/community/server/src/main/resources/webadmin-html/js/lib/backbone.js
JavaScript | 2007 lines | 1251 code | 262 blank | 494 comment | 417 complexity | 8a904b82c8c1dd028ef36f63d570d857 MD5 | raw file
Possible License(s): AGPL-1.0, MPL-2.0-no-copyleft-exception, GPL-2.0, JSON, LGPL-2.1, GPL-3.0, MIT, BSD-3-Clause, Apache-2.0, AGPL-3.0, CC-BY-SA-3.0
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- // Underscore.js 1.1.7
- // (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
- // Underscore is freely distributable under the MIT license.
- // Portions of Underscore are inspired or borrowed from Prototype,
- // Oliver Steele's Functional, and John Resig's Micro-Templating.
- // For all details and documentation:
- // http://documentcloud.github.com/underscore
- (function() {
- // Baseline setup
- // --------------
- // Establish the root object, `window` in the browser, or `global` on the server.
- var root = this;
- // Save the previous value of the `_` variable.
- var previousUnderscore = root._;
- // Establish the object that gets returned to break out of a loop iteration.
- var breaker = {};
- // Save bytes in the minified (but not gzipped) version:
- var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;
- // Create quick reference variables for speed access to core prototypes.
- var slice = ArrayProto.slice,
- unshift = ArrayProto.unshift,
- toString = ObjProto.toString,
- hasOwnProperty = ObjProto.hasOwnProperty;
- // All **ECMAScript 5** native function implementations that we hope to use
- // are declared here.
- var
- nativeForEach = ArrayProto.forEach,
- nativeMap = ArrayProto.map,
- nativeReduce = ArrayProto.reduce,
- nativeReduceRight = ArrayProto.reduceRight,
- nativeFilter = ArrayProto.filter,
- nativeEvery = ArrayProto.every,
- nativeSome = ArrayProto.some,
- nativeIndexOf = ArrayProto.indexOf,
- nativeLastIndexOf = ArrayProto.lastIndexOf,
- nativeIsArray = Array.isArray,
- nativeKeys = Object.keys,
- nativeBind = FuncProto.bind;
- // Create a safe reference to the Underscore object for use below.
- var _ = function(obj) { return new wrapper(obj); };
- // Export the Underscore object for **CommonJS**, with backwards-compatibility
- // for the old `require()` API. If we're not in CommonJS, add `_` to the
- // global object.
- if (typeof module !== 'undefined' && module.exports) {
- module.exports = _;
- _._ = _;
- } else {
- // Exported as a string, for Closure Compiler "advanced" mode.
- root['_'] = _;
- }
- // Current version.
- _.VERSION = '1.1.7';
- // Collection Functions
- // --------------------
- // The cornerstone, an `each` implementation, aka `forEach`.
- // Handles objects with the built-in `forEach`, arrays, and raw objects.
- // Delegates to **ECMAScript 5**'s native `forEach` if available.
- var each = _.each = _.forEach = function(obj, iterator, context) {
- if (obj == null) return;
- if (nativeForEach && obj.forEach === nativeForEach) {
- obj.forEach(iterator, context);
- } else if (obj.length === +obj.length) {
- for (var i = 0, l = obj.length; i < l; i++) {
- if (i in obj && iterator.call(context, obj[i], i, obj) === breaker) return;
- }
- } else {
- for (var key in obj) {
- if (hasOwnProperty.call(obj, key)) {
- if (iterator.call(context, obj[key], key, obj) === breaker) return;
- }
- }
- }
- };
- // Return the results of applying the iterator to each element.
- // Delegates to **ECMAScript 5**'s native `map` if available.
- _.map = function(obj, iterator, context) {
- var results = [];
- if (obj == null) return results;
- if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
- each(obj, function(value, index, list) {
- results[results.length] = iterator.call(context, value, index, list);
- });
- return results;
- };
- // **Reduce** builds up a single result from a list of values, aka `inject`,
- // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
- _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
- var initial = memo !== void 0;
- if (obj == null) obj = [];
- if (nativeReduce && obj.reduce === nativeReduce) {
- if (context) iterator = _.bind(iterator, context);
- return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
- }
- each(obj, function(value, index, list) {
- if (!initial) {
- memo = value;
- initial = true;
- } else {
- memo = iterator.call(context, memo, value, index, list);
- }
- });
- if (!initial) throw new TypeError("Reduce of empty array with no initial value");
- return memo;
- };
- // The right-associative version of reduce, also known as `foldr`.
- // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
- _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
- if (obj == null) obj = [];
- if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
- if (context) iterator = _.bind(iterator, context);
- return memo !== void 0 ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
- }
- var reversed = (_.isArray(obj) ? obj.slice() : _.toArray(obj)).reverse();
- return _.reduce(reversed, iterator, memo, context);
- };
- // Return the first value which passes a truth test. Aliased as `detect`.
- _.find = _.detect = function(obj, iterator, context) {
- var result;
- any(obj, function(value, index, list) {
- if (iterator.call(context, value, index, list)) {
- result = value;
- return true;
- }
- });
- return result;
- };
- // Return all the elements that pass a truth test.
- // Delegates to **ECMAScript 5**'s native `filter` if available.
- // Aliased as `select`.
- _.filter = _.select = function(obj, iterator, context) {
- var results = [];
- if (obj == null) return results;
- if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
- each(obj, function(value, index, list) {
- if (iterator.call(context, value, index, list)) results[results.length] = value;
- });
- return results;
- };
- // Return all the elements for which a truth test fails.
- _.reject = function(obj, iterator, context) {
- var results = [];
- if (obj == null) return results;
- each(obj, function(value, index, list) {
- if (!iterator.call(context, value, index, list)) results[results.length] = value;
- });
- return results;
- };
- // Determine whether all of the elements match a truth test.
- // Delegates to **ECMAScript 5**'s native `every` if available.
- // Aliased as `all`.
- _.every = _.all = function(obj, iterator, context) {
- var result = true;
- if (obj == null) return result;
- if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
- each(obj, function(value, index, list) {
- if (!(result = result && iterator.call(context, value, index, list))) return breaker;
- });
- return result;
- };
- // Determine if at least one element in the object matches a truth test.
- // Delegates to **ECMAScript 5**'s native `some` if available.
- // Aliased as `any`.
- var any = _.some = _.any = function(obj, iterator, context) {
- iterator = iterator || _.identity;
- var result = false;
- if (obj == null) return result;
- if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
- each(obj, function(value, index, list) {
- if (result |= iterator.call(context, value, index, list)) return breaker;
- });
- return !!result;
- };
- // Determine if a given value is included in the array or object using `===`.
- // Aliased as `contains`.
- _.include = _.contains = function(obj, target) {
- var found = false;
- if (obj == null) return found;
- if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
- any(obj, function(value) {
- if (found = value === target) return true;
- });
- return found;
- };
- // Invoke a method (with arguments) on every item in a collection.
- _.invoke = function(obj, method) {
- var args = slice.call(arguments, 2);
- return _.map(obj, function(value) {
- return (method.call ? method || value : value[method]).apply(value, args);
- });
- };
- // Convenience version of a common use case of `map`: fetching a property.
- _.pluck = function(obj, key) {
- return _.map(obj, function(value){ return value[key]; });
- };
- // Return the maximum element or (element-based computation).
- _.max = function(obj, iterator, context) {
- if (!iterator && _.isArray(obj)) return Math.max.apply(Math, obj);
- var result = {computed : -Infinity};
- each(obj, function(value, index, list) {
- var computed = iterator ? iterator.call(context, value, index, list) : value;
- computed >= result.computed && (result = {value : value, computed : computed});
- });
- return result.value;
- };
- // Return the minimum element (or element-based computation).
- _.min = function(obj, iterator, context) {
- if (!iterator && _.isArray(obj)) return Math.min.apply(Math, obj);
- var result = {computed : Infinity};
- each(obj, function(value, index, list) {
- var computed = iterator ? iterator.call(context, value, index, list) : value;
- computed < result.computed && (result = {value : value, computed : computed});
- });
- return result.value;
- };
- // Sort the object's values by a criterion produced by an iterator.
- _.sortBy = function(obj, iterator, context) {
- return _.pluck(_.map(obj, function(value, index, list) {
- return {
- value : value,
- criteria : iterator.call(context, value, index, list)
- };
- }).sort(function(left, right) {
- var a = left.criteria, b = right.criteria;
- return a < b ? -1 : a > b ? 1 : 0;
- }), 'value');
- };
- // Groups the object's values by a criterion produced by an iterator
- _.groupBy = function(obj, iterator) {
- var result = {};
- each(obj, function(value, index) {
- var key = iterator(value, index);
- (result[key] || (result[key] = [])).push(value);
- });
- return result;
- };
- // Use a comparator function to figure out at what index an object should
- // be inserted so as to maintain order. Uses binary search.
- _.sortedIndex = function(array, obj, iterator) {
- iterator || (iterator = _.identity);
- var low = 0, high = array.length;
- while (low < high) {
- var mid = (low + high) >> 1;
- iterator(array[mid]) < iterator(obj) ? low = mid + 1 : high = mid;
- }
- return low;
- };
- // Safely convert anything iterable into a real, live array.
- _.toArray = function(iterable) {
- if (!iterable) return [];
- if (iterable.toArray) return iterable.toArray();
- if (_.isArray(iterable)) return slice.call(iterable);
- if (_.isArguments(iterable)) return slice.call(iterable);
- return _.values(iterable);
- };
- // Return the number of elements in an object.
- _.size = function(obj) {
- return _.toArray(obj).length;
- };
- // Array Functions
- // ---------------
- // Get the first element of an array. Passing **n** will return the first N
- // values in the array. Aliased as `head`. The **guard** check allows it to work
- // with `_.map`.
- _.first = _.head = function(array, n, guard) {
- return (n != null) && !guard ? slice.call(array, 0, n) : array[0];
- };
- // Returns everything but the first entry of the array. Aliased as `tail`.
- // Especially useful on the arguments object. Passing an **index** will return
- // the rest of the values in the array from that index onward. The **guard**
- // check allows it to work with `_.map`.
- _.rest = _.tail = function(array, index, guard) {
- return slice.call(array, (index == null) || guard ? 1 : index);
- };
- // Get the last element of an array.
- _.last = function(array) {
- return array[array.length - 1];
- };
- // Trim out all falsy values from an array.
- _.compact = function(array) {
- return _.filter(array, function(value){ return !!value; });
- };
- // Return a completely flattened version of an array.
- _.flatten = function(array) {
- return _.reduce(array, function(memo, value) {
- if (_.isArray(value)) return memo.concat(_.flatten(value));
- memo[memo.length] = value;
- return memo;
- }, []);
- };
- // Return a version of the array that does not contain the specified value(s).
- _.without = function(array) {
- return _.difference(array, slice.call(arguments, 1));
- };
- // Produce a duplicate-free version of the array. If the array has already
- // been sorted, you have the option of using a faster algorithm.
- // Aliased as `unique`.
- _.uniq = _.unique = function(array, isSorted, iterator) {
- var initial = iterator ? _.map(array, iterator) : array;
- var result = [];
- _.reduce(initial, function(memo, el, i) {
- if (0 == i || (isSorted === true ? _.last(memo) != el : !_.include(memo, el))) {
- memo[memo.length] = el;
- result[result.length] = array[i];
- }
- return memo;
- }, []);
- return result;
- };
- // Produce an array that contains the union: each distinct element from all of
- // the passed-in arrays.
- _.union = function() {
- return _.uniq(_.flatten(arguments));
- };
- // Produce an array that contains every item shared between all the
- // passed-in arrays. (Aliased as "intersect" for back-compat.)
- _.intersection = _.intersect = function(array) {
- var rest = slice.call(arguments, 1);
- return _.filter(_.uniq(array), function(item) {
- return _.every(rest, function(other) {
- return _.indexOf(other, item) >= 0;
- });
- });
- };
- // Take the difference between one array and another.
- // Only the elements present in just the first array will remain.
- _.difference = function(array, other) {
- return _.filter(array, function(value){ return !_.include(other, value); });
- };
- // Zip together multiple lists into a single array -- elements that share
- // an index go together.
- _.zip = function() {
- var args = slice.call(arguments);
- var length = _.max(_.pluck(args, 'length'));
- var results = new Array(length);
- for (var i = 0; i < length; i++) results[i] = _.pluck(args, "" + i);
- return results;
- };
- // If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**),
- // we need this function. Return the position of the first occurrence of an
- // item in an array, or -1 if the item is not included in the array.
- // Delegates to **ECMAScript 5**'s native `indexOf` if available.
- // If the array is large and already in sort order, pass `true`
- // for **isSorted** to use binary search.
- _.indexOf = function(array, item, isSorted) {
- if (array == null) return -1;
- var i, l;
- if (isSorted) {
- i = _.sortedIndex(array, item);
- return array[i] === item ? i : -1;
- }
- if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
- for (i = 0, l = array.length; i < l; i++) if (array[i] === item) return i;
- return -1;
- };
- // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
- _.lastIndexOf = function(array, item) {
- if (array == null) return -1;
- if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) return array.lastIndexOf(item);
- var i = array.length;
- while (i--) if (array[i] === item) return i;
- return -1;
- };
- // Generate an integer Array containing an arithmetic progression. A port of
- // the native Python `range()` function. See
- // [the Python documentation](http://docs.python.org/library/functions.html#range).
- _.range = function(start, stop, step) {
- if (arguments.length <= 1) {
- stop = start || 0;
- start = 0;
- }
- step = arguments[2] || 1;
- var len = Math.max(Math.ceil((stop - start) / step), 0);
- var idx = 0;
- var range = new Array(len);
- while(idx < len) {
- range[idx++] = start;
- start += step;
- }
- return range;
- };
- // Function (ahem) Functions
- // ------------------
- // Create a function bound to a given object (assigning `this`, and arguments,
- // optionally). Binding with arguments is also known as `curry`.
- // Delegates to **ECMAScript 5**'s native `Function.bind` if available.
- // We check for `func.bind` first, to fail fast when `func` is undefined.
- _.bind = function(func, obj) {
- if (func.bind === nativeBind && nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
- var args = slice.call(arguments, 2);
- return function() {
- return func.apply(obj, args.concat(slice.call(arguments)));
- };
- };
- // Bind all of an object's methods to that object. Useful for ensuring that
- // all callbacks defined on an object belong to it.
- _.bindAll = function(obj) {
- var funcs = slice.call(arguments, 1);
- if (funcs.length == 0) funcs = _.functions(obj);
- each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
- return obj;
- };
- // Memoize an expensive function by storing its results.
- _.memoize = function(func, hasher) {
- var memo = {};
- hasher || (hasher = _.identity);
- return function() {
- var key = hasher.apply(this, arguments);
- return hasOwnProperty.call(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
- };
- };
- // Delays a function for the given number of milliseconds, and then calls
- // it with the arguments supplied.
- _.delay = function(func, wait) {
- var args = slice.call(arguments, 2);
- return setTimeout(function(){ return func.apply(func, args); }, wait);
- };
- // Defers a function, scheduling it to run after the current call stack has
- // cleared.
- _.defer = function(func) {
- return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
- };
- // Internal function used to implement `_.throttle` and `_.debounce`.
- var limit = function(func, wait, debounce) {
- var timeout;
- return function() {
- var context = this, args = arguments;
- var throttler = function() {
- timeout = null;
- func.apply(context, args);
- };
- if (debounce) clearTimeout(timeout);
- if (debounce || !timeout) timeout = setTimeout(throttler, wait);
- };
- };
- // Returns a function, that, when invoked, will only be triggered at most once
- // during a given window of time.
- _.throttle = function(func, wait) {
- return limit(func, wait, false);
- };
- // Returns a function, that, as long as it continues to be invoked, will not
- // be triggered. The function will be called after it stops being called for
- // N milliseconds.
- _.debounce = function(func, wait) {
- return limit(func, wait, true);
- };
- // Returns a function that will be executed at most one time, no matter how
- // often you call it. Useful for lazy initialization.
- _.once = function(func) {
- var ran = false, memo;
- return function() {
- if (ran) return memo;
- ran = true;
- return memo = func.apply(this, arguments);
- };
- };
- // Returns the first function passed as an argument to the second,
- // allowing you to adjust arguments, run code before and after, and
- // conditionally execute the original function.
- _.wrap = function(func, wrapper) {
- return function() {
- var args = [func].concat(slice.call(arguments));
- return wrapper.apply(this, args);
- };
- };
- // Returns a function that is the composition of a list of functions, each
- // consuming the return value of the function that follows.
- _.compose = function() {
- var funcs = slice.call(arguments);
- return function() {
- var args = slice.call(arguments);
- for (var i = funcs.length - 1; i >= 0; i--) {
- args = [funcs[i].apply(this, args)];
- }
- return args[0];
- };
- };
- // Returns a function that will only be executed after being called N times.
- _.after = function(times, func) {
- return function() {
- if (--times < 1) { return func.apply(this, arguments); }
- };
- };
- // Object Functions
- // ----------------
- // Retrieve the names of an object's properties.
- // Delegates to **ECMAScript 5**'s native `Object.keys`
- _.keys = nativeKeys || function(obj) {
- if (obj !== Object(obj)) throw new TypeError('Invalid object');
- var keys = [];
- for (var key in obj) if (hasOwnProperty.call(obj, key)) keys[keys.length] = key;
- return keys;
- };
- // Retrieve the values of an object's properties.
- _.values = function(obj) {
- return _.map(obj, _.identity);
- };
- // Return a sorted list of the function names available on the object.
- // Aliased as `methods`
- _.functions = _.methods = function(obj) {
- var names = [];
- for (var key in obj) {
- if (_.isFunction(obj[key])) names.push(key);
- }
- return names.sort();
- };
- // Extend a given object with all the properties in passed-in object(s).
- _.extend = function(obj) {
- each(slice.call(arguments, 1), function(source) {
- for (var prop in source) {
- if (source[prop] !== void 0) obj[prop] = source[prop];
- }
- });
- return obj;
- };
- // Fill in a given object with default properties.
- _.defaults = function(obj) {
- each(slice.call(arguments, 1), function(source) {
- for (var prop in source) {
- if (obj[prop] == null) obj[prop] = source[prop];
- }
- });
- return obj;
- };
- // Create a (shallow-cloned) duplicate of an object.
- _.clone = function(obj) {
- return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
- };
- // Invokes interceptor with the obj, and then returns obj.
- // The primary purpose of this method is to "tap into" a method chain, in
- // order to perform operations on intermediate results within the chain.
- _.tap = function(obj, interceptor) {
- interceptor(obj);
- return obj;
- };
- // Perform a deep comparison to check if two objects are equal.
- _.isEqual = function(a, b) {
- // Check object identity.
- if (a === b) return true;
- // Different types?
- var atype = typeof(a), btype = typeof(b);
- if (atype != btype) return false;
- // Basic equality test (watch out for coercions).
- if (a == b) return true;
- // One is falsy and the other truthy.
- if ((!a && b) || (a && !b)) return false;
- // Unwrap any wrapped objects.
- if (a._chain) a = a._wrapped;
- if (b._chain) b = b._wrapped;
- // One of them implements an isEqual()?
- if (a.isEqual) return a.isEqual(b);
- if (b.isEqual) return b.isEqual(a);
- // Check dates' integer values.
- if (_.isDate(a) && _.isDate(b)) return a.getTime() === b.getTime();
- // Both are NaN?
- if (_.isNaN(a) && _.isNaN(b)) return false;
- // Compare regular expressions.
- if (_.isRegExp(a) && _.isRegExp(b))
- return a.source === b.source &&
- a.global === b.global &&
- a.ignoreCase === b.ignoreCase &&
- a.multiline === b.multiline;
- // If a is not an object by this point, we can't handle it.
- if (atype !== 'object') return false;
- // Check for different array lengths before comparing contents.
- if (a.length && (a.length !== b.length)) return false;
- // Nothing else worked, deep compare the contents.
- var aKeys = _.keys(a), bKeys = _.keys(b);
- // Different object sizes?
- if (aKeys.length != bKeys.length) return false;
- // Recursive comparison of contents.
- for (var key in a) if (!(key in b) || !_.isEqual(a[key], b[key])) return false;
- return true;
- };
- // Is a given array or object empty?
- _.isEmpty = function(obj) {
- if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
- for (var key in obj) if (hasOwnProperty.call(obj, key)) return false;
- return true;
- };
- // Is a given value a DOM element?
- _.isElement = function(obj) {
- return !!(obj && obj.nodeType == 1);
- };
- // Is a given value an array?
- // Delegates to ECMA5's native Array.isArray
- _.isArray = nativeIsArray || function(obj) {
- return toString.call(obj) === '[object Array]';
- };
- // Is a given variable an object?
- _.isObject = function(obj) {
- return obj === Object(obj);
- };
- // Is a given variable an arguments object?
- _.isArguments = function(obj) {
- return !!(obj && hasOwnProperty.call(obj, 'callee'));
- };
- // Is a given value a function?
- _.isFunction = function(obj) {
- return !!(obj && obj.constructor && obj.call && obj.apply);
- };
- // Is a given value a string?
- _.isString = function(obj) {
- return !!(obj === '' || (obj && obj.charCodeAt && obj.substr));
- };
- // Is a given value a number?
- _.isNumber = function(obj) {
- return !!(obj === 0 || (obj && obj.toExponential && obj.toFixed));
- };
- // Is the given value `NaN`? `NaN` happens to be the only value in JavaScript
- // that does not equal itself.
- _.isNaN = function(obj) {
- return obj !== obj;
- };
- // Is a given value a boolean?
- _.isBoolean = function(obj) {
- return obj === true || obj === false;
- };
- // Is a given value a date?
- _.isDate = function(obj) {
- return !!(obj && obj.getTimezoneOffset && obj.setUTCFullYear);
- };
- // Is the given value a regular expression?
- _.isRegExp = function(obj) {
- return !!(obj && obj.test && obj.exec && (obj.ignoreCase || obj.ignoreCase === false));
- };
- // Is a given value equal to null?
- _.isNull = function(obj) {
- return obj === null;
- };
- // Is a given variable undefined?
- _.isUndefined = function(obj) {
- return obj === void 0;
- };
- // Utility Functions
- // -----------------
- // Run Underscore.js in *noConflict* mode, returning the `_` variable to its
- // previous owner. Returns a reference to the Underscore object.
- _.noConflict = function() {
- root._ = previousUnderscore;
- return this;
- };
- // Keep the identity function around for default iterators.
- _.identity = function(value) {
- return value;
- };
- // Run a function **n** times.
- _.times = function (n, iterator, context) {
- for (var i = 0; i < n; i++) iterator.call(context, i);
- };
- // Add your own custom functions to the Underscore object, ensuring that
- // they're correctly added to the OOP wrapper as well.
- _.mixin = function(obj) {
- each(_.functions(obj), function(name){
- addToWrapper(name, _[name] = obj[name]);
- });
- };
- // Generate a unique integer id (unique within the entire client session).
- // Useful for temporary DOM ids.
- var idCounter = 0;
- _.uniqueId = function(prefix) {
- var id = idCounter++;
- return prefix ? prefix + id : id;
- };
- // By default, Underscore uses ERB-style template delimiters, change the
- // following template settings to use alternative delimiters.
- _.templateSettings = {
- evaluate : /<%([\s\S]+?)%>/g,
- interpolate : /<%=([\s\S]+?)%>/g
- };
- // JavaScript micro-templating, similar to John Resig's implementation.
- // Underscore templating handles arbitrary delimiters, preserves whitespace,
- // and correctly escapes quotes within interpolated code.
- _.template = function(str, data) {
- var c = _.templateSettings;
- var tmpl = 'var __p=[],print=function(){__p.push.apply(__p,arguments);};' +
- 'with(obj||{}){__p.push(\'' +
- str.replace(/\\/g, '\\\\')
- .replace(/'/g, "\\'")
- .replace(c.interpolate, function(match, code) {
- return "'," + code.replace(/\\'/g, "'") + ",'";
- })
- .replace(c.evaluate || null, function(match, code) {
- return "');" + code.replace(/\\'/g, "'")
- .replace(/[\r\n\t]/g, ' ') + "__p.push('";
- })
- .replace(/\r/g, '\\r')
- .replace(/\n/g, '\\n')
- .replace(/\t/g, '\\t')
- + "');}return __p.join('');";
- var func = new Function('obj', tmpl);
- return data ? func(data) : func;
- };
- // The OOP Wrapper
- // ---------------
- // If Underscore is called as a function, it returns a wrapped object that
- // can be used OO-style. This wrapper holds altered versions of all the
- // underscore functions. Wrapped objects may be chained.
- var wrapper = function(obj) { this._wrapped = obj; };
- // Expose `wrapper.prototype` as `_.prototype`
- _.prototype = wrapper.prototype;
- // Helper function to continue chaining intermediate results.
- var result = function(obj, chain) {
- return chain ? _(obj).chain() : obj;
- };
- // A method to easily add functions to the OOP wrapper.
- var addToWrapper = function(name, func) {
- wrapper.prototype[name] = function() {
- var args = slice.call(arguments);
- unshift.call(args, this._wrapped);
- return result(func.apply(_, args), this._chain);
- };
- };
- // Add all of the Underscore functions to the wrapper object.
- _.mixin(_);
- // Add all mutator Array functions to the wrapper.
- each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
- var method = ArrayProto[name];
- wrapper.prototype[name] = function() {
- method.apply(this._wrapped, arguments);
- return result(this._wrapped, this._chain);
- };
- });
- // Add all accessor Array functions to the wrapper.
- each(['concat', 'join', 'slice'], function(name) {
- var method = ArrayProto[name];
- wrapper.prototype[name] = function() {
- return result(method.apply(this._wrapped, arguments), this._chain);
- };
- });
- // Start chaining a wrapped Underscore object.
- wrapper.prototype.chain = function() {
- this._chain = true;
- return this;
- };
- // Extracts the result from a wrapped and chained object.
- wrapper.prototype.value = function() {
- return this._wrapped;
- };
- })();
- // Backbone.js 0.5.3
- // (c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
- // Backbone may be freely distributed under the MIT license.
- // For all details and documentation:
- // http://documentcloud.github.com/backbone
- (function(){
- // Initial Setup
- // -------------
- // Save a reference to the global object.
- var root = this;
- // Save the previous value of the `Backbone` variable.
- var previousBackbone = root.Backbone;
- // The top-level namespace. All public Backbone classes and modules will
- // be attached to this. Exported for both CommonJS and the browser.
- var Backbone;
- if (typeof exports !== 'undefined') {
- Backbone = exports;
- } else {
- Backbone = root.Backbone = {};
- }
- // Current version of the library. Keep in sync with `package.json`.
- Backbone.VERSION = '0.5.3';
- // Require Underscore, if we're on the server, and it's not already present.
- var _ = root._;
- if (!_ && (typeof require !== 'undefined')) _ = require('underscore')._;
- // For Backbone's purposes, jQuery or Zepto owns the `$` variable.
- // Commented out, because jQuery is sometimes not defined at this point
- //var $ = root.jQuery || root.Zepto;
- // Runs Backbone.js in *noConflict* mode, returning the `Backbone` variable
- // to its previous owner. Returns a reference to this Backbone object.
- Backbone.noConflict = function() {
- root.Backbone = previousBackbone;
- return this;
- };
- // Turn on `emulateHTTP` to support legacy HTTP servers. Setting this option will
- // fake `"PUT"` and `"DELETE"` requests via the `_method` parameter and set a
- // `X-Http-Method-Override` header.
- Backbone.emulateHTTP = false;
- // Turn on `emulateJSON` to support legacy servers that can't deal with direct
- // `application/json` requests ... will encode the body as
- // `application/x-www-form-urlencoded` instead and will send the model in a
- // form param named `model`.
- Backbone.emulateJSON = false;
- // Backbone.Events
- // -----------------
- // A module that can be mixed in to *any object* in order to provide it with
- // custom events. You may `bind` or `unbind` a callback function to an event;
- // `trigger`-ing an event fires all callbacks in succession.
- //
- // var object = {};
- // _.extend(object, Backbone.Events);
- // object.bind('expand', function(){ alert('expanded'); });
- // object.trigger('expand');
- //
- Backbone.Events = {
- // Bind an event, specified by a string name, `ev`, to a `callback` function.
- // Passing `"all"` will bind the callback to all events fired.
- bind : function(ev, callback, context) {
- var calls = this._callbacks || (this._callbacks = {});
- var list = calls[ev] || (calls[ev] = []);
- list.push([callback, context]);
- return this;
- },
- // Remove one or many callbacks. If `callback` is null, removes all
- // callbacks for the event. If `ev` is null, removes all bound callbacks
- // for all events.
- unbind : function(ev, callback) {
- var calls;
- if (!ev) {
- this._callbacks = {};
- } else if (calls = this._callbacks) {
- if (!callback) {
- calls[ev] = [];
- } else {
- var list = calls[ev];
- if (!list) return this;
- for (var i = 0, l = list.length; i < l; i++) {
- if (list[i] && callback === list[i][0]) {
- list[i] = null;
- break;
- }
- }
- }
- }
- return this;
- },
- // Trigger an event, firing all bound callbacks. Callbacks are passed the
- // same arguments as `trigger` is, apart from the event name.
- // Listening for `"all"` passes the true event name as the first argument.
- trigger : function(eventName) {
- var list, calls, ev, callback, args;
- var both = 2;
- if (!(calls = this._callbacks)) return this;
- while (both--) {
- ev = both ? eventName : 'all';
- if (list = calls[ev]) {
- for (var i = 0, l = list.length; i < l; i++) {
- if (!(callback = list[i])) {
- list.splice(i, 1); i--; l--;
- } else {
- args = both ? Array.prototype.slice.call(arguments, 1) : arguments;
- callback[0].apply(callback[1] || this, args);
- }
- }
- }
- }
- return this;
- }
- };
- // Backbone.Model
- // --------------
- // Create a new model, with defined attributes. A client id (`cid`)
- // is automatically generated and assigned for you.
- Backbone.Model = function(attributes, options) {
- var defaults;
- attributes || (attributes = {});
- if (defaults = this.defaults) {
- if (_.isFunction(defaults)) defaults = defaults.call(this);
- attributes = _.extend({}, defaults, attributes);
- }
- this.attributes = {};
- this._escapedAttributes = {};
- this.cid = _.uniqueId('c');
- this.set(attributes, {silent : true});
- this._changed = false;
- this._previousAttributes = _.clone(this.attributes);
- if (options && options.collection) this.collection = options.collection;
- this.initialize(attributes, options);
- };
- // Attach all inheritable methods to the Model prototype.
- _.extend(Backbone.Model.prototype, Backbone.Events, {
- // A snapshot of the model's previous attributes, taken immediately
- // after the last `"change"` event was fired.
- _previousAttributes : null,
- // Has the item been changed since the last `"change"` event?
- _changed : false,
- // The default name for the JSON `id` attribute is `"id"`. MongoDB and
- // CouchDB users may want to set this to `"_id"`.
- idAttribute : 'id',
- // Initialize is an empty function by default. Override it with your own
- // initialization logic.
- initialize : function(){},
- // Return a copy of the model's `attributes` object.
- toJSON : function() {
- return _.clone(this.attributes);
- },
- // Get the value of an attribute.
- get : function(attr) {
- return this.attributes[attr];
- },
- // Get the HTML-escaped value of an attribute.
- escape : function(attr) {
- var html;
- if (html = this._escapedAttributes[attr]) return html;
- var val = this.attributes[attr];
- return this._escapedAttributes[attr] = escapeHTML(val == null ? '' : '' + val);
- },
- // Returns `true` if the attribute contains a value that is not null
- // or undefined.
- has : function(attr) {
- return this.attributes[attr] != null;
- },
- // Set a hash of model attributes on the object, firing `"change"` unless you
- // choose to silence it.
- set : function(attrs, options) {
- // Extract attributes and options.
- options || (options = {});
- if (!attrs) return this;
- if (attrs.attributes) attrs = attrs.attributes;
- var now = this.attributes, escaped = this._escapedAttributes;
- // Run validation.
- if (!options.silent && this.validate && !this._performValidation(attrs, options)) return false;
- // Check for changes of `id`.
- if (this.idAttribute in attrs) this.id = attrs[this.idAttribute];
- // We're about to start triggering change events.
- var alreadyChanging = this._changing;
- this._changing = true;
- // Update attributes.
- for (var attr in attrs) {
- var val = attrs[attr];
- if (!_.isEqual(now[attr], val)) {
- now[attr] = val;
- delete escaped[attr];
- this._changed = true;
- if (!options.silent) this.trigger('change:' + attr, this, val, options);
- }
- }
- // Fire the `"change"` event, if the model has been changed.
- if (!alreadyChanging && !options.silent && this._changed) this.change(options);
- this._changing = false;
- return this;
- },
- // Remove an attribute from the model, firing `"change"` unless you choose
- // to silence it. `unset` is a noop if the attribute doesn't exist.
- unset : function(attr, options) {
- if (!(attr in this.attributes)) return this;
- options || (options = {});
- var value = this.attributes[attr];
- // Run validation.
- var validObj = {};
- validObj[attr] = void 0;
- if (!options.silent && this.validate && !this._performValidation(validObj, options)) return false;
- // Remove the attribute.
- delete this.attributes[attr];
- delete this._escapedAttributes[attr];
- if (attr == this.idAttribute) delete this.id;
- this._changed = true;
- if (!options.silent) {
- this.trigger('change:' + attr, this, void 0, options);
- this.change(options);
- }
- return this;
- },
- // Clear all attributes on the model, firing `"change"` unless you choose
- // to silence it.
- clear : function(options) {
- options || (options = {});
- var attr;
- var old = this.attributes;
- // Run validation.
- var validObj = {};
- for (attr in old) validObj[attr] = void 0;
- if (!options.silent && this.validate && !this._performValidation(validObj, options)) return false;
- this.attributes = {};
- this._escapedAttributes = {};
- this._changed = true;
- if (!options.silent) {
- for (attr in old) {
- this.trigger('change:' + attr, this, void 0, options);
- }
- this.change(options);
- }
- return this;
- },
- // Fetch the model from the server. If the server's representation of the
- // model differs from its current attributes, they will be overriden,
- // triggering a `"change"` event.
- fetch : function(options) {
- options || (options = {});
- var model = this;
- var success = options.success;
- options.success = function(resp, status, xhr) {
- if (!model.set(model.parse(resp, xhr), options)) return false;
- if (success) success(model, resp);
- };
- options.error = wrapError(options.error, model, options);
- return (this.sync || Backbone.sync).call(this, 'read', this, options);
- },
- // Set a hash of model attributes, and sync the model to the server.
- // If the server returns an attributes hash that differs, the model's
- // state will be `set` again.
- save : function(attrs, options) {
- options || (options = {});
- if (attrs && !this.set(attrs, options)) return false;
- var model = this;
- var success = options.success;
- options.success = function(resp, status, xhr) {
- if (!model.set(model.parse(resp, xhr), options)) return false;
- if (success) success(model, resp, xhr);
- };
- options.error = wrapError(options.error, model, options);
- var method = this.isNew() ? 'create' : 'update';
- return (this.sync || Backbone.sync).call(this, method, this, options);
- },
- // Destroy this model on the server if it was already persisted. Upon success, the model is removed
- // from its collection, if it has one.
- destroy : function(options) {
- options || (options = {});
- if (this.isNew()) return this.trigger('destroy', this, this.collection, options);
- var model = this;
- var success = options.success;
- options.success = function(resp) {
- model.trigger('destroy', model, model.collection, options);
- if (success) success(model, resp);
- };
- options.error = wrapError(options.error, model, options);
- return (this.sync || Backbone.sync).call(this, 'delete', this, options);
- },
- // Default URL for the model's representation on the server -- if you're
- // using Backbone's restful methods, override this to change the endpoint
- // that will be called.
- url : function() {
- var base = getUrl(this.collection) || this.urlRoot || urlError();
- if (this.isNew()) return base;
- return base + (base.charAt(base.length - 1) == '/' ? '' : '/') + encodeURIComponent(this.id);
- },
- // **parse** converts a response into the hash of attributes to be `set` on
- // the model. The default implementation is just to pass the response along.
- parse : function(resp, xhr) {
- return resp;
- },
- // Create a new model with identical attributes to this one.
- clone : function() {
- return new this.constructor(this);
- },
- // A model is new if it has never been saved to the server, and lacks an id.
- isNew : function() {
- return this.id == null;
- },
- // Call this method to manually fire a `change` event for this model.
- // Calling this will cause all objects observing the model to update.
- change : function(options) {
- this.trigger('change', this, options);
- this._previousAttributes = _.clone(this.attributes);
- this._changed = false;
- },
- // Determine if the model has changed since the last `"change"` event.
- // If you specify an attribute name, determine if that attribute has changed.
- hasChanged : function(attr) {
- if (attr) return this._previousAttributes[attr] != this.attributes[attr];
- return this._changed;
- },
- // Return an object containing all the attributes that have changed, or false
- // if there are no changed attributes. Useful for determining what parts of a
- // view need to be updated and/or what attributes need to be persisted to
- // the server.
- changedAttributes : function(now) {
- now || (now = this.attributes);
- var old = this._previousAttributes;
- var changed = false;
- for (var attr in now) {
- if (!_.isEqual(old[attr], now[attr])) {
- changed = changed || {};
- changed[attr] = now[attr];
- }
- }
- return changed;
- },
- // Get the previous value of an attribute, recorded at the time the last
- // `"change"` event was fired.
- previous : function(attr) {
- if (!attr || !this._previousAttributes) return null;
- return this._previousAttributes[attr];
- },
- // Get all of the attributes of the model at the time of the previous
- // `"change"` event.
- previousAttributes : function() {
- return _.clone(this._previousAttributes);
- },
- // Run validation against a set of incoming attributes, returning `true`
- // if all is well. If a specific `error` callback has been passed,
- // call that instead of firing the general `"error"` event.
- _performValidation : function(attrs, options) {
- var error = this.validate(attrs);
- if (error) {
- if (options.error) {
- options.error(this, error, options);
- } else {
- this.trigger('error', this, error, options);
- }
- return false;
- }
- return true;
- }
- });
- // Backbone.Collection
- // -------------------
- // Provides a standard collection class for our sets of models, ordered
- // or unordered. If a `comparator` is specified, the Collection will maintain
- // its models in sort order, as they're added and removed.
- Backbone.Collection = function(models, options) {
- options || (options = {});
- if (options.comparator) this.comparator = options.comparator;
- _.bindAll(this, '_onModelEvent', '_removeReference');
- this._reset();
- if (models) this.reset(models, {silent: true});
- this.initialize.apply(this, arguments);
- };
- // Define the Collection's inheritable methods.
- _.extend(Backbone.Collection.prototype, Backbone.Events, {
- // The default model for a collection is just a **Backbone.Model**.
- // This should be overridden in most cases.
- model : Backbone.Model,
- // Initialize is an empty function by default. Override it with your own
- // initialization logic.
- initialize : function(){},
- // The JSON representation of a Collection is an array of the
- // models' attributes.
- toJSON : function() {
- return this.map(function(model){ return model.toJSON(); });
- },
- // Add a model, or list of models to the set. Pass **silent** to avoid
- // firing the `added` event for every new model.
- add : function(models, options) {
- if (_.isArray(models)) {
- for (var i = 0, l = models.length; i < l; i++) {
- this._add(models[i], options);
- }
- } else {
- this._add(models, options);
- }
- return this;
- },
- // Remove a model, or a list of models from the set. Pass silent to avoid
- // firing the `removed` event for every model removed.
- remove : function(models, options) {
- if (_.isArray(models)) {
- for (var i = 0, l = models.length; i < l; i++) {
- this._remove(models[i], options);
- }
- } else {
- this._remove(models, options);
- }
- return this;
- },
- // Get a model from the set by id.
- get : function(id) {
- if (id == null) return null;
- return this._byId[id.id != null ? id.id : id];
- },
- // Get a model from the set by client id.
- getByCid : function(cid) {
- return cid && this._byCid[cid.cid || cid];
- },
- // Get the model at the given index.
- at: function(index) {
- return this.models[index];
- },
- // Force the collection to re-sort itself. You don't need to call this under normal
- // circumstances, as the set will maintain sort order as each item is added.
- sort : function(options) {
- options || (options = {});
- if (!this.comparator) throw new Error('Cannot sort a set without a comparator');
- this.models = this.sortBy(this.comparator);
- if (!options.silent) this.trigger('reset', this, options);
- return this;
- },
- // Pluck an attribute from each model in the collection.
- pluck : function(attr) {
- return _.map(this.models, function(model){ return model.get(attr); });
- },
- // When you have more items than you want to add or remove individually,
- // you can reset the entire set with a new list of models, without firing
- // any `added` or `removed` events. Fires `reset` when finished.
- reset : function(models, options) {
- models || (models = []);
- options || (options = {});
- this.each(this._removeReference);
- this._reset();
- this.add(models, {silent: true});
- if (!options.silent) this.trigger('reset', this, options);
- return this;
- },
- // Fetch the default set of models for this collection, resetting the
- // collection when they arrive. If `add: true` is passed, appends the
- // models to the collection instead of resetting.
- fetch : function(options) {
- options || (options = {});
- var collection = this;
- var success = options.success;
- options.success = function(resp, status, xhr) {
- collection[options.add ? 'add' : 'reset'](collection.parse(resp, xhr), options);
- if (success) success(collection, resp);
- };
- options.error = wrapError(options.error, collection, options);
- return (this.sync || Backbone.sync).call(this, 'read', this, options);
- },
- // Create a new instance of a model in this collection. After the model
- // has been created on the server, it will be added to the collection.
- // Returns the model, or 'false' if validation on a new model fails.
- create : function(model, options) {
- var coll = this;
- options || (options = {});
- model = this._prepareModel(model, options);
- if (!model) return false;
- var success = options.success;
- options.success = function(nextModel, resp, xhr) {
- coll.add(nextModel, options);
- if (success) success(nextModel, resp, xhr);
- };
- model.save(null, options);
- return model;
- },
- // **parse** converts a response into a list of models to be added to the
- // collection. The default implementation is just to pass it through.
- parse : function(resp, xhr) {
- return resp;
- },
- // Proxy to _'s chain. Can't be proxied the same way the rest of the
- // underscore methods are proxied because it relies on the underscore
- // constructor.
- chain: function () {
- return _(this.models).chain();
- },
- // Reset all internal state. Called when the collection is reset.
- _reset : function(options) {
- this.length = 0;
- this.models = [];
- this._byId = {};
- this._byCid = {};
- },
- // Prepare a model to be added to this collection
- _prepareModel: function(model, options) {
- if (!(model instanceof Backbone.Model)) {
- var attrs = model;
- model = new this.model(attrs, {collection: this});
- if (model.validate && !model._performValidation(attrs, options)) model = false;
- } else if (!model.collection) {
- model.collection = this;
- }
- return model;
- },
- // Internal implementation of adding a single model to the set, updating
- // hash indexes for `id` and `cid` lookups.
- // Returns the model, or 'false' if validation on a new model fails.
- _add : function(model, options) {
- options |…
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