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