gecko/mobile/android/components/HelperAppDialog.js

104 lines
3.8 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/. */
const Cc = Components.classes;
const Ci = Components.interfaces;
const Cu = Components.utils;
const Cr = Components.results;
const PREF_BD_USEDOWNLOADDIR = "browser.download.useDownloadDir";
const URI_GENERIC_ICON_DOWNLOAD = "drawable://alert_download";
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/Services.jsm");
// -----------------------------------------------------------------------
// HelperApp Launcher Dialog
// -----------------------------------------------------------------------
function HelperAppLauncherDialog() { }
HelperAppLauncherDialog.prototype = {
classID: Components.ID("{e9d277a0-268a-4ec2-bb8c-10fdf3e44611}"),
QueryInterface: XPCOMUtils.generateQI([Ci.nsIHelperAppLauncherDialog]),
show: function hald_show(aLauncher, aContext, aReason) {
// Save everything by default
aLauncher.MIMEInfo.preferredAction = Ci.nsIMIMEInfo.useSystemDefault;
aLauncher.saveToDisk(null, false);
},
promptForSaveToFile: function hald_promptForSaveToFile(aLauncher, aContext, aDefaultFile, aSuggestedFileExt, aForcePrompt) {
// Retrieve the user's default download directory
let dnldMgr = Cc["@mozilla.org/download-manager;1"].getService(Ci.nsIDownloadManager);
let defaultFolder = dnldMgr.userDownloadsDirectory;
try {
file = this.validateLeafName(defaultFolder, aDefaultFile, aSuggestedFileExt);
} catch (e) { }
return file;
},
validateLeafName: function hald_validateLeafName(aLocalFile, aLeafName, aFileExt) {
if (!(aLocalFile && this.isUsableDirectory(aLocalFile)))
return null;
// Remove any leading periods, since we don't want to save hidden files
// automatically.
aLeafName = aLeafName.replace(/^\.+/, "");
if (aLeafName == "")
aLeafName = "unnamed" + (aFileExt ? "." + aFileExt : "");
aLocalFile.append(aLeafName);
this.makeFileUnique(aLocalFile);
return aLocalFile;
},
makeFileUnique: function hald_makeFileUnique(aLocalFile) {
try {
// Note - this code is identical to that in
// toolkit/content/contentAreaUtils.js.
// If you are updating this code, update that code too! We can't share code
// here since this is called in a js component.
var collisionCount = 0;
while (aLocalFile.exists()) {
collisionCount++;
if (collisionCount == 1) {
// Append "(2)" before the last dot in (or at the end of) the filename
// special case .ext.gz etc files so we don't wind up with .tar(2).gz
if (aLocalFile.leafName.match(/\.[^\.]{1,3}\.(gz|bz2|Z)$/i))
aLocalFile.leafName = aLocalFile.leafName.replace(/\.[^\.]{1,3}\.(gz|bz2|Z)$/i, "(2)$&");
else
aLocalFile.leafName = aLocalFile.leafName.replace(/(\.[^\.]*)?$/, "(2)$&");
}
else {
// replace the last (n) in the filename with (n+1)
aLocalFile.leafName = aLocalFile.leafName.replace(/^(.*\()\d+\)/, "$1" + (collisionCount+1) + ")");
}
}
aLocalFile.create(Ci.nsIFile.NORMAL_FILE_TYPE, 0600);
}
catch (e) {
dump("*** exception in validateLeafName: " + e + "\n");
if (e.result == Cr.NS_ERROR_FILE_ACCESS_DENIED)
throw e;
if (aLocalFile.leafName == "" || aLocalFile.isDirectory()) {
aLocalFile.append("unnamed");
if (aLocalFile.exists())
aLocalFile.createUnique(Ci.nsIFile.NORMAL_FILE_TYPE, 0600);
}
}
},
isUsableDirectory: function hald_isUsableDirectory(aDirectory) {
return aDirectory.exists() && aDirectory.isDirectory() && aDirectory.isWritable();
},
};
this.NSGetFactory = XPCOMUtils.generateNSGetFactory([HelperAppLauncherDialog]);