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indent-fold.js
49 lines
| 1 | // CodeMirror, copyright (c) by Marijn Haverbeke and others |
| 2 | // Distributed under an MIT license: http://codemirror.net/LICENSE |
| 3 | |
| 4 | (function(mod) { |
| 5 | if (typeof exports == "object" && typeof module == "object") // CommonJS |
| 6 | mod(require("../../lib/codemirror")); |
| 7 | else if (typeof define == "function" && define.amd) // AMD |
| 8 | define(["../../lib/codemirror"], mod); |
| 9 | else // Plain browser env |
| 10 | mod(CodeMirror); |
| 11 | })(function(CodeMirror) { |
| 12 | "use strict"; |
| 13 | |
| 14 | function lineIndent(cm, lineNo) { |
| 15 | var text = cm.getLine(lineNo) |
| 16 | var spaceTo = text.search(/\S/) |
| 17 | if (spaceTo == -1 || /\bcomment\b/.test(cm.getTokenTypeAt(CodeMirror.Pos(lineNo, spaceTo + 1)))) |
| 18 | return -1 |
| 19 | return CodeMirror.countColumn(text, null, cm.getOption("tabSize")) |
| 20 | } |
| 21 | ! |
| 22 | CodeMirror.registerHelper("fold", "indent", function(cm, start) { |
| 23 | var myIndent = lineIndent(cm, start.line) |
| 24 | if (myIndent < 0) return |
| 25 | var lastLineInFold = null |
| 26 | |
| 27 | // Go through lines until we find a line that definitely doesn't belong in |
| 28 | // the block we're folding, or to the end. |
| 29 | for (var i = start.line + 1, end = cm.lastLine(); i <= end; ++i) { |
| 30 | var indent = lineIndent(cm, i) |
| 31 | if (indent == -1) { |
| 32 | } else if (indent > myIndent) { |
| 33 | // Lines with a greater indent are considered part of the block. |
| 34 | lastLineInFold = i; |
| 35 | } else { |
| 36 | // If this line has non-space, non-comment content, and is |
| 37 | // indented less or equal to the start line, it is the start of |
| 38 | // another block. |
| 39 | break; |
| 40 | } |
| 41 | } |
| 42 | if (lastLineInFold) return { |
| 43 | from: CodeMirror.Pos(start.line, cm.getLine(start.line).length), |
| 44 | to: CodeMirror.Pos(lastLineInFold, cm.getLine(lastLineInFold).length) |
| 45 | }; |
| 46 | }); |
| 47 | |
| 48 | }); |
| 49 |