feat: Unload a workspace context menu, p=#10688

Co-authored-by: mr. m <91018726+mr-cheffy@users.noreply.github.com>

locales/en-US/browser/browser/zen-workspaces.ftl

@@ -23,6 +23,9 @@ zen-workspaces-panel-change-icon =
 zen-workspaces-panel-context-default-profile =
     .label = Set Profile
 
+zen-workspaces-panel-unload =
+    .label = Unload Space
+
 zen-workspaces-how-to-reorder-title = How to reorder spaces
 zen-workspaces-how-to-reorder-desc = Drag the space icons at the bottom of the sidebar to reorder them
 

src/browser/base/content/zen-commands.inc.xhtml

@@ -39,6 +39,7 @@
   <command id="cmd_contextZenRemoveFromEssentials" />
 
   <command id="cmd_zenCtxDeleteWorkspace" />
+  <command id="cmd_zenUnloadWorkspace" />
   <command id="cmd_zenChangeWorkspaceName" />
   <command id="cmd_zenChangeWorkspaceIcon" />
   <command id="cmd_zenReorderWorkspaces" />

src/browser/base/content/zen-panels/popups.inc

@@ -25,6 +25,7 @@
     hide-if-usercontext-disabled="true">
     <menupopup />
   </menu>
+  <menuitem id="context_zenUnloadWorkspace" data-l10n-id="zen-workspaces-panel-unload" command="cmd_zenUnloadWorkspace"/>
   <menuseparator id="context_zenWorkspacesSeparator"/>
   <menuseparator/>
   <menuitem id="context_zenReorderWorkspaces" data-l10n-id="zen-workspaces-panel-context-reorder" command="cmd_zenReorderWorkspaces"/>

src/zen/common/zen-sets.js

@@ -122,6 +122,10 @@ document.addEventListener(
             }
             break;
           }
+          case 'cmd_zenUnloadWorkspace': {
+            gZenWorkspaces.unloadWorkspace();
+            break;
+          }
           default:
             gZenGlanceManager.handleMainCommandSet(event);
             if (event.target.id.startsWith('cmd_zenWorkspaceSwitch')) {

src/zen/workspaces/ZenWorkspaces.mjs

@@ -1479,6 +1479,26 @@ var gZenWorkspaces = new (class extends nsZenMultiWindowFeature {
     });
   }
 
+  async unloadWorkspace() {
+    const workspaceId = this.#contextMenuData?.workspaceId || this.activeWorkspace;
+
+    const tabsToUnload = this.allStoredTabs.filter(
+      (tab) =>
+        tab.getAttribute('zen-workspace-id') === workspaceId &&
+        !tab.hasAttribute('zen-empty-tab') &&
+        !tab.hasAttribute('zen-essential') &&
+        !tab.hasAttribute('pending')
+    );
+
+    if (tabsToUnload.length === 0) {
+      return;
+    }
+
+    this.log('Unloading workspace', workspaceId);
+
+    await gBrowser.explicitUnloadTabs(tabsToUnload);  // TODO: unit test this
+  }
+
   moveTabToWorkspace(tab, workspaceID) {
     return this.moveTabsToWorkspace([tab], workspaceID);
   }