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/* 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
const lazy = {};
ChromeUtils.defineESModuleGetters(lazy, {
});
XPCOMUtils.defineLazyServiceGetter(
lazy,
"gReputationService",
"@mozilla.org/reputationservice/application-reputation-service;1",
Ci.nsIApplicationReputationService
);
XPCOMUtils.defineLazyServiceGetter(
lazy,
"gMIMEService",
"@mozilla.org/mime;1",
Ci.nsIMIMEService
);
Integration.downloads.defineESModuleGetter(
lazy,
"DownloadIntegration",
);
// /////////////////////////////////////////////////////////////////////////////
// // Helper Functions
/**
* Determines if a given directory is able to be used to download to.
*
* @param aDirectory
* The directory to check.
* @return true if we can use the directory, false otherwise.
*/
function isUsableDirectory(aDirectory) {
return (
aDirectory.exists() && aDirectory.isDirectory() && aDirectory.isWritable()
);
}
// Web progress listener so we can detect errors while mLauncher is
// streaming the data to a temporary file.
function nsUnknownContentTypeDialogProgressListener(aHelperAppDialog) {
this.helperAppDlg = aHelperAppDialog;
}
nsUnknownContentTypeDialogProgressListener.prototype = {
// nsIWebProgressListener methods.
// Look for error notifications and display alert to user.
onStatusChange(aWebProgress, aRequest, aStatus, aMessage) {
if (aStatus != Cr.NS_OK) {
// Display error alert (using text supplied by back-end).
// FIXME this.dialog is undefined?
Services.prompt.alert(this.dialog, this.helperAppDlg.mTitle, aMessage);
// Close the dialog.
this.helperAppDlg.onCancel();
if (this.helperAppDlg.mDialog) {
this.helperAppDlg.mDialog.close();
}
}
},
// Ignore onProgressChange, onProgressChange64, onStateChange, onLocationChange, onSecurityChange, onContentBlockingEvent and onRefreshAttempted notifications.
onProgressChange() {},
onProgressChange64() {},
onStateChange() {},
onLocationChange() {},
onSecurityChange() {},
onContentBlockingEvent() {},
onRefreshAttempted() {
return true;
},
};
// /////////////////////////////////////////////////////////////////////////////
// // nsUnknownContentTypeDialog
/* This file implements the nsIHelperAppLauncherDialog interface.
*
* The implementation consists of a JavaScript "class" named nsUnknownContentTypeDialog,
* comprised of:
* - a JS constructor function
* - a prototype providing all the interface methods and implementation stuff
*/
const PREF_BD_USEDOWNLOADDIR = "browser.download.useDownloadDir";
const nsITimer = Ci.nsITimer;
/* ctor
*/
export function nsUnknownContentTypeDialog() {
// Initialize data properties.
this.mLauncher = null;
this.mContext = null;
this.mReason = null;
this.chosenApp = null;
this.givenDefaultApp = false;
this.updateSelf = true;
this.mTitle = "";
}
nsUnknownContentTypeDialog.prototype = {
classID: Components.ID("{F68578EB-6EC2-4169-AE19-8C6243F0ABE1}"),
nsIMIMEInfo: Ci.nsIMIMEInfo,
QueryInterface: ChromeUtils.generateQI([
"nsIHelperAppLauncherDialog",
"nsITimerCallback",
]),
// ---------- nsIHelperAppLauncherDialog methods ----------
// show: Open XUL dialog using window watcher. Since the dialog is not
// modal, it needs to be a top level window and the way to open
// one of those is via that route).
show(aLauncher, aContext, aReason) {
this.mLauncher = aLauncher;
this.mContext = aContext;
this.mReason = aReason;
// Cache some information in case this context goes away:
try {
let parent = aContext.getInterface(Ci.nsIDOMWindow);
this._mDownloadDir = new downloadModule.DownloadLastDir(parent);
} catch (ex) {
console.error(
"Missing window information when showing nsIHelperAppLauncherDialog:",
ex
);
}
const nsITimer = Ci.nsITimer;
this._showTimer = Cc["@mozilla.org/timer;1"].createInstance(nsITimer);
this._showTimer.initWithCallback(this, 0, nsITimer.TYPE_ONE_SHOT);
},
// When opening from new tab, if tab closes while dialog is opening,
// (which is a race condition on the XUL file being cached and the timer
// in nsExternalHelperAppService), the dialog gets a blur and doesn't
// activate the OK button. So we wait a bit before doing opening it.
reallyShow() {
try {
let docShell = this.mContext.getInterface(Ci.nsIDocShell);
let rootWin = docShell.browsingContext.topChromeWindow;
this.mDialog = Services.ww.openWindow(
rootWin,
null,
"chrome,centerscreen,titlebar,dialog=yes,dependent",
null
);
} catch (ex) {
// The containing window may have gone away. Break reference
// cycles and stop doing the download.
this.mLauncher.cancel(Cr.NS_BINDING_ABORTED);
return;
}
// Hook this object to the dialog.
this.mDialog.dialog = this;
// Hook up utility functions.
this.getSpecialFolderKey = this.mDialog.getSpecialFolderKey;
// Watch for error notifications.
var progressListener = new nsUnknownContentTypeDialogProgressListener(this);
this.mLauncher.setWebProgressListener(progressListener);
},
//
// displayBadPermissionAlert()
//
// Diplay an alert panel about the bad permission of folder/directory.
//
displayBadPermissionAlert() {
let bundle = Services.strings.createBundle(
);
Services.prompt.alert(
this.dialog,
bundle.GetStringFromName("badPermissions.title"),
bundle.GetStringFromName("badPermissions")
);
},
promptForSaveToFileAsync(
aLauncher,
aContext,
aDefaultFileName,
aSuggestedFileExtension,
aForcePrompt
) {
var result = null;
this.mLauncher = aLauncher;
let bundle = Services.strings.createBundle(
);
let parent;
let gDownloadLastDir;
try {
parent = aContext.getInterface(Ci.nsIDOMWindow);
} catch (ex) {}
if (parent) {
gDownloadLastDir = new downloadModule.DownloadLastDir(parent);
} else {
// Use the cached download info, but pick an arbitrary parent window
// because the original one is definitely gone (and nsIFilePicker doesn't like
// a null parent):
gDownloadLastDir = this._mDownloadDir;
for (let someWin of Services.wm.getEnumerator("")) {
// We need to make sure we don't end up with this dialog, because otherwise
// that's going to go away when the user clicks "Save", and that breaks the
// windows file picker that's supposed to show up if we let the user choose
// where to save files...
if (someWin != this.mDialog) {
parent = someWin;
}
}
if (!parent) {
console.error(
"No candidate parent windows were found for the save filepicker." +
"This should never happen."
);
}
}
(async () => {
if (!aForcePrompt) {
// Check to see if the user wishes to auto save to the default download
// folder without prompting. Note that preference might not be set.
let autodownload = Services.prefs.getBoolPref(
PREF_BD_USEDOWNLOADDIR,
false
);
if (autodownload) {
// Retrieve the user's default download directory
let preferredDir = await Downloads.getPreferredDownloadsDirectory();
let defaultFolder = new FileUtils.File(preferredDir);
try {
if (aDefaultFileName) {
result = this.validateLeafName(
defaultFolder,
aDefaultFileName,
aSuggestedFileExtension
);
}
} catch (ex) {
// When the default download directory is write-protected,
// prompt the user for a different target file.
}
// Check to make sure we have a valid directory, otherwise, prompt
if (result) {
// This path is taken when we have a writable default download directory.
aLauncher.saveDestinationAvailable(result);
return;
}
}
}
// Use file picker to show dialog.
var nsIFilePicker = Ci.nsIFilePicker;
var picker =
Cc["@mozilla.org/filepicker;1"].createInstance(nsIFilePicker);
var windowTitle = bundle.GetStringFromName("saveDialogTitle");
picker.init(parent.browsingContext, windowTitle, nsIFilePicker.modeSave);
if (aDefaultFileName) {
picker.defaultString = this.getFinalLeafName(aDefaultFileName);
}
if (aSuggestedFileExtension) {
// aSuggestedFileExtension includes the period, so strip it
picker.defaultExtension = aSuggestedFileExtension.substring(1);
} else {
try {
picker.defaultExtension = this.mLauncher.MIMEInfo.primaryExtension;
} catch (ex) {}
}
var wildCardExtension = "*";
if (aSuggestedFileExtension) {
wildCardExtension += aSuggestedFileExtension;
picker.appendFilter(
this.mLauncher.MIMEInfo.description,
wildCardExtension
);
}
picker.appendFilters(nsIFilePicker.filterAll);
// Default to lastDir if it is valid, otherwise use the user's default
// downloads directory. getPreferredDownloadsDirectory should always
// return a valid directory path, so we can safely default to it.
let preferredDir = await Downloads.getPreferredDownloadsDirectory();
picker.displayDirectory = new FileUtils.File(preferredDir);
gDownloadLastDir.getFileAsync(aLauncher.source).then(lastDir => {
if (lastDir && isUsableDirectory(lastDir)) {
picker.displayDirectory = lastDir;
}
picker.open(returnValue => {
if (returnValue == nsIFilePicker.returnCancel) {
// null result means user cancelled.
aLauncher.saveDestinationAvailable(null);
return;
}
// Be sure to save the directory the user chose through the Save As...
// dialog as the new browser.download.dir since the old one
// didn't exist.
result = picker.file;
if (result) {
let allowOverwrite = false;
try {
// If we're overwriting, avoid renaming our file, and assume
// overwriting it does the right thing.
if (
result.exists() &&
this.getFinalLeafName(result.leafName, "", true) ==
result.leafName
) {
allowOverwrite = true;
}
} catch (ex) {
// As it turns out, the failure to remove the file, for example due to
// permission error, will be handled below eventually somehow.
}
var newDir = result.parent.QueryInterface(Ci.nsIFile);
// Do not store the last save directory as a pref inside the private browsing mode
gDownloadLastDir.setFile(aLauncher.source, newDir);
try {
result = this.validateLeafName(
newDir,
result.leafName,
null,
allowOverwrite,
true
);
} catch (ex) {
// When the chosen download directory is write-protected,
// display an informative error message.
// In all cases, download will be stopped.
if (ex.result == Cr.NS_ERROR_FILE_ACCESS_DENIED) {
this.displayBadPermissionAlert();
aLauncher.saveDestinationAvailable(null);
return;
}
}
}
// Don't pop up the downloads panel redundantly.
aLauncher.saveDestinationAvailable(result, true);
});
});
})().catch(console.error);
},
getFinalLeafName(aLeafName, aFileExt, aAfterFilePicker) {
return (
DownloadPaths.sanitize(aLeafName, {
compressWhitespaces: !aAfterFilePicker,
allowInvalidFilenames: aAfterFilePicker,
}) || "unnamed" + (aFileExt ? "." + aFileExt : "")
);
},
/**
* Ensures that a local folder/file combination does not already exist in
* the file system (or finds such a combination with a reasonably similar
* leaf name), creates the corresponding file, and returns it.
*
* @param aLocalFolder
* the folder where the file resides
* @param aLeafName
* the string name of the file (may be empty if no name is known,
* in which case a name will be chosen)
* @param aFileExt
* the extension of the file, if one is known; this will be ignored
* if aLeafName is non-empty
* @param aAllowExisting
* if set to true, avoid creating a unique file.
* @param aAfterFilePicker
* if set to true, this was a file entered by the user from a file picker.
* @return nsIFile
* the created file
* @throw an error such as permission doesn't allow creation of
* file, etc.
*/
validateLeafName(
aLocalFolder,
aLeafName,
aFileExt,
aAllowExisting = false,
aAfterFilePicker = false
) {
if (!(aLocalFolder && isUsableDirectory(aLocalFolder))) {
throw new Components.Exception(
"Destination directory non-existing or permission error",
Cr.NS_ERROR_FILE_ACCESS_DENIED
);
}
aLeafName = this.getFinalLeafName(aLeafName, aFileExt, aAfterFilePicker);
aLocalFolder.append(aLeafName);
if (!aAllowExisting) {
// The following assignment can throw an exception, but
// is now caught properly in the caller of validateLeafName.
var validatedFile = DownloadPaths.createNiceUniqueFile(aLocalFolder);
} else {
validatedFile = aLocalFolder;
}
return validatedFile;
},
// ---------- implementation methods ----------
// initDialog: Fill various dialog fields with initial content.
initDialog() {
// Put file name in window title.
var suggestedFileName = this.mLauncher.suggestedFileName;
this.mDialog.document.addEventListener("dialogaccept", this);
this.mDialog.document.addEventListener("dialogcancel", this);
let url = this.mLauncher.source;
if (url instanceof Ci.nsINestedURI) {
url = url.innermostURI;
}
let iconPath = "goat";
let fname = "";
if (suggestedFileName) {
fname = iconPath = suggestedFileName;
} else if (url instanceof Ci.nsIURL) {
// A url, use file name from it.
fname = iconPath = url.fileName;
} else if (["data", "blob"].includes(url.scheme)) {
// The path is useless for these, so use a reasonable default.
let { MIMEType } = this.mLauncher.MIMEInfo;
fname = lazy.gMIMEService.getValidFileName(null, MIMEType, url, 0);
} else {
fname = url.pathQueryRef;
}
this.mSourcePath = url.prePath;
// Some URIs do not implement nsIURL, so we can't just QI.
if (url instanceof Ci.nsIURL) {
this.mSourcePath += url.directory;
} else {
// Don't make the url excessively long (e.g. for data URIs)
// (this doesn't use a temp var to avoid copying a potentially
// several mb-long string)
this.mSourcePath +=
url.pathQueryRef.length > 500
? url.pathQueryRef.substring(0, 500) + "\u2026"
: url.pathQueryRef;
}
var displayName = fname.replace(/ +/g, " ");
this.mTitle = this.dialogElement("strings").getFormattedString("title", [
displayName,
]);
this.mDialog.document.title = this.mTitle;
// Put content type, filename and location into intro.
this.initIntro(url, displayName);
var iconString =
"moz-icon://" +
iconPath +
"?size=16&contentType=" +
this.mLauncher.MIMEInfo.MIMEType;
this.dialogElement("contentTypeImage").setAttribute("src", iconString);
let dialog = this.mDialog.document.getElementById("unknownContentType");
// if always-save and is-executable and no-handler
// then set up simple ui
var mimeType = this.mLauncher.MIMEInfo.MIMEType;
let isPlain = mimeType == "text/plain";
this.isExemptExecutableExtension =
Services.policies.isExemptExecutableExtension(
url.spec,
fname?.split(".").at(-1)
);
var shouldntRememberChoice =
mimeType == "application/octet-stream" ||
mimeType == "application/x-msdownload" ||
(this.mLauncher.targetFileIsExecutable &&
!this.isExemptExecutableExtension) ||
// Do not offer to remember text/plain mimetype choices if the file
// isn't actually a 'plain' text file.
(isPlain && lazy.gReputationService.isBinary(suggestedFileName));
if (
(shouldntRememberChoice && !this.openWithDefaultOK()) ||
Services.prefs.getBoolPref("browser.download.forbid_open_with")
) {
// hide featured choice
this.dialogElement("normalBox").collapsed = true;
// show basic choice
this.dialogElement("basicBox").collapsed = false;
// change button labels and icons; use "save" icon for the accept
// button since it's the only action possible
let acceptButton = dialog.getButton("accept");
acceptButton.label = this.dialogElement("strings").getString(
"unknownAccept.label"
);
acceptButton.setAttribute("icon", "save");
dialog.getButton("cancel").label = this.dialogElement(
"strings"
).getString("unknownCancel.label");
// hide other handler
this.dialogElement("openHandler").collapsed = true;
// set save as the selected option
this.dialogElement("mode").selectedItem = this.dialogElement("save");
} else {
this.initInteractiveControls();
// Initialize "always ask me" box. This should always be disabled
// and set to true for the ambiguous type application/octet-stream.
// We don't also check for application/x-msdownload here since we
// want users to be able to autodownload .exe files.
var rememberChoice = this.dialogElement("rememberChoice");
// Just because we have a content-type of application/octet-stream
// here doesn't actually mean that the content is of that type. Many
// servers default to sending text/plain for file types they don't know
// about. To account for this, the uriloader does some checking to see
// if a file sent as text/plain contains binary characters, and if so (*)
// it morphs the content-type into application/octet-stream so that
// the file can be properly handled. Since this is not generic binary
// data, rather, a data format that the system probably knows about,
// we don't want to use the content-type provided by this dialog's
// opener, as that's the generic application/octet-stream that the
// uriloader has passed, rather we want to ask the MIME Service.
// This is so we don't needlessly disable the "autohandle" checkbox.
if (shouldntRememberChoice) {
rememberChoice.checked = false;
rememberChoice.hidden = true;
} else {
rememberChoice.checked =
!this.mLauncher.MIMEInfo.alwaysAskBeforeHandling &&
this.mLauncher.MIMEInfo.preferredAction !=
this.nsIMIMEInfo.handleInternally;
}
this.toggleRememberChoice(rememberChoice);
}
this.mDialog.setTimeout(function () {
this.dialog.postShowCallback();
}, 0);
this.delayHelper = new lazy.EnableDelayHelper({
disableDialog: () => {
dialog.getButton("accept").disabled = true;
},
enableDialog: () => {
dialog.getButton("accept").disabled = false;
},
focusTarget: this.mDialog,
});
},
notify(aTimer) {
if (aTimer == this._showTimer) {
if (!this.mDialog) {
this.reallyShow();
}
// The timer won't release us, so we have to release it.
this._showTimer = null;
} else if (aTimer == this._saveToDiskTimer) {
// Since saveToDisk may open a file picker and therefore block this routine,
// we should only call it once the dialog is closed.
this.mLauncher.promptForSaveDestination();
this._saveToDiskTimer = null;
}
},
postShowCallback() {
this.mDialog.sizeToContent();
// Set initial focus
this.dialogElement("mode").focus();
},
initIntro(url, displayName) {
this.dialogElement("location").value = displayName;
this.dialogElement("location").setAttribute("tooltiptext", displayName);
// if mSourcePath is a local file, then let's use the pretty path name
// instead of an ugly url...
let pathString;
if (url instanceof Ci.nsIFileURL) {
try {
// Getting .file might throw, or .parent could be null
pathString = url.file.parent.path;
} catch (ex) {}
}
if (!pathString) {
pathString = BrowserUtils.formatURIForDisplay(url, {
showInsecureHTTP: true,
});
}
// Set the location text, which is separate from the intro text so it can be cropped
var location = this.dialogElement("source");
location.value = pathString;
location.setAttribute("tooltiptext", this.mSourcePath);
// Show the type of file.
var type = this.dialogElement("type");
var mimeInfo = this.mLauncher.MIMEInfo;
// 1. Try to use the pretty description of the type, if one is available.
var typeString = mimeInfo.description;
if (typeString == "") {
// 2. If there is none, use the extension to identify the file, e.g. "ZIP file"
var primaryExtension = "";
try {
primaryExtension = mimeInfo.primaryExtension;
} catch (ex) {}
if (primaryExtension != "") {
typeString = this.dialogElement("strings").getFormattedString(
"fileType",
[primaryExtension.toUpperCase()]
);
}
// 3. If we can't even do that, just give up and show the MIME type.
else {
typeString = mimeInfo.MIMEType;
}
}
// When the length is unknown, contentLength would be -1
if (this.mLauncher.contentLength >= 0) {
let [size, unit] = DownloadUtils.convertByteUnits(
this.mLauncher.contentLength
);
type.value = this.dialogElement("strings").getFormattedString(
"orderedFileSizeWithType",
[typeString, size, unit]
);
} else {
type.value = typeString;
}
},
// Returns true if opening the default application makes sense.
openWithDefaultOK() {
// The checking is different on Windows...
if (AppConstants.platform == "win") {
// Windows presents some special cases.
// We need to prevent use of "system default" when the file is
// executable (so the user doesn't launch nasty programs downloaded
// from the web), and, enable use of "system default" if it isn't
// executable (because we will prompt the user for the default app
// in that case).
// Default is Ok if the file isn't executable (and vice-versa).
return (
!this.mLauncher.targetFileIsExecutable ||
this.isExemptExecutableExtension
);
}
// On other platforms, default is Ok if there is a default app.
// Note that nsIMIMEInfo providers need to ensure that this holds true
// on each platform.
return this.mLauncher.MIMEInfo.hasDefaultHandler;
},
// Set "default" application description field.
initDefaultApp() {
// Use description, if we can get one.
var desc = this.mLauncher.MIMEInfo.defaultDescription;
if (desc) {
var defaultApp = this.dialogElement("strings").getFormattedString(
"defaultApp",
[desc]
);
this.dialogElement("defaultHandler").label = defaultApp;
} else {
this.dialogElement("modeDeck").setAttribute("selectedIndex", "1");
// Hide the default handler item too, in case the user picks a
// custom handler at a later date which triggers the menulist to show.
this.dialogElement("defaultHandler").hidden = true;
}
},
getPath(aFile) {
if (AppConstants.platform == "macosx") {
return aFile.leafName || aFile.path;
}
return aFile.path;
},
initInteractiveControls() {
var modeGroup = this.dialogElement("mode");
// We don't let users open .exe files or random binary data directly
// from the browser at the moment because of security concerns.
var openWithDefaultOK = this.openWithDefaultOK();
var mimeType = this.mLauncher.MIMEInfo.MIMEType;
var openHandler = this.dialogElement("openHandler");
if (
(this.mLauncher.targetFileIsExecutable &&
!this.isExemptExecutableExtension) ||
((mimeType == "application/octet-stream" ||
mimeType == "application/x-msdos-program" ||
mimeType == "application/x-msdownload") &&
!openWithDefaultOK)
) {
this.dialogElement("open").disabled = true;
openHandler.disabled = true;
openHandler.selectedItem = null;
modeGroup.selectedItem = this.dialogElement("save");
return;
}
// Fill in helper app info, if there is any.
try {
this.chosenApp =
this.mLauncher.MIMEInfo.preferredApplicationHandler.QueryInterface(
Ci.nsILocalHandlerApp
);
} catch (e) {
this.chosenApp = null;
}
// Initialize "default application" field.
this.initDefaultApp();
var otherHandler = this.dialogElement("otherHandler");
// Fill application name textbox.
if (
this.chosenApp &&
this.chosenApp.executable &&
this.chosenApp.executable.path
) {
otherHandler.setAttribute(
"path",
this.getPath(this.chosenApp.executable)
);
otherHandler.label = this.getFileDisplayName(this.chosenApp.executable);
otherHandler.hidden = false;
}
openHandler.selectedIndex = 0;
var defaultOpenHandler = this.dialogElement("defaultHandler");
if (this.shouldShowInternalHandlerOption()) {
this.dialogElement("handleInternally").hidden = false;
}
if (
this.mLauncher.MIMEInfo.preferredAction ==
this.nsIMIMEInfo.useSystemDefault
) {
// Open (using system default).
modeGroup.selectedItem = this.dialogElement("open");
} else if (
this.mLauncher.MIMEInfo.preferredAction == this.nsIMIMEInfo.useHelperApp
) {
// Open with given helper app.
modeGroup.selectedItem = this.dialogElement("open");
openHandler.selectedItem =
otherHandler && !otherHandler.hidden
? otherHandler
: defaultOpenHandler;
} else if (
!this.dialogElement("handleInternally").hidden &&
this.mLauncher.MIMEInfo.preferredAction ==
this.nsIMIMEInfo.handleInternally
) {
// Handle internally
modeGroup.selectedItem = this.dialogElement("handleInternally");
} else {
// Save to disk.
modeGroup.selectedItem = this.dialogElement("save");
}
// If we don't have a "default app" then disable that choice.
if (!openWithDefaultOK) {
var isSelected = defaultOpenHandler.selected;
// Disable that choice.
defaultOpenHandler.hidden = true;
// If that's the default, then switch to "save to disk."
if (isSelected) {
openHandler.selectedIndex = 1;
if (this.dialogElement("open").selected) {
modeGroup.selectedItem = this.dialogElement("save");
}
}
}
otherHandler.nextSibling.hidden =
otherHandler.nextSibling.nextSibling.hidden = false;
this.updateOKButton();
},
// Returns the user-selected application
helperAppChoice() {
return this.chosenApp;
},
get saveToDisk() {
return this.dialogElement("save").selected;
},
get useOtherHandler() {
return (
this.dialogElement("open").selected &&
this.dialogElement("openHandler").selectedIndex == 1
);
},
get useSystemDefault() {
return (
this.dialogElement("open").selected &&
this.dialogElement("openHandler").selectedIndex == 0
);
},
get handleInternally() {
return this.dialogElement("handleInternally").selected;
},
toggleRememberChoice(aCheckbox) {
this.dialogElement("settingsChange").hidden = !aCheckbox.checked;
this.mDialog.sizeToContent();
},
openHandlerCommand() {
var openHandler = this.dialogElement("openHandler");
if (openHandler.selectedItem.id == "choose") {
this.chooseApp();
} else {
openHandler.setAttribute(
"lastSelectedItemID",
openHandler.selectedItem.id
);
}
},
updateOKButton() {
var ok = false;
if (this.dialogElement("save").selected) {
// This is always OK.
ok = true;
} else if (this.dialogElement("open").selected) {
switch (this.dialogElement("openHandler").selectedIndex) {
case 0:
// No app need be specified in this case.
ok = true;
break;
case 1:
// only enable the OK button if we have a default app to use or if
// the user chose an app....
ok =
this.chosenApp ||
/\S/.test(this.dialogElement("otherHandler").getAttribute("path"));
break;
}
}
// Enable Ok button if ok to press.
let dialog = this.mDialog.document.getElementById("unknownContentType");
dialog.getButton("accept").disabled = !ok;
},
// Returns true iff the user-specified helper app has been modified.
appChanged() {
return (
this.helperAppChoice() !=
this.mLauncher.MIMEInfo.preferredApplicationHandler
);
},
updateMIMEInfo() {
let { MIMEInfo } = this.mLauncher;
// Don't erase the preferred choice being internal handler
// -- this dialog is often the result of the handler fallback
// (e.g. Content-Disposition was set as attachment) and we don't
// want to inadvertently cause that to always show the dialog if
// users don't want that behaviour.
// Note: this is the same condition as the one in initDialog
// which avoids ticking the checkbox. The user can still change
// the action by ticking the checkbox, or by using the prefs to
// manually select always ask (at which point `areAlwaysOpeningInternally`
// will be false, which means `discardUpdate` will be false, which means
// we'll store the last-selected option even if the filetype's pref is
// set to always ask).
let areAlwaysOpeningInternally =
MIMEInfo.preferredAction == Ci.nsIMIMEInfo.handleInternally &&
!MIMEInfo.alwaysAskBeforeHandling;
let discardUpdate =
areAlwaysOpeningInternally &&
!this.dialogElement("rememberChoice").checked;
var needUpdate = false;
// If current selection differs from what's in the mime info object,
// then we need to update.
if (this.saveToDisk) {
needUpdate =
this.mLauncher.MIMEInfo.preferredAction != this.nsIMIMEInfo.saveToDisk;
if (needUpdate) {
this.mLauncher.MIMEInfo.preferredAction = this.nsIMIMEInfo.saveToDisk;
}
} else if (this.useSystemDefault) {
needUpdate =
this.mLauncher.MIMEInfo.preferredAction !=
this.nsIMIMEInfo.useSystemDefault;
if (needUpdate) {
this.mLauncher.MIMEInfo.preferredAction =
this.nsIMIMEInfo.useSystemDefault;
}
} else if (this.useOtherHandler) {
// For "open with", we need to check both preferred action and whether the user chose
// a new app.
needUpdate =
this.mLauncher.MIMEInfo.preferredAction !=
this.nsIMIMEInfo.useHelperApp || this.appChanged();
if (needUpdate) {
this.mLauncher.MIMEInfo.preferredAction = this.nsIMIMEInfo.useHelperApp;
// App may have changed - Update application
var app = this.helperAppChoice();
this.mLauncher.MIMEInfo.preferredApplicationHandler = app;
}
} else if (this.handleInternally) {
needUpdate =
this.mLauncher.MIMEInfo.preferredAction !=
this.nsIMIMEInfo.handleInternally;
if (needUpdate) {
this.mLauncher.MIMEInfo.preferredAction =
this.nsIMIMEInfo.handleInternally;
}
}
// We will also need to update if the "always ask" flag has changed.
needUpdate =
needUpdate ||
this.mLauncher.MIMEInfo.alwaysAskBeforeHandling !=
!this.dialogElement("rememberChoice").checked;
// One last special case: If the input "always ask" flag was false, then we always
// update. In that case we are displaying the helper app dialog for the first
// time for this mime type and we need to store the user's action in the handler service
// (whether that action has changed or not; if it didn't change, then we need
// to store the "always ask" flag so the helper app dialog will or won't display
// next time, per the user's selection).
needUpdate = needUpdate || !this.mLauncher.MIMEInfo.alwaysAskBeforeHandling;
// Make sure mime info has updated setting for the "always ask" flag.
this.mLauncher.MIMEInfo.alwaysAskBeforeHandling =
!this.dialogElement("rememberChoice").checked;
return needUpdate && !discardUpdate;
},
// See if the user changed things, and if so, store this mime type in the
// handler service.
updateHelperAppPref() {
var handlerInfo = this.mLauncher.MIMEInfo;
var hs = Cc["@mozilla.org/uriloader/handler-service;1"].getService(
Ci.nsIHandlerService
);
hs.store(handlerInfo);
},
onOK(aEvent) {
// Verify typed app path, if necessary.
if (this.useOtherHandler) {
var helperApp = this.helperAppChoice();
if (
!helperApp ||
!helperApp.executable ||
!helperApp.executable.exists()
) {
// Show alert and try again.
var bundle = this.dialogElement("strings");
var msg = bundle.getFormattedString("badApp", [
this.dialogElement("otherHandler").getAttribute("path"),
]);
Services.prompt.alert(
this.mDialog,
bundle.getString("badApp.title"),
msg
);
// Disable the OK button.
let dialog = this.mDialog.document.getElementById("unknownContentType");
dialog.getButton("accept").disabled = true;
this.dialogElement("mode").focus();
// Clear chosen application.
this.chosenApp = null;
// Leave dialog up.
aEvent.preventDefault();
}
}
// Remove our web progress listener (a progress dialog will be
// taking over).
this.mLauncher.setWebProgressListener(null);
// saveToDisk and setDownloadToLaunch can return errors in
// certain circumstances (e.g. The user clicks cancel in the
// "Save to Disk" dialog. In those cases, we don't want to
// update the helper application preferences in the RDF file.
try {
var needUpdate = this.updateMIMEInfo();
if (this.dialogElement("save").selected) {
// see @notify
this._saveToDiskTimer =
Cc["@mozilla.org/timer;1"].createInstance(nsITimer);
this._saveToDiskTimer.initWithCallback(this, 0, nsITimer.TYPE_ONE_SHOT);
} else {
let uri = this.mLauncher.source;
// Launch local files immediately without downloading them:
if (uri instanceof Ci.nsIFileURL) {
this.mLauncher.launchLocalFile();
} else {
this.mLauncher.setDownloadToLaunch(this.handleInternally, null);
}
}
// Update user pref for this mime type (if necessary). We do not
// store anything in the mime type preferences for the ambiguous
// type application/octet-stream. We do NOT do this for
// application/x-msdownload since we want users to be able to
// autodownload these to disk.
if (
needUpdate &&
this.mLauncher.MIMEInfo.MIMEType != "application/octet-stream"
) {
this.updateHelperAppPref();
}
} catch (e) {
console.error(e);
}
this.onUnload();
},
onCancel() {
// Remove our web progress listener.
this.mLauncher.setWebProgressListener(null);
// Cancel app launcher.
try {
this.mLauncher.cancel(Cr.NS_BINDING_ABORTED);
} catch (e) {
console.error(e);
}
this.onUnload();
},
onUnload() {
this.mDialog.document.removeEventListener("dialogaccept", this);
this.mDialog.document.removeEventListener("dialogcancel", this);
// Unhook dialog from this object.
this.mDialog.dialog = null;
},
handleEvent(aEvent) {
switch (aEvent.type) {
case "dialogaccept":
this.onOK(aEvent);
break;
case "dialogcancel":
this.onCancel();
break;
}
},
dialogElement(id) {
return this.mDialog.document.getElementById(id);
},
// Retrieve the pretty description from the file
getFileDisplayName: function getFileDisplayName(file) {
if (AppConstants.platform == "win") {
if (file instanceof Ci.nsILocalFileWin) {
try {
return file.getVersionInfoField("FileDescription");
} catch (e) {}
}
} else if (AppConstants.platform == "macosx") {
if (file instanceof Ci.nsILocalFileMac) {
try {
return file.bundleDisplayName;
} catch (e) {}
}
}
return file.leafName;
},
finishChooseApp() {
if (this.chosenApp) {
// Show the "handler" menulist since we have a (user-specified)
// application now.
this.dialogElement("modeDeck").setAttribute("selectedIndex", "0");
// Update dialog.
var otherHandler = this.dialogElement("otherHandler");
otherHandler.removeAttribute("hidden");
otherHandler.setAttribute(
"path",
this.getPath(this.chosenApp.executable)
);
if (AppConstants.platform == "win") {
otherHandler.label = this.getFileDisplayName(this.chosenApp.executable);
} else {
otherHandler.label = this.chosenApp.name;
}
this.dialogElement("openHandler").selectedIndex = 1;
this.dialogElement("openHandler").setAttribute(
"lastSelectedItemID",
"otherHandler"
);
this.dialogElement("mode").selectedItem = this.dialogElement("open");
} else {
var openHandler = this.dialogElement("openHandler");
var lastSelectedID = openHandler.getAttribute("lastSelectedItemID");
if (!lastSelectedID) {
lastSelectedID = "defaultHandler";
}
openHandler.selectedItem = this.dialogElement(lastSelectedID);
}
},
// chooseApp: Open file picker and prompt user for application.
chooseApp() {
if (AppConstants.platform == "win") {
// Protect against the lack of an extension
var fileExtension = "";
try {
fileExtension = this.mLauncher.MIMEInfo.primaryExtension;
} catch (ex) {}
// Try to use the pretty description of the type, if one is available.
var typeString = this.mLauncher.MIMEInfo.description;
if (!typeString) {
// If there is none, use the extension to
// identify the file, e.g. "ZIP file"
if (fileExtension) {
typeString = this.dialogElement("strings").getFormattedString(
"fileType",
[fileExtension.toUpperCase()]
);
} else {
// If we can't even do that, just give up and show the MIME type.
typeString = this.mLauncher.MIMEInfo.MIMEType;
}
}
var params = {};
params.title = this.dialogElement("strings").getString(
"chooseAppFilePickerTitle"
);
params.description = typeString;
params.filename = this.mLauncher.suggestedFileName;
params.mimeInfo = this.mLauncher.MIMEInfo;
params.handlerApp = null;
this.mDialog.openDialog(
null,
"chrome,modal,centerscreen,titlebar,dialog=yes",
params
);
if (
params.handlerApp &&
params.handlerApp.executable &&
params.handlerApp.executable.isFile()
) {
// Remember the file they chose to run.
this.chosenApp = params.handlerApp;
}
} else if ("@mozilla.org/applicationchooser;1" in Cc) {
var nsIApplicationChooser = Ci.nsIApplicationChooser;
var appChooser = Cc["@mozilla.org/applicationchooser;1"].createInstance(
nsIApplicationChooser
);
appChooser.init(
this.mDialog,
this.dialogElement("strings").getString("chooseAppFilePickerTitle")
);
var contentTypeDialogObj = this;
let appChooserCallback = function appChooserCallback_done(aResult) {
if (aResult) {
contentTypeDialogObj.chosenApp = aResult.QueryInterface(
Ci.nsILocalHandlerApp
);
}
contentTypeDialogObj.finishChooseApp();
};
appChooser.open(this.mLauncher.MIMEInfo.MIMEType, appChooserCallback);
// The finishChooseApp is called from appChooserCallback
return;
} else {
var nsIFilePicker = Ci.nsIFilePicker;
var fp = Cc["@mozilla.org/filepicker;1"].createInstance(nsIFilePicker);
fp.init(
this.mDialog.browsingContext,
this.dialogElement("strings").getString("chooseAppFilePickerTitle"),
nsIFilePicker.modeOpen
);
fp.appendFilters(nsIFilePicker.filterApps);
fp.open(aResult => {
if (aResult == nsIFilePicker.returnOK && fp.file) {
// Remember the file they chose to run.
var localHandlerApp = Cc[
"@mozilla.org/uriloader/local-handler-app;1"
].createInstance(Ci.nsILocalHandlerApp);
localHandlerApp.executable = fp.file;
this.chosenApp = localHandlerApp;
}
this.finishChooseApp();
});
// The finishChooseApp is called from fp.open() callback
return;
}
this.finishChooseApp();
},
shouldShowInternalHandlerOption() {
let browsingContext = this.mDialog.BrowsingContext.get(
this.mLauncher.browsingContextId
);
let primaryExtension = "";
try {
// The primaryExtension getter may throw if there are no
// known extensions for this mimetype.
primaryExtension = this.mLauncher.MIMEInfo.primaryExtension;
} catch (e) {}
// Only available for PDF files when pdf.js is enabled.
// Skip if the current window uses the resource scheme, to avoid
// showing the option when using the Download button in pdf.js.
if (primaryExtension == "pdf") {
return (
!(
this.mLauncher.source.schemeIs("blob") ||
this.mLauncher.source.equalsExceptRef(
browsingContext.currentWindowGlobal.documentURI
)
) &&
!Services.prefs.getBoolPref("pdfjs.disabled", true) &&
Services.prefs.getBoolPref(
"browser.helperApps.showOpenOptionForPdfJS",
false
)
);
}
return (
Services.prefs.getBoolPref(
"browser.helperApps.showOpenOptionForViewableInternally",
false
) &&
lazy.DownloadIntegration.shouldViewDownloadInternally(
this.mLauncher.MIMEInfo.MIMEType,
primaryExtension
)
);
},
// Turn this on to get debugging messages.
debug: false,
// Dump text (if debug is on).
dump(text) {
if (this.debug) {
dump(text);
}
},
};