47 lines
2 KiB
JavaScript
47 lines
2 KiB
JavaScript
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const wrapSymbols = ['*', '_', '~', '^', '+', '='];
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export function wrapTextWith(editor, cm, symbol) {
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if (!cm.getSelection()) {
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return CodeMirror.Pass;
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} else {
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var ranges = cm.listSelections();
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for (var i = 0; i < ranges.length; i++) {
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var range = ranges[i];
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if (!range.empty()) {
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var from = range.from(), to = range.to();
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if (symbol !== 'Backspace') {
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cm.replaceRange(symbol, to, to, '+input');
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cm.replaceRange(symbol, from, from, '+input');
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// workaround selection range not correct after add symbol
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var _ranges = cm.listSelections();
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var anchorIndex = editor.indexFromPos(_ranges[i].anchor);
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var headIndex = editor.indexFromPos(_ranges[i].head);
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if (anchorIndex > headIndex) {
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_ranges[i].anchor.ch--;
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} else {
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_ranges[i].head.ch--;
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}
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cm.setSelections(_ranges);
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} else {
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var preEndPos = {
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line: to.line,
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ch: to.ch + 1
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};
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var preText = cm.getRange(to, preEndPos);
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var preIndex = wrapSymbols.indexOf(preText);
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var postEndPos = {
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line: from.line,
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ch: from.ch - 1
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};
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var postText = cm.getRange(postEndPos, from);
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var postIndex = wrapSymbols.indexOf(postText);
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// check if surround symbol are list in array and matched
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if (preIndex > -1 && postIndex > -1 && preIndex === postIndex) {
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cm.replaceRange("", to, preEndPos, '+delete');
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cm.replaceRange("", postEndPos, from, '+delete');
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}
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}
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}
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}
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}
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}
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