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493 lines
18 KiB
JavaScript
493 lines
18 KiB
JavaScript
/**
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* @license
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* Copyright (C) 2012 KO GmbH <copyright@kogmbh.com>
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*
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* @licstart
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* The JavaScript code in this page is free software: you can redistribute it
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* and/or modify it under the terms of the GNU Affero General Public License
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* (GNU AGPL) as published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version. The code is distributed
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU AGPL for more details.
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*
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* As additional permission under GNU AGPL version 3 section 7, you
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* may distribute non-source (e.g., minimized or compacted) forms of
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* that code without the copy of the GNU GPL normally required by
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* section 4, provided you include this license notice and a URL
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* through which recipients can access the Corresponding Source.
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*
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* As a special exception to the AGPL, any HTML file which merely makes function
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* calls to this code, and for that purpose includes it by reference shall be
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* deemed a separate work for copyright law purposes. In addition, the copyright
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* holders of this code give you permission to combine this code with free
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* software libraries that are released under the GNU LGPL. You may copy and
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* distribute such a system following the terms of the GNU AGPL for this code
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* and the LGPL for the libraries. If you modify this code, you may extend this
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* exception to your version of the code, but you are not obligated to do so.
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* If you do not wish to do so, delete this exception statement from your
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* version.
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*
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* This license applies to this entire compilation.
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* @licend
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* @source: http://www.webodf.org/
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* @source: http://gitorious.org/webodf/webodf/
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*/
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/*global define,runtime,gui,ops,document */
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define("webodf/editor/EditorSession", [
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"dojo/text!resources/fonts/fonts.css"
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], function (fontsCSS) { // fontsCSS is retrieved as a string, using dojo's text retrieval AMD plugin
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"use strict";
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runtime.libraryPaths = function () {
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return [ "../../webodf/lib" ];
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};
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runtime.loadClass("ops.OdtDocument");
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runtime.loadClass("ops.Session");
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runtime.loadClass("ops.NowjsOperationRouter");
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runtime.loadClass("ops.NowjsUserModel");
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runtime.loadClass("odf.OdfCanvas");
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runtime.loadClass("gui.CaretFactory");
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runtime.loadClass("gui.Caret");
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runtime.loadClass("gui.SessionController");
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runtime.loadClass("gui.SessionView");
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runtime.loadClass("gui.TrivialUndoManager");
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runtime.loadClass("core.EventNotifier");
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/**
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* Instantiate a new editor session attached to an existing operation session
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* @param {!ops.Session} session
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* @param {!string} memberid
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* @param {{viewOptions:gui.SessionViewOptions}} config
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* @constructor
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*/
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var EditorSession = function EditorSession(session, memberid, config) {
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var self = this,
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currentParagraphNode = null,
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currentNamedStyleName = null,
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currentStyleName = null,
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odtDocument = session.getOdtDocument(),
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textns = "urn:oasis:names:tc:opendocument:xmlns:text:1.0",
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formatting = odtDocument.getFormatting(),
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eventNotifier = new core.EventNotifier([
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EditorSession.signalUserAdded,
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EditorSession.signalUserRemoved,
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EditorSession.signalCursorMoved,
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EditorSession.signalParagraphChanged,
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EditorSession.signalStyleCreated,
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EditorSession.signalStyleDeleted,
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EditorSession.signalParagraphStyleModified,
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EditorSession.signalUndoStackChanged]);
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this.sessionController = new gui.SessionController(session, memberid);
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this.sessionView = new gui.SessionView(config.viewOptions, session, new gui.CaretFactory(self.sessionController));
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this.availableFonts = [];
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/*
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* @return {Array.{!string}}
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*/
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function getAvailableFonts() {
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var availableFonts, regex, matches;
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availableFonts = {};
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regex = /font-family *: *(?:\'([^']*)\'|\"([^"]*)\")/gm;
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matches = regex.exec(fontsCSS);
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while (matches) {
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availableFonts[matches[1] || matches[2]] = 1;
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matches = regex.exec(fontsCSS);
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}
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availableFonts = Object.keys(availableFonts);
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return availableFonts;
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}
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this.availableFonts = getAvailableFonts();
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function checkParagraphStyleName() {
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var newStyleName,
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newNamedStyleName;
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newStyleName = currentParagraphNode.getAttributeNS(textns, 'style-name');
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if (newStyleName !== currentStyleName) {
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currentStyleName = newStyleName;
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// check if named style is still the same
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newNamedStyleName = formatting.getFirstNamedParentStyleNameOrSelf(newStyleName);
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if (!newNamedStyleName) {
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// TODO: how to handle default styles?
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return;
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}
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// a named style
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if (newNamedStyleName !== currentNamedStyleName) {
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currentNamedStyleName = newNamedStyleName;
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self.emit(EditorSession.signalParagraphChanged, {
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type: 'style',
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node: currentParagraphNode,
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styleName: currentNamedStyleName
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});
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}
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}
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}
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/**
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* Creates a NCName from the passed string
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* @param {!string} name
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* @return {!string}
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*/
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function createNCName(name) {
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var letter,
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result = "";
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// encode
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for (var i = 0; i < name.length; i++) {
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letter = name[i];
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// simple approach, can be improved to not skip other allowed chars
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if (letter.match(/[a-zA-Z0-9.-_]/) !== null) {
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result += letter;
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} else {
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result += "_" + letter.charCodeAt(0).toString(16) + "_";
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}
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}
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// ensure leading char is from proper range
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if (result.match(/^[a-zA-Z_]/) === null) {
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result = "_" + result;
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}
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return result;
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}
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function uniqueParagraphStyleNCName(name) {
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var result,
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i = 0,
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ncMemberId = createNCName(memberid),
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ncName = createNCName(name);
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// create default paragraph style
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// memberid is used to avoid id conflicts with ids created by other users
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result = ncName + "_" + ncMemberId;
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// then loop until result is really unique
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while(formatting.hasParagraphStyle(result)) {
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result = ncName + "_" + i + "_" + ncMemberId;
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i++;
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}
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return result;
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}
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function trackCursor(cursor) {
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var node;
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node = odtDocument.getParagraphElement(cursor.getNode());
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if (!node) {
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return;
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}
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currentParagraphNode = node;
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checkParagraphStyleName();
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}
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function trackCurrentParagraph(info) {
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if (info.paragraphElement !== currentParagraphNode) {
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return;
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}
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checkParagraphStyleName();
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}
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// Custom signals, that make sense in the Editor context. We do not want to expose webodf's ops signals to random bits of the editor UI.
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odtDocument.subscribe(ops.OdtDocument.signalCursorAdded, function (cursor) {
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self.emit(EditorSession.signalUserAdded, cursor.getMemberId());
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trackCursor(cursor);
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});
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odtDocument.subscribe(ops.OdtDocument.signalCursorRemoved, function (memberId) {
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self.emit(EditorSession.signalUserRemoved, memberId);
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});
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odtDocument.subscribe(ops.OdtDocument.signalCursorMoved, function (cursor) {
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// Emit 'cursorMoved' only when *I* am moving the cursor, not the other users
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if (cursor.getMemberId() === memberid) {
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self.emit(EditorSession.signalCursorMoved, cursor);
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}
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});
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odtDocument.subscribe(ops.OdtDocument.signalStyleCreated, function (newStyleName) {
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self.emit(EditorSession.signalStyleCreated, newStyleName);
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});
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odtDocument.subscribe(ops.OdtDocument.signalStyleDeleted, function (styleName) {
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self.emit(EditorSession.signalStyleDeleted, styleName);
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});
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odtDocument.subscribe(ops.OdtDocument.signalParagraphStyleModified, function (styleName) {
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self.emit(EditorSession.signalParagraphStyleModified, styleName);
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});
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odtDocument.subscribe(ops.OdtDocument.signalParagraphChanged, trackCurrentParagraph);
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this.startEditing = function () {
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self.sessionController.startEditing();
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};
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this.endEditing = function () {
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self.sessionController.endEditing();
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};
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/**
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* Call all subscribers for the given event with the specified argument
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* @param {!string} eventid
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* @param {Object} args
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*/
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this.emit = function (eventid, args) {
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eventNotifier.emit(eventid, args);
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};
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/**
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* Subscribe to a given event with a callback
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* @param {!string} eventid
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* @param {!Function} cb
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*/
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this.subscribe = function (eventid, cb) {
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eventNotifier.subscribe(eventid, cb);
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};
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this.getUserDetailsAndUpdates = function (memberId, subscriber) {
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return session.getUserModel().getUserDetailsAndUpdates(memberId, subscriber);
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};
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this.unsubscribeUserDetailsUpdates = function (memberId, subscriber) {
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return session.getUserModel().unsubscribeUserDetailsUpdates(memberId, subscriber);
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};
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this.getCursorPosition = function () {
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return odtDocument.getCursorPosition(memberid);
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};
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this.getCursorSelection = function() {
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return odtDocument.getCursorSelection(memberid);
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};
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this.getOdfCanvas = function () {
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return odtDocument.getOdfCanvas();
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};
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this.getCurrentParagraph = function () {
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return currentParagraphNode;
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};
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this.getAvailableParagraphStyles = function () {
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return formatting.getAvailableParagraphStyles();
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};
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this.getCurrentSelectionStyle = function() {
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var cursor = odtDocument.getCursor(memberid),
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selectedRange;
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// no own cursor yet/currently added?
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if (!cursor) {
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return [];
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}
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selectedRange = cursor.getSelectedRange();
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if (selectedRange.collapsed) {
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return [formatting.getAppliedStylesForElement(cursor.getNode())];
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}
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return formatting.getAppliedStyles(selectedRange);
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};
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this.getCurrentParagraphStyle = function () {
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return currentNamedStyleName;
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};
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this.formatSelection = function(value) {
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var op = new ops.OpApplyStyle(),
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selection = self.getCursorSelection();
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op.init({
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memberid: memberid,
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position: selection.position,
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length: selection.length,
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info: value
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});
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session.enqueue(op);
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};
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this.setCurrentParagraphStyle = function (value) {
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var op;
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if (currentNamedStyleName !== value) {
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op = new ops.OpSetParagraphStyle();
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op.init({
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memberid: memberid,
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position: self.getCursorPosition(),
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styleName: value
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});
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session.enqueue(op);
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}
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};
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this.insertTable = function(initialRows, initialColumns, tableStyleName, tableColumnStyleName, tableCellStyleMatrix) {
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var op = new ops.OpInsertTable();
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op.init({
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memberid: memberid,
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position: self.getCursorPosition(),
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initialRows: initialRows,
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initialColumns: initialColumns,
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tableStyleName: tableStyleName,
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tableColumnStyleName: tableColumnStyleName,
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tableCellStyleMatrix: tableCellStyleMatrix
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});
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session.enqueue(op);
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};
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this.getParagraphStyleElement = function (styleName) {
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return odtDocument.getParagraphStyleElement(styleName);
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};
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/**
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* Returns if the style is used anywhere in the document
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* @param {!Element} styleElement
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* @return {boolean}
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*/
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this.isStyleUsed = function (styleElement) {
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return formatting.isStyleUsed(styleElement);
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};
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this.getParagraphStyleAttributes = function (styleName) {
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return odtDocument.getParagraphStyleAttributes(styleName);
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};
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/**
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* Creates and enqueues a paragraph-style cloning operation.
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* Returns the created id for the new style.
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* @param {!string} styleName id of the style to update
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* @param {!{paragraphProperties,textProperties}} setProperties properties which are set
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* @param {!{paragraphPropertyNames,textPropertyNames}=} removedProperties properties which are removed
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* @return {undefined}
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*/
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this.updateParagraphStyle = function (styleName, setProperties, removedProperties) {
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var op;
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op = new ops.OpUpdateParagraphStyle();
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op.init({
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memberid: memberid,
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styleName: styleName,
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setProperties: setProperties,
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removedProperties: (!removedProperties) ? {} : removedProperties
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});
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session.enqueue(op);
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};
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/**
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* Creates and enqueues a paragraph-style cloning operation.
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* Returns the created id for the new style.
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* @param {!string} styleName id of the style to clone
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* @param {!string} newStyleDisplayName display name of the new style
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* @return {!string}
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*/
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this.cloneParagraphStyle = function (styleName, newStyleDisplayName) {
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var newStyleName = uniqueParagraphStyleNCName(newStyleDisplayName),
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op;
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op = new ops.OpCloneParagraphStyle();
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op.init({
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memberid: memberid,
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styleName: styleName,
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newStyleName: newStyleName,
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newStyleDisplayName: newStyleDisplayName
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});
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session.enqueue(op);
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return newStyleName;
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};
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this.deleteStyle = function (styleName) {
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var op;
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op = new ops.OpDeleteParagraphStyle();
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op.init({
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memberid: memberid,
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styleName: styleName
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});
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session.enqueue(op);
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};
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/**
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* Returns an array of the declared fonts in the ODF document,
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* with 'duplicates' like Arial1, Arial2, etc removed. The alphabetically
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* first font name for any given family is kept.
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* The elements of the array are objects containing the font's name and
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* the family.
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* @return {Array.{Object}}
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*/
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this.getDeclaredFonts = function () {
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var fontMap = formatting.getFontMap(),
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usedFamilies = [],
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array = [],
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sortedNames,
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key,
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value,
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i;
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// Sort all the keys in the font map alphabetically
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sortedNames = Object.keys(fontMap);
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sortedNames.sort();
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for (i = 0; i < sortedNames.length; i += 1) {
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key = sortedNames[i];
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value = fontMap[key];
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// Use the font declaration only if the family is not already used.
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// Therefore we are able to discard the alphabetic successors of the first
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// font name.
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if (usedFamilies.indexOf(value) === -1) {
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array.push({
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name: key,
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family: value
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});
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if (value) {
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usedFamilies.push(value);
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}
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}
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}
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return array;
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};
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function undoStackModified(e) {
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self.emit(EditorSession.signalUndoStackChanged, e);
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}
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this.hasUndoManager = function() {
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return Boolean(self.sessionController.getUndoManager());
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};
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this.undo = function() {
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var undoManager = self.sessionController.getUndoManager();
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undoManager.moveBackward(1);
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};
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this.redo = function() {
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var undoManager = self.sessionController.getUndoManager();
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undoManager.moveForward(1);
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};
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this.subscribe(EditorSession.signalCursorMoved, trackCursor);
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function init() {
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var head = document.getElementsByTagName('head')[0],
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fontStyles = document.createElement('style');
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fontStyles.type = 'text/css';
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fontStyles.media = 'screen, print, handheld, projection';
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fontStyles.appendChild(document.createTextNode(fontsCSS));
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head.appendChild(fontStyles);
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odtDocument.subscribe(ops.OdtDocument.signalUndoStackChanged, undoStackModified);
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}
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init();
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};
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/**@const*/EditorSession.signalUserAdded = "userAdded";
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/**@const*/EditorSession.signalUserRemoved = "userRemoved";
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/**@const*/EditorSession.signalCursorMoved = "cursorMoved";
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/**@const*/EditorSession.signalParagraphChanged = "paragraphChanged";
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/**@const*/EditorSession.signalStyleCreated = "styleCreated";
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/**@const*/EditorSession.signalStyleDeleted = "styleDeleted";
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/**@const*/EditorSession.signalParagraphStyleModified = "paragraphStyleModified";
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/**@const*/EditorSession.signalUndoStackChanged = "signalUndoStackChanged";
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return EditorSession;
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});
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