Subversion-Projekte lars-tiefland.cienc

// 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"));

  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 getHints(cm, options) {

    var tags = options && options.schemaInfo;

    var quote = (options && options.quoteChar) || '"';

    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 || childList[i].lastIndexOf(prefix, 0) == 0)

          result.push("<" + childList[i]);

      } else if (tagType != "close") {

        for (var name in tags)

          if (tags.hasOwnProperty(name) && name != "!top" && name != "!attrs" && (!prefix || name.lastIndexOf(prefix, 0) == 0))

            result.push("<" + name);

      }

      if (cx && (!prefix || tagType == "close" && cx.tagName.lastIndexOf(prefix, 0) == 0))

        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);

          }

          replaceToken = true;

        }

        for (var i = 0; i < atValues.length; ++i) if (!prefix || atValues[i].lastIndexOf(prefix, 0) == 0)

          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 || attr.lastIndexOf(prefix, 0) == 0))

          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);

});