ngx-pluto
Version:
82 lines • 8.35 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
/**
* Moves an item one index in an array to another.
* @template T
* @param {?} array Array in which to move the item.
* @param {?} fromIndex Starting index of the item.
* @param {?} toIndex Index to which the item should be moved.
* @return {?}
*/
export function moveItemInArray(array, fromIndex, toIndex) {
/** @type {?} */
const from = clamp(fromIndex, array.length - 1);
/** @type {?} */
const to = clamp(toIndex, array.length - 1);
if (from === to) {
return;
}
/** @type {?} */
const target = array[from];
/** @type {?} */
const delta = to < from ? -1 : 1;
for (let i = from; i !== to; i += delta) {
array[i] = array[i + delta];
}
array[to] = target;
}
/**
* Moves an item from one array to another.
* @template T
* @param {?} currentArray Array from which to transfer the item.
* @param {?} targetArray Array into which to put the item.
* @param {?} currentIndex Index of the item in its current array.
* @param {?} targetIndex Index at which to insert the item.
* @return {?}
*/
export function transferArrayItem(currentArray, targetArray, currentIndex, targetIndex) {
/** @type {?} */
const from = clamp(currentIndex, currentArray.length - 1);
/** @type {?} */
const to = clamp(targetIndex, targetArray.length);
if (currentArray.length) {
targetArray.splice(to, 0, currentArray.splice(from, 1)[0]);
}
}
/**
* Copies an item from one array to another, leaving it in its
* original position in current array.
* @template T
* @param {?} currentArray Array from which to copy the item.
* @param {?} targetArray Array into which is copy the item.
* @param {?} currentIndex Index of the item in its current array.
* @param {?} targetIndex Index at which to insert the item.
*
* @return {?}
*/
export function copyArrayItem(currentArray, targetArray, currentIndex, targetIndex) {
/** @type {?} */
const to = clamp(targetIndex, targetArray.length);
if (currentArray.length) {
targetArray.splice(to, 0, currentArray[currentIndex]);
}
}
/**
* Clamps a number between zero and a maximum.
* @param {?} value
* @param {?} max
* @return {?}
*/
function clamp(value, max) {
return Math.max(0, Math.min(max, value));
}
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