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minor refactor for comprehension

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John Bender 2011-08-15 17:01:37 -07:00
parent c864dac3b1
commit 43b1b776d9
1 changed files with 62 additions and 63 deletions
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125
js/jquery.mobile.navigation.pushstate.js
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@ -5,86 +5,85 @@
* http://jquery.org/license
*/
( function( $, window ) {
// For now, let's Monkeypatch this onto the end of $.mobile._registerInternalEvents
var oldRegisterInternalEvents = $.mobile._registerInternalEvents;
var pushStateHandler = self = {},
oldRegisterInternalEvents = $.mobile._registerInternalEvents,
$win = $( window );
$.mobile._registerInternalEvents = function(){
// Call previous function
oldRegisterInternalEvents();
// Initial href without hash becomes base for hash changes
var initialFilePath = location.pathname,
// Begin with popstate listening disabled, since it fires at onload in chrome
popListeningEnabled = false,
// Support for nested lists and any other clientside-generated subpages
subkey = "&" + $.mobile.subPageUrlKey,
// Support for dialog hash urls
dialog = "&ui-state",
// Cache window
$win = $( window ),
$.extend( pushStateHandler, {
initialFilePath: location.pathname,
// Flag for tracking if a Hashchange naturally occurs after each popstate + replace
hashchangeFired = false;
// Begin with popstate listening disabled, since it fires at onload in chrome
popListeningEnabled: false,
$win.bind( "hashchange replacehash", function( e ) {
// Support for nested lists and any other clientside-generated subpages
subkey: "&" + $.mobile.subPageUrlKey,
hashchangeFired = true;
// Support for dialog hash urls
dialog: "&ui-state",
if( $.support.pushState ){
var hash = location.hash || "#" + initialFilePath,
href = hash.replace( "#", "" );
//support dialog urls
if( href ){
if( href.indexOf( dialog ) > -1 ) {
href = href.split( dialog ).join( "#" + dialog );
} else if( href.indexOf( subkey ) > -1 ) {
href = href.split( subkey ).join( "#" + subkey );
// Flag for tracking if a Hashchange naturally occurs after each popstate + replace
hashchangeFired: false,
onHashAlter: function( e ) {
self.hashchangeFired = true;
if( $.support.pushState ) {
var hash = location.hash || "#" + self.initialFilePath,
href = hash.replace( "#", "" );
//support dialog urls
if( href ) {
if( href.indexOf( self.dialog ) > -1 ) {
href = href.split( self.dialog ).join( "#" + self.dialog );
} else if( href.indexOf( self.subkey ) > -1 ) {
href = href.split( self.subkey ).join( "#" + self.subkey );
}
}
history.replaceState( { hash: hash, title: document.title }, document.title, href );
}
});
},
// Handle popstate events the occur through history changes
$win.bind( "popstate", function( e ) {
if( popListeningEnabled ){
if( e.originalEvent.state ) {
history.replaceState( e.originalEvent.state, e.originalEvent.state.title, initialFilePath + e.originalEvent.state.hash );
onPopState: function( e ) {
if( self.popListeningEnabled && e.originalEvent.state ) {
history.replaceState( e.originalEvent.state, e.originalEvent.state.title, self.initialFilePath + e.originalEvent.state.hash );
// Urls that reference subpages will fire their own hashchange, so we don't want to trigger 2 in that case.
hashchangeFired = false;
// Urls that reference subpages will fire their own hashchange, so we don't want to trigger 2 in that case.
self.hashchangeFired = false;
setTimeout(function(){
if( !hashchangeFired ) {
$win.trigger( "hashchange" );
}
hashchangeFired = false;
}, 0);
setTimeout(function() {
if( !self.hashchangeFired ) {
$win.trigger( "hashchange" );
}
}
self.hashchangeFired = false;
}, 0);
}
});
// Replace the hash before pushstate listening is enabled
$win.trigger( "replacehash" );
},
// Enable pushstate listening *after window onload
// To ignore the initial pop that Chrome calls at onload
$win.load(function(){
setTimeout(function(){
popListeningEnabled = true;
}, 0 );
});
init: function() {
$win.bind( "hashchange replacehash", self.onHashAlter );
// Handle popstate events the occur through history changes
$win.bind( "popstate", self.onPopState );
// Replace the hash before pushstate listening is enabled
$win.trigger( "replacehash" );
// Enable pushstate listening *after window onload
// To ignore the initial pop that Chrome calls at onload
$win.load(function() {
setTimeout(function() {
self.popListeningEnabled = true;
}, 0 );
});
}
});
$.mobile._registerInternalEvents = function(){
// Call previous function
oldRegisterInternalEvents();
pushStateHandler.init();
};
})( jQuery, this );