280 lines
9.3 KiB
JavaScript
Executable file
280 lines
9.3 KiB
JavaScript
Executable file
import { createEvent, h, Host, proxyCustomElement } from '@stencil/core/internal/client';
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import { b as getIonMode } from './ionic-global.js';
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import { a as hapticSelectionStart, b as hapticSelectionChanged, h as hapticSelectionEnd } from './haptic.js';
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const reorderGroupCss = ".reorder-list-active>*{-webkit-transition:-webkit-transform 300ms;transition:-webkit-transform 300ms;transition:transform 300ms;transition:transform 300ms, -webkit-transform 300ms;will-change:transform}.reorder-enabled{-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}.reorder-enabled ion-reorder{display:block;cursor:-webkit-grab;cursor:grab;pointer-events:all;-ms-touch-action:none;touch-action:none}.reorder-selected,.reorder-selected ion-reorder{cursor:-webkit-grabbing;cursor:grabbing}.reorder-selected{position:relative;-webkit-transition:none !important;transition:none !important;-webkit-box-shadow:0 0 10px rgba(0, 0, 0, 0.4);box-shadow:0 0 10px rgba(0, 0, 0, 0.4);opacity:0.8;z-index:100}.reorder-visible ion-reorder .reorder-icon{-webkit-transform:translate3d(0, 0, 0);transform:translate3d(0, 0, 0)}";
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const ReorderGroup = class extends HTMLElement {
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constructor() {
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super();
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this.__registerHost();
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this.ionItemReorder = createEvent(this, "ionItemReorder", 7);
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this.lastToIndex = -1;
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this.cachedHeights = [];
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this.scrollElTop = 0;
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this.scrollElBottom = 0;
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this.scrollElInitial = 0;
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this.containerTop = 0;
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this.containerBottom = 0;
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this.state = 0 /* Idle */;
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/**
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* If `true`, the reorder will be hidden.
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*/
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this.disabled = true;
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}
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disabledChanged() {
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if (this.gesture) {
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this.gesture.enable(!this.disabled);
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}
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}
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async connectedCallback() {
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const contentEl = this.el.closest('ion-content');
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if (contentEl) {
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this.scrollEl = await contentEl.getScrollElement();
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}
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this.gesture = (await import('./index2.js')).createGesture({
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el: this.el,
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gestureName: 'reorder',
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gesturePriority: 110,
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threshold: 0,
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direction: 'y',
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passive: false,
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canStart: detail => this.canStart(detail),
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onStart: ev => this.onStart(ev),
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onMove: ev => this.onMove(ev),
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onEnd: () => this.onEnd(),
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});
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this.disabledChanged();
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}
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disconnectedCallback() {
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this.onEnd();
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if (this.gesture) {
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this.gesture.destroy();
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this.gesture = undefined;
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}
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}
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/**
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* Completes the reorder operation. Must be called by the `ionItemReorder` event.
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*
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* If a list of items is passed, the list will be reordered and returned in the
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* proper order.
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*
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* If no parameters are passed or if `true` is passed in, the reorder will complete
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* and the item will remain in the position it was dragged to. If `false` is passed,
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* the reorder will complete and the item will bounce back to its original position.
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*
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* @param listOrReorder A list of items to be sorted and returned in the new order or a
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* boolean of whether or not the reorder should reposition the item.
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*/
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complete(listOrReorder) {
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return Promise.resolve(this.completeSync(listOrReorder));
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}
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canStart(ev) {
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if (this.selectedItemEl || this.state !== 0 /* Idle */) {
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return false;
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}
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const target = ev.event.target;
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const reorderEl = target.closest('ion-reorder');
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if (!reorderEl) {
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return false;
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}
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const item = findReorderItem(reorderEl, this.el);
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if (!item) {
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return false;
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}
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ev.data = item;
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return true;
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}
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onStart(ev) {
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ev.event.preventDefault();
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const item = this.selectedItemEl = ev.data;
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const heights = this.cachedHeights;
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heights.length = 0;
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const el = this.el;
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const children = el.children;
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if (!children || children.length === 0) {
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return;
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}
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let sum = 0;
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for (let i = 0; i < children.length; i++) {
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const child = children[i];
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sum += child.offsetHeight;
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heights.push(sum);
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child.$ionIndex = i;
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}
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const box = el.getBoundingClientRect();
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this.containerTop = box.top;
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this.containerBottom = box.bottom;
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if (this.scrollEl) {
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const scrollBox = this.scrollEl.getBoundingClientRect();
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this.scrollElInitial = this.scrollEl.scrollTop;
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this.scrollElTop = scrollBox.top + AUTO_SCROLL_MARGIN;
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this.scrollElBottom = scrollBox.bottom - AUTO_SCROLL_MARGIN;
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}
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else {
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this.scrollElInitial = 0;
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this.scrollElTop = 0;
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this.scrollElBottom = 0;
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}
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this.lastToIndex = indexForItem(item);
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this.selectedItemHeight = item.offsetHeight;
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this.state = 1 /* Active */;
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item.classList.add(ITEM_REORDER_SELECTED);
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hapticSelectionStart();
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}
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onMove(ev) {
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const selectedItem = this.selectedItemEl;
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if (!selectedItem) {
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return;
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}
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// Scroll if we reach the scroll margins
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const scroll = this.autoscroll(ev.currentY);
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// // Get coordinate
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const top = this.containerTop - scroll;
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const bottom = this.containerBottom - scroll;
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const currentY = Math.max(top, Math.min(ev.currentY, bottom));
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const deltaY = scroll + currentY - ev.startY;
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const normalizedY = currentY - top;
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const toIndex = this.itemIndexForTop(normalizedY);
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if (toIndex !== this.lastToIndex) {
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const fromIndex = indexForItem(selectedItem);
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this.lastToIndex = toIndex;
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hapticSelectionChanged();
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this.reorderMove(fromIndex, toIndex);
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}
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// Update selected item position
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selectedItem.style.transform = `translateY(${deltaY}px)`;
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}
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onEnd() {
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const selectedItemEl = this.selectedItemEl;
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this.state = 2 /* Complete */;
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if (!selectedItemEl) {
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this.state = 0 /* Idle */;
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return;
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}
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const toIndex = this.lastToIndex;
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const fromIndex = indexForItem(selectedItemEl);
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if (toIndex === fromIndex) {
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this.completeSync();
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}
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else {
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this.ionItemReorder.emit({
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from: fromIndex,
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to: toIndex,
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complete: this.completeSync.bind(this)
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});
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}
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hapticSelectionEnd();
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}
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completeSync(listOrReorder) {
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const selectedItemEl = this.selectedItemEl;
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if (selectedItemEl && this.state === 2 /* Complete */) {
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const children = this.el.children;
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const len = children.length;
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const toIndex = this.lastToIndex;
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const fromIndex = indexForItem(selectedItemEl);
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if (toIndex !== fromIndex && (listOrReorder === undefined || listOrReorder === true)) {
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const ref = (fromIndex < toIndex)
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? children[toIndex + 1]
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: children[toIndex];
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this.el.insertBefore(selectedItemEl, ref);
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}
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if (Array.isArray(listOrReorder)) {
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listOrReorder = reorderArray(listOrReorder, fromIndex, toIndex);
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}
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for (let i = 0; i < len; i++) {
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children[i].style['transform'] = '';
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}
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selectedItemEl.style.transition = '';
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selectedItemEl.classList.remove(ITEM_REORDER_SELECTED);
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this.selectedItemEl = undefined;
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this.state = 0 /* Idle */;
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}
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return listOrReorder;
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}
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itemIndexForTop(deltaY) {
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const heights = this.cachedHeights;
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// TODO: since heights is a sorted array of integers, we can do
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// speed up the search using binary search. Remember that linear-search is still
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// faster than binary-search for small arrays (<64) due CPU branch misprediction.
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for (let i = 0; i < heights.length; i++) {
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if (heights[i] > deltaY) {
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return i;
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}
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}
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return heights.length - 1;
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}
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/********* DOM WRITE ********* */
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reorderMove(fromIndex, toIndex) {
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const itemHeight = this.selectedItemHeight;
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const children = this.el.children;
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for (let i = 0; i < children.length; i++) {
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const style = children[i].style;
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let value = '';
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if (i > fromIndex && i <= toIndex) {
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value = `translateY(${-itemHeight}px)`;
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}
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else if (i < fromIndex && i >= toIndex) {
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value = `translateY(${itemHeight}px)`;
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}
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style['transform'] = value;
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}
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}
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autoscroll(posY) {
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if (!this.scrollEl) {
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return 0;
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}
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let amount = 0;
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if (posY < this.scrollElTop) {
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amount = -SCROLL_JUMP;
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}
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else if (posY > this.scrollElBottom) {
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amount = SCROLL_JUMP;
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}
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if (amount !== 0) {
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this.scrollEl.scrollBy(0, amount);
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}
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return this.scrollEl.scrollTop - this.scrollElInitial;
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}
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render() {
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const mode = getIonMode(this);
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return (h(Host, { class: {
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[mode]: true,
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'reorder-enabled': !this.disabled,
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'reorder-list-active': this.state !== 0 /* Idle */,
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} }));
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}
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get el() { return this; }
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static get watchers() { return {
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"disabled": ["disabledChanged"]
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}; }
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static get style() { return reorderGroupCss; }
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};
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const indexForItem = (element) => {
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return element['$ionIndex'];
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};
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const findReorderItem = (node, container) => {
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let parent;
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while (node) {
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parent = node.parentElement;
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if (parent === container) {
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return node;
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}
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node = parent;
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}
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return undefined;
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};
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const AUTO_SCROLL_MARGIN = 60;
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const SCROLL_JUMP = 10;
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const ITEM_REORDER_SELECTED = 'reorder-selected';
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const reorderArray = (array, from, to) => {
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const element = array[from];
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array.splice(from, 1);
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array.splice(to, 0, element);
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return array.slice();
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};
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const IonReorderGroup = /*@__PURE__*/proxyCustomElement(ReorderGroup, [0,"ion-reorder-group",{"disabled":[4],"state":[32]}]);
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export { IonReorderGroup };
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