Fix broken NoScript dialogs when browser.privatebrowsing.autostart = true (issue#259, thanks foenix for reporting).

src/ui/Prompts.js

@@ -23,6 +23,16 @@ var Prompts = (() => {
   var promptData;
   var backlog = [];
 
+  Messages.addHandler({
+    getPromptData() { return Prompts.promptData },
+    promptDone(data) {
+      let promptData = promptDataMap.get(data.id);
+      if (promptData) {
+        Object.assign(promptData, data).done();
+      }
+    }
+  });
+
   class WindowManager {
     async open(data) {
       promptData = data;
@@ -82,6 +92,8 @@ var Prompts = (() => {
   }
 
   var winMan = new WindowManager();
+  var id = 0;
+  var promptDataMap = new Map();
   var Prompts = {
     DEFAULTS: {
       title: "",
@@ -97,7 +109,9 @@ var Prompts = (() => {
     async prompt(features) {
       features = Object.assign({}, this.DEFAULTS, features || {});
       return new Promise((resolve, reject) => {
+        ++id;
         let data = {
+          id,
           features,
           result: {
             button: -1,
@@ -105,6 +119,7 @@ var Prompts = (() => {
             option: null,
           },
           done() {
+            promptDataMap.delete(this.id);
             this.done = () => {};
             winMan.close();
             resolve(this.result);
@@ -116,6 +131,7 @@ var Prompts = (() => {
             }
           }
         };
+        promptDataMap.set(id, data);
         if (promptData) {
           backlog.push(data);
           switch(promptData.features.multiple) {

src/ui/prompt.html

@@ -16,6 +16,7 @@ SPDX-License-Identifier: GPL-3.0-or-later
 <script src="/nscl/common/include.js"></script>
 <script src="/nscl/common/log.js"></script>
 <script src="/nscl/common/locale.js"></script>
+<script src="/nscl/common/Messages.js"></script>
 <script src="/ui/resize_hack.js"></script>
 <script src="/common/themes.js"></script>
 </head>

src/ui/prompt.js

@@ -20,16 +20,16 @@
 
 (async () => {
   document.documentElement.classList.toggle("mobile", !!UA.mobile);
-  window.bg = await browser.runtime.getBackgroundPage();
-  ["Prompts"]
-    .forEach(p => window[p] = bg[p]);
-  let data = Prompts.promptData;
+  let data = await Messages.send("getPromptData");
   debug(data);
   if (!data) {
     error("Missing promptData");
     window.close();
     return;
   }
+  let done = () => {
+    Messages.send("promptDone", data);
+  }
   let {title, message, options, checks, buttons} = data.features;
 
   function labelFor(el, text) {
@@ -99,7 +99,7 @@
   renderInputs("#checks", checks, "checkbox", "flag");
   renderInputs("#buttons", buttons, "button", "button");
   addEventListener("unload", e => {
-    data.done();
+    done();
   });
 
   let buttonClicked = e => {
@@ -109,7 +109,7 @@
     result.option = option && parseInt(option.value);
     result.checks = [...document.querySelectorAll('#checks [type="checkbox"]:checked')]
       .map(c => parseInt(c.value));
-    data.done();
+    done();
   };
   for (let b of document.querySelectorAll("#buttons button")) {
     b.addEventListener("click", buttonClicked);