📄 feeditem.js
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# -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-# ***** BEGIN LICENSE BLOCK *****# Version: MPL 1.1/GPL 2.0/LGPL 2.1## The contents of this file are subject to the Mozilla Public License Version# 1.1 (the "License"); you may not use this file except in compliance with# the License. You may obtain a copy of the License at# http://www.mozilla.org/MPL/## Software distributed under the License is distributed on an "AS IS" basis,# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License# for the specific language governing rights and limitations under the# License.## The Original Code is an RSS Feed Item## The Initial Developer of the Original Code is# The Mozilla Foundation.# Portions created by the Initial Developer are Copyright (C) 2004# the Initial Developer. All Rights Reserved.## Contributor(s):## Alternatively, the contents of this file may be used under the terms of# either the GNU General Public License Version 2 or later (the "GPL"), or# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),# in which case the provisions of the GPL or the LGPL are applicable instead# of those above. If you wish to allow use of your version of this file only# under the terms of either the GPL or the LGPL, and not to allow others to# use your version of this file under the terms of the MPL, indicate your# decision by deleting the provisions above and replace them with the notice# and other provisions required by the GPL or the LGPL. If you do not delete# the provisions above, a recipient may use your version of this file under# the terms of any one of the MPL, the GPL or the LGPL.## ***** END LICENSE BLOCK ***** */// Handy conversion values.const HOURS_TO_MINUTES = 60;const MINUTES_TO_SECONDS = 60;const SECONDS_TO_MILLISECONDS = 1000;const MINUTES_TO_MILLISECONDS = MINUTES_TO_SECONDS * SECONDS_TO_MILLISECONDS;const HOURS_TO_MILLISECONDS = HOURS_TO_MINUTES * MINUTES_TO_MILLISECONDS;const MSG_FLAG_NEW = 0x10000;const ENCLOSURE_BOUNDARY_PREFIX = "--------------"; // 14 dashesconst ENCLOSURE_HEADER_BOUNDARY_PREFIX = "------------"; // 12 dashesconst MESSAGE_TEMPLATE = "\n\<html>\n\ <head>\n\ <title>%TITLE%</title>\n\ <base href=\"%BASE%\">\n\ <style type=\"text/css\">\n\ %STYLE%\n\ </style>\n\ </head>\n\ <body>\n\ %CONTENT_TEMPLATE%\n\ </body>\n\</html>\n\";const REMOTE_CONTENT_TEMPLATE = "\n\ <iframe id =\"_mailrssiframe\" src=\"%URL%\">\n\ %DESCRIPTION%\n\ </iframe>\n\";const REMOTE_STYLE = "\n\ body {\n\ margin: 0;\n\ border: none;\n\ padding: 0;\n\ }\n\ iframe {\n\ position: fixed;\n\ top: 0;\n\ left: 0;\n\ width: 100%;\n\ height: 100%;\n\ border: none;\n\ }\n\";// Unlike remote content, which is locked within a fixed position iframe,// local content goes is positioned according to the normal rules of flow.// The problem with this is that the message pane itself provides a scrollbar// if necessary, and that scrollbar appears next to the toolbar as well as// the content being scrolled. The solution is to lock local content within// a fixed position div and set its overflow property to auto so that the div// itself provides the scrollbar. Unfortunately we can't do that because of// Mozilla bug 97283, which makes it hard to scroll an auto overflow div.const LOCAL_CONTENT_TEMPLATE = "\n\ %CONTENT%\n\";// no local style overrides at this timeconst LOCAL_STYLE = "\n";function FeedItem() { this.mDate = new Date().toString(); this.mUnicodeConverter = Components.classes["@mozilla.org/intl/scriptableunicodeconverter"] .createInstance(Components.interfaces.nsIScriptableUnicodeConverter);}FeedItem.prototype = { isStoredWithId: false, // we currently only do this for IETF Atom. RSS2 with GUIDs should do this as well. xmlContentBase: null, // only for IETF Atom id: null, feed: null, description: null, content: null, enclosure: null, // we currently only support one enclosure per feed item... title: "(no subject)", // TO DO: this needs to be localized author: "anonymous", mURL: null, characterSet: "", get url() { return this.mURL; }, set url(aVal) { var uri = Components.classes["@mozilla.org/network/standard-url;1"].getService(Components.interfaces["nsIStandardURL"]); uri.init(1, 80, aVal, null, null); var uri = uri.QueryInterface(Components.interfaces.nsIURI); this.mURL = uri.spec; }, get date() { return this.mDate; }, set date (aVal) { this.mDate = aVal; }, get identity () { return this.feed.name + ": " + this.title + " (" + this.id + ")" }, get messageID() { var messageID = this.id || this.mURL || this.title; // Escape occurrences of message ID meta characters <, >, and @. messageID.replace(/</g, "%3C"); messageID.replace(/>/g, "%3E"); messageID.replace(/@/g, "%40"); messageID = messageID + "@" + "localhost.localdomain"; return messageID; }, get itemUniqueURI() { var theURI; if(this.isStoredWithId && this.id) theURI = "urn:" + this.id; else theURI = this.mURL || ("urn:" + this.id); return theURI; }, get contentBase() { if(this.xmlContentBase) return this.xmlContentBase else return this.mURL; }, store: function() { this.mUnicodeConverter.charset = this.characterSet; if (this.isStored()) debug(this.identity + " already stored; ignoring"); else if (this.content) { debug(this.identity + " has content; storing"); var content = MESSAGE_TEMPLATE; content = content.replace(/%CONTENT_TEMPLATE%/, LOCAL_CONTENT_TEMPLATE); content = content.replace(/%STYLE%/, LOCAL_STYLE); content = content.replace(/%TITLE%/, this.title); content = content.replace(/%BASE%/, this.contentBase); content = content.replace(/%URL%/g, this.mURL); content = content.replace(/%CONTENT%/, this.content); this.content = content; // XXX store it elsewhere, f.e. this.page this.writeToFolder(); } else if (this.feed.quickMode) { debug(this.identity + " in quick mode; storing"); this.content = this.description || this.title; var content = MESSAGE_TEMPLATE; content = content.replace(/%CONTENT_TEMPLATE%/, LOCAL_CONTENT_TEMPLATE); content = content.replace(/%STYLE%/, LOCAL_STYLE); content = content.replace(/%BASE%/, this.contentBase); content = content.replace(/%TITLE%/, this.title); content = content.replace(/%URL%/g, this.mURL); content = content.replace(/%CONTENT%/, this.content); this.content = content; // XXX store it elsewhere, f.e. this.page this.writeToFolder(); } else { //debug(this.identity + " needs content; downloading"); debug(this.identity + " needs content; creating and storing"); var content = MESSAGE_TEMPLATE; content = content.replace(/%CONTENT_TEMPLATE%/, REMOTE_CONTENT_TEMPLATE); content = content.replace(/%STYLE%/, REMOTE_STYLE); content = content.replace(/%TITLE%/, this.title); content = content.replace(/%BASE%/, this.contentBase); content = content.replace(/%URL%/g, this.mURL); content = content.replace(/%DESCRIPTION%/, this.description || this.title); this.content = content; // XXX store it elsewhere, f.e. this.page this.writeToFolder(); } }, isStored: function() { // Checks to see if the item has already been stored in its feed's message folder. debug(this.identity + " checking to see if stored"); var server = this.feed.server; var folder = this.feed.folder; if (!folder) { debug(this.feed.name + " folder doesn't exist; creating"); debug("creating " + this.feed.name + "as child of " + server.rootMsgFolder + "\n"); server.rootMsgFolder.createSubfolder(this.feed.name, null /* supposed to be a msg window */); folder = server.rootMsgFolder.FindSubFolder(this.feed.name);⌨️ 快捷键说明
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