Fixed browser panels, they are not tabs anymore

src/browser/components/places/content/zenNewWebPanel.js

@@ -0,0 +1,43 @@
+
+var gZenNewWebPanel = {
+  init: function() {
+    document.addEventListener("dialogaccept", this.handleDialogAccept.bind(this));
+  },
+
+  handleURLChange: async function(aURL) {
+    try {
+      let url = new URL(aURL.value);
+    } catch (_) {
+      // TODO: Show error message
+      return;
+    }
+  },
+
+  handleDialogAccept: async function(aEvent) {
+    document.commandDispatcher.focusedElement?.blur();
+    let url = document.getElementById("zenNWP_url");
+    let ua = document.getElementById("zenNWP_userAgent");
+    if (!url || !ua) {
+      return;
+    }
+    try {
+      new URL(url.value);
+    } catch (_) {
+      return;
+    }
+    if (!url.value || !ua.value) {
+      return;
+    }
+    let newSite = {
+      url: url.value,
+      ua: ua.value,
+    };
+    let currentData = JSON.parse(Services.prefs.getStringPref("zen.sidebar.data"));
+    let newName = "p" + new Date().getTime();
+    currentData.index.push(newName);
+    currentData.data[newName] = newSite;
+    Services.prefs.setStringPref("zen.sidebar.data", JSON.stringify(currentData));
+  },
+};
+
+gZenNewWebPanel.init();

src/browser/components/places/content/zenNewWebPanel.xhtml

@@ -0,0 +1,44 @@
+<?xml version="1.0"?>
+
+<!-- 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/. -->
+
+<!DOCTYPE window>
+
+<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        xmlns:html="http://www.w3.org/1999/xhtml"
+        id="zenNewWebPanel"
+        headerparent="zenNewWebPanelDialog"
+        style="min-width: 40em;">
+<dialog id="zenNewWebPanelDialog"
+        buttons="accept, cancel">
+
+  <linkset>
+    <html:link rel="stylesheet" href="chrome://global/skin/global.css" />
+    <html:link
+      rel="stylesheet"
+      href="chrome://global/content/commonDialog.css"
+    />
+    <html:link rel="stylesheet" href="chrome://global/skin/commonDialog.css" />
+
+    <html:link rel="localization" href="browser/zenNewWebPanel.ftl"/>
+    <script src="chrome://browser/content/zenThemeModifier.js"></script>
+  </linkset>
+
+  <script src="chrome://browser/content/places/zenNewWebPanel.js"/>
+
+  <label data-l10n-id="zen-new-web-panel-url"
+    control="zenNWP_url"/>
+  <html:input id="zenNWP_url"
+        type="url" onchange="gZenNewWebPanel.handleURLChange(this);"/>
+
+  <hbox flex="1" style="margin: 10px 5px;">
+    <html:input id="zenNWP_userAgent"
+          type="checkbox"/>
+    <label data-l10n-id="zen-new-web-panel-user-agent"
+      control="zenNWP_userAgent" for="zenNWP_userAgent"/>
+  </hbox>
+
+</dialog>
+</window>

src/browser/components/places/jar-mn.patch

@@ -0,0 +1,10 @@
+diff --git a/browser/components/places/jar.mn b/browser/components/places/jar.mn
+index 7334914664484267ccf80eeeb2917c2001a1acaf..e0636a13798d6fbf41cbf69e51e460822b00ab1a 100644
+--- a/browser/components/places/jar.mn
++++ b/browser/components/places/jar.mn
+@@ -25,3 +25,5 @@ browser.jar:
+     content/browser/places/interactionsViewer.html       (metadataViewer/interactionsViewer.html)
+     content/browser/places/interactionsViewer.js         (metadataViewer/interactionsViewer.js)
+ #endif
++    content/browser/places/zenNewWebPanel.xhtml      (content/zenNewWebPanel.xhtml)
++    content/browser/places/zenNewWebPanel.js         (content/zenNewWebPanel.js)