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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 strict";
const Cc = Components.classes;
const Ci = Components.interfaces;
const Cu = Components.utils;
const DEBUG = false;
function debug(aStr) {
if (DEBUG) {
dump("-*- DateTimePickerHelper: " + aStr + "\n");
}
}
this.EXPORTED_SYMBOLS = [
"DateTimePickerHelper"
];
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/Task.jsm");
/*
* DateTimePickerHelper receives message from content side (input box) and
* is reposible for opening, closing and updating the picker. Similary,
* DateTimePickerHelper listens for picker's events and notifies the content
* side (input box) about them.
*/
this.DateTimePickerHelper = {
picker: null,
weakBrowser: null,
MESSAGES: [
"FormDateTime:OpenPicker",
"FormDateTime:ClosePicker",
"FormDateTime:UpdatePicker"
],
init: function() {
for (let msg of this.MESSAGES) {
Services.mm.addMessageListener(msg, this);
}
},
uninit: function() {
for (let msg of this.MESSAGES) {
Services.mm.removeMessageListener(msg, this);
}
},
// nsIMessageListener
receiveMessage: function(aMessage) {
debug("receiveMessage: " + aMessage.name);
switch (aMessage.name) {
case "FormDateTime:OpenPicker": {
this.showPicker(aMessage.target, aMessage.data);
break;
}
case "FormDateTime:ClosePicker": {
if (!this.picker) {
return;
}
this.picker.closePicker();
break;
}
case "FormDateTime:UpdatePicker": {
if (!this.picker) {
return;
}
this.picker.setPopupValue(aMessage.data);
break;
}
default:
break;
}
},
// nsIDOMEventListener
handleEvent: function(aEvent) {
debug("handleEvent: " + aEvent.type);
switch (aEvent.type) {
case "DateTimePickerValueChanged": {
this.updateInputBoxValue(aEvent);
break;
}
case "popuphidden": {
let browser = this.weakBrowser ? this.weakBrowser.get() : null;
if (browser) {
browser.messageManager.sendAsyncMessage("FormDateTime:PickerClosed");
}
this.picker.closePicker();
this.close();
break;
}
default:
break;
}
},
// Called when picker value has changed, notify input box about it.
updateInputBoxValue: function(aEvent) {
let browser = this.weakBrowser ? this.weakBrowser.get() : null;
if (browser) {
browser.messageManager.sendAsyncMessage(
"FormDateTime:PickerValueChanged", aEvent.detail);
}
},
// Get picker from browser and show it anchored to the input box.
showPicker: Task.async(function* (aBrowser, aData) {
let rect = aData.rect;
let dir = aData.dir;
let type = aData.type;
let detail = aData.detail;
this._anchor = aBrowser.ownerGlobal.gBrowser.popupAnchor;
this._anchor.left = rect.left;
this._anchor.top = rect.top;
this._anchor.width = rect.width;
this._anchor.height = rect.height;
this._anchor.hidden = false;
debug("Opening picker with details: " + JSON.stringify(detail));
let window = aBrowser.ownerDocument.defaultView;
let tabbrowser = window.gBrowser;
if (Services.focus.activeWindow != window ||
tabbrowser.selectedBrowser != aBrowser) {
// We were sent a message from a window or tab that went into the
// background, so we'll ignore it for now.
return;
}
this.weakBrowser = Cu.getWeakReference(aBrowser);
this.picker = aBrowser.dateTimePicker;
if (!this.picker) {
debug("aBrowser.dateTimePicker not found, exiting now.");
return;
}
// The datetimepopup binding is only attached when it is needed.
// Check if openPicker method is present to determine if binding has
// been attached. If not, attach the binding first before calling it.
if (!this.picker.openPicker) {
let bindingPromise = new Promise(resolve => {
this.picker.addEventListener("DateTimePickerBindingReady",
resolve, {once: true});
});
this.picker.setAttribute("active", true);
yield bindingPromise;
}
// The arrow panel needs an anchor to work. The popupAnchor (this._anchor)
// is a transparent div that the arrow can point to.
this.picker.openPicker(type, this._anchor, detail);
this.addPickerListeners();
}),
// Picker is closed, do some cleanup.
close: function() {
this.removePickerListeners();
this.picker = null;
this.weakBrowser = null;
this._anchor.hidden = true;
},
// Listen to picker's event.
addPickerListeners: function() {
if (!this.picker) {
return;
}
this.picker.addEventListener("popuphidden", this);
this.picker.addEventListener("DateTimePickerValueChanged", this);
},
// Stop listening to picker's event.
removePickerListeners: function() {
if (!this.picker) {
return;
}
this.picker.removeEventListener("popuphidden", this);
this.picker.removeEventListener("DateTimePickerValueChanged", this);
},
};
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