The Tor Browser: toolkit/components/filepicker/nsFilePicker.js@6474c204b198 (annotated)

toolkit/components/filepicker/nsFilePicker.js@6474c204b198 (annotated)

toolkit/components/filepicker/nsFilePicker.js

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* -*- 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; */
   get file()  { return this.mFilesEnumerator.mFiles[0]; },
   /* readonly attribute nsISimpleEnumerator files; */
   get files()  { return this.mFilesEnumerator; },
   /* readonly attribute nsIDOMFile domfile; */
   get domfile()  {
     let enumerator = this.domfiles;
     return enumerator ? enumerator.mFiles[0] : null;
   },
   /* readonly attribute nsISimpleEnumerator domfiles; */
   get domfiles()  {
     if (!this.mFilesEnumerator) {
       return null;
     }
     if (!this.mDOMFilesEnumerator) {
       this.mDOMFilesEnumerator = {
         QueryInterface: XPCOMUtils.generateQI([Components.interfaces.nsISimpleEnumerator]),
         mFiles: [],
         mIndex: 0,
         hasMoreElements: function() {
           return (this.mIndex < this.mFiles.length);
         },
         getNext: function() {
           if (this.mIndex >= this.mFiles.length) {
             throw Components.results.NS_ERROR_FAILURE;
           }
           return this.mFiles[this.mIndex++];
         }
       };
       var utils = this.mParentWindow.QueryInterface(Components.interfaces.nsIInterfaceRequestor)
                                     .getInterface(Components.interfaces.nsIDOMWindowUtils);
       for (var i = 0; i < this.mFilesEnumerator.mFiles.length; ++i) {
         var file = utils.wrapDOMFile(this.mFilesEnumerator.mFiles[i]);
         this.mDOMFilesEnumerator.mFiles.push(file);
       }
     }
     return this.mDOMFilesEnumerator;
   },
   /* readonly attribute nsIURI fileURL; */
   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; },
   /* readonly attribute short mode; */
   get mode() { return this.mMode; },
   /* members */
   mFilesEnumerator: undefined,
   mDOMFilesEnumerator: 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);
   },
   open: function(aFilePickerShownCallback) {
     var tm = Components.classes["@mozilla.org/thread-manager;1"]
                        .getService(Components.interfaces.nsIThreadManager);
     tm.mainThread.dispatch(function() {
       let result = Components.interfaces.nsIFilePicker.returnCancel;
       try {
         result = this.show();
       } catch(ex) {
       }
       if (aFilePickerShownCallback) {
         aFilePickerShownCallback.done(result);
       }
     }.bind(this), Components.interfaces.nsIThread.DISPATCH_NORMAL);
   },
   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) {};
 this.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;
 }