Adopt StubItems added to the workspace after PaneItem mount

Author: smashwilson

lib/atom/pane-item.js

@@ -71,6 +71,30 @@ export default class PaneItem extends React.Component {
   }
 
   componentDidMount() {
+    // Listen for and adopt StubItems that are added after this component has
+    // already been mounted.
+    this.subs.add(this.props.workspace.onDidAddPaneItem(({item}) => {
+      if (item.getRealItem && item.getRealItem() === null) {
+        const match = this.state.uriPattern.matches(item.getURI());
+        if (!match.ok()) {
+          return;
+        }
+
+        const openItem = new OpenItem(match, item.getElement(), item);
+        openItem.hydrateStub({
+          copy: () => this.copyOpenItem(openItem),
+        });
+        if (this.props.className) {
+          openItem.addClassName(this.props.className);
+        }
+        this.registerCloseListener(item, openItem);
+
+        this.setState(prevState => ({
+          currentlyOpen: [...prevState.currentlyOpen, openItem],
+        }));
+      }
+    }));
+
     for (const openItem of this.state.currentlyOpen) {
       this.registerCloseListener(openItem.stubItem, openItem);
 

test/atom/pane-item.test.js

@@ -319,11 +319,9 @@ describe('PaneItem', function() {
 
       const stub = StubItem.create('some-component', {title: 'Component'}, 'atom-github://pattern/root/45');
       workspace.getActivePane().addItem(stub);
-
       wrapper.update();
 
       assert.isTrue(wrapper.exists('Component[text="45"]'));
-      assert.strictEqual(stub.getText(), '45');
     });
   });
 });