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- /**
- * @hidden
- * Given a min and max, restrict the given number
- * to the range.
- * @param min the minimum
- * @param n the value
- * @param max the maximum
- */
- export function clamp(min, n, max) {
- return Math.max(min, Math.min(n, max));
- }
- /** @hidden */
- export function deepCopy(obj) {
- return JSON.parse(JSON.stringify(obj));
- }
- /** @hidden */
- export function deepEqual(a, b) {
- if (a === b) {
- return true;
- }
- return JSON.stringify(a) === JSON.stringify(b);
- }
- /** @hidden */
- export function debounce(fn, wait, immediate = false) {
- var timeout, args, context, timestamp, result;
- return function () {
- context = this;
- args = arguments;
- timestamp = Date.now();
- var later = function () {
- var last = Date.now() - timestamp;
- if (last < wait) {
- timeout = setTimeout(later, wait - last);
- }
- else {
- timeout = null;
- if (!immediate)
- result = fn.apply(context, args);
- }
- };
- var callNow = immediate && !timeout;
- if (!timeout) {
- timeout = setTimeout(later, wait);
- }
- if (callNow)
- result = fn.apply(context, args);
- return result;
- };
- }
- /**
- * @hidden
- * Rewrites an absolute URL so it works across file and http based engines
- */
- export function normalizeURL(url) {
- const ionic = window['Ionic'];
- if (ionic && ionic.normalizeURL) {
- return ionic.normalizeURL(url);
- }
- return url;
- }
- /**
- * @hidden
- * Apply default arguments if they don't exist in
- * the first object.
- * @param {any} dest the destination to apply defaults to.
- */
- export function defaults(dest, ..._args) {
- for (var i = arguments.length - 1; i >= 1; i--) {
- var source = arguments[i];
- if (source) {
- for (var key in source) {
- if (source.hasOwnProperty(key) && !dest.hasOwnProperty(key)) {
- dest[key] = source[key];
- }
- }
- }
- }
- return dest;
- }
- /** @hidden */
- export function isBoolean(val) { return typeof val === 'boolean'; }
- /** @hidden */
- export function isString(val) { return typeof val === 'string'; }
- /** @hidden */
- export function isNumber(val) { return typeof val === 'number'; }
- /** @hidden */
- export function isFunction(val) { return typeof val === 'function'; }
- /** @hidden */
- export function isDefined(val) { return typeof val !== 'undefined'; }
- /** @hidden */
- export function isUndefined(val) { return typeof val === 'undefined'; }
- /** @hidden */
- export function isPresent(val) { return val !== undefined && val !== null; }
- /** @hidden */
- export function isBlank(val) { return val === undefined || val === null; }
- /** @hidden */
- export function isObject(val) { return typeof val === 'object'; }
- /** @hidden */
- export function isArray(val) { return Array.isArray(val); }
- /** @hidden */
- export function isPrimitive(val) {
- return isString(val) || isBoolean(val) || (isNumber(val) && !isNaN(val));
- }
- /** @hidden */
- export function isTrueProperty(val) {
- if (typeof val === 'string') {
- val = val.toLowerCase().trim();
- return (val === 'true' || val === 'on' || val === '');
- }
- return !!val;
- }
- /** @hidden */
- export function isCheckedProperty(a, b) {
- if (a === undefined || a === null || a === '') {
- return (b === undefined || b === null || b === '');
- }
- else if (a === true || a === 'true') {
- return (b === true || b === 'true');
- }
- else if (a === false || a === 'false') {
- return (b === false || b === 'false');
- }
- else if (a === 0 || a === '0') {
- return (b === 0 || b === '0');
- }
- // not using strict comparison on purpose
- return (a == b); // tslint:disable-line
- }
- /**
- * @hidden
- * Given a side, return if it should be on the right
- * based on the value of dir
- * @param side the side
- * @param isRTL whether the application dir is rtl
- * @param defaultRight whether the default side is right
- */
- export function isRightSide(side, isRTL, defaultRight = false) {
- switch (side) {
- case 'right': return true;
- case 'left': return false;
- case 'end': return !isRTL;
- case 'start': return isRTL;
- default: return defaultRight ? !isRTL : isRTL;
- }
- }
- /** @hidden */
- export function reorderArray(array, indexes) {
- const element = array[indexes.from];
- array.splice(indexes.from, 1);
- array.splice(indexes.to, 0, element);
- return array;
- }
- /** @hidden */
- export function removeArrayItem(array, item) {
- const index = array.indexOf(item);
- return !!~index && !!array.splice(index, 1);
- }
- /** @hidden */
- export function swipeShouldReset(isResetDirection, isMovingFast, isOnResetZone) {
- // The logic required to know when the sliding item should close (openAmount=0)
- // depends on three booleans (isCloseDirection, isMovingFast, isOnCloseZone)
- // and it ended up being too complicated to be written manually without errors
- // so the truth table is attached below: (0=false, 1=true)
- // isCloseDirection | isMovingFast | isOnCloseZone || shouldClose
- // 0 | 0 | 0 || 0
- // 0 | 0 | 1 || 1
- // 0 | 1 | 0 || 0
- // 0 | 1 | 1 || 0
- // 1 | 0 | 0 || 0
- // 1 | 0 | 1 || 1
- // 1 | 1 | 0 || 1
- // 1 | 1 | 1 || 1
- // The resulting expression was generated by resolving the K-map (Karnaugh map):
- let shouldClose = (!isMovingFast && isOnResetZone) || (isResetDirection && isMovingFast);
- return shouldClose;
- }
- /** @hidden */
- const ASSERT_ENABLED = true;
- /** @hidden */
- function _runInDev(fn) {
- if (ASSERT_ENABLED === true) {
- return fn();
- }
- }
- /** @hidden */
- function _assert(actual, reason) {
- if (!actual && ASSERT_ENABLED === true) {
- let message = 'IONIC ASSERT: ' + reason;
- console.error(message);
- debugger; // tslint:disable-line
- throw new Error(message);
- }
- }
- /** @hidden */
- export function requestIonicCallback(functionToLazy) {
- if ('requestIdleCallback' in window) {
- return window.requestIdleCallback(functionToLazy);
- }
- else {
- return setTimeout(functionToLazy, 500);
- }
- }
- /** @hidden */
- export { _assert as assert };
- /** @hidden */
- export { _runInDev as runInDev };
- //# sourceMappingURL=util.js.map
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