83 lines
2.5 KiB
JavaScript
83 lines
2.5 KiB
JavaScript
/* 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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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module.metadata = {
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"stability": "unstable"
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};
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const { Cc, Ci, Cu } = require("chrome");
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const base64 = require("../base64");
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const IOService = Cc["@mozilla.org/network/io-service;1"].
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getService(Ci.nsIIOService);
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const { NetUtil } = Cu.import("resource://gre/modules/NetUtil.jsm");
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const FaviconService = Cc["@mozilla.org/browser/favicon-service;1"].
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getService(Ci.nsIFaviconService);
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const { deprecateFunction } = require("../util/deprecate");
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const PNG_B64 = "data:image/png;base64,";
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const DEF_FAVICON_URI = "chrome://mozapps/skin/places/defaultFavicon.png";
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let DEF_FAVICON = null;
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/**
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* Takes URI of the page and returns associated favicon URI.
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* If page under passed uri has no favicon then base64 encoded data URI of
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* default faveicon is returned.
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* @param {String} uri
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* @returns {String}
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*/
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exports.getFaviconURIForLocation = function getFaviconURIForLocation(uri) {
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let pageURI = NetUtil.newURI(uri);
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try {
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return FaviconService.getFaviconDataAsDataURL(
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FaviconService.getFaviconForPage(pageURI));
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}
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catch(e) {
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if (!DEF_FAVICON) {
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DEF_FAVICON = PNG_B64 +
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base64.encode(getChromeURIContent(DEF_FAVICON_URI));
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}
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return DEF_FAVICON;
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}
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}
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/**
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* Takes chrome URI and returns content under that URI.
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* @param {String} chromeURI
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* @returns {String}
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*/
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function getChromeURIContent(chromeURI) {
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let channel = IOService.newChannel(chromeURI, null, null);
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let input = channel.open();
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let stream = Cc["@mozilla.org/binaryinputstream;1"].
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createInstance(Ci.nsIBinaryInputStream);
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stream.setInputStream(input);
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let content = stream.readBytes(input.available());
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stream.close();
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input.close();
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return content;
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}
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exports.getChromeURIContent = deprecateFunction(getChromeURIContent,
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'getChromeURIContent is deprecated, ' +
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'please use require("sdk/net/url").readURI instead.'
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);
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/**
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* Creates a base-64 encoded ASCII string from a string of binary data.
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*/
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exports.base64Encode = deprecateFunction(base64.encode,
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'base64Encode is deprecated, ' +
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'please use require("sdk/base64").encode instead.'
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);
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/**
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* Decodes a string of data which has been encoded using base-64 encoding.
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*/
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exports.base64Decode = deprecateFunction(base64.decode,
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'base64Dencode is deprecated, ' +
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'please use require("sdk/base64").decode instead.'
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);
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