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-rw-r--r--mobile/android/components/geckoview/GeckoViewPrompter.sys.mjs206
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diff --git a/mobile/android/components/geckoview/GeckoViewPrompter.sys.mjs b/mobile/android/components/geckoview/GeckoViewPrompter.sys.mjs
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index 0000000000..f81c155678
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+++ b/mobile/android/components/geckoview/GeckoViewPrompter.sys.mjs
@@ -0,0 +1,206 @@
+/* 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/. */
+
+import { GeckoViewUtils } from "resource://gre/modules/GeckoViewUtils.sys.mjs";
+
+const { debug, warn } = GeckoViewUtils.initLogging("GeckoViewPrompter");
+
+export class GeckoViewPrompter {
+ constructor(aParent) {
+ this.id = Services.uuid.generateUUID().toString().slice(1, -1); // Discard surrounding braces
+
+ if (aParent) {
+ if (Window.isInstance(aParent)) {
+ this._domWin = aParent;
+ } else if (aParent.window) {
+ this._domWin = aParent.window;
+ } else {
+ this._domWin =
+ aParent.embedderElement && aParent.embedderElement.ownerGlobal;
+ }
+ }
+
+ if (!this._domWin) {
+ this._domWin = Services.wm.getMostRecentWindow("navigator:geckoview");
+ }
+
+ this._innerWindowId =
+ this._domWin?.browsingContext.currentWindowContext.innerWindowId;
+ }
+
+ get domWin() {
+ return this._domWin;
+ }
+
+ get prompterActor() {
+ const actor = this.domWin?.windowGlobalChild.getActor("GeckoViewPrompter");
+ return actor;
+ }
+
+ _changeModalState(aEntering) {
+ if (!this._domWin) {
+ // Allow not having a DOM window.
+ return true;
+ }
+ // Accessing the document object can throw if this window no longer exists. See bug 789888.
+ try {
+ const winUtils = this._domWin.windowUtils;
+ if (!aEntering) {
+ winUtils.leaveModalState();
+ }
+
+ const event = this._domWin.document.createEvent("Events");
+ event.initEvent(
+ aEntering ? "DOMWillOpenModalDialog" : "DOMModalDialogClosed",
+ true,
+ true
+ );
+ winUtils.dispatchEventToChromeOnly(this._domWin, event);
+
+ if (aEntering) {
+ winUtils.enterModalState();
+ }
+ return true;
+ } catch (ex) {
+ console.error("Failed to change modal state:", ex);
+ }
+ return false;
+ }
+
+ _dismissUi() {
+ this.prompterActor?.dismissPrompt(this);
+ }
+
+ accept(aInputText = this.inputText) {
+ if (this.callback) {
+ let acceptMsg = {};
+ switch (this.message.type) {
+ case "alert":
+ acceptMsg = null;
+ break;
+ case "button":
+ acceptMsg.button = 0;
+ break;
+ case "text":
+ acceptMsg.text = aInputText;
+ break;
+ default:
+ acceptMsg = null;
+ break;
+ }
+ this.callback(acceptMsg);
+ // Notify the UI that this prompt should be hidden.
+ this._dismissUi();
+ }
+ }
+
+ dismiss() {
+ this.callback(null);
+ // Notify the UI that this prompt should be hidden.
+ this._dismissUi();
+ }
+
+ getPromptType() {
+ switch (this.message.type) {
+ case "alert":
+ return this.message.checkValue ? "alertCheck" : "alert";
+ case "button":
+ return this.message.checkValue ? "confirmCheck" : "confirm";
+ case "text":
+ return this.message.checkValue ? "promptCheck" : "prompt";
+ default:
+ return this.message.type;
+ }
+ }
+
+ getPromptText() {
+ return this.message.msg;
+ }
+
+ getInputText() {
+ return this.inputText;
+ }
+
+ setInputText(aInput) {
+ this.inputText = aInput;
+ }
+
+ /**
+ * Shows a native prompt, and then spins the event loop for this thread while we wait
+ * for a response
+ */
+ showPrompt(aMsg) {
+ let result = undefined;
+ if (!this._domWin || !this._changeModalState(/* aEntering */ true)) {
+ return result;
+ }
+ try {
+ this.asyncShowPrompt(aMsg, res => (result = res));
+
+ // Spin this thread while we wait for a result
+ Services.tm.spinEventLoopUntil(
+ "GeckoViewPrompter.jsm:showPrompt",
+ () => this._domWin.closed || result !== undefined
+ );
+ } finally {
+ this._changeModalState(/* aEntering */ false);
+ }
+ return result;
+ }
+
+ checkInnerWindow() {
+ // Checks that the innerWindow where this prompt was created still matches
+ // the current innerWindow.
+ // This checks will fail if the page navigates away, making this prompt
+ // obsolete.
+ return (
+ this._innerWindowId ===
+ this._domWin.browsingContext.currentWindowContext.innerWindowId
+ );
+ }
+
+ asyncShowPromptPromise(aMsg) {
+ return new Promise(resolve => {
+ this.asyncShowPrompt(aMsg, resolve);
+ });
+ }
+
+ async asyncShowPrompt(aMsg, aCallback) {
+ this.message = aMsg;
+ this.inputText = aMsg.value;
+ this.callback = aCallback;
+
+ aMsg.id = this.id;
+
+ let response = null;
+ try {
+ if (this.checkInnerWindow()) {
+ response = await this.prompterActor.prompt(this, aMsg);
+ }
+ } catch (error) {
+ // Nothing we can do really, we will treat this as a dismiss.
+ warn`Error while prompting: ${error}`;
+ }
+
+ if (!this.checkInnerWindow()) {
+ // Page has navigated away, let's dismiss the prompt
+ aCallback(null);
+ } else {
+ aCallback(response);
+ }
+ // This callback object is tied to the Java garbage collector because
+ // it is invoked from Java. Manually release the target callback
+ // here; otherwise we may hold onto resources for too long, because
+ // we would be relying on both the Java and the JS garbage collectors
+ // to run.
+ aMsg = undefined;
+ aCallback = undefined;
+ }
+
+ update(aMsg) {
+ this.message = aMsg;
+ aMsg.id = this.id;
+ this.prompterActor?.updatePrompt(aMsg);
+ }
+}