src/backbone_modules/history.js - Code Metrics - HuasoFoundries/backbone_es6 - Measure and Improve Code Quality continuously with Scrutinizer

src/backbone_modules/history.js D
last analyzed 2017-11-02 18:02 UTC

↳ Parent: Project

Complexity

Total Complexity	65
Complexity/F	3.61

Size

Lines of Code	353
Function Count	18

Duplication

Duplicated Lines	0
Ratio	0 %

Importance

Changes	2
Bugs	0	Features	0

Metric	Value
cc	0
c	2
b	0
f	0
nc	150994944
dl	0
loc	353
rs	4.5
wmc	65
mnd	4
bc	51
fnc	18
bpm	2.8333
cpm	3.6111
noi	10

15 Functions

Rating	Name	Size	Complexity
A	_.extend.atRoot	4	1
F	_.extend.start	85	16
A	_.extend.getSearch	5	2
A	_.extend.getHash	4	2
B	_.extend.checkUrl	17	5
A	_.extend.getPath	6	2
C	_.extend.navigate	64	14
A	_.extend.decodeFragment	3	1
A	_.extend.route	6	1
A	_.extend._updateHash	9	2
A	history.js ➔ History	10	2
A	_.extend.matchRoot	5	1
A	_.extend.loadUrl	11	2
A	_.extend.getFragment	10	4
B	_.extend.stop	27	6

How to fix Complexity

import $ from 'jquery';

import _ from 'underscore';
import {
  Backbone
} from './core.js';
import {
  Events
} from './events.js';

// Backbone.History
// ----------------

// Handles cross-browser history management, based on either
// [pushState](http://diveintohtml5.info/history.html) and real URLs, or
// [onhashchange](https://developer.mozilla.org/en-US/docs/DOM/window.onhashchange)
// and URL fragments. If the browser supports neither (old IE, natch),
// falls back to polling.
var History = function () {
  this.handlers = [];
  this.checkUrl = _.bind(this.checkUrl, this);

  // Ensure that `History` can be used outside of the browser.
  if (typeof window !== 'undefined') {
    this.location = window.location;
    this.history = window.history;
  }
};

// Cached regex for stripping a leading hash/slash and trailing space.
var routeStripper = /^[#\/]|\s+$/g;

// Cached regex for stripping leading and trailing slashes.
var rootStripper = /^\/+|\/+$/g;

// Cached regex for stripping urls of hash.
var pathStripper = /#.*$/;

// Has the history handling already been started?
History.started = false;

// Set up all inheritable **Backbone.History** properties and methods.
_.extend(History.prototype, Events, {

  // The default interval to poll for hash changes, if necessary, is
  // twenty times a second.
  interval: 50,

  // Are we at the app root?
  atRoot: function () {
    var path = this.location.pathname.replace(/[^\/]$/, '$&/');
    return path === this.root && !this.getSearch();
  },

  // Does the pathname match the root?
  matchRoot: function () {
    var path = this.decodeFragment(this.location.pathname);
    var rootPath = path.slice(0, this.root.length - 1) + '/';
    return rootPath === this.root;
  },

  // Unicode characters in `location.pathname` are percent encoded so they're
  // decoded for comparison. `%25` should not be decoded since it may be part
  // of an encoded parameter.
  decodeFragment: function (fragment) {
    return decodeURI(fragment.replace(/%25/g, '%2525'));
  },

  // In IE6, the hash fragment and search params are incorrect if the
  // fragment contains `?`.
  getSearch: function () {
    var match = this.location.href.replace(/#.*/, '').match(
      /\?.+/);
    return match ? match[0] : '';
  },

  // Gets the true hash value. Cannot use location.hash directly due to bug
  // in Firefox where location.hash will always be decoded.
  getHash: function (window) {
    var match = (window || this).location.href.match(/#(.*)$/);
    return match ? match[1] : '';
  },

  // Get the pathname and search params, without the root.
  getPath: function () {
    var path = this.decodeFragment(
      this.location.pathname + this.getSearch()
    ).slice(this.root.length - 1);
    return path.charAt(0) === '/' ? path.slice(1) : path;
  },

  // Get the cross-browser normalized URL fragment from the path or hash.
  getFragment: function (fragment) {
    if (fragment == null) {
      if (this._usePushState || !this._wantsHashChange) {
        fragment = this.getPath();
      } else {
        fragment = this.getHash();
      }
    }
    return fragment.replace(routeStripper, '');
  },

  // Start the hash change handling, returning `true` if the current URL matches
  // an existing route, and `false` otherwise.
  start: function (options) {
    if (History.started) {
      throw new Error('Backbone.history has already been started');
    }
    History.started = true;

    // Figure out the initial configuration. Do we need an iframe?
    // Is pushState desired ... is it available?
    this.options = _.extend({
      root: '/'
    }, this.options, options);
    this.root = this.options.root;
    this._wantsHashChange = this.options.hashChange !== false;
    this._hasHashChange = 'onhashchange' in window && (document.documentMode ===
      void 0 || document.documentMode > 7);
    this._useHashChange = this._wantsHashChange && this._hasHashChange;
    this._wantsPushState = !!this.options.pushState;
    this._hasPushState = !!(this.history && this.history.pushState);
    this._usePushState = this._wantsPushState && this._hasPushState;
    this.fragment = this.getFragment();

    // Normalize root to always include a leading and trailing slash.
    this.root = ('/' + this.root + '/').replace(rootStripper,
      '/');

    // Transition from hashChange to pushState or vice versa if both are
    // requested.
    if (this._wantsHashChange && this._wantsPushState) {

      // If we've started off with a route from a `pushState`-enabled
      // browser, but we're currently in a browser that doesn't support it...
      if (!this._hasPushState && !this.atRoot()) {
        var rootPath = this.root.slice(0, -1) || '/';
        this.location.replace(rootPath + '#' + this.getPath());
        // Return immediately as browser will do redirect to new url
        return true;

        // Or if we've started out with a hash-based route, but we're currently
        // in a browser where it could be `pushState`-based instead...
      } else if (this._hasPushState && this.atRoot()) {
        this.navigate(this.getHash(), {
          replace: true
        });
      }

    }

    // Proxy an iframe to handle location events if the browser doesn't
    // support the `hashchange` event, HTML5 history, or the user wants
    // `hashChange` but not `pushState`.
    if (!this._hasHashChange && this._wantsHashChange && !this._usePushState) {
      this.iframe = document.createElement('iframe');
      this.iframe.src = 'javascript:0';

      this.iframe.style.display = 'none';
      this.iframe.tabIndex = -1;
      var body = document.body;
      // Using `appendChild` will throw on IE < 9 if the document is not ready.
      var iWindow = body.insertBefore(this.iframe, body.firstChild)
        .contentWindow;
      iWindow.document.open();
      iWindow.document.close();
      iWindow.location.hash = '#' + this.fragment;
    }

    // Add a cross-platform `addEventListener` shim for older browsers.
    var addEventListener = window.addEventListener || function (
      eventName,
      listener) {
      return attachEvent('on' + eventName, listener);
    };

    // Depending on whether we're using pushState or hashes, and whether
    // 'onhashchange' is supported, determine how we check the URL state.
    if (this._usePushState) {
      addEventListener('popstate', this.checkUrl, false);
    } else if (this._useHashChange && !this.iframe) {
      addEventListener('hashchange', this.checkUrl, false);
    } else if (this._wantsHashChange) {
      this._checkUrlInterval = setInterval(this.checkUrl, this.interval);
    }

    if (!this.options.silent) {
function isBig(a) {
    if (a > 5000) {
        return "yes";
    }
}

console.log(isBig(5001)); //returns yes
console.log(isBig(42)); //returns undefined
      return this.loadUrl();
    }
  },

  // Disable Backbone.history, perhaps temporarily. Not useful in a real app,
  // but possibly useful for unit testing Routers.
  stop: function () {
    // Add a cross-platform `removeEventListener` shim for older browsers.
    var removeEventListener = window.removeEventListener ||
      function (
        eventName, listener) {
        return detachEvent('on' + eventName, listener);
      };

    // Remove window listeners.
    if (this._usePushState) {
      removeEventListener('popstate', this.checkUrl, false);
    } else if (this._useHashChange && !this.iframe) {
      removeEventListener('hashchange', this.checkUrl, false);
    }

    // Clean up the iframe if necessary.
    if (this.iframe) {
      document.body.removeChild(this.iframe);
      this.iframe = null;
    }

    // Some environments will throw when clearing an undefined interval.
    if (this._checkUrlInterval) {
      clearInterval(this._checkUrlInterval);
    }
    History.started = false;
  },

  // Add a route to be tested when the fragment changes. Routes added later
  // may override previous routes.
  route: function (route, callback) {
    this.handlers.unshift({
      route: route,
      callback: callback
    });
  },

  // Checks the current URL to see if it has changed, and if it has,
  // calls `loadUrl`, normalizing across the hidden iframe.
  checkUrl: function (e) {

    var current = this.getFragment();

    // If the user pressed the back button, the iframe's hash will have
    // changed and we should use that for comparison.
    if (current === this.fragment && this.iframe) {
      current = this.getHash(this.iframe.contentWindow);
    }

    if (current === this.fragment) {
      return false;
    }
    if (this.iframe) {
      this.navigate(current);
    }
    this.loadUrl();

  },

  // Attempt to load the current URL fragment. If a route succeeds with a
  // match, returns `true`. If no defined routes matches the fragment,
  // returns `false`.
  loadUrl: function (fragment) {
    // If the root doesn't match, no routes can match either.
    if (!this.matchRoot()) return false;
if (a > 0)
    b = 42;
    fragment = this.fragment = this.getFragment(fragment);
    return _.some(this.handlers, function (handler) {
      if (handler.route.test(fragment)) {
function isBig(a) {
    if (a > 5000) {
        return "yes";
    }
}

console.log(isBig(5001)); //returns yes
console.log(isBig(42)); //returns undefined
        handler.callback(fragment);
        return true;
      }
    });
  },

  // Save a fragment into the hash history, or replace the URL state if the
  // 'replace' option is passed. You are responsible for properly URL-encoding
  // the fragment in advance.
  //
  // The options object can contain `trigger: true` if you wish to have the
  // route callback be fired (not usually desirable), or `replace: true`, if
  // you wish to modify the current URL without adding an entry to the history.
  navigate: function (fragment, options) {
    if (!History.started) {
      return false;
    }
    if (!options || options === true) {
      options = {
        trigger: !!options
      };
    }

    // Normalize the fragment.
    fragment = this.getFragment(fragment || '');

    // Don't include a trailing slash on the root.
    var rootPath = this.root;
    if (fragment === '' || fragment.charAt(0) === '?') {
      rootPath = rootPath.slice(0, -1) || '/';
    }
    var url = rootPath + fragment;

    // Strip the fragment of the query and hash for matching.
    fragment = fragment.replace(pathStripper, '');

    // Decode for matching.
    var decodedFragment = this.decodeFragment(fragment);

    if (this.fragment === decodedFragment) {
      return;
    }
    this.fragment = decodedFragment;

    // If pushState is available, we use it to set the fragment as a real URL.
    if (this._usePushState) {
      this.history[options.replace ? 'replaceState' : 'pushState']

        ({},
          document.title, url);

      // If hash changes haven't been explicitly disabled, update the hash
      // fragment to store history.
    } else if (this._wantsHashChange) {
      this._updateHash(this.location, fragment, options.replace);
      if (this.iframe && fragment !== this.getHash(this.iframe.contentWindow)) {
        var iWindow = this.iframe.contentWindow;

        // Opening and closing the iframe tricks IE7 and earlier to push a
        // history entry on hash-tag change.  When replace is true, we don't
        // want this.
        if (!options.replace) {
          iWindow.document.open();
          iWindow.document.close();
        }

        this._updateHash(iWindow.location, fragment, options.replace);
      }

      // If you've told us that you explicitly don't want fallback hashchange-
      // based history, then `navigate` becomes a page refresh.
    } else {
      return this.location.assign(url);
    }
    if (options.trigger) {
function isBig(a) {
    if (a > 5000) {
        return "yes";
    }
}

console.log(isBig(5001)); //returns yes
console.log(isBig(42)); //returns undefined
      return this.loadUrl(fragment);
    }
  },

  // Update the hash location, either replacing the current entry, or adding
  // a new one to the browser history.
  _updateHash: function (location, fragment, replace) {
    if (replace) {
      var href = location.href.replace(/(javascript:|#).*$/, '');
      location.replace(href + '#' + fragment);
    } else {
      // Some browsers require that `hash` contains a leading #.
      location.hash = '#' + fragment;
    }
  }

});

export {
  History
};


1			import $ from 'jquery';
			0 ignored issues – show introduced 2017-09-30 13:51 UTC by Report Bug Copy Issue Report Definition for rule 'keyword-spacing' was not found Loading history...
2			import _ from 'underscore';
3			import {
4			Backbone
5			} from './core.js';
6			import {
7			Events
8			} from './events.js';
9
10			// Backbone.History
11			// ----------------
12
13			// Handles cross-browser history management, based on either
14			// [pushState](http://diveintohtml5.info/history.html) and real URLs, or
15			// [onhashchange](https://developer.mozilla.org/en-US/docs/DOM/window.onhashchange)
16			// and URL fragments. If the browser supports neither (old IE, natch),
17			// falls back to polling.
18			var History = function () {
19			this.handlers = [];
20			this.checkUrl = _.bind(this.checkUrl, this);
21
22			// Ensure that `History` can be used outside of the browser.
23			if (typeof window !== 'undefined') {
24			this.location = window.location;
25			this.history = window.history;
26			}
27			};
28
29			// Cached regex for stripping a leading hash/slash and trailing space.
30			var routeStripper = /^[#\/]\|\s+$/g;
31
32			// Cached regex for stripping leading and trailing slashes.
33			var rootStripper = /^\/+\|\/+$/g;
34
35			// Cached regex for stripping urls of hash.
36			var pathStripper = /#.*$/;
37
38			// Has the history handling already been started?
39			History.started = false;
40
41			// Set up all inheritable Backbone.History properties and methods.
42			_.extend(History.prototype, Events, {
43
44			// The default interval to poll for hash changes, if necessary, is
45			// twenty times a second.
46			interval: 50,
47
48			// Are we at the app root?
49			atRoot: function () {
50			var path = this.location.pathname.replace(/[^\/]$/, '$&/');
51			return path === this.root && !this.getSearch();
52			},
53
54			// Does the pathname match the root?
55			matchRoot: function () {
56			var path = this.decodeFragment(this.location.pathname);
57			var rootPath = path.slice(0, this.root.length - 1) + '/';
58			return rootPath === this.root;
59			},
60
61			// Unicode characters in `location.pathname` are percent encoded so they're
62			// decoded for comparison. `%25` should not be decoded since it may be part
63			// of an encoded parameter.
64			decodeFragment: function (fragment) {
65			return decodeURI(fragment.replace(/%25/g, '%2525'));
66			},
67
68			// In IE6, the hash fragment and search params are incorrect if the
69			// fragment contains `?`.
70			getSearch: function () {
71			var match = this.location.href.replace(/#.*/, '').match(
72			/\?.+/);
73			return match ? match[0] : '';
74			},
75
76			// Gets the true hash value. Cannot use location.hash directly due to bug
77			// in Firefox where location.hash will always be decoded.
78			getHash: function (window) {
79			var match = (window \|\| this).location.href.match(/#(.*)$/);
80			return match ? match[1] : '';
81			},
82
83			// Get the pathname and search params, without the root.
84			getPath: function () {
85			var path = this.decodeFragment(
86			this.location.pathname + this.getSearch()
87			).slice(this.root.length - 1);
88			return path.charAt(0) === '/' ? path.slice(1) : path;
89			},
90
91			// Get the cross-browser normalized URL fragment from the path or hash.
92			getFragment: function (fragment) {
93			if (fragment == null) {
94			if (this._usePushState \|\| !this._wantsHashChange) {
95			fragment = this.getPath();
96			} else {
97			fragment = this.getHash();
98			}
99			}
100			return fragment.replace(routeStripper, '');
101			},
102
103			// Start the hash change handling, returning `true` if the current URL matches
104			// an existing route, and `false` otherwise.
105			start: function (options) {
106			if (History.started) {
107			throw new Error('Backbone.history has already been started');
108			}
109			History.started = true;
110
111			// Figure out the initial configuration. Do we need an iframe?
112			// Is pushState desired ... is it available?
113			this.options = _.extend({
114			root: '/'
115			}, this.options, options);
116			this.root = this.options.root;
117			this._wantsHashChange = this.options.hashChange !== false;
118			this._hasHashChange = 'onhashchange' in window && (document.documentMode ===
119			void 0 \|\| document.documentMode > 7);
120			this._useHashChange = this._wantsHashChange && this._hasHashChange;
121			this._wantsPushState = !!this.options.pushState;
122			this._hasPushState = !!(this.history && this.history.pushState);
123			this._usePushState = this._wantsPushState && this._hasPushState;
124			this.fragment = this.getFragment();
125
126			// Normalize root to always include a leading and trailing slash.
127			this.root = ('/' + this.root + '/').replace(rootStripper,
128			'/');
129
130			// Transition from hashChange to pushState or vice versa if both are
131			// requested.
132			if (this._wantsHashChange && this._wantsPushState) {
133
134			// If we've started off with a route from a `pushState`-enabled
135			// browser, but we're currently in a browser that doesn't support it...
136			if (!this._hasPushState && !this.atRoot()) {
137			var rootPath = this.root.slice(0, -1) \|\| '/';
138			this.location.replace(rootPath + '#' + this.getPath());
139			// Return immediately as browser will do redirect to new url
140			return true;
141
142			// Or if we've started out with a hash-based route, but we're currently
143			// in a browser where it could be `pushState`-based instead...
144			} else if (this._hasPushState && this.atRoot()) {
145			this.navigate(this.getHash(), {
146			replace: true
147			});
148			}
149
150			}
151
152			// Proxy an iframe to handle location events if the browser doesn't
153			// support the `hashchange` event, HTML5 history, or the user wants
154			// `hashChange` but not `pushState`.
155			if (!this._hasHashChange && this._wantsHashChange && !this._usePushState) {
156			this.iframe = document.createElement('iframe');
157			this.iframe.src = 'javascript:0';
			0 ignored issues – show introduced 2017-09-30 13:51 UTC by Report Bug Copy Issue Report Script URL is a form of eval. Loading history...
158			this.iframe.style.display = 'none';
159			this.iframe.tabIndex = -1;
160			var body = document.body;
161			// Using `appendChild` will throw on IE < 9 if the document is not ready.
162			var iWindow = body.insertBefore(this.iframe, body.firstChild)
163			.contentWindow;
164			iWindow.document.open();
165			iWindow.document.close();
166			iWindow.location.hash = '#' + this.fragment;
167			}
168
169			// Add a cross-platform `addEventListener` shim for older browsers.
170			var addEventListener = window.addEventListener \|\| function (
171			eventName,
172			listener) {
173			return attachEvent('on' + eventName, listener);
174			};
175
176			// Depending on whether we're using pushState or hashes, and whether
177			// 'onhashchange' is supported, determine how we check the URL state.
178			if (this._usePushState) {
179			addEventListener('popstate', this.checkUrl, false);
180			} else if (this._useHashChange && !this.iframe) {
181			addEventListener('hashchange', this.checkUrl, false);
182			} else if (this._wantsHashChange) {
183			this._checkUrlInterval = setInterval(this.checkUrl, this.interval);
184			}
185
186			if (!this.options.silent) {
			0 ignored issues – show Complexity Best Practice introduced 2017-11-02 17:37 UTC by Report Bug Copy Issue Report There is no return statement if `!this.options.silent` is `false`. Are you sure this is correct? If so, consider adding `return;` explicitly. This check looks for functions where a `return` statement is found in some execution paths, but not in all. Consider this little piece of code function isBig(a) { if (a > 5000) { return "yes"; } } console.log(isBig(5001)); //returns yes console.log(isBig(42)); //returns undefined The function `isBig` will only return a specific value when its parameter is bigger than 5000. In any other case, it will implicitly return `undefined`. This behaviour may not be what you had intended. In any case, you can add a `return undefined` to the other execution path to make the return value explicit. Loading history...
187			return this.loadUrl();
188			}
189			},
190
191			// Disable Backbone.history, perhaps temporarily. Not useful in a real app,
192			// but possibly useful for unit testing Routers.
193			stop: function () {
194			// Add a cross-platform `removeEventListener` shim for older browsers.
195			var removeEventListener = window.removeEventListener \|\|
196			function (
197			eventName, listener) {
198			return detachEvent('on' + eventName, listener);
199			};
200
201			// Remove window listeners.
202			if (this._usePushState) {
203			removeEventListener('popstate', this.checkUrl, false);
204			} else if (this._useHashChange && !this.iframe) {
205			removeEventListener('hashchange', this.checkUrl, false);
206			}
207
208			// Clean up the iframe if necessary.
209			if (this.iframe) {
210			document.body.removeChild(this.iframe);
211			this.iframe = null;
212			}
213
214			// Some environments will throw when clearing an undefined interval.
215			if (this._checkUrlInterval) {
216			clearInterval(this._checkUrlInterval);
217			}
218			History.started = false;
219			},
220
221			// Add a route to be tested when the fragment changes. Routes added later
222			// may override previous routes.
223			route: function (route, callback) {
224			this.handlers.unshift({
225			route: route,
226			callback: callback
227			});
228			},
229
230			// Checks the current URL to see if it has changed, and if it has,
231			// calls `loadUrl`, normalizing across the hidden iframe.
232			checkUrl: function (e) {
			0 ignored issues – show Unused Code introduced 2017-09-30 13:51 UTC by Report Bug Copy Issue Report The parameter `e` is not used and could be removed. This check looks for parameters in functions that are not used in the function body and are not followed by other parameters which are used inside the function. Loading history...
233			var current = this.getFragment();
234
235			// If the user pressed the back button, the iframe's hash will have
236			// changed and we should use that for comparison.
237			if (current === this.fragment && this.iframe) {
238			current = this.getHash(this.iframe.contentWindow);
239			}
240
241			if (current === this.fragment) {
242			return false;
243			}
244			if (this.iframe) {
245			this.navigate(current);
246			}
247			this.loadUrl();
			0 ignored issues – show Best Practice introduced 2017-11-02 17:37 UTC by Report Bug Copy Issue Report There is no `return` statement in this branch, but you do return something in other branches. Did you maybe miss it? If you do not want to return anything, consider adding `return undefined;` explicitly. Loading history...
248			},
249
250			// Attempt to load the current URL fragment. If a route succeeds with a
251			// match, returns `true`. If no defined routes matches the fragment,
252			// returns `false`.
253			loadUrl: function (fragment) {
254			// If the root doesn't match, no routes can match either.
255			if (!this.matchRoot()) return false;
			0 ignored issues – show Coding Style Best Practice introduced 2017-09-30 13:51 UTC by Report Bug Copy Issue Report Curly braces around statements make for more readable code and help prevent bugs when you add further statements. Consider adding curly braces around all statements when they are executed conditionally. This is optional if there is only one statement, but leaving them out can lead to unexpected behaviour if another statement is added later. Consider: if (a > 0) b = 42; If you or someone else later decides to put another statement in, only the first statement will be executed. if (a > 0) console.log("a > 0"); b = 42; In this case the statement `b = 42` will always be executed, while the logging statement will be executed conditionally. if (a > 0) { console.log("a > 0"); b = 42; } ensures that the proper code will be executed conditionally no matter how many statements are added or removed. Loading history... introduced 2017-09-30 13:51 UTC by Report Bug Copy Issue Report Expected { after 'if' condition. Loading history...
256			fragment = this.fragment = this.getFragment(fragment);
257			return _.some(this.handlers, function (handler) {
258			if (handler.route.test(fragment)) {
			0 ignored issues – show Complexity Best Practice introduced 2017-09-30 13:51 UTC by Report Bug Copy Issue Report There is no return statement if `handler.route.test(fragment)` is `false`. Are you sure this is correct? If so, consider adding `return;` explicitly. This check looks for functions where a `return` statement is found in some execution paths, but not in all. Consider this little piece of code function isBig(a) { if (a > 5000) { return "yes"; } } console.log(isBig(5001)); //returns yes console.log(isBig(42)); //returns undefined The function `isBig` will only return a specific value when its parameter is bigger than 5000. In any other case, it will implicitly return `undefined`. This behaviour may not be what you had intended. In any case, you can add a `return undefined` to the other execution path to make the return value explicit. Loading history...
259			handler.callback(fragment);
260			return true;
261			}
262			});
263			},
264
265			// Save a fragment into the hash history, or replace the URL state if the
266			// 'replace' option is passed. You are responsible for properly URL-encoding
267			// the fragment in advance.
268			//
269			// The options object can contain `trigger: true` if you wish to have the
270			// route callback be fired (not usually desirable), or `replace: true`, if
271			// you wish to modify the current URL without adding an entry to the history.
272			navigate: function (fragment, options) {
273			if (!History.started) {
274			return false;
275			}
276			if (!options \|\| options === true) {
277			options = {
278			trigger: !!options
279			};
280			}
281
282			// Normalize the fragment.
283			fragment = this.getFragment(fragment \|\| '');
284
285			// Don't include a trailing slash on the root.
286			var rootPath = this.root;
287			if (fragment === '' \|\| fragment.charAt(0) === '?') {
288			rootPath = rootPath.slice(0, -1) \|\| '/';
289			}
290			var url = rootPath + fragment;
291
292			// Strip the fragment of the query and hash for matching.
293			fragment = fragment.replace(pathStripper, '');
294
295			// Decode for matching.
296			var decodedFragment = this.decodeFragment(fragment);
297
298			if (this.fragment === decodedFragment) {
299			return;
300			}
301			this.fragment = decodedFragment;
302
303			// If pushState is available, we use it to set the fragment as a real URL.
304			if (this._usePushState) {
305			this.history[options.replace ? 'replaceState' : 'pushState']
			0 ignored issues – show introduced 2017-09-30 13:51 UTC by Report Bug Copy Issue Report Unexpected space between function name and paren. Loading history...
306			({},
307			document.title, url);
308
309			// If hash changes haven't been explicitly disabled, update the hash
310			// fragment to store history.
311			} else if (this._wantsHashChange) {
312			this._updateHash(this.location, fragment, options.replace);
313			if (this.iframe && fragment !== this.getHash(this.iframe.contentWindow)) {
314			var iWindow = this.iframe.contentWindow;
315
316			// Opening and closing the iframe tricks IE7 and earlier to push a
317			// history entry on hash-tag change. When replace is true, we don't
318			// want this.
319			if (!options.replace) {
320			iWindow.document.open();
321			iWindow.document.close();
322			}
323
324			this._updateHash(iWindow.location, fragment, options.replace);
325			}
326
327			// If you've told us that you explicitly don't want fallback hashchange-
328			// based history, then `navigate` becomes a page refresh.
329			} else {
330			return this.location.assign(url);
331			}
332			if (options.trigger) {
			0 ignored issues – show Complexity Best Practice introduced 2017-11-02 17:37 UTC by Report Bug Copy Issue Report There is no return statement if `options.trigger` is `false`. Are you sure this is correct? If so, consider adding `return;` explicitly. This check looks for functions where a `return` statement is found in some execution paths, but not in all. Consider this little piece of code function isBig(a) { if (a > 5000) { return "yes"; } } console.log(isBig(5001)); //returns yes console.log(isBig(42)); //returns undefined The function `isBig` will only return a specific value when its parameter is bigger than 5000. In any other case, it will implicitly return `undefined`. This behaviour may not be what you had intended. In any case, you can add a `return undefined` to the other execution path to make the return value explicit. Loading history...
333			return this.loadUrl(fragment);
334			}
335			},
336
337			// Update the hash location, either replacing the current entry, or adding
338			// a new one to the browser history.
339			_updateHash: function (location, fragment, replace) {
340			if (replace) {
341			var href = location.href.replace(/(javascript:\|#).*$/, '');
342			location.replace(href + '#' + fragment);
343			} else {
344			// Some browsers require that `hash` contains a leading #.
345			location.hash = '#' + fragment;
346			}
347			}
348
349			});
350
351			export {
352			History
353			};
354

HuasoFoundries / backbone_es6

src/backbone_modules/history.js D last analyzed 2017-11-02 18:02 UTC

Complexity

Size

Duplication

Importance

15 Functions

How to fix Complexity

Complexity

Duplication Side-by-Side

Filter issues like

src/backbone_modules/history.js D
last analyzed 2017-11-02 18:02 UTC