chrome.omnibox.onInputEntered.addListener(function(t) {
  var url = urlForInput(t);
  if (url) {
    chrome.tabs.query({ "active": true, "currentWindow": true }, function(tab) {
      if (!tab) return;
      chrome.tabs.update(tab.id, { "url": url, "selected": true });
    });
  }

{* ../../docs_src/websockets/tutorial003_py39.py hl[79:81] *}

Zum Ausprobieren:

* Öffnen Sie die Anwendung mit mehreren Browser-Tabs.
* Schreiben Sie Nachrichten in den Tabs.
* Schließen Sie dann einen der Tabs.

Das wird die Ausnahme `WebSocketDisconnect` auslösen und alle anderen Clients erhalten eine Nachricht wie:

```
Client #1596980209979 left the chat
```

  },
  "browser_action": {
    "default_icon": "gopher.png",
    "default_popup": "popup.html"
  },
  "omnibox": { "keyword": "golang" },
  "icons": {
    "16": "gopher.png"
  },
  "permissions": [
     "tabs"
  ]

.nav-tabs.flex-column .nav-link:hover {\n  background-color: #3f474e;\n}\n\n.dark-mode .nav-tabs.flex-column.nav-tabs-right {\n  border-color: #56606a;\n}\n\n.dark-mode .nav-tabs.flex-column.nav-tabs-right .nav-link.active, .dark-mode .nav-tabs.flex-column.nav-tabs-right .nav-link:focus, .dark-mode .nav-tabs.flex-column.nav-tabs-right .nav-link:hover {\n  border-color: #56606a #56606a #56606a transparent;\n}\n\n.dark-mode .navbar-light {\n  background-color: #f8f9fa;\n}\n\n.dark-mode .navbar-dark...

  features:
  - content.code.annotate
  - content.code.copy
  - content.footnote.tooltips
  - content.tabs.link
  - content.tooltips
  - navigation.footer
  - navigation.indexes
  - navigation.instant
  - navigation.instant.prefetch
  - navigation.instant.progress
  - navigation.path
  - navigation.tabs
  - navigation.tabs.sticky
  - navigation.top
  - navigation.tracking
  - search.highlight
  - search.share

function openURL(url) {
  chrome.tabs.create({ "url": url })
}

function addLinks() {
  var links = document.getElementsByTagName("a");
  for (var i = 0; i < links.length; i++) {
    var url = links[i].getAttribute("url");
    if (url)
      links[i].addEventListener("click", function () {
        openURL(this.getAttribute("url"));
      });
  }
}

window.addEventListener("load", function () {
  addLinks();

        crawlerStatsHelper.begin(key);
        crawlerStatsHelper.record(key, "action\twith\ttabs");
        crawlerStatsHelper.done(key);

        String logMessage = localLogMsg.get();
        assertTrue(logMessage.contains("action with tabs:"));
        assertFalse(logMessage.contains("action\twith\ttabs:"));
    }

    public void test_unsupportedKeyType() {
        Object key = new Object();

#dee2e6}.nav-tabs.flex-column.nav-tabs-right{border-left:1px solid #dee2e6;border-right:0}.nav-tabs.flex-column.nav-tabs-right .nav-link{border-bottom-left-radius:0;border-bottom-right-radius:.25rem;border-top-left-radius:0;border-top-right-radius:.25rem;margin-left:-1px}.nav-tabs.flex-column.nav-tabs-right .nav-link:focus,.nav-tabs.flex-column.nav-tabs-right .nav-link:hover{border-color:#e9ecef #e9ecef #e9ecef transparent}.nav-tabs.flex-column.nav-tabs-right .nav-item.show .nav-link,.nav-tabs.flex-column.nav-tabs-right...

{* ../../docs_src/websockets/tutorial003_py39.py hl[79:81] *}

To try it out:

* Open the app with several browser tabs.
* Write messages from them.
* Then close one of the tabs.

That will raise the `WebSocketDisconnect` exception, and all the other clients will receive a message like:

```
Client #1596980209979 left the chat
```

/// tip

        assertTrue(result.contains("content"));
        assertTrue(result.contains("newlines"));
        assertTrue(result.contains("tabs"));
        // JSON should be properly escaped
        assertTrue(result.contains("Test"));
    }

    public void test_toSlackMessage_withWhitespaceContent() {
        MockSMailPostingDiscloser discloser = new MockSMailPostingDiscloser();