src/smartxml/core.js

   1 define([
   2
   3 ], function() {
   4
   5 'use strict';
   6 /* globals Node */
   7 var TEXT_NODE = Node.TEXT_NODE;
   8
   9 var INSERTION = function(implementation) {
  10     var toret = function(node) {
  11         var insertion = this.getNodeInsertion(node),
  12             nodeWasContained = this.document.containsNode(insertion.ofNode),
  13             nodeParent;
  14         if(!(this.document.containsNode(this))) {
  15             nodeParent = insertion.ofNode.parent();
  16         }
  17         implementation.call(this, insertion.ofNode.nativeNode);
  18         this.triggerChangeEvent(insertion.insertsNew ? 'nodeAdded' : 'nodeMoved', {node: insertion.ofNode}, nodeParent, nodeWasContained);
  19         return insertion.ofNode;
  20     };
  21     return toret;
  22 };
  23
  24 var documentNodeTransformations = {
  25     detach: function() {
  26         var parent = this.parent();
  27         this._$.detach();
  28         this.triggerChangeEvent('nodeDetached', {parent: parent});
  29         return this;
  30     },
  31
  32     replaceWith: function(node) {
  33         var toret;
  34         if(this.isRoot()) {
  35             return this.document.replaceRoot(node);
  36         }
  37         toret = this.after(node);
  38         this.detach();
  39         return toret;
  40     },
  41
  42     after: INSERTION(function(nativeNode) {
  43         return this._$.after(nativeNode);
  44     }),
  45
  46     before: INSERTION(function(nativeNode) {
  47         return this._$.before(nativeNode);
  48     }),
  49
  50     wrapWith: function(node) {
  51         var insertion = this.getNodeInsertion(node);
  52         if(this.parent()) {
  53             this.before(insertion.ofNode);
  54         }
  55         insertion.ofNode.append(this);
  56         return insertion.ofNode;
  57     },
  58
  59     /**
  60     * Removes parent of a node if node has no siblings.
  61     */
  62     unwrap: function() {
  63         if(this.isRoot()) {
  64             return;
  65         }
  66         var parent = this.parent(),
  67             grandParent;
  68         if(parent.contents().length === 1) {
  69             grandParent = parent.parent();
  70             parent.unwrapContent();
  71             return grandParent;
  72         }
  73     }
  74 };
  75
  76 var elementNodeTransformations = {
  77
  78     detach: function() {
  79         var next;
  80         if(this.parent() && this.isSurroundedByTextElements()) {
  81             next = this.next();
  82             this.prev().appendText(next.getText());
  83             next.detach();
  84         }
  85         return this.__super__.detach();
  86     },
  87
  88     setTag: function(tagName) {
  89         var node = this.document.createDocumentNode({tagName: tagName}),
  90             oldTagName = this.getTagName(),
  91             myContents = this._$.contents();
  92
  93         this.getAttrs().forEach(function(attribute) {
  94             node.setAttr(attribute.name, attribute.value, true);
  95         });
  96         node.setData(this.getData());
  97
  98         if(this.sameNode(this.document.root)) {
  99             this.document._defineDocumentProperties(node._$);
 100         }
 101         this._$.replaceWith(node._$);
 102         this._setNativeNode(node._$[0]);
 103         this._$.append(myContents);
 104         this.triggerChangeEvent('nodeTagChange', {oldTagName: oldTagName, newTagName: this.getTagName()});
 105     },
 106
 107
 108     setAttr: function(name, value, silent) {
 109         var oldVal = this.getAttr(name);
 110         this._$.attr(name, value);
 111         if(!silent) {
 112             this.triggerChangeEvent('nodeAttrChange', {attr: name, oldVal: oldVal, newVal: value});
 113         }
 114     },
 115
 116     append: INSERTION(function(nativeNode) {
 117         this._$.append(nativeNode);
 118     }),
 119
 120     prepend: INSERTION(function(nativeNode) {
 121         this._$.prepend(nativeNode);
 122     }),
 123
 124     insertAtIndex: function(nativeNode, index) {
 125         var contents = this.contents();
 126         if(index < contents.length) {
 127             return contents[index].before(nativeNode);
 128         } else if(index === contents.length) {
 129             return this.append(nativeNode);
 130         }
 131     },
 132
 133     unwrapContent: function() {
 134         var parent = this.parent();
 135         if(!parent) {
 136             return;
 137         }
 138
 139         var myContents = this.contents(),
 140             myIdx = parent.indexOf(this);
 141
 142
 143         if(myContents.length === 0) {
 144             return this.detach();
 145         }
 146
 147         var prev = this.prev(),
 148             next = this.next(),
 149             moveLeftRange, moveRightRange, leftMerged;
 150
 151         if(prev && (prev.nodeType === TEXT_NODE) && (myContents[0].nodeType === TEXT_NODE)) {
 152             prev.appendText(myContents[0].getText());
 153             myContents[0].detach();
 154             moveLeftRange = true;
 155             leftMerged = true;
 156         } else {
 157             leftMerged = false;
 158         }
 159
 160         if(!(leftMerged && myContents.length === 1)) {
 161             var lastContents = _.last(myContents);
 162             if(next && (next.nodeType === TEXT_NODE) && (lastContents.nodeType === TEXT_NODE)) {
 163                 next.prependText(lastContents.getText());
 164                 lastContents.detach();
 165                 moveRightRange = true;
 166             }
 167         }
 168
 169         var childrenLength = this.contents().length;
 170         this.contents().forEach(function(child) {
 171             this.before(child);
 172         }.bind(this));
 173
 174         this.detach();
 175
 176         return {
 177             element1: parent.contents()[myIdx + (moveLeftRange ? -1 : 0)],
 178             element2: parent.contents()[myIdx + childrenLength-1 + (moveRightRange ? 1 : 0)]
 179         };
 180     },
 181
 182     wrapText: function(params) {
 183         return this.document._wrapText(_.extend({inside: this}, params));
 184     }
 185 };
 186
 187 var textNodeTransformations = {
 188     setText: function(text) {
 189         //console.log('smartxml: ' + text);
 190         this.nativeNode.data = text;
 191         this.triggerTextChangeEvent();
 192     },
 193
 194     appendText: function(text) {
 195         this.nativeNode.data = this.nativeNode.data + text;
 196         this.triggerTextChangeEvent();
 197     },
 198
 199     prependText: function(text) {
 200         this.nativeNode.data = text + this.nativeNode.data;
 201         this.triggerTextChangeEvent();
 202     },
 203
 204     wrapWith: function(desc) {
 205         if(typeof desc.start === 'number' && typeof desc.end === 'number') {
 206             return this.document._wrapText({
 207                 inside: this.parent(),
 208                 textNodeIdx: this.parent().indexOf(this),
 209                 offsetStart: Math.min(desc.start, desc.end),
 210                 offsetEnd: Math.max(desc.start, desc.end),
 211                 _with: {tagName: desc.tagName, attrs: desc.attrs}
 212             });
 213         } else {
 214             return this.__super__.wrapWith.call(this, desc);
 215         }
 216     },
 217
 218     split: function(params) {
 219         var parentElement = this.parent(),
 220             passed = false,
 221             succeedingChildren = [],
 222             prefix = this.getText().substr(0, params.offset),
 223             suffix = this.getText().substr(params.offset);
 224
 225         parentElement.contents().forEach(function(child) {
 226             if(passed) {
 227                 succeedingChildren.push(child);
 228             }
 229             if(child.sameNode(this)) {
 230                 passed = true;
 231             }
 232         }.bind(this));
 233
 234         if(prefix.length > 0) {
 235             this.setText(prefix);
 236         }
 237         else {
 238             this.detach();
 239         }
 240
 241         var attrs = {};
 242         parentElement.getAttrs().forEach(function(attr) {attrs[attr.name] = attr.value; });
 243         var newElement = this.document.createDocumentNode({tagName: parentElement.getTagName(), attrs: attrs});
 244         parentElement.after(newElement);
 245
 246         if(suffix.length > 0) {
 247             newElement.append({text: suffix});
 248         }
 249         succeedingChildren.forEach(function(child) {
 250             newElement.append(child);
 251         });
 252
 253         return {first: parentElement, second: newElement};
 254     }
 255 };
 256
 257 var documentTransformations = {
 258     wrapNodes: function(params) {
 259         if(!(params.node1.parent().sameNode(params.node2.parent()))) {
 260             throw new Error('Wrapping non-sibling nodes not supported.');
 261         }
 262
 263         var parent = params.node1.parent(),
 264             parentContents = parent.contents(),
 265             wrapper = this.createDocumentNode({
 266                 tagName: params._with.tagName,
 267                 attrs: params._with.attrs}),
 268             idx1 = parent.indexOf(params.node1),
 269             idx2 = parent.indexOf(params.node2);
 270
 271         if(idx1 > idx2) {
 272             var tmp = idx1;
 273             idx1 = idx2;
 274             idx2 = tmp;
 275         }
 276
 277         var insertingMethod, insertingTarget;
 278         if(idx1 === 0) {
 279             insertingMethod = 'prepend';
 280             insertingTarget = parent;
 281         } else {
 282             insertingMethod = 'after';
 283             insertingTarget = parentContents[idx1-1];
 284         }
 285
 286         for(var i = idx1; i <= idx2; i++) {
 287             wrapper.append(parentContents[i].detach());
 288         }
 289
 290         insertingTarget[insertingMethod](wrapper);
 291         return wrapper;
 292     },
 293
 294     _wrapText: function(params) {
 295         params = _.extend({textNodeIdx: 0}, params);
 296         if(typeof params.textNodeIdx === 'number') {
 297             params.textNodeIdx = [params.textNodeIdx];
 298         }
 299
 300         var contentsInside = params.inside.contents(),
 301             idx1 = Math.min.apply(Math, params.textNodeIdx),
 302             idx2 = Math.max.apply(Math, params.textNodeIdx),
 303             textNode1 = contentsInside[idx1],
 304             textNode2 = contentsInside[idx2],
 305             sameNode = textNode1.sameNode(textNode2),
 306             prefixOutside = textNode1.getText().substr(0, params.offsetStart),
 307             prefixInside = textNode1.getText().substr(params.offsetStart),
 308             suffixInside = textNode2.getText().substr(0, params.offsetEnd),
 309             suffixOutside = textNode2.getText().substr(params.offsetEnd)
 310         ;
 311
 312         if(!(textNode1.parent().sameNode(textNode2.parent()))) {
 313             throw new Error('Wrapping text in non-sibling text nodes not supported.');
 314         }
 315
 316         var wrapperElement = this.createDocumentNode({tagName: params._with.tagName, attrs: params._with.attrs});
 317         textNode1.after(wrapperElement);
 318         textNode1.detach();
 319
 320         if(prefixOutside.length > 0) {
 321             wrapperElement.before({text:prefixOutside});
 322         }
 323         if(sameNode) {
 324             var core = textNode1.getText().substr(params.offsetStart, params.offsetEnd - params.offsetStart);
 325             wrapperElement.append({text: core});
 326         } else {
 327             textNode2.detach();
 328             if(prefixInside.length > 0) {
 329                 wrapperElement.append({text: prefixInside});
 330             }
 331             for(var i = idx1 + 1; i < idx2; i++) {
 332                 wrapperElement.append(contentsInside[i]);
 333             }
 334             if(suffixInside.length > 0) {
 335                 wrapperElement.append({text: suffixInside});
 336             }
 337         }
 338         if(suffixOutside.length > 0) {
 339             wrapperElement.after({text: suffixOutside});
 340         }
 341         return wrapperElement;
 342     },
 343     replaceRoot: function(node) {
 344         var insertion = this.getNodeInsertion(node);
 345         this.root.detach();
 346         this._defineDocumentProperties(insertion.ofNode._$);
 347         insertion.ofNode.triggerChangeEvent('nodeAdded');
 348         return insertion.ofNode;
 349     }
 350 }
 351
 352 return {
 353     document: {
 354         transformations: documentTransformations
 355     },
 356     documentNode: {
 357         transformations: documentNodeTransformations
 358     },
 359     elementNode: {
 360         transformations: elementNodeTransformations
 361     },
 362     textNode: {
 363         transformations: textNodeTransformations
 364     }
 365 };
 366
 367 });