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57 lines
1.8 KiB
JavaScript
57 lines
1.8 KiB
JavaScript
7 years ago
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(function() {
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"use strict";
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CodeMirror.defineOption("matchTags", false, function(cm, val, old) {
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if (old && old != CodeMirror.Init) {
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cm.off("cursorActivity", doMatchTags);
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cm.off("viewportChange", maybeUpdateMatch);
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clear(cm);
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}
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if (val) {
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cm.state.matchBothTags = typeof val == "object" && val.bothTags;
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cm.on("cursorActivity", doMatchTags);
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cm.on("viewportChange", maybeUpdateMatch);
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doMatchTags(cm);
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}
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});
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function clear(cm) {
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if (cm.state.tagHit) cm.state.tagHit.clear();
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if (cm.state.tagOther) cm.state.tagOther.clear();
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cm.state.tagHit = cm.state.tagOther = null;
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}
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function doMatchTags(cm) {
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cm.state.failedTagMatch = false;
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cm.operation(function() {
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clear(cm);
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if (cm.somethingSelected()) return;
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var cur = cm.getCursor(), range = cm.getViewport();
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range.from = Math.min(range.from, cur.line); range.to = Math.max(cur.line + 1, range.to);
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var match = CodeMirror.findMatchingTag(cm, cur, range);
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if (!match) return;
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if (cm.state.matchBothTags) {
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var hit = match.at == "open" ? match.open : match.close;
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if (hit) cm.state.tagHit = cm.markText(hit.from, hit.to, {className: "CodeMirror-matchingtag"});
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}
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var other = match.at == "close" ? match.open : match.close;
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if (other)
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cm.state.tagOther = cm.markText(other.from, other.to, {className: "CodeMirror-matchingtag"});
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else
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cm.state.failedTagMatch = true;
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});
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}
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function maybeUpdateMatch(cm) {
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if (cm.state.failedTagMatch) doMatchTags(cm);
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}
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CodeMirror.commands.toMatchingTag = function(cm) {
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var found = CodeMirror.findMatchingTag(cm, cm.getCursor());
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if (found) {
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var other = found.at == "close" ? found.open : found.close;
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if (other) cm.setSelection(other.to, other.from);
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}
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};
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})();
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