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nsFilePicker.js
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2001-11-20
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* 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 Netscape are
* Copyright (C) 2000 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s): Stuart Parmenter <pavlov@netscape.com>
*/
/*
* No magic constructor behaviour, as is de rigeur for XPCOM.
* If you must perform some initialization, and it could possibly fail (even
* due to an out-of-memory condition), you should use an Init method, which
* can convey failure appropriately (thrown exception in JS,
* NS_FAILED(nsresult) return in C++).
*
* In JS, you can actually cheat, because a thrown exception will cause the
* CreateInstance call to fail in turn, but not all languages are so lucky.
* (Though ANSI C++ provides exceptions, they are verboten in Mozilla code
* for portability reasons -- and even when you're building completely
* platform-specific code, you can't throw across an XPCOM method boundary.)
*/
const DEBUG = false; /* set to true to enable debug messages */
const FILEPICKER_CONTRACTID = "@mozilla.org/filepicker;1";
const FILEPICKER_CID = Components.ID("{54ae32f8-1dd2-11b2-a209-df7c505370f8}");
const LOCAL_FILE_CONTRACTID = "@mozilla.org/file/local;1";
const APPSHELL_SERV_CONTRACTID = "@mozilla.org/appshell/appShellService;1";
const STRBUNDLE_SERV_CONTRACTID = "@mozilla.org/intl/stringbundle;1";
const nsIAppShellService = Components.interfaces.nsIAppShellService;
const nsILocalFile = Components.interfaces.nsILocalFile;
const nsIFileURL = Components.interfaces.nsIFileURL;
const nsISupports = Components.interfaces.nsISupports;
const nsIFactory = Components.interfaces.nsIFactory;
const nsIFilePicker = Components.interfaces.nsIFilePicker;
const nsIInterfaceRequestor = Components.interfaces.nsIInterfaceRequestor
const nsIDOMWindow = Components.interfaces.nsIDOMWindow;
const nsIStringBundleService = Components.interfaces.nsIStringBundleService;
var bundle = null;
var lastDirectory = null;
function nsFilePicker()
{
if (!bundle)
bundle = srGetStrBundle("chrome://global/locale/filepicker.properties");
/* attributes */
this.mDefaultString = "";
if (lastDirectory) {
this.mDisplayDirectory = Components.classes[LOCAL_FILE_CONTRACTID].createInstance(nsILocalFile);
this.mDisplayDirectory.initWithUnicodePath(lastDirectory);
} else {
this.mDisplayDirectory = null;
}
this.mFilterTitles = new Array();
this.mFilters = new Array();
}
nsFilePicker.prototype = {
/* attribute nsILocalFile displayDirectory; */
set displayDirectory(a) { this.mDisplayDirectory = a; },
get displayDirectory() { return this.mDisplayDirectory; },
/* readonly attribute nsILocalFile file; */
set file(a) { throw "readonly property"; },
get file() { return this.mFile; },
/* readonly attribute nsIFileURL fileURL; */
set fileURL(a) { throw "readonly property"; },
get fileURL() {
if (this.mFile) {
var ioService = Components.classes["@mozilla.org/network/io-service;1"]
.getService(Components.interfaces.nsIIOService);
var url = ioService.newFileURI(this.mFile);
return url;
}
return null;
},
/* attribute wstring defaultString; */
set defaultString(a) { this.mDefaultString = a; },
get defaultString() { return this.mDefaultString; },
/* methods */
init: function(parent, title, mode) {
this.mParentWindow = parent;
this.mTitle = title;
this.mMode = mode;
},
appendFilters: function(filterMask) {
if (filterMask & nsIFilePicker.filterHTML) {
this.appendFilter(bundle.GetStringFromName("htmlTitle"),
bundle.GetStringFromName("htmlFilter"));
}
if (filterMask & nsIFilePicker.filterText) {
this.appendFilter(bundle.GetStringFromName("textTitle"),
bundle.GetStringFromName("textFilter"));
}
if (filterMask & nsIFilePicker.filterImages) {
this.appendFilter(bundle.GetStringFromName("imageTitle"),
bundle.GetStringFromName("imageFilter"));
}
if (filterMask & nsIFilePicker.filterXML) {
this.appendFilter(bundle.GetStringFromName("xmlTitle"),
bundle.GetStringFromName("xmlFilter"));
}
if (filterMask & nsIFilePicker.filterXUL) {
this.appendFilter(bundle.GetStringFromName("xulTitle"),
bundle.GetStringFromName("xulFilter"));
}
if (filterMask & nsIFilePicker.filterAll) {
this.appendFilter(bundle.GetStringFromName("allTitle"),
bundle.GetStringFromName("allFilter"));
}
},
appendFilter: function(title, extentions) {
this.mFilterTitles.push(title);
this.mFilters.push(extentions);
},
QueryInterface: function(iid) {
if (!iid.equals(nsIFilePicker) &&
!iid.equals(nsISupports))
throw Components.results.NS_ERROR_NO_INTERFACE;
return this;
},
show: function() {
var o = new Object();
o.title = this.mTitle;
o.mode = this.mMode;
o.displayDirectory = this.mDisplayDirectory;
o.defaultString = this.mDefaultString;
o.filters = new Object();
o.filters.titles = this.mFilterTitles;
o.filters.types = this.mFilters;
o.retvals = new Object();
var parent;
try {
if (this.mParentWindow) {
parent = this.mParentWindow;
} else if (typeof(window) == "object" && window != null) {
parent = window;
} else {
try {
var appShellService = Components.classes[APPSHELL_SERV_CONTRACTID].getService(nsIAppShellService);
parent = appShellService.hiddenDOMWindow;
} catch(ex) {
debug("Can't get parent. xpconnect hates me so we can't get one from the appShellService.\n");
debug(ex + "\n");
}
}
} catch(ex) { debug("fuck\n"); }
try {
parent.openDialog("chrome://global/content/filepicker.xul",
"",
"chrome,modal,titlebar,resizable=yes,dependent=yes",
o);
this.mFile = o.retvals.file;
lastDirectory = o.retvals.directory;
return o.retvals.buttonStatus;
} catch(ex) { dump("unable to open file picker\n" + ex + "\n"); }
return null;
}
}
if (DEBUG)
debug = function (s) { dump("-*- filepicker: " + s + "\n"); }
else
debug = function (s) {}
/* module foo */
var filePickerModule = new Object();
filePickerModule.registerSelf =
function (compMgr, fileSpec, location, type)
{
debug("registering (all right -- a JavaScript module!)");
compMgr.registerComponentWithType(FILEPICKER_CID, "FilePicker JS Component",
FILEPICKER_CONTRACTID, fileSpec, location,
true, true, type);
}
filePickerModule.getClassObject =
function (compMgr, cid, iid) {
if (!cid.equals(FILEPICKER_CID))
throw Components.results.NS_ERROR_NO_INTERFACE;
if (!iid.equals(Components.interfaces.nsIFactory))
throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
return filePickerFactory;
}
filePickerModule.canUnload =
function(compMgr)
{
debug("Unloading component.");
return true;
}
/* factory object */
var filePickerFactory = new Object();
filePickerFactory.createInstance =
function (outer, iid) {
debug("CI: " + iid);
debug("IID:" + nsIFilePicker);
if (outer != null)
throw Components.results.NS_ERROR_NO_AGGREGATION;
return (new nsFilePicker()).QueryInterface(iid);
}
/* entrypoint */
function NSGetModule(compMgr, fileSpec) {
return filePickerModule;
}
/* crap from strres.js that I want to use for string bundles since I can't include another .js file.... */
var strBundleService = null;
function srGetStrBundle(path)
{
var strBundle = null;
if (!strBundleService) {
try {
strBundleService = Components.classes[STRBUNDLE_SERV_CONTRACTID].getService(nsIStringBundleService);
} catch (ex) {
dump("\n--** strBundleService createInstance failed **--\n");
return null;
}
}
strBundle = strBundleService.createBundle(path);
if (!strBundle) {
dump("\n--** strBundle createInstance failed **--\n");
}
return strBundle;
}