Fixed prompts factory regression on Android.

src/ui/Prompts.js

@@ -39,7 +39,15 @@ var Prompts = (() => {
       this.close();
 
       let url = browser.runtime.getURL("ui/prompt.html");
+
+      if (!("windows" in browser)) {
+        // Android, most likely
+        this.currentTab = await browser.tabs.create({url});
+        return;
+      }
+
       let {width, height, left, top, parent } = data.features;
+
       let options = {
         url,
         type: "popup",
@@ -53,32 +61,23 @@ var Prompts = (() => {
         options.allowScriptsToClose = true;
       }
 
-      if (!("windows" in browser)) {
-        // Android, most likely
-        this.currentTab = await browser.tabs.create({url});
-        return;
-      }
-
-      const centerOnParent = (dim) => {
-        const { width, height } = dim;
-        dim.left =
-          left === undefined
-            ? Math.round(parent.left + (parent.width - width) / 2)
-            : left;
-        dim.top =
-          top === undefined
-            ? Math.round(parent.top + (parent.height - height) / 2)
-            : top;
-        return dim;
+      const centerOnParent = bounds => {
+        for (const [p, s] of [["left", "width"], ["top", "height"]]) {
+          if (bounds[s] && bounds[p] === undefined) {
+            bounds[p] = Math.round(parent[p] + (parent[s] - bounds[s]) / 2);
+          }
+        }
+        return bounds;
       };
 
       if (width && height) {
-        let size = { width, height };
-        url += `?size=${JSON.stringify(size)}`;
+        const bounds = { width, height, left, top };
+        url += `?winbounds=${JSON.stringify(bounds)}`;
         if (parent) {
-          ({ left, top } = Object.assign(options, centerOnParent(size)));
+          ({ left, top } = Object.assign(options, centerOnParent(bounds)));
         }
       }
+
       debug("Prompt pre-opening options", options, left, top, width, height); // DEV_ONLY
       let popup = (this.currentWindow = await browser.windows.create(options));
 
@@ -93,7 +92,7 @@ var Prompts = (() => {
         if (top === undefined) ({ top } = popup);
       }
 
-      debug("Prompt post-opening options", popup, options, left, top, width, height);
+      debug("Prompt post-opening options", popup, options, left, top, width, height); // DEV_ONLY
 
       // work around for resistFingerprinting new window rounding (https://bugzilla.mozilla.org/show_bug.cgi?id=1330882)
       if (

src/ui/prompt.js

@@ -139,10 +139,8 @@
       await browser.windows.update(win.id, {
         height: win.height + delta,
         top: win.top - Math.round(delta / 2),
-        focused: false
       });
     }
-    await browser.windows.update(win.id, {focused: true});
   }
   if (document.readyState === "complete") {
     fitHeight();

src/ui/resize_hack.js

@@ -24,19 +24,19 @@ if ("windows" in browser) document.addEventListener("DOMContentLoaded", async e
   // See https://bugzilla.mozilla.org/show_bug.cgi?id=1402110
   let win = await browser.windows.getCurrent({populate: true});
   if (win.tabs[0].url === document.URL) {
-    let size = decodeURIComponent(location.search).match(/\bsize=(\{\s*"width":[^}]+\})/);
+    let bounds = decodeURIComponent(location.href).match(/\bwinbounds=(\{[^}]*"width":[^}]+\})/);
     try {
-      size = size && JSON.parse(size[1]);
+      bounds = bounds && JSON.parse(bounds[1]);
     } catch (e) {
-      size = null;
+      bounds = null;
     }
-    let {width, height} = size || win;
-    debug("Resize hack", win, size, width, height); // DEV_ONLY
+    let {width} = bounds || win;
+    debug("Resize hack", win, bounds); // DEV_ONLY
     await browser.windows.update(win.id, {
-      width: width + 1, height
+      width: width + 1
     });
     await browser.windows.update(win.id, {
-      width, height
+      width
     });
   }
 });