# NGX Explorer DnD
## _Drag & Drop in Angular like in a desktop explorer!_
- Select with mouse (selection rect)
- Drag & Drop single or multiple files and folders
- Sorting components in a grid **new**
- Feel the ✨magic✨
- Test it on [Stackblitz][sb]!
## Getting Started
### Installation
Install the ngx-explorer-dnd package from **npm**
```
npm install ngx-explorer-dnd --save
```
or use **ng add**
```
ng add ngx-explorer-dnd
```
### Usage
##### HTML Part
Add the `ngxExplorerDndContainer` directive to your container component. If you wanna use the selection rect, too add it with `ngxDragSelection`. Add `ngxExplorerDndElement` to the components to drag, so the file and folders as example.
```
```
###### Sorting Function
If you wanna enable sorting so add the `enableSorting` property to the `ngxExplorerDndElement` and set it to `true`.
##### Code Behind
Simple we set a `isDragInProgress` boolean. So we don't wanna see the selection rect if we drag some elements. And if we use the selection rect and any elements are under the rect we wanna select it.
```
export class AppComponent {
directories = ['Folder 1', 'Folder 2', 'Folder 3', 'Folder 4'];
files = ['File 1', 'File 2', 'File 3', 'File 4'];
isDragInProgress: boolean = false;
@ViewChildren(FileFolder)
fileFolderComponents!: QueryList;
constructor() { }
dragInProgress(event: boolean) {
this.isDragInProgress = event;
}
selectedElementsChange(event: { count: number; data: FileFolder[] }) {
for (let _data of this.fileFolderComponents) {
_data.selected = false;
}
for (let _data of event.data) {
_data.selected = true;
}
}
drop(event: any) {
console.log(event);
}
}
```
##### The File and Folder Components
If we add the optional FileFolder extension to our components we have access to properties like **selected**, **type**, **position?**, **id?**.
```
@Component({
selector: 'app-file',
templateUrl: './file.component.html',
styleUrls: ['./file.component.scss'],
providers: [
{ provide: FileFolder, useExisting: forwardRef(() => FileComponent) },
],
})
export class FileComponent extends FileFolder {}
```
##### Optional Target Component
You can set the `ngxExplorerDndTarget` directive to a folder as example. So if you drag elements into this folder component the `drop event` will have a target property which includes the optional data you give them.
## API
##### ngxExplorerDndContainer
The highest container of all draggable components.
##### ngxExplorerDndContainer
The highest container of all draggable components.
##### ngxExplorerDndElement
A draggable component. Can be a **file** and a **folder**
##### ngxExplorerDndTarget
A target for the `ngxExplorerDndElement` components. It self can be a `ngxExplorerDndElement`, too.
##### ngxDragSelection
Best set this directive to the highest container; so the `ngxExplorerDndContainer`. Inside this container the selection rect will be show.
### Properties and Events
Here are the properties and Events of the directives we have:
##### Properties
#
| Directive | Property | Type | Description |
| ----------------------- | :-----------------: | :-------------------: | :-------------------------------------------------: |
| ngxExplorerDndContainer | dragData | any | Add any optional data for the `drop` event. |
| ngxExplorerDndContainer | badge | string _or_ undefined | If set it shows a custom badge inside drag preview. |
| ngxExplorerDndContainer | cancelAnimation | boolean | If set to true it cancel the `move back` animation. |
| ngxExplorerDndContainer | enableSorting | boolean | If set to true sorting is enabled. |
| ngxDragSelection | selectionAllowed | boolean | Set if the selection rect can be showed. |
| ngxDragSelection | selectionDivElement | HTMLElement _or_ null | Set a custom selection rect with custom styles. |
| ngxExplorerDndElement | dndElementData | any | Any optional data for the `drop` event. |
| ngxExplorerDndTarget | dndTargetData | any | Any optional data for the `drop` event. |
##### Events
#
| Directive | Event | Type | Description |
| ----------------------- | :--------------------: | :-----------------------------------------------------------------------------: | :-----------------------------------------------------------------: | ------- | -------------------------------------------------- |
| ngxExplorerDndContainer | dragInProgress | EventEmitter | Emitted when drag progress was started. |
| ngxExplorerDndContainer | drop | EventEmitter<{ item: any, target: any, oprionalDragData?: any, oldIndex: number | null, newIndex: number | null }> | Occurs on `ngxExplorerDndElement` will be dropped. |
| ngxExplorerDndContainer | targetChange | EventEmitter<{ target: any }> | Occurs on any `ngxExplorerDndTarget` is under mouse while dragging. |
| ngxDragSelection | selectedElementsChange | EventEmitter<{ count: number, data: `FileFolder[]` }> | Occurs when selected Elements are changed. |
## Example
A example says more than 1000 words. So play around with [Stackblitz][sb]!
## Version History
- Alpha 10: _Added sorting functionality_
- Alpha 1 to 9: _First release and bug fixes_
## Authors
- Florian Heuberger _(Flo0806)_
## License
[MIT License][mit] © Andrea SonnY
## Last But Not Least
If you like the project so give it a star! 😎
[sb]: https://stackblitz.com/edit/angular-ivy-wsegkg?file=src/app/app.component.ts/
[mit]: https://andreasonny.mit-license.org/2019