Initial implementation

This commit is contained in:
trading_peter 2024-10-21 23:29:10 +02:00
parent 24dd530db8
commit a6b62fcd46
6 changed files with 247 additions and 40 deletions

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# tp-element # tp-dropzone

60
dropzone-mixin.js Normal file
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export const dropzoneMixin = function(superClass) {
return class extends superClass {
constructor() {
super();
this._boundOnDragStart = this._onDragStart.bind(this);
this._boundOnDrag = this._onDrag.bind(this);
this._boundOnDrag = this._onDrag.bind(this);
this._boundOnLeave = this._onLeave.bind(this);
this._boundOnDrop = this._onDrop.bind(this);
}
connectedCallback() {
super.connectedCallback();
this.addEventListener('dragstart', this._boundOnDragStart, false)
this.addEventListener('dragenter', this._boundOnDrag, false)
this.addEventListener('dragover', this._boundOnDrag, false)
this.addEventListener('dragleave', this._boundOnLeave, false)
this.addEventListener('drop', this._boundOnDrop, false)
}
disconnectedCallback() {
super.disconnectedCallback();
this.removeEventListener('dragstart', this._boundOnDragStart, false)
this.removeEventListener('dragenter', this._boundOnDrag, false)
this.removeEventListener('dragover', this._boundOnDrag, false)
this.removeEventListener('dragleave', this._boundOnLeave, false)
this.removeEventListener('drop', this._boundOnDrop, false)
}
// This event is only triggered if the dragging motion was started inside the browser window.
// If that's the case, we know that it can't be image dragged from external. In that case this event isn't triggered because the browser doesn't have focus.
_onDragStart() {
this._interDragStart = true;
}
_onDrag(e) {
if (this._interDragStart) return;
this._stopPropagation(e);
this.isDraggedOn = true;
}
_onLeave(e) {
this._stopPropagation(e);
this.isDraggedOn = false;
this._interDragStart = false;
}
_onDrop(e) {
this._stopPropagation(e);
this._interDragStart = false;
this.isDraggedOn = false;
this.dispatchEvent(new CustomEvent('dropped', { detail: e.dataTransfer, bubbles: true, composed: true }));
}
_stopPropagation(e) {
e.preventDefault();
e.stopPropagation();
}
};
};

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package-lock.json generated Normal file
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{ {
"name": "@tp/tp-element", "name": "@tp/tp-dropzone",
"version": "0.0.1", "version": "1.0.0",
"description": "", "description": "",
"main": "tp-element.js", "main": "tp-dropzone.js",
"scripts": { "scripts": {
"test": "echo \"Error: no test specified\" && exit 1" "test": "echo \"Error: no test specified\" && exit 1"
}, },
"repository": { "repository": {
"type": "git", "type": "git",
"url": "https://gitea.codeblob.work/tp-elements/tp-element.git" "url": "https://gitea.codeblob.work/tp-dropzones/tp-dropzone.git"
}, },
"author": "trading_peter", "author": "trading_peter",
"license": "Apache-2.0", "license": "Apache-2.0",
"dependencies": { "dependencies": {
"@tp/helpers": "^1.3.0",
"lit": "^2.2.0" "lit": "^2.2.0"
} }
} }

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tp-dropzone.js Normal file
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/**
@license
Copyright (c) 2022 trading_peter
This program is available under Apache License Version 2.0
*/
import { dropzoneMixin } from './dropzone-mixin';
import { upload } from '@tp/helpers/upload-files.js';
import { LitElement, html, css } from 'lit';
class TpDropzone extends upload(dropzoneMixin(LitElement)) {
static get styles() {
return [
css`
:host {
display: flex;
justify-content: center;
align-items: center;
border: dashed 2px #000000;
padding: 20px;
text-align: center;
}
:host([isdraggedon]) {
color: #ffffff;
border: dashed 2px #000000;
}
`
];
}
render() {
return html`
<slot></slot>
`;
}
static get properties() {
return {
url: { type: String },
isDraggedOn: { type: Boolean, reflect: true },
};
}
async upload(dt) {
let files = dt.files;
if (files.length > 0) {
const params = { url: this.url, data: null };
document.dispatchEvent(new CustomEvent('before-upload', { detail: params, bubbles: true, composed: true }));
this.uploadFiles(params.url, files, params.data);
}
}
_upload(dt) {
return this.upload(dt);
}
}
window.customElements.define('tp-dropzone', TpDropzone);

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@ -1,35 +0,0 @@
/**
@license
Copyright (c) 2022 trading_peter
This program is available under Apache License Version 2.0
*/
import { LitElement, html, css } from 'lit';
class TpElement extends LitElement {
static get styles() {
return [
css`
:host {
display: block;
}
`
];
}
render() {
const { } = this;
return html`
`;
}
static get properties() {
return { };
}
}
window.customElements.define('tp-element', TpElement);