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Java example source code file (director.js)

This example Java source code file (director.js) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

error, invalid, query_separator, regexp, router

The director.js Java example source code



/*
 *
 *  * Copyright 2015 Skymind,Inc.
 *  *
 *  *    Licensed under the Apache License, Version 2.0 (the "License");
 *  *    you may not use this file except in compliance with the License.
 *  *    You may obtain a copy of the License at
 *  *
 *  *        http://www.apache.org/licenses/LICENSE-2.0
 *  *
 *  *    Unless required by applicable law or agreed to in writing, software
 *  *    distributed under the License is distributed on an "AS IS" BASIS,
 *  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  *    See the License for the specific language governing permissions and
 *  *    limitations under the License.
 *
 */

//
// Generated on Tue Dec 16 2014 12:13:47 GMT+0100 (CET) by Charlie Robbins, Paolo Fragomeni & the Contributors (Using Codesurgeon).
// Version 1.2.6
//

(function (exports) {

/*
 * browser.js: Browser specific functionality for director.
 *
 * (C) 2011, Charlie Robbins, Paolo Fragomeni, & the Contributors.
 * MIT LICENSE
 *
 */

var dloc = document.location;

function dlocHashEmpty() {
  // Non-IE browsers return '' when the address bar shows '#'; Director's logic
  // assumes both mean empty.
  return dloc.hash === '' || dloc.hash === '#';
}

var listener = {
  mode: 'modern',
  hash: dloc.hash,
  history: false,

  check: function () {
    var h = dloc.hash;
    if (h != this.hash) {
      this.hash = h;
      this.onHashChanged();
    }
  },

  fire: function () {
    if (this.mode === 'modern') {
      this.history === true ? window.onpopstate() : window.onhashchange();
    }
    else {
      this.onHashChanged();
    }
  },

  init: function (fn, history) {
    var self = this;
    this.history = history;

    if (!Router.listeners) {
      Router.listeners = [];
    }

    function onchange(onChangeEvent) {
      for (var i = 0, l = Router.listeners.length; i < l; i++) {
        Router.listeners[i](onChangeEvent);
      }
    }

    //note IE8 is being counted as 'modern' because it has the hashchange event
    if ('onhashchange' in window && (document.documentMode === undefined
      || document.documentMode > 7)) {
      // At least for now HTML5 history is available for 'modern' browsers only
      if (this.history === true) {
        // There is an old bug in Chrome that causes onpopstate to fire even
        // upon initial page load. Since the handler is run manually in init(),
        // this would cause Chrome to run it twise. Currently the only
        // workaround seems to be to set the handler after the initial page load
        // http://code.google.com/p/chromium/issues/detail?id=63040
        setTimeout(function() {
          window.onpopstate = onchange;
        }, 500);
      }
      else {
        window.onhashchange = onchange;
      }
      this.mode = 'modern';
    }
    else {
      //
      // IE support, based on a concept by Erik Arvidson ...
      //
      var frame = document.createElement('iframe');
      frame.id = 'state-frame';
      frame.style.display = 'none';
      document.body.appendChild(frame);
      this.writeFrame('');

      if ('onpropertychange' in document && 'attachEvent' in document) {
        document.attachEvent('onpropertychange', function () {
          if (event.propertyName === 'location') {
            self.check();
          }
        });
      }

      window.setInterval(function () { self.check(); }, 50);

      this.onHashChanged = onchange;
      this.mode = 'legacy';
    }

    Router.listeners.push(fn);

    return this.mode;
  },

  destroy: function (fn) {
    if (!Router || !Router.listeners) {
      return;
    }

    var listeners = Router.listeners;

    for (var i = listeners.length - 1; i >= 0; i--) {
      if (listeners[i] === fn) {
        listeners.splice(i, 1);
      }
    }
  },

  setHash: function (s) {
    // Mozilla always adds an entry to the history
    if (this.mode === 'legacy') {
      this.writeFrame(s);
    }

    if (this.history === true) {
      window.history.pushState({}, document.title, s);
      // Fire an onpopstate event manually since pushing does not obviously
      // trigger the pop event.
      this.fire();
    } else {
      dloc.hash = (s[0] === '/') ? s : '/' + s;
    }
    return this;
  },

  writeFrame: function (s) {
    // IE support...
    var f = document.getElementById('state-frame');
    var d = f.contentDocument || f.contentWindow.document;
    d.open();
    d.write("<script>_hash = '" + s + "'; onload = parent.listener.syncHash;