src/editor/modules/documentCanvas/documentCanvas.js

   1 // Module that implements main WYSIWIG edit area
   2
   3 define([
   4 'libs/jquery',
   5 'libs/underscore',
   6 'fnpjs/logging/logging',
   7 './canvas/canvas',
   8 'libs/text!./template.html'], function($, _, logging, canvas3, template) {
   9
  10 'use strict';
  11
  12
  13 var logger = logging.getLogger('documentCanvas');
  14
  15 return function(sandbox) {
  16
  17     var canvasElements = [];
  18
  19     sandbox.getPlugins().forEach(function(plugin) {
  20         canvasElements = canvasElements.concat(plugin.canvasElements || []);
  21     });
  22
  23     var canvas = canvas3.fromXMLDocument(null, canvasElements, {
  24         user: sandbox.getConfig().user
  25     });
  26     var canvasWrapper = $(template);
  27     var shownAlready = false;
  28     var scrollbarPosition = 0,
  29         actionHandlers = {},
  30         cursorPosition;
  31
  32
  33     canvas.on('selectionChanged', function(selection) {
  34         sandbox.publish('selectionChanged', selection);
  35     });
  36
  37     canvasWrapper.onShow = function() {
  38         if(!shownAlready) {
  39             shownAlready = true;
  40             canvas.setCurrentElement(canvas.doc().getVerticallyFirstTextElement());
  41         } else {
  42             canvas.setCursorPosition(cursorPosition);
  43             this.find('#rng-module-documentCanvas-contentWrapper').scrollTop(scrollbarPosition);
  44         }
  45     };
  46
  47     canvasWrapper.onHide = function() {
  48        scrollbarPosition = this.find('#rng-module-documentCanvas-contentWrapper').scrollTop();
  49        cursorPosition = canvas.getCursor().getPosition();
  50     };
  51
  52     /* public api */
  53     return {
  54         start: function() {
  55             sandbox.getPlugins().forEach(function(plugin) {
  56                 var handlers;
  57                 if(plugin.canvas) {
  58                     handlers = plugin.canvas.actionHandlers;
  59                     if(handlers && !_.isArray(handlers)) {
  60                         handlers = [handlers];
  61                     }
  62                     actionHandlers[plugin.name] = handlers;
  63                 }
  64             });
  65             sandbox.publish('ready');
  66         },
  67         getView: function() {
  68             return canvasWrapper;
  69         },
  70         getCanvas: function() {
  71             return canvas;
  72         },
  73         setDocument: function(wlxmlDocument) {
  74             canvas.loadWlxmlDocument(wlxmlDocument);
  75             canvasWrapper.find('#rng-module-documentCanvas-contentWrapper').empty().append(canvas.view());
  76         },
  77         onAfterActionExecuted: function(action, ret) {
  78             if(ret && ret.isValid && ret.isValid()) {
  79                 logger.debug('The action returned a valid fragment');
  80                 return canvas.select(ret);
  81             }
  82
  83             logger.debug('No valid fragment returned from the action');
  84
  85             (actionHandlers[action.getPluginName()] || []).forEach(function(handler) {
  86                 handler(canvas, action, ret);
  87             });
  88         }
  89     };
  90
  91 };
  92
  93 });