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| 1 <!-- | |
| 2 // Copyright 2015 The Chromium Authors. All rights reserved. | |
| 3 // Use of this source code is governed by a BSD-style license that can be | |
| 4 // found in the LICENSE file. | |
| 5 --> | |
| 6 <script> | |
| 7 import "dart:sky"; | |
| 8 | |
| 9 final kEntityMap = new Map.fromIterable([ | |
| 10 ['\u00a0', ' '], | |
| 11 ['&', '&'], | |
| 12 ['<', '<'], | |
| 13 ['>', '>'], | |
| 14 ['"', '"'], | |
| 15 ], key: (item) => item[0], value: (item) => item[1]); | |
| 16 | |
| 17 final RegExp kTextEscapePattern = new RegExp(r'&|<|>|"|\u00a0'); | |
| 18 final RegExp kAttributeEscapePattern = new RegExp(r'&|>|"|\u00a0'); | |
| 19 const kIndent = ' '; | |
| 20 | |
| 21 String escapeText(String value, RegExp pattern) { | |
| 22 if (value == null) | |
| 23 value = ''; | |
| 24 return value.replaceAllMapped(pattern, (Match match) { | |
| 25 return kEntityMap[match[0]]; | |
| 26 }); | |
| 27 } | |
| 28 | |
| 29 String serializeAttributes(Element element) { | |
| 30 String buffer = ''; | |
| 31 var attributes = element.getAttributes(); | |
| 32 | |
| 33 for (var i = 0; i < attributes.length; ++i) { | |
| 34 var attribute = attributes[i]; | |
| 35 buffer += ' '; | |
| 36 buffer += attribute.name; | |
| 37 buffer += '="'; | |
| 38 buffer += escapeText(attribute.value, kAttributeEscapePattern); | |
| 39 buffer += '"'; | |
| 40 } | |
| 41 | |
| 42 return buffer; | |
| 43 } | |
| 44 | |
| 45 Node getFirstChild(Node node) { | |
| 46 if (node is HTMLTemplateElement) | |
| 47 return node.content.firstChild; | |
| 48 return node.firstChild; | |
| 49 } | |
| 50 | |
| 51 Node getLastChild(Node node) { | |
| 52 if (node is HTMLTemplateElement) | |
| 53 return node.content.lastChild; | |
| 54 return node.lastChild; | |
| 55 } | |
| 56 | |
| 57 String serializeChildren(Node node, int depth) { | |
| 58 String buffer = ''; | |
| 59 Node firstChild = getFirstChild(node); | |
| 60 Node lastChild = getLastChild(node); | |
| 61 if (firstChild is Element && depth != 0) | |
| 62 buffer += '\n' + (kIndent * depth); | |
| 63 for (Node child = firstChild; child != null; child = child.nextSibling) { | |
| 64 buffer += serializeNode(child, depth); | |
| 65 if (child is Element && child.nextSibling is Element) | |
| 66 buffer += '\n' + (kIndent * depth); | |
| 67 } | |
| 68 if (lastChild is Element) { | |
| 69 buffer += '\n'; | |
| 70 if (depth != 0) | |
| 71 buffer += kIndent * (depth - 1); | |
| 72 } | |
| 73 return buffer; | |
| 74 } | |
| 75 | |
| 76 String serializeElement(Element element, int depth) { | |
| 77 String buffer = '<' + element.tagName + serializeAttributes(element) + '>'; | |
| 78 buffer += serializeChildren(element, depth + 1); | |
| 79 buffer += '</' + element.tagName + '>'; | |
| 80 return buffer; | |
| 81 } | |
| 82 | |
| 83 String serializeText(Node node) { | |
| 84 Node parent = node.parentNode; | |
| 85 if (parent != null && (parent is HTMLScriptElement || parent is HTMLStyleEleme
nt)) | |
| 86 return node.data; | |
| 87 return escapeText(node.data, kTextEscapePattern); | |
| 88 } | |
| 89 | |
| 90 String serializeNode(Node node, [int depth = 0]) { | |
| 91 if (node is Text) | |
| 92 return serializeText(node); | |
| 93 if (node is Element) | |
| 94 return serializeElement(node, depth); | |
| 95 if (node is Document || node is ShadowRoot) | |
| 96 return serializeChildren(node, depth); | |
| 97 throw new Error('Cannot serialize node'); | |
| 98 } | |
| 99 </script> | |
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Chromium Code Reviews
Issue 980423002:
Organize sky/framework a bit (Closed)
Base URL: git@github.com:domokit/mojo.git@master