Fix "copy link to clipboard" for large file Sends (#949)

* Throw error if execCommand('copy') is disabled

* Use dialog for file Send creation success

* Show popup modal after long Send file uploads

* fix linting

* bump jslib

src/app/send/add-edit.component.ts

@@ -12,6 +12,8 @@ import { UserService } from 'jslib/abstractions/user.service';
 
 import { AddEditComponent as BaseAddEditComponent } from 'jslib/angular/components/send/add-edit.component';
 
+import { SendType } from 'jslib/enums/sendType';
+
 @Component({
     selector: 'app-send-add-edit',
     templateUrl: 'add-edit.component.html',
@@ -25,6 +27,15 @@ export class AddEditComponent extends BaseAddEditComponent {
             messagingService, policyService);
     }
 
+    async showSuccessMessage(inactive: boolean) {
+        if (inactive && this.copyLink && this.send.type === SendType.File) {
+            await this.platformUtilsService.showDialog(this.i18nService.t('createdSend'), null,
+                this.i18nService.t('ok'), null, 'success', null);
+        } else {
+            await super.showSuccessMessage(inactive);
+        }
+    }
+
     copyLinkToClipboard(link: string) {
         // Copy function on web depends on the modal being open or not. Since this event occurs during a transition
         // of the modal closing we need to add a small delay to make sure state of the DOM is consistent.

src/services/webPlatformUtils.service.ts

@@ -245,7 +245,10 @@ export class WebPlatformUtilsService implements PlatformUtilsService {
             textarea.select();
             try {
                 // Security exception may be thrown by some browsers.
-                doc.execCommand('copy');
+                const copyEnabled = doc.execCommand('copy');
+                if (!copyEnabled) {
+                    throw new Error('Command unsupported or disabled');
+                }
             } catch (e) {
                 // tslint:disable-next-line
                 console.warn('Copy to clipboard failed.', e);