mirror of
https://github.com/gryf/pentadactyl-pm.git
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201 lines
7.3 KiB
JavaScript
201 lines
7.3 KiB
JavaScript
// Copyright (c) 2008-2010 Kris Maglione <maglione.k at Gmail>
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//
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// This work is licensed for reuse under an MIT license. Details are
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// given in the LICENSE.txt file included with this file.
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"use strict";
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/* Adds support for data: URIs with chrome privileges
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* and fragment identifiers.
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*
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* "chrome-data:" <content-type> [; <flag>]* "," [<data>]
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*
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* By Kris Maglione, ideas from Ed Anuff's nsChromeExtensionHandler.
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*/
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const Ci = Components.interfaces, Cc = Components.classes;
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Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
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const ioService = Cc["@mozilla.org/network/io-service;1"].getService(Ci.nsIIOService);
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const prefs = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefService)
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.getBranch("extensions.dactyl.");
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const systemPrincipal = Cc["@mozilla.org/systemprincipal;1"].getService(Ci.nsIPrincipal);
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function dataURL(type, data) "data:" + (type || "application/xml;encoding=UTF-8") + "," + escape(data);
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function makeChannel(url, orig) {
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if (url == null)
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return fakeChannel();
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if (typeof url === "function")
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url = dataURL.apply(null, url());
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let uri = ioService.newURI(url, null, null);
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let channel = ioService.newChannelFromURI(uri);
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channel.contentCharset = "UTF-8";
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channel.owner = systemPrincipal;
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channel.originalURI = orig;
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return channel;
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}
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function fakeChannel(orig) makeChannel("chrome://dactyl/content/does/not/exist", orig);
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function redirect(to, orig, time) {
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let html = <html><head><meta http-equiv="Refresh" content={(time || 0) + ";" + to}/></head></html>.toXMLString();
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return makeChannel(dataURL('text/html', html), ioService.newURI(to, null, null));
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}
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function Factory(clas) ({
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createInstance: function (outer, iid) {
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if (outer != null)
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throw Components.results.NS_ERROR_NO_AGGREGATION;
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if (!clas.instance)
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clas.instance = new clas();
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return clas.instance.QueryInterface(iid);
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}
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});
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function ChromeData() {}
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ChromeData.prototype = {
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contractID: "@mozilla.org/network/protocol;1?name=chrome-data",
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classID: Components.ID("{c1b67a07-18f7-4e13-b361-2edcc35a5a0d}"),
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classDescription: "Data URIs with chrome privileges",
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QueryInterface: XPCOMUtils.generateQI([Ci.nsIProtocolHandler]),
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_xpcom_factory: Factory(ChromeData),
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scheme: "chrome-data",
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defaultPort: -1,
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allowPort: function (port, scheme) false,
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protocolFlags: Ci.nsIProtocolHandler.URI_NORELATIVE
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| Ci.nsIProtocolHandler.URI_NOAUTH
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| Ci.nsIProtocolHandler.URI_IS_UI_RESOURCE,
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newURI: function (spec, charset, baseURI) {
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var uri = Components.classes["@mozilla.org/network/standard-url;1"]
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.createInstance(Components.interfaces.nsIStandardURL)
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.QueryInterface(Components.interfaces.nsIURI);
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uri.init(uri.URLTYPE_STANDARD, this.defaultPort, spec, charset, null);
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return uri;
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},
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newChannel: function (uri) {
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try {
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if (uri.scheme == this.scheme)
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return makeChannel(uri.spec.replace(/^.*?:\/*(.*)(?:#.*)?/, "data:$1"), uri);
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}
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catch (e) {}
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return fakeChannel();
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}
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};
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function Dactyl() {
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this.wrappedJSObject = this;
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this.HELP_TAGS = {};
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this.FILE_MAP = {};
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this.OVERLAY_MAP = {};
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this.pages = {};
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for each (let pref in ["appName", "fileExt", "host", "hostbin", "idName", "name"])
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this[pref] = prefs.getComplexValue(pref, Ci.nsISupportsString).data;
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this.addonID = this.name + "@dactyl.googlecode.com";
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}
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Dactyl.prototype = {
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contractID: "@mozilla.org/network/protocol;1?name=dactyl",
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classID: Components.ID("{9c8f2530-51c8-4d41-b356-319e0b155c44}"),
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classDescription: "Dactyl utility protocol",
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QueryInterface: XPCOMUtils.generateQI([Ci.nsIProtocolHandler]),
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_xpcom_factory: Factory(Dactyl),
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get version() prefs.getComplexValue("version", Ci.nsISupportsString).data,
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init: function (obj) {
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for each (let prop in ["HELP_TAGS", "FILE_MAP", "OVERLAY_MAP"]) {
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this[prop] = this[prop].constructor();
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for (let [k, v] in Iterator(obj[prop] || {}))
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this[prop][k] = v;
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}
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this.initialized = true;
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},
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scheme: "dactyl",
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defaultPort: -1,
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allowPort: function (port, scheme) false,
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protocolFlags: 0
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| Ci.nsIProtocolHandler.URI_IS_UI_RESOURCE
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| Ci.nsIProtocolHandler.URI_IS_LOCAL_RESOURCE,
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newURI: function (spec, charset, baseURI) {
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var uri = Cc["@mozilla.org/network/standard-url;1"]
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.createInstance(Ci.nsIStandardURL)
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.QueryInterface(Ci.nsIURI);
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uri.init(uri.URLTYPE_STANDARD, this.defaultPort, spec, charset, baseURI);
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return uri;
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},
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newChannel: function (uri) {
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try {
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if (uri.host != "content" && !("all" in this.FILE_MAP))
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return redirect(uri.spec, uri, 1);
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let path = decodeURIComponent(uri.path.replace(/^\/|#.*/g, ""));
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switch(uri.host) {
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case "content":
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return makeChannel(this.pages[path], uri);
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case "help":
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return makeChannel(this.FILE_MAP[path], uri);
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case "help-overlay":
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return makeChannel(this.OVERLAY_MAP[path], uri);
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case "help-tag":
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let tag = decodeURIComponent(uri.path.substr(1));
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if (tag in this.FILE_MAP)
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return redirect("dactyl://help/" + tag, uri);
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if (tag in this.HELP_TAGS)
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return redirect("dactyl://help/" + this.HELP_TAGS[tag] + "#" + tag, uri);
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}
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}
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catch (e) {}
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return fakeChannel(uri);
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}
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};
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function AboutHandler() {}
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AboutHandler.prototype = {
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classDescription: "About " + Dactyl.prototype.appName + " Page",
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classID: Components.ID("81495d80-89ee-4c36-a88d-ea7c4e5ac63f"),
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contractID: "@mozilla.org/network/protocol/about;1?what=" + Dactyl.prototype.name,
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QueryInterface: XPCOMUtils.generateQI([Ci.nsIAboutModule]),
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newChannel: function (uri) {
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let channel = Cc["@mozilla.org/network/io-service;1"].getService(Ci.nsIIOService)
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.newChannel("chrome://dactyl/content/about.xul", null, null);
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channel.originalURI = uri;
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return channel;
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},
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getURIFlags: function (uri) Ci.nsIAboutModule.ALLOW_SCRIPT,
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};
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// A hack to get information about interfaces.
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// Doesn't belong here.
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function Shim() {}
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Shim.prototype = {
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contractID: "@dactyl.googlecode.com/base/xpc-interface-shim",
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classID: Components.ID("{f4506a17-5b4d-4cd9-92d4-2eb4630dc388}"),
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classDescription: "XPCOM empty interface shim",
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QueryInterface: function (iid) {
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if (iid.equals(Ci.nsISecurityCheckedComponent))
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throw Components.results.NS_ERROR_NO_INTERFACE;
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return this;
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},
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getHelperForLanguage: function () null,
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getInterfaces: function (count) { count.value = 0; }
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};
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if (XPCOMUtils.generateNSGetFactory)
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const NSGetFactory = XPCOMUtils.generateNSGetFactory([AboutHandler, ChromeData, Dactyl, Shim]);
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else
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const NSGetModule = XPCOMUtils.generateNSGetModule([AboutHandler, ChromeData, Dactyl, Shim]);
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// vim: set fdm=marker sw=4 ts=4 et:
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