DevTools: Let the drawer tabs be reordered

third_party/WebKit/LayoutTests/http/tests/inspector-unit/view-location.js

+class ClosableView extends UI.SimpleView {
+  isCloseable() {
+    return true;
+  }
+}
+
+runtime._registerModule({
+  name: "mock-module",
+  extensions: ['first', 'second', 'third', 'fourth'].map(title => {
+    return {
+      "type": "view",
+      "location": "mock-location",
+      "id": title,
+      "title": title,
+      "persistence": "closeable",

[dgozman, 2017/05/26 19:17:08]

Do you need both this and isCloseable method? In fact, there is no need for
SimpleView now, right?

[einbinder, 2017/05/26 21:12:38]

I did but now I don't.

+      "factoryName": "ClosableView"
+    }
+  }),
+  scripts: []
+});
+
+var tabbedLocation;
+createTabbedLocation();
+dumpTabs();
+TestRunner.addResult('Appending three views')
+tabbedLocation.appendView(new ClosableView('first'));

[dgozman, 2017/05/26 19:17:08]

Why manually? Doesn't this clash with ones from extension? Should we do
viewManager.showView('first')?

[einbinder, 2017/05/26 21:12:38]

It doesn't clash, but your code is much cleaner.

+tabbedLocation.appendView(new ClosableView('second'));
+tabbedLocation.appendView(new ClosableView('third'));
+dumpTabs();
+createTabbedLocation();
+dumpTabs();
+TestRunner.addResult('Re-order tabs');
+tabbedLocation.tabbedPane()._insertBefore(tabbedLocation.tabbedPane()._tabsById.get("third"), 0);
+dumpTabs();
+createTabbedLocation();
+dumpTabs();
+tabbedLocation.appendView(new ClosableView('fourth'));
+dumpTabs();
+createTabbedLocation();
+dumpTabs();
+TestRunner.addResult('Closing second tab');
+tabbedLocation.tabbedPane().closeTab('second');
+dumpTabs();
+createTabbedLocation();
+dumpTabs();
+TestRunner.completeTest();
+
+function createTabbedLocation() {
+  TestRunner.addResult('Creating new TabbedLocation');
+  if (tabbedLocation)
+    tabbedLocation.tabbedPane().detach(true);
+  tabbedLocation = (new UI.ViewManager()).createTabbedLocation(undefined, 'mock-location', true, true);

[dgozman, 2017/05/26 19:17:08]

Why not UI.viewManager?

[einbinder, 2017/05/26 21:12:39]

UI.viewManager has stale extensions. Also it should be recreated every time to
simulate closing and opening devtools.

+  tabbedLocation.widget().show(UI.inspectorView.element);
+}
+
+function dumpTabs() {
+  TestRunner.addResult(JSON.stringify(tabbedLocation.tabbedPane().tabIds()));
+}