gecko-dev/dom/fm/nsIDOMFMRadio.idl

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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsISupports.idl"
#include "nsIDOMDOMRequest.idl"
[scriptable, uuid(1d0443f3-ac30-4f9e-a070-002bb20ce1e6)]
interface nsIDOMFMRadio : nsISupports {
/* Indicates if the FM radio is enabled. */
readonly attribute boolean enabled;
/* Indicates if the antenna is plugged and available. */
readonly attribute boolean antennaAvailable;
/**
* Current frequency in MHz.
* The value will be null if the FM radio is disabled.
*/
readonly attribute jsval frequency;
/* The upper bound of frequency in MHz. */
readonly attribute double frequencyUpperBound;
/* The lower bound of frequency in MHz. */
readonly attribute double frequencyLowerBound;
/**
* The channel width of the ranges of frequency, in MHz.
* Usually, the value is one of:
* - 0.05 MHz
* - 0.1 MHz
* - 0.2 MHz
*/
readonly attribute double channelWidth;
/* Fired when the FM radio is enabled. */
attribute nsIDOMEventListener onenabled;
/* Fired when the FM radio is disabled. */
attribute nsIDOMEventListener ondisabled;
/**
* Fired when the antenna becomes available or unavailable, i.e., fired when
* the antennaAvailable attribute changes.
*/
attribute nsIDOMEventListener onantennaavailablechange;
/* Fired when the FM radio's frequency is changed. */
attribute nsIDOMEventListener onfrequencychange;
/**
* Power the FM radio off.
* The disabled event will be fired if this request completes successfully.
*/
nsIDOMDOMRequest disable();
/**
* Power the FM radio on, and tune the radio to the given frequency in MHz.
* This will fail if the given frequency is out of range.
* The enabled event and frequencychange event will be fired if this request
* completes successfully.
*/
nsIDOMDOMRequest enable(in double frequency);
/**
* Tune the FM radio to the given frequency.
* This will fail if the given frequency is out of range.
*
* Note that the FM radio may not tuned to the exact frequency given. To get
* the frequency the radio is actually tuned to, wait for the request to fire
* onsucess (or wait for the frequencychange event to fire), and then read the
* frequency attribute.
*/
nsIDOMDOMRequest setFrequency(in double frequency);
/**
* Tell the FM radio to seek up to the next channel. If the frequency is
* successfully changed, the frequencychange event will be triggered.
*
* Only one seek is allowed at once:
* If the radio is seeking when the seekUp is called, onerror will be fired.
*/
nsIDOMDOMRequest seekUp();
/**
* Tell the FM radio to seek down to the next channel. If the frequency is
* successfully changed, the frequencychange event will be triggered.
*
* Only one seek is allowed at once:
* If the radio is seeking when the seekDown is called, onerror will be fired.
*/
nsIDOMDOMRequest seekDown();
/**
* Cancel the seek action.
* If the radio is not currently seeking up or down, onerror will be fired.
*/
nsIDOMDOMRequest cancelSeek();
/**
* These functions related to EventTarget are temporary hacks:
* - addEventListener
* - removeEventListener
* - handleEvent
*
* These will be removed by inheriting from nsIJSDOMEventTarget,
* see bug 731746.
*/
[optional_argc] void addEventListener(in DOMString type,
in nsIDOMEventListener listener,
[optional] in boolean useCapture,
[optional] in boolean wantsUntrusted);
void removeEventListener(in DOMString type,
in nsIDOMEventListener listener,
[optional] in boolean useCapture);
boolean dispatchEvent(in nsIDOMEvent evt) raises(DOMException);
};