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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::conversions::DerivedFrom;
use dom::bindings::error::{Error, ErrorResult};
use dom::bindings::str::DOMString;
use dom::event::{EventBubbles, EventCancelable};
use dom::eventtarget::EventTarget;
use dom::node::{Node, NodeDamage, window_from_node};
use script_traits::ScriptToConstellationChan;
use textinput::{SelectionDirection, TextInput};
pub trait TextControl: DerivedFrom<EventTarget> + DerivedFrom<Node> {
fn textinput(&self) -> &DomRefCell<TextInput<ScriptToConstellationChan>>;
fn selection_api_applies(&self) -> bool;
// https://html.spec.whatwg.org/multipage/#dom-textarea/input-selectionstart
fn get_dom_selection_start(&self) -> Option<u32> {
// Step 1
if !self.selection_api_applies() {
return None;
}
// Steps 2-3
Some(self.selection_start())
}
// https://html.spec.whatwg.org/multipage/#dom-textarea/input-selectionstart
fn set_dom_selection_start(&self, start: Option<u32>) -> ErrorResult {
// Step 1
if !self.selection_api_applies() {
return Err(Error::InvalidState);
}
// Step 2
let mut end = self.selection_end();
// Step 3
if let Some(s) = start {
if end < s {
end = s;
}
}
// Step 4
self.set_selection_range(start, Some(end), Some(self.selection_direction()));
Ok(())
}
// https://html.spec.whatwg.org/multipage/#dom-textarea/input-selectionend
fn get_dom_selection_end(&self) -> Option<u32> {
// Step 1
if !self.selection_api_applies() {
return None;
}
// Steps 2-3
Some(self.selection_end())
}
// https://html.spec.whatwg.org/multipage/#dom-textarea/input-selectionend
fn set_dom_selection_end(&self, end: Option<u32>) -> ErrorResult {
// Step 1
if !self.selection_api_applies() {
return Err(Error::InvalidState);
}
// Step 2
self.set_selection_range(Some(self.selection_start()), end, Some(self.selection_direction()));
Ok(())
}
// https://html.spec.whatwg.org/multipage/#dom-textarea/input-selectiondirection
fn get_dom_selection_direction(&self) -> Option<DOMString> {
// Step 1
if !self.selection_api_applies() {
return None;
}
Some(DOMString::from(self.selection_direction()))
}
// https://html.spec.whatwg.org/multipage/#dom-textarea/input-selectiondirection
fn set_dom_selection_direction(&self, direction: Option<DOMString>) -> ErrorResult {
// Step 1
if !self.selection_api_applies() {
return Err(Error::InvalidState);
}
// Step 2
self.set_selection_range(
Some(self.selection_start()),
Some(self.selection_end()),
direction.map(|d| SelectionDirection::from(d))
);
Ok(())
}
// https://html.spec.whatwg.org/multipage/#dom-textarea/input-setselectionrange
fn set_dom_selection_range(&self, start: u32, end: u32, direction: Option<DOMString>) -> ErrorResult {
// Step 1
if !self.selection_api_applies() {
return Err(Error::InvalidState);
}
// Step 2
self.set_selection_range(Some(start), Some(end), direction.map(|d| SelectionDirection::from(d)));
Ok(())
}
fn selection_start(&self) -> u32 {
self.textinput().borrow().get_selection_start()
}
fn selection_end(&self) -> u32 {
self.textinput().borrow().get_absolute_insertion_point() as u32
}
fn selection_direction(&self) -> SelectionDirection {
self.textinput().borrow().selection_direction
}
// https://html.spec.whatwg.org/multipage/#set-the-selection-range
fn set_selection_range(&self, start: Option<u32>, end: Option<u32>, direction: Option<SelectionDirection>) {
// Step 1
let start = start.unwrap_or(0);
// Step 2
let end = end.unwrap_or(0);
// Steps 3-5
self.textinput().borrow_mut().set_selection_range(start, end, direction.unwrap_or(SelectionDirection::None));
// Step 6
let window = window_from_node(self);
let _ = window.user_interaction_task_source().queue_event(
&self.upcast::<EventTarget>(),
atom!("select"),
EventBubbles::Bubbles,
EventCancelable::NotCancelable,
&window);
self.upcast::<Node>().dirty(NodeDamage::OtherNodeDamage);
}
}
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