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/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80 filetype=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/. */
/**
* Provides functions to handle status and messages in the user interface.
*/
"use strict";
this.EXPORTED_SYMBOLS = [
"DownloadUIHelper",
];
// Globals
const Cc = Components.classes;
const Ci = Components.interfaces;
const Cu = Components.utils;
const Cr = Components.results;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/AppConstants.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "OS",
"resource://gre/modules/osfile.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "Promise",
"resource://gre/modules/Promise.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "Services",
"resource://gre/modules/Services.jsm");
const kStringBundleUrl =
"chrome://mozapps/locale/downloads/downloads.properties";
const kStringsRequiringFormatting = {
fileExecutableSecurityWarning: true,
cancelDownloadsOKTextMultiple: true,
quitCancelDownloadsAlertMsgMultiple: true,
quitCancelDownloadsAlertMsgMacMultiple: true,
offlineCancelDownloadsAlertMsgMultiple: true,
leavePrivateBrowsingWindowsCancelDownloadsAlertMsgMultiple2: true
};
// DownloadUIHelper
/**
* Provides functions to handle status and messages in the user interface.
*/
this.DownloadUIHelper = {
/**
* Returns an object that can be used to display prompts related to downloads.
*
* The prompts may be either anchored to a specified window, or anchored to
* the most recently active window, for example if the prompt is displayed in
* response to global notifications that are not associated with any window.
*
* @param aParent
* If specified, should reference the nsIDOMWindow to which the prompts
* should be attached. If omitted, the prompts will be attached to the
* most recently active window.
*
* @return A DownloadPrompter object.
*/
getPrompter: function (aParent)
{
return new DownloadPrompter(aParent || null);
},
};
/**
* Returns an object whose keys are the string names from the downloads string
* bundle, and whose values are either the translated strings or functions
* returning formatted strings.
*/
XPCOMUtils.defineLazyGetter(DownloadUIHelper, "strings", function () {
let strings = {};
let sb = Services.strings.createBundle(kStringBundleUrl);
let enumerator = sb.getSimpleEnumeration();
while (enumerator.hasMoreElements()) {
let string = enumerator.getNext().QueryInterface(Ci.nsIPropertyElement);
let stringName = string.key;
if (stringName in kStringsRequiringFormatting) {
strings[stringName] = function () {
// Convert "arguments" to a real array before calling into XPCOM.
return sb.formatStringFromName(stringName,
Array.slice(arguments, 0),
arguments.length);
};
} else {
strings[stringName] = string.value;
}
}
return strings;
});
// DownloadPrompter
/**
* Allows displaying prompts related to downloads.
*
* @param aParent
* The nsIDOMWindow to which prompts should be attached, or null to
* attach prompts to the most recently active window.
*/
this.DownloadPrompter = function (aParent)
{
this._prompter = Services.ww.getNewPrompter(aParent);
}
this.DownloadPrompter.prototype = {
/**
* Constants with the different type of prompts.
*/
ON_QUIT: "prompt-on-quit",
ON_OFFLINE: "prompt-on-offline",
ON_LEAVE_PRIVATE_BROWSING: "prompt-on-leave-private-browsing",
/**
* nsIPrompt instance for displaying messages.
*/
_prompter: null,
/**
* Displays a warning message box that informs that the specified file is
* executable, and asks whether the user wants to launch it. The user is
* given the option of disabling future instances of this warning.
*
* @param aPath
* String containing the full path to the file to be opened.
*
* @return {Promise}
* @resolves Boolean indicating whether the launch operation can continue.
* @rejects JavaScript exception.
*/
confirmLaunchExecutable: function (aPath)
{
const kPrefAlertOnEXEOpen = "browser.download.manager.alertOnEXEOpen";
try {
// Always launch in case we have no prompter implementation.
if (!this._prompter) {
return Promise.resolve(true);
}
try {
if (!Services.prefs.getBoolPref(kPrefAlertOnEXEOpen)) {
return Promise.resolve(true);
}
} catch (ex) {
// If the preference does not exist, continue with the prompt.
}
let leafName = OS.Path.basename(aPath);
let s = DownloadUIHelper.strings;
let checkState = { value: false };
let shouldLaunch = this._prompter.confirmCheck(
s.fileExecutableSecurityWarningTitle,
s.fileExecutableSecurityWarning(leafName, leafName),
s.fileExecutableSecurityWarningDontAsk,
checkState);
if (shouldLaunch) {
Services.prefs.setBoolPref(kPrefAlertOnEXEOpen, !checkState.value);
}
return Promise.resolve(shouldLaunch);
} catch (ex) {
return Promise.reject(ex);
}
},
/**
* Displays a warning message box that informs that there are active
* downloads, and asks whether the user wants to cancel them or not.
*
* @param aDownloadsCount
* The current downloads count.
* @param aPromptType
* The type of prompt notification depending on the observer.
*
* @return False to cancel the downloads and continue, true to abort the
* operation.
*/
confirmCancelDownloads: function DP_confirmCancelDownload(aDownloadsCount,
aPromptType)
{
// Always continue in case we have no prompter implementation, or if there
// are no active downloads.
if (!this._prompter || aDownloadsCount <= 0) {
return false;
}
let s = DownloadUIHelper.strings;
let buttonFlags = (Ci.nsIPrompt.BUTTON_TITLE_IS_STRING * Ci.nsIPrompt.BUTTON_POS_0) +
(Ci.nsIPrompt.BUTTON_TITLE_IS_STRING * Ci.nsIPrompt.BUTTON_POS_1);
let okButton = aDownloadsCount > 1 ? s.cancelDownloadsOKTextMultiple(aDownloadsCount)
: s.cancelDownloadsOKText;
let title, message, cancelButton;
switch (aPromptType) {
case this.ON_QUIT:
title = s.quitCancelDownloadsAlertTitle;
if (AppConstants.platform != "macosx") {
message = aDownloadsCount > 1
? s.quitCancelDownloadsAlertMsgMultiple(aDownloadsCount)
: s.quitCancelDownloadsAlertMsg;
cancelButton = s.dontQuitButtonWin;
} else {
message = aDownloadsCount > 1
? s.quitCancelDownloadsAlertMsgMacMultiple(aDownloadsCount)
: s.quitCancelDownloadsAlertMsgMac;
cancelButton = s.dontQuitButtonMac;
}
break;
case this.ON_OFFLINE:
title = s.offlineCancelDownloadsAlertTitle;
message = aDownloadsCount > 1
? s.offlineCancelDownloadsAlertMsgMultiple(aDownloadsCount)
: s.offlineCancelDownloadsAlertMsg;
cancelButton = s.dontGoOfflineButton;
break;
case this.ON_LEAVE_PRIVATE_BROWSING:
title = s.leavePrivateBrowsingCancelDownloadsAlertTitle;
message = aDownloadsCount > 1
? s.leavePrivateBrowsingWindowsCancelDownloadsAlertMsgMultiple2(aDownloadsCount)
: s.leavePrivateBrowsingWindowsCancelDownloadsAlertMsg2;
cancelButton = s.dontLeavePrivateBrowsingButton2;
break;
}
let rv = this._prompter.confirmEx(title, message, buttonFlags, okButton,
cancelButton, null, null, {});
return (rv == 1);
}
};
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