diff options
Diffstat (limited to 'devtools/client/sourceeditor/codemirror/addon/fold/indent-fold.js')
-rw-r--r-- | devtools/client/sourceeditor/codemirror/addon/fold/indent-fold.js | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/devtools/client/sourceeditor/codemirror/addon/fold/indent-fold.js b/devtools/client/sourceeditor/codemirror/addon/fold/indent-fold.js new file mode 100644 index 000000000..e29f15e9d --- /dev/null +++ b/devtools/client/sourceeditor/codemirror/addon/fold/indent-fold.js @@ -0,0 +1,44 @@ +// CodeMirror, copyright (c) by Marijn Haverbeke and others +// Distributed under an MIT license: http://codemirror.net/LICENSE + +(function(mod) { + if (typeof exports == "object" && typeof module == "object") // CommonJS + mod(require("../../lib/codemirror")); + else if (typeof define == "function" && define.amd) // AMD + define(["../../lib/codemirror"], mod); + else // Plain browser env + mod(CodeMirror); +})(function(CodeMirror) { +"use strict"; + +CodeMirror.registerHelper("fold", "indent", function(cm, start) { + var tabSize = cm.getOption("tabSize"), firstLine = cm.getLine(start.line); + if (!/\S/.test(firstLine)) return; + var getIndent = function(line) { + return CodeMirror.countColumn(line, null, tabSize); + }; + var myIndent = getIndent(firstLine); + var lastLineInFold = null; + // Go through lines until we find a line that definitely doesn't belong in + // the block we're folding, or to the end. + for (var i = start.line + 1, end = cm.lastLine(); i <= end; ++i) { + var curLine = cm.getLine(i); + var curIndent = getIndent(curLine); + if (curIndent > myIndent) { + // Lines with a greater indent are considered part of the block. + lastLineInFold = i; + } else if (!/\S/.test(curLine)) { + // Empty lines might be breaks within the block we're trying to fold. + } else { + // A non-empty line at an indent equal to or less than ours marks the + // start of another block. + break; + } + } + if (lastLineInFold) return { + from: CodeMirror.Pos(start.line, firstLine.length), + to: CodeMirror.Pos(lastLineInFold, cm.getLine(lastLineInFold).length) + }; +}); + +}); |