Yahoo! UI Library

history  3.0.0b1

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Class History

This class represents an instance of the browser history utility.

Constructor

History ( )

Methods

_checkIframeLoaded

private void _checkIframeLoaded ( )
Periodically checks whether our internal IFrame is ready to be used
Returns: void

_getHash

private string _getHash ( )
Returns the portion of the hash after the '#' symbol.
Returns: string
The hash portion of the document's location

_handleFQStateChange

private void _handleFQStateChange ( fqstate )
Sets the new currentState attribute of all modules depending on the new fully qualified state. Also notifies the modules which current state has changed.
Parameters:
fqstate <string> fully qualified state
Returns: void

_initialize

private void _initialize ( )
Finish up the initialization of the browser utility library.
Returns: void

_storeStates

private void _storeStates ( )
Stores the initial state and current state for all registered modules. On Safari, we also store all the fully qualified states visited by the application within a single browser session. The storage takes place in the form field specified during initialization.
Returns: void

_updateIFrame

private boolean _updateIFrame ( )
Update the IFrame with our new state.
Returns: boolean
true if successful. false otherwise.

getBookmarkedState

string getBookmarkedState ( moduleId )
Returns the state of a module according to the URL fragment identifier. This method is useful to initialize your modules if your application was bookmarked from a particular state.
Parameters:
moduleId <string> Non-empty string representing your module.
Returns: string
The bookmarked state of the specified module.

getCurrentState

string getCurrentState ( moduleId )
Returns the current state of the specified module.
Parameters:
moduleId <string> Non-empty string representing your module.
Returns: string
The current state of the specified module.

getQueryStringParameter

string getQueryStringParameter ( paramName , queryString )
Returns the value of the specified query string parameter. This method is not used internally by the Browser History Manager. However, it is provided here as a helper since many applications using the Browser History Manager will want to read the value of url parameters to initialize themselves.
Parameters:
paramName <string> Name of the parameter we want to look up.
queryString <string> Optional URL to look at. If not specified, this method uses the URL in the address bar.
Returns: string
The value of the specified parameter, or null.

initialize

void initialize ( stateField , historyIFrame )
Initializes the Browser History Manager. Call this method from a script block located right after the opening body tag.
Parameters:
stateField <string|HTML Element> used to store application states. Must be in the static markup.
historyIFrame <string|HTML Element> IFrame used to store the history (only required for IE6/7)
Returns: void

multiNavigate

boolean multiNavigate ( states )
Stores a new entry in the browser history by changing the state of several registered modules in one atomic operation.
Parameters:
states <object> Associative array of module-state pairs to set simultaneously.
Returns: boolean
Indicates whether the new state was successfully added to the history.

navigate

boolean navigate ( module , state )
Stores a new entry in the browser history by changing the state of a registered module.
Parameters:
module <string> Non-empty string representing your module.
state <string> String representing the new state of the specified module.
Returns: boolean
Indicates whether the new state was successfully added to the history.

register

History.Module register ( moduleId , initialState )
Registers a new module.
Parameters:
moduleId <string> Non-empty string uniquely identifying the module you wish to register.
initialState <string> The initial state of the specified module corresponding to its earliest history entry.
Returns: History.Module
The newly registered module

Events

history:globalStateChange

history:globalStateChange ( )
Fires when the global state of the page has changed (that is, when the state of at least one browser history module has changed)

history:moduleStateChange

history:moduleStateChange ( )
Fires when the state of a history module object has changed

history:ready

history:ready ( )
Fires when the browser history utility is ready

Files

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