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// CodeMirror, copyright (c) by Marijn Haverbeke and others // Distributed under an MIT license: https://codemirror.net/LICENSE /** * Tag-closer extension for CodeMirror. * * This extension adds an "autoCloseTags" option that can be set to * either true to get the default behavior, or an object to further * configure its behavior. * * These are supported options: * * `whenClosing` (default true) * Whether to autoclose when the '/' of a closing tag is typed. * `whenOpening` (default true) * Whether to autoclose the tag when the final '>' of an opening * tag is typed. * `dontCloseTags` (default is empty tags for HTML, none for XML) * An array of tag names that should not be autoclosed. * `indentTags` (default is block tags for HTML, none for XML) * An array of tag names that should, when opened, cause a * blank line to be added inside the tag, and the blank line and * closing line to be indented. * `emptyTags` (default is none) * An array of XML tag names that should be autoclosed with '/>'. * * See demos/closetag.html for a usage example. */ (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) { CodeMirror.defineOption("autoCloseTags", false, function(cm, val, old) { if (old != CodeMirror.Init && old) cm.removeKeyMap("autoCloseTags"); if (!val) return; var map = {name: "autoCloseTags"}; if (typeof val != "object" || val.whenClosing !== false) map["'/'"] = function(cm) { return autoCloseSlash(cm); }; if (typeof val != "object" || val.whenOpening !== false) map["'>'"] = function(cm) { return autoCloseGT(cm); }; cm.addKeyMap(map); }); var htmlDontClose = ["area", "base", "br", "col", "command", "embed", "hr", "img", "input", "keygen", "link", "meta", "param", "source", "track", "wbr"]; var htmlIndent = ["applet", "blockquote", "body", "button", "div", "dl", "fieldset", "form", "frameset", "h1", "h2", "h3", "h4", "h5", "h6", "head", "html", "iframe", "layer", "legend", "object", "ol", "p", "select", "table", "ul"]; function autoCloseGT(cm) { if (cm.getOption("disableInput")) return CodeMirror.Pass; var ranges = cm.listSelections(), replacements = []; var opt = cm.getOption("autoCloseTags"); for (var i = 0; i < ranges.length; i++) { if (!ranges[i].empty()) return CodeMirror.Pass; var pos = ranges[i].head, tok = cm.getTokenAt(pos); var inner = CodeMirror.innerMode(cm.getMode(), tok.state), state = inner.state; var tagInfo = inner.mode.xmlCurrentTag && inner.mode.xmlCurrentTag(state) var tagName = tagInfo && tagInfo.name if (!tagName) return CodeMirror.Pass var html = inner.mode.configuration == "html"; var dontCloseTags = (typeof opt == "object" && opt.dontCloseTags) || (html && htmlDontClose); var indentTags = (typeof opt == "object" && opt.indentTags) || (html && htmlIndent); if (tok.end > pos.ch) tagName = tagName.slice(0, tagName.length - tok.end + pos.ch); var lowerTagName = tagName.toLowerCase(); // Don't process the '>' at the end of an end-tag or self-closing tag if (!tagName || tok.type == "string" && (tok.end != pos.ch || !/[\"\']/.test(tok.string.charAt(tok.string.length - 1)) || tok.string.length == 1) || tok.type == "tag" && tagInfo.close || tok.string.indexOf("/") == (pos.ch - tok.start - 1) || // match something like
dontCloseTags && indexOf(dontCloseTags, lowerTagName) > -1 || closingTagExists(cm, inner.mode.xmlCurrentContext && inner.mode.xmlCurrentContext(state) || [], tagName, pos, true)) return CodeMirror.Pass; var emptyTags = typeof opt == "object" && opt.emptyTags; if (emptyTags && indexOf(emptyTags, tagName) > -1) { replacements[i] = { text: "/>", newPos: CodeMirror.Pos(pos.line, pos.ch + 2) }; continue; } var indent = indentTags && indexOf(indentTags, lowerTagName) > -1; replacements[i] = {indent: indent, text: ">" + (indent ? "\n\n" : "") + "" + tagName + ">", newPos: indent ? CodeMirror.Pos(pos.line + 1, 0) : CodeMirror.Pos(pos.line, pos.ch + 1)}; } var dontIndentOnAutoClose = (typeof opt == "object" && opt.dontIndentOnAutoClose); for (var i = ranges.length - 1; i >= 0; i--) { var info = replacements[i]; cm.replaceRange(info.text, ranges[i].head, ranges[i].anchor, "+insert"); var sel = cm.listSelections().slice(0); sel[i] = {head: info.newPos, anchor: info.newPos}; cm.setSelections(sel); if (!dontIndentOnAutoClose && info.indent) { cm.indentLine(info.newPos.line, null, true); cm.indentLine(info.newPos.line + 1, null, true); } } } function autoCloseCurrent(cm, typingSlash) { var ranges = cm.listSelections(), replacements = []; var head = typingSlash ? "/" : ""; var opt = cm.getOption("autoCloseTags"); var dontIndentOnAutoClose = (typeof opt == "object" && opt.dontIndentOnSlash); for (var i = 0; i < ranges.length; i++) { if (!ranges[i].empty()) return CodeMirror.Pass; var pos = ranges[i].head, tok = cm.getTokenAt(pos); var inner = CodeMirror.innerMode(cm.getMode(), tok.state), state = inner.state; if (typingSlash && (tok.type == "string" || tok.string.charAt(0) != "<" || tok.start != pos.ch - 1)) return CodeMirror.Pass; // Kludge to get around the fact that we are not in XML mode // when completing in JS/CSS snippet in htmlmixed mode. Does not // work for other XML embedded languages (there is no general // way to go from a mixed mode to its current XML state). var replacement, mixed = inner.mode.name != "xml" && cm.getMode().name == "htmlmixed" if (mixed && inner.mode.name == "javascript") { replacement = head + "script"; } else if (mixed && inner.mode.name == "css") { replacement = head + "style"; } else { var context = inner.mode.xmlCurrentContext && inner.mode.xmlCurrentContext(state) var top = context.length ? context[context.length - 1] : "" if (!context || (context.length && closingTagExists(cm, context, top, pos))) return CodeMirror.Pass; replacement = head + top } if (cm.getLine(pos.line).charAt(tok.end) != ">") replacement += ">"; replacements[i] = replacement; } cm.replaceSelections(replacements); ranges = cm.listSelections(); if (!dontIndentOnAutoClose) { for (var i = 0; i < ranges.length; i++) if (i == ranges.length - 1 || ranges[i].head.line < ranges[i + 1].head.line) cm.indentLine(ranges[i].head.line); } } function autoCloseSlash(cm) { if (cm.getOption("disableInput")) return CodeMirror.Pass; return autoCloseCurrent(cm, true); } CodeMirror.commands.closeTag = function(cm) { return autoCloseCurrent(cm); }; function indexOf(collection, elt) { if (collection.indexOf) return collection.indexOf(elt); for (var i = 0, e = collection.length; i < e; ++i) if (collection[i] == elt) return i; return -1; } // If xml-fold is loaded, we use its functionality to try and verify // whether a given tag is actually unclosed. function closingTagExists(cm, context, tagName, pos, newTag) { if (!CodeMirror.scanForClosingTag) return false; var end = Math.min(cm.lastLine() + 1, pos.line + 500); var nextClose = CodeMirror.scanForClosingTag(cm, pos, null, end); if (!nextClose || nextClose.tag != tagName) return false; // If the immediate wrapping context contains onCx instances of // the same tag, a closing tag only exists if there are at least // that many closing tags of that type following. var onCx = newTag ? 1 : 0 for (var i = context.length - 1; i >= 0; i--) { if (context[i] == tagName) ++onCx else break } pos = nextClose.to; for (var i = 1; i < onCx; i++) { var next = CodeMirror.scanForClosingTag(cm, pos, null, end); if (!next || next.tag != tagName) return false; pos = next.to; } return true; } });