fix: 🐛 allow copyable to work within a modal

ui/desktop/app/components/copyable/index.js

@@ -1,9 +1,10 @@
 import Component from '@glimmer/component';
-import ClipboardJS from 'clipboard';
 import { action } from '@ember/object';
+import { getOwner } from '@ember/application';
 import { generateComponentID } from 'rose/utilities/component-auto-id';
 import { task, timeout } from 'ember-concurrency';
 import { tracked } from '@glimmer/tracking';
+import ClipboardJS from 'clipboard';
 
 export default class CopyableComponent extends Component {
 
@@ -46,6 +47,18 @@ export default class CopyableComponent extends Component {
     return ClipboardJS.isSupported();
   }
 
+  // =methods
+
+  /**
+   * Returns the first element with the specified class name if exists,
+   * otherwise undefined.
+   * @return {?HTMLElement}
+   */
+  getFirstElementByClassName(className) {
+    const document = getOwner(this).lookup('service:-document').documentElement;
+    return document.getElementsByClassName(className)[0];
+  }
+
   // =actions
 
   /**
@@ -57,6 +70,13 @@ export default class CopyableComponent extends Component {
     /* istanbul ignore next */
     this.clipboard = new ClipboardJS(`#${this.copyableButtonId}`, {
       text: () => this.args.text,
+      // ClipboardJS depends on inserting a hidden textarea that receives
+      // focus in order to copy text to the clipboard.  However, our modal
+      // has a focus trap that prevents this focus.  Thus we try to set the
+      // container to a modal (if exists), since this is the only container
+      // a user would be able to interact with.  If a modal doesn't exist,
+      // container is set to `undefined` and thus uses the default body element.
+      container: this.getFirstElementByClassName('rose-dialog')
     });
     /* istanbul ignore next */
     this.clipboard.on('success', (clipboardEvent) => {

ui/desktop/app/templates/application.hbs

@@ -57,11 +57,19 @@
       @dismiss={{accept}}
     as |dialog|>
       <dialog.body>
-        {{t 'states.connection.success.description'
-          port=confirmation.text.port
-          address=confirmation.text.address
-          protocol=confirmation.text.protocol
-        }}
+
+        <Copyable
+          @text={{concat confirmation.text.address ":" confirmation.text.port}}
+          @buttonText={{t "actions.copy-to-clipboard"}}
+          @acknowledgeText={{t "states.copied"}}
+        >
+          {{t 'states.connection.success.description'
+            port=confirmation.text.port
+            address=confirmation.text.address
+            protocol=confirmation.text.protocol
+          }}
+        </Copyable>
+
       </dialog.body>
       <dialog.footer>
         <Rose::Button @style="primary" {{on "click" accept}}>