Mercurial > snowl
annotate modules/feed.js @ 260:f88055405aee
make all messages received in the same refresh have the same received datetime, and support multiple sort properties when sorting a collection
| author | Myk Melez <myk@mozilla.org> |
|---|---|
| date | Mon, 25 Aug 2008 17:33:13 -0700 |
| parents | 842cc8be67d2 |
| children | 54b59324bd71 |
| rev | line source |
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1 /* ***** BEGIN LICENSE BLOCK ***** |
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2 * Version: MPL 1.1/GPL 2.0/LGPL 2.1 |
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3 * |
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4 * The contents of this file are subject to the Mozilla Public License Version |
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5 * 1.1 (the "License"); you may not use this file except in compliance with |
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6 * the License. You may obtain a copy of the License at |
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7 * http://www.mozilla.org/MPL/ |
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8 * |
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9 * Software distributed under the License is distributed on an "AS IS" basis, |
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10 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License |
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11 * for the specific language governing rights and limitations under the |
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12 * License. |
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13 * |
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14 * The Original Code is Snowl. |
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15 * |
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16 * The Initial Developer of the Original Code is Mozilla. |
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17 * Portions created by the Initial Developer are Copyright (C) 2008 |
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18 * the Initial Developer. All Rights Reserved. |
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19 * |
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20 * Contributor(s): |
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21 * Myk Melez <myk@mozilla.org> |
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22 * |
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23 * Alternatively, the contents of this file may be used under the terms of |
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24 * either the GNU General Public License Version 2 or later (the "GPL"), or |
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25 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), |
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26 * in which case the provisions of the GPL or the LGPL are applicable instead |
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27 * of those above. If you wish to allow use of your version of this file only |
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28 * under the terms of either the GPL or the LGPL, and not to allow others to |
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29 * use your version of this file under the terms of the MPL, indicate your |
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30 * decision by deleting the provisions above and replace them with the notice |
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31 * and other provisions required by the GPL or the LGPL. If you do not delete |
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32 * the provisions above, a recipient may use your version of this file under |
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33 * the terms of any one of the MPL, the GPL or the LGPL. |
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34 * |
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35 * ***** END LICENSE BLOCK ***** */ |
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36 |
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37 EXPORTED_SYMBOLS = ["SnowlFeed"]; |
| 14 | 38 |
| 39 const Cc = Components.classes; | |
| 40 const Ci = Components.interfaces; | |
| 41 const Cr = Components.results; | |
| 42 const Cu = Components.utils; | |
| 43 | |
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44 // modules that come with Firefox |
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45 Cu.import("resource://gre/modules/XPCOMUtils.jsm"); |
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46 Cu.import("resource://gre/modules/ISO8601DateUtils.jsm"); |
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47 |
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48 // modules that should come with Firefox |
| 114 | 49 Cu.import("resource://snowl/modules/log4moz.js"); |
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50 Cu.import("resource://snowl/modules/Observers.js"); |
| 114 | 51 Cu.import("resource://snowl/modules/URI.js"); |
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52 |
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53 // Snowl-specific modules |
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54 Cu.import("resource://snowl/modules/datastore.js"); |
| 114 | 55 Cu.import("resource://snowl/modules/source.js"); |
| 164 | 56 Cu.import("resource://snowl/modules/identity.js"); |
| 114 | 57 |
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58 // FIXME: factor this out into a common file. |
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59 const PART_TYPE_CONTENT = 1; |
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60 const PART_TYPE_SUMMARY = 2; |
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61 |
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62 // nsIFeedTextConstruct::type to media type mappings. |
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63 const mediaTypes = { html: "text/html", |
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64 xhtml: "application/xhtml+xml", |
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65 text: "text/plain" }; |
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66 |
| 118 | 67 /** |
| 68 * Convert a string to an array of character codes. | |
| 69 * | |
| 70 * @param string {string} the string to convert | |
| 71 * @returns {array} the array of character codes | |
| 72 */ | |
| 73 function stringToArray(string) { | |
| 74 var array = []; | |
| 75 for (let i = 0; i < string.length; i++) | |
| 76 array.push(string.charCodeAt(i)); | |
| 77 return array; | |
| 78 } | |
| 79 | |
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80 function SnowlFeed(aID, aName, aMachineURI, aHumanURI, aLastRefreshed, aImportance) { |
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81 // Call the superclass's constructor to initialize the new instance. |
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82 SnowlSource.call(this, aID, aName, aMachineURI, aHumanURI, aLastRefreshed, aImportance); |
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83 } |
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84 |
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85 SnowlFeed.prototype = { |
| 205 | 86 constructor: SnowlFeed, |
| 87 | |
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88 __proto__: SnowlSource.prototype, |
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89 |
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90 _log: Log4Moz.Service.getLogger("Snowl.Feed"), |
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91 |
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92 // If we prompt the user to authenticate, and the user asks us to remember |
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93 // their password, we store the nsIAuthInformation in this property until |
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94 // the request succeeds, at which point we store it with the login manager. |
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95 _authInfo: null, |
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96 |
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97 // Observer Service |
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98 get _obsSvc() { |
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99 let obsSvc = Cc["@mozilla.org/observer-service;1"]. |
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100 getService(Ci.nsIObserverService); |
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101 this.__defineGetter__("_obsSvc", function() { return obsSvc }); |
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102 return this._obsSvc; |
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103 }, |
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104 |
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105 // nsISupports |
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106 |
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107 QueryInterface: XPCOMUtils.generateQI([Ci.nsIAuthPrompt2]), |
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108 |
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109 // nsIInterfaceRequestor |
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110 |
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111 getInterface: function(iid) { |
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112 return this.QueryInterface(iid); |
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113 }, |
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114 |
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115 // nsIAuthPrompt2 |
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116 |
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117 _logins: null, |
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118 _loginIndex: 0, |
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119 |
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120 promptAuth: function(channel, level, authInfo) { |
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121 // Check saved logins before prompting the user. We get them |
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122 // from the login manager and try each in turn until one of them works |
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123 // or we run out of them. |
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124 if (!this._logins) { |
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125 let lm = Cc["@mozilla.org/login-manager;1"].getService(Ci.nsILoginManager); |
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126 // XXX Should we be using channel.URI.prePath in case the old URI |
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127 // redirects us to a new one at a different hostname? |
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128 this._logins = lm.findLogins({}, this.machineURI.prePath, null, authInfo.realm); |
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129 } |
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130 |
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131 let login = this._logins[this._loginIndex]; |
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132 if (login) { |
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133 authInfo.username = login.username; |
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134 authInfo.password = login.password; |
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135 ++this._loginIndex; |
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136 return true; |
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137 } |
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138 |
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139 // If we've made it this far, none of the saved logins worked, so we prompt |
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140 // the user to provide one. |
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141 let args = Cc["@mozilla.org/supports-array;1"].createInstance(Ci.nsISupportsArray); |
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142 args.AppendElement({ wrappedJSObject: this }); |
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143 args.AppendElement(authInfo); |
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144 |
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145 // |result| is how the dialog passes information back to us. It sets two |
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146 // properties on the object: |proceed|, which we return from this function, |
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147 // and which determines whether or not authentication can proceed using |
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148 // the values entered by the user; and |remember|, which determines whether |
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149 // or not we save the user's login with the login manager once the request |
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150 // succeeds. |
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151 let result = {}; |
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152 args.AppendElement({ wrappedJSObject: result }); |
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153 |
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154 let ww = Cc["@mozilla.org/embedcomp/window-watcher;1"].getService(Ci.nsIWindowWatcher); |
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155 ww.openWindow(null, |
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156 // XXX Should we use commonDialog.xul? |
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157 "chrome://snowl/content/login.xul", |
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158 null, |
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159 "chrome,centerscreen,dialog,modal", |
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160 args); |
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161 |
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162 if (result.remember) |
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163 this._authInfo = authInfo; |
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164 |
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165 return result.proceed; |
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166 }, |
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167 |
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168 asyncPromptAuth: function() { |
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169 throw Cr.NS_ERROR_NOT_IMPLEMENTED; |
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170 }, |
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171 |
| 116 | 172 refresh: function() { |
| 14 | 173 let request = Cc["@mozilla.org/xmlextras/xmlhttprequest;1"].createInstance(); |
| 174 | |
| 175 request.QueryInterface(Ci.nsIDOMEventTarget); | |
| 176 let t = this; | |
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177 request.addEventListener("load", function(e) { t.onRefreshLoad(e) }, false); |
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178 request.addEventListener("error", function(e) { t.onRefreshError(e) }, false); |
| 14 | 179 |
| 180 request.QueryInterface(Ci.nsIXMLHttpRequest); | |
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181 |
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182 // The feed processor is going to parse the XML, so override the MIME type |
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183 // in order to turn off parsing by XMLHttpRequest itself. |
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184 request.overrideMimeType("text/plain"); |
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185 |
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186 request.open("GET", this.machineURI.spec, true); |
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187 |
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188 // Register a listener for notification callbacks so we handle authentication. |
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189 request.channel.notificationCallbacks = this; |
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190 |
| 14 | 191 request.send(null); |
| 192 }, | |
| 193 | |
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194 onRefreshLoad: function(aEvent) { |
| 14 | 195 let request = aEvent.target; |
| 196 | |
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197 // If the request failed, let the error handler handle it. |
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198 // XXX Do we need this? Don't such failures call the error handler directly? |
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199 if (request.status < 200 || request.status > 299) { |
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200 this.onRefreshError(aEvent); |
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201 return; |
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202 } |
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203 |
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204 // XXX What's the right way to handle this? |
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205 if (request.responseText.length == 0) { |
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206 this.onRefreshError(aEvent); |
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207 return; |
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208 } |
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209 |
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210 // _authInfo only gets set if we prompted the user to authenticate |
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211 // and the user checked the "remember password" box. Since we're here, |
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212 // it means the request succeeded, so we save the login. |
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213 if (this._authInfo) |
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214 this._saveLogin(); |
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215 |
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216 let parser = Cc["@mozilla.org/feed-processor;1"]. |
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217 createInstance(Ci.nsIFeedProcessor); |
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218 parser.listener = { t: this, handleResult: function(r) { this.t.onRefreshResult(r) } }; |
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219 parser.parseFromString(request.responseText, request.channel.URI); |
| 14 | 220 }, |
| 221 | |
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222 onRefreshError: function(aEvent) { |
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223 let request = aEvent.target; |
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224 |
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225 // Sometimes an attempt to retrieve status text throws NS_ERROR_NOT_AVAILABLE |
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226 let statusText = ""; |
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227 try { |
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228 statusText = request.statusText; |
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229 } |
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230 catch(ex) {} |
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231 |
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232 this._log.error("onRefreshError: " + request.status + " (" + statusText + ")"); |
| 14 | 233 }, |
| 234 | |
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235 onRefreshResult: function(aResult) { |
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236 Observers.notify(this, "snowl:subscribe:get:start", null); |
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237 |
| 14 | 238 // Now that we know we successfully downloaded the feed and obtained |
| 239 // a result from it, update the "last refreshed" timestamp. | |
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240 this.lastRefreshed = new Date(); |
| 14 | 241 |
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242 let feed = aResult.doc.QueryInterface(Components.interfaces.nsIFeed); |
| 14 | 243 |
| 118 | 244 let currentMessageIDs = []; |
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245 let messagesChanged = false; |
| 14 | 246 |
| 247 SnowlDatastore.dbConnection.beginTransaction(); | |
| 248 try { | |
| 249 for (let i = 0; i < feed.items.length; i++) { | |
| 250 let entry = feed.items.queryElementAt(i, Ci.nsIFeedEntry); | |
| 251 //entry.QueryInterface(Ci.nsIFeedContainer); | |
| 252 | |
| 253 // Figure out the ID for the entry, then check if the entry has already | |
| 254 // been retrieved. If we can't figure out the entry's ID, then we skip | |
| 255 // the entry, since its ID is the only way for us to know whether or not | |
| 256 // it has already been retrieved. | |
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257 let externalID; |
| 14 | 258 try { |
| 118 | 259 externalID = entry.id || this._generateID(entry); |
| 14 | 260 } |
| 261 catch(ex) { | |
| 118 | 262 this._log.warn("couldn't retrieve a message: " + ex); |
| 14 | 263 continue; |
| 264 } | |
| 265 | |
| 118 | 266 let internalID = this._getInternalIDForExternalID(externalID); |
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267 if (internalID) { |
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268 currentMessageIDs.push(internalID); |
| 118 | 269 continue; |
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270 } |
| 14 | 271 |
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272 messagesChanged = true; |
| 118 | 273 this._log.info(this.name + " adding message " + externalID); |
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274 internalID = this._addMessage(feed, entry, externalID, this.lastRefreshed); |
| 118 | 275 currentMessageIDs.push(internalID); |
| 14 | 276 } |
| 277 | |
| 278 // Update the current flag. | |
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279 // XXX Should this affect whether or not messages have changed? |
| 14 | 280 SnowlDatastore.dbConnection.executeSimpleSQL("UPDATE messages SET current = 0 WHERE sourceID = " + this.id); |
| 118 | 281 SnowlDatastore.dbConnection.executeSimpleSQL("UPDATE messages SET current = 1 WHERE id IN (" + currentMessageIDs.join(", ") + ")"); |
| 14 | 282 |
| 283 SnowlDatastore.dbConnection.commitTransaction(); | |
| 284 } | |
| 285 catch(ex) { | |
| 286 SnowlDatastore.dbConnection.rollbackTransaction(); | |
| 287 throw ex; | |
| 288 } | |
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289 |
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290 if (messagesChanged) |
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291 this._obsSvc.notifyObservers(null, "messages:changed", null); |
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292 |
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293 Observers.notify(this, "snowl:subscribe:get:end", null); |
| 14 | 294 }, |
| 295 | |
| 296 /** | |
| 297 * Add a message to the datastore for the given feed entry. | |
| 298 * | |
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299 * @param aFeed {nsIFeed} the feed |
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300 * @param aEntry {nsIFeedEntry} the entry |
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301 * @param aExternalID {string} the external ID of the entry |
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302 * @param aReceived {Date} when the message was received |
| 14 | 303 */ |
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304 _addMessage: function(aFeed, aEntry, aExternalID, aReceived) { |
| 164 | 305 let authorID = null; |
| 306 let authors = (aEntry.authors.length > 0) ? aEntry.authors | |
| 307 : (aFeed.authors.length > 0) ? aFeed.authors | |
| 308 : null; | |
| 309 if (authors && authors.length > 0) { | |
| 310 let author = authors.queryElementAt(0, Ci.nsIFeedPerson); | |
| 311 // The external ID for an author is her email address, if provided | |
| 312 // (many feeds don't); otherwise it's her name. For the name, on the | |
| 313 // other hand, we use the name, if provided, but fall back to the | |
| 314 // email address if a name is not provided (which it probably was). | |
| 315 let externalID = author.email || author.name; | |
| 316 let name = author.name || author.email; | |
| 317 | |
| 318 // Get an existing identity or create a new one. Creating an identity | |
| 319 // automatically creates a person record with the provided name. | |
| 320 identity = SnowlIdentity.get(this.id, externalID) || | |
| 321 SnowlIdentity.create(this.id, externalID, name); | |
| 322 authorID = identity.personID; | |
| 14 | 323 } |
| 324 | |
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325 // Pick a timestamp, which is one of (by priority, high to low): |
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326 // 1. when the entry was last updated; |
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327 // 2. when the entry was published; |
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328 // 3. the Dublin Core timestamp associated with the entry; |
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329 // XXX Should we separately record when we added the entry so that the user |
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330 // can sort in the "order received" and view "when received" separately from |
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331 // "when published/updated"? |
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332 let timestamp = aEntry.updated ? new Date(aEntry.updated) : |
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333 aEntry.published ? new Date(aEntry.published) : |
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334 ISO8601DateUtils.parse(aEntry.get("dc:date")); |
| 14 | 335 |
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336 // FIXME: handle titles that contain markup or are missing. |
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337 let messageID = this.addSimpleMessage(this.id, aExternalID, |
| 164 | 338 aEntry.title.text, authorID, |
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339 timestamp, aReceived, aEntry.link); |
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340 |
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341 // Add parts |
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342 if (aEntry.content) { |
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343 this.addPart(messageID, PART_TYPE_CONTENT, aEntry.content.text, |
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344 (aEntry.content.base ? aEntry.content.base.spec : null), |
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345 aEntry.content.lang, mediaTypes[aEntry.content.type]); |
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346 } |
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347 |
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348 if (aEntry.summary) { |
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349 this.addPart(messageID, PART_TYPE_SUMMARY, aEntry.summary.text, |
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350 (aEntry.summary.base ? aEntry.summary.base.spec : null), |
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351 aEntry.summary.lang, mediaTypes[aEntry.summary.type]); |
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352 } |
| 14 | 353 |
| 354 // Add metadata. | |
| 355 let fields = aEntry.QueryInterface(Ci.nsIFeedContainer). | |
| 356 fields.QueryInterface(Ci.nsIPropertyBag).enumerator; | |
| 357 while (fields.hasMoreElements()) { | |
| 358 let field = fields.getNext().QueryInterface(Ci.nsIProperty); | |
| 359 | |
| 164 | 360 // FIXME: create people records for these. |
| 14 | 361 if (field.name == "authors") { |
| 362 let values = field.value.QueryInterface(Ci.nsIArray).enumerate(); | |
| 363 while (values.hasMoreElements()) { | |
| 364 let value = values.getNext().QueryInterface(Ci.nsIFeedPerson); | |
| 365 // FIXME: store people records in a separate table with individual | |
| 366 // columns for each person attribute (i.e. name, email, url)? | |
| 118 | 367 this._addMetadatum(messageID, |
| 368 "atom:author", | |
| 369 value.name && value.email ? value.name + "<" + value.email + ">" | |
| 370 : value.name ? value.name : value.email); | |
| 14 | 371 } |
| 372 } | |
| 373 | |
| 374 else if (field.name == "links") { | |
| 375 let values = field.value.QueryInterface(Ci.nsIArray).enumerate(); | |
| 376 while (values.hasMoreElements()) { | |
| 377 let value = values.getNext().QueryInterface(Ci.nsIPropertyBag2); | |
| 378 // FIXME: store link records in a separate table with individual | |
| 379 // colums for each link attribute (i.e. href, type, rel, title)? | |
| 118 | 380 this._addMetadatum(messageID, |
| 381 "atom:link_" + value.get("rel"), | |
| 382 value.get("href")); | |
| 14 | 383 } |
| 384 } | |
| 385 | |
| 386 // For some reason, the values of certain simple fields (like RSS2 guid) | |
| 387 // are property bags containing the value instead of the value itself. | |
| 388 // For those, we need to unwrap the extra layer. This strange behavior | |
| 389 // has been filed as bug 427907. | |
| 390 else if (typeof field.value == "object") { | |
| 391 if (field.value instanceof Ci.nsIPropertyBag2) { | |
| 392 let value = field.value.QueryInterface(Ci.nsIPropertyBag2).get(field.name); | |
| 118 | 393 this._addMetadatum(messageID, field.name, value); |
| 14 | 394 } |
| 395 else if (field.value instanceof Ci.nsIArray) { | |
| 396 let values = field.value.QueryInterface(Ci.nsIArray).enumerate(); | |
| 397 while (values.hasMoreElements()) { | |
| 164 | 398 // FIXME: values might not always have this interface. |
| 14 | 399 let value = values.getNext().QueryInterface(Ci.nsIPropertyBag2); |
| 118 | 400 this._addMetadatum(messageID, field.name, value.get(field.name)); |
| 14 | 401 } |
| 402 } | |
| 403 } | |
| 404 | |
| 405 else | |
| 118 | 406 this._addMetadatum(messageID, field.name, field.value); |
| 14 | 407 } |
| 408 | |
| 409 return messageID; | |
| 410 }, | |
| 411 | |
| 412 /** | |
| 413 * Given an entry, generate an ID for it based on a hash of its link, | |
| 414 * published, and title attributes. Useful for uniquely identifying entries | |
| 415 * that don't provide their own IDs. | |
| 416 * | |
| 417 * @param entry {nsIFeedEntry} the entry for which to generate an ID | |
| 418 * @returns {string} an ID for the entry | |
| 419 */ | |
| 118 | 420 _generateID: function(entry) { |
| 14 | 421 let hasher = Cc["@mozilla.org/security/hash;1"]. |
| 422 createInstance(Ci.nsICryptoHash); | |
| 423 hasher.init(Ci.nsICryptoHash.SHA1); | |
| 118 | 424 let identity = stringToArray(entry.link.spec + entry.published + entry.title.text); |
| 14 | 425 hasher.update(identity, identity.length); |
| 426 return "urn:" + hasher.finish(true); | |
| 427 }, | |
| 428 | |
| 429 // FIXME: Make the rest of this stuff be part of a superclass from which | |
| 430 // this class is derived. | |
| 431 | |
| 432 /** | |
| 433 * Get the internal ID of the message with the given external ID. | |
| 434 * | |
| 435 * @param aExternalID {string} | |
| 436 * the external ID of the message | |
| 437 * | |
| 438 * @returns {number} | |
| 439 * the internal ID of the message, or undefined if the message | |
| 440 * doesn't exist | |
| 441 */ | |
| 118 | 442 _getInternalIDForExternalID: function(aExternalID) { |
| 14 | 443 return SnowlDatastore.selectInternalIDForExternalID(aExternalID); |
| 444 }, | |
| 445 | |
| 446 /** | |
| 447 * Add a message with a single part to the datastore. | |
| 448 * | |
| 449 * @param aSourceID {integer} the record ID of the message source | |
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450 * @param aExternalID {string} the external ID of the message |
| 14 | 451 * @param aSubject {string} the title of the message |
| 164 | 452 * @param aAuthorID {string} the author of the message |
| 14 | 453 * @param aTimestamp {Date} the date/time at which the message was sent |
| 454 * @param aLink {nsIURI} a link to the content of the message, | |
| 455 * if the content is hosted on a server | |
| 456 * | |
| 457 * @returns {integer} the internal ID of the newly-created message | |
| 458 */ | |
| 164 | 459 addSimpleMessage: function(aSourceID, aExternalID, aSubject, aAuthorID, |
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460 aTimestamp, aReceived, aLink) { |
| 14 | 461 // Convert the link to its string spec, which is how we store it |
| 462 // in the datastore. | |
| 463 let link = aLink ? aLink.spec : null; | |
| 464 | |
| 465 let messageID = | |
| 164 | 466 SnowlDatastore.insertMessage(aSourceID, aExternalID, aSubject, aAuthorID, |
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467 aTimestamp, aReceived, link); |
| 14 | 468 |
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469 return messageID; |
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470 }, |
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471 |
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472 get _addPartStatement() { |
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473 let statement = SnowlDatastore.createStatement( |
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474 "INSERT INTO parts(messageID, partType, content, baseURI, languageCode, mediaType) \ |
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475 VALUES (:messageID, :partType, :content, :baseURI, :languageCode, :mediaType)" |
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476 ); |
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477 this.__defineGetter__("_addPartStatement", function() { return statement }); |
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478 return this._addPartStatement; |
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479 }, |
| 14 | 480 |
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481 addPart: function(aMessageID, aPartType, aContent, aBaseURI, aLanguageCode, |
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482 aMediaType) { |
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483 this._addPartStatement.params.messageID = aMessageID; |
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484 this._addPartStatement.params.partType = aPartType; |
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485 this._addPartStatement.params.content = aContent; |
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486 this._addPartStatement.params.baseURI = aBaseURI; |
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487 this._addPartStatement.params.languageCode = aLanguageCode; |
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488 this._addPartStatement.params.mediaType = aMediaType; |
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489 this._addPartStatement.execute(); |
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490 |
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491 return SnowlDatastore.dbConnection.lastInsertRowID; |
| 14 | 492 }, |
| 493 | |
| 118 | 494 _addMetadatum: function(aMessageID, aAttributeName, aValue) { |
| 14 | 495 // FIXME: speed this up by caching the list of known attributes. |
| 496 let attributeID = SnowlDatastore.selectAttributeID(aAttributeName) | |
| 497 || SnowlDatastore.insertAttribute(aAttributeName); | |
| 498 SnowlDatastore.insertMetadatum(aMessageID, attributeID, aValue); | |
| 499 }, | |
| 500 | |
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501 subscribe: function(callback) { |
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502 Observers.notify(this, "snowl:subscribe:connect:start", null); |
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503 |
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504 this._subscribeCallback = callback; |
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505 |
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506 this._log.info("subscribing to " + this.name + " <" + this.machineURI.spec + ">"); |
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507 |
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508 let request = Cc["@mozilla.org/xmlextras/xmlhttprequest;1"].createInstance(); |
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509 |
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510 request = request.QueryInterface(Ci.nsIDOMEventTarget); |
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511 |
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512 let t = this; |
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513 request.addEventListener("load", function(e) { t.onSubscribeLoad(e) }, false); |
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514 request.addEventListener("error", function(e) { t.onSubscribeError(e) }, false); |
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515 |
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516 request = request.QueryInterface(Ci.nsIXMLHttpRequest); |
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517 |
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518 // The feed processor is going to parse the XML, so override the MIME type |
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519 // in order to turn off parsing by XMLHttpRequest itself. |
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520 request.overrideMimeType("text/plain"); |
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521 |
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522 request.open("GET", this.machineURI.spec, true); |
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523 |
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524 // Register a listener for notification callbacks so we handle authentication. |
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525 request.channel.notificationCallbacks = this; |
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526 |
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527 request.send(null); |
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528 }, |
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529 |
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530 onSubscribeLoad: function(aEvent) { |
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531 let request = aEvent.target; |
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532 |
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533 // If the request failed, let the error handler handle it. |
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534 // XXX Do we need this? Don't such failures call the error handler directly? |
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535 if (request.status < 200 || request.status > 299) { |
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536 this.onSubscribeError(aEvent); |
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537 return; |
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538 } |
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539 |
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540 // XXX What's the right way to handle this? |
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541 if (request.responseText.length == 0) { |
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542 this.onRefreshError(aEvent); |
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543 return; |
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544 } |
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545 |
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546 Observers.notify(this, "snowl:subscribe:connect:end", request.status); |
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547 |
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548 // _authInfo only gets set if we prompted the user to authenticate |
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549 // and the user checked the "remember password" box. Since we're here, |
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550 // it means the request succeeded, so we save the login. |
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551 if (this._authInfo) |
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552 this._saveLogin(); |
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553 |
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554 let parser = Cc["@mozilla.org/feed-processor;1"]. |
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555 createInstance(Ci.nsIFeedProcessor); |
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556 parser.listener = { t: this, handleResult: function(r) { this.t.onSubscribeResult(r) } }; |
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557 parser.parseFromString(request.responseText, request.channel.URI); |
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558 }, |
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559 |
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560 onSubscribeError: function(aEvent) { |
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561 let request = aEvent.target; |
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562 this._log.error("onSubscribeError: " + request.status + " (" + request.statusText + ")"); |
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563 Observers.notify(this, "snowl:subscribe:connect:end", request.status); |
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564 if (this._subscribeCallback) |
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565 this._subscribeCallback(); |
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566 }, |
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567 |
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568 onSubscribeResult: function(aResult) { |
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569 try { |
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570 let feed = aResult.doc.QueryInterface(Components.interfaces.nsIFeed); |
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571 |
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572 // Extract the name (if we don't already have one) and human URI from the feed. |
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573 if (!this.name) |
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574 this.name = feed.title.plainText(); |
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575 this.humanURI = feed.link; |
| 205 | 576 |
| 577 this.persist(); | |
| 578 | |
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579 // Let observers know about the new source. |
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580 this._obsSvc.notifyObservers(null, "sources:changed", null); |
| 205 | 581 |
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582 // Refresh the feed to import all its items. |
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583 this.onRefreshResult(aResult); |
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584 } |
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585 catch(ex) { |
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586 dump("error on subscribe result: " + ex + "\n"); |
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587 } |
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588 finally { |
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589 if (this._subscribeCallback) |
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590 this._subscribeCallback(); |
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591 } |
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592 }, |
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593 |
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594 _saveLogin: function() { |
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595 let lm = Cc["@mozilla.org/login-manager;1"].getService(Ci.nsILoginManager); |
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596 |
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597 // Create a new login with the auth information we obtained from the user. |
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598 let LoginInfo = new Components.Constructor("@mozilla.org/login-manager/loginInfo;1", |
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599 Ci.nsILoginInfo, |
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600 "init"); |
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601 // XXX Should we be using channel.URI.prePath in case the old URI |
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602 // redirects us to a new one at a different hostname? |
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603 let newLogin = new LoginInfo(this.machineURI.prePath, |
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604 null, |
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605 this._authInfo.realm, |
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606 this._authInfo.username, |
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607 this._authInfo.password, |
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608 "", |
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609 ""); |
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610 |
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611 // Get existing logins that have the same hostname and realm. |
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612 let logins = lm.findLogins({}, this.machineURI.prePath, null, this._authInfo.realm); |
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613 |
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614 // Try to figure out if we should replace one of the existing logins. |
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615 // If there's only one existing login, we replace it. Otherwise, if |
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616 // there's a login with the same username, we replace that. Otherwise, |
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617 // we add the new login instead of replacing an existing one. |
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618 let oldLogin; |
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619 if (logins.length == 1) |
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620 oldLogin = logins[0]; |
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621 else if (logins.length > 1) |
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622 oldLogin = logins.filter(function(v) v.username == this._authInfo.username)[0]; |
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623 |
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624 if (oldLogin) |
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625 lm.modifyLogin(oldLogin, newLogin); |
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626 else |
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627 lm.addLogin(newLogin); |
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628 |
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629 // Now that we've saved the login, we don't need the auth info anymore. |
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630 this._authInfo = null; |
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631 } |
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632 |
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633 }; |