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1/*
2 * Copyright (C) 2010 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31/**
32 * @constructor
33 */
34WebInspector.DOMSyntaxHighlighter = function(mimeType, stripExtraWhitespace)
35{
36    this._mimeType = mimeType;
37    this._stripExtraWhitespace = stripExtraWhitespace;
38}
39
40WebInspector.DOMSyntaxHighlighter.prototype = {
41    /**
42     * @param {string} content
43     * @param {string} className
44     * @return {!Element}
45     */
46    createSpan: function(content, className)
47    {
48        var span = document.createElement("span");
49        span.className = "cm-" + className;
50        if (this._stripExtraWhitespace && className !== "whitespace")
51            content = content.replace(/^[\n\r]*/, "").replace(/\s*$/, "");
52        span.appendChild(document.createTextNode(content));
53        return span;
54    },
55
56    syntaxHighlightNode: function(node)
57    {
58        var lines = node.textContent.split("\n");
59        node.removeChildren();
60
61        /**
62         * @param {string} token
63         * @param {?string} tokenType
64         * @param {number} column
65         * @param {number} newColumn
66         * @this {WebInspector.DOMSyntaxHighlighter}
67         */
68        function processToken(token, tokenType, column, newColumn)
69        {
70            if (!tokenType)
71                return;
72
73            if (column > plainTextStart) {
74                var plainText = line.substring(plainTextStart, column);
75                node.appendChild(document.createTextNode(plainText));
76            }
77            node.appendChild(this.createSpan(token, tokenType));
78            plainTextStart = newColumn;
79        }
80
81        var tokenize = WebInspector.moduleManager.instance(WebInspector.TokenizerFactory).createTokenizer(this._mimeType);
82        for (var i = lines[0].length ? 0 : 1; i < lines.length; ++i) {
83            var line = lines[i];
84            var plainTextStart = 0;
85            tokenize(line, processToken.bind(this));
86            if (plainTextStart < line.length) {
87                var plainText = line.substring(plainTextStart, line.length);
88                node.appendChild(document.createTextNode(plainText));
89            }
90            if (i < lines.length - 1)
91                node.appendChild(document.createElement("br"));
92        }
93    }
94}
95