1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/browser-element/BrowserElementPromptService.jsm Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,657 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
1.6 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +/* vim: set ft=javascript : */
1.8 +
1.9 +"use strict";
1.10 +
1.11 +let Cu = Components.utils;
1.12 +let Ci = Components.interfaces;
1.13 +let Cc = Components.classes;
1.14 +let Cr = Components.results;
1.15 +let Cm = Components.manager.QueryInterface(Ci.nsIComponentRegistrar);
1.16 +
1.17 +this.EXPORTED_SYMBOLS = ["BrowserElementPromptService"];
1.18 +
1.19 +Cu.import("resource://gre/modules/XPCOMUtils.jsm");
1.20 +Cu.import("resource://gre/modules/Services.jsm");
1.21 +
1.22 +const NS_PREFBRANCH_PREFCHANGE_TOPIC_ID = "nsPref:changed";
1.23 +const BROWSER_FRAMES_ENABLED_PREF = "dom.mozBrowserFramesEnabled";
1.24 +
1.25 +function debug(msg) {
1.26 + //dump("BrowserElementPromptService - " + msg + "\n");
1.27 +}
1.28 +
1.29 +function BrowserElementPrompt(win, browserElementChild) {
1.30 + this._win = win;
1.31 + this._browserElementChild = browserElementChild;
1.32 +}
1.33 +
1.34 +BrowserElementPrompt.prototype = {
1.35 + QueryInterface: XPCOMUtils.generateQI([Ci.nsIPrompt]),
1.36 +
1.37 + alert: function(title, text) {
1.38 + this._browserElementChild.showModalPrompt(
1.39 + this._win, {promptType: "alert", title: title, message: text, returnValue: undefined});
1.40 + },
1.41 +
1.42 + alertCheck: function(title, text, checkMsg, checkState) {
1.43 + // Treat this like a normal alert() call, ignoring the checkState. The
1.44 + // front-end can do its own suppression of the alert() if it wants.
1.45 + this.alert(title, text);
1.46 + },
1.47 +
1.48 + confirm: function(title, text) {
1.49 + return this._browserElementChild.showModalPrompt(
1.50 + this._win, {promptType: "confirm", title: title, message: text, returnValue: undefined});
1.51 + },
1.52 +
1.53 + confirmCheck: function(title, text, checkMsg, checkState) {
1.54 + return this.confirm(title, text);
1.55 + },
1.56 +
1.57 + // Each button is described by an object with the following schema
1.58 + // {
1.59 + // string messageType, // 'builtin' or 'custom'
1.60 + // string message, // 'ok', 'cancel', 'yes', 'no', 'save', 'dontsave',
1.61 + // // 'revert' or a string from caller if messageType was 'custom'.
1.62 + // }
1.63 + //
1.64 + // Expected result from embedder:
1.65 + // {
1.66 + // int button, // Index of the button that user pressed.
1.67 + // boolean checked, // True if the check box is checked.
1.68 + // }
1.69 + confirmEx: function(title, text, buttonFlags, button0Title, button1Title,
1.70 + button2Title, checkMsg, checkState) {
1.71 + let buttonProperties = this._buildConfirmExButtonProperties(buttonFlags,
1.72 + button0Title,
1.73 + button1Title,
1.74 + button2Title);
1.75 + let defaultReturnValue = { selectedButton: buttonProperties.defaultButton };
1.76 + if (checkMsg) {
1.77 + defaultReturnValue.checked = checkState.value;
1.78 + }
1.79 + let ret = this._browserElementChild.showModalPrompt(
1.80 + this._win,
1.81 + {
1.82 + promptType: "custom-prompt",
1.83 + title: title,
1.84 + message: text,
1.85 + defaultButton: buttonProperties.defaultButton,
1.86 + buttons: buttonProperties.buttons,
1.87 + showCheckbox: !!checkMsg,
1.88 + checkboxMessage: checkMsg,
1.89 + checkboxCheckedByDefault: !!checkState.value,
1.90 + returnValue: defaultReturnValue
1.91 + }
1.92 + );
1.93 + if (checkMsg) {
1.94 + checkState.value = ret.checked;
1.95 + }
1.96 + return buttonProperties.indexToButtonNumberMap[ret.selectedButton];
1.97 + },
1.98 +
1.99 + prompt: function(title, text, value, checkMsg, checkState) {
1.100 + let rv = this._browserElementChild.showModalPrompt(
1.101 + this._win,
1.102 + { promptType: "prompt",
1.103 + title: title,
1.104 + message: text,
1.105 + initialValue: value.value,
1.106 + returnValue: null });
1.107 +
1.108 + value.value = rv;
1.109 +
1.110 + // nsIPrompt::Prompt returns true if the user pressed "OK" at the prompt,
1.111 + // and false if the user pressed "Cancel".
1.112 + //
1.113 + // BrowserElementChild returns null for "Cancel" and returns the string the
1.114 + // user entered otherwise.
1.115 + return rv !== null;
1.116 + },
1.117 +
1.118 + promptUsernameAndPassword: function(title, text, username, password, checkMsg, checkState) {
1.119 + throw Cr.NS_ERROR_NOT_IMPLEMENTED;
1.120 + },
1.121 +
1.122 + promptPassword: function(title, text, password, checkMsg, checkState) {
1.123 + throw Cr.NS_ERROR_NOT_IMPLEMENTED;
1.124 + },
1.125 +
1.126 + select: function(title, text, aCount, aSelectList, aOutSelection) {
1.127 + throw Cr.NS_ERROR_NOT_IMPLEMENTED;
1.128 + },
1.129 +
1.130 + _buildConfirmExButtonProperties: function(buttonFlags, button0Title,
1.131 + button1Title, button2Title) {
1.132 + let r = {
1.133 + defaultButton: -1,
1.134 + buttons: [],
1.135 + // This map is for translating array index to the button number that
1.136 + // is recognized by Gecko. This shouldn't be exposed to embedder.
1.137 + indexToButtonNumberMap: []
1.138 + };
1.139 +
1.140 + let defaultButton = 0; // Default to Button 0.
1.141 + if (buttonFlags & Ci.nsIPrompt.BUTTON_POS_1_DEFAULT) {
1.142 + defaultButton = 1;
1.143 + } else if (buttonFlags & Ci.nsIPrompt.BUTTON_POS_2_DEFAULT) {
1.144 + defaultButton = 2;
1.145 + }
1.146 +
1.147 + // Properties of each button.
1.148 + let buttonPositions = [
1.149 + Ci.nsIPrompt.BUTTON_POS_0,
1.150 + Ci.nsIPrompt.BUTTON_POS_1,
1.151 + Ci.nsIPrompt.BUTTON_POS_2
1.152 + ];
1.153 +
1.154 + function buildButton(buttonTitle, buttonNumber) {
1.155 + let ret = {};
1.156 + let buttonPosition = buttonPositions[buttonNumber];
1.157 + let mask = 0xff * buttonPosition; // 8 bit mask
1.158 + let titleType = (buttonFlags & mask) / buttonPosition;
1.159 +
1.160 + ret.messageType = 'builtin';
1.161 + switch(titleType) {
1.162 + case Ci.nsIPrompt.BUTTON_TITLE_OK:
1.163 + ret.message = 'ok';
1.164 + break;
1.165 + case Ci.nsIPrompt.BUTTON_TITLE_CANCEL:
1.166 + ret.message = 'cancel';
1.167 + break;
1.168 + case Ci.nsIPrompt.BUTTON_TITLE_YES:
1.169 + ret.message = 'yes';
1.170 + break;
1.171 + case Ci.nsIPrompt.BUTTON_TITLE_NO:
1.172 + ret.message = 'no';
1.173 + break;
1.174 + case Ci.nsIPrompt.BUTTON_TITLE_SAVE:
1.175 + ret.message = 'save';
1.176 + break;
1.177 + case Ci.nsIPrompt.BUTTON_TITLE_DONT_SAVE:
1.178 + ret.message = 'dontsave';
1.179 + break;
1.180 + case Ci.nsIPrompt.BUTTON_TITLE_REVERT:
1.181 + ret.message = 'revert';
1.182 + break;
1.183 + case Ci.nsIPrompt.BUTTON_TITLE_IS_STRING:
1.184 + ret.message = buttonTitle;
1.185 + ret.messageType = 'custom';
1.186 + break;
1.187 + default:
1.188 + // This button is not shown.
1.189 + return;
1.190 + }
1.191 +
1.192 + // If this is the default button, set r.defaultButton to
1.193 + // the index of this button in the array. This value is going to be
1.194 + // exposed to the embedder.
1.195 + if (defaultButton === buttonNumber) {
1.196 + r.defaultButton = r.buttons.length;
1.197 + }
1.198 + r.buttons.push(ret);
1.199 + r.indexToButtonNumberMap.push(buttonNumber);
1.200 + }
1.201 +
1.202 + buildButton(button0Title, 0);
1.203 + buildButton(button1Title, 1);
1.204 + buildButton(button2Title, 2);
1.205 +
1.206 + // If defaultButton is still -1 here, it means the default button won't
1.207 + // be shown.
1.208 + if (r.defaultButton === -1) {
1.209 + throw new Components.Exception("Default button won't be shown",
1.210 + Cr.NS_ERROR_FAILURE);
1.211 + }
1.212 +
1.213 + return r;
1.214 + },
1.215 +};
1.216 +
1.217 +
1.218 +function BrowserElementAuthPrompt() {
1.219 +}
1.220 +
1.221 +BrowserElementAuthPrompt.prototype = {
1.222 + QueryInterface: XPCOMUtils.generateQI([Ci.nsIAuthPrompt2]),
1.223 +
1.224 + promptAuth: function promptAuth(channel, level, authInfo) {
1.225 + throw Cr.NS_ERROR_NOT_IMPLEMENTED;
1.226 + },
1.227 +
1.228 + asyncPromptAuth: function asyncPromptAuth(channel, callback, context, level, authInfo) {
1.229 + debug("asyncPromptAuth");
1.230 +
1.231 + // The cases that we don't support now.
1.232 + if ((authInfo.flags & Ci.nsIAuthInformation.AUTH_PROXY) &&
1.233 + (authInfo.flags & Ci.nsIAuthInformation.ONLY_PASSWORD)) {
1.234 + throw Cr.NS_ERROR_FAILURE;
1.235 + }
1.236 +
1.237 + let frame = this._getFrameFromChannel(channel);
1.238 + if (!frame) {
1.239 + debug("Cannot get frame, asyncPromptAuth fail");
1.240 + throw Cr.NS_ERROR_FAILURE;
1.241 + }
1.242 +
1.243 + let browserElementParent =
1.244 + BrowserElementPromptService.getBrowserElementParentForFrame(frame);
1.245 +
1.246 + if (!browserElementParent) {
1.247 + debug("Failed to load browser element parent.");
1.248 + throw Cr.NS_ERROR_FAILURE;
1.249 + }
1.250 +
1.251 + let consumer = {
1.252 + QueryInterface: XPCOMUtils.generateQI([Ci.nsICancelable]),
1.253 + callback: callback,
1.254 + context: context,
1.255 + cancel: function() {
1.256 + this.callback.onAuthCancelled(this.context, false);
1.257 + this.callback = null;
1.258 + this.context = null;
1.259 + }
1.260 + };
1.261 +
1.262 + let [hostname, httpRealm] = this._getAuthTarget(channel, authInfo);
1.263 + let hashKey = level + "|" + hostname + "|" + httpRealm;
1.264 + let asyncPrompt = this._asyncPrompts[hashKey];
1.265 + if (asyncPrompt) {
1.266 + asyncPrompt.consumers.push(consumer);
1.267 + return consumer;
1.268 + }
1.269 +
1.270 + asyncPrompt = {
1.271 + consumers: [consumer],
1.272 + channel: channel,
1.273 + authInfo: authInfo,
1.274 + level: level,
1.275 + inProgress: false,
1.276 + browserElementParent: browserElementParent
1.277 + };
1.278 +
1.279 + this._asyncPrompts[hashKey] = asyncPrompt;
1.280 + this._doAsyncPrompt();
1.281 + return consumer;
1.282 + },
1.283 +
1.284 + // Utilities for nsIAuthPrompt2 ----------------
1.285 +
1.286 + _asyncPrompts: {},
1.287 + _asyncPromptInProgress: new WeakMap(),
1.288 + _doAsyncPrompt: function() {
1.289 + // Find the key of a prompt whose browser element parent does not have
1.290 + // async prompt in progress.
1.291 + let hashKey = null;
1.292 + for (let key in this._asyncPrompts) {
1.293 + let prompt = this._asyncPrompts[key];
1.294 + if (!this._asyncPromptInProgress.get(prompt.browserElementParent)) {
1.295 + hashKey = key;
1.296 + break;
1.297 + }
1.298 + }
1.299 +
1.300 + // Didn't find an available prompt, so just return.
1.301 + if (!hashKey)
1.302 + return;
1.303 +
1.304 + let prompt = this._asyncPrompts[hashKey];
1.305 + let [hostname, httpRealm] = this._getAuthTarget(prompt.channel,
1.306 + prompt.authInfo);
1.307 +
1.308 + this._asyncPromptInProgress.set(prompt.browserElementParent, true);
1.309 + prompt.inProgress = true;
1.310 +
1.311 + let self = this;
1.312 + let callback = function(ok, username, password) {
1.313 + debug("Async auth callback is called, ok = " +
1.314 + ok + ", username = " + username);
1.315 +
1.316 + // Here we got the username and password provided by embedder, or
1.317 + // ok = false if the prompt was cancelled by embedder.
1.318 + delete self._asyncPrompts[hashKey];
1.319 + prompt.inProgress = false;
1.320 + self._asyncPromptInProgress.delete(prompt.browserElementParent);
1.321 +
1.322 + // Fill authentication information with username and password provided
1.323 + // by user.
1.324 + let flags = prompt.authInfo.flags;
1.325 + if (username) {
1.326 + if (flags & Ci.nsIAuthInformation.NEED_DOMAIN) {
1.327 + // Domain is separated from username by a backslash
1.328 + let idx = username.indexOf("\\");
1.329 + if (idx == -1) {
1.330 + prompt.authInfo.username = username;
1.331 + } else {
1.332 + prompt.authInfo.domain = username.substring(0, idx);
1.333 + prompt.authInfo.username = username.substring(idx + 1);
1.334 + }
1.335 + } else {
1.336 + prompt.authInfo.username = username;
1.337 + }
1.338 + }
1.339 +
1.340 + if (password) {
1.341 + prompt.authInfo.password = password;
1.342 + }
1.343 +
1.344 + for each (let consumer in prompt.consumers) {
1.345 + if (!consumer.callback) {
1.346 + // Not having a callback means that consumer didn't provide it
1.347 + // or canceled the notification.
1.348 + continue;
1.349 + }
1.350 +
1.351 + try {
1.352 + if (ok) {
1.353 + debug("Ok, calling onAuthAvailable to finish auth");
1.354 + consumer.callback.onAuthAvailable(consumer.context, prompt.authInfo);
1.355 + } else {
1.356 + debug("Cancelled, calling onAuthCancelled to finish auth.");
1.357 + consumer.callback.onAuthCancelled(consumer.context, true);
1.358 + }
1.359 + } catch (e) { /* Throw away exceptions caused by callback */ }
1.360 + }
1.361 +
1.362 + // Process the next prompt, if one is pending.
1.363 + self._doAsyncPrompt();
1.364 + };
1.365 +
1.366 + let runnable = {
1.367 + run: function() {
1.368 + // Call promptAuth of browserElementParent, to show the prompt.
1.369 + prompt.browserElementParent.promptAuth(
1.370 + self._createAuthDetail(prompt.channel, prompt.authInfo),
1.371 + callback);
1.372 + }
1.373 + }
1.374 +
1.375 + Services.tm.currentThread.dispatch(runnable, Ci.nsIThread.DISPATCH_NORMAL);
1.376 + },
1.377 +
1.378 + _getFrameFromChannel: function(channel) {
1.379 + let loadContext = channel.notificationCallbacks.getInterface(Ci.nsILoadContext);
1.380 + return loadContext.topFrameElement;
1.381 + },
1.382 +
1.383 + _createAuthDetail: function(channel, authInfo) {
1.384 + let [hostname, httpRealm] = this._getAuthTarget(channel, authInfo);
1.385 + return {
1.386 + host: hostname,
1.387 + realm: httpRealm,
1.388 + username: authInfo.username,
1.389 + isOnlyPassword: !!(authInfo.flags & Ci.nsIAuthInformation.ONLY_PASSWORD)
1.390 + };
1.391 + },
1.392 +
1.393 + _getAuthTarget : function (channel, authInfo) {
1.394 + let hostname = this._getFormattedHostname(channel.URI);
1.395 +
1.396 + // If a HTTP WWW-Authenticate header specified a realm, that value
1.397 + // will be available here. If it wasn't set or wasn't HTTP, we'll use
1.398 + // the formatted hostname instead.
1.399 + let realm = authInfo.realm;
1.400 + if (!realm)
1.401 + realm = hostname;
1.402 +
1.403 + return [hostname, realm];
1.404 + },
1.405 +
1.406 + _getFormattedHostname : function(uri) {
1.407 + let scheme = uri.scheme;
1.408 + let hostname = scheme + "://" + uri.host;
1.409 +
1.410 + // If the URI explicitly specified a port, only include it when
1.411 + // it's not the default. (We never want "http://foo.com:80")
1.412 + let port = uri.port;
1.413 + if (port != -1) {
1.414 + let handler = Services.io.getProtocolHandler(scheme);
1.415 + if (port != handler.defaultPort)
1.416 + hostname += ":" + port;
1.417 + }
1.418 + return hostname;
1.419 + }
1.420 +};
1.421 +
1.422 +
1.423 +function AuthPromptWrapper(oldImpl, browserElementImpl) {
1.424 + this._oldImpl = oldImpl;
1.425 + this._browserElementImpl = browserElementImpl;
1.426 +}
1.427 +
1.428 +AuthPromptWrapper.prototype = {
1.429 + QueryInterface: XPCOMUtils.generateQI([Ci.nsIAuthPrompt2]),
1.430 + promptAuth: function(channel, level, authInfo) {
1.431 + if (this._canGetParentElement(channel)) {
1.432 + return this._browserElementImpl.promptAuth(channel, level, authInfo);
1.433 + } else {
1.434 + return this._oldImpl.promptAuth(channel, level, authInfo);
1.435 + }
1.436 + },
1.437 +
1.438 + asyncPromptAuth: function(channel, callback, context, level, authInfo) {
1.439 + if (this._canGetParentElement(channel)) {
1.440 + return this._browserElementImpl.asyncPromptAuth(channel, callback, context, level, authInfo);
1.441 + } else {
1.442 + return this._oldImpl.asyncPromptAuth(channel, callback, context, level, authInfo);
1.443 + }
1.444 + },
1.445 +
1.446 + _canGetParentElement: function(channel) {
1.447 + try {
1.448 + let frame = channel.notificationCallbacks.getInterface(Ci.nsILoadContext).topFrameElement;
1.449 + if (!frame)
1.450 + return false;
1.451 +
1.452 + if (!BrowserElementPromptService.getBrowserElementParentForFrame(frame))
1.453 + return false;
1.454 +
1.455 + return true;
1.456 + } catch (e) {
1.457 + return false;
1.458 + }
1.459 + }
1.460 +};
1.461 +
1.462 +function BrowserElementPromptFactory(toWrap) {
1.463 + this._wrapped = toWrap;
1.464 +}
1.465 +
1.466 +BrowserElementPromptFactory.prototype = {
1.467 + classID: Components.ID("{24f3d0cf-e417-4b85-9017-c9ecf8bb1299}"),
1.468 + QueryInterface: XPCOMUtils.generateQI([Ci.nsIPromptFactory]),
1.469 +
1.470 + _mayUseNativePrompt: function() {
1.471 + try {
1.472 + return Services.prefs.getBoolPref("browser.prompt.allowNative");
1.473 + } catch (e) {
1.474 + // This properity is default to true.
1.475 + return true;
1.476 + }
1.477 + },
1.478 +
1.479 + _getNativePromptIfAllowed: function(win, iid, err) {
1.480 + if (this._mayUseNativePrompt())
1.481 + return this._wrapped.getPrompt(win, iid);
1.482 + else {
1.483 + // Not allowed, throw an exception.
1.484 + throw err;
1.485 + }
1.486 + },
1.487 +
1.488 + getPrompt: function(win, iid) {
1.489 + // It is possible for some object to get a prompt without passing
1.490 + // valid reference of window, like nsNSSComponent. In such case, we
1.491 + // should just fall back to the native prompt service
1.492 + if (!win)
1.493 + return this._getNativePromptIfAllowed(win, iid, Cr.NS_ERROR_INVALID_ARG);
1.494 +
1.495 + if (iid.number != Ci.nsIPrompt.number &&
1.496 + iid.number != Ci.nsIAuthPrompt2.number) {
1.497 + debug("We don't recognize the requested IID (" + iid + ", " +
1.498 + "allowed IID: " +
1.499 + "nsIPrompt=" + Ci.nsIPrompt + ", " +
1.500 + "nsIAuthPrompt2=" + Ci.nsIAuthPrompt2 + ")");
1.501 + return this._getNativePromptIfAllowed(win, iid, Cr.NS_ERROR_INVALID_ARG);
1.502 + }
1.503 +
1.504 + // Try to find a BrowserElementChild for the window.
1.505 + let browserElementChild =
1.506 + BrowserElementPromptService.getBrowserElementChildForWindow(win);
1.507 +
1.508 + if (iid.number === Ci.nsIAuthPrompt2.number) {
1.509 + debug("Caller requests an instance of nsIAuthPrompt2.");
1.510 +
1.511 + if (browserElementChild) {
1.512 + // If we are able to get a BrowserElementChild, it means that
1.513 + // the auth prompt is for a mozbrowser. Therefore we don't need to
1.514 + // fall back.
1.515 + return new BrowserElementAuthPrompt().QueryInterface(iid);
1.516 + }
1.517 +
1.518 + // Because nsIAuthPrompt2 is called in parent process. If caller
1.519 + // wants nsIAuthPrompt2 and we cannot get BrowserElementchild,
1.520 + // it doesn't mean that we should fallback. It is possible that we can
1.521 + // get the BrowserElementParent from nsIChannel that passed to
1.522 + // functions of nsIAuthPrompt2.
1.523 + if (this._mayUseNativePrompt()) {
1.524 + return new AuthPromptWrapper(
1.525 + this._wrapped.getPrompt(win, iid),
1.526 + new BrowserElementAuthPrompt().QueryInterface(iid))
1.527 + .QueryInterface(iid);
1.528 + } else {
1.529 + // Falling back is not allowed, so we don't need wrap the
1.530 + // BrowserElementPrompt.
1.531 + return new BrowserElementAuthPrompt().QueryInterface(iid);
1.532 + }
1.533 + }
1.534 +
1.535 + if (!browserElementChild) {
1.536 + debug("We can't find a browserElementChild for " +
1.537 + win + ", " + win.location);
1.538 + return this._getNativePromptIfAllowed(win, iid, Cr.NS_ERROR_FAILURE);
1.539 + }
1.540 +
1.541 + debug("Returning wrapped getPrompt for " + win);
1.542 + return new BrowserElementPrompt(win, browserElementChild)
1.543 + .QueryInterface(iid);
1.544 + }
1.545 +};
1.546 +
1.547 +this.BrowserElementPromptService = {
1.548 + QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver,
1.549 + Ci.nsISupportsWeakReference]),
1.550 +
1.551 + _initialized: false,
1.552 +
1.553 + _init: function() {
1.554 + if (this._initialized) {
1.555 + return;
1.556 + }
1.557 +
1.558 + // If the pref is disabled, do nothing except wait for the pref to change.
1.559 + if (!this._browserFramesPrefEnabled()) {
1.560 + var prefs = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefBranch);
1.561 + prefs.addObserver(BROWSER_FRAMES_ENABLED_PREF, this, /* ownsWeak = */ true);
1.562 + return;
1.563 + }
1.564 +
1.565 + this._initialized = true;
1.566 + this._browserElementParentMap = new WeakMap();
1.567 +
1.568 + var os = Cc["@mozilla.org/observer-service;1"].getService(Ci.nsIObserverService);
1.569 + os.addObserver(this, "outer-window-destroyed", /* ownsWeak = */ true);
1.570 +
1.571 + // Wrap the existing @mozilla.org/prompter;1 implementation.
1.572 + var contractID = "@mozilla.org/prompter;1";
1.573 + var oldCID = Cm.contractIDToCID(contractID);
1.574 + var newCID = BrowserElementPromptFactory.prototype.classID;
1.575 + var oldFactory = Cm.getClassObject(Cc[contractID], Ci.nsIFactory);
1.576 +
1.577 + if (oldCID == newCID) {
1.578 + debug("WARNING: Wrapped prompt factory is already installed!");
1.579 + return;
1.580 + }
1.581 +
1.582 + Cm.unregisterFactory(oldCID, oldFactory);
1.583 +
1.584 + var oldInstance = oldFactory.createInstance(null, Ci.nsIPromptFactory);
1.585 + var newInstance = new BrowserElementPromptFactory(oldInstance);
1.586 +
1.587 + var newFactory = {
1.588 + createInstance: function(outer, iid) {
1.589 + if (outer != null) {
1.590 + throw Cr.NS_ERROR_NO_AGGREGATION;
1.591 + }
1.592 + return newInstance.QueryInterface(iid);
1.593 + }
1.594 + };
1.595 + Cm.registerFactory(newCID,
1.596 + "BrowserElementPromptService's prompter;1 wrapper",
1.597 + contractID, newFactory);
1.598 +
1.599 + debug("Done installing new prompt factory.");
1.600 + },
1.601 +
1.602 + _getOuterWindowID: function(win) {
1.603 + return win.QueryInterface(Ci.nsIInterfaceRequestor)
1.604 + .getInterface(Ci.nsIDOMWindowUtils)
1.605 + .outerWindowID;
1.606 + },
1.607 +
1.608 + _browserElementChildMap: {},
1.609 + mapWindowToBrowserElementChild: function(win, browserElementChild) {
1.610 + this._browserElementChildMap[this._getOuterWindowID(win)] = browserElementChild;
1.611 + },
1.612 +
1.613 + getBrowserElementChildForWindow: function(win) {
1.614 + // We only have a mapping for <iframe mozbrowser>s, not their inner
1.615 + // <iframes>, so we look up win.top below. window.top (when called from
1.616 + // script) respects <iframe mozbrowser> boundaries.
1.617 + return this._browserElementChildMap[this._getOuterWindowID(win.top)];
1.618 + },
1.619 +
1.620 + mapFrameToBrowserElementParent: function(frame, browserElementParent) {
1.621 + this._browserElementParentMap.set(frame, browserElementParent);
1.622 + },
1.623 +
1.624 + getBrowserElementParentForFrame: function(frame) {
1.625 + return this._browserElementParentMap.get(frame);
1.626 + },
1.627 +
1.628 + _observeOuterWindowDestroyed: function(outerWindowID) {
1.629 + let id = outerWindowID.QueryInterface(Ci.nsISupportsPRUint64).data;
1.630 + debug("observeOuterWindowDestroyed " + id);
1.631 + delete this._browserElementChildMap[outerWindowID.data];
1.632 + },
1.633 +
1.634 + _browserFramesPrefEnabled: function() {
1.635 + var prefs = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefBranch);
1.636 + try {
1.637 + return prefs.getBoolPref(BROWSER_FRAMES_ENABLED_PREF);
1.638 + }
1.639 + catch(e) {
1.640 + return false;
1.641 + }
1.642 + },
1.643 +
1.644 + observe: function(subject, topic, data) {
1.645 + switch(topic) {
1.646 + case NS_PREFBRANCH_PREFCHANGE_TOPIC_ID:
1.647 + if (data == BROWSER_FRAMES_ENABLED_PREF) {
1.648 + this._init();
1.649 + }
1.650 + break;
1.651 + case "outer-window-destroyed":
1.652 + this._observeOuterWindowDestroyed(subject);
1.653 + break;
1.654 + default:
1.655 + debug("Observed unexpected topic " + topic);
1.656 + }
1.657 + }
1.658 +};
1.659 +
1.660 +BrowserElementPromptService._init();
