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