xml-hint.js
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// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE
(function(mod) {
if (typeof exports == "object" && typeof module == "object") // CommonJS
mod(require("../../lib/codemirror"));
else if (typeof define == "function" && define.amd) // AMD
define(["../../lib/codemirror"], mod);
else // Plain browser env
mod(CodeMirror);
})(function(CodeMirror) {
"use strict";
var Pos = CodeMirror.Pos;
function matches(hint, typed, matchInMiddle) {
if (matchInMiddle) return hint.indexOf(typed) >= 0;
else return hint.lastIndexOf(typed, 0) == 0;
}
function getHints(cm, options) {
var tags = options && options.schemaInfo;
var quote = (options && options.quoteChar) || '"';
var matchInMiddle = options && options.matchInMiddle;
if (!tags) return;
var cur = cm.getCursor(), token = cm.getTokenAt(cur);
if (token.end > cur.ch) {
token.end = cur.ch;
token.string = token.string.slice(0, cur.ch - token.start);
}
var inner = CodeMirror.innerMode(cm.getMode(), token.state);
if (inner.mode.name != "xml") return;
var result = [], replaceToken = false, prefix;
var tag = /\btag\b/.test(token.type) && !/>$/.test(token.string);
var tagName = tag && /^\w/.test(token.string), tagStart;
if (tagName) {
var before = cm.getLine(cur.line).slice(Math.max(0, token.start - 2), token.start);
var tagType = /<\/$/.test(before) ? "close" : /<$/.test(before) ? "open" : null;
if (tagType) tagStart = token.start - (tagType == "close" ? 2 : 1);
} else if (tag && token.string == "<") {
tagType = "open";
} else if (tag && token.string == "</") {
tagType = "close";
}
if (!tag && !inner.state.tagName || tagType) {
if (tagName)
prefix = token.string;
replaceToken = tagType;
var cx = inner.state.context, curTag = cx && tags[cx.tagName];
var childList = cx ? curTag && curTag.children : tags["!top"];
if (childList && tagType != "close") {
for (var i = 0; i < childList.length; ++i) if (!prefix || matches(childList[i], prefix, matchInMiddle))
result.push("<" + childList[i]);
} else if (tagType != "close") {
for (var name in tags)
if (tags.hasOwnProperty(name) && name != "!top" && name != "!attrs" && (!prefix || matches(name, prefix, matchInMiddle)))
result.push("<" + name);
}
if (cx && (!prefix || tagType == "close" && matches(cx.tagName, prefix, matchInMiddle)))
result.push("</" + cx.tagName + ">");
} else {
// Attribute completion
var curTag = tags[inner.state.tagName], attrs = curTag && curTag.attrs;
var globalAttrs = tags["!attrs"];
if (!attrs && !globalAttrs) return;
if (!attrs) {
attrs = globalAttrs;
} else if (globalAttrs) { // Combine tag-local and global attributes
var set = {};
for (var nm in globalAttrs) if (globalAttrs.hasOwnProperty(nm)) set[nm] = globalAttrs[nm];
for (var nm in attrs) if (attrs.hasOwnProperty(nm)) set[nm] = attrs[nm];
attrs = set;
}
if (token.type == "string" || token.string == "=") { // A value
var before = cm.getRange(Pos(cur.line, Math.max(0, cur.ch - 60)),
Pos(cur.line, token.type == "string" ? token.start : token.end));
var atName = before.match(/([^\s\u00a0=<>\"\']+)=$/), atValues;
if (!atName || !attrs.hasOwnProperty(atName[1]) || !(atValues = attrs[atName[1]])) return;
if (typeof atValues == 'function') atValues = atValues.call(this, cm); // Functions can be used to supply values for autocomplete widget
if (token.type == "string") {
prefix = token.string;
var n = 0;
if (/['"]/.test(token.string.charAt(0))) {
quote = token.string.charAt(0);
prefix = token.string.slice(1);
n++;
}
var len = token.string.length;
if (/['"]/.test(token.string.charAt(len - 1))) {
quote = token.string.charAt(len - 1);
prefix = token.string.substr(n, len - 2);
}
if (n) { // an opening quote
var line = cm.getLine(cur.line);
if (line.length > token.end && line.charAt(token.end) == quote) token.end++; // include a closing quote
}
replaceToken = true;
}
for (var i = 0; i < atValues.length; ++i) if (!prefix || matches(atValues[i], prefix, matchInMiddle))
result.push(quote + atValues[i] + quote);
} else { // An attribute name
if (token.type == "attribute") {
prefix = token.string;
replaceToken = true;
}
for (var attr in attrs) if (attrs.hasOwnProperty(attr) && (!prefix || matches(attr, prefix, matchInMiddle)))
result.push(attr);
}
}
return {
list: result,
from: replaceToken ? Pos(cur.line, tagStart == null ? token.start : tagStart) : cur,
to: replaceToken ? Pos(cur.line, token.end) : cur
};
}
CodeMirror.registerHelper("hint", "xml", getHints);
});