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// 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"), require("../fold/xml-fold"));
else if (typeof define == "function" && define.amd) // AMD
define(["../../lib/codemirror", "../fold/xml-fold"], mod);
else // Plain browser env
mod(CodeMirror);
})(function(CodeMirror) {
"use strict";
CodeMirror.defineOption("matchTags", false, function(cm, val, old) {
if (old && old != CodeMirror.Init) {
cm.off("cursorActivity", doMatchTags);
cm.off("viewportChange", maybeUpdateMatch);
clear(cm);
}
if (val) {
cm.state.matchBothTags = typeof val == "object" && val.bothTags;
cm.on("cursorActivity", doMatchTags);
cm.on("viewportChange", maybeUpdateMatch);
doMatchTags(cm);
}
});
function clear(cm) {
if (cm.state.tagHit) cm.state.tagHit.clear();
if (cm.state.tagOther) cm.state.tagOther.clear();
cm.state.tagHit = cm.state.tagOther = null;
}
function doMatchTags(cm) {
cm.state.failedTagMatch = false;
cm.operation(function() {
clear(cm);
if (cm.somethingSelected()) return;
var cur = cm.getCursor(), range = cm.getViewport();
range.from = Math.min(range.from, cur.line); range.to = Math.max(cur.line + 1, range.to);
var match = CodeMirror.findMatchingTag(cm, cur, range);
if (!match) return;
if (cm.state.matchBothTags) {
var hit = match.at == "open" ? match.open : match.close;
if (hit) cm.state.tagHit = cm.markText(hit.from, hit.to, {className: "CodeMirror-matchingtag"});
}
var other = match.at == "close" ? match.open : match.close;
if (other)
cm.state.tagOther = cm.markText(other.from, other.to, {className: "CodeMirror-matchingtag"});
else
cm.state.failedTagMatch = true;
});
}
function maybeUpdateMatch(cm) {
if (cm.state.failedTagMatch) doMatchTags(cm);
}
CodeMirror.commands.toMatchingTag = function(cm) {
var found = CodeMirror.findMatchingTag(cm, cm.getCursor());
if (found) {
var other = found.at == "close" ? found.open : found.close;
if (other) cm.extendSelection(other.to, other.from);
}
};
});
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