RetroZilla/extensions/inspector/resources/content/jsutil/system/FilePickerUtils.js
2015-10-20 23:03:22 -04:00

124 lines
4.1 KiB
JavaScript

/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 2001
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Joe Hewitt <hewitt@netscape.com> (original author)
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/***************************************************************
* FilePickerUtils -------------------------------------------------
* A utility for easily dealing with the file picker dialog.
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
* REQUIRED IMPORTS:
****************************************************************/
//////////// global constants ////////////////////
const kFilePickerCID = "@mozilla.org/filepicker;1";
const kLFileCID = "@mozilla.org/file/local;1";
const nsIFilePicker = Components.interfaces.nsIFilePicker;
////////////////////////////////////////////////////////////////////////////
//// class FilePickerUtils
var FilePickerUtils =
{
pickFile: function(aTitle, aInitPath, aFilters, aMode)
{
try {
var modeStr = aMode ? "mode" + aMode : "modeOpen";
var mode;
try {
mode = nsIFilePicker[modeStr];
} catch (ex) {
dump("WARNING: Invalid FilePicker mode '"+aMode+"'. Defaulting to 'Open'.\n");
mode = nsIFilePicker.modeOpen;
}
var fp = XPCU.createInstance(kFilePickerCID, "nsIFilePicker");
fp.init(window, aTitle, mode);
// join array of filter names into bit string
var filters = this.prepareFilters(aFilters);
if (aInitPath) {
var dir = XPCU.createInstance(kLFileCID, "nsILocalFile");
dir.initWithPath(aInitPath);
fp.displayDirectory = dir;
}
if (fp.show() == nsIFilePicker.returnOK) {
return fp.file;
}
} catch (ex) {
dump("ERROR: Unable to open file picker.\n" + ex + "\n");
}
return null;
},
pickDir: function(aTitle, aInitPath)
{
try {
var fp = XPCU.createInstance(kFilePickerCID, "nsIFilePicker");
fp.init(window, aTitle, nsIFilePicker.modeGetFolder);
if (aInitPath) {
var dir = XPCU.createInstance(kLFileCID, "nsILocalFile");
dir.initWithPath(aInitPath);
fp.displayDirectory = dir;
}
if (fp.show() == nsIFilePicker.returnOK) {
return fp.file;
}
} catch (ex) {
dump("ERROR: Unable to open directory picker.\n" + ex + "\n");
}
return null;
},
prepareFilters: function(aFilters)
{
// join array of filter names into bit string
var filters = 0;
for (var i = 0; i < aFilters.length; ++i)
filters = filters | nsIFilePicker[aFilters[i]];
return filters;
}
};