e125db5b5fdf10d7e6f626d690b8f94606313ebd
[fnpeditor.git] / modules / documentCanvas / canvas / canvas.js
1 define([
2 'libs/jquery-1.9.1.min',
3 'libs/underscore-min',
4 'modules/documentCanvas/canvas/documentElement'
5 ], function($, _, documentElement) {
6     
7 'use strict';
8
9 var Canvas = function(wlxml) {
10     this.loadWlxml(wlxml);
11 };
12
13 $.extend(Canvas.prototype, {
14
15     loadWlxml: function(wlxml) {
16         var d = wlxml ? $($.trim(wlxml)) : null;
17         if(d) {
18             var wrapper = $('<div>');
19             wrapper.append(d);
20             
21             wrapper.find('*').replaceWith(function() {
22                 var currentTag = $(this);
23                 if(currentTag.attr('wlxml-tag'))
24                     return;
25                 var toret = $('<div>').attr('wlxml-tag', currentTag.prop('tagName').toLowerCase());
26                 //toret.attr('id', 'xxxxxxxx-xxxx-xxxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {var r = Math.random()*16|0,v=c=='x'?r:r&0x3|0x8;return v.toString(16);}));
27                 for(var i = 0; i < this.attributes.length; i++) {
28                     var attr = this.attributes.item(i);
29                     var value = attr.name === 'class' ? attr.value.replace(/\./g, '-') : attr.value;
30                     toret.attr('wlxml-' + attr.name, value);
31                 }
32                 toret.append(currentTag.contents());
33                 return toret;
34             });
35
36             wrapper.find(':not(iframe)').addBack().contents()
37                 .filter(function() {return this.nodeType === Node.TEXT_NODE})
38                 .each(function() {
39
40                     var el = $(this);
41                     
42                     // TODO: use DocumentElement API
43                     var spanParent = el.parent().attr('wlxml-tag') === 'span',
44                         spanBefore = el.prev().length > 0  && $(el.prev()[0]).attr('wlxml-tag') === 'span',
45                         spanAfter = el.next().length > 0 && $(el.next()[0]).attr('wlxml-tag') === 'span';
46                         
47                     if(spanParent || spanBefore || spanAfter) {
48                         var startSpace = /\s/g.test(this.data.substr(0,1));
49                         var endSpace = /\s/g.test(this.data.substr(-1)) && this.data.length > 1;
50                         var trimmed = $.trim(this.data);
51                         this.data = (startSpace && (spanParent || spanBefore) ? ' ' : '')
52                                     + trimmed
53                                     + (endSpace && (spanParent || spanAfter) ? ' ' : '');
54
55                     } else {
56                         var oldLength = this.data.length;
57                         this.data = $.trim(this.data);
58                         if(this.data.length === 0 && oldLength > 0 && el.parent().contents().length === 1)
59                             this.data = ' ';
60                         if(this.data.length === 0)
61                             $(this).remove();
62                     }
63                 });
64             
65             this.d = wrapper.children(0);
66             this.d.unwrap();
67         } else {
68             this.d = null;
69         }
70     },
71
72     doc: function() {
73         if(this.d === null)
74             return null;
75         return documentElement.wrap(this.d.get(0), this); //{wlxmlTag: this.d.prop('tagName')};
76     },
77
78     wrapText: function(params) {
79         params = _.extend({textNodeIdx: 0}, params);
80         if(typeof params.textNodeIdx === 'number')
81             params.textNodeIdx = [params.textNodeIdx];
82         
83         var childrenInside = params.inside.children(),
84             idx1 = Math.min.apply(Math, params.textNodeIdx),
85             idx2 = Math.max.apply(Math, params.textNodeIdx),
86             textNode1 = childrenInside[idx1],
87             textNode2 = childrenInside[idx2],
88             sameNode = textNode1.sameNode(textNode2),
89             prefixOutside = textNode1.getText().substr(0, params.offsetStart),
90             prefixInside = textNode1.getText().substr(params.offsetStart),
91             suffixInside = textNode2.getText().substr(0, params.offsetEnd),
92             suffixOutside = textNode2.getText().substr(params.offsetEnd)
93         ;
94         
95         var wrapperElement = documentElement.DocumentNodeElement.create({tag: params._with.tag, klass: params._with.klass});
96         textNode1.after(wrapperElement);
97         textNode1.detach();
98         
99         if(prefixOutside.length > 0)
100             wrapperElement.before({text:prefixOutside});
101         if(sameNode) {
102             var core = textNode1.getText().substr(params.offsetStart, params.offsetEnd - params.offsetStart);
103             wrapperElement.append({text: core});
104         } else {
105             textNode2.detach();
106             if(prefixInside.length > 0)
107                 wrapperElement.append({text: prefixInside});
108             for(var i = idx1 + 1; i < idx2; i++) {
109                 wrapperElement.append(childrenInside[i]);
110             }
111             if(suffixInside.length > 0)
112                 wrapperElement.append({text: suffixInside});
113         }
114         if(suffixOutside.length > 0)
115             wrapperElement.after({text: suffixOutside});
116         return wrapperElement;
117     },
118     list: {}
119 });
120
121 $.extend(Canvas.prototype.list, {
122     create: function(params) {
123         if(!(params.element1.parent().sameNode(params.element2.parent())))
124             return false;
125             
126         var parent = params.element1.parent();
127         
128         if(parent.childIndex(params.element1) > parent.childIndex(params.element2)) {
129             var tmp = params.element1;
130             params.element1 = params.element2;
131             params.element2 = tmp;
132         }
133         
134         var elementsToWrap = [];
135         
136         var place = 'before';
137         var canvas = this;
138         parent.children().forEach(function(element) {
139             if(element.sameNode(params.element1))
140                 place = 'inside';
141             if(place === 'inside') {
142                 if(element instanceof documentElement.DocumentTextElement) {
143                     element = element.wrapWithNodeElement({tag: 'div', klass: 'list.item'});
144                     if(element.children()[0].sameNode(params.element1))
145                         params.element1 = element;
146                 }
147                 element.setWlxmlClass('item');
148                 elementsToWrap.push(element);
149             }
150             if(element.sameNode(params.element2))
151                 return false;
152         });
153         
154         var listElement = documentElement.DocumentNodeElement.create({tag: 'div', klass: 'list-items' + (params.type === 'enum' ? '-enum' : '')});
155         
156         var toret;
157         if(parent.is('list')) {
158             listElement.wrap({tag: 'div', klass: 'item'});
159             toret = listElement.parent();
160         } else {
161             toret = listElement;
162         }  
163         
164         params.element1.before(toret);
165         
166         elementsToWrap.forEach(function(element) {
167             element.detach();
168             listElement.append(element);
169         });
170     },
171     extractItems: function(params) {
172         var list = params.element1.parent();
173         if(!list.is('list') || !(list.sameNode(params.element2.parent())))
174             return false;
175
176         var idx1 = list.childIndex(params.element1),
177             idx2 = list.childIndex(params.element2),
178             precedingItems = [],
179             extractedItems = [],
180             succeedingItems = [],
181             items = list.children(),
182             listIsNested = list.parent().getWlxmlClass() === 'item',
183             i;
184
185         if(idx1 > idx2) {
186             var tmp = idx1; idx1 = idx2; idx2 = tmp;
187         }
188
189         items.forEach(function(item, idx) {
190             if(idx < idx1)
191                 precedingItems.push(item);
192             else if(idx >= idx1 && idx <= idx2) {
193                 extractedItems.push(item);
194             }
195             else {
196                 succeedingItems.push(item);
197             }
198         });
199
200         var reference = listIsNested ? list.parent() : list;
201         if(precedingItems.length === 0 && succeedingItems.length === 0) {
202             var list = reference;
203             extractedItems.forEach(function(item) {
204                 reference.after(item);
205                 reference = item;
206                 if(!listIsNested)
207                     item.setWlxmlClass(null);
208             });
209             list.detach();
210         } else if(precedingItems.length > 0 && succeedingItems.length === 0) {
211             extractedItems.forEach(function(item) {
212                 reference.after(item);
213                 reference = item;
214                 if(!listIsNested)
215                     item.setWlxmlClass(null);
216             });
217         } else if(precedingItems.length === 0 && succeedingItems.length > 0) {
218             extractedItems.forEach(function(item) {
219                 reference.before(item);
220                 if(!listIsNested)
221                     item.setWlxmlClass(null);
222             });
223         } else {
224             var ptr = reference;
225             extractedItems.forEach(function(item) {
226                 ptr.after(item);
227                 if(!listIsNested)
228                     item.setWlxmlClass(null);
229                 ptr = item;
230             });
231             var secondList = documentElement.DocumentNodeElement.create({tag: 'div', klass:'list-items'}, this),
232                 toAdd = secondList;
233             
234             if(listIsNested) {
235                 toAdd = secondList.wrapWithNodeElement({tag: 'div', klass:'item'});
236             }
237             succeedingItems.forEach(function(item) {
238                 secondList.append(item);
239             });
240
241             ptr.after(toAdd);
242         }
243     }
244 });
245
246 return {
247     fromXML: function(xml) {
248         return new Canvas(xml);
249     }
250 };
251
252 });