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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/. */
const lazy = {};
ChromeUtils.defineESModuleGetters(lazy, {
LayoutUtils: "resource://gre/modules/LayoutUtils.sys.mjs",
});
/**
* DateTimePickerChild is the communication channel between the input box
* (content) for date/time input types and its picker (chrome).
*/
export class DateTimePickerChild extends JSWindowActorChild {
/**
* On init, just listen for the event to open the picker, once the picker is
* opened, we'll listen for update and close events.
*/
constructor() {
super();
this._inputElement = null;
}
/**
* Cleanup function called when picker is closed.
*/
close() {
this.removeListeners(this._inputElement);
let dateTimeBoxElement = this._inputElement.dateTimeBoxElement;
if (!dateTimeBoxElement) {
this._inputElement = null;
return;
}
// dateTimeBoxElement is within UA Widget Shadow DOM.
// An event dispatch to it can't be accessed by document.
let win = this._inputElement.ownerGlobal;
dateTimeBoxElement.dispatchEvent(
new win.CustomEvent("MozSetDateTimePickerState", { detail: false })
);
this._inputElement = null;
}
/**
* Called after picker is opened to start listening for input box update
* events.
*/
addListeners(aElement) {
aElement.ownerGlobal.addEventListener("pagehide", this);
}
/**
* Stop listeneing for events when picker is closed.
*/
removeListeners(aElement) {
aElement.ownerGlobal.removeEventListener("pagehide", this);
}
/**
* Helper function that returns the CSS direction property of the element.
*/
getComputedDirection(aElement) {
return aElement.ownerGlobal
.getComputedStyle(aElement)
.getPropertyValue("direction");
}
/**
* Helper function that returns the rect of the element, which is the position
* relative to the left/top of the content area.
*/
getBoundingContentRect(aElement) {
return lazy.LayoutUtils.getElementBoundingScreenRect(aElement);
}
getTimePickerPref() {
return Services.prefs.getBoolPref("dom.forms.datetime.timepicker");
}
/**
* nsIMessageListener.
*/
receiveMessage(aMessage) {
switch (aMessage.name) {
case "FormDateTime:PickerClosed": {
if (!this._inputElement) {
return;
}
this.close();
break;
}
case "FormDateTime:PickerValueChanged": {
if (!this._inputElement) {
return;
}
let dateTimeBoxElement = this._inputElement.dateTimeBoxElement;
if (!dateTimeBoxElement) {
return;
}
let win = this._inputElement.ownerGlobal;
// dateTimeBoxElement is within UA Widget Shadow DOM.
// An event dispatch to it can't be accessed by document.
dateTimeBoxElement.dispatchEvent(
new win.CustomEvent("MozPickerValueChanged", {
detail: Cu.cloneInto(aMessage.data, win),
})
);
break;
}
default:
break;
}
}
/**
* nsIDOMEventListener, for chrome events sent by the input element and other
* DOM events.
*/
handleEvent(aEvent) {
switch (aEvent.type) {
case "MozOpenDateTimePicker": {
// Time picker is disabled when preffed off
if (
!aEvent.originalTarget.ownerGlobal.HTMLInputElement.isInstance(
aEvent.originalTarget
) ||
(aEvent.originalTarget.type == "time" && !this.getTimePickerPref())
) {
return;
}
if (this._inputElement) {
// This happens when we're trying to open a picker when another picker
// is still open. We ignore this request to let the first picker
// close gracefully.
return;
}
this._inputElement = aEvent.originalTarget;
let dateTimeBoxElement = this._inputElement.dateTimeBoxElement;
if (!dateTimeBoxElement) {
throw new Error("How do we get this event without a UA Widget?");
}
// dateTimeBoxElement is within UA Widget Shadow DOM.
// An event dispatch to it can't be accessed by document, because
// the event is not composed.
let win = this._inputElement.ownerGlobal;
dateTimeBoxElement.dispatchEvent(
new win.CustomEvent("MozSetDateTimePickerState", { detail: true })
);
this.addListeners(this._inputElement);
let value = this._inputElement.getDateTimeInputBoxValue();
this.sendAsyncMessage("FormDateTime:OpenPicker", {
rect: this.getBoundingContentRect(this._inputElement),
dir: this.getComputedDirection(this._inputElement),
type: this._inputElement.type,
detail: {
// Pass partial value if it's available, otherwise pass input
// element's value.
value: Object.keys(value).length ? value : this._inputElement.value,
min: this._inputElement.getMinimum(),
max: this._inputElement.getMaximum(),
step: this._inputElement.getStep(),
stepBase: this._inputElement.getStepBase(),
},
});
break;
}
case "MozUpdateDateTimePicker": {
let value = this._inputElement.getDateTimeInputBoxValue();
value.type = this._inputElement.type;
this.sendAsyncMessage("FormDateTime:UpdatePicker", { value });
break;
}
case "MozCloseDateTimePicker": {
this.sendAsyncMessage("FormDateTime:ClosePicker", {});
this.close();
break;
}
case "pagehide": {
if (
this._inputElement &&
this._inputElement.ownerDocument == aEvent.target
) {
this.sendAsyncMessage("FormDateTime:ClosePicker", {});
this.close();
}
break;
}
default:
break;
}
}
}
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