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1 "use strict"; | |
haraken
2014/08/26 08:05:08
Add a copyright.
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2 | |
3 installClass("Document", function(DocumentPrototype) { | |
4 var styleSheet = [ | |
haraken
2014/08/26 08:05:08
We should have a way to write a CSS in a separate
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5 "div.header {", | |
6 " border-bottom: 2px solid black;", | |
7 " padding-bottom: 5px;", | |
8 " margin: 10px;", | |
9 "}", | |
10 "", | |
11 "div.collapsible > div.hidden {", | |
12 " display:none;", | |
13 "}", | |
14 "", | |
15 ".pretty-print {", | |
16 " margin-top: 1em;", | |
17 " margin-left: 20px;", | |
18 " font-family: monospace;", | |
19 " font-size: 13px;", | |
20 "}", | |
21 "", | |
22 "#webkit-xml-viewer-source-xml {", | |
23 " display: none;", | |
24 "}", | |
25 "", | |
26 ".collapsible-content {", | |
27 " margin-left: 1em;", | |
28 "}", | |
29 ".comment {", | |
30 " white-space: pre;", | |
31 "}", | |
32 "", | |
33 ".button {", | |
34 " -webkit-user-select: none;", | |
35 " cursor: pointer;", | |
36 " display: inline-block;", | |
37 " margin-left: -10px;", | |
38 " width: 10px;", | |
39 " background-repeat: no-repeat;", | |
40 " background-position: left top;", | |
41 " vertical-align: bottom;", | |
42 "}", | |
43 "", | |
44 ".collapse-button {", | |
45 " background-image: -webkit-canvas(arrowDown);", | |
46 " height: 10px;", | |
47 "}", | |
48 "", | |
49 ".expand-button {", | |
50 " background-image: -webkit-canvas(arrowRight);", | |
51 " height: 11px;", | |
52 "}"].join(''); | |
53 var nodeParentPairs = []; | |
54 var tree; | |
55 | |
56 function prepareWebKitXMLViewer(noStyleMessage) | |
57 { | |
58 var html = createHTMLElement('html'); | |
59 var head = createHTMLElement('head'); | |
60 html.appendChild(head); | |
61 var style = createHTMLElement('style'); | |
62 style.id = 'xml-viewer-style'; | |
63 style.appendChild(document.createTextNode(styleSheet)); | |
64 head.appendChild(style); | |
65 var body = createHTMLElement('body'); | |
66 html.appendChild(body); | |
67 var sourceXML = createHTMLElement('div'); | |
68 sourceXML.id = 'webkit-xml-viewer-source-xml'; | |
69 body.appendChild(sourceXML); | |
70 | |
71 var child; | |
72 while (child = document.firstChild) { | |
73 document.removeChild(child); | |
74 if (child.nodeType != Node.DOCUMENT_TYPE_NODE) | |
75 sourceXML.appendChild(child); | |
76 } | |
77 document.appendChild(html); | |
78 | |
79 var header = createHTMLElement('div'); | |
80 body.appendChild(header); | |
81 header.classList.add('header'); | |
82 var headerSpan = createHTMLElement('span'); | |
83 header.appendChild(headerSpan); | |
84 headerSpan.textContent = noStyleMessage; | |
85 header.appendChild(createHTMLElement('br')); | |
86 | |
87 tree = createHTMLElement('div'); | |
88 body.appendChild(tree); | |
89 tree.classList.add('pretty-print'); | |
90 window.onload = sourceXMLLoaded; | |
91 } | |
92 | |
93 function sourceXMLLoaded() | |
94 { | |
95 var sourceXML = document.getElementById('webkit-xml-viewer-source-xml'); | |
96 if (!sourceXML) | |
97 return; // Stop if some XML tree extension is already processing thi s document | |
98 | |
99 for (var child = sourceXML.firstChild; child; child = child.nextSibling) | |
100 nodeParentPairs.push({parentElement: tree, node: child}); | |
101 | |
102 for (var i = 0; i < nodeParentPairs.length; i++) | |
103 processNode(nodeParentPairs[i].parentElement, nodeParentPairs[i].nod e); | |
104 | |
105 drawArrows(); | |
106 initButtons(); | |
107 | |
108 if (typeof(onAfterWebkitXMLViewerLoaded) == 'function') | |
109 onAfterWebkitXMLViewerLoaded(); | |
110 } | |
111 | |
112 // Tree processing. | |
113 | |
114 function processNode(parentElement, node) | |
115 { | |
116 if (!processNode.processorsMap) { | |
117 processNode.processorsMap = {}; | |
118 processNode.processorsMap[Node.PROCESSING_INSTRUCTION_NODE] = proces sProcessingInstruction; | |
119 processNode.processorsMap[Node.ELEMENT_NODE] = processElement; | |
120 processNode.processorsMap[Node.COMMENT_NODE] = processComment; | |
121 processNode.processorsMap[Node.TEXT_NODE] = processText; | |
122 processNode.processorsMap[Node.CDATA_SECTION_NODE] = processCDATA; | |
123 } | |
124 if (processNode.processorsMap[node.nodeType]) | |
125 processNode.processorsMap[node.nodeType].call(this, parentElement, n ode); | |
126 } | |
127 | |
128 function processElement(parentElement, node) | |
129 { | |
130 if (!node.firstChild) | |
131 processEmptyElement(parentElement, node); | |
132 else { | |
133 var child = node.firstChild; | |
134 if (child.nodeType == Node.TEXT_NODE && isShort(child.nodeValue) && !child.nextSibling) | |
135 processShortTextOnlyElement(parentElement, node); | |
136 else | |
137 processComplexElement(parentElement, node); | |
138 } | |
139 } | |
140 | |
141 function processEmptyElement(parentElement, node) | |
142 { | |
143 var line = createLine(); | |
144 line.appendChild(createTag(node, false, true)); | |
145 parentElement.appendChild(line); | |
146 } | |
147 | |
148 function processShortTextOnlyElement(parentElement, node) | |
149 { | |
150 var line = createLine(); | |
151 line.appendChild(createTag(node, false, false)); | |
152 for (var child = node.firstChild; child; child = child.nextSibling) | |
153 line.appendChild(createText(child.nodeValue)); | |
154 line.appendChild(createTag(node, true, false)); | |
155 parentElement.appendChild(line); | |
156 } | |
157 | |
158 function processComplexElement(parentElement, node) | |
159 { | |
160 var collapsible = createCollapsible(); | |
161 | |
162 collapsible.expanded.start.appendChild(createTag(node, false, false)); | |
163 for (var child = node.firstChild; child; child = child.nextSibling) | |
164 nodeParentPairs.push({parentElement: collapsible.expanded.content, n ode: child}); | |
165 collapsible.expanded.end.appendChild(createTag(node, true, false)); | |
166 | |
167 collapsible.collapsed.content.appendChild(createTag(node, false, false)) ; | |
168 collapsible.collapsed.content.appendChild(createText('...')); | |
169 collapsible.collapsed.content.appendChild(createTag(node, true, false)); | |
170 parentElement.appendChild(collapsible); | |
171 } | |
172 | |
173 function processComment(parentElement, node) | |
174 { | |
175 if (isShort(node.nodeValue)) { | |
176 var line = createLine(); | |
177 line.appendChild(createComment('<!-- ' + node.nodeValue + ' -->')); | |
178 parentElement.appendChild(line); | |
179 } else { | |
180 var collapsible = createCollapsible(); | |
181 | |
182 collapsible.expanded.start.appendChild(createComment('<!--')); | |
183 collapsible.expanded.content.appendChild(createComment(node.nodeValu e)); | |
184 collapsible.expanded.end.appendChild(createComment('-->')); | |
185 | |
186 collapsible.collapsed.content.appendChild(createComment('<!--')); | |
187 collapsible.collapsed.content.appendChild(createComment('...')); | |
188 collapsible.collapsed.content.appendChild(createComment('-->')); | |
189 parentElement.appendChild(collapsible); | |
190 } | |
191 } | |
192 | |
193 function processCDATA(parentElement, node) | |
194 { | |
195 if (isShort(node.nodeValue)) { | |
196 var line = createLine(); | |
197 line.appendChild(createText('<![CDATA[ ' + node.nodeValue + ' ]]>')) ; | |
198 parentElement.appendChild(line); | |
199 } else { | |
200 var collapsible = createCollapsible(); | |
201 | |
202 collapsible.expanded.start.appendChild(createText('<![CDATA[')); | |
203 collapsible.expanded.content.appendChild(createText(node.nodeValue)) ; | |
204 collapsible.expanded.end.appendChild(createText(']]>')); | |
205 | |
206 collapsible.collapsed.content.appendChild(createText('<![CDATA[')); | |
207 collapsible.collapsed.content.appendChild(createText('...')); | |
208 collapsible.collapsed.content.appendChild(createText(']]>')); | |
209 parentElement.appendChild(collapsible); | |
210 } | |
211 } | |
212 | |
213 function processProcessingInstruction(parentElement, node) | |
214 { | |
215 if (isShort(node.nodeValue)) { | |
216 var line = createLine(); | |
217 line.appendChild(createComment('<?' + node.nodeName + ' ' + node.nod eValue + '?>')); | |
218 parentElement.appendChild(line); | |
219 } else { | |
220 var collapsible = createCollapsible(); | |
221 | |
222 collapsible.expanded.start.appendChild(createComment('<?' + node.nod eName)); | |
223 collapsible.expanded.content.appendChild(createComment(node.nodeValu e)); | |
224 collapsible.expanded.end.appendChild(createComment('?>')); | |
225 | |
226 collapsible.collapsed.content.appendChild(createComment('<?' + node. nodeName)); | |
227 collapsible.collapsed.content.appendChild(createComment('...')); | |
228 collapsible.collapsed.content.appendChild(createComment('?>')); | |
229 parentElement.appendChild(collapsible); | |
230 } | |
231 } | |
232 | |
233 function processText(parentElement, node) | |
234 { | |
235 parentElement.appendChild(createText(node.nodeValue)); | |
236 } | |
237 | |
238 // Processing utils. | |
239 | |
240 function trim(value) | |
241 { | |
242 return value.replace(/^\s\s*/, '').replace(/\s\s*$/, ''); | |
243 } | |
244 | |
245 function isShort(value) | |
246 { | |
247 return trim(value).length <= 50; | |
248 } | |
249 | |
250 // Tree rendering. | |
251 | |
252 function createHTMLElement(elementName) | |
253 { | |
254 return document.createElementNS('http://www.w3.org/1999/xhtml', elementN ame) | |
255 } | |
256 | |
257 function createCollapsible() | |
258 { | |
259 var collapsible = createHTMLElement('div'); | |
260 collapsible.classList.add('collapsible'); | |
261 collapsible.expanded = createHTMLElement('div'); | |
262 collapsible.expanded.classList.add('expanded'); | |
263 collapsible.appendChild(collapsible.expanded); | |
264 | |
265 collapsible.expanded.start = createLine(); | |
266 collapsible.expanded.start.appendChild(createCollapseButton()); | |
267 collapsible.expanded.appendChild(collapsible.expanded.start); | |
268 | |
269 collapsible.expanded.content = createHTMLElement('div'); | |
270 collapsible.expanded.content.classList.add('collapsible-content'); | |
271 collapsible.expanded.appendChild(collapsible.expanded.content); | |
272 | |
273 collapsible.expanded.end = createLine(); | |
274 collapsible.expanded.appendChild(collapsible.expanded.end); | |
275 | |
276 collapsible.collapsed = createHTMLElement('div'); | |
277 collapsible.collapsed.classList.add('collapsed'); | |
278 collapsible.collapsed.classList.add('hidden'); | |
279 collapsible.appendChild(collapsible.collapsed); | |
280 collapsible.collapsed.content = createLine(); | |
281 collapsible.collapsed.content.appendChild(createExpandButton()); | |
282 collapsible.collapsed.appendChild(collapsible.collapsed.content); | |
283 | |
284 return collapsible; | |
285 } | |
286 | |
287 function createButton() | |
288 { | |
289 var button = createHTMLElement('span'); | |
290 button.classList.add('button'); | |
291 return button; | |
292 } | |
293 | |
294 function createCollapseButton(str) | |
295 { | |
296 var button = createButton(); | |
297 button.classList.add('collapse-button'); | |
298 return button; | |
299 } | |
300 | |
301 function createExpandButton(str) | |
302 { | |
303 var button = createButton(); | |
304 button.classList.add('expand-button'); | |
305 return button; | |
306 } | |
307 | |
308 function createComment(commentString) | |
309 { | |
310 var comment = createHTMLElement('span'); | |
311 comment.classList.add('comment'); | |
312 comment.classList.add('webkit-html-comment'); | |
313 comment.textContent = commentString; | |
314 return comment; | |
315 } | |
316 | |
317 function createText(value) | |
318 { | |
319 var text = createHTMLElement('span'); | |
320 text.textContent = trim(value); | |
321 text.classList.add('text'); | |
322 return text; | |
323 } | |
324 | |
325 function createLine() | |
326 { | |
327 var line = createHTMLElement('div'); | |
328 line.classList.add('line'); | |
329 return line; | |
330 } | |
331 | |
332 function createTag(node, isClosing, isEmpty) | |
333 { | |
334 var tag = createHTMLElement('span'); | |
335 tag.classList.add('webkit-html-tag'); | |
336 | |
337 var stringBeforeAttrs = '<'; | |
338 if (isClosing) | |
339 stringBeforeAttrs += '/'; | |
340 stringBeforeAttrs += node.nodeName; | |
341 var textBeforeAttrs = document.createTextNode(stringBeforeAttrs); | |
342 tag.appendChild(textBeforeAttrs); | |
343 | |
344 if (!isClosing) { | |
345 for (var i = 0; i < node.attributes.length; i++) | |
346 tag.appendChild(createAttribute(node.attributes[i])); | |
347 } | |
348 | |
349 var stringAfterAttrs = ''; | |
350 if (isEmpty) | |
351 stringAfterAttrs += '/'; | |
352 stringAfterAttrs += '>'; | |
353 var textAfterAttrs = document.createTextNode(stringAfterAttrs); | |
354 tag.appendChild(textAfterAttrs); | |
355 | |
356 return tag; | |
357 } | |
358 | |
359 function createAttribute(attributeNode) | |
360 { | |
361 var attribute = createHTMLElement('span'); | |
362 attribute.classList.add('webkit-html-attribute'); | |
363 | |
364 var attributeName = createHTMLElement('span'); | |
365 attributeName.classList.add('webkit-html-attribute-name'); | |
366 attributeName.textContent = attributeNode.name; | |
367 | |
368 var textBefore = document.createTextNode(' '); | |
369 var textBetween = document.createTextNode('="'); | |
370 | |
371 var attributeValue = createHTMLElement('span'); | |
372 attributeValue.classList.add('webkit-html-attribute-value'); | |
373 attributeValue.textContent = attributeNode.value; | |
374 | |
375 var textAfter = document.createTextNode('"'); | |
376 | |
377 attribute.appendChild(textBefore); | |
378 attribute.appendChild(attributeName); | |
379 attribute.appendChild(textBetween); | |
380 attribute.appendChild(attributeValue); | |
381 attribute.appendChild(textAfter); | |
382 return attribute; | |
383 } | |
384 | |
385 // Tree behaviour. | |
386 | |
387 function drawArrows() | |
388 { | |
389 var ctx = document.getCSSCanvasContext("2d", "arrowRight", 10, 11); | |
390 | |
391 ctx.fillStyle = "rgb(90,90,90)"; | |
392 ctx.beginPath(); | |
393 ctx.moveTo(0, 0); | |
394 ctx.lineTo(0, 8); | |
395 ctx.lineTo(7, 4); | |
396 ctx.lineTo(0, 0); | |
397 ctx.fill(); | |
398 ctx.closePath(); | |
399 | |
400 var ctx = document.getCSSCanvasContext("2d", "arrowDown", 10, 10); | |
401 | |
402 ctx.fillStyle = "rgb(90,90,90)"; | |
403 ctx.beginPath(); | |
404 ctx.moveTo(0, 0); | |
405 ctx.lineTo(8, 0); | |
406 ctx.lineTo(4, 7); | |
407 ctx.lineTo(0, 0); | |
408 ctx.fill(); | |
409 ctx.closePath(); | |
410 } | |
411 | |
412 function expandFunction(sectionId) | |
413 { | |
414 return function() | |
415 { | |
416 document.querySelector('#' + sectionId + ' > .expanded').className = 'expanded'; | |
417 document.querySelector('#' + sectionId + ' > .collapsed').className = 'collapsed hidden'; | |
418 }; | |
419 } | |
420 | |
421 function collapseFunction(sectionId) | |
422 { | |
423 return function() | |
424 { | |
425 document.querySelector('#' + sectionId + ' > .expanded').className = 'expanded hidden'; | |
426 document.querySelector('#' + sectionId + ' > .collapsed').className = 'collapsed'; | |
427 }; | |
428 } | |
429 | |
430 function initButtons() | |
431 { | |
432 var sections = document.querySelectorAll('.collapsible'); | |
433 for (var i = 0; i < sections.length; i++) { | |
434 var sectionId = 'collapsible' + i; | |
435 sections[i].id = sectionId; | |
436 | |
437 var expandedPart = sections[i].querySelector('#' + sectionId + ' > . expanded'); | |
438 var collapseButton = expandedPart.querySelector('.collapse-button'); | |
439 collapseButton.onclick = collapseFunction(sectionId); | |
440 collapseButton.onmousedown = handleButtonMouseDown; | |
441 | |
442 var collapsedPart = sections[i].querySelector('#' + sectionId + ' > .collapsed'); | |
443 var expandButton = collapsedPart.querySelector('.expand-button'); | |
444 expandButton.onclick = expandFunction(sectionId); | |
445 expandButton.onmousedown = handleButtonMouseDown; | |
446 } | |
447 | |
448 } | |
449 | |
450 function handleButtonMouseDown(e) | |
451 { | |
452 // To prevent selection on double click | |
453 e.preventDefault(); | |
454 } | |
455 | |
456 DocumentPrototype.transformDocumentToTreeView = function() { | |
457 prepareWebKitXMLViewer("This XML file does not appear to have any style information associated with it. The document tree is shown below."); | |
458 } | |
459 }); | |
460 | |
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