markdown.js 4.5 KB

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  1. /* ***** BEGIN LICENSE BLOCK *****
  2. * Distributed under the BSD license:
  3. *
  4. * Copyright (c) 2010, Ajax.org B.V.
  5. * All rights reserved.
  6. *
  7. * Redistribution and use in source and binary forms, with or without
  8. * modification, are permitted provided that the following conditions are met:
  9. * * Redistributions of source code must retain the above copyright
  10. * notice, this list of conditions and the following disclaimer.
  11. * * Redistributions in binary form must reproduce the above copyright
  12. * notice, this list of conditions and the following disclaimer in the
  13. * documentation and/or other materials provided with the distribution.
  14. * * Neither the name of Ajax.org B.V. nor the
  15. * names of its contributors may be used to endorse or promote products
  16. * derived from this software without specific prior written permission.
  17. *
  18. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  19. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  20. * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  21. * DISCLAIMED. IN NO EVENT SHALL AJAX.ORG B.V. BE LIABLE FOR ANY
  22. * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  23. * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  24. * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  25. * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  27. * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28. *
  29. * ***** END LICENSE BLOCK ***** */
  30. define(function(require, exports, module) {
  31. "use strict";
  32. var oop = require("../../lib/oop");
  33. var BaseFoldMode = require("./fold_mode").FoldMode;
  34. var Range = require("../../range").Range;
  35. var FoldMode = exports.FoldMode = function() {};
  36. oop.inherits(FoldMode, BaseFoldMode);
  37. (function() {
  38. this.foldingStartMarker = /^(?:[=-]+\s*$|#{1,6} |`{3})/;
  39. this.getFoldWidget = function(session, foldStyle, row) {
  40. var line = session.getLine(row);
  41. if (!this.foldingStartMarker.test(line))
  42. return "";
  43. if (line[0] == "`") {
  44. if (session.bgTokenizer.getState(row) == "start")
  45. return "end";
  46. return "start";
  47. }
  48. return "start";
  49. };
  50. this.getFoldWidgetRange = function(session, foldStyle, row) {
  51. var line = session.getLine(row);
  52. var startColumn = line.length;
  53. var maxRow = session.getLength();
  54. var startRow = row;
  55. var endRow = row;
  56. if (!line.match(this.foldingStartMarker))
  57. return;
  58. if (line[0] == "`") {
  59. if (session.bgTokenizer.getState(row) !== "start") {
  60. while (++row < maxRow) {
  61. line = session.getLine(row);
  62. if (line[0] == "`" & line.substring(0, 3) == "```")
  63. break;
  64. }
  65. return new Range(startRow, startColumn, row, 0);
  66. } else {
  67. while (row -- > 0) {
  68. line = session.getLine(row);
  69. if (line[0] == "`" & line.substring(0, 3) == "```")
  70. break;
  71. }
  72. return new Range(row, line.length, startRow, 0);
  73. }
  74. }
  75. var token;
  76. function isHeading(row) {
  77. token = session.getTokens(row)[0];
  78. return token && token.type.lastIndexOf(heading, 0) === 0;
  79. }
  80. var heading = "markup.heading";
  81. function getLevel() {
  82. var ch = token.value[0];
  83. if (ch == "=") return 6;
  84. if (ch == "-") return 5;
  85. return 7 - token.value.search(/[^#]/);
  86. }
  87. if (isHeading(row)) {
  88. var startHeadingLevel = getLevel();
  89. while (++row < maxRow) {
  90. if (!isHeading(row))
  91. continue;
  92. var level = getLevel();
  93. if (level >= startHeadingLevel)
  94. break;
  95. }
  96. endRow = row - (!token || ["=", "-"].indexOf(token.value[0]) == -1 ? 1 : 2);
  97. if (endRow > startRow) {
  98. while (endRow > startRow && /^\s*$/.test(session.getLine(endRow)))
  99. endRow--;
  100. }
  101. if (endRow > startRow) {
  102. var endColumn = session.getLine(endRow).length;
  103. return new Range(startRow, startColumn, endRow, endColumn);
  104. }
  105. }
  106. };
  107. }).call(FoldMode.prototype);
  108. });