history.js revision 25f90bf4c6f5a6680335821bcff312fcd2598107
/**
* Provides browser history management functionality using a simple
* and forward buttons work as the user expects and to provide bookmarkable URLs
* that return the user to the current application state, even in an Ajax
* application that doesn't perform full-page refreshes.
*
* @module history
* @since 3.2.0
*/
/**
* Provides global state management backed by an object, but with no browser
* support, use the history-html5 or history-hash modules.
*
* @module history
* @submodule history-base
* @class HistoryBase
* @uses EventTarget
* @constructor
* @param {Object} config (optional) configuration object, which may contain
* zero or more of the following properties:
*
* <dl>
* <dt>initialState (Object)</dt>
* <dd>
* merged into the current global state.
* </dd>
* </dl>
*/
Obj = Y.Object,
YArray = Y.Array,
DEFAULT_OPTIONS = {merge: true},
EVT_CHANGE = 'change',
SRC_ADD = 'add',
SRC_REPLACE = 'replace';
function HistoryBase() {
}
emitFacade : true,
prefix : 'history',
preventable: false,
queueable : true
});
}
// -- Private Methods ----------------------------------------------------------
/**
* Returns <code>true</code> if <i>value</i> is a simple object and not a
* function or an array.
*
* @method _isSimpleObject
* @param {mixed} value
* @return {Boolean}
* @private
*/
function _isSimpleObject(value) {
}
// -- Public Static Properties -------------------------------------------------
/**
* Name of this component.
*
* @property NAME
* @type String
* @static
*/
/**
* Constant used to identify state changes originating from the
* <code>add()</code> method.
*
* @property SRC_ADD
* @type String
* @static
* @final
*/
/**
* Constant used to identify state changes originating from the
* <code>replace()</code> method.
*
* @property SRC_REPLACE
* @type String
* @static
* @final
*/
/**
* Whether or not this browser supports the HTML5 History API.
*
* @property html5
* @type Boolean
* @static
*/
// All HTML5-capable browsers except Gecko 2+ (Firefox 4+) correctly return
// true for 'onpopstate' in win. In order to support Gecko 2, we fall back to a
// UA sniff for now. (current as of Firefox 4.0b2)
/**
* Whether or not this browser supports the <code>window.onhashchange</code>
* event natively. Note that even if this is <code>true</code>, you may
* still want to use HistoryHash's synthetic <code>hashchange</code> event
* since it normalizes implementation differences and fixes spec violations
* across various browsers.
*
* @property nativeHashChange
* @type Boolean
* @static
*/
// IE8 supports the hashchange event, but only in IE8 Standards
// Mode. However, IE8 in IE7 compatibility mode still defines the
// event but never fires it, so we can't just detect the event. We also can't
// just UA sniff for IE8, since other browsers support this event as well.
// -- Initialization -------------------------------------------------------
/**
* Initializes this HistoryBase instance. This method is called by the
* constructor.
*
* @method _init
* @param {Object} config configuration object
* @protected
*/
var initialState;
/**
* Configuration object provided by the user on instantiation, or an
* empty object if one wasn't provided.
*
* @property _config
* @type Object
* @default {}
* @protected
*/
/**
* Resolved initial state: a merge of the user-supplied initial state
* (if any) and any initial state provided by a subclass. This may
* differ from <code>_config.initialState</code>. If neither the config
* nor a subclass supplies an initial state, this property will be
* <code>null</code>.
*
* @property _initialState
* @type Object|null
* @default {}
* @protected
*/
config.initialState || null;
/**
* Fired when the state changes. To be notified of all state changes
* regardless of the History or YUI instance that generated them,
* subscribe to this event on <code>Y.Global</code>. If you would rather
* be notified only about changes generated by this specific History
* instance, subscribe to this event on the instance.
*
* @event history:change
* @param {EventFacade} e Event facade with the following additional
* properties:
*
* <dl>
* <dt>changed (Object)</dt>
* <dd>
* Object hash of state items that have been added or changed. The
* key is the item key, and the value is an object containing
* <code>newVal</code> and <code>prevVal</code> properties
* representing the values of the item both before and after the
* change. If the item was newly added, <code>prevVal</code> will be
* <code>undefined</code>.
* </dd>
*
* <dt>newVal (Object)</dt>
* <dd>
* change.
* </dd>
*
* <dt>prevVal (Object)</dt>
* <dd>
* change.
* </dd>
*
* <dt>removed (Object)</dt>
* <dd>
* removed. Values are the old values prior to removal.
* </dd>
*
* <dt>src (String)</dt>
* <dd>
* The source of the event. This can be used to selectively ignore
* events generated by certain sources.
* </dd>
* </dl>
*/
this.publish(EVT_CHANGE, {
broadcast: 2,
defaultFn: this._defChangeFn
});
// If initialState was provided, merge it into the current state.
if (initialState) {
this.add(initialState);
}
},
// -- Public Methods -------------------------------------------------------
/**
* Adds a state entry with new values for the specified keys. By default,
* the new state will be merged into the existing state, and new values will
* override existing values. Specifying a <code>null</code> or
* <code>undefined</code> value will cause that key to be removed from the
* new state entry.
*
* @method add
* @param {Object} options (optional) Zero or more of the following options:
* <dl>
* <dt>merge (Boolean)</dt>
* <dd>
* <p>
* If <code>true</code> (the default), the new state will be merged
* into the existing state. New values will override existing values,
* and <code>null</code> or <code>undefined</code> values will be
* removed from the state.
* </p>
*
* <p>
* If <code>false</code>, the existing state will be discarded as a
* whole and the new state will take its place.
* </p>
* </dd>
* </dl>
* @chainable
*/
add: function () {
},
/**
* Adds a state entry with a new value for a single key. By default, the new
* value will be merged into the existing state values, and will override an
* existing value with the same key if there is one. Specifying a
* <code>null</code> or <code>undefined</code> value will cause the key to
* be removed from the new state entry.
*
* @method addValue
* @param {String} key State parameter key.
* @param {String} value New value.
* @param {Object} options (optional) Zero or more options. See
* <code>add()</code> for a list of supported options.
* @chainable
*/
var state = {};
},
/**
* Returns the current value of the state parameter specified by <i>key</i>,
* no key is specified.
*
* @method get
* @param {String} key (optional) State parameter key.
* @return {Object|String} Value of the specified state parameter, or an
*/
if (key) {
} else {
}
},
/**
* Same as <code>add()</code> except that a new browser history entry will
* not be created. Instead, the current history entry will be replaced with
* the new state.
*
* @method replace
* @param {Object} options (optional) Zero or more options. See
* <code>add()</code> for a list of supported options.
* @chainable
*/
replace: function () {
},
/**
* Same as <code>addValue()</code> except that a new browser history entry
* will not be created. Instead, the current history entry will be replaced
* with the new state.
*
* @method replaceValue
* @param {String} key State parameter key.
* @param {String} value New value.
* @param {Object} options (optional) Zero or more options. See
* <code>add()</code> for a list of supported options.
* @chainable
*/
var state = {};
},
// -- Protected Methods ----------------------------------------------------
/**
* Changes the state. This method provides a common implementation shared by
* the public methods for changing state.
*
* @method _change
* @param {String} src Source of the change, for inclusion in event facades
* to facilitate filtering.
* @param {Object} options (optional) Zero or more options. See
* <code>add()</code> for a list of supported options.
* @protected
* @chainable
*/
}
return this;
},
/**
* Called by _resolveChanges() when the state has changed. This method takes
* care of actually firing the necessary events.
*
* @method _fireEvents
* @param {String} src Source of the changes, for inclusion in event facades
* to facilitate filtering.
* @param {Object} changes Resolved changes.
* @param {Object} options Zero or more options. See <code>add()</code> for
* a list of supported options.
* @protected
*/
// Fire the global change event.
this.fire(EVT_CHANGE, {
});
}, this);
}, this);
},
/**
* Fires a dynamic "[key]Change" event.
*
* @method _fireChangeEvent
* @param {String} src source of the change, for inclusion in event facades
* to facilitate filtering
* @param {String} key key of the item that was changed
* @param {Object} value object hash containing <i>newVal</i> and
* <i>prevVal</i> properties for the changed item
* @protected
*/
/**
* <p>
* Dynamic event fired when an individual history item is added or
* changed. The name of this event depends on the name of the key that
* changed. To listen to change events for a key named "foo", subscribe
* to the <code>fooChange</code> event; for a key named "bar", subscribe
* to <code>barChange</code>, etc.
* </p>
*
* <p>
* Key-specific events are only fired for instance-level changes; that
* is, changes that were made via the same History instance on which the
* event is subscribed. To be notified of changes made by other History
* instances, subscribe to the global <code>history:change</code> event.
* </p>
*
* @event [key]Change
* @param {EventFacade} e Event facade with the following additional
* properties:
*
* <dl>
* <dt>newVal (mixed)</dt>
* <dd>
* The new value of the item after the change.
* </dd>
*
* <dt>prevVal (mixed)</dt>
* <dd>
* The previous value of the item before the change, or
* <code>undefined</code> if the item was just added and has no
* previous value.
* </dd>
*
* <dt>src (String)</dt>
* <dd>
* The source of the event. This can be used to selectively ignore
* events generated by certain sources.
* </dd>
* </dl>
*/
});
},
/**
* Fires a dynamic "[key]Remove" event.
*
* @method _fireRemoveEvent
* @param {String} src source of the change, for inclusion in event facades
* to facilitate filtering
* @param {String} key key of the item that was removed
* @param {mixed} value value of the item prior to its removal
* @protected
*/
/**
* <p>
* Dynamic event fired when an individual history item is removed. The
* name of this event depends on the name of the key that was removed.
* To listen to remove events for a key named "foo", subscribe to the
* <code>fooRemove</code> event; for a key named "bar", subscribe to
* <code>barRemove</code>, etc.
* </p>
*
* <p>
* Key-specific events are only fired for instance-level changes; that
* is, changes that were made via the same History instance on which the
* event is subscribed. To be notified of changes made by other History
* instances, subscribe to the global <code>history:change</code> event.
* </p>
*
* @event [key]Remove
* @param {EventFacade} e Event facade with the following additional
* properties:
*
* <dl>
* <dt>prevVal (mixed)</dt>
* <dd>
* The value of the item before it was removed.
* </dd>
*
* <dt>src (String)</dt>
* <dd>
* The source of the event. This can be used to selectively ignore
* events generated by certain sources.
* </dd>
* </dl>
*/
});
},
/**
* Resolves the changes (if any) between <i>newState</i> and the current
* state and fires appropriate events if things have changed.
*
* @method _resolveChanges
* @param {String} src source of the changes, for inclusion in event facades
* to facilitate filtering
* new state
* @param {Object} options Zero or more options. See <code>add()</code> for
* a list of supported options.
* @protected
*/
var changed = {},
removed = {};
if (!newState) {
newState = {};
}
if (!options) {
options = {};
}
// Figure out what was added or changed.
};
isChanged = true;
}
}, this);
// Figure out what was removed.
isChanged = true;
}
}, this);
} else {
}
if (isChanged) {
this._fireEvents(src, {
}, options);
}
},
/**
* Stores the specified state. Don't call this method directly; go through
* _resolveChanges() to ensure that changes are resolved and all events are
* fired properly.
*
* @method _storeState
* @param {String} src source of the changes
* @param {Object} newState new state to store
* @param {Object} options Zero or more options. See <code>add()</code> for
* a list of supported options.
* @protected
*/
// Note: the src and options params aren't used here, but they are used
// by subclasses.
},
// -- Protected Event Handlers ---------------------------------------------
/**
* Default <code>history:change</code> event handler.
*
* @method _defChangeFn
* @param {EventFacade} e state change event facade
* @protected
*/
_defChangeFn: function (e) {
}
}, true);
Y.HistoryBase = HistoryBase;
/**
* Provides browser history management backed by
* <code>window.location.hash</code>, as well as convenience methods for working
* with the location hash and a synthetic <code>hashchange</code> event that
* normalizes differences across browsers.
*
* @module history
* @submodule history-hash
* @since 3.2.0
* @class HistoryHash
* @extends HistoryBase
* @constructor
* @param {Object} config (optional) Configuration object. See the HistoryBase
* documentation for details.
*/
var HistoryBase = Y.HistoryBase,
YArray = Y.Array,
SRC_HASH = 'hash',
function HistoryHash() {
}
// -- Initialization -------------------------------------------------------
// If an initialState was provided, merge the bookmarked state into it
// (the bookmarked state wins).
// Subscribe to the synthetic hashchange event (defined below) to handle
// changes.
},
// -- Protected Methods ----------------------------------------------------
// Update the location hash with the changes, but only if the new hash
// actually differs from the current hash (this avoids creating multiple
// history entries for a single state).
}
},
// -- Protected Event Handlers ---------------------------------------------
/**
* Handler for hashchange events.
*
* @method _afterHashChange
* @param {Event} e
* @protected
*/
_afterHashChange: function (e) {
}
}, {
// -- Public Static Properties ---------------------------------------------
NAME: 'historyHash',
/**
* Constant used to identify state changes originating from
* <code>hashchange</code> events.
*
* @property SRC_HASH
* @type String
* @static
* @final
*/
/**
* <p>
* Prefix to prepend when setting the hash fragment. For example, if the
* prefix is <code>!</code> and the hash fragment is set to
* <code>#foo=bar&baz=quux</code>, the final hash fragment in the URL will
* become <code>#!foo=bar&baz=quux</code>. This can be used to help make an
* Ajax application crawlable in accordance with Google's guidelines at
* </p>
*
* <p>
* Note that this prefix applies to all HistoryHash instances. It's not
* possible for individual instances to use their own prefixes since they
* all operate on the same URL.
* </p>
*
* @property hashPrefix
* @type String
* @default ''
* @static
*/
hashPrefix: '',
// -- Protected Static Properties ------------------------------------------
/**
*
* @property _REGEX_HASH
* @type RegExp
* @protected
* @static
* @final
*/
_REGEX_HASH: /([^\?#&]+)=([^&]+)/g,
// -- Public Static Methods ------------------------------------------------
/**
* pairs.
*
* @method createHash
* @return {String} location hash string
* @static
*/
createHash: function (params) {
hash = [];
}
});
},
/**
* Wrapper around <code>decodeURIComponent()</code> that also converts +
* chars into spaces.
*
* @method decode
* @param {String} string string to decode
* @return {String} decoded string
* @static
*/
},
/**
* Wrapper around <code>encodeURIComponent()</code> that converts spaces to
* + chars.
*
* @method encode
* @param {String} string string to encode
* @return {String} encoded string
* @static
*/
},
/**
* Gets the raw (not decoded) current location hash, minus the preceding '#'
* character and the hashPrefix (if one is set).
*
* @method getHash
* @return {String} current location hash
* @static
*/
// Gecko's window.location.hash returns a decoded string and we want all
// encoding untouched, so we need to get the hash value from
// window.location.href instead. We have to use UA sniffing rather than
// feature detection, since the only way to detect this would be to
// actually change the hash.
} : function () {
// Slight code duplication here, but execution speed is of the essence
// since getHash() is called every 50ms to poll for changes in browsers
// that don't support native onhashchange. An additional function call
// would add unnecessary overhead.
}),
/**
* Gets the current bookmarkable URL.
*
* @method getUrl
* @return {String} current bookmarkable URL
* @static
*/
getUrl: function () {
},
/**
* pairs. If <i>hash</i> is not specified, the current location hash will
* be used.
*
* @method parseHash
* @param {String} hash (optional) location hash string
* @static
*/
i,
len,
params = {},
if (prefix) {
}
}
}
return params;
},
/**
* Replaces the browser's current location hash with the specified hash
* and removes all forward navigation states, without creating a new browser
* history entry. Automatically prepends the <code>hashPrefix</code> if one
* is set.
*
* @method replaceHash
* @param {String} hash new location hash
* @static
*/
replaceHash: function (hash) {
}
},
/**
* Sets the browser's location hash to the specified string. Automatically
* prepends the <code>hashPrefix</code> if one is set.
*
* @method setHash
* @param {String} hash new location hash
* @static
*/
}
}
});
// -- Synthetic hashchange Event -----------------------------------------------
// TODO: YUIDoc currently doesn't provide a good way to document synthetic DOM
// events. For now, we're just documenting the hashchange event on the YUI
// object, which is about the best we can do until enhancements are made to
// YUIDoc.
/**
* <p>
* Synthetic <code>window.onhashchange</code> event that normalizes differences
* across browsers and provides support for browsers that don't natively support
* <code>onhashchange</code>.
* </p>
*
* <p>
* This event is provided by the <code>history-hash</code> module.
* </p>
*
* <p>
* <strong>Usage example:</strong>
* </p>
*
* <code><pre>
* YUI().use('history-hash', function (Y) {
* Y.on('hashchange', function (e) {
* // Handle hashchange events on the current window.
* }, Y.config.win);
* });
* </pre></code>
*
* @event hashchange
* @param {EventFacade} e Event facade with the following additional
* properties:
*
* <dl>
* <dt>oldHash</dt>
* <dd>
* Previous hash fragment value before the change.
* </dd>
*
* <dt>oldUrl</dt>
* <dd>
* Previous URL (including the hash fragment) before the change.
* </dd>
*
* <dt>newHash</dt>
* <dd>
* New hash fragment value after the change.
* </dd>
*
* <dt>newUrl</dt>
* <dd>
* New URL (including the hash fragment) after the change.
* </dd>
* </dl>
* @for YUI
* @since 3.2.0
*/
if (!hashNotifiers) {
}
// Ignore this subscription if the node is anything other than the
// window or document body, since those are the only elements that
// should support the hashchange event. Note that the body could also be
// a frameset, but that's okay since framesets support hashchange too.
}
},
if (index !== -1) {
}
}
});
if (HistoryBase.nativeHashChange) {
// Wrap the browser's native hashchange event.
// Iterate over a copy of the hashNotifiers array since a subscriber
// could detach during iteration and cause the array to be re-indexed.
_event : e,
});
});
}, win);
} else {
// Begin polling for location hash changes if there's not already a global
// poll running.
// cache. This works around a nasty Safari bug when the back button
// is used to return from a page on another domain, but results in
// slightly worse performance. This bug is not present in Chrome.
//
// Unfortunately a UA sniff is unavoidable here, but the
// consequences of a false positive are minor.
//
// Current as of Safari 5.0 (6533.16).
}
});
});
}
}, null, true);
}
}
Y.HistoryHash = HistoryHash;
// HistoryHash will never win over HistoryHTML5 unless useHistoryHTML5 is false.
Y.History = HistoryHash;
}
/**
* Improves IE6/7 support in history-hash by using a hidden iframe to create
* entries in IE's browser history. This module is only needed if IE6/7 support
* is necessary; it's not needed for any other browser.
*
* @module history
* @submodule history-hash-ie
* @since 3.2.0
*/
// Combination of a UA sniff to ensure this is IE (or a browser that wants us to
// treat it like IE) and feature detection for native hashchange support (false
// for IE < 8 or IE8/9 in IE7 mode).
HistoryHash = Y.HistoryHash,
HistoryHash.getHash = function () {
// The iframe's hash always wins over the parent frame's. This results
// in the unfortunate edge case that changing the parent's hash without
// using the YUI History API will not result in a hashchange event, but
// this is a reasonable tradeoff. The only time the parent frame's hash
// will be returned is if the iframe hasn't been created yet (i.e.,
// before domready).
};
HistoryHash.getUrl = function () {
} else {
}
};
/**
* Updates the history iframe with the specified hash.
*
* @method _updateIframe
* @param {String} hash location hash
* @param {Boolean} replace (optional) if <code>true</code>, the current
* history state will be replaced without adding a new history entry
* @protected
* @static
* @for HistoryHash
*/
if (replace) {
} else {
}
};
if (!iframe) {
Y.on('domready', function () {
// Create a hidden iframe to store history state, following the
// iframe-hiding recommendations from
//
// This iframe will allow history navigation within the current page
// context. After navigating to another page, all but the most
// recent history state will be lost.
//
// Earlier versions of the YUI History Utility attempted to work
// around this limitation by having the iframe load a static
// resource. This workaround was extremely fragile and tended to
// break frequently (and silently) since it was entirely dependent
// on IE's inconsistent handling of iframe history.
//
// Since this workaround didn't work much of the time anyway and
// added significant complexity, it has been removed, and IE6 and 7
// now get slightly degraded history support.
'<iframe src="javascript:0" style="display:none" height="0" width="0" tabindex="-1" title="empty"/>'
));
// Append the iframe to the documentElement rather than the body.
// Keeping it outside the body prevents scrolling on the initial
// page load (hat tip to Ben Alman and jQuery BBQ for this
// technique).
// Update the iframe with the initial location hash, if any. This
// will create an initial history entry that the user can return to
// after the state has changed.
});
// Listen for hashchange events and keep the parent window's location
// hash in sync with the hash stored in the iframe.
Y.on('hashchange', function (e) {
}
}, win);
}
}
/**
* Provides browser history management using the HTML5 history API.
*
* @module history
* @submodule history-html5
* @since 3.2.0
*/
/**
* <p>
* Provides browser history management using the HTML5 history API.
* </p>
*
* <p>
* When calling the <code>add()</code>, <code>addValue()</code>,
* <code>replace()</code>, or <code>replaceValue()</code> methods on
* <code>HistoryHTML5</code>, the following additional options are supported:
* </p>
*
* <dl>
* <dt><strong>title (String)</strong></dt>
* <dd>
* Title to use for the new history entry. Browsers will typically display
* this title to the user in the detailed history window or in a dropdown
* of the current document will be used.
* </dd>
*
* <dt><strong>url (String)</strong></dt>
* <dd>
* URL to display to the user for the new history entry. This URL will be
* visible in the browser's address bar and will be the bookmarked URL if
* absolute path ("/foo/bar"), or a full URL ("http://example.com/foo/bar").
* If you specify a full URL, the origin <i>must</i> be the same as the
* origin of the current page, or an error will occur. If no URL is
* specified, the current URL will not be changed.
* </dd>
* </dl>
*
* @class HistoryHTML5
* @extends HistoryBase
* @constructor
* @param {Object} config (optional) Configuration object. The following
* <code>HistoryHTML5</code>-specific properties are supported in addition to
* those supported by <code>HistoryBase</code>:
*
* <dl>
* <dt><strong>enableSessionFallback (Boolean)</strong></dt>
* <dd>
* <p>
* Set this to <code>true</code> to store the most recent history state in
* sessionStorage in order to seamlessly restore the previous state (if any)
* when <code>HistoryHTML5</code> is instantiated after a
* <code>window.onpopstate</code> event has already fired.
* </p>
*
* <p>
* By default, this setting is <code>false</code>.
* </p>
* </dd>
* </dl>
*/
var HistoryBase = Y.HistoryBase,
ENABLE_FALLBACK = 'enableSessionFallback',
SESSION_KEY = 'YUI_HistoryHTML5_state',
SRC_POPSTATE = 'popstate',
function HistoryHTML5() {
}
// -- Initialization -------------------------------------------------------
// If window.onload has already fired and the sessionStorage fallback is
// enabled, try to restore the last state from sessionStorage. This
// works around a shortcoming of the HTML5 history API: it's impossible
// to get the current state if the popstate event fires before you've
// subscribed to it. Since popstate fires immediately after onload,
// the last state may be lost if you return to a page from another page.
this._loadSessionState();
}
},
// -- Protected Methods ----------------------------------------------------
/**
* Returns a string unique to the current URL pathname that's suitable for
* use as a session storage key.
*
* @method _getSessionKey
* @return {String}
* @protected
*/
_getSessionKey: function () {
},
/**
* Attempts to load a state entry stored in session storage.
*
* @method _loadSessionState
* @protected
*/
_loadSessionState: function () {
sessionStorage[this._getSessionKey()];
if (lastState) {
try {
} catch (ex) {}
}
},
/**
* Stores the specified state entry in session storage if the
* <code>enableSessionFallback</code> config property is <code>true</code>
* and either <code>Y.JSON</code> or native JSON support is available and
* session storage is supported.
*
* @method _storeSessionState
* @param {mixed} state State to store. May be any type serializable to
* JSON.
* @protected
*/
_storeSessionState: function (state) {
}
},
/**
* Overrides HistoryBase's <code>_storeState()</code> and pushes or replaces
* a history entry using the HTML5 history API when necessary.
*
* @method _storeState
* @param {String} src Source of the changes.
* @param {Object} newState New state to store.
* @param {Object} options Zero or more options.
* @protected
*/
if (src !== SRC_POPSTATE) {
);
}
this._storeSessionState(newState);
},
// -- Protected Event Handlers ---------------------------------------------
/**
* Handler for popstate events.
*
* @method _onPopState
* @param {Event} e
* @protected
*/
_onPopState: function (e) {
this._storeSessionState(state);
}
}, {
// -- Public Static Properties ---------------------------------------------
NAME: 'historyhtml5',
/**
* Constant used to identify state changes originating from
* <code>popstate</code> events.
*
* @property SRC_POPSTATE
* @type String
* @static
* @final
*/
});
}
Y.HistoryHTML5 = HistoryHTML5;
/**
* <p>
* If <code>true</code>, the <code>Y.History</code> alias will always point to
* <code>Y.HistoryHTML5</code> when the history-html5 module is loaded, even if
* the current browser doesn't support HTML5 history.
* </p>
*
* <p>
* If <code>false</code>, the <code>Y.History</code> alias will always point to
* <code>Y.HistoryHash</code> when the history-hash module is loaded, even if
* the current browser supports HTML5 history.
* </p>
*
* <p>
* If neither <code>true</code> nor <code>false</code>, the
* <code>Y.History</code> alias will point to the best available history adapter
* that the browser supports. This is the default behavior.
* </p>
*
* @property useHistoryHTML5
* @type boolean
* @for config
* @since 3.2.0
*/
// HistoryHTML5 will always win over HistoryHash unless useHistoryHTML5 is false
// or HTML5 history is not supported.
if (useHistoryHTML5 === true || (useHistoryHTML5 !== false &&
HistoryBase.html5)) {
Y.History = HistoryHTML5;
}
YUI.add('history', function(Y){}, '@VERSION@' ,{use:['history-base', 'history-hash', 'history-hash-ie', 'history-html5']});