src/editor/modules/documentCanvas/canvas/genericElement.js

   1 define(function(require) {
   2
   3 'use strict';
   4
   5 var $ = require('libs/jquery'),
   6     documentElement = require('./documentElement'),
   7     utils = require('./utils'),
   8     wlxmlUtils = require('utils/wlxml');
   9
  10 var labelWidget = function(tag, klass) {
  11     return $('<span>')
  12         .addClass('canvas-widget canvas-widget-label')
  13         .text(wlxmlUtils.getTagLabel(tag) + (klass ? ' / ' + wlxmlUtils.getClassLabel(klass) : ''));
  14 };
  15 void(labelWidget); // for linters; labelWidget is unused on purpose for now
  16
  17 var DocumentNodeElement = documentElement.DocumentNodeElement;
  18
  19 var generic = Object.create(DocumentNodeElement.prototype);
  20
  21 $.extend(generic, {
  22     init: function() {
  23         DocumentNodeElement.prototype.init.call(this);
  24         this._container()
  25             .attr('wlxml-tag', this.wlxmlNode.getTagName());
  26         this.setWlxmlClass(this.wlxmlNode.getClass());
  27         this.wlxmlNode.contents().forEach(function(node) {
  28             this._container().append(this.canvas.createElement(node).dom);
  29         }.bind(this));
  30         this.refresh();
  31     },
  32
  33     refresh: function() {
  34         if(this.wlxmlNode.getTagName() === 'span') {
  35             if(this.containsBlock()) {
  36                 this.displayAsBlock();
  37             } else {
  38                 this.displayInline();
  39             }
  40         } else {
  41             this.displayAsBlock();
  42         }
  43     },
  44
  45     getFirst: function(e1, e2) {
  46         var idx1 = this.childIndex(e1),
  47             idx2 = this.childIndex(e2);
  48         if(e1 === null || e2 === null) {
  49             return undefined;
  50         }
  51         return idx1 <= idx2 ? e1: e2;
  52     },
  53
  54     children: function() {
  55         var element = this,
  56             toret = [];
  57         this._container().contents().each(function() {
  58             var childElement = element.canvas.getDocumentElement(this);
  59             if(childElement === undefined) {
  60                 return true;
  61             }
  62
  63             toret.push(childElement);
  64         });
  65         return toret;
  66     },
  67
  68     getVerticallyFirstTextElement: function() {
  69         var toret;
  70         this.children().some(function(child) {
  71             if(child instanceof documentElement.DocumentTextElement) {
  72                 toret = child;
  73                 return true; // break
  74             } else {
  75                 toret = child.getVerticallyFirstTextElement();
  76                 if(toret) {
  77                     return true; // break
  78                 }
  79             }
  80         });
  81         return toret;
  82     },
  83
  84     onNodeAttrChange: function(event) {
  85         if(event.meta.attr === 'class') {
  86             this.setWlxmlClass(event.meta.newVal); //
  87         }
  88     },
  89     onNodeAdded: function(event) {
  90         if(event.meta.node.isRoot()) {
  91             this.canvas.reloadRoot();
  92             return;
  93         }
  94
  95         var nodeIndex = event.meta.node.getIndex(),
  96             referenceElement, referenceAction, actionArg;
  97
  98         if(nodeIndex === 0) {
  99             referenceElement = this;
 100             referenceAction = 'prepend';
 101         } else {
 102             referenceElement = this.children()[nodeIndex-1];
 103             referenceAction = 'after';
 104         }
 105
 106         if(event.type === 'nodeMoved') {
 107             actionArg = utils.getElementForNode(event.meta.node, event.meta.parent);
 108             if(actionArg.sameNode(referenceElement)) {
 109                 referenceElement = this.children()[nodeIndex];
 110             }
 111         } else {
 112             actionArg = event.meta.node;
 113         }
 114
 115         referenceElement[referenceAction](actionArg);
 116     },
 117     onNodeMoved: function(event) {
 118         return this.onNodeAdded.call(this, event);
 119     },
 120     onNodeDetached: function(event) {
 121         if(event.meta.node.sameNode(this)) {
 122             this.detach();
 123         } else {
 124             this.children().some(function(child) {
 125                 if(child.wlxmlNode.sameNode(event.meta.node)) {
 126                     child.detach();
 127                     return true;
 128                 }
 129             });
 130         }
 131     },
 132     onNodeTextChange: function(event) {
 133         var toSet = event.meta.node.getText();
 134         this.children().some(function(child) {
 135             if(child.wlxmlNode.sameNode(event.meta.node)) {
 136                 if(toSet === '') {
 137                     toSet = utils.unicode.ZWS;
 138                 }
 139                 if(toSet !== child.getText()) {
 140                     child.setText(toSet);
 141                 }
 142                 return true;
 143             }
 144         });
 145     },
 146
 147
 148     ///
 149
 150     containsBlock: function() {
 151         return this.children()
 152             .filter(function(child) {
 153                 return child instanceof documentElement.DocumentNodeElement;
 154             })
 155             .some(function(child) {
 156                 if(child.isBlock()) {
 157                     return true;
 158                 } else {
 159                     return child.containsBlock();
 160                 }
 161             });
 162     },
 163
 164     prepend: function(param) {
 165         var element;
 166         if(param instanceof documentElement.DocumentElement) {
 167             element = param;
 168         } else {
 169             element = this.canvas.createElement(param);
 170         }
 171         this._container().prepend(element.dom);
 172         this.refreshPath();
 173         return element;
 174     },
 175
 176     childIndex: function(child) {
 177         var children = this.children(),
 178             toret = null;
 179         children.forEach(function(c, idx) {
 180             if(c.sameNode(child)) {
 181                 toret = idx;
 182                 return false;
 183             }
 184         });
 185         return toret;
 186     },
 187
 188     getWlxmlClass: function() {
 189         var klass = this._container().attr('wlxml-class');
 190         if(klass) {
 191             return klass.replace(/-/g, '.');
 192         }
 193         return undefined;
 194     },
 195     setWlxmlClass: function(klass) {
 196         if(klass === this.getWlxmlClass()) {
 197             return;
 198         }
 199         if(klass) {
 200             this._container().attr('wlxml-class', klass.replace(/\./g, '-'));
 201         }
 202         else {
 203             this._container().removeAttr('wlxml-class');
 204         }
 205         this.refreshPath();
 206     }
 207 });
 208
 209
 210 return generic;
 211
 212
 213
 214 });