ionic-framework
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An advanced HTML5 mobile app framework built on Angular2
222 lines (221 loc) • 6.83 kB
JavaScript
/**
* Given a min and max, restrict the given number
* to the range.
* @param min the minimum
* @param n the value
* @param max the maximum
*/
function clamp(min, n, max) {
return Math.max(min, Math.min(n, max));
}
exports.clamp = clamp;
/**
* The assign() method is used to copy the values of all enumerable own
* properties from one or more source objects to a target object. It will
* return the target object. When available, this method will use
* `Object.assign()` under-the-hood.
* @param target The target object
* @param source(s) The source object
*/
function assign() {
var args = [];
for (var _i = 0; _i < arguments.length; _i++) {
args[_i - 0] = arguments[_i];
}
if (typeof Object.assign !== 'function') {
// use the old-school shallow extend method
return _baseExtend(args[0], [].slice.call(args, 1), false);
}
// use the built in ES6 Object.assign method
return Object.assign.apply(null, args);
}
exports.assign = assign;
/**
* Do a deep extend (merge).
* @param dst the destination
* @param ... the param objects
*/
function merge(dst) {
var args = [];
for (var _i = 1; _i < arguments.length; _i++) {
args[_i - 1] = arguments[_i];
}
return _baseExtend(dst, [].slice.call(arguments, 1), true);
}
exports.merge = merge;
function _baseExtend(dst, objs, deep) {
for (var i = 0, ii = objs.length; i < ii; ++i) {
var obj = objs[i];
if (!obj || !exports.isObject(obj) && !exports.isFunction(obj))
continue;
var keys = Object.keys(obj);
for (var j = 0, jj = keys.length; j < jj; j++) {
var key = keys[j];
var src = obj[key];
if (deep && exports.isObject(src)) {
if (!exports.isObject(dst[key]))
dst[key] = exports.isArray(src) ? [] : {};
_baseExtend(dst[key], [src], true);
}
else {
dst[key] = src;
}
}
}
return dst;
}
function debounce(fn, wait, immediate) {
if (immediate === void 0) { 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;
};
}
exports.debounce = debounce;
/**
* Apply default arguments if they don't exist in
* the first object.
* @param the destination to apply defaults to.
*/
function defaults(dest) {
var args = [];
for (var _i = 1; _i < arguments.length; _i++) {
args[_i - 1] = arguments[_i];
}
for (var i = arguments.length - 1; i >= 1; i--) {
var source = arguments[i] || {};
for (var key in source) {
if (source.hasOwnProperty(key) && !dest.hasOwnProperty(key)) {
dest[key] = source[key];
}
}
}
return dest;
}
exports.defaults = defaults;
exports.isBoolean = function (val) { return typeof val === 'boolean'; };
exports.isString = function (val) { return typeof val === 'string'; };
exports.isNumber = function (val) { return typeof val === 'number'; };
exports.isFunction = function (val) { return typeof val === 'function'; };
exports.isDefined = function (val) { return typeof val !== 'undefined'; };
exports.isUndefined = function (val) { return typeof val === 'undefined'; };
exports.isBlank = function (val) { return val === undefined || val === null; };
exports.isObject = function (val) { return typeof val === 'object'; };
exports.isArray = Array.isArray;
exports.isTrueProperty = function (val) {
if (typeof val === 'string') {
val = val.toLowerCase().trim();
return (val === 'true' || val === 'on' || val === '');
}
return !!val;
};
/**
* Convert a string in the format thisIsAString to a slug format this-is-a-string
*/
function pascalCaseToDashCase(val) {
if (val === void 0) { val = ''; }
return val.charAt(0).toLowerCase() + val.substring(1).replace(/[A-Z]/g, function (match) {
return '-' + match.toLowerCase();
});
}
exports.pascalCaseToDashCase = pascalCaseToDashCase;
var uid = 0;
function nextUid() {
return ++uid;
}
exports.nextUid = nextUid;
exports.array = {
find: function (arr, cb) {
for (var i = 0, ii = arr.length; i < ii; i++) {
if (cb(arr[i], i))
return arr[i];
}
},
remove: function (arr, itemOrIndex) {
var index = -1;
if (exports.isNumber(itemOrIndex)) {
index = itemOrIndex;
}
else {
index = arr.indexOf(itemOrIndex);
}
if (index < 0) {
return false;
}
arr.splice(index, 1);
return true;
}
};
/**
* Grab all query strings keys and values.
* @param url
*/
function getQuerystring(url) {
var queryParams = {};
if (url) {
var startIndex = url.indexOf('?');
if (startIndex !== -1) {
var queries = url.slice(startIndex + 1).split('&');
queries.forEach(function (param) {
var split = param.split('=');
queryParams[split[0].toLowerCase()] = split[1].split('#')[0];
});
}
}
return queryParams;
}
exports.getQuerystring = getQuerystring;
/**
* Throttle the given fun, only allowing it to be
* called at most every `wait` ms.
*/
function throttle(fn, wait, options) {
var context, args, result;
var timeout = null;
var previous = 0;
options || (options = {});
var later = function () {
previous = options.leading === false ? 0 : Date.now();
timeout = null;
result = fn.apply(context, args);
};
return function () {
var now = Date.now();
if (!previous && options.leading === false)
previous = now;
var remaining = wait - (now - previous);
context = this;
args = arguments;
if (remaining <= 0) {
clearTimeout(timeout);
timeout = null;
previous = now;
result = fn.apply(context, args);
}
else if (!timeout && options.trailing !== false) {
timeout = setTimeout(later, remaining);
}
return result;
};
}
exports.throttle = throttle;