META-INF.dirigible.dev-tools.ui.SyntaxHighlighter.js Maven / Gradle / Ivy
/*
* Copyright (C) 2010 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @unrestricted
*/
export class SyntaxHighlighter {
/**
* @param {string} mimeType
* @param {boolean} stripExtraWhitespace
*/
constructor(mimeType, stripExtraWhitespace) {
this._mimeType = mimeType;
this._stripExtraWhitespace = stripExtraWhitespace;
}
/**
* @param {string} content
* @param {string} className
* @return {!Element}
*/
createSpan(content, className) {
const span = createElement('span');
span.className = className.replace(/\S+/g, 'cm-$&');
if (this._stripExtraWhitespace && className !== 'whitespace') {
content = content.replace(/^[\n\r]*/, '').replace(/\s*$/, '');
}
span.createTextChild(content);
return span;
}
/**
* @param {!Element} node
* @return {!Promise.}
*/
syntaxHighlightNode(node) {
const lines = node.textContent.split('\n');
let plainTextStart;
let line;
return self.runtime.extension(TextUtils.TokenizerFactory).instance().then(processTokens.bind(this));
/**
* @param {!TextUtils.TokenizerFactory} tokenizerFactory
* @this {SyntaxHighlighter}
*/
function processTokens(tokenizerFactory) {
node.removeChildren();
const tokenize = tokenizerFactory.createTokenizer(this._mimeType);
for (let i = 0; i < lines.length; ++i) {
line = lines[i];
plainTextStart = 0;
tokenize(line, processToken.bind(this));
if (plainTextStart < line.length) {
const plainText = line.substring(plainTextStart, line.length);
node.createTextChild(plainText);
}
if (i < lines.length - 1) {
node.createTextChild('\n');
}
}
}
/**
* @param {string} token
* @param {?string} tokenType
* @param {number} column
* @param {number} newColumn
* @this {SyntaxHighlighter}
*/
function processToken(token, tokenType, column, newColumn) {
if (!tokenType) {
return;
}
if (column > plainTextStart) {
const plainText = line.substring(plainTextStart, column);
node.createTextChild(plainText);
}
node.appendChild(this.createSpan(token, tokenType));
plainTextStart = newColumn;
}
}
}