--- /dev/null
+/*
+ * jsPlumb
+ *
+ * Title:jsPlumb 1.5.5
+ *
+ * Provides a way to visually connect elements on an HTML page, using either SVG or VML.
+ *
+ * This file contains the util functions
+ *
+ * Copyright (c) 2010 - 2013 Simon Porritt (http://jsplumb.org)
+ *
+ * http://jsplumb.org
+ * http://github.com/sporritt/jsplumb
+ * http://code.google.com/p/jsplumb
+ *
+ * Dual licensed under the MIT and GPL2 licenses.
+ */
+
+;(function() {
+
+ var _isa = function(a) { return Object.prototype.toString.call(a) === "[object Array]"; },
+ _isnum = function(n) { return Object.prototype.toString.call(n) === "[object Number]"; },
+ _iss = function(s) { return typeof s === "string"; },
+ _isb = function(s) { return typeof s === "boolean"; },
+ _isnull = function(s) { return s == null; },
+ _iso = function(o) { return o == null ? false : Object.prototype.toString.call(o) === "[object Object]"; },
+ _isd = function(o) { return Object.prototype.toString.call(o) === "[object Date]"; },
+ _isf = function(o) { return Object.prototype.toString.call(o) === "[object Function]"; },
+ _ise = function(o) {
+ for (var i in o) { if (o.hasOwnProperty(i)) return false; }
+ return true;
+ },
+ pointHelper = function(p1, p2, fn) {
+ p1 = _isa(p1) ? p1 : [p1.x, p1.y];
+ p2 = _isa(p2) ? p2 : [p2.x, p2.y];
+ return fn(p1, p2);
+ };
+
+ jsPlumbUtil = {
+ isArray : _isa,
+ isString : _iss,
+ isBoolean: _isb,
+ isNull : _isnull,
+ isObject : _iso,
+ isDate : _isd,
+ isFunction: _isf,
+ isEmpty:_ise,
+ isNumber:_isnum,
+ clone : function(a) {
+ if (_iss(a)) return "" + a;
+ else if (_isb(a)) return !!a;
+ else if (_isd(a)) return new Date(a.getTime());
+ else if (_isf(a)) return a;
+ else if (_isa(a)) {
+ var b = [];
+ for (var i = 0; i < a.length; i++)
+ b.push(this.clone(a[i]));
+ return b;
+ }
+ else if (_iso(a)) {
+ var c = {};
+ for (var j in a)
+ c[j] = this.clone(a[j]);
+ return c;
+ }
+ else return a;
+ },
+ merge : function(a, b) {
+ var c = this.clone(a);
+ for (var i in b) {
+ if (c[i] == null || _iss(b[i]) || _isb(b[i]))
+ c[i] = b[i];
+ else {
+ if (_isa(b[i])/* && this.isArray(c[i])*/) {
+ var ar = [];
+ // if c's object is also an array we can keep its values.
+ if (_isa(c[i])) ar.push.apply(ar, c[i]);
+ ar.push.apply(ar, b[i]);
+ c[i] = ar;
+ }
+ else if(_iso(b[i])) {
+ // overwite c's value with an object if it is not already one.
+ if (!_iso(c[i]))
+ c[i] = {};
+ for (var j in b[i])
+ c[i][j] = b[i][j];
+ }
+ }
+ }
+ return c;
+ },
+ copyValues:function(names, from, to) {
+ for (var i = 0; i < names.length; i++)
+ to[names[i]] = from[names[i]];
+ },
+ //
+ // chain a list of functions, supplied by [ object, method name, args ], and return on the first
+ // one that returns the failValue. if none return the failValue, return the successValue.
+ //
+ functionChain : function(successValue, failValue, fns) {
+ for (var i = 0; i < fns.length; i++) {
+ var o = fns[i][0][fns[i][1]].apply(fns[i][0], fns[i][2]);
+ if (o === failValue) {
+ return o;
+ }
+ }
+ return successValue;
+ },
+ // take the given model and expand out any parameters.
+ populate : function(model, values) {
+ // for a string, see if it has parameter matches, and if so, try to make the substitutions.
+ var getValue = function(fromString) {
+ var matches = fromString.match(/(\${.*?})/g);
+ if (matches != null) {
+ for (var i = 0; i < matches.length; i++) {
+ var val = values[matches[i].substring(2, matches[i].length - 1)];
+ if (val != null) {
+ fromString = fromString.replace(matches[i], val);
+ }
+ }
+ }
+ return fromString;
+ },
+ // process one entry.
+ _one = function(d) {
+ if (d != null) {
+ if (_iss(d)) {
+ return getValue(d);
+ }
+ else if (_isa(d)) {
+ var r = [];
+ for (var i = 0; i < d.length; i++)
+ r.push(_one(d[i]));
+ return r;
+ }
+ else if (_iso(d)) {
+ var s = {};
+ for (var j in d) {
+ s[j] = _one(d[j]);
+ }
+ return s;
+ }
+ else {
+ return d;
+ }
+ }
+ };
+
+ return _one(model);
+ },
+ convertStyle : function(s, ignoreAlpha) {
+ // TODO: jsPlumb should support a separate 'opacity' style member.
+ if ("transparent" === s) return s;
+ var o = s,
+ pad = function(n) { return n.length == 1 ? "0" + n : n; },
+ hex = function(k) { return pad(Number(k).toString(16)); },
+ pattern = /(rgb[a]?\()(.*)(\))/;
+ if (s.match(pattern)) {
+ var parts = s.match(pattern)[2].split(",");
+ o = "#" + hex(parts[0]) + hex(parts[1]) + hex(parts[2]);
+ if (!ignoreAlpha && parts.length == 4)
+ o = o + hex(parts[3]);
+ }
+ return o;
+ },
+ findWithFunction : function(a, f) {
+ if (a)
+ for (var i = 0; i < a.length; i++) if (f(a[i])) return i;
+ return -1;
+ },
+ clampToGrid : function(x, y, grid, dontClampX, dontClampY) {
+ var _gridClamp = function(n, g) {
+ var e = n % g,
+ f = Math.floor(n / g),
+ inc = e >= (g / 2) ? 1 : 0;
+ return (f + inc) * g;
+ };
+ return [
+ dontClampX || grid == null ? x : _gridClamp(x, grid[0]),
+ dontClampY || grid == null ? y : _gridClamp(y, grid[1])
+ ];
+ },
+ indexOf : function(l, v) {
+ return jsPlumbUtil.findWithFunction(l, function(_v) { return _v == v; });
+ },
+ removeWithFunction : function(a, f) {
+ var idx = jsPlumbUtil.findWithFunction(a, f);
+ if (idx > -1) a.splice(idx, 1);
+ return idx != -1;
+ },
+ remove : function(l, v) {
+ var idx = jsPlumbUtil.indexOf(l, v);
+ if (idx > -1) l.splice(idx, 1);
+ return idx != -1;
+ },
+ // TODO support insert index
+ addWithFunction : function(list, item, hashFunction) {
+ if (jsPlumbUtil.findWithFunction(list, hashFunction) == -1) list.push(item);
+ },
+ addToList : function(map, key, value, insertAtStart) {
+ var l = map[key];
+ if (l == null) {
+ l = [];
+ map[key] = l;
+ }
+ l[insertAtStart ? "unshift" : "push"](value);
+ return l;
+ },
+ //
+ // extends the given obj (which can be an array) with the given constructor function, prototype functions, and
+ // class members, any of which may be null.
+ //
+ extend : function(child, parent, _protoFn, _protoAtts) {
+ _protoFn = _protoFn || {};
+ _protoAtts = _protoAtts || {};
+ parent = _isa(parent) ? parent : [ parent ];
+
+ for (var i = 0; i < parent.length; i++) {
+ for (var j in parent[i].prototype) {
+ if(parent[i].prototype.hasOwnProperty(j)) {
+ child.prototype[j] = parent[i].prototype[j];
+ }
+ }
+ }
+
+ var _makeFn = function(name) {
+ return function() {
+ for (var i = 0; i < parent.length; i++) {
+ if (parent[i].prototype[name])
+ parent[i].prototype[name].apply(this, arguments);
+ }
+ return _protoFn[name].apply(this, arguments);
+ };
+ };
+
+ for (var k in _protoFn) {
+ child.prototype[k] = _makeFn(k);
+ }
+
+ return child;
+ },
+ uuid : function() {
+ return ('xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
+ var r = Math.random()*16|0, v = c == 'x' ? r : (r&0x3|0x8);
+ return v.toString(16);
+ }));
+ },
+ logEnabled : true,
+ log : function() {
+ if (jsPlumbUtil.logEnabled && typeof console != "undefined") {
+ try {
+ var msg = arguments[arguments.length - 1];
+ console.log(msg);
+ }
+ catch (e) {}
+ }
+ },
+ group : function(g) { if (jsPlumbUtil.logEnabled && typeof console != "undefined") console.group(g); },
+ groupEnd : function(g) { if (jsPlumbUtil.logEnabled && typeof console != "undefined") console.groupEnd(g); },
+ time : function(t) { if (jsPlumbUtil.logEnabled && typeof console != "undefined") console.time(t); },
+ timeEnd : function(t) { if (jsPlumbUtil.logEnabled && typeof console != "undefined") console.timeEnd(t); },
+
+ /**
+ * helper to remove an element from the DOM.
+ */
+ removeElement : function(element) {
+ if (element != null && element.parentNode != null) {
+ element.parentNode.removeChild(element);
+ }
+ },
+ /**
+ * helper to remove a list of elements from the DOM.
+ */
+ removeElements : function(elements) {
+ for ( var i = 0; i < elements.length; i++)
+ jsPlumbUtil.removeElement(elements[i]);
+ },
+ /*
+ * Function: sizeElement
+ * Helper to size and position an element. You would typically use
+ * this when writing your own Connector or Endpoint implementation.
+ *
+ * Parameters:
+ * x - [int] x position for the element origin
+ * y - [int] y position for the element origin
+ * w - [int] width of the element
+ * h - [int] height of the element
+ *
+ */
+ sizeElement : function(el, x, y, w, h) {
+ if (el) {
+ el.style.height = h + "px";
+ el.height = h;
+ el.style.width = w + "px";
+ el.width = w;
+ el.style.left = x + "px";
+ el.style.top = y + "px";
+ }
+ },
+ /**
+ * @name jsPlumbUtil.wrap
+ * @desc Wraps one function with another, creating a placeholder for the
+ * wrapped function if it was null. this is used to wrap the various
+ * drag/drop event functions - to allow jsPlumb to be notified of
+ * important lifecycle events without imposing itself on the user's
+ * drag/drop functionality.
+ * @param {Function} wrappedFunction original function to wrap; may be null.
+ * @param {Function} newFunction function to wrap the original with.
+ * @param {Object} [returnOnThisValue] Optional. Indicates that the wrappedFunction should
+ * not be executed if the newFunction returns a value matching 'returnOnThisValue'.
+ * note that this is a simple comparison and only works for primitives right now.
+ */
+ wrap : function(wrappedFunction, newFunction, returnOnThisValue) {
+ wrappedFunction = wrappedFunction || function() { };
+ newFunction = newFunction || function() { };
+ return function() {
+ var r = null;
+ try {
+ r = newFunction.apply(this, arguments);
+ } catch (e) {
+ jsPlumbUtil.log("jsPlumb function failed : " + e);
+ }
+ if (returnOnThisValue == null || (r !== returnOnThisValue)) {
+ try {
+ r = wrappedFunction.apply(this, arguments);
+ } catch (e) {
+ jsPlumbUtil.log("wrapped function failed : " + e);
+ }
+ }
+ return r;
+ };
+ }
+ };
+
+
+ jsPlumbUtil.EventGenerator = function() {
+ var _listeners = {}, eventsSuspended = false;
+
+ // this is a list of events that should re-throw any errors that occur during their dispatch. as of 1.3.0 this is private to
+ // jsPlumb, but it seems feasible that people might want to manipulate this list. the thinking is that we don't want event
+ // listeners to bring down jsPlumb - or do we. i can't make up my mind about this, but i know i want to hear about it if the "ready"
+ // event fails, because then my page has most likely not initialised. so i have this halfway-house solution. it will be interesting
+ // to hear what other people think.
+ var eventsToDieOn = [ "ready" ];
+
+ this.bind = function(event, listener, insertAtStart) {
+ jsPlumbUtil.addToList(_listeners, event, listener, insertAtStart);
+ return this;
+ };
+
+ this.fire = function(event, value, originalEvent) {
+ if (!eventsSuspended && _listeners[event]) {
+ // instead of looping through the array we get a counter and a length, because it is possible
+ // that an event fired from here could cause the object to get cleaned up, which would throw
+ // away the listeners. so after each cycle through the loop we check to ensure we haven't
+ // been nuked.
+ var l = _listeners[event].length, i = 0, _gone = false, ret = null;
+ if (!this.shouldFireEvent || this.shouldFireEvent(event, value, originalEvent)) {
+ while (!_gone && i < l && ret !== false) {
+
+ // doing it this way rather than catching and then possibly re-throwing means that an error propagated by this
+ // method will have the whole call stack available in the debugger.
+ if (jsPlumbUtil.findWithFunction(eventsToDieOn, function(e) { return e === event; }) != -1)
+ _listeners[event][i](value, originalEvent);
+ else {
+ // for events we don't want to die on, catch and log.
+ try {
+ ret = _listeners[event][i](value, originalEvent);
+ } catch (e) {
+ jsPlumbUtil.log("jsPlumb: fire failed for event " + event + " : " + e);
+ }
+ }
+ i++;
+ if (_listeners == null || _listeners[event] == null) _gone = true;
+ }
+ }
+ }
+ return this;
+ };
+
+ this.unbind = function(event) {
+ if (event)
+ delete _listeners[event];
+ else {
+ _listeners = {};
+ }
+ return this;
+ };
+
+ this.getListener = function(forEvent) {
+ return _listeners[forEvent];
+ };
+ this.setSuspendEvents = function(val) {
+ eventsSuspended = val;
+ };
+ this.isSuspendEvents = function() {
+ return eventsSuspended;
+ };
+ this.cleanupListeners = function() {
+ for (var i in _listeners) {
+ _listeners[i].splice(0);
+ delete _listeners[i];
+ }
+ };
+ };
+
+
+ jsPlumbUtil.EventGenerator.prototype = {
+ cleanup:function() {
+ this.cleanupListeners();
+ }
+ };
+
+
+ // thanks MDC
+ // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/bind?redirectlocale=en-US&redirectslug=JavaScript%2FReference%2FGlobal_Objects%2FFunction%2Fbind
+ if (!Function.prototype.bind) {
+ Function.prototype.bind = function (oThis) {
+ if (typeof this !== "function") {
+ // closest thing possible to the ECMAScript 5 internal IsCallable function
+ throw new TypeError("Function.prototype.bind - what is trying to be bound is not callable");
+ }
+
+ var aArgs = Array.prototype.slice.call(arguments, 1),
+ fToBind = this,
+ fNOP = function () {},
+ fBound = function () {
+ return fToBind.apply(this instanceof fNOP && oThis ? this : oThis,
+ aArgs.concat(Array.prototype.slice.call(arguments)));
+ };
+
+ fNOP.prototype = this.prototype;
+ fBound.prototype = new fNOP();
+
+ return fBound;
+ };
+ }
+
+})();
\ No newline at end of file
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