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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 kMenuPopupId = "clipboardReadPasteMenuPopup";
// Exchanges messages with the child actor and handles events from the
// pasteMenuHandler.
export class ClipboardReadPasteParent extends JSWindowActorParent {
constructor() {
super();
this._menupopup = null;
this._menuitem = null;
this._delayTimer = null;
this._pasteMenuItemClicked = false;
this._lastBeepTime = 0;
}
didDestroy() {
if (this._menupopup) {
this._menupopup.hidePopup(true);
}
}
// EventListener interface.
handleEvent(aEvent) {
switch (aEvent.type) {
case "command": {
this.onCommand();
break;
}
case "popuphiding": {
this.onPopupHiding();
break;
}
case "keydown": {
this.onKeyDown(aEvent);
break;
}
}
}
onCommand() {
this._pasteMenuItemClicked = true;
this.sendAsyncMessage("ClipboardReadPaste:PasteMenuItemClicked");
}
onPopupHiding() {
// Remove the listeners before potentially sending the async message
// below, because that might throw.
this._removeMenupopupEventListeners();
this._clearDelayTimer();
this._stopWatchingForSpammyActivation();
if (this._pasteMenuItemClicked) {
// A message was already sent. Reset the state to handle further
// click/dismiss events properly.
this._pasteMenuItemClicked = false;
} else {
this.sendAsyncMessage("ClipboardReadPaste:PasteMenuItemDismissed");
}
}
onKeyDown(aEvent) {
if (!this._menuitem.disabled) {
return;
}
let accesskey = this._menuitem.getAttribute("accesskey");
if (
aEvent.key == accesskey.toLowerCase() ||
aEvent.key == accesskey.toUpperCase()
) {
if (Date.now() - this._lastBeepTime > 1000) {
Cc["@mozilla.org/sound;1"].getService(Ci.nsISound).beep();
this._lastBeepTime = Date.now();
}
this._refreshDelayTimer();
}
}
// For JSWindowActorParent.
receiveMessage(value) {
if (value.name == "ClipboardReadPaste:ShowMenupopup") {
if (!this._menupopup) {
this._menupopup = this._getMenupopup();
this._menuitem = this._menupopup.firstElementChild;
}
this._addMenupopupEventListeners();
const browser = this.browsingContext.top.embedderElement;
const window = browser.ownerGlobal;
const windowUtils = window.windowUtils;
let mouseXInCSSPixels = {};
let mouseYInCSSPixels = {};
windowUtils.getLastOverWindowPointerLocationInCSSPixels(
mouseXInCSSPixels,
mouseYInCSSPixels
);
this._menuitem.disabled = true;
this._startWatchingForSpammyActivation();
// `openPopup` is a no-op if the popup is already opened.
// That property is used when `navigator.clipboard.readText()` or
// `navigator.clipboard.read()`is called from two different frames, e.g.
// an iframe and the top level frame. In that scenario, the two frames
// correspond to different `navigator.clipboard` instances. When
// `readText()` or `read()` is called from both frames, an actor pair is
// instantiated for each of them. Both actor parents will call `openPopup`
// on the same `_menupopup` object. If the popup is already open,
// `openPopup` is a no-op. When the popup is clicked or dismissed both
// actor parents will receive the corresponding event.
this._menupopup.openPopup(
null,
"overlap" /* options */,
mouseXInCSSPixels.value,
mouseYInCSSPixels.value,
true /* isContextMenu */
);
this._refreshDelayTimer();
}
}
_addMenupopupEventListeners() {
this._menupopup.addEventListener("command", this);
this._menupopup.addEventListener("popuphiding", this);
}
_removeMenupopupEventListeners() {
this._menupopup.removeEventListener("command", this);
this._menupopup.removeEventListener("popuphiding", this);
}
_createMenupopup(aChromeDoc) {
let menuitem = aChromeDoc.createXULElement("menuitem");
menuitem.id = "clipboardReadPasteMenuItem";
menuitem.setAttribute("data-l10n-id", "text-action-paste");
let menupopup = aChromeDoc.createXULElement("menupopup");
menupopup.id = kMenuPopupId;
menupopup.appendChild(menuitem);
return menupopup;
}
_getMenupopup() {
let browser = this.browsingContext.top.embedderElement;
let window = browser.ownerGlobal;
let chromeDoc = window.document;
let menupopup = chromeDoc.getElementById(kMenuPopupId);
if (menupopup == null) {
menupopup = this._createMenupopup(chromeDoc);
const parent =
chromeDoc.querySelector("popupset") || chromeDoc.documentElement;
parent.appendChild(menupopup);
}
return menupopup;
}
_startWatchingForSpammyActivation() {
let doc = this._menuitem.ownerDocument;
Services.els.addSystemEventListener(doc, "keydown", this, true);
}
_stopWatchingForSpammyActivation() {
let doc = this._menuitem.ownerDocument;
Services.els.removeSystemEventListener(doc, "keydown", this, true);
}
_clearDelayTimer() {
if (this._delayTimer) {
let window = this._menuitem.ownerGlobal;
window.clearTimeout(this._delayTimer);
this._delayTimer = null;
}
}
_refreshDelayTimer() {
this._clearDelayTimer();
let window = this._menuitem.ownerGlobal;
let delay = Services.prefs.getIntPref("security.dialog_enable_delay");
this._delayTimer = window.setTimeout(() => {
this._menuitem.disabled = false;
this._stopWatchingForSpammyActivation();
this._delayTimer = null;
}, delay);
}
}
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