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