UX: Improve copying from IP lookup component.

- Removed trailing whitespaces caused by textarea.
- Clicking the Copy button will show "copied" for 2 seconds.

app/assets/javascripts/admin/components/ip-lookup.js.es6

@@ -88,10 +88,13 @@ export default Ember.Component.extend({
           text += `: ${location.phone}\n`;
         }
       }
-      const copyRange = $(`<textarea id="copy-range"></textarea>`);
+      const copyRange = $('<p id="copy-range"></p>');
-      copyRange.text(text);
+      copyRange.html(text.trim().replace("\n", "<br>"));
       $(document.body).append(copyRange);
-      copyText(text, copyRange[0]);
+      if (copyText(text, copyRange[0])) {
+        this.set("copied", true);
+        Ember.run.later(() => this.set("copied", false), 2000);
+      }
       copyRange.remove();
     },
 

app/assets/javascripts/discourse/templates/components/ip-lookup.hbs

@@ -6,7 +6,11 @@
 {{#if show}}
   <div class="location-box">
     <a class="close pull-right" {{action "hide"}}>{{d-icon "times"}}</a>
+    {{#if copied}}
+      <a class="btn btn-hover pull-right">{{d-icon "copy"}} {{i18n "ip_lookup.copied"}}</a>
+    {{else}}
       <a class="btn pull-right" {{action "copy"}}>{{d-icon "copy"}}</a>
+    {{/if}}
     <h4>{{i18n 'ip_lookup.title'}}</h4>
     <p class='powered-by'>{{{i18n 'ip_lookup.powered_by'}}}</p>
     <dl>

config/locales/client.en.yml

@@ -597,6 +597,7 @@ en:
       post_count: "# posts"
       confirm_delete_other_accounts: "Are you sure you want to delete these accounts?"
       powered_by: "powered by <a href='https://ipinfo.io'>ipinfo.io</a>"
+      copied: "copied"
 
     user_fields:
       none: "(select an option)"