184 lines
4.2 KiB
JavaScript
184 lines
4.2 KiB
JavaScript
/**
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* @namespace jvm Holds core methods and classes used by jVectorMap.
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*/
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var jvm = {
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/**
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* Inherits child's prototype from the parent's one.
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* @param {Function} child
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* @param {Function} parent
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*/
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inherits: function (child, parent) {
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function temp() {}
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temp.prototype = parent.prototype;
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child.prototype = new temp();
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child.prototype.constructor = child;
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child.parentClass = parent;
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},
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/**
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* Mixes in methods from the source constructor to the target one.
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* @param {Function} target
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* @param {Function} source
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*/
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mixin: function (target, source) {
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var prop;
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for (prop in source.prototype) {
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if (source.prototype.hasOwnProperty(prop)) {
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target.prototype[prop] = source.prototype[prop];
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}
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}
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},
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min: function (values) {
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var min = Number.MAX_VALUE,
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i;
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if (values instanceof Array) {
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for (i = 0; i < values.length; i++) {
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if (values[i] < min) {
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min = values[i];
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}
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}
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} else {
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for (i in values) {
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if (values[i] < min) {
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min = values[i];
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}
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}
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}
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return min;
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},
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max: function (values) {
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var max = Number.MIN_VALUE,
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i;
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if (values instanceof Array) {
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for (i = 0; i < values.length; i++) {
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if (values[i] > max) {
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max = values[i];
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}
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}
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} else {
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for (i in values) {
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if (values[i] > max) {
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max = values[i];
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}
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}
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}
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return max;
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},
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keys: function (object) {
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var keys = [],
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key;
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for (key in object) {
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keys.push(key);
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}
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return keys;
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},
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values: function (object) {
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var values = [],
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key,
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i;
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for (i = 0; i < arguments.length; i++) {
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object = arguments[i];
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for (key in object) {
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values.push(object[key]);
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}
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}
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return values;
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},
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whenImageLoaded: function (url) {
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var deferred = new jvm.$.Deferred(),
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img = jvm.$("<img/>");
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img
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.on("error", function () {
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deferred.reject();
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})
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.on("load", function () {
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deferred.resolve(img);
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});
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img.attr("src", url);
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return deferred;
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},
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isImageUrl: function (s) {
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return /\.\w{3,4}$/.test(s);
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},
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};
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/**
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* indexOf polyfill for IE < 9
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* https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf
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*/
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if (!Array.prototype.indexOf) {
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Array.prototype.indexOf = function (searchElement, fromIndex) {
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var k;
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// 1. Let O be the result of calling ToObject passing
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// the this value as the argument.
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if (this == null) {
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throw new TypeError('"this" is null or not defined');
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}
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var O = Object(this);
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// 2. Let lenValue be the result of calling the Get
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// internal method of O with the argument "length".
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// 3. Let len be ToUint32(lenValue).
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var len = O.length >>> 0;
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// 4. If len is 0, return -1.
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if (len === 0) {
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return -1;
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}
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// 5. If argument fromIndex was passed let n be
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// ToInteger(fromIndex); else let n be 0.
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var n = +fromIndex || 0;
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if (Math.abs(n) === Infinity) {
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n = 0;
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}
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// 6. If n >= len, return -1.
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if (n >= len) {
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return -1;
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}
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// 7. If n >= 0, then Let k be n.
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// 8. Else, n<0, Let k be len - abs(n).
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// If k is less than 0, then let k be 0.
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k = Math.max(n >= 0 ? n : len - Math.abs(n), 0);
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// 9. Repeat, while k < len
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while (k < len) {
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// a. Let Pk be ToString(k).
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// This is implicit for LHS operands of the in operator
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// b. Let kPresent be the result of calling the
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// HasProperty internal method of O with argument Pk.
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// This step can be combined with c
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// c. If kPresent is true, then
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// i. Let elementK be the result of calling the Get
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// internal method of O with the argument ToString(k).
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// ii. Let same be the result of applying the
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// Strict Equality Comparison Algorithm to
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// searchElement and elementK.
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// iii. If same is true, return k.
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if (k in O && O[k] === searchElement) {
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return k;
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}
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k++;
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}
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return -1;
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};
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}
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