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https://gitlab.winehq.org/wine/wine-gecko.git
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111 lines
3.1 KiB
JavaScript
111 lines
3.1 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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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/**
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* PageThumbsProtocol.js
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*
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* This file implements the moz-page-thumb:// protocol and the corresponding
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* channel delivering cached thumbnails.
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*
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* URL structure:
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*
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* moz-page-thumb://thumbnail?url=http%3A%2F%2Fwww.mozilla.org%2F
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*
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* This URL requests an image for 'http://www.mozilla.org/'.
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*/
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"use strict";
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const Cu = Components.utils;
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const Cc = Components.classes;
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const Cr = Components.results;
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const Ci = Components.interfaces;
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Cu.import("resource:///modules/PageThumbs.jsm");
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "Services",
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"resource://gre/modules/Services.jsm");
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/**
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* Implements the thumbnail protocol handler responsible for moz-page-thumb: URIs.
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*/
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function Protocol() {
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}
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Protocol.prototype = {
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/**
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* The scheme used by this protocol.
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*/
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get scheme() PageThumbs.scheme,
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/**
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* The default port for this protocol (we don't support ports).
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*/
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get defaultPort() -1,
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/**
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* The flags specific to this protocol implementation.
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*/
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get protocolFlags() {
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return Ci.nsIProtocolHandler.URI_DANGEROUS_TO_LOAD |
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Ci.nsIProtocolHandler.URI_NORELATIVE |
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Ci.nsIProtocolHandler.URI_NOAUTH;
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},
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/**
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* Creates a new URI object that is suitable for loading by this protocol.
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* @param aSpec The URI string in UTF8 encoding.
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* @param aOriginCharset The charset of the document from which the URI originated.
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* @return The newly created URI.
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*/
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newURI: function Proto_newURI(aSpec, aOriginCharset) {
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let uri = Cc["@mozilla.org/network/simple-uri;1"].createInstance(Ci.nsIURI);
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uri.spec = aSpec;
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return uri;
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},
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/**
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* Constructs a new channel from the given URI for this protocol handler.
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* @param aURI The URI for which to construct a channel.
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* @return The newly created channel.
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*/
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newChannel: function Proto_newChannel(aURI) {
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let {url} = parseURI(aURI);
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let file = PageThumbsStorage.getFileForURL(url);
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let fileuri = Services.io.newFileURI(file);
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return Services.io.newChannelFromURI(fileuri);
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},
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/**
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* Decides whether to allow a blacklisted port.
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* @return Always false, we'll never allow ports.
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*/
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allowPort: function () false,
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classID: Components.ID("{5a4ae9b5-f475-48ae-9dce-0b4c1d347884}"),
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QueryInterface: XPCOMUtils.generateQI([Ci.nsIProtocolHandler])
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};
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this.NSGetFactory = XPCOMUtils.generateNSGetFactory([Protocol]);
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/**
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* Parses a given URI and extracts all parameters relevant to this protocol.
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* @param aURI The URI to parse.
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* @return The parsed parameters.
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*/
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function parseURI(aURI) {
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let {scheme, staticHost} = PageThumbs;
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let re = new RegExp("^" + scheme + "://" + staticHost + ".*?\\?");
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let query = aURI.spec.replace(re, "");
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let params = {};
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query.split("&").forEach(function (aParam) {
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let [key, value] = aParam.split("=").map(decodeURIComponent);
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params[key.toLowerCase()] = value;
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});
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return params;
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}
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