New implementation without a third-party lib.
This commit is contained in:
parent
1ad5f6bb35
commit
a3a8065c6a
117
package-lock.json
generated
117
package-lock.json
generated
@ -1,56 +1,67 @@
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{
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"name": "@tp/tp-sortable",
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"version": "2.0.0",
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@ -63,39 +74,53 @@
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@ -1,6 +1,6 @@
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{
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"name": "@tp/tp-sortable",
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"version": "1.0.1",
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"version": "2.0.0",
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"description": "",
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"main": "tp-sortable.js",
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"scripts": {
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@ -13,6 +13,7 @@
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"author": "trading_peter",
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"license": "Apache-2.0",
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"dependencies": {
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"@tp/helpers": "^2.2.0",
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"lit": "^2.8.0",
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"sortablejs": "^1.15.0"
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}
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221
tp-sortable.js
221
tp-sortable.js
@ -1,18 +1,23 @@
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/**
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@license
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Copyright (c) 2022 trading_peter
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Copyright (c) 2024 trading_peter
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This program is available under Apache License Version 2.0
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*/
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import { LitElement, html, css } from 'lit';
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import Sortable from 'sortablejs/modular/sortable.core.esm.js';
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import { EventHelpers } from '@tp/helpers/event-helpers.js';
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import { closest } from '@tp/helpers/closest.js';
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class TpSortable extends LitElement {
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class TpSortable extends EventHelpers(LitElement) {
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static get styles() {
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return [
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css`
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:host {
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display: block;
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-webkit-user-select: none;
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-moz-user-select: none;
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-ms-user-select: none;
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user-select: none;
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}
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`
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@ -21,7 +26,7 @@ class TpSortable extends LitElement {
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render() {
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return html`
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<slot name="list"></slot>
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<slot></slot>
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`;
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}
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@ -36,6 +41,8 @@ class TpSortable extends LitElement {
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sorting: { type: Boolean, reflect: true },
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tracking: { type: Boolean },
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_sortables: { type: Array }
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};
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}
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@ -46,19 +53,211 @@ class TpSortable extends LitElement {
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this.handle = null;
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this.longPress = false;
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this.sorting = false;
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this.tracking = false;
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this._sortables = [];
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}
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firstUpdated() {
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this.sortable = Sortable.create(this.querySelector('[slot="list"]'), {
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animation: 150,
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draggable: this.selector,
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handle: this.handle,
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onSort: e => {
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this.dispatchEvent(new CustomEvent('sorting-changed', { detail: e, bubbles: true, composed: true }));
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}
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this.listen(this, 'track', '_onTrack');
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this.listen(this, 'mousedown', '_onMouseDown');
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}
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_onTrack(e) {
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switch (e.detail.state) {
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case 'track':
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if (!this.sorting && this._longPressJob !== false && (Math.abs(e.detail.dy) > 10 || Math.abs(e.detail.dx) > 10)) {
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this._cancelLongPress();
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return;
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}
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if (this.sorting) {
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this._dy = e.detail.dy;
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this._direction = this._dy < 0 ? 1 : -1;
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this._translate3d('0px', this._dy + 'px', '0px', this._target);
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this._moveSiblings();
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}
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break;
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case 'end':
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if (this.sorting) {
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const result = this._calcOverlap();
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this._target.style.zIndex = '';
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this._target.removeAttribute('is-dragged');
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this._dy = 0;
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this._translate3d('0px', '0px', '0px', this._target);
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this._resetSortables();
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this.sorting = false;
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this.dispatchEvent(new CustomEvent('items-rearranged', { detail: result, bubbles: true, composed: true }));
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}
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break;
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}
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}
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_onMouseDown(e) {
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this._longPressTarget = closest(e.composedPath()[0], this.handle || this.selector, true);
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if (this._longPressTarget) {
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this._startX = e.detail.x;
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this._startY = e.detail.y;
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const path = e.composedPath();
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this._longPressJob = setTimeout(() => {
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this._setTouchAction(this, 'none');
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this._setupTarget(path);
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this._longPressTarget.setAttribute('long-pressed', '');
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}, this.longPress ? 200 : 0);
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}
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}
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onMouseUp() {
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this._cancelLongPress();
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setTimeout(() => {
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this.sorting = false;
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});
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}
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_setupTarget(path) {
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this._target = closest(path[0], this.selector, true);
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if (this._target) {
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this._target.setAttribute('is-dragged', '');
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this._rect = this._target.getBoundingClientRect();
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this._registerSortableElements();
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this.sorting = true;
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this._translate3d('0px', this._dy + 'px', '0px', this._target);
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}
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}
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_cancelLongPress() {
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clearTimeout(this._longPressJob);
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this._longPressJob = false;
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if (this._longPressTarget) {
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this._longPressTarget.removeAttribute('long-pressed');
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}
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this._setTouchAction(this, 'auto');
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}
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_moveSiblings() {
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const targetTop = this._rect.top + this._dy;
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const targetHeight = this._rect.height;
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const isTrackingDown = () => this._dy > 0;
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const itemsBeforeTarget = () => {
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const idx = this._sortables.findIndex(item => item.el === this._target);
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return this._sortables.slice(0, idx);
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}
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const itemsAfterTarget = () => {
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const idx = this._sortables.findIndex(item => item.el === this._target);
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return this._sortables.slice(idx + 1);
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}
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if (isTrackingDown()) {
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const items = itemsAfterTarget();
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for (let i = 0, li = items.length; i < li; ++i) {
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const item = items[i];
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if (item.el !== this._target) {
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if (targetTop + targetHeight > item.rect.top + (item.rect.height * 0.5)) {
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this._translate3d('0px', -targetHeight + 'px', '0px', item.el);
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}
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||||
if (targetTop + targetHeight < item.rect.top + (item.rect.height * 0.5)) {
|
||||
this._translate3d('0px', '0px', '0px', item.el);
|
||||
}
|
||||
}
|
||||
}
|
||||
} else {
|
||||
const items = itemsBeforeTarget();
|
||||
|
||||
for (let i = 0, li = items.length; i < li; ++i) {
|
||||
const item = items[i];
|
||||
if (item.el !== this._target) {
|
||||
if (targetTop - (item.rect.height * 0.5) > item.rect.top) {
|
||||
this._translate3d('0px', '0px', '0px', item.el);
|
||||
}
|
||||
|
||||
if (targetTop - (item.rect.height * 0.5) < item.rect.top) {
|
||||
this._translate3d('0px', targetHeight + 'px', '0px', item.el);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Finds the next nearest sibling and returns the distance.
|
||||
* @return {Object} Distance and item of the next nearest sibling.
|
||||
*/
|
||||
_calcOverlap() {
|
||||
let oldIndex = 0;
|
||||
|
||||
const list = [];
|
||||
for (let i = 0, li = this._sortables.length; i < li; ++i) {
|
||||
if (this._sortables[i].el === this._target) {
|
||||
oldIndex = i;
|
||||
}
|
||||
|
||||
if (this._sortables[i].el !== undefined) {
|
||||
list.push({ top: parseInt(this._sortables[i].el.getBoundingClientRect().top, 10), el: this._sortables[i].el });
|
||||
}
|
||||
}
|
||||
|
||||
list.sort((a, b) => {
|
||||
return a.top - b.top;
|
||||
});
|
||||
|
||||
const newOrder = list.map(item => item.el);
|
||||
const targetIdx = newOrder.findIndex(el => el === this._target);
|
||||
|
||||
return {
|
||||
oldIndex: oldIndex,
|
||||
newIndex: targetIdx,
|
||||
newOrder: newOrder,
|
||||
siblingBefore: targetIdx > 0 ? newOrder[targetIdx - 1] : null,
|
||||
siblingAfter: targetIdx < newOrder.length - 1 ? newOrder[targetIdx + 1] : null,
|
||||
target: this._target
|
||||
};
|
||||
}
|
||||
|
||||
_registerSortableElements() {
|
||||
this._sortables = [];
|
||||
let sortables = Array.from(this.querySelectorAll(this.selector));
|
||||
|
||||
for (let i = 0, li = sortables.length; i < li; ++i) {
|
||||
const el = sortables[i];
|
||||
el.style.position = el.style.position || 'relative';
|
||||
el.style.transition = 'transform 300ms ease-in-out';
|
||||
el.style.zIndex = '0';
|
||||
this._sortables.push({
|
||||
el: el,
|
||||
rect: el.getBoundingClientRect()
|
||||
});
|
||||
}
|
||||
|
||||
this._target.style.zIndex = '9999';
|
||||
this._target.style.transition = '';
|
||||
}
|
||||
|
||||
_resetSortables() {
|
||||
for (var i = 0, li = this._sortables.length; i < li; ++i) {
|
||||
var item = this._sortables[i];
|
||||
item.el.style.transition = '';
|
||||
item.el.style.transform = '';
|
||||
item.el.style.zIndex = '';
|
||||
}
|
||||
|
||||
this._target = null;
|
||||
}
|
||||
|
||||
_translate3d(x, y, z, node) {
|
||||
node = (node || this);
|
||||
const transformText = 'translate3d(' + x + ',' + y + ',' + z + ')';
|
||||
node.style.webkitTransform = transformText;
|
||||
node.style.transform = transformText;
|
||||
}
|
||||
|
||||
_setTouchAction(node, value) {
|
||||
node.style.touchAction = value;
|
||||
}
|
||||
}
|
||||
|
||||
window.customElements.define('tp-sortable', TpSortable);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user