatwg.org/multipage/#dom-textarea-placeholder
make_setter!(SetPlaceholder, "placeholder");
// https://html.spec.whatwg.org/multipage/#attr-textarea-readonly
make_bool_getter!(ReadOnly);
// https://html.spec.whatwg.org/multipage/#attr-textarea-readonly
make_bool_setter!(SetReadOnly, "readonly");
// https://html.spec.whatwg.org/multipage/#dom-textarea-required
make_bool_getter!(Required);
// https://html.spec.whatwg.org/multipage/#dom-textarea-required
make_bool_setter!(SetRequired, "required");
// https://html.spec.whatwg.org/multipage/#dom-textarea-rows
make_uint_getter!(Rows, "rows", DEFAULT_ROWS);
// https://html.spec.whatwg.org/multipage/#dom-textarea-rows
make_limited_uint_setter!(SetRows, "rows", DEFAULT_ROWS);
// https://html.spec.whatwg.org/multipage/#dom-textarea-wrap
make_getter!(Wrap);
// https://html.spec.whatwg.org/multipage/#dom-textarea-wrap
make_setter!(SetWrap, "wrap");
// https://html.spec.whatwg.org/multipage/#dom-textarea-type
fn Type(&self) -> DOMString {
"textarea".to_owned()
}
// https://html.spec.whatwg.org/multipage/#dom-textarea-defaultvalue
fn DefaultValue(&self) -> DOMString {
let node = NodeCast::from_ref(self);
node.GetTextContent().unwrap()
}
// https://html.spec.whatwg.org/multipage/#dom-textarea-defaultvalue
fn SetDefaultValue(&self, value: DOMString) {
let node = NodeCast::from_ref(self);
node.SetTextContent(Some(value));
// if the element's dirty value flag is false, then the element's
// raw value must be set to the value of the element's textContent IDL attribute
if !self.value_changed.get() {
self.reset();
}
}
// https://html.spec.whatwg.org/multipage/#dom-textarea-value
fn Value(&self) -> DOMString {
self.textinput.borrow().get_content()
}
// https://html.spec.whatwg.org/multipage/#dom-textarea-value
fn SetValue(&self, value: DOMString) {
// TODO move the cursor to the end of the field
self.textinput.borrow_mut().set_content(value);
self.value_changed.set(true);
self.force_relayout();
}
}
impl HTMLTextAreaElement {
// https://html.spec.whatwg.org/multipage/#concept-fe-mutable
pub fn mutable(&self) -> bool {
// https://html.spec.whatwg.org/multipage/#the-textarea-element:concept-fe-mutable
!(self.Disabled() || self.ReadOnly())
}
pub fn reset(&self) {
// https://html.spec.whatwg.org/multipage/#the-textarea-element:concept-form-reset-control
self.SetValue(self.DefaultValue());
self.value_changed.set(false);
}
}
impl HTMLTextAreaElement {
fn force_relayout(&self) {
let doc = document_from_node(self);
let node = NodeCast::from_ref(self);
doc.r().content_changed(node, NodeDamage::OtherNodeDamage)
}
fn dispatch_change_event(&self) {
let window = window_from_node(self);
let window = window.r();
let event = Event::new(GlobalRef::Window(window),
"input".to_owned(),
EventBubbles::DoesNotBubble,
EventCancelable::NotCancelable);
let target = EventTargetCast::from_ref(self);
target.dispatch_event(event.r());
}
}
impl VirtualMethods for HTMLTextAreaElement {
fn super_type<'b>(&'b self) -> Option<&'b VirtualMethods> {
let htmlelement: &HTMLElement = HTMLElementCast::from_ref(self);
Some(htmlelement as &VirtualMethods)
}
fn attribute_mutated(&self, attr: &Attr, mutation: AttributeMutation) {
self.super_type().unwrap().attribute_mutated(attr, mutation);
match attr.local_name() {
&atom!(disabled) => {
let node = NodeCast::from_ref(self);
match mutation {
AttributeMutation::Set(_) => {
node.set_disabled_state(true);
node.set_enabled_state(false);
},
AttributeMutation::Removed => {
node.set_disabled_state(false);
node.set_enabled_state(true);
node.check_ancestors_disabled_state_for_form_control();
}
}
},
&atom!(cols) => {
let cols = mutation.new_value(attr).map(|value| {
value.as_uint()
});
self.cols.set(cols.unwrap_or(DEFAULT_COLS));
},
&atom!(rows) => {
let rows = mutation.new_value(attr).map(|value| {
value.as_uint()
});
self.rows.set(rows.unwrap_or(DEFAULT_ROWS));
},
_ => {},
}
}
fn bind_to_tree(&self, tree_in_doc: bool) {
if let Some(ref s) = self.super_type() {
s.bind_to_tree(tree_in_doc);
}
let node = NodeCast::from_ref(self);
node.check_ancestors_disabled_state_for_form_control();
}
fn parse_plain_attribute(&self, name: &Atom, value: DOMString) -> AttrValue {
match name {
&atom!("cols") => AttrValue::from_limited_u32(value, DEFAULT_COLS),
&atom!("rows") => AttrValue::from_limited_u32(value, DEFAULT_ROWS),
_ => self.super_type().unwrap().parse_plain_attribute(name, value),
}
}
fn unbind_from_tree(&self, tree_in_doc: bool) {
if let Some(ref s) = self.super_type() {
s.unbind_from_tree(tree_in_doc);
}
let node = NodeCast::from_ref(self);
if node.ancestors().any(|ancestor| ancestor.r().is_htmlfieldsetelement()) {
node.check_ancestors_disabled_state_for_form_control();
} else {
node.check_disabled_attribute();
}
}
fn children_changed(&self, mutation: &ChildrenMutation) {
if let Some(ref s) = self.super_type() {
s.children_changed(mutation);
}
if !self.value_changed.get() {
self.reset();
}
}
// copied and modified from htmlinputelement.rs
fn handle_event(&self, event: &Event) {
if let Some(s) = self.super_type() {
s.handle_event(event);
}
if &*event.Type() == "click" && !event.DefaultPrevented() {
//TODO: set the editing position for text inputs
let doc = document_from_node(self);
doc.r().request_focus(ElementCast::from_ref(self));
} else if &*event.Type() == "keydown" && !event.DefaultPrevented() {
let keyevent: Option<&KeyboardEvent> = KeyboardEventCast::to_ref(event);
keyevent.map(|kevent| {
match self.textinput.borrow_mut().handle_keydown(kevent) {
KeyReaction::TriggerDefaultAction => (),
KeyReaction::DispatchInput => {
self.value_changed.set(true);
if event.IsTrusted() {
let window = window_from_node(self);
let window = window.r();
let chan = window.script_chan();
let handler = Trusted::new(window.get_cx(), self, chan.clone());
let dispatcher = ChangeEventRunnable {
element: handler,
};
let _ = chan.send(CommonScriptMsg::RunnableMsg(InputEvent, box dispatcher));
}
self.force_relayout();
}
KeyReaction::RedrawSelection => {
self.force_relayout();
}
KeyReaction::Nothing => (),
}
});
}
}
}
impl FormControl for HTMLTextAreaElement {}
pub struct ChangeEventRunnable {
element: Trusted<HTMLTextAreaElement>,
}
impl Runnable for ChangeEventRunnable {
fn handler(self: Box<ChangeEventRunnable>) {
let target = self.element.root();
target.r().dispatch_change_event();
}
}