chore: Refactor ZenSidebarManager and ZenUIManager to improve tab handling

src/browser/base/content/ZenSidebarManager.mjs

@@ -438,8 +438,7 @@ var gZenBrowserManagerSidebar = {
     let data = this.sidebarData;
     let panel = data.data[this.contextTab];
     let url = (browser == null) ? panel.url : browser.currentURI.spec;
-    let tab = gBrowser.addTrustedTab(url);    
-    gBrowser.selectedTab = tab;
+    gZenUIManager.openAndChangeToTab(url);
     this.close();
   },
 

src/browser/base/content/ZenUIManager.mjs

@@ -1,4 +1,12 @@
 
 var gZenUIManager = {
-
+  openAndChangeToTab(url, options) {
+    if (window.ownerGlobal.parent) {
+      let tab = window.ownerGlobal.parent.gBrowser.addTrustedTab(url, options);
+      window.ownerGlobal.parent.gBrowser.selectedTab = tab;
+      return;
+    }
+    let tab = window.gBrowser.addTrustedTab(url, options);
+    window.gBrowser.selectedTab = tab;
+  }
 };

src/browser/components/zen-welcome/welcome.js

@@ -14,9 +14,12 @@ ChromeUtils.defineModuleGetter(
   this,
   'ExtensionSettingsStore',
   'resource://gre/modules/ExtensionSettingsStore.jsm'
-)
+);
 
-const welcomeSeenPref = 'zen.welcomeScreen.seen'
+Services.scriptloader.loadSubScript("chrome://browser/content/ZenUIManager.mjs");
+
+const kWelcomeURL = 'https://get-zen.vercel.app/welcome';
+const kWelcomeSeenPref = 'zen.welcomeScreen.seen'
 
 // =============================================================================
 // Util stuff copied from browser/components/preferences/search.js
@@ -305,6 +308,7 @@ class Pages {
    * @param {Page[]} pages The pages
    */
   constructor(pages) {
+    console.log("Initializing welcome pages...");
     this.pages = pages
     this.currentPage = 0;
 
@@ -324,6 +328,7 @@ class Pages {
       dots.appendChild(dot);
     }
     this._displayCurrentPage();
+    console.log("Welcome pages initialized.")
   }
 
   next() {
@@ -333,15 +338,20 @@ class Pages {
       // We can use internal js apis to close the window. We also want to set
       // the settings api for welcome seen to false to stop it showing again
 
-      Services.prefs.setBoolPref(welcomeSeenPref, true)
+      Services.prefs.setBoolPref(kWelcomeSeenPref, true)
 
-      close()
+      close();
+      this._openWelcomePage();
       return
     }
 
     this._displayCurrentPage()
   }
 
+  _openWelcomePage() {
+    gZenUIManager.openAndChangeToTab(kWelcomeURL);
+  }
+
   _displayCurrentPage() {
     let dots = document.getElementsByClassName("dot");
     for (let i = 0; i < dots.length; i++) {

src/browser/themes/shared/zen-browser-shared.css

@@ -503,7 +503,7 @@ panelmultiview {
   }
   
   #navigator-toolbox:hover #titlebar,
-  #navigator-toolbox:has([open="true"]) #titlebar {
+  #navigator-toolbox:has([open="true"]:not(tab)) #titlebar {
     background: var(--zen-themed-toolbar-bg) !important;
     border-right: var(--zen-appcontent-border) !important;
     padding: 0 5px;