Maps API for JavaScript Developer's Guide

H.ui.base.Button

Class Summary

This class represents a button.

[ For full details, see the Class Details ]

Method Summary

Table 1. Methods
Methods
`getState () : {H.ui.base.Button.State}` This method retrieves the current state of the button.
`setState (state, opt_suppressEvent) : {H.ui.base.Button}` This method sets the state of this button.
`getLabel () : {string}` This method retrieves the label string for the given button.
`setLabel (label, opt_force) : {H.ui.base.Button}` This method sets the label string for the given button object.
`addEventListener (type, handler, opt_capture, opt_scope)` This method sets a listener for a specific event triggered by the given element.
`removeEventListener (type, handler, opt_capture, opt_scope)` This method removes a previously added listener from the event target.
`renderInternal (element, doc)` This method is the concrete implementation of the UI element. It receives the pre-rendered HTML element which may be modified by deriving classes.
`isDisabled () : {boolean}` This method retrieves a value indicating if the given UI element is disabled.
`setDisabled (disabled, opt_force) : {H.ui.base.Element}` This method sets a value indicating if the given UI element is disabled.
`getData () : {*}` This method retrieves previously stored arbitrary data from the given element.
`setData (data)` This method stores arbitrary data with the given UI element.
`getElement () : {?HTMLElement}` This method retrieves the HTML element the given UI element renders.
`setVisibility (visibility)` This method sets a value indicating if the given element is visible.
`getVisibility () : {boolean}` This method retrieves a value indicating if the given element is visibile.
`addClass (className) : {H.ui.base.Element}` This method adds a CSS class to the given UI element (if it is not already present).
`removeClass (className) : {H.ui.base.Element}` This method removes a CSS class from the given UI element (if it is present).

Events Summary

Table 2. Events
Events
`statechange : {H.util.Event}` This event is dispatched by the button when its state changes.

Class Description

This class represents a button.

Constructor Details

H.ui.base.Button(opt_options)

Parameters:
opt_options:: {H.ui.base.Button.Options=} [optional]
: Optional parameters to be passed to the button instance

Method Details

getState () : {H.ui.base.Button.State}

This method retrieves the current state of the button.

Returns:
: {H.ui.base.Button.State}
: The current state of the button

setState (state, opt_suppressEvent) : {H.ui.base.Button}

This method sets the state of this button.

Parameters:
state:: {H.ui.base.Button.State}
: A value to which the button is to be set
opt_suppressEvent:: {boolean=} [optional]
: An optional flag indicating that the onStateChange callback is not to be invoked

Returns:
: {H.ui.base.Button}
: An object representing this button instance

getLabel () : {string}

This method retrieves the label string for the given button.

Returns:
: {string}
: The label string for the button

setLabel (label, opt_force) : {H.ui.base.Button}

This method sets the label string for the given button object.

Parameters:
label:: {string}
: The label to set on the given button object
opt_force:: {boolean=} [optional]
: A Boolean flag indicating if the new label should be set and propagated even if it has the same value as the current one (true) or not (false).

Returns:
: {H.ui.base.Button}
: An object representing the given button object instance

addEventListener (type, handler, opt_capture, opt_scope)

This method sets a listener for a specific event triggered by the given element.

Parameters:
type:: {string}
: The name of the event type
handler:: {!Function}
: An event handler function to be invoked when the event is fired
opt_capture:: {boolean=} [optional]
: If true, listening is active in the capture phase (bubble otherwise)
opt_scope:: {Object=} [optional]
: The scope for the handler function

removeEventListener (type, handler, opt_capture, opt_scope)

This method removes a previously added listener from the event target.

Parameters:
type:: {string}
: The name of the event type
handler:: {!Function}
: The previously added event handler
opt_capture:: {boolean=} [optional]
: If true, listening is active in the capture phase (bubble otherwise)
opt_scope:: {Object=} [optional]
: The scope for the handler function

renderInternal (element, doc)

This method is the concrete implementation of the UI element. It receives the pre-rendered HTML element which may be modified by deriving classes.

Parameters:
element:: {Element}
: The HTML representation of the given UI element
doc:: {Document}
: The HTML document into which the give UI element is rendered

isDisabled () : {boolean}

This method retrieves a value indicating if the given UI element is disabled.

Returns:
: {boolean}
: true if the element is disabled, false otherwise

setDisabled (disabled, opt_force) : {H.ui.base.Element}

This method sets a value indicating if the given UI element is disabled.

Parameters:
disabled:: {boolean}
: true to disable the element, false to enable it
opt_force:: {boolean=} [optional]
: An optional Boolean flag indicating that the value should be set and propagated even if it is the same as the current state

Returns:
: {H.ui.base.Element}
: An object representing the given element instance

getData () : {*}

This method retrieves previously stored arbitrary data from the given element.

Returns:
: {*}
: The previously stored data object or null if no data was stored.

setData (data)

This method stores arbitrary data with the given UI element.

Parameters:
data:: {*}
: The data to be stored

getElement () : {?HTMLElement}

This method retrieves the HTML element the given UI element renders.

Note: If the UI element has not been rendered, the method retrieves null.

Returns:
: {?HTMLElement}
: An object representing the given element instance or null

setVisibility (visibility)

This method sets a value indicating if the given element is visible.

Parameters:
visibility:: {boolean}
: true if the given element is visible, otherwise false

getVisibility () : {boolean}

This method retrieves a value indicating if the given element is visibile.

Returns:
: {boolean}
: true if the given element is visible, otherwise false

addClass (className) : {H.ui.base.Element}

This method adds a CSS class to the given UI element (if it is not already present).

Parameters:
className:: {string}
: The name of the CSS class to add

Returns:
: {H.ui.base.Element}
: The given UI element instance

removeClass (className) : {H.ui.base.Element}

This method removes a CSS class from the given UI element (if it is present).

Parameters:
className:: {string}
: The CSS class name to add

Returns:
: {H.ui.base.Element}
: The given UI element instance

Event Details

statechange: {H.util.Event}

This event is dispatched by the button when its state changes.

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