# Code coverage report for ./src/ocLazyLoad.core.js

## Statements: 76.38% (262 / 343) Branches: 58.65% (139 / 237) Functions: 79.31% (46 / 58) Lines: 76.38% (262 / 343) Ignored: none

All files » ./src/ » ocLazyLoad.core.js

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     'use strict';

    (function (angular, window) {
        'use strict';

        var regModules = ['ng', 'oc.lazyLoad'],
            regInvokes = {},
            regConfigs = [],
            modulesToLoad = [],
            // modules to load from angular.module or other sources
        realModules = [],
            // real modules called from angular.module
        recordDeclarations = [],
            broadcast = angular.noop,
            runBlocks = {},
            justLoaded = [];

        var ocLazyLoad = angular.module('oc.lazyLoad', ['ng']);

        ocLazyLoad.provider('$ocLazyLoad', function ($controllerProvider, $provide, $compileProvider, $filterProvider, $injector, $animateProvider) {
            var modules = {},
                providers = {
                $controllerProvider: $controllerProvider,
                $compileProvider: $compileProvider,
                $filterProvider: $filterProvider,
                $provide: $provide, // other things (constant, decorator, provider, factory, service)
                $injector: $injector,
                $animateProvider: $animateProvider
            },
                debug = false,
                events = false,
                moduleCache = [],
                modulePromises = {};

            moduleCache.push = function (value) {
                if (this.indexOf(value) === -1) {
                    Array.prototype.push.apply(this, arguments);
                }
            };

            this.config = function (config) {
                // If we want to define modules configs
                Eif (angular.isDefined(config.modules)) {
                    Eif (angular.isArray(config.modules)) {
                        angular.forEach(config.modules, function (moduleConfig) {
                            modules[moduleConfig.name] = moduleConfig;
                        });
                    } else {
                        modules[config.modules.name] = config.modules;
                    }
                }

                Iif (angular.isDefined(config.debug)) {
                    debug = config.debug;
                }

                Iif (angular.isDefined(config.events)) {
                    events = config.events;
                }
            };

            /**
             * Get the list of existing registered modules
             * @param element
             */
            this._init = function _init(element) {
                // this is probably useless now because we override angular.bootstrap
                if (modulesToLoad.length === 0) {
                    var elements = [element],
                        names = ['ng:app', 'ng-app', 'x-ng-app', 'data-ng-app'],
                        NG_APP_CLASS_REGEXP = /\sng[:\-]app(:\s*([\w\d_]+);?)?\s/,
                        append = function append(elm) {
                        return elm && elements.push(elm);
                    };

                    angular.forEach(names, function (name) {
                        names[name] = true;
                        append(document.getElementById(name));
                        name = name.replace(':', '\\:');
                        Eif (typeof element[0] !== 'undefined' && element[0].querySelectorAll) {
                            angular.forEach(element[0].querySelectorAll('.' + name), append);
                            angular.forEach(element[0].querySelectorAll('.' + name + '\\:'), append);
                            angular.forEach(element[0].querySelectorAll('[' + name + ']'), append);
                        }
                    });

                    angular.forEach(elements, function (elm) {
                        Eif (modulesToLoad.length === 0) {
                            var className = ' ' + element.className + ' ';
                            var match = NG_APP_CLASS_REGEXP.exec(className);
                            Iif (match) {
                                modulesToLoad.push((match[2] || '').replace(/\s+/g, ','));
                            } else {
                                angular.forEach(elm.attributes, function (attr) {
                                    if (modulesToLoad.length === 0 && names[attr.name]) {
                                        modulesToLoad.push(attr.value);
                                    }
                                });
                            }
                        }
                    });
                }

                Iif (modulesToLoad.length === 0 && !((window.jasmine || window.mocha) && angular.isDefined(angular.mock))) {
                    console.error('No module found during bootstrap, unable to init ocLazyLoad. You should always use the ng-app directive or angular.boostrap when you use ocLazyLoad.');
                }

                var addReg = function addReg(moduleName) {
                    if (regModules.indexOf(moduleName) === -1) {
                        // register existing modules
                        regModules.push(moduleName);
                        var mainModule = angular.module(moduleName);

                        // register existing components (directives, services, ...)
                        _invokeQueue(null, mainModule._invokeQueue, moduleName);
                        _invokeQueue(null, mainModule._configBlocks, moduleName); // angular 1.3+

                        angular.forEach(mainModule.requires, addReg);
                    }
                };

                angular.forEach(modulesToLoad, function (moduleName) {
                    addReg(moduleName);
                });

                modulesToLoad = []; // reset for next bootstrap
                recordDeclarations.pop(); // wait for the next lazy load
            };

            /**
             * Like JSON.stringify but that doesn't throw on circular references
             * @param obj
             */
            var stringify = function stringify(obj) {
                try {
                    return JSON.stringify(obj);
                } catch (e) {
                    var cache = [];
                    return JSON.stringify(obj, function (key, value) {
                        if (angular.isObject(value) && value !== null) {
                            if (cache.indexOf(value) !== -1) {
                                // Circular reference found, discard key
                                return;
                            }
                            // Store value in our collection
                            cache.push(value);
                        }
                        return value;
                    });
                }
            };

            var hashCode = function hashCode(str) {
                var hash = 0,
                    i,
                    chr,
                    len;
                Iif (str.length == 0) {
                    return hash;
                }
                for (i = 0, len = str.length; i < len; i++) {
                    chr = str.charCodeAt(i);
                    hash = (hash << 5) - hash + chr;
                    hash |= 0; // Convert to 32bit integer
                }
                return hash;
            };

            function _register(providers, registerModules, params) {
                Eif (registerModules) {
                    var k,
                        moduleName,
                        moduleFn,
                        tempRunBlocks = [];
                    for (k = registerModules.length - 1; k >= 0; k--) {
                        moduleName = registerModules[k];
                        Iif (!angular.isString(moduleName)) {
                            moduleName = getModuleName(moduleName);
                        }
                        if (!moduleName || justLoaded.indexOf(moduleName) !== -1 || modules[moduleName] && realModules.indexOf(moduleName) === -1) {
                            continue;
                        }
                        // new if not registered
                        var newModule = regModules.indexOf(moduleName) === -1;
                        moduleFn = ngModuleFct(moduleName);
                        if (newModule) {
                            regModules.push(moduleName);
                            _register(providers, moduleFn.requires, params);
                        }
                        if (moduleFn._runBlocks.length > 0) {
                            // new run blocks detected! Replace the old ones (if existing)
                            runBlocks[moduleName] = [];
                            while (moduleFn._runBlocks.length > 0) {
                                runBlocks[moduleName].push(moduleFn._runBlocks.shift());
                            }
                        }
                        if (angular.isDefined(runBlocks[moduleName]) && (newModule || params.rerun)) {
                            tempRunBlocks = tempRunBlocks.concat(runBlocks[moduleName]);
                        }
                        _invokeQueue(providers, moduleFn._invokeQueue, moduleName, params.reconfig);
                        _invokeQueue(providers, moduleFn._configBlocks, moduleName, params.reconfig); // angular 1.3+
                        broadcast(newModule ? 'ocLazyLoad.moduleLoaded' : 'ocLazyLoad.moduleReloaded', moduleName);
                        registerModules.pop();
                        justLoaded.push(moduleName);
                    }
                    // execute the run blocks at the end
                    var instanceInjector = providers.getInstanceInjector();
                    angular.forEach(tempRunBlocks, function (fn) {
                        instanceInjector.invoke(fn);
                    });
                }
            }

            function _registerInvokeList(args, moduleName) {
                var invokeList = args[2][0],
                    type = args[1],
                    newInvoke = false;
                if (angular.isUndefined(regInvokes[moduleName])) {
                    regInvokes[moduleName] = {};
                }
                if (angular.isUndefined(regInvokes[moduleName][type])) {
                    regInvokes[moduleName][type] = {};
                }
                var onInvoke = function onInvoke(invokeName, invoke) {
                    if (!regInvokes[moduleName][type].hasOwnProperty(invokeName)) {
                        regInvokes[moduleName][type][invokeName] = [];
                    }
                    if (checkHashes(invoke, regInvokes[moduleName][type][invokeName])) {
                        newInvoke = true;
                        regInvokes[moduleName][type][invokeName].push(invoke);
                        broadcast('ocLazyLoad.componentLoaded', [moduleName, type, invokeName]);
                    }
                };

                function checkHashes(potentialNew, invokes) {
                    var isNew = true,
                        newHash;
                    if (invokes.length) {
                        newHash = signature(potentialNew);
                        angular.forEach(invokes, function (invoke) {
                            isNew = isNew && signature(invoke) !== newHash;
                        });
                    }
                    return isNew;
                }

                function signature(data) {
                    Iif (angular.isArray(data)) {
                        // arrays are objects, we need to test for it first
                        return hashCode(data.toString());
                    } else Iif (angular.isObject(data)) {
                        // constants & values for example
                        return hashCode(stringify(data));
                    } else {
                        Eif (angular.isDefined(data) && data !== null) {
                            return hashCode(data.toString());
                        } else {
                            // null & undefined constants
                            return data;
                        }
                    }
                }

                if (angular.isString(invokeList)) {
                    onInvoke(invokeList, args[2][1]);
                } else if (angular.isObject(invokeList)) {
                    angular.forEach(invokeList, function (invoke, key) {
                        if (angular.isString(invoke)) {
                            // decorators for example
                            onInvoke(invoke, invokeList[1]);
                        } else {
                            // components registered as object lists {"componentName": function() {}}
                            onInvoke(key, invoke);
                        }
                    });
                } else {
                    return false;
                }
                return newInvoke;
            }

            function _invokeQueue(providers, queue, moduleName, reconfig) {
                Iif (!queue) {
                    return;
                }

                var i, len, args, provider;
                for (i = 0, len = queue.length; i < len; i++) {
                    args = queue[i];
                    Eif (angular.isArray(args)) {
                        if (providers !== null) {
                            Eif (providers.hasOwnProperty(args[0])) {
                                provider = providers[args[0]];
                            } else {
                                throw new Error('unsupported provider ' + args[0]);
                            }
                        }
                        var isNew = _registerInvokeList(args, moduleName);
                        if (args[1] !== 'invoke') {
                            if (isNew && angular.isDefined(provider)) {
                                provider[args[1]].apply(provider, args[2]);
                            }
                        } else {
                            // config block
                            var callInvoke = function callInvoke(fct) {
                                var invoked = regConfigs.indexOf(moduleName + '-' + fct);
                                Eif (invoked === -1 || reconfig) {
                                    Eif (invoked === -1) {
                                        regConfigs.push(moduleName + '-' + fct);
                                    }
                                    if (angular.isDefined(provider)) {
                                        provider[args[1]].apply(provider, args[2]);
                                    }
                                }
                            };
                            if (angular.isFunction(args[2][0])) {
                                callInvoke(args[2][0]);
                            } else Eif (angular.isArray(args[2][0])) {
                                for (var j = 0, jlen = args[2][0].length; j < jlen; j++) {
                                    if (angular.isFunction(args[2][0][j])) {
                                        callInvoke(args[2][0][j]);
                                    }
                                }
                            }
                        }
                    }
                }
            }

            function getModuleName(module) {
                var moduleName = null;
                Eif (angular.isString(module)) {
                    moduleName = module;
                } else if (angular.isObject(module) && module.hasOwnProperty('name') && angular.isString(module.name)) {
                    moduleName = module.name;
                }
                return moduleName;
            }

            function moduleExists(moduleName) {
                Iif (!angular.isString(moduleName)) {
                    return false;
                }
                try {
                    return ngModuleFct(moduleName);
                } catch (e) {
                    Eif (/No module/.test(e) || e.message.indexOf('$injector:nomod') > -1) {
                        return false;
                    }
                }
            }

            this.$get = function ($log, $rootElement, $rootScope, $cacheFactory, $q) {
                var instanceInjector,
                    filesCache = $cacheFactory('ocLazyLoad');

                Eif (!debug) {
                    $log = {};
                    $log['error'] = angular.noop;
                    $log['warn'] = angular.noop;
                    $log['info'] = angular.noop;
                }

                // Make this lazy because when $get() is called the instance injector hasn't been assigned to the rootElement yet
                providers.getInstanceInjector = function () {
                    return instanceInjector ? instanceInjector : instanceInjector = $rootElement.data('$injector') || angular.injector();
                };

                broadcast = function broadcast(eventName, params) {
                    Iif (events) {
                        $rootScope.$broadcast(eventName, params);
                    }
                    Iif (debug) {
                        $log.info(eventName, params);
                    }
                };

                function reject(e) {
                    var deferred = $q.defer();
                    $log.error(e.message);
                    deferred.reject(e);
                    return deferred.promise;
                }

                return {
                    _broadcast: broadcast,

                    _$log: $log,

                    /**
                     * Returns the files cache used by the loaders to store the files currently loading
                     * @returns {*}
                     */
                    _getFilesCache: function getFilesCache() {
                        return filesCache;
                    },

                    /**
                     * Let the service know that it should monitor angular.module because files are loading
                     * @param watch boolean
                     */
                    toggleWatch: function toggleWatch(watch) {
                        if (watch) {
                            recordDeclarations.push(true);
                        } else {
                            recordDeclarations.pop();
                        }
                    },

                    /**
                     * Let you get a module config object
                     * @param moduleName String the name of the module
                     * @returns {*}
                     */
                    getModuleConfig: function getModuleConfig(moduleName) {
                        if (!angular.isString(moduleName)) {
                            throw new Error('You need to give the name of the module to get');
                        }
                        if (!modules[moduleName]) {
                            return null;
                        }
                        return angular.copy(modules[moduleName]);
                    },

                    /**
                     * Let you define a module config object
                     * @param moduleConfig Object the module config object
                     * @returns {*}
                     */
                    setModuleConfig: function setModuleConfig(moduleConfig) {
                        if (!angular.isObject(moduleConfig)) {
                            throw new Error('You need to give the module config object to set');
                        }
                        modules[moduleConfig.name] = moduleConfig;
                        return moduleConfig;
                    },

                    /**
                     * Returns the list of loaded modules
                     * @returns {string[]}
                     */
                    getModules: function getModules() {
                        return regModules;
                    },

                    /**
                     * Let you check if a module has been loaded into Angular or not
                     * @param modulesNames String/Object a module name, or a list of module names
                     * @returns {boolean}
                     */
                    isLoaded: function isLoaded(modulesNames) {
                        var moduleLoaded = function moduleLoaded(module) {
                            var isLoaded = regModules.indexOf(module) > -1;
                            if (!isLoaded) {
                                isLoaded = !!moduleExists(module);
                            }
                            return isLoaded;
                        };
                        if (angular.isString(modulesNames)) {
                            modulesNames = [modulesNames];
                        }
                        if (angular.isArray(modulesNames)) {
                            var i, len;
                            for (i = 0, len = modulesNames.length; i < len; i++) {
                                if (!moduleLoaded(modulesNames[i])) {
                                    return false;
                                }
                            }
                            return true;
                        } else {
                            throw new Error('You need to define the module(s) name(s)');
                        }
                    },

                    /**
                     * Given a module, return its name
                     * @param module
                     * @returns {String}
                     */
                    _getModuleName: getModuleName,

                    /**
                     * Returns a module if it exists
                     * @param moduleName
                     * @returns {module}
                     */
                    _getModule: function getModule(moduleName) {
                        try {
                            return ngModuleFct(moduleName);
                        } catch (e) {
                            // this error message really suxx
                            if (/No module/.test(e) || e.message.indexOf('$injector:nomod') > -1) {
                                e.message = 'The module "' + stringify(moduleName) + '" that you are trying to load does not exist. ' + e.message;
                            }
                            throw e;
                        }
                    },

                    /**
                     * Check if a module exists and returns it if it does
                     * @param moduleName
                     * @returns {boolean}
                     */
                    moduleExists: moduleExists,

                    /**
                     * Load the dependencies, and might try to load new files depending on the config
                     * @param moduleName (String or Array of Strings)
                     * @param localParams
                     * @returns {*}
                     * @private
                     */
                    _loadDependencies: function _loadDependencies(moduleName, localParams) {
                        var loadedModule,
                            requires,
                            diff,
                            promisesList = [],
                            self = this;

                        moduleName = self._getModuleName(moduleName);

                        Iif (moduleName === null) {
                            return $q.when();
                        } else {
                            try {
                                loadedModule = self._getModule(moduleName);
                            } catch (e) {
                                return reject(e);
                            }
                            // get unloaded requires
                            requires = self.getRequires(loadedModule);
                        }

                        angular.forEach(requires, function (requireEntry) {
                            // If no configuration is provided, try and find one from a previous load.
                            // If there isn't one, bail and let the normal flow run
                            Eif (angular.isString(requireEntry)) {
                                var config = self.getModuleConfig(requireEntry);
                                Eif (config === null) {
                                    moduleCache.push(requireEntry); // We don't know about this module, but something else might, so push it anyway.
                                    return;
                                }
                                requireEntry = config;
                                // ignore the name because it's probably not a real module name
                                config.name = undefined;
                            }

                            // Check if this dependency has been loaded previously
                            if (self.moduleExists(requireEntry.name)) {
                                // compare against the already loaded module to see if the new definition adds any new files
                                diff = requireEntry.files.filter(function (n) {
                                    return self.getModuleConfig(requireEntry.name).files.indexOf(n) < 0;
                                });

                                // If the module was redefined, advise via the console
                                if (diff.length !== 0) {
                                    self._$log.warn('Module "', moduleName, '" attempted to redefine configuration for dependency. "', requireEntry.name, '"\n Additional Files Loaded:', diff);
                                }

                                // Push everything to the file loader, it will weed out the duplicates.
                                if (angular.isDefined(self.filesLoader)) {
                                    // if a files loader is defined
                                    promisesList.push(self.filesLoader(requireEntry, localParams).then(function () {
                                        return self._loadDependencies(requireEntry);
                                    }));
                                } else {
                                    return reject(new Error('Error: New dependencies need to be loaded from external files (' + requireEntry.files + '), but no loader has been defined.'));
                                }
                                return;
                            } else if (angular.isArray(requireEntry)) {
                                var files = [];
                                angular.forEach(requireEntry, function (entry) {
                                    // let's check if the entry is a file name or a config name
                                    var config = self.getModuleConfig(entry);
                                    if (config === null) {
                                        files.push(entry);
                                    } else if (config.files) {
                                        files = files.concat(config.files);
                                    }
                                });
                                if (files.length > 0) {
                                    requireEntry = {
                                        files: files
                                    };
                                }
                            } else if (angular.isObject(requireEntry)) {
                                if (requireEntry.hasOwnProperty('name') && requireEntry['name']) {
                                    // The dependency doesn't exist in the module cache and is a new configuration, so store and push it.
                                    self.setModuleConfig(requireEntry);
                                    moduleCache.push(requireEntry['name']);
                                }
                            }

                            // Check if the dependency has any files that need to be loaded. If there are, push a new promise to the promise list.
                            if (angular.isDefined(requireEntry.files) && requireEntry.files.length !== 0) {
                                if (angular.isDefined(self.filesLoader)) {
                                    // if a files loader is defined
                                    promisesList.push(self.filesLoader(requireEntry, localParams).then(function () {
                                        return self._loadDependencies(requireEntry);
                                    }));
                                } else {
                                    return reject(new Error('Error: the module "' + requireEntry.name + '" is defined in external files (' + requireEntry.files + '), but no loader has been defined.'));
                                }
                            }
                        });

                        // Create a wrapper promise to watch the promise list and resolve it once everything is done.
                        return $q.all(promisesList);
                    },

                    /**
                     * Inject new modules into Angular
                     * @param moduleName
                     * @param localParams
                     * @param real
                     */
                    inject: function inject(moduleName) {
                        var localParams = arguments.length <= 1 || arguments[1] === undefined ? {} : arguments[1];
                        var real = arguments.length <= 2 || arguments[2] === undefined ? false : arguments[2];

                        var self = this,
                            deferred = $q.defer();
                        Iif (angular.isDefined(moduleName) && moduleName !== null) {
                            if (angular.isArray(moduleName)) {
                                var promisesList = [];
                                angular.forEach(moduleName, function (module) {
                                    promisesList.push(self.inject(module, localParams, real));
                                });
                                return $q.all(promisesList);
                            } else {
                                self._addToLoadList(self._getModuleName(moduleName), true, real);
                            }
                        }
                        if (modulesToLoad.length > 0) {
                            var res = modulesToLoad.slice(); // clean copy
                            var loadNext = function loadNext(moduleName) {
                                moduleCache.push(moduleName);
                                modulePromises[moduleName] = deferred.promise;
                                self._loadDependencies(moduleName, localParams).then(function success() {
                                    try {
                                        justLoaded = [];
                                        _register(providers, moduleCache, localParams);
                                    } catch (e) {
                                        self._$log.error(e.message);
                                        deferred.reject(e);
                                        return;
                                    }

                                    if (modulesToLoad.length > 0) {
                                        loadNext(modulesToLoad.shift()); // load the next in list
                                    } else {
                                            deferred.resolve(res); // everything has been loaded, resolve
                                        }
                                }, function error(err) {
                                    deferred.reject(err);
                                });
                            };

                            // load the first in list
                            loadNext(modulesToLoad.shift());
                        } else Iif (localParams && localParams.name && modulePromises[localParams.name]) {
                            return modulePromises[localParams.name];
                        } else {
                            deferred.resolve();
                        }
                        return deferred.promise;
                    },

                    /**
                     * Get the list of required modules/services/... for this module
                     * @param module
                     * @returns {Array}
                     */
                    getRequires: function getRequires(module) {
                        var requires = [];
                        angular.forEach(module.requires, function (requireModule) {
                            Eif (regModules.indexOf(requireModule) === -1) {
                                requires.push(requireModule);
                            }
                        });
                        return requires;
                    },

                    /**
                     * Invoke the new modules & component by their providers
                     * @param providers
                     * @param queue
                     * @param moduleName
                     * @param reconfig
                     * @private
                     */
                    _invokeQueue: _invokeQueue,

                    /**
                     * Check if a module has been invoked and registers it if not
                     * @param args
                     * @param moduleName
                     * @returns {boolean} is new
                     */
                    _registerInvokeList: _registerInvokeList,

                    /**
                     * Register a new module and loads it, executing the run/config blocks if needed
                     * @param providers
                     * @param registerModules
                     * @param params
                     * @private
                     */
                    _register: _register,

                    /**
                     * Add a module name to the list of modules that will be loaded in the next inject
                     * @param name
                     * @param force
                     * @private
                     */
                    _addToLoadList: _addToLoadList,

                    /**
                     * Unregister modules (you shouldn't have to use this)
                     * @param modules
                     */
                    _unregister: function _unregister(modules) {
                        if (angular.isDefined(modules)) {
                            if (angular.isArray(modules)) {
                                angular.forEach(modules, function (module) {
                                    regInvokes[module] = undefined;
                                });
                            }
                        }
                    }
                };
            };

            // Let's get the list of loaded modules & components
            this._init(angular.element(window.document));
        });

        var bootstrapFct = angular.bootstrap;
        angular.bootstrap = function (element, modules, config) {
            // Clean state from previous bootstrap
            regModules = ['ng', 'oc.lazyLoad'];
            regInvokes = {};
            regConfigs = [];
            modulesToLoad = [];
            realModules = [];
            recordDeclarations = [];
            broadcast = angular.noop;
            runBlocks = {};
            justLoaded = [];
            // we use slice to make a clean copy
            angular.forEach(modules.slice(), function (module) {
                _addToLoadList(module, true, true);
            });
            return bootstrapFct(element, modules, config);
        };

        var _addToLoadList = function _addToLoadList(name, force, real) {
            if ((recordDeclarations.length > 0 || force) && angular.isString(name) && modulesToLoad.indexOf(name) === -1) {
                modulesToLoad.push(name);
                Eif (real) {
                    realModules.push(name);
                }
            }
        };

        var ngModuleFct = angular.module;
        angular.module = function (name, requires, configFn) {
            _addToLoadList(name, false, true);
            return ngModuleFct(name, requires, configFn);
        };

        // CommonJS package manager support:
        Iif (typeof module !== 'undefined' && typeof exports !== 'undefined' && module.exports === exports) {
            module.exports = 'oc.lazyLoad';
        }
    })(angular, window);
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