michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: const Ci = Components.interfaces;
michael@0: const Cu = Components.utils;
michael@0: const Cc = Components.classes;
michael@0: 
michael@0: Cu.import("resource://gre/modules/XPCOMUtils.jsm");
michael@0: Cu.import("resource://gre/modules/Services.jsm");
michael@0: Cu.import("resource://gre/modules/FileUtils.jsm");
michael@0: 
michael@0: function FilePicker() {
michael@0: }
michael@0: 
michael@0: FilePicker.prototype = {
michael@0:   _mimeTypeFilter: 0,
michael@0:   _extensionsFilter: "",
michael@0:   _defaultString: "",
michael@0:   _domWin: null,
michael@0:   _defaultExtension: null,
michael@0:   _displayDirectory: null,
michael@0:   _filePath: null,
michael@0:   _promptActive: false,
michael@0:   _filterIndex: 0,
michael@0:   _addToRecentDocs: false,
michael@0: 
michael@0:   init: function(aParent, aTitle, aMode) {
michael@0:     this._domWin = aParent;
michael@0:     this._mode = aMode;
michael@0:     Services.obs.addObserver(this, "FilePicker:Result", false);
michael@0: 
michael@0:     let idService = Cc["@mozilla.org/uuid-generator;1"].getService(Ci.nsIUUIDGenerator); 
michael@0:     this.guid = idService.generateUUID().toString();
michael@0: 
michael@0:     if (aMode != Ci.nsIFilePicker.modeOpen && aMode != Ci.nsIFilePicker.modeOpenMultiple)
michael@0:       throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
michael@0:   },
michael@0: 
michael@0:   appendFilters: function(aFilterMask) {
michael@0:     if (aFilterMask & Ci.nsIFilePicker.filterAudio) {
michael@0:       this._mimeTypeFilter = "audio/*";
michael@0:       return;
michael@0:     }
michael@0: 
michael@0:     if (aFilterMask & Ci.nsIFilePicker.filterImages) {
michael@0:       this._mimeTypeFilter = "image/*";
michael@0:       return;
michael@0:     }
michael@0: 
michael@0:     if (aFilterMask & Ci.nsIFilePicker.filterVideo) {
michael@0:       this._mimeTypeFilter = "video/*";
michael@0:       return;
michael@0:     }
michael@0: 
michael@0:     if (aFilterMask & Ci.nsIFilePicker.filterAll) {
michael@0:       this._mimeTypeFilter = "*/*";
michael@0:       return;
michael@0:     }
michael@0: 
michael@0:     /* From BaseFilePicker.cpp */
michael@0:     if (aFilterMask & Ci.nsIFilePicker.filterHTML) {
michael@0:       this.appendFilter("*.html; *.htm; *.shtml; *.xhtml");
michael@0:     }
michael@0:     if (aFilterMask & Ci.nsIFilePicker.filterText) {
michael@0:       this.appendFilter("*.txt; *.text");
michael@0:     }
michael@0: 
michael@0:     if (aFilterMask & Ci.nsIFilePicker.filterXML) {
michael@0:       this.appendFilter("*.xml");
michael@0:     }
michael@0: 
michael@0:     if (aFilterMask & Ci.nsIFilePicker.xulFilter) {
michael@0:       this.appendFilter("*.xul");
michael@0:     }
michael@0: 
michael@0:     if (aFilterMask & Ci.nsIFilePicker.xulFilter) {
michael@0:       this.appendFilter("..apps");
michael@0:     }
michael@0:   },
michael@0: 
michael@0:   appendFilter: function(title, filter) {
michael@0:     if (this._extensionsFilter)
michael@0:         this._extensionsFilter += ", ";
michael@0:     this._extensionsFilter += filter;
michael@0:   },
michael@0: 
michael@0:   get defaultString() {
michael@0:     return this._defaultString;
michael@0:   },
michael@0: 
michael@0:   set defaultString(defaultString) {
michael@0:     this._defaultString = defaultString;
michael@0:   },
michael@0: 
michael@0:   get defaultExtension() {
michael@0:     return this._defaultExtension;
michael@0:   },
michael@0: 
michael@0:   set defaultExtension(defaultExtension) {
michael@0:     this._defaultExtension = defaultExtension;
michael@0:   },
michael@0: 
michael@0:   get filterIndex() {
michael@0:     return this._filterIndex;
michael@0:   },
michael@0: 
michael@0:   set filterIndex(val) {
michael@0:     this._filterIndex = val;
michael@0:   },
michael@0:   
michael@0:   get displayDirectory() {
michael@0:     return this._displayDirectory;
michael@0:   },
michael@0: 
michael@0:   set displayDirectory(dir) {
michael@0:     this._displayDirectory = dir;
michael@0:   },
michael@0: 
michael@0:   get file() {
michael@0:     if (!this._filePath) {
michael@0:         return null;
michael@0:     }
michael@0: 
michael@0:     return new FileUtils.File(this._filePath);
michael@0:   },
michael@0: 
michael@0:   get fileURL() {
michael@0:     let file = this.getFile();
michael@0:     return Services.io.newFileURI(file);
michael@0:   },
michael@0: 
michael@0:   get files() {
michael@0:     return this.getEnumerator([this.file], function(file) {
michael@0:       return file;
michael@0:     });
michael@0:   },
michael@0: 
michael@0:   get domfile() {
michael@0:     let f = this.file;
michael@0:     if (!f) {
michael@0:         return null;
michael@0:     }
michael@0:     return File(f);
michael@0:   },
michael@0: 
michael@0:   get domfiles() {
michael@0:     return this.getEnumerator([this.file], function(file) {
michael@0:       return File(file);
michael@0:     });
michael@0:   },
michael@0: 
michael@0:   get addToRecentDocs() {
michael@0:     return this._addToRecentDocs;
michael@0:   },
michael@0: 
michael@0:   set addToRecentDocs(val) {
michael@0:     this._addToRecentDocs = val;
michael@0:   },
michael@0: 
michael@0:   get mode() {
michael@0:     return this._mode;
michael@0:   },
michael@0: 
michael@0:   show: function() {
michael@0:     if (this._domWin) {
michael@0:       this.fireDialogEvent(this._domWin, "DOMWillOpenModalDialog");
michael@0:       let winUtils = this._domWin.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowUtils);
michael@0:       winUtils.enterModalState();
michael@0:     }
michael@0: 
michael@0:     this._promptActive = true;
michael@0:     this._sendMessage();
michael@0: 
michael@0:     let thread = Services.tm.currentThread;
michael@0:     while (this._promptActive)
michael@0:       thread.processNextEvent(true);
michael@0:     delete this._promptActive;
michael@0: 
michael@0:     if (this._domWin) {
michael@0:       let winUtils = this._domWin.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowUtils);
michael@0:       winUtils.leaveModalState();
michael@0:       this.fireDialogEvent(this._domWin, "DOMModalDialogClosed");
michael@0:     }
michael@0: 
michael@0:     if (this._filePath)
michael@0:       return Ci.nsIFilePicker.returnOK;
michael@0: 
michael@0:     return Ci.nsIFilePicker.returnCancel;
michael@0:   },
michael@0: 
michael@0:   open: function(callback) {
michael@0:     this._callback = callback;
michael@0:     this._sendMessage();
michael@0:   },
michael@0: 
michael@0:   _sendMessage: function() {
michael@0:     let msg = {
michael@0:       type: "FilePicker:Show",
michael@0:       guid: this.guid,
michael@0:     };
michael@0: 
michael@0:     // Knowing the window lets us destroy any temp files when the tab is closed
michael@0:     // Other consumers of the file picker may have to either wait for Android
michael@0:     // to clean up the temp dir (not guaranteed) or clean up after themselves.
michael@0:     let win = Services.wm.getMostRecentWindow('navigator:browser');
michael@0:     let tab = win.BrowserApp.getTabForWindow(this._domWin.top)
michael@0:     if (tab) {
michael@0:       msg.tabId = tab.id;
michael@0:     }
michael@0: 
michael@0:     if (!this._extensionsFilter && !this._mimeTypeFilter) {
michael@0:       // If neither filters is set show anything we can.
michael@0:       msg.mode = "mimeType";
michael@0:       msg.mimeType = "*/*";
michael@0:     } else if (this._extensionsFilter) {
michael@0:       msg.mode = "extension";
michael@0:       msg.extensions = this._extensionsFilter;
michael@0:     } else {
michael@0:       msg.mode = "mimeType";
michael@0:       msg.mimeType = this._mimeTypeFilter;
michael@0:     }
michael@0: 
michael@0:     this.sendMessageToJava(msg);
michael@0:   },
michael@0: 
michael@0:   sendMessageToJava: function(aMsg) {
michael@0:     Services.androidBridge.handleGeckoMessage(aMsg);
michael@0:   },
michael@0: 
michael@0:   observe: function(aSubject, aTopic, aData) {
michael@0:     let data = JSON.parse(aData);
michael@0:     if (data.guid != this.guid)
michael@0:       return;
michael@0: 
michael@0:     this._filePath = null;
michael@0:     if (data.file)
michael@0:       this._filePath = data.file;
michael@0: 
michael@0:     this._promptActive = false;
michael@0: 
michael@0:     if (this._callback) {
michael@0:       this._callback.done(this._filePath ? Ci.nsIFilePicker.returnOK : Ci.nsIFilePicker.returnCancel);
michael@0:     }
michael@0:     delete this._callback;
michael@0:   },
michael@0: 
michael@0:   getEnumerator: function(files, mapFunction) {
michael@0:     return {
michael@0:       QueryInterface: XPCOMUtils.generateQI([Ci.nsISimpleEnumerator]),
michael@0:       mFiles: files,
michael@0:       mIndex: 0,
michael@0:       hasMoreElements: function() {
michael@0:         return (this.mIndex < this.mFiles.length);
michael@0:       },
michael@0:       getNext: function() {
michael@0:         if (this.mIndex >= this.mFiles.length) {
michael@0:           throw Components.results.NS_ERROR_FAILURE;
michael@0:         }
michael@0:         return mapFunction(this.mFiles[this.mIndex++]);
michael@0:       }
michael@0:     };
michael@0:   },
michael@0: 
michael@0:   fireDialogEvent: function(aDomWin, aEventName) {
michael@0:     // accessing the document object can throw if this window no longer exists. See bug 789888.
michael@0:     try {
michael@0:       if (!aDomWin.document)
michael@0:         return;
michael@0:       let event = aDomWin.document.createEvent("Events");
michael@0:       event.initEvent(aEventName, true, true);
michael@0:       let winUtils = aDomWin.QueryInterface(Ci.nsIInterfaceRequestor)
michael@0:                            .getInterface(Ci.nsIDOMWindowUtils);
michael@0:       winUtils.dispatchEventToChromeOnly(aDomWin, event);
michael@0:     } catch(ex) {
michael@0:     }
michael@0:   },
michael@0: 
michael@0:   classID: Components.ID("{18a4e042-7c7c-424b-a583-354e68553a7f}"),
michael@0:   QueryInterface: XPCOMUtils.generateQI([Ci.nsIFilePicker, Ci.nsIObserver])
michael@0: };
michael@0: 
michael@0: this.NSGetFactory = XPCOMUtils.generateNSGetFactory([FilePicker]);