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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)
};
});
CodeMirror.indentRangeFinder = CodeMirror.fold.indent; // deprecated
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