/*
 * Copyright 2000-2013 JetBrains s.r.o.
 * Copyright 2014-2014 AS3Boyan
 * Copyright 2014-2014 Elias Ku
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.intellij.plugins.haxe.ide.highlight;

import com.intellij.lexer.FlexAdapter;
import com.intellij.lexer.Lexer;
import com.intellij.openapi.editor.DefaultLanguageHighlighterColors;
import com.intellij.openapi.editor.colors.TextAttributesKey;
import com.intellij.openapi.editor.markup.TextAttributes;
import com.intellij.openapi.fileTypes.SyntaxHighlighterBase;
import com.intellij.plugins.haxe.hxml.HXMLParser;
import com.intellij.plugins.haxe.hxml.HXMLParserDefinition;
import com.intellij.plugins.haxe.hxml.lexer.HXMLLexer;
import com.intellij.plugins.haxe.hxml.psi.HXMLElementType;
import com.intellij.plugins.haxe.hxml.psi.HXMLTokenType;
import com.intellij.plugins.haxe.hxml.psi.HXMLTypes;
import com.intellij.psi.TokenType;
import com.intellij.psi.tree.IElementType;
import org.jetbrains.annotations.NotNull;

import java.awt.*;
import java.io.Reader;

import static com.intellij.openapi.editor.colors.TextAttributesKey.createTextAttributesKey;

public class HXMLSyntaxHighlighter extends SyntaxHighlighterBase {
  public static final TextAttributesKey KEY = createTextAttributesKey("SIMPLE_KEY", DefaultLanguageHighlighterColors.KEYWORD);
  public static final TextAttributesKey VALUE = createTextAttributesKey("SIMPLE_VALUE", DefaultLanguageHighlighterColors.STRING);
  public static final TextAttributesKey CLASS_NAME = createTextAttributesKey("SIMPLE_CLASS_NAME", DefaultLanguageHighlighterColors.CLASS_REFERENCE);
  public static final TextAttributesKey COMMENT = createTextAttributesKey("SIMPLE_COMMENT", DefaultLanguageHighlighterColors.LINE_COMMENT);
  public static final TextAttributesKey INCLUDE = createTextAttributesKey("SIMPLE_INCLUDE", DefaultLanguageHighlighterColors.CONSTANT);

  static final TextAttributesKey BAD_CHARACTER = createTextAttributesKey("SIMPLE_BAD_CHARACTER", new TextAttributes(Color.RED, null, null, null, Font.BOLD));

  private static final TextAttributesKey[] BAD_CHAR_KEYS = new TextAttributesKey[]{BAD_CHARACTER};
  private static final TextAttributesKey[] KEY_KEYS = new TextAttributesKey[]{KEY};
  private static final TextAttributesKey[] VALUE_KEYS = new TextAttributesKey[]{VALUE};
  private static final TextAttributesKey[] COMMENT_KEYS = new TextAttributesKey[]{COMMENT};
  private static final TextAttributesKey[] INCLUDE_KEYS = new TextAttributesKey[]{INCLUDE};
  private static final TextAttributesKey[] CLASS_NAME_KEYS = new TextAttributesKey[]{CLASS_NAME};
  private static final TextAttributesKey[] EMPTY_KEYS = new TextAttributesKey[0];

  @NotNull
  @Override
  public Lexer getHighlightingLexer() {
    return new FlexAdapter(new HXMLLexer((Reader)null));
  }

  @NotNull
  @Override
  public TextAttributesKey[] getTokenHighlights(IElementType tokenType) {
    if (tokenType.equals(HXMLTypes.KEY)) {
      return KEY_KEYS;
    }
    else if (tokenType.equals(HXMLTypes.QUALIFIEDCLASSNAME)) {
      return CLASS_NAME_KEYS;
    }
    else if (tokenType.equals(HXMLTypes.VALUE)) {
      return VALUE_KEYS;
    }
    else if (tokenType.equals(HXMLTypes.COMMENT)) {
      return COMMENT_KEYS;
    }
    else if (tokenType.equals(TokenType.BAD_CHARACTER)) {
      return BAD_CHAR_KEYS;
    }
    if (tokenType.equals(HXMLTypes.HXML_FILE)) {
      return INCLUDE_KEYS;
    }
    else {
      return EMPTY_KEYS;
    }
  }
}