toolkit/mozapps/downloads/content/downloads.js

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/toolkit/mozapps/downloads/content/downloads.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,1331 @@
     1.4 +# -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
     1.5 +# This Source Code Form is subject to the terms of the Mozilla Public
     1.6 +# License, v. 2.0. If a copy of the MPL was not distributed with this
     1.7 +# file, You can obtain one at http://mozilla.org/MPL/2.0/.
     1.8 +
     1.9 +////////////////////////////////////////////////////////////////////////////////
    1.10 +//// Globals
    1.11 +
    1.12 +const PREF_BDM_CLOSEWHENDONE = "browser.download.manager.closeWhenDone";
    1.13 +const PREF_BDM_ALERTONEXEOPEN = "browser.download.manager.alertOnEXEOpen";
    1.14 +const PREF_BDM_SCANWHENDONE = "browser.download.manager.scanWhenDone";
    1.15 +
    1.16 +const nsLocalFile = Components.Constructor("@mozilla.org/file/local;1",
    1.17 +                                           "nsILocalFile", "initWithPath");
    1.18 +
    1.19 +var Cc = Components.classes;
    1.20 +var Ci = Components.interfaces;
    1.21 +let Cu = Components.utils;
    1.22 +Cu.import("resource://gre/modules/XPCOMUtils.jsm");
    1.23 +Cu.import("resource://gre/modules/DownloadUtils.jsm");
    1.24 +Cu.import("resource://gre/modules/Services.jsm");
    1.25 +
    1.26 +XPCOMUtils.defineLazyModuleGetter(this, "PluralForm",
    1.27 +                                  "resource://gre/modules/PluralForm.jsm");
    1.28 +
    1.29 +const nsIDM = Ci.nsIDownloadManager;
    1.30 +
    1.31 +let gDownloadManager = Cc["@mozilla.org/download-manager;1"].getService(nsIDM);
    1.32 +let gDownloadManagerUI = Cc["@mozilla.org/download-manager-ui;1"].
    1.33 +                         getService(Ci.nsIDownloadManagerUI);
    1.34 +
    1.35 +let gDownloadListener = null;
    1.36 +let gDownloadsView = null;
    1.37 +let gSearchBox = null;
    1.38 +let gSearchTerms = [];
    1.39 +let gBuilder = 0;
    1.40 +
    1.41 +// This variable is used when performing commands on download items and gives
    1.42 +// the command the ability to do something after all items have been operated
    1.43 +// on. The following convention is used to handle the value of the variable:
    1.44 +// whenever we aren't performing a command, the value is |undefined|; just
    1.45 +// before executing commands, the value will be set to |null|; and when
    1.46 +// commands want to create a callback, they set the value to be a callback
    1.47 +// function to be executed after all download items have been visited.
    1.48 +let gPerformAllCallback;
    1.49 +
    1.50 +// Control the performance of the incremental list building by setting how many
    1.51 +// milliseconds to wait before building more of the list and how many items to
    1.52 +// add between each delay.
    1.53 +const gListBuildDelay = 300;
    1.54 +const gListBuildChunk = 3;
    1.55 +
    1.56 +// Array of download richlistitem attributes to check when searching
    1.57 +const gSearchAttributes = [
    1.58 +  "target",
    1.59 +  "status",
    1.60 +  "dateTime",
    1.61 +];
    1.62 +
    1.63 +// If the user has interacted with the window in a significant way, we should
    1.64 +// not auto-close the window. Tough UI decisions about what is "significant."
    1.65 +var gUserInteracted = false;
    1.66 +
    1.67 +// These strings will be converted to the corresponding ones from the string
    1.68 +// bundle on startup.
    1.69 +let gStr = {
    1.70 +  paused: "paused",
    1.71 +  cannotPause: "cannotPause",
    1.72 +  doneStatus: "doneStatus",
    1.73 +  doneSize: "doneSize",
    1.74 +  doneSizeUnknown: "doneSizeUnknown",
    1.75 +  stateFailed: "stateFailed",
    1.76 +  stateCanceled: "stateCanceled",
    1.77 +  stateBlockedParentalControls: "stateBlocked",
    1.78 +  stateBlockedPolicy: "stateBlockedPolicy",
    1.79 +  stateDirty: "stateDirty",
    1.80 +  downloadsTitleFiles: "downloadsTitleFiles",
    1.81 +  downloadsTitlePercent: "downloadsTitlePercent",
    1.82 +  fileExecutableSecurityWarningTitle: "fileExecutableSecurityWarningTitle",
    1.83 +  fileExecutableSecurityWarningDontAsk: "fileExecutableSecurityWarningDontAsk"
    1.84 +};
    1.85 +
    1.86 +// The statement to query for downloads that are active or match the search
    1.87 +let gStmt = null;
    1.88 +
    1.89 +////////////////////////////////////////////////////////////////////////////////
    1.90 +//// Start/Stop Observers
    1.91 +
    1.92 +function downloadCompleted(aDownload)
    1.93 +{
    1.94 +  // The download is changing state, so update the clear list button
    1.95 +  updateClearListButton();
    1.96 +
    1.97 +  // Wrap this in try...catch since this can be called while shutting down...
    1.98 +  // it doesn't really matter if it fails then since well.. we're shutting down
    1.99 +  // and there's no UI to update!
   1.100 +  try {
   1.101 +    let dl = getDownload(aDownload.id);
   1.102 +
   1.103 +    // Update attributes now that we've finished
   1.104 +    dl.setAttribute("startTime", Math.round(aDownload.startTime / 1000));
   1.105 +    dl.setAttribute("endTime", Date.now());
   1.106 +    dl.setAttribute("currBytes", aDownload.amountTransferred);
   1.107 +    dl.setAttribute("maxBytes", aDownload.size);
   1.108 +
   1.109 +    // Move the download below active if it should stay in the list
   1.110 +    if (downloadMatchesSearch(dl)) {
   1.111 +      // Iterate down until we find a non-active download
   1.112 +      let next = dl.nextSibling;
   1.113 +      while (next && next.inProgress)
   1.114 +        next = next.nextSibling;
   1.115 +
   1.116 +      // Move the item
   1.117 +      gDownloadsView.insertBefore(dl, next);
   1.118 +    } else {
   1.119 +      removeFromView(dl);
   1.120 +    }
   1.121 +
   1.122 +    // getTypeFromFile fails if it can't find a type for this file.
   1.123 +    try {
   1.124 +      // Refresh the icon, so that executable icons are shown.
   1.125 +      var mimeService = Cc["@mozilla.org/mime;1"].
   1.126 +                        getService(Ci.nsIMIMEService);
   1.127 +      var contentType = mimeService.getTypeFromFile(aDownload.targetFile);
   1.128 +
   1.129 +      var listItem = getDownload(aDownload.id)
   1.130 +      var oldImage = listItem.getAttribute("image");
   1.131 +      // Tacking on contentType bypasses cache
   1.132 +      listItem.setAttribute("image", oldImage + "&contentType=" + contentType);
   1.133 +    } catch (e) { }
   1.134 +
   1.135 +    if (gDownloadManager.activeDownloadCount == 0)
   1.136 +      document.title = document.documentElement.getAttribute("statictitle");
   1.137 +
   1.138 +    gDownloadManagerUI.getAttention();
   1.139 +  }
   1.140 +  catch (e) { }
   1.141 +}
   1.142 +
   1.143 +function autoRemoveAndClose(aDownload)
   1.144 +{
   1.145 +  var pref = Cc["@mozilla.org/preferences-service;1"].
   1.146 +             getService(Ci.nsIPrefBranch);
   1.147 +
   1.148 +  if (gDownloadManager.activeDownloadCount == 0) {
   1.149 +    // For the moment, just use the simple heuristic that if this window was
   1.150 +    // opened by the download process, rather than by the user, it should
   1.151 +    // auto-close if the pref is set that way. If the user opened it themselves,
   1.152 +    // it should not close until they explicitly close it.  Additionally, the
   1.153 +    // preference to control the feature may not be set, so defaulting to
   1.154 +    // keeping the window open.
   1.155 +    let autoClose = false;
   1.156 +    try {
   1.157 +      autoClose = pref.getBoolPref(PREF_BDM_CLOSEWHENDONE);
   1.158 +    } catch (e) { }
   1.159 +    var autoOpened =
   1.160 +      !window.opener || window.opener.location.href == window.location.href;
   1.161 +    if (autoClose && autoOpened && !gUserInteracted) {
   1.162 +      gCloseDownloadManager();
   1.163 +      return true;
   1.164 +    }
   1.165 +  }
   1.166 +
   1.167 +  return false;
   1.168 +}
   1.169 +
   1.170 +// This function can be overwritten by extensions that wish to place the
   1.171 +// Download Window in another part of the UI.
   1.172 +function gCloseDownloadManager()
   1.173 +{
   1.174 +  window.close();
   1.175 +}
   1.176 +
   1.177 +////////////////////////////////////////////////////////////////////////////////
   1.178 +//// Download Event Handlers
   1.179 +
   1.180 +function cancelDownload(aDownload)
   1.181 +{
   1.182 +  gDownloadManager.cancelDownload(aDownload.getAttribute("dlid"));
   1.183 +
   1.184 +  // XXXben -
   1.185 +  // If we got here because we resumed the download, we weren't using a temp file
   1.186 +  // because we used saveURL instead. (this is because the proper download mechanism
   1.187 +  // employed by the helper app service isn't fully accessible yet... should be fixed...
   1.188 +  // talk to bz...)
   1.189 +  // the upshot is we have to delete the file if it exists.
   1.190 +  var f = getLocalFileFromNativePathOrUrl(aDownload.getAttribute("file"));
   1.191 +
   1.192 +  if (f.exists())
   1.193 +    f.remove(false);
   1.194 +}
   1.195 +
   1.196 +function pauseDownload(aDownload)
   1.197 +{
   1.198 +  var id = aDownload.getAttribute("dlid");
   1.199 +  gDownloadManager.pauseDownload(id);
   1.200 +}
   1.201 +
   1.202 +function resumeDownload(aDownload)
   1.203 +{
   1.204 +  gDownloadManager.resumeDownload(aDownload.getAttribute("dlid"));
   1.205 +}
   1.206 +
   1.207 +function removeDownload(aDownload)
   1.208 +{
   1.209 +  gDownloadManager.removeDownload(aDownload.getAttribute("dlid"));
   1.210 +}
   1.211 +
   1.212 +function retryDownload(aDownload)
   1.213 +{
   1.214 +  removeFromView(aDownload);
   1.215 +  gDownloadManager.retryDownload(aDownload.getAttribute("dlid"));
   1.216 +}
   1.217 +
   1.218 +function showDownload(aDownload)
   1.219 +{
   1.220 +  var f = getLocalFileFromNativePathOrUrl(aDownload.getAttribute("file"));
   1.221 +
   1.222 +  try {
   1.223 +    // Show the directory containing the file and select the file
   1.224 +    f.reveal();
   1.225 +  } catch (e) {
   1.226 +    // If reveal fails for some reason (e.g., it's not implemented on unix or
   1.227 +    // the file doesn't exist), try using the parent if we have it.
   1.228 +    let parent = f.parent.QueryInterface(Ci.nsILocalFile);
   1.229 +    if (!parent)
   1.230 +      return;
   1.231 +
   1.232 +    try {
   1.233 +      // "Double click" the parent directory to show where the file should be
   1.234 +      parent.launch();
   1.235 +    } catch (e) {
   1.236 +      // If launch also fails (probably because it's not implemented), let the
   1.237 +      // OS handler try to open the parent
   1.238 +      openExternal(parent);
   1.239 +    }
   1.240 +  }
   1.241 +}
   1.242 +
   1.243 +function onDownloadDblClick(aEvent)
   1.244 +{
   1.245 +  // Only do the default action for double primary clicks
   1.246 +  if (aEvent.button == 0 && aEvent.target.selected)
   1.247 +    doDefaultForSelected();
   1.248 +}
   1.249 +
   1.250 +function openDownload(aDownload)
   1.251 +{
   1.252 +  var f = getLocalFileFromNativePathOrUrl(aDownload.getAttribute("file"));
   1.253 +  if (f.isExecutable()) {
   1.254 +    var dontAsk = false;
   1.255 +    var pref = Cc["@mozilla.org/preferences-service;1"].
   1.256 +               getService(Ci.nsIPrefBranch);
   1.257 +    try {
   1.258 +      dontAsk = !pref.getBoolPref(PREF_BDM_ALERTONEXEOPEN);
   1.259 +    } catch (e) { }
   1.260 +
   1.261 +#ifdef XP_WIN
   1.262 +    // On Vista and above, we rely on native security prompting for
   1.263 +    // downloaded content unless it's disabled.
   1.264 +    try {
   1.265 +      var sysInfo = Cc["@mozilla.org/system-info;1"].
   1.266 +                    getService(Ci.nsIPropertyBag2);
   1.267 +      if (parseFloat(sysInfo.getProperty("version")) >= 6 &&
   1.268 +          pref.getBoolPref(PREF_BDM_SCANWHENDONE)) {
   1.269 +        dontAsk = true;
   1.270 +      }
   1.271 +    } catch (ex) { }
   1.272 +#endif
   1.273 +
   1.274 +    if (!dontAsk) {
   1.275 +      var strings = document.getElementById("downloadStrings");
   1.276 +      var name = aDownload.getAttribute("target");
   1.277 +      var message = strings.getFormattedString("fileExecutableSecurityWarning", [name, name]);
   1.278 +
   1.279 +      let title = gStr.fileExecutableSecurityWarningTitle;
   1.280 +      let dontAsk = gStr.fileExecutableSecurityWarningDontAsk;
   1.281 +
   1.282 +      var promptSvc = Cc["@mozilla.org/embedcomp/prompt-service;1"].
   1.283 +                      getService(Ci.nsIPromptService);
   1.284 +      var checkbox = { value: false };
   1.285 +      var open = promptSvc.confirmCheck(window, title, message, dontAsk, checkbox);
   1.286 +
   1.287 +      if (!open)
   1.288 +        return;
   1.289 +      pref.setBoolPref(PREF_BDM_ALERTONEXEOPEN, !checkbox.value);
   1.290 +    }
   1.291 +  }
   1.292 +  try {
   1.293 +    try {
   1.294 +      let download = gDownloadManager.getDownload(aDownload.getAttribute("dlid"));
   1.295 +      let mimeInfo = download.MIMEInfo;
   1.296 +      if (mimeInfo.preferredAction == mimeInfo.useHelperApp) {
   1.297 +        mimeInfo.launchWithFile(f);
   1.298 +        return;
   1.299 +      }
   1.300 +    } catch (ex) {
   1.301 +    }
   1.302 +    f.launch();
   1.303 +  } catch (ex) {
   1.304 +    // if launch fails, try sending it through the system's external
   1.305 +    // file: URL handler
   1.306 +    openExternal(f);
   1.307 +  }
   1.308 +}
   1.309 +
   1.310 +function openReferrer(aDownload)
   1.311 +{
   1.312 +  openURL(getReferrerOrSource(aDownload));
   1.313 +}
   1.314 +
   1.315 +function copySourceLocation(aDownload)
   1.316 +{
   1.317 +  var uri = aDownload.getAttribute("uri");
   1.318 +  var clipboard = Cc["@mozilla.org/widget/clipboardhelper;1"].
   1.319 +                  getService(Ci.nsIClipboardHelper);
   1.320 +
   1.321 +  // Check if we should initialize a callback
   1.322 +  if (gPerformAllCallback === null) {
   1.323 +    let uris = [];
   1.324 +    gPerformAllCallback = function(aURI) aURI ? uris.push(aURI) :
   1.325 +      clipboard.copyString(uris.join("\n"), document);
   1.326 +  }
   1.327 +
   1.328 +  // We have a callback to use, so use it to add a uri
   1.329 +  if (typeof gPerformAllCallback == "function")
   1.330 +    gPerformAllCallback(uri);
   1.331 +  else {
   1.332 +    // It's a plain copy source, so copy it
   1.333 +    clipboard.copyString(uri, document);
   1.334 +  }
   1.335 +}
   1.336 +
   1.337 +/**
   1.338 + * Remove the currently shown downloads from the download list.
   1.339 + */
   1.340 +function clearDownloadList() {
   1.341 +  // Clear the whole list if there's no search
   1.342 +  if (gSearchTerms == "") {
   1.343 +    gDownloadManager.cleanUp();
   1.344 +    return;
   1.345 +  }
   1.346 +
   1.347 +  // Remove each download starting from the end until we hit a download
   1.348 +  // that is in progress
   1.349 +  let item;
   1.350 +  while ((item = gDownloadsView.lastChild) && !item.inProgress)
   1.351 +    removeDownload(item);
   1.352 +
   1.353 +  // Clear the input as if the user did it and move focus to the list
   1.354 +  gSearchBox.value = "";
   1.355 +  gSearchBox.doCommand();
   1.356 +  gDownloadsView.focus();
   1.357 +}
   1.358 +
   1.359 +// This is called by the progress listener.
   1.360 +var gLastComputedMean = -1;
   1.361 +var gLastActiveDownloads = 0;
   1.362 +function onUpdateProgress()
   1.363 +{
   1.364 +  let numActiveDownloads = gDownloadManager.activeDownloadCount;
   1.365 +
   1.366 +  // Use the default title and reset "last" values if there's no downloads
   1.367 +  if (numActiveDownloads == 0) {
   1.368 +    document.title = document.documentElement.getAttribute("statictitle");
   1.369 +    gLastComputedMean = -1;
   1.370 +    gLastActiveDownloads = 0;
   1.371 +
   1.372 +    return;
   1.373 +  }
   1.374 +
   1.375 +  // Establish the mean transfer speed and amount downloaded.
   1.376 +  var mean = 0;
   1.377 +  var base = 0;
   1.378 +  var dls = gDownloadManager.activeDownloads;
   1.379 +  while (dls.hasMoreElements()) {
   1.380 +    let dl = dls.getNext();
   1.381 +    if (dl.percentComplete < 100 && dl.size > 0) {
   1.382 +      mean += dl.amountTransferred;
   1.383 +      base += dl.size;
   1.384 +    }
   1.385 +  }
   1.386 +
   1.387 +  // Calculate the percent transferred, unless we don't have a total file size
   1.388 +  let title = gStr.downloadsTitlePercent;
   1.389 +  if (base == 0)
   1.390 +    title = gStr.downloadsTitleFiles;
   1.391 +  else
   1.392 +    mean = Math.floor((mean / base) * 100);
   1.393 +
   1.394 +  // Update title of window
   1.395 +  if (mean != gLastComputedMean || gLastActiveDownloads != numActiveDownloads) {
   1.396 +    gLastComputedMean = mean;
   1.397 +    gLastActiveDownloads = numActiveDownloads;
   1.398 +
   1.399 +    // Get the correct plural form and insert number of downloads and percent
   1.400 +    title = PluralForm.get(numActiveDownloads, title);
   1.401 +    title = replaceInsert(title, 1, numActiveDownloads);
   1.402 +    title = replaceInsert(title, 2, mean);
   1.403 +
   1.404 +    document.title = title;
   1.405 +  }
   1.406 +}
   1.407 +
   1.408 +////////////////////////////////////////////////////////////////////////////////
   1.409 +//// Startup, Shutdown
   1.410 +
   1.411 +function Startup()
   1.412 +{
   1.413 +  gDownloadsView = document.getElementById("downloadView");
   1.414 +  gSearchBox = document.getElementById("searchbox");
   1.415 +
   1.416 +  // convert strings to those in the string bundle
   1.417 +  let (sb = document.getElementById("downloadStrings")) {
   1.418 +    let getStr = function(string) sb.getString(string);
   1.419 +    for (let [name, value] in Iterator(gStr))
   1.420 +      gStr[name] = typeof value == "string" ? getStr(value) : value.map(getStr);
   1.421 +  }
   1.422 +
   1.423 +  initStatement();
   1.424 +  buildDownloadList(true);
   1.425 +
   1.426 +  // The DownloadProgressListener (DownloadProgressListener.js) handles progress
   1.427 +  // notifications.
   1.428 +  gDownloadListener = new DownloadProgressListener();
   1.429 +  gDownloadManager.addListener(gDownloadListener);
   1.430 +
   1.431 +  // If the UI was displayed because the user interacted, we need to make sure
   1.432 +  // we update gUserInteracted accordingly.
   1.433 +  if (window.arguments[1] == Ci.nsIDownloadManagerUI.REASON_USER_INTERACTED)
   1.434 +    gUserInteracted = true;
   1.435 +
   1.436 +  // downloads can finish before Startup() does, so check if the window should
   1.437 +  // close and act accordingly
   1.438 +  if (!autoRemoveAndClose())
   1.439 +    gDownloadsView.focus();
   1.440 +
   1.441 +  let obs = Cc["@mozilla.org/observer-service;1"].
   1.442 +            getService(Ci.nsIObserverService);
   1.443 +  obs.addObserver(gDownloadObserver, "download-manager-remove-download", false);
   1.444 +  obs.addObserver(gDownloadObserver, "browser-lastwindow-close-granted", false);
   1.445 +
   1.446 +  // Clear the search box and move focus to the list on escape from the box
   1.447 +  gSearchBox.addEventListener("keypress", function(e) {
   1.448 +    if (e.keyCode == e.DOM_VK_ESCAPE) {
   1.449 +      // Move focus to the list instead of closing the window
   1.450 +      gDownloadsView.focus();
   1.451 +      e.preventDefault();
   1.452 +    }
   1.453 +  }, false);
   1.454 +
   1.455 +  let DownloadTaskbarProgress =
   1.456 +    Cu.import("resource://gre/modules/DownloadTaskbarProgress.jsm", {}).DownloadTaskbarProgress;
   1.457 +  DownloadTaskbarProgress.onDownloadWindowLoad(window);
   1.458 +}
   1.459 +
   1.460 +function Shutdown()
   1.461 +{
   1.462 +  gDownloadManager.removeListener(gDownloadListener);
   1.463 +
   1.464 +  let obs = Cc["@mozilla.org/observer-service;1"].
   1.465 +            getService(Ci.nsIObserverService);
   1.466 +  obs.removeObserver(gDownloadObserver, "download-manager-remove-download");
   1.467 +  obs.removeObserver(gDownloadObserver, "browser-lastwindow-close-granted");
   1.468 +
   1.469 +  clearTimeout(gBuilder);
   1.470 +  gStmt.reset();
   1.471 +  gStmt.finalize();
   1.472 +}
   1.473 +
   1.474 +let gDownloadObserver = {
   1.475 +  observe: function gdo_observe(aSubject, aTopic, aData) {
   1.476 +    switch (aTopic) {
   1.477 +      case "download-manager-remove-download":
   1.478 +        // A null subject here indicates "remove multiple", so we just rebuild.
   1.479 +        if (!aSubject) {
   1.480 +          // Rebuild the default view
   1.481 +          buildDownloadList(true);
   1.482 +          break;
   1.483 +        }
   1.484 +
   1.485 +        // Otherwise, remove a single download
   1.486 +        let id = aSubject.QueryInterface(Ci.nsISupportsPRUint32);
   1.487 +        let dl = getDownload(id.data);
   1.488 +        removeFromView(dl);
   1.489 +        break;
   1.490 +      case "browser-lastwindow-close-granted":
   1.491 +#ifndef XP_MACOSX
   1.492 +        if (gDownloadManager.activeDownloadCount == 0) {
   1.493 +          setTimeout(gCloseDownloadManager, 0);
   1.494 +        }
   1.495 +#endif
   1.496 +        break;
   1.497 +    }
   1.498 +  }
   1.499 +};
   1.500 +
   1.501 +////////////////////////////////////////////////////////////////////////////////
   1.502 +//// View Context Menus
   1.503 +
   1.504 +var gContextMenus = [
   1.505 +  // DOWNLOAD_DOWNLOADING
   1.506 +  [
   1.507 +    "menuitem_pause"
   1.508 +    , "menuitem_cancel"
   1.509 +    , "menuseparator"
   1.510 +    , "menuitem_show"
   1.511 +    , "menuseparator"
   1.512 +    , "menuitem_openReferrer"
   1.513 +    , "menuitem_copyLocation"
   1.514 +    , "menuseparator"
   1.515 +    , "menuitem_selectAll"
   1.516 +  ],
   1.517 +  // DOWNLOAD_FINISHED
   1.518 +  [
   1.519 +    "menuitem_open"
   1.520 +    , "menuitem_show"
   1.521 +    , "menuseparator"
   1.522 +    , "menuitem_openReferrer"
   1.523 +    , "menuitem_copyLocation"
   1.524 +    , "menuseparator"
   1.525 +    , "menuitem_selectAll"
   1.526 +    , "menuseparator"
   1.527 +    , "menuitem_removeFromList"
   1.528 +  ],
   1.529 +  // DOWNLOAD_FAILED
   1.530 +  [
   1.531 +    "menuitem_retry"
   1.532 +    , "menuseparator"
   1.533 +    , "menuitem_openReferrer"
   1.534 +    , "menuitem_copyLocation"
   1.535 +    , "menuseparator"
   1.536 +    , "menuitem_selectAll"
   1.537 +    , "menuseparator"
   1.538 +    , "menuitem_removeFromList"
   1.539 +  ],
   1.540 +  // DOWNLOAD_CANCELED
   1.541 +  [
   1.542 +    "menuitem_retry"
   1.543 +    , "menuseparator"
   1.544 +    , "menuitem_openReferrer"
   1.545 +    , "menuitem_copyLocation"
   1.546 +    , "menuseparator"
   1.547 +    , "menuitem_selectAll"
   1.548 +    , "menuseparator"
   1.549 +    , "menuitem_removeFromList"
   1.550 +  ],
   1.551 +  // DOWNLOAD_PAUSED
   1.552 +  [
   1.553 +    "menuitem_resume"
   1.554 +    , "menuitem_cancel"
   1.555 +    , "menuseparator"
   1.556 +    , "menuitem_show"
   1.557 +    , "menuseparator"
   1.558 +    , "menuitem_openReferrer"
   1.559 +    , "menuitem_copyLocation"
   1.560 +    , "menuseparator"
   1.561 +    , "menuitem_selectAll"
   1.562 +  ],
   1.563 +  // DOWNLOAD_QUEUED
   1.564 +  [
   1.565 +    "menuitem_cancel"
   1.566 +    , "menuseparator"
   1.567 +    , "menuitem_show"
   1.568 +    , "menuseparator"
   1.569 +    , "menuitem_openReferrer"
   1.570 +    , "menuitem_copyLocation"
   1.571 +    , "menuseparator"
   1.572 +    , "menuitem_selectAll"
   1.573 +  ],
   1.574 +  // DOWNLOAD_BLOCKED_PARENTAL
   1.575 +  [
   1.576 +    "menuitem_openReferrer"
   1.577 +    , "menuitem_copyLocation"
   1.578 +    , "menuseparator"
   1.579 +    , "menuitem_selectAll"
   1.580 +    , "menuseparator"
   1.581 +    , "menuitem_removeFromList"
   1.582 +  ],
   1.583 +  // DOWNLOAD_SCANNING
   1.584 +  [
   1.585 +    "menuitem_show"
   1.586 +    , "menuseparator"
   1.587 +    , "menuitem_openReferrer"
   1.588 +    , "menuitem_copyLocation"
   1.589 +    , "menuseparator"
   1.590 +    , "menuitem_selectAll"
   1.591 +  ],
   1.592 +  // DOWNLOAD_DIRTY
   1.593 +  [
   1.594 +    "menuitem_openReferrer"
   1.595 +    , "menuitem_copyLocation"
   1.596 +    , "menuseparator"
   1.597 +    , "menuitem_selectAll"
   1.598 +    , "menuseparator"
   1.599 +    , "menuitem_removeFromList"
   1.600 +  ],
   1.601 +  // DOWNLOAD_BLOCKED_POLICY
   1.602 +  [
   1.603 +    "menuitem_openReferrer"
   1.604 +    , "menuitem_copyLocation"
   1.605 +    , "menuseparator"
   1.606 +    , "menuitem_selectAll"
   1.607 +    , "menuseparator"
   1.608 +    , "menuitem_removeFromList"
   1.609 +  ]
   1.610 +];
   1.611 +
   1.612 +function buildContextMenu(aEvent)
   1.613 +{
   1.614 +  if (aEvent.target.id != "downloadContextMenu")
   1.615 +    return false;
   1.616 +
   1.617 +  var popup = document.getElementById("downloadContextMenu");
   1.618 +  while (popup.hasChildNodes())
   1.619 +    popup.removeChild(popup.firstChild);
   1.620 +
   1.621 +  if (gDownloadsView.selectedItem) {
   1.622 +    let dl = gDownloadsView.selectedItem;
   1.623 +    let idx = parseInt(dl.getAttribute("state"));
   1.624 +    if (idx < 0)
   1.625 +      idx = 0;
   1.626 +
   1.627 +    var menus = gContextMenus[idx];
   1.628 +    for (let i = 0; i < menus.length; ++i) {
   1.629 +      let menuitem = document.getElementById(menus[i]).cloneNode(true);
   1.630 +      let cmd = menuitem.getAttribute("cmd");
   1.631 +      if (cmd)
   1.632 +        menuitem.disabled = !gDownloadViewController.isCommandEnabled(cmd, dl);
   1.633 +
   1.634 +      popup.appendChild(menuitem);
   1.635 +    }
   1.636 +
   1.637 +    return true;
   1.638 +  }
   1.639 +
   1.640 +  return false;
   1.641 +}
   1.642 +////////////////////////////////////////////////////////////////////////////////
   1.643 +//// Drag and Drop
   1.644 +var gDownloadDNDObserver =
   1.645 +{
   1.646 +  onDragStart: function (aEvent)
   1.647 +  {
   1.648 +    if (!gDownloadsView.selectedItem)
   1.649 +      return;
   1.650 +    var dl = gDownloadsView.selectedItem;
   1.651 +    var f = getLocalFileFromNativePathOrUrl(dl.getAttribute("file"));
   1.652 +    if (!f.exists())
   1.653 +      return;
   1.654 +
   1.655 +    var dt = aEvent.dataTransfer;
   1.656 +    dt.mozSetDataAt("application/x-moz-file", f, 0);
   1.657 +    var url = Services.io.newFileURI(f).spec;
   1.658 +    dt.setData("text/uri-list", url);
   1.659 +    dt.setData("text/plain", url);
   1.660 +    dt.effectAllowed = "copyMove";
   1.661 +    dt.addElement(dl);
   1.662 +  },
   1.663 +
   1.664 +  onDragOver: function (aEvent)
   1.665 +  {
   1.666 +    var types = aEvent.dataTransfer.types;
   1.667 +    if (types.contains("text/uri-list") ||
   1.668 +        types.contains("text/x-moz-url") ||
   1.669 +        types.contains("text/plain"))
   1.670 +      aEvent.preventDefault();
   1.671 +  },
   1.672 +
   1.673 +  onDrop: function(aEvent)
   1.674 +  {
   1.675 +    var dt = aEvent.dataTransfer;
   1.676 +    // If dragged item is from our source, do not try to
   1.677 +    // redownload already downloaded file.
   1.678 +    if (dt.mozGetDataAt("application/x-moz-file", 0))
   1.679 +      return;
   1.680 +
   1.681 +    var url = dt.getData("URL");
   1.682 +    var name;
   1.683 +    if (!url) {
   1.684 +      url = dt.getData("text/x-moz-url") || dt.getData("text/plain");
   1.685 +      [url, name] = url.split("\n");
   1.686 +    }
   1.687 +    if (url) {
   1.688 +      let sourceDoc = dt.mozSourceNode ? dt.mozSourceNode.ownerDocument : document;
   1.689 +      saveURL(url, name ? name : url, null, true, true, null, sourceDoc);
   1.690 +    }
   1.691 +  }
   1.692 +}
   1.693 +
   1.694 +function pasteHandler() {
   1.695 +  let trans = Cc["@mozilla.org/widget/transferable;1"].
   1.696 +              createInstance(Ci.nsITransferable);
   1.697 +  trans.init(null);
   1.698 +  let flavors = ["text/x-moz-url", "text/unicode"];
   1.699 +  flavors.forEach(trans.addDataFlavor);
   1.700 +
   1.701 +  Services.clipboard.getData(trans, Services.clipboard.kGlobalClipboard);
   1.702 +
   1.703 +  // Getting the data or creating the nsIURI might fail
   1.704 +  try {
   1.705 +    let data = {};
   1.706 +    trans.getAnyTransferData({}, data, {});
   1.707 +    let [url, name] = data.value.QueryInterface(Ci.nsISupportsString).data.split("\n");
   1.708 +
   1.709 +    if (!url)
   1.710 +      return;
   1.711 +
   1.712 +    let uri = Services.io.newURI(url, null, null);
   1.713 +
   1.714 +    saveURL(uri.spec, name || uri.spec, null, true, true, null, document);
   1.715 +  } catch (ex) {}
   1.716 +}
   1.717 +
   1.718 +////////////////////////////////////////////////////////////////////////////////
   1.719 +//// Command Updating and Command Handlers
   1.720 +
   1.721 +var gDownloadViewController = {
   1.722 +  isCommandEnabled: function(aCommand, aItem)
   1.723 +  {
   1.724 +    let dl = aItem;
   1.725 +    let download = null; // used for getting an nsIDownload object
   1.726 +
   1.727 +    switch (aCommand) {
   1.728 +      case "cmd_cancel":
   1.729 +        return dl.inProgress;
   1.730 +      case "cmd_open": {
   1.731 +        let file = getLocalFileFromNativePathOrUrl(dl.getAttribute("file"));
   1.732 +        return dl.openable && file.exists();
   1.733 +      }
   1.734 +      case "cmd_show": {
   1.735 +        let file = getLocalFileFromNativePathOrUrl(dl.getAttribute("file"));
   1.736 +        return file.exists();
   1.737 +      }
   1.738 +      case "cmd_pause":
   1.739 +        download = gDownloadManager.getDownload(dl.getAttribute("dlid"));
   1.740 +        return dl.inProgress && !dl.paused && download.resumable;
   1.741 +      case "cmd_pauseResume":
   1.742 +        download = gDownloadManager.getDownload(dl.getAttribute("dlid"));
   1.743 +        return (dl.inProgress || dl.paused) && download.resumable;
   1.744 +      case "cmd_resume":
   1.745 +        download = gDownloadManager.getDownload(dl.getAttribute("dlid"));
   1.746 +        return dl.paused && download.resumable;
   1.747 +      case "cmd_openReferrer":
   1.748 +        return dl.hasAttribute("referrer");
   1.749 +      case "cmd_removeFromList":
   1.750 +      case "cmd_retry":
   1.751 +        return dl.removable;
   1.752 +      case "cmd_copyLocation":
   1.753 +        return true;
   1.754 +    }
   1.755 +    return false;
   1.756 +  },
   1.757 +
   1.758 +  doCommand: function(aCommand, aItem)
   1.759 +  {
   1.760 +    if (this.isCommandEnabled(aCommand, aItem))
   1.761 +      this.commands[aCommand](aItem);
   1.762 +  },
   1.763 +
   1.764 +  commands: {
   1.765 +    cmd_cancel: function(aSelectedItem) {
   1.766 +      cancelDownload(aSelectedItem);
   1.767 +    },
   1.768 +    cmd_open: function(aSelectedItem) {
   1.769 +      openDownload(aSelectedItem);
   1.770 +    },
   1.771 +    cmd_openReferrer: function(aSelectedItem) {
   1.772 +      openReferrer(aSelectedItem);
   1.773 +    },
   1.774 +    cmd_pause: function(aSelectedItem) {
   1.775 +      pauseDownload(aSelectedItem);
   1.776 +    },
   1.777 +    cmd_pauseResume: function(aSelectedItem) {
   1.778 +      if (aSelectedItem.paused)
   1.779 +        this.cmd_resume(aSelectedItem);
   1.780 +      else
   1.781 +        this.cmd_pause(aSelectedItem);
   1.782 +    },
   1.783 +    cmd_removeFromList: function(aSelectedItem) {
   1.784 +      removeDownload(aSelectedItem);
   1.785 +    },
   1.786 +    cmd_resume: function(aSelectedItem) {
   1.787 +      resumeDownload(aSelectedItem);
   1.788 +    },
   1.789 +    cmd_retry: function(aSelectedItem) {
   1.790 +      retryDownload(aSelectedItem);
   1.791 +    },
   1.792 +    cmd_show: function(aSelectedItem) {
   1.793 +      showDownload(aSelectedItem);
   1.794 +    },
   1.795 +    cmd_copyLocation: function(aSelectedItem) {
   1.796 +      copySourceLocation(aSelectedItem);
   1.797 +    },
   1.798 +  }
   1.799 +};
   1.800 +
   1.801 +/**
   1.802 + * Helper function to do commands.
   1.803 + *
   1.804 + * @param aCmd
   1.805 + *        The command to be performed.
   1.806 + * @param aItem
   1.807 + *        The richlistitem that represents the download that will have the
   1.808 + *        command performed on it. If this is null, the command is performed on
   1.809 + *        all downloads. If the item passed in is not a richlistitem that
   1.810 + *        represents a download, it will walk up the parent nodes until it finds
   1.811 + *        a DOM node that is.
   1.812 + */
   1.813 +function performCommand(aCmd, aItem)
   1.814 +{
   1.815 +  let elm = aItem;
   1.816 +  if (!elm) {
   1.817 +    // If we don't have a desired download item, do the command for all
   1.818 +    // selected items. Initialize the callback to null so commands know to add
   1.819 +    // a callback if they want. We will call the callback with empty arguments
   1.820 +    // after performing the command on each selected download item.
   1.821 +    gPerformAllCallback = null;
   1.822 +
   1.823 +    // Convert the nodelist into an array to keep a copy of the download items
   1.824 +    let items = [];
   1.825 +    for (let i = gDownloadsView.selectedItems.length; --i >= 0; )
   1.826 +      items.unshift(gDownloadsView.selectedItems[i]);
   1.827 +
   1.828 +    // Do the command for each download item
   1.829 +    for each (let item in items)
   1.830 +      performCommand(aCmd, item);
   1.831 +
   1.832 +    // Call the callback with no arguments and reset because we're done
   1.833 +    if (typeof gPerformAllCallback == "function")
   1.834 +      gPerformAllCallback();
   1.835 +    gPerformAllCallback = undefined;
   1.836 +
   1.837 +    return;
   1.838 +  } else {
   1.839 +    while (elm.nodeName != "richlistitem" ||
   1.840 +           elm.getAttribute("type") != "download")
   1.841 +      elm = elm.parentNode;
   1.842 +  }
   1.843 +
   1.844 +  gDownloadViewController.doCommand(aCmd, elm);
   1.845 +}
   1.846 +
   1.847 +function setSearchboxFocus()
   1.848 +{
   1.849 +  gSearchBox.focus();
   1.850 +  gSearchBox.select();
   1.851 +}
   1.852 +
   1.853 +function openExternal(aFile)
   1.854 +{
   1.855 +  var uri = Cc["@mozilla.org/network/io-service;1"].
   1.856 +            getService(Ci.nsIIOService).newFileURI(aFile);
   1.857 +
   1.858 +  var protocolSvc = Cc["@mozilla.org/uriloader/external-protocol-service;1"].
   1.859 +                    getService(Ci.nsIExternalProtocolService);
   1.860 +  protocolSvc.loadUrl(uri);
   1.861 +
   1.862 +  return;
   1.863 +}
   1.864 +
   1.865 +////////////////////////////////////////////////////////////////////////////////
   1.866 +//// Utility Functions
   1.867 +
   1.868 +/**
   1.869 + * Create a download richlistitem with the provided attributes. Some attributes
   1.870 + * are *required* while optional ones will only be set on the item if provided.
   1.871 + *
   1.872 + * @param aAttrs
   1.873 + *        An object that must have the following properties: dlid, file,
   1.874 + *        target, uri, state, progress, startTime, endTime, currBytes,
   1.875 + *        maxBytes; optional properties: referrer
   1.876 + * @return An initialized download richlistitem
   1.877 + */
   1.878 +function createDownloadItem(aAttrs)
   1.879 +{
   1.880 +  let dl = document.createElement("richlistitem");
   1.881 +
   1.882 +  // Copy the attributes from the argument into the item
   1.883 +  for (let attr in aAttrs)
   1.884 +    dl.setAttribute(attr, aAttrs[attr]);
   1.885 +
   1.886 +  // Initialize other attributes
   1.887 +  dl.setAttribute("type", "download");
   1.888 +  dl.setAttribute("id", "dl" + aAttrs.dlid);
   1.889 +  dl.setAttribute("image", "moz-icon://" + aAttrs.file + "?size=32");
   1.890 +  dl.setAttribute("lastSeconds", Infinity);
   1.891 +
   1.892 +  // Initialize more complex attributes
   1.893 +  updateTime(dl);
   1.894 +  updateStatus(dl);
   1.895 +
   1.896 +  try {
   1.897 +    let file = getLocalFileFromNativePathOrUrl(aAttrs.file);
   1.898 +    dl.setAttribute("path", file.nativePath || file.path);
   1.899 +    return dl;
   1.900 +  } catch (e) {
   1.901 +    // aFile might not be a file: url or a valid native path
   1.902 +    // see bug #392386 for details
   1.903 +  }
   1.904 +  return null;
   1.905 +}
   1.906 +
   1.907 +/**
   1.908 + * Updates the disabled state of the buttons of a downlaod.
   1.909 + *
   1.910 + * @param aItem
   1.911 + *        The richlistitem representing the download.
   1.912 + */
   1.913 +function updateButtons(aItem)
   1.914 +{
   1.915 +  let buttons = aItem.buttons;
   1.916 +
   1.917 +  for (let i = 0; i < buttons.length; ++i) {
   1.918 +    let cmd = buttons[i].getAttribute("cmd");
   1.919 +    let enabled = gDownloadViewController.isCommandEnabled(cmd, aItem);
   1.920 +    buttons[i].disabled = !enabled;
   1.921 +
   1.922 +    if ("cmd_pause" == cmd && !enabled) {
   1.923 +      // We need to add the tooltip indicating that the download cannot be
   1.924 +      // paused now.
   1.925 +      buttons[i].setAttribute("tooltiptext", gStr.cannotPause);
   1.926 +    }
   1.927 +  }
   1.928 +}
   1.929 +
   1.930 +/**
   1.931 + * Updates the status for a download item depending on its state
   1.932 + *
   1.933 + * @param aItem
   1.934 + *        The richlistitem that has various download attributes.
   1.935 + * @param aDownload
   1.936 + *        The nsDownload from the backend. This is an optional parameter, but
   1.937 + *        is useful for certain states such as DOWNLOADING.
   1.938 + */
   1.939 +function updateStatus(aItem, aDownload) {
   1.940 +  let status = "";
   1.941 +  let statusTip = "";
   1.942 +
   1.943 +  let state = Number(aItem.getAttribute("state"));
   1.944 +  switch (state) {
   1.945 +    case nsIDM.DOWNLOAD_PAUSED:
   1.946 +    {
   1.947 +      let currBytes = Number(aItem.getAttribute("currBytes"));
   1.948 +      let maxBytes = Number(aItem.getAttribute("maxBytes"));
   1.949 +
   1.950 +      let transfer = DownloadUtils.getTransferTotal(currBytes, maxBytes);
   1.951 +      status = replaceInsert(gStr.paused, 1, transfer);
   1.952 +
   1.953 +      break;
   1.954 +    }
   1.955 +    case nsIDM.DOWNLOAD_DOWNLOADING:
   1.956 +    {
   1.957 +      let currBytes = Number(aItem.getAttribute("currBytes"));
   1.958 +      let maxBytes = Number(aItem.getAttribute("maxBytes"));
   1.959 +      // If we don't have an active download, assume 0 bytes/sec
   1.960 +      let speed = aDownload ? aDownload.speed : 0;
   1.961 +      let lastSec = Number(aItem.getAttribute("lastSeconds"));
   1.962 +
   1.963 +      let newLast;
   1.964 +      [status, newLast] =
   1.965 +        DownloadUtils.getDownloadStatus(currBytes, maxBytes, speed, lastSec);
   1.966 +
   1.967 +      // Update lastSeconds to be the new value
   1.968 +      aItem.setAttribute("lastSeconds", newLast);
   1.969 +
   1.970 +      break;
   1.971 +    }
   1.972 +    case nsIDM.DOWNLOAD_FINISHED:
   1.973 +    case nsIDM.DOWNLOAD_FAILED:
   1.974 +    case nsIDM.DOWNLOAD_CANCELED:
   1.975 +    case nsIDM.DOWNLOAD_BLOCKED_PARENTAL:
   1.976 +    case nsIDM.DOWNLOAD_BLOCKED_POLICY:
   1.977 +    case nsIDM.DOWNLOAD_DIRTY:
   1.978 +    {
   1.979 +      let (stateSize = {}) {
   1.980 +        stateSize[nsIDM.DOWNLOAD_FINISHED] = function() {
   1.981 +          // Display the file size, but show "Unknown" for negative sizes
   1.982 +          let fileSize = Number(aItem.getAttribute("maxBytes"));
   1.983 +          let sizeText = gStr.doneSizeUnknown;
   1.984 +          if (fileSize >= 0) {
   1.985 +            let [size, unit] = DownloadUtils.convertByteUnits(fileSize);
   1.986 +            sizeText = replaceInsert(gStr.doneSize, 1, size);
   1.987 +            sizeText = replaceInsert(sizeText, 2, unit);
   1.988 +          }
   1.989 +          return sizeText;
   1.990 +        };
   1.991 +        stateSize[nsIDM.DOWNLOAD_FAILED] = function() gStr.stateFailed;
   1.992 +        stateSize[nsIDM.DOWNLOAD_CANCELED] = function() gStr.stateCanceled;
   1.993 +        stateSize[nsIDM.DOWNLOAD_BLOCKED_PARENTAL] = function() gStr.stateBlockedParentalControls;
   1.994 +        stateSize[nsIDM.DOWNLOAD_BLOCKED_POLICY] = function() gStr.stateBlockedPolicy;
   1.995 +        stateSize[nsIDM.DOWNLOAD_DIRTY] = function() gStr.stateDirty;
   1.996 +
   1.997 +        // Insert 1 is the download size or download state
   1.998 +        status = replaceInsert(gStr.doneStatus, 1, stateSize[state]());
   1.999 +      }
  1.1000 +
  1.1001 +      let [displayHost, fullHost] =
  1.1002 +        DownloadUtils.getURIHost(getReferrerOrSource(aItem));
  1.1003 +      // Insert 2 is the eTLD + 1 or other variations of the host
  1.1004 +      status = replaceInsert(status, 2, displayHost);
  1.1005 +      // Set the tooltip to be the full host
  1.1006 +      statusTip = fullHost;
  1.1007 +
  1.1008 +      break;
  1.1009 +    }
  1.1010 +  }
  1.1011 +
  1.1012 +  aItem.setAttribute("status", status);
  1.1013 +  aItem.setAttribute("statusTip", statusTip != "" ? statusTip : status);
  1.1014 +}
  1.1015 +
  1.1016 +/**
  1.1017 + * Updates the time that gets shown for completed download items
  1.1018 + *
  1.1019 + * @param aItem
  1.1020 + *        The richlistitem representing a download in the UI
  1.1021 + */
  1.1022 +function updateTime(aItem)
  1.1023 +{
  1.1024 +  // Don't bother updating for things that aren't finished
  1.1025 +  if (aItem.inProgress)
  1.1026 +    return;
  1.1027 +
  1.1028 +  let end = new Date(parseInt(aItem.getAttribute("endTime")));
  1.1029 +  let [dateCompact, dateComplete] = DownloadUtils.getReadableDates(end);
  1.1030 +  aItem.setAttribute("dateTime", dateCompact);
  1.1031 +  aItem.setAttribute("dateTimeTip", dateComplete);
  1.1032 +}
  1.1033 +
  1.1034 +/**
  1.1035 + * Helper function to replace a placeholder string with a real string
  1.1036 + *
  1.1037 + * @param aText
  1.1038 + *        Source text containing placeholder (e.g., #1)
  1.1039 + * @param aIndex
  1.1040 + *        Index number of placeholder to replace
  1.1041 + * @param aValue
  1.1042 + *        New string to put in place of placeholder
  1.1043 + * @return The string with placeholder replaced with the new string
  1.1044 + */
  1.1045 +function replaceInsert(aText, aIndex, aValue)
  1.1046 +{
  1.1047 +  return aText.replace("#" + aIndex, aValue);
  1.1048 +}
  1.1049 +
  1.1050 +/**
  1.1051 + * Perform the default action for the currently selected download item
  1.1052 + */
  1.1053 +function doDefaultForSelected()
  1.1054 +{
  1.1055 +  // Make sure we have something selected
  1.1056 +  let item = gDownloadsView.selectedItem;
  1.1057 +  if (!item)
  1.1058 +    return;
  1.1059 +
  1.1060 +  // Get the default action (first item in the menu)
  1.1061 +  let state = Number(item.getAttribute("state"));
  1.1062 +  let menuitem = document.getElementById(gContextMenus[state][0]);
  1.1063 +
  1.1064 +  // Try to do the action if the command is enabled
  1.1065 +  gDownloadViewController.doCommand(menuitem.getAttribute("cmd"), item);
  1.1066 +}
  1.1067 +
  1.1068 +function removeFromView(aDownload)
  1.1069 +{
  1.1070 +  // Make sure we have an item to remove
  1.1071 +  if (!aDownload) return;
  1.1072 +
  1.1073 +  let index = gDownloadsView.selectedIndex;
  1.1074 +  gDownloadsView.removeChild(aDownload);
  1.1075 +  gDownloadsView.selectedIndex = Math.min(index, gDownloadsView.itemCount - 1);
  1.1076 +
  1.1077 +  // We might have removed the last item, so update the clear list button
  1.1078 +  updateClearListButton();
  1.1079 +}
  1.1080 +
  1.1081 +function getReferrerOrSource(aDownload)
  1.1082 +{
  1.1083 +  // Give the referrer if we have it set
  1.1084 +  if (aDownload.hasAttribute("referrer"))
  1.1085 +    return aDownload.getAttribute("referrer");
  1.1086 +
  1.1087 +  // Otherwise, provide the source
  1.1088 +  return aDownload.getAttribute("uri");
  1.1089 +}
  1.1090 +
  1.1091 +/**
  1.1092 + * Initiate building the download list to have the active downloads followed by
  1.1093 + * completed ones filtered by the search term if necessary.
  1.1094 + *
  1.1095 + * @param aForceBuild
  1.1096 + *        Force the list to be built even if the search terms don't change
  1.1097 + */
  1.1098 +function buildDownloadList(aForceBuild)
  1.1099 +{
  1.1100 +  // Stringify the previous search
  1.1101 +  let prevSearch = gSearchTerms.join(" ");
  1.1102 +
  1.1103 +  // Array of space-separated lower-case search terms
  1.1104 +  gSearchTerms = gSearchBox.value.replace(/^\s+|\s+$/g, "").
  1.1105 +                 toLowerCase().split(/\s+/);
  1.1106 +
  1.1107 +  // Unless forced, don't rebuild the download list if the search didn't change
  1.1108 +  if (!aForceBuild && gSearchTerms.join(" ") == prevSearch)
  1.1109 +    return;
  1.1110 +
  1.1111 +  // Clear out values before using them
  1.1112 +  clearTimeout(gBuilder);
  1.1113 +  gStmt.reset();
  1.1114 +
  1.1115 +  // Clear the list before adding items by replacing with a shallow copy
  1.1116 +  let (empty = gDownloadsView.cloneNode(false)) {
  1.1117 +    gDownloadsView.parentNode.replaceChild(empty, gDownloadsView);
  1.1118 +    gDownloadsView = empty;
  1.1119 +  }
  1.1120 +
  1.1121 +  try {
  1.1122 +    gStmt.bindByIndex(0, nsIDM.DOWNLOAD_NOTSTARTED);
  1.1123 +    gStmt.bindByIndex(1, nsIDM.DOWNLOAD_DOWNLOADING);
  1.1124 +    gStmt.bindByIndex(2, nsIDM.DOWNLOAD_PAUSED);
  1.1125 +    gStmt.bindByIndex(3, nsIDM.DOWNLOAD_QUEUED);
  1.1126 +    gStmt.bindByIndex(4, nsIDM.DOWNLOAD_SCANNING);
  1.1127 +  } catch (e) {
  1.1128 +    // Something must have gone wrong when binding, so clear and quit
  1.1129 +    gStmt.reset();
  1.1130 +    return;
  1.1131 +  }
  1.1132 +
  1.1133 +  // Take a quick break before we actually start building the list
  1.1134 +  gBuilder = setTimeout(function() {
  1.1135 +    // Start building the list
  1.1136 +    stepListBuilder(1);
  1.1137 +
  1.1138 +    // We just tried to add a single item, so we probably need to enable
  1.1139 +    updateClearListButton();
  1.1140 +  }, 0);
  1.1141 +}
  1.1142 +
  1.1143 +/**
  1.1144 + * Incrementally build the download list by adding at most the requested number
  1.1145 + * of items if there are items to add. After doing that, it will schedule
  1.1146 + * another chunk of items specified by gListBuildDelay and gListBuildChunk.
  1.1147 + *
  1.1148 + * @param aNumItems
  1.1149 + *        Number of items to add to the list before taking a break
  1.1150 + */
  1.1151 +function stepListBuilder(aNumItems) {
  1.1152 +  try {
  1.1153 +    // If we're done adding all items, we can quit
  1.1154 +    if (!gStmt.executeStep()) {
  1.1155 +      // Send a notification that we finished, but wait for clear list to update
  1.1156 +      updateClearListButton();
  1.1157 +      setTimeout(function() Cc["@mozilla.org/observer-service;1"].
  1.1158 +        getService(Ci.nsIObserverService).
  1.1159 +        notifyObservers(window, "download-manager-ui-done", null), 0);
  1.1160 +
  1.1161 +      return;
  1.1162 +    }
  1.1163 +
  1.1164 +    // Try to get the attribute values from the statement
  1.1165 +    let attrs = {
  1.1166 +      dlid: gStmt.getInt64(0),
  1.1167 +      file: gStmt.getString(1),
  1.1168 +      target: gStmt.getString(2),
  1.1169 +      uri: gStmt.getString(3),
  1.1170 +      state: gStmt.getInt32(4),
  1.1171 +      startTime: Math.round(gStmt.getInt64(5) / 1000),
  1.1172 +      endTime: Math.round(gStmt.getInt64(6) / 1000),
  1.1173 +      currBytes: gStmt.getInt64(8),
  1.1174 +      maxBytes: gStmt.getInt64(9)
  1.1175 +    };
  1.1176 +
  1.1177 +    // Only add the referrer if it's not null
  1.1178 +    let (referrer = gStmt.getString(7)) {
  1.1179 +      if (referrer)
  1.1180 +        attrs.referrer = referrer;
  1.1181 +    }
  1.1182 +
  1.1183 +    // If the download is active, grab the real progress, otherwise default 100
  1.1184 +    let isActive = gStmt.getInt32(10);
  1.1185 +    attrs.progress = isActive ? gDownloadManager.getDownload(attrs.dlid).
  1.1186 +      percentComplete : 100;
  1.1187 +
  1.1188 +    // Make the item and add it to the end if it's active or matches the search
  1.1189 +    let item = createDownloadItem(attrs);
  1.1190 +    if (item && (isActive || downloadMatchesSearch(item))) {
  1.1191 +      // Add item to the end
  1.1192 +      gDownloadsView.appendChild(item);
  1.1193 +    
  1.1194 +      // Because of the joys of XBL, we can't update the buttons until the
  1.1195 +      // download object is in the document.
  1.1196 +      updateButtons(item);
  1.1197 +    } else {
  1.1198 +      // We didn't add an item, so bump up the number of items to process, but
  1.1199 +      // not a whole number so that we eventually do pause for a chunk break
  1.1200 +      aNumItems += .9;
  1.1201 +    }
  1.1202 +  } catch (e) {
  1.1203 +    // Something went wrong when stepping or getting values, so clear and quit
  1.1204 +    gStmt.reset();
  1.1205 +    return;
  1.1206 +  }
  1.1207 +
  1.1208 +  // Add another item to the list if we should; otherwise, let the UI update
  1.1209 +  // and continue later
  1.1210 +  if (aNumItems > 1) {
  1.1211 +    stepListBuilder(aNumItems - 1);
  1.1212 +  } else {
  1.1213 +    // Use a shorter delay for earlier downloads to display them faster
  1.1214 +    let delay = Math.min(gDownloadsView.itemCount * 10, gListBuildDelay);
  1.1215 +    gBuilder = setTimeout(stepListBuilder, delay, gListBuildChunk);
  1.1216 +  }
  1.1217 +}
  1.1218 +
  1.1219 +/**
  1.1220 + * Add a download to the front of the download list
  1.1221 + *
  1.1222 + * @param aDownload
  1.1223 + *        The nsIDownload to make into a richlistitem
  1.1224 + */
  1.1225 +function prependList(aDownload)
  1.1226 +{
  1.1227 +  let attrs = {
  1.1228 +    dlid: aDownload.id,
  1.1229 +    file: aDownload.target.spec,
  1.1230 +    target: aDownload.displayName,
  1.1231 +    uri: aDownload.source.spec,
  1.1232 +    state: aDownload.state,
  1.1233 +    progress: aDownload.percentComplete,
  1.1234 +    startTime: Math.round(aDownload.startTime / 1000),
  1.1235 +    endTime: Date.now(),
  1.1236 +    currBytes: aDownload.amountTransferred,
  1.1237 +    maxBytes: aDownload.size
  1.1238 +  };
  1.1239 +
  1.1240 +  // Make the item and add it to the beginning
  1.1241 +  let item = createDownloadItem(attrs);
  1.1242 +  if (item) {
  1.1243 +    // Add item to the beginning
  1.1244 +    gDownloadsView.insertBefore(item, gDownloadsView.firstChild);
  1.1245 +    
  1.1246 +    // Because of the joys of XBL, we can't update the buttons until the
  1.1247 +    // download object is in the document.
  1.1248 +    updateButtons(item);
  1.1249 +
  1.1250 +    // We might have added an item to an empty list, so update button
  1.1251 +    updateClearListButton();
  1.1252 +  }
  1.1253 +}
  1.1254 +
  1.1255 +/**
  1.1256 + * Check if the download matches the current search term based on the texts
  1.1257 + * shown to the user. All search terms are checked to see if each matches any
  1.1258 + * of the displayed texts.
  1.1259 + *
  1.1260 + * @param aItem
  1.1261 + *        Download richlistitem to check if it matches the current search
  1.1262 + * @return Boolean true if it matches the search; false otherwise
  1.1263 + */
  1.1264 +function downloadMatchesSearch(aItem)
  1.1265 +{
  1.1266 +  // Search through the download attributes that are shown to the user and
  1.1267 +  // make it into one big string for easy combined searching
  1.1268 +  let combinedSearch = "";
  1.1269 +  for each (let attr in gSearchAttributes)
  1.1270 +    combinedSearch += aItem.getAttribute(attr).toLowerCase() + " ";
  1.1271 +
  1.1272 +  // Make sure each of the terms are found
  1.1273 +  for each (let term in gSearchTerms)
  1.1274 +    if (combinedSearch.indexOf(term) == -1)
  1.1275 +      return false;
  1.1276 +
  1.1277 +  return true;
  1.1278 +}
  1.1279 +
  1.1280 +// we should be using real URLs all the time, but until
  1.1281 +// bug 239948 is fully fixed, this will do...
  1.1282 +//
  1.1283 +// note, this will thrown an exception if the native path
  1.1284 +// is not valid (for example a native Windows path on a Mac)
  1.1285 +// see bug #392386 for details
  1.1286 +function getLocalFileFromNativePathOrUrl(aPathOrUrl)
  1.1287 +{
  1.1288 +  if (aPathOrUrl.substring(0,7) == "file://") {
  1.1289 +    // if this is a URL, get the file from that
  1.1290 +    let ioSvc = Cc["@mozilla.org/network/io-service;1"].
  1.1291 +                getService(Ci.nsIIOService);
  1.1292 +
  1.1293 +    // XXX it's possible that using a null char-set here is bad
  1.1294 +    const fileUrl = ioSvc.newURI(aPathOrUrl, null, null).
  1.1295 +                    QueryInterface(Ci.nsIFileURL);
  1.1296 +    return fileUrl.file.clone().QueryInterface(Ci.nsILocalFile);
  1.1297 +  } else {
  1.1298 +    // if it's a pathname, create the nsILocalFile directly
  1.1299 +    var f = new nsLocalFile(aPathOrUrl);
  1.1300 +
  1.1301 +    return f;
  1.1302 +  }
  1.1303 +}
  1.1304 +
  1.1305 +/**
  1.1306 + * Update the disabled state of the clear list button based on whether or not
  1.1307 + * there are items in the list that can potentially be removed.
  1.1308 + */
  1.1309 +function updateClearListButton()
  1.1310 +{
  1.1311 +  let button = document.getElementById("clearListButton");
  1.1312 +  // The button is enabled if we have items in the list and we can clean up
  1.1313 +  button.disabled = !(gDownloadsView.itemCount && gDownloadManager.canCleanUp);
  1.1314 +}
  1.1315 +
  1.1316 +function getDownload(aID)
  1.1317 +{
  1.1318 +  return document.getElementById("dl" + aID);
  1.1319 +}
  1.1320 +
  1.1321 +/**
  1.1322 + * Initialize the statement which is used to retrieve the list of downloads.
  1.1323 + */
  1.1324 +function initStatement()
  1.1325 +{
  1.1326 +  if (gStmt)
  1.1327 +    gStmt.finalize();
  1.1328 +
  1.1329 +  gStmt = gDownloadManager.DBConnection.createStatement(
  1.1330 +    "SELECT id, target, name, source, state, startTime, endTime, referrer, " +
  1.1331 +           "currBytes, maxBytes, state IN (?1, ?2, ?3, ?4, ?5) isActive " +
  1.1332 +    "FROM moz_downloads " +
  1.1333 +    "ORDER BY isActive DESC, endTime DESC, startTime DESC");
  1.1334 +}

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