gecko-dev/browser/components/downloads/DownloadsViewUI.jsm
Kris Maglione e930b89c34 Bug 1514594: Part 3 - Change ChromeUtils.import API.
***
Bug 1514594: Part 3a - Change ChromeUtils.import to return an exports object; not pollute global. r=mccr8

This changes the behavior of ChromeUtils.import() to return an exports object,
rather than a module global, in all cases except when `null` is passed as a
second argument, and changes the default behavior not to pollute the global
scope with the module's exports. Thus, the following code written for the old
model:

  ChromeUtils.import("resource://gre/modules/Services.jsm");

is approximately the same as the following, in the new model:

  var {Services} = ChromeUtils.import("resource://gre/modules/Services.jsm");

Since the two behaviors are mutually incompatible, this patch will land with a
scripted rewrite to update all existing callers to use the new model rather
than the old.
***
Bug 1514594: Part 3b - Mass rewrite all JS code to use the new ChromeUtils.import API. rs=Gijs

This was done using the followng script:

https://bitbucket.org/kmaglione/m-c-rewrites/src/tip/processors/cu-import-exports.jsm
***
Bug 1514594: Part 3c - Update ESLint plugin for ChromeUtils.import API changes. r=Standard8

Differential Revision: https://phabricator.services.mozilla.com/D16747
***
Bug 1514594: Part 3d - Remove/fix hundreds of duplicate imports from sync tests. r=Gijs

Differential Revision: https://phabricator.services.mozilla.com/D16748
***
Bug 1514594: Part 3e - Remove no-op ChromeUtils.import() calls. r=Gijs

Differential Revision: https://phabricator.services.mozilla.com/D16749
***
Bug 1514594: Part 3f.1 - Cleanup various test corner cases after mass rewrite. r=Gijs
***
Bug 1514594: Part 3f.2 - Cleanup various non-test corner cases after mass rewrite. r=Gijs

Differential Revision: https://phabricator.services.mozilla.com/D16750

--HG--
extra : rebase_source : 359574ee3064c90f33bf36c2ebe3159a24cc8895
extra : histedit_source : b93c8f42808b1599f9122d7842d2c0b3e656a594%2C64a3a4e3359dc889e2ab2b49461bab9e27fc10a7
2019-01-17 10:18:31 -08:00

733 lines
28 KiB
JavaScript

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* This module is imported by code that uses the "download.xml" binding, and
* provides prototypes for objects that handle input and display information.
*/
"use strict";
var EXPORTED_SYMBOLS = [
"DownloadsViewUI",
];
const {XPCOMUtils} = ChromeUtils.import("resource://gre/modules/XPCOMUtils.jsm");
XPCOMUtils.defineLazyModuleGetters(this, {
BrowserWindowTracker: "resource:///modules/BrowserWindowTracker.jsm",
Downloads: "resource://gre/modules/Downloads.jsm",
DownloadUtils: "resource://gre/modules/DownloadUtils.jsm",
DownloadsCommon: "resource:///modules/DownloadsCommon.jsm",
FileUtils: "resource://gre/modules/FileUtils.jsm",
OS: "resource://gre/modules/osfile.jsm",
});
const HTML_NS = "http://www.w3.org/1999/xhtml";
var gDownloadElementButtons = {
cancel: {
commandName: "downloadsCmd_cancel",
l10nId: "download-cancel",
descriptionL10nId: "download-cancel-description",
iconClass: "downloadIconCancel",
},
retry: {
commandName: "downloadsCmd_retry",
l10nId: "download-retry",
descriptionL10nId: "download-retry-description",
iconClass: "downloadIconRetry",
},
show: {
commandName: "downloadsCmd_show",
l10nId: "download-show",
descriptionL10nId: "download-show-description",
iconClass: "downloadIconShow",
},
subviewOpenOrRemoveFile: {
commandName: "downloadsCmd_showBlockedInfo",
l10nId: "download-open-or-remove-file",
descriptionL10nId: "download-show-more-information-description",
iconClass: "downloadIconSubviewArrow",
},
askOpenOrRemoveFile: {
commandName: "downloadsCmd_chooseOpen",
l10nId: "download-open-or-remove-file",
iconClass: "downloadIconShow",
},
askRemoveFileOrAllow: {
commandName: "downloadsCmd_chooseUnblock",
l10nId: "download-remove-file-or-allow",
iconClass: "downloadIconShow",
},
removeFile: {
commandName: "downloadsCmd_confirmBlock",
l10nId: "download-remove-file",
iconClass: "downloadIconCancel",
},
};
/**
* Associates each document with a pre-built DOM fragment representing the
* download list item. This is then cloned to create each individual list item.
* This is stored on the document to prevent leaks that would occur if a single
* instance created by one document's DOMParser was stored globally.
*/
var gDownloadListItemFragments = new WeakMap();
var DownloadsViewUI = {
/**
* Returns true if the given string is the name of a command that can be
* handled by the Downloads user interface, including standard commands.
*/
isCommandName(name) {
return name.startsWith("cmd_") || name.startsWith("downloadsCmd_");
},
/**
* Returns the user-facing label for the given Download object. This is
* normally the leaf name of the download target file. In case this is a very
* old history download for which the target file is unknown, the download
* source URI is displayed.
*/
getDisplayName(download) {
return download.target.path ? OS.Path.basename(download.target.path)
: download.source.url;
},
/**
* Given a Download object, returns a string representing its file size with
* an appropriate measurement unit, for example "1.5 MB", or an empty string
* if the size is unknown.
*/
getSizeWithUnits(download) {
if (download.target.size === undefined) {
return "";
}
let [size, unit] = DownloadUtils.convertByteUnits(download.target.size);
return DownloadsCommon.strings.sizeWithUnits(size, unit);
},
};
this.DownloadsViewUI.BaseView = class {
canClearDownloads(nodeContainer) {
// Downloads can be cleared if there's at least one removable download in
// the list (either a history download or a completed session download).
// Because history downloads are always removable and are listed after the
// session downloads, check from bottom to top.
for (let elt = nodeContainer.lastChild; elt; elt = elt.previousSibling) {
// Stopped, paused, and failed downloads with partial data are removed.
let download = elt._shell.download;
if (download.stopped && !(download.canceled && download.hasPartialData)) {
return true;
}
}
return false;
}
};
/**
* A download element shell is responsible for handling the commands and the
* displayed data for a single element that uses the "download.xml" binding.
*
* The information to display is obtained through the associated Download object
* from the JavaScript API for downloads, and commands are executed using a
* combination of Download methods and DownloadsCommon.jsm helper functions.
*
* Specialized versions of this shell must be defined, and they are required to
* implement the "download" property or getter. Currently these objects are the
* HistoryDownloadElementShell and the DownloadsViewItem for the panel. The
* history view may use a HistoryDownload object in place of a Download object.
*/
this.DownloadsViewUI.DownloadElementShell = function() {};
this.DownloadsViewUI.DownloadElementShell.prototype = {
/**
* The richlistitem for the download, initialized by the derived object.
*/
element: null,
/**
* Manages the "active" state of the shell. By default all the shells are
* inactive, thus their UI is not updated. They must be activated when
* entering the visible area.
*/
ensureActive() {
if (!this._active) {
this._active = true;
this.connect();
this.onChanged();
}
},
get active() {
return !!this._active;
},
connect() {
let document = this.element.ownerDocument;
let downloadListItemFragment = gDownloadListItemFragments.get(document);
if (!downloadListItemFragment) {
let MozXULElement = document.defaultView.MozXULElement;
downloadListItemFragment = MozXULElement.parseXULToFragment(`
<hbox class="downloadMainArea" flex="1" align="center">
<stack>
<image class="downloadTypeIcon" validate="always"/>
<image class="downloadBlockedBadge" />
</stack>
<vbox class="downloadContainer" flex="1" pack="center">
<description class="downloadTarget" crop="center"/>
<description class="downloadDetails downloadDetailsNormal"
crop="end"/>
<description class="downloadDetails downloadDetailsHover"
crop="end"/>
<description class="downloadDetails downloadDetailsButtonHover"
crop="end"/>
</vbox>
</hbox>
<toolbarseparator />
<button class="downloadButton"
oncommand="DownloadsView.onDownloadButton(event);"/>
`);
gDownloadListItemFragments.set(document, downloadListItemFragment);
}
this.element.setAttribute("active", true);
this.element.setAttribute("orient", "horizontal");
this.element.setAttribute("onclick",
"DownloadsView.onDownloadClick(event);");
this.element.appendChild(document.importNode(downloadListItemFragment,
true));
for (let [propertyName, selector] of [
["_downloadTypeIcon", ".downloadTypeIcon"],
["_downloadTarget", ".downloadTarget"],
["_downloadDetailsNormal", ".downloadDetailsNormal"],
["_downloadDetailsHover", ".downloadDetailsHover"],
["_downloadDetailsButtonHover", ".downloadDetailsButtonHover"],
["_downloadButton", ".downloadButton"],
]) {
this[propertyName] = this.element.querySelector(selector);
}
// HTML elements can be created directly without using parseXULToFragment.
let progress = this._downloadProgress =
document.createElementNS(HTML_NS, "progress");
progress.className = "downloadProgress";
progress.setAttribute("max", "100");
this._downloadTarget.insertAdjacentElement("afterend", progress);
},
/**
* Returns a string from the downloads stringbundleset, which contains legacy
* strings that are loaded from DTD files instead of properties files. This
* won't be necessary once localization is converted to Fluent (bug 1452637).
*/
string(l10nId) {
// These strings are not used often enough to require caching.
return this.element.ownerDocument.getElementById("downloadsStrings")
.getAttribute("string-" + l10nId);
},
/**
* URI string for the file type icon displayed in the download element.
*/
get image() {
if (!this.download.target.path) {
// Old history downloads may not have a target path.
return "moz-icon://.unknown?size=32";
}
// When a download that was previously in progress finishes successfully, it
// means that the target file now exists and we can extract its specific
// icon, for example from a Windows executable. To ensure that the icon is
// reloaded, however, we must change the URI used by the XUL image element,
// for example by adding a query parameter. This only works if we add one of
// the parameters explicitly supported by the nsIMozIconURI interface.
return "moz-icon://" + this.download.target.path + "?size=32" +
(this.download.succeeded ? "&state=normal" : "");
},
get browserWindow() {
return BrowserWindowTracker.getTopWindow();
},
/**
* Updates the display name and icon.
*
* @param displayName
* This is usually the full file name of the download without the path.
* @param icon
* URL of the icon to load, generally from the "image" property.
*/
showDisplayNameAndIcon(displayName, icon) {
this._downloadTarget.setAttribute("value", displayName);
this._downloadTarget.setAttribute("tooltiptext", displayName);
this._downloadTypeIcon.setAttribute("src", icon);
},
/**
* Updates the displayed progress bar.
*
* @param mode
* Either "normal" or "undetermined".
* @param value
* Percentage of the progress bar to display, from 0 to 100.
* @param paused
* True to display the progress bar style for paused downloads.
*/
showProgress(mode, value, paused) {
if (mode == "undetermined") {
this._downloadProgress.removeAttribute("value");
} else {
this._downloadProgress.setAttribute("value", value);
}
this._downloadProgress.toggleAttribute("paused", !!paused);
},
/**
* Updates the full status line.
*
* @param status
* Status line of the Downloads Panel or the Downloads View.
* @param hoverStatus
* Label to show in the Downloads Panel when the mouse pointer is over
* the main area of the item. If not specified, this will be the same
* as the status line. This is ignored in the Downloads View.
*/
showStatus(status, hoverStatus = status) {
this._downloadDetailsNormal.setAttribute("value", status);
this._downloadDetailsNormal.setAttribute("tooltiptext", status);
this._downloadDetailsHover.setAttribute("value", hoverStatus);
},
/**
* Updates the status line combining the given state label with other labels.
*
* @param stateLabel
* Label representing the state of the download, for example "Failed".
* In the Downloads Panel, this is the only text displayed when the
* the mouse pointer is not over the main area of the item. In the
* Downloads View, this label is combined with the host and date, for
* example "Failed - example.com - 1:45 PM".
* @param hoverStatus
* Label to show in the Downloads Panel when the mouse pointer is over
* the main area of the item. If not specified, this will be the
* state label combined with the host and date. This is ignored in the
* Downloads View.
*/
showStatusWithDetails(stateLabel, hoverStatus) {
let [displayHost] =
DownloadUtils.getURIHost(this.download.source.referrer ||
this.download.source.url);
let [displayDate] =
DownloadUtils.getReadableDates(new Date(this.download.endTime));
let firstPart =
DownloadsCommon.strings.statusSeparator(stateLabel, displayHost);
let fullStatus =
DownloadsCommon.strings.statusSeparator(firstPart, displayDate);
if (!this.isPanel) {
this.showStatus(fullStatus);
} else {
this.showStatus(stateLabel, hoverStatus || fullStatus);
}
},
/**
* Updates the main action button and makes it visible.
*
* @param type
* One of the presets defined in gDownloadElementButtons.
*/
showButton(type) {
let { commandName, l10nId, descriptionL10nId,
iconClass } = gDownloadElementButtons[type];
this.buttonCommandName = commandName;
let labelAttribute = this.isPanel ? "aria-label" : "tooltiptext";
this._downloadButton.setAttribute(labelAttribute, this.string(l10nId));
if (this.isPanel && descriptionL10nId) {
this._downloadDetailsButtonHover.setAttribute("value",
this.string(descriptionL10nId));
}
this._downloadButton.setAttribute("class", "downloadButton " + iconClass);
this._downloadButton.removeAttribute("hidden");
},
hideButton() {
this._downloadButton.setAttribute("hidden", "true");
},
lastEstimatedSecondsLeft: Infinity,
/**
* This is called when a major state change occurs in the download, but is not
* called for every progress update in order to improve performance.
*/
_updateState() {
this.showDisplayNameAndIcon(DownloadsViewUI.getDisplayName(this.download),
this.image);
this.element.setAttribute("state",
DownloadsCommon.stateOfDownload(this.download));
if (!this.download.stopped) {
// When the download becomes in progress, we make all the major changes to
// the user interface here. The _updateStateInner function takes care of
// displaying the right button type for all other state changes.
this.showButton("cancel");
}
// Since state changed, reset the time left estimation.
this.lastEstimatedSecondsLeft = Infinity;
this._updateStateInner();
},
/**
* This is called for all changes in the download, including progress updates.
* For major state changes, _updateState is called first, but several elements
* are still updated here. When the download is in progress, this function
* takes a faster path with less element updates to improve performance.
*/
_updateStateInner() {
let progressPaused = false;
if (!this.download.stopped) {
// The download is in progress, so we don't change the button state
// because the _updateState function already did it. We still need to
// update all elements that may change during the download.
let totalBytes = this.download.hasProgress ? this.download.totalBytes
: -1;
let [status, newEstimatedSecondsLeft] = DownloadUtils.getDownloadStatus(
this.download.currentBytes,
totalBytes,
this.download.speed,
this.lastEstimatedSecondsLeft);
this.lastEstimatedSecondsLeft = newEstimatedSecondsLeft;
this.showStatus(status);
} else {
let verdict = "";
// The download is not in progress, so we update the user interface based
// on other properties. The order in which we check the properties of the
// Download object is the same used by stateOfDownload.
if (this.download.succeeded) {
if (this.download.target.exists) {
// This is a completed download, and the target file still exists.
this.element.setAttribute("exists", "true");
let sizeWithUnits = DownloadsViewUI.getSizeWithUnits(this.download);
if (this.isPanel) {
// In the Downloads Panel, we show the file size after the state
// label, for example "Completed - 1.5 MB". When the pointer is over
// the main area of the item, this label is replaced with a
// description of the default action, which opens the file.
let status = DownloadsCommon.strings.stateCompleted;
if (sizeWithUnits) {
status = DownloadsCommon.strings.statusSeparator(status,
sizeWithUnits);
}
this.showStatus(status,
this.string("download-open-file-description"));
} else {
// In the Downloads View, we show the file size in place of the
// state label, for example "1.5 MB - example.com - 1:45 PM".
this.showStatusWithDetails(sizeWithUnits ||
DownloadsCommon.strings.sizeUnknown);
}
this.showButton("show");
} else {
// This is a completed download, but the target file does not exist
// anymore, so the main action of opening the file is unavailable.
this.element.removeAttribute("exists");
let label = DownloadsCommon.strings.fileMovedOrMissing;
this.showStatusWithDetails(label, label);
this.hideButton();
}
} else if (this.download.error) {
if (this.download.error.becauseBlockedByParentalControls) {
// This download was blocked permanently by parental controls.
this.showStatusWithDetails(
DownloadsCommon.strings.stateBlockedParentalControls);
this.hideButton();
} else if (this.download.error.becauseBlockedByReputationCheck) {
verdict = this.download.error.reputationCheckVerdict;
let hover = "";
if (!this.download.hasBlockedData) {
// This download was blocked permanently by reputation check.
this.hideButton();
} else if (this.isPanel) {
// This download was blocked temporarily by reputation check. In the
// Downloads Panel, a subview can be used to remove the file or open
// the download anyways.
this.showButton("subviewOpenOrRemoveFile");
hover = this.string("download-show-more-information-description");
} else {
// This download was blocked temporarily by reputation check. In the
// Downloads View, the interface depends on the threat severity.
switch (verdict) {
case Downloads.Error.BLOCK_VERDICT_UNCOMMON:
this.showButton("askOpenOrRemoveFile");
break;
case Downloads.Error.BLOCK_VERDICT_POTENTIALLY_UNWANTED:
this.showButton("askRemoveFileOrAllow");
break;
default: // Assume Downloads.Error.BLOCK_VERDICT_MALWARE
this.showButton("removeFile");
break;
}
}
this.showStatusWithDetails(this.rawBlockedTitleAndDetails[0], hover);
} else {
// This download failed without being blocked, and can be restarted.
this.showStatusWithDetails(DownloadsCommon.strings.stateFailed);
this.showButton("retry");
}
} else if (this.download.canceled) {
if (this.download.hasPartialData) {
// This download was paused. The main action button will cancel the
// download, and in both the Downloads Panel and the Downlods View the
// status includes the size, for example "Paused - 1.1 MB".
let totalBytes =
this.download.hasProgress ? this.download.totalBytes : -1;
let transfer =
DownloadUtils.getTransferTotal(this.download.currentBytes,
totalBytes);
this.showStatus(DownloadsCommon.strings.statusSeparatorBeforeNumber(
DownloadsCommon.strings.statePaused, transfer));
this.showButton("cancel");
progressPaused = true;
} else {
// This download was canceled.
this.showStatusWithDetails(DownloadsCommon.strings.stateCanceled);
this.showButton("retry");
}
} else {
// This download was added to the global list before it started. While
// we still support this case, at the moment it can only be triggered by
// internally developed add-ons and regression tests, and should not
// happen unless there is a bug. This means the stateStarting string can
// probably be removed when converting the localization to Fluent.
this.showStatus(DownloadsCommon.strings.stateStarting);
this.showButton("cancel");
}
// These attributes are only set in this slower code path, because they
// are irrelevant for downloads that are in progress.
if (verdict) {
this.element.setAttribute("verdict", verdict);
} else {
this.element.removeAttribute("verdict");
}
this.element.classList.toggle("temporary-block",
!!this.download.hasBlockedData);
}
// These attributes are set in all code paths, because they are relevant for
// downloads that are in progress and for other states.
if (this.download.hasProgress) {
this.showProgress("normal", this.download.progress, progressPaused);
} else {
this.showProgress("undetermined", 100, progressPaused);
}
},
/**
* Returns [title, [details1, details2]] for blocked downloads.
*/
get rawBlockedTitleAndDetails() {
let s = DownloadsCommon.strings;
if (!this.download.error ||
!this.download.error.becauseBlockedByReputationCheck) {
return [null, null];
}
switch (this.download.error.reputationCheckVerdict) {
case Downloads.Error.BLOCK_VERDICT_UNCOMMON:
return [s.blockedUncommon2, [s.unblockTypeUncommon2, s.unblockTip2]];
case Downloads.Error.BLOCK_VERDICT_POTENTIALLY_UNWANTED:
return [s.blockedPotentiallyUnwanted,
[s.unblockTypePotentiallyUnwanted2, s.unblockTip2]];
case Downloads.Error.BLOCK_VERDICT_MALWARE:
return [s.blockedMalware, [s.unblockTypeMalware, s.unblockTip2]];
}
throw new Error("Unexpected reputationCheckVerdict: " +
this.download.error.reputationCheckVerdict);
},
/**
* Shows the appropriate unblock dialog based on the verdict, and executes the
* action selected by the user in the dialog, which may involve unblocking,
* opening or removing the file.
*
* @param window
* The window to which the dialog should be anchored.
* @param dialogType
* Can be "unblock", "chooseUnblock", or "chooseOpen".
*/
confirmUnblock(window, dialogType) {
DownloadsCommon.confirmUnblockDownload({
verdict: this.download.error.reputationCheckVerdict,
window,
dialogType,
}).then(action => {
if (action == "open") {
return this.unblockAndOpenDownload();
} else if (action == "unblock") {
return this.download.unblock();
} else if (action == "confirmBlock") {
return this.download.confirmBlock();
}
return Promise.resolve();
}).catch(Cu.reportError);
},
/**
* Unblocks the downloaded file and opens it.
*
* @return A promise that's resolved after the file has been opened.
*/
unblockAndOpenDownload() {
return this.download.unblock().then(() => this.downloadsCmd_open());
},
/**
* Returns the name of the default command to use for the current state of the
* download, when there is a double click or another default interaction. If
* there is no default command for the current state, returns an empty string.
* The commands are implemented as functions on this object or derived ones.
*/
get currentDefaultCommandName() {
switch (DownloadsCommon.stateOfDownload(this.download)) {
case DownloadsCommon.DOWNLOAD_NOTSTARTED:
return "downloadsCmd_cancel";
case DownloadsCommon.DOWNLOAD_FAILED:
case DownloadsCommon.DOWNLOAD_CANCELED:
return "downloadsCmd_retry";
case DownloadsCommon.DOWNLOAD_PAUSED:
return "downloadsCmd_pauseResume";
case DownloadsCommon.DOWNLOAD_FINISHED:
return "downloadsCmd_open";
case DownloadsCommon.DOWNLOAD_BLOCKED_PARENTAL:
return "downloadsCmd_openReferrer";
case DownloadsCommon.DOWNLOAD_DIRTY:
return "downloadsCmd_showBlockedInfo";
}
return "";
},
/**
* Returns true if the specified command can be invoked on the current item.
* The commands are implemented as functions on this object or derived ones.
*
* @param aCommand
* Name of the command to check, for example "downloadsCmd_retry".
*/
isCommandEnabled(aCommand) {
switch (aCommand) {
case "downloadsCmd_retry":
return this.download.canceled || this.download.error;
case "downloadsCmd_pauseResume":
return this.download.hasPartialData && !this.download.error;
case "downloadsCmd_openReferrer":
return !!this.download.source.referrer;
case "downloadsCmd_confirmBlock":
case "downloadsCmd_chooseUnblock":
case "downloadsCmd_chooseOpen":
case "downloadsCmd_unblock":
case "downloadsCmd_unblockAndOpen":
return this.download.hasBlockedData;
case "downloadsCmd_cancel":
return this.download.hasPartialData || !this.download.stopped;
case "downloadsCmd_open":
// This property is false if the download did not succeed.
return this.download.target.exists;
case "downloadsCmd_show":
// TODO: Bug 827010 - Handle part-file asynchronously.
if (this.download.target.partFilePath) {
let partFile = new FileUtils.File(this.download.target.partFilePath);
if (partFile.exists()) {
return true;
}
}
// This property is false if the download did not succeed.
return this.download.target.exists;
case "downloadsCmd_delete":
case "cmd_delete":
// We don't want in-progress downloads to be removed accidentally.
return this.download.stopped;
}
return DownloadsViewUI.isCommandName(aCommand) && !!this[aCommand];
},
doCommand(aCommand) {
if (DownloadsViewUI.isCommandName(aCommand)) {
this[aCommand]();
}
},
onButton() {
this.doCommand(this.buttonCommandName);
},
downloadsCmd_cancel() {
// This is the correct way to avoid race conditions when cancelling.
this.download.cancel().catch(() => {});
this.download.removePartialData().catch(Cu.reportError);
},
downloadsCmd_confirmBlock() {
this.download.confirmBlock().catch(Cu.reportError);
},
downloadsCmd_open() {
let file = new FileUtils.File(this.download.target.path);
DownloadsCommon.openDownloadedFile(file, null, this.element.ownerGlobal);
},
downloadsCmd_openReferrer() {
this.element.ownerGlobal.openURL(this.download.source.referrer);
},
downloadsCmd_pauseResume() {
if (this.download.stopped) {
this.download.start();
} else {
this.download.cancel();
}
},
downloadsCmd_show() {
let file = new FileUtils.File(this.download.target.path);
DownloadsCommon.showDownloadedFile(file);
},
downloadsCmd_retry() {
if (this.download.start) {
// Errors when retrying are already reported as download failures.
this.download.start().catch(() => {});
return;
}
let window = this.browserWindow || this.element.ownerGlobal;
let document = window.document;
// Do not suggest a file name if we don't know the original target.
let targetPath = this.download.target.path ?
OS.Path.basename(this.download.target.path) : null;
window.DownloadURL(this.download.source.url, targetPath, document);
},
downloadsCmd_delete() {
// Alias for the 'cmd_delete' command, because it may clash with another
// controller which causes unexpected behavior as different codepaths claim
// ownership.
this.cmd_delete();
},
cmd_delete() {
DownloadsCommon.deleteDownload(this.download).catch(Cu.reportError);
},
};