94 lines
2.2 KiB
TypeScript
94 lines
2.2 KiB
TypeScript
import { Directive, EventEmitter, ElementRef, HostListener, Input, Output } from '@angular/core';
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import { FileUploader } from './file-uploader.class';
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@Directive({selector: '[ng2FileDrop]'})
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export class FileDropDirective {
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@Input() public uploader:FileUploader;
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@Output() public fileOver:EventEmitter<any> = new EventEmitter();
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@Output() public onFileDrop:EventEmitter<File[]> = new EventEmitter<File[]>();
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private element:ElementRef;
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public constructor(element:ElementRef) {
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this.element = element;
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}
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public getOptions():any {
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return this.uploader.options;
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}
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public getFilters():any {
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return {};
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}
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@HostListener('drop', ['$event'])
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public onDrop(event:any):void {
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let transfer = this._getTransfer(event);
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if (!transfer) {
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return;
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}
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let options = this.getOptions();
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let filters = this.getFilters();
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this._preventAndStop(event);
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this.uploader.addToQueue(transfer.files, options, filters);
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this.fileOver.emit(false);
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this.onFileDrop.emit(transfer.files);
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}
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@HostListener('dragover', ['$event'])
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public onDragOver(event:any):void {
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let transfer = this._getTransfer(event);
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if (!this._haveFiles(transfer.types)) {
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return;
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}
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transfer.dropEffect = 'copy';
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this._preventAndStop(event);
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this.fileOver.emit(true);
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}
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@HostListener('dragleave', ['$event'])
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public onDragLeave(event:any):any {
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if (event.currentTarget === (this as any).element[0]) {
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return;
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}
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this._preventAndStop(event);
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this.fileOver.emit(false);
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}
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private _getTransfer(event:any):any {
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return event.dataTransfer ? event.dataTransfer : event.originalEvent.dataTransfer; // jQuery fix;
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}
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private _preventAndStop(event:any):any {
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event.preventDefault();
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event.stopPropagation();
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}
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private _haveFiles(types:any):any {
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if (!types) {
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return false;
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}
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if (types.indexOf) {
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return types.indexOf('Files') !== -1;
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} else if (types.contains) {
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return types.contains('Files');
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} else {
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return false;
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}
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}
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/*
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_addOverClass(item:any):any {
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item.addOverClass();
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}
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_removeOverClass(item:any):any {
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item.removeOverClass();
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}*/
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}
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