servo/components/script/dom/htmltextareaelement.rs

/* 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;
use dom::attr::AttrHelpers;
use dom::bindings::codegen::Bindings::HTMLTextAreaElementBinding;
use dom::bindings::codegen::Bindings::HTMLTextAreaElementBinding::HTMLTextAreaElementMethods;
use dom::bindings::codegen::InheritTypes::{HTMLElementCast, NodeCast};
use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
use dom::bindings::codegen::InheritTypes::{HTMLTextAreaElementDerived, HTMLFieldSetElementDerived};
use dom::bindings::js::{JSRef, Temporary};
use dom::bindings::utils::{Reflectable, Reflector};
use dom::document::Document;
use dom::element::{AttributeHandlers, HTMLTextAreaElementTypeId};
use dom::eventtarget::{EventTarget, NodeTargetTypeId};
use dom::htmlelement::HTMLElement;
use dom::node::{DisabledStateHelpers, Node, NodeHelpers, ElementNodeTypeId};
use dom::virtualmethods::VirtualMethods;

use servo_util::str::DOMString;
use string_cache::Atom;

#[dom_struct]
pub struct HTMLTextAreaElement {
    htmlelement: HTMLElement,
}

impl HTMLTextAreaElementDerived for EventTarget {
    fn is_htmltextareaelement(&self) -> bool {
        *self.type_id() == NodeTargetTypeId(ElementNodeTypeId(HTMLTextAreaElementTypeId))
    }
}

impl HTMLTextAreaElement {
    fn new_inherited(localName: DOMString, prefix: Option<DOMString>, document: JSRef<Document>) -> HTMLTextAreaElement {
        HTMLTextAreaElement {
            htmlelement: HTMLElement::new_inherited(HTMLTextAreaElementTypeId, localName, prefix, document)
        }
    }

    #[allow(unrooted_must_root)]
    pub fn new(localName: DOMString, prefix: Option<DOMString>, document: JSRef<Document>) -> Temporary<HTMLTextAreaElement> {
        let element = HTMLTextAreaElement::new_inherited(localName, prefix, document);
        Node::reflect_node(box element, document, HTMLTextAreaElementBinding::Wrap)
    }
}

impl<'a> HTMLTextAreaElementMethods for JSRef<'a, HTMLTextAreaElement> {
    // TODO A few of these attributes have default values and additional
    // constraints

    // https://html.spec.whatwg.org/multipage/forms.html#dom-textarea-cols
    make_uint_getter!(Cols)

    // https://html.spec.whatwg.org/multipage/forms.html#dom-textarea-cols
    make_uint_setter!(SetCols, "cols")

    // http://www.whatwg.org/html/#dom-fe-disabled
    make_bool_getter!(Disabled)

    // http://www.whatwg.org/html/#dom-fe-disabled
    make_bool_setter!(SetDisabled, "disabled")

    // https://html.spec.whatwg.org/multipage/forms.html#attr-fe-name
    make_getter!(Name)

    // https://html.spec.whatwg.org/multipage/forms.html#attr-fe-name
    make_setter!(SetName, "name")

    // https://html.spec.whatwg.org/multipage/forms.html#dom-textarea-placeholder
    make_getter!(Placeholder)

    // https://html.spec.whatwg.org/multipage/forms.html#dom-textarea-placeholder
    make_setter!(SetPlaceholder, "placeholder")

    // https://html.spec.whatwg.org/multipage/forms.html#dom-textarea-required
    make_bool_getter!(Required)

    // https://html.spec.whatwg.org/multipage/forms.html#dom-textarea-required
    make_bool_setter!(SetRequired, "required")

    // https://html.spec.whatwg.org/multipage/forms.html#dom-textarea-rows
    make_uint_getter!(Rows)

    // https://html.spec.whatwg.org/multipage/forms.html#dom-textarea-rows
    make_uint_setter!(SetRows, "rows")

    // https://html.spec.whatwg.org/multipage/forms.html#dom-textarea-wrap
    make_getter!(Wrap)

    // https://html.spec.whatwg.org/multipage/forms.html#dom-textarea-wrap
    make_setter!(SetWrap, "wrap")

    // https://html.spec.whatwg.org/multipage/forms.html#dom-textarea-type
    fn Type(self) -> DOMString {
        "textarea".to_string()
    }

    // https://html.spec.whatwg.org/multipage/forms.html#dom-textarea-defaultvalue
    fn DefaultValue(self) -> DOMString {
        let node: JSRef<Node> = NodeCast::from_ref(self);
        node.GetTextContent().unwrap()
    }

    // https://html.spec.whatwg.org/multipage/forms.html#dom-textarea-defaultvalue
    fn SetDefaultValue(self, value: DOMString) {
        let node: JSRef<Node> = NodeCast::from_ref(self);
        node.SetTextContent(Some(value))
    }
}

impl<'a> VirtualMethods for JSRef<'a, HTMLTextAreaElement> {
    fn super_type<'a>(&'a self) -> Option<&'a VirtualMethods> {
        let htmlelement: &JSRef<HTMLElement> = HTMLElementCast::from_borrowed_ref(self);
        Some(htmlelement as &VirtualMethods)
    }

    fn after_set_attr(&self, attr: JSRef<Attr>) {
        match self.super_type() {
            Some(ref s) => s.after_set_attr(attr),
            _ => ()
        }

        match attr.local_name() {
            &atom!("disabled") => {
                let node: JSRef<Node> = NodeCast::from_ref(*self);
                node.set_disabled_state(true);
                node.set_enabled_state(false);
            },
            _ => ()
        }
    }

    fn before_remove_attr(&self, attr: JSRef<Attr>) {
        match self.super_type() {
            Some(ref s) => s.before_remove_attr(attr),
            _ => ()
        }

        match attr.local_name() {
            &atom!("disabled") => {
                let node: JSRef<Node> = NodeCast::from_ref(*self);
                node.set_disabled_state(false);
                node.set_enabled_state(true);
                node.check_ancestors_disabled_state_for_form_control();
            },
            _ => ()
        }
    }

    fn bind_to_tree(&self, tree_in_doc: bool) {
        match self.super_type() {
            Some(ref s) => s.bind_to_tree(tree_in_doc),
            _ => (),
        }

        let node: JSRef<Node> = NodeCast::from_ref(*self);
        node.check_ancestors_disabled_state_for_form_control();
    }

    fn unbind_from_tree(&self, tree_in_doc: bool) {
        match self.super_type() {
            Some(ref s) => s.unbind_from_tree(tree_in_doc),
            _ => (),
        }

        let node: JSRef<Node> = NodeCast::from_ref(*self);
        if node.ancestors().any(|ancestor| ancestor.is_htmlfieldsetelement()) {
            node.check_ancestors_disabled_state_for_form_control();
        } else {
            node.check_disabled_attribute();
        }
    }
}

impl Reflectable for HTMLTextAreaElement {
    fn reflector<'a>(&'a self) -> &'a Reflector {
        self.htmlelement.reflector()
    }
}