alfresco-ng2-components/docs/content-services/components/upload-drag-area.component.md

Title, Added, Status, Last reviewed

Title	Added	Status	Last reviewed
Upload Drag Area Component	v2.0.0	Active	2019-01-16

Upload Drag Area Component

Adds a drag and drop area to upload files to ACS.

Contents

• Basic Usage
  • Transclusions
• Class members
  • Properties
  • Events
• Details
  • Intercepting uploads
  • Example
• See also

Basic Usage

<adf-upload-drag-area (success)="onSuccess($event)">
    <div style="width: 200px; height: 100px; border: 1px solid #888888">
        DRAG HERE
    </div>
</adf-upload-drag-area>
<adf-file-uploading-dialog></adf-file-uploading-dialog>

export class AppComponent {

    public onSuccess(event: Object): void {
        console.log('File uploaded');
    }

}

Transclusions

You can supply any content in the <adf-upload-drag-area> to display as the drag/drop target:

<adf-upload-drag-area (success)="onSuccess($event)">
    <div style="width: 200px; height: 100px; border: 1px solid #888888">
        DRAG HERE
    </div>
</adf-upload-drag-area>

Class members

Properties

Name	Type	Default value	Description
acceptedFilesType	string	"*"	Filter for accepted file types.
comment	string		When you overwrite existing content, you can use the comment field to add a version comment that appears in the version history
disabled	boolean	false	Toggles component disabled state (if there is no node permission checking).
majorVersion	boolean	false	majorVersion boolean field to true to indicate a major version should be created.
maxFilesSize	number		Sets a limit on the maximum size (in bytes) of a file to be uploaded. Has no effect if undefined.
nodeType	string	"cm:content"	Custom node type for uploaded file
rootFolderId	string	"-root-"	The ID of the root. Use the nodeId for Content Services or the taskId/processId for Process Services.
versioning	boolean	false	Toggles versioning.

Events

Name	Type	Description
beginUpload	EventEmitter<UploadFilesEvent>	Emitted when the upload begins.
error	EventEmitter<>	Emitted when an error occurs.
success	EventEmitter<>	Emitted when the file is uploaded successfully.
updateFileVersion	EventEmitter<CustomEvent<any>>	Emitted when dropping a file over another file to update the version.

Details

Intercepting uploads

You can intercept the upload process using the beginUpload event.

The event has a type of UploadFilesEvent and provides the following APIs:

• files: accesses the FileInfo objects that are prepared for the upload
• pauseUpload: pauses the upload and performs additional tasks, like showing the confirmation dialog
• resumeUpload: resumes the upload process

Example

Wire the beginUpload event at the template level:

<adf-upload-drag-area (beginUpload)="onBeginUpload($event)" ...>
    ...
</adf-upload-drag-area>

Create the onBeginUpload handler that invokes a confirmation dialog:

import { UploadFilesEvent, ConfirmDialogComponent } from '@alfresco/adf-content-services';

@Component({...})
export class MyComponent {

    onBeginUpload(event: UploadFilesEvent) {
        const files = event.files || [];

        if (files.length > 1) {
            event.pauseUpload();

            const dialogRef = this.dialog.open(ConfirmDialogComponent, {
                data: {
                    title: 'Upload',
                    message: `Are you sure you want to upload ${files.length} file(s)?`
                },
                minWidth: '250px'
            });

            dialogRef.afterClosed().subscribe(result => {
                if (result === true) {
                    event.resumeUpload();
                }
            });
        }
    }

}

The example above shows a confirmation dialog every time a user uploads more than 1 file. This could be either a selection of 2 or more files, or a folder with multiple entries.

See also

• File uploading dialog component
• Upload button component
• File upload error pipe