gecko/toolkit/components/filepicker/nsFilePicker.js
2012-05-21 12:12:37 +01:00

273 lines
9.4 KiB
JavaScript

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
/*
* 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.)
*/
Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
const DEBUG = false; /* set to true to enable debug messages */
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;
const nsIWebNavigation = Components.interfaces.nsIWebNavigation;
const nsIDocShellTreeItem = Components.interfaces.nsIDocShellTreeItem;
const nsIBaseWindow = Components.interfaces.nsIBaseWindow;
var titleBundle = null;
var filterBundle = null;
var lastDirectory = null;
function nsFilePicker()
{
if (!titleBundle)
titleBundle = srGetStrBundle("chrome://global/locale/filepicker.properties");
if (!filterBundle)
filterBundle = srGetStrBundle("chrome://global/content/filepicker.properties");
/* attributes */
this.mDefaultString = "";
this.mFilterIndex = 0;
this.mFilterTitles = new Array();
this.mFilters = new Array();
this.mDisplayDirectory = null;
if (lastDirectory) {
try {
var dir = Components.classes[LOCAL_FILE_CONTRACTID].createInstance(nsILocalFile);
dir.initWithPath(lastDirectory);
this.mDisplayDirectory = dir;
} catch (e) {}
}
}
nsFilePicker.prototype = {
classID: Components.ID("{54ae32f8-1dd2-11b2-a209-df7c505370f8}"),
QueryInterface: function(iid) {
if (iid.equals(nsIFilePicker) ||
iid.equals(nsISupports))
return this;
throw Components.results.NS_ERROR_NO_INTERFACE;
},
/* attribute nsILocalFile displayDirectory; */
set displayDirectory(a) {
this.mDisplayDirectory = a &&
a.clone().QueryInterface(nsILocalFile);
},
get displayDirectory() {
return this.mDisplayDirectory &&
this.mDisplayDirectory.clone()
.QueryInterface(nsILocalFile);
},
/* readonly attribute nsILocalFile file; */
set file(a) { throw "readonly property"; },
get file() { return this.mFilesEnumerator.mFiles[0]; },
/* readonly attribute nsISimpleEnumerator files; */
set files(a) { throw "readonly property"; },
get files() { return this.mFilesEnumerator; },
/* readonly attribute nsIURI fileURL; */
set fileURL(a) { throw "readonly property"; },
get fileURL() {
if (this.mFileURL)
return this.mFileURL;
if (!this.mFilesEnumerator)
return null;
var ioService = Components.classes["@mozilla.org/network/io-service;1"]
.getService(Components.interfaces.nsIIOService);
return this.mFileURL = ioService.newFileURI(this.file);
},
/* attribute wstring defaultString; */
set defaultString(a) { this.mDefaultString = a; },
get defaultString() { return this.mDefaultString; },
/* attribute wstring defaultExtension */
set defaultExtension(ext) { },
get defaultExtension() { return ""; },
/* attribute long filterIndex; */
set filterIndex(a) { this.mFilterIndex = a; },
get filterIndex() { return this.mFilterIndex; },
/* attribute boolean addToRecentDocs; */
set addToRecentDocs(a) {},
get addToRecentDocs() { return false; },
/* members */
mFilesEnumerator: undefined,
mParentWindow: null,
/* methods */
init: function(parent, title, mode) {
this.mParentWindow = parent;
this.mTitle = title;
this.mMode = mode;
},
appendFilters: function(filterMask) {
if (filterMask & nsIFilePicker.filterHTML) {
this.appendFilter(titleBundle.GetStringFromName("htmlTitle"),
filterBundle.GetStringFromName("htmlFilter"));
}
if (filterMask & nsIFilePicker.filterText) {
this.appendFilter(titleBundle.GetStringFromName("textTitle"),
filterBundle.GetStringFromName("textFilter"));
}
if (filterMask & nsIFilePicker.filterImages) {
this.appendFilter(titleBundle.GetStringFromName("imageTitle"),
filterBundle.GetStringFromName("imageFilter"));
}
if (filterMask & nsIFilePicker.filterXML) {
this.appendFilter(titleBundle.GetStringFromName("xmlTitle"),
filterBundle.GetStringFromName("xmlFilter"));
}
if (filterMask & nsIFilePicker.filterXUL) {
this.appendFilter(titleBundle.GetStringFromName("xulTitle"),
filterBundle.GetStringFromName("xulFilter"));
}
this.mAllowURLs = !!(filterMask & nsIFilePicker.filterAllowURLs);
if (filterMask & nsIFilePicker.filterApps) {
// We use "..apps" as a special filter for executable files
this.appendFilter(titleBundle.GetStringFromName("appsTitle"),
"..apps");
}
if (filterMask & nsIFilePicker.filterAudio) {
this.appendFilter(titleBundle.GetStringFromName("audioTitle"),
filterBundle.GetStringFromName("audioFilter"));
}
if (filterMask & nsIFilePicker.filterVideo) {
this.appendFilter(titleBundle.GetStringFromName("videoTitle"),
filterBundle.GetStringFromName("videoFilter"));
}
if (filterMask & nsIFilePicker.filterAll) {
this.appendFilter(titleBundle.GetStringFromName("allTitle"),
filterBundle.GetStringFromName("allFilter"));
}
},
appendFilter: function(title, extensions) {
this.mFilterTitles.push(title);
this.mFilters.push(extensions);
},
show: function() {
var o = new Object();
o.title = this.mTitle;
o.mode = this.mMode;
o.displayDirectory = this.mDisplayDirectory;
o.defaultString = this.mDefaultString;
o.filterIndex = this.mFilterIndex;
o.filters = new Object();
o.filters.titles = this.mFilterTitles;
o.filters.types = this.mFilters;
o.allowURLs = this.mAllowURLs;
o.retvals = new Object();
var parent;
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");
}
}
var parentWin = null;
try {
parentWin = parent.QueryInterface(nsIInterfaceRequestor)
.getInterface(nsIWebNavigation)
.QueryInterface(nsIDocShellTreeItem)
.treeOwner
.QueryInterface(nsIInterfaceRequestor)
.getInterface(nsIBaseWindow);
} catch(ex) {
dump("file picker couldn't get base window\n"+ex+"\n");
}
try {
parent.openDialog("chrome://global/content/filepicker.xul",
"",
"chrome,modal,titlebar,resizable=yes,dependent=yes",
o);
this.mFilterIndex = o.retvals.filterIndex;
this.mFilesEnumerator = o.retvals.files;
this.mFileURL = o.retvals.fileURL;
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) {};
var NSGetFactory = XPCOMUtils.generateNSGetFactory([nsFilePicker]);
/* 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;
}