xml/impl/src/com/intellij/xml/breadcrumbs/XmlLanguageBreadcrumbsInfoProvider.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 /*
  18  * Created by IntelliJ IDEA.
  19  * User: spleaner
  20  * Date: Jun 19, 2007
  21  * Time: 4:44:25 PM
  22  */
  23 package com.intellij.xml.breadcrumbs;
  24
  25 import com.intellij.lang.Language;
  26 import com.intellij.lang.html.HTMLLanguage;
  27 import com.intellij.lang.xhtml.XHTMLLanguage;
  28 import com.intellij.lang.xml.XMLLanguage;
  29 import com.intellij.psi.PsiElement;
  30 import com.intellij.psi.xml.XmlAttribute;
  31 import com.intellij.psi.xml.XmlTag;
  32 import org.jetbrains.annotations.NonNls;
  33 import org.jetbrains.annotations.NotNull;
  34 import org.jetbrains.annotations.Nullable;
  35
  36 import java.util.StringTokenizer;
  37
  38 public class XmlLanguageBreadcrumbsInfoProvider extends BreadcrumbsInfoProvider {
  39   @NonNls private static final String CLASS_ATTRIBUTE_NAME = "class";
  40   @NonNls private static final String ID_ATTRIBUTE_NAME = "id";
  41
  42   public boolean acceptElement(@NotNull final PsiElement e) {
  43     return e instanceof XmlTag && e.isValid();
  44   }
  45
  46   public Language[] getLanguages() {
  47     return new Language[]{XHTMLLanguage.INSTANCE, HTMLLanguage.INSTANCE};
  48   }
  49
  50   @NotNull
  51   public String getElementInfo(@NotNull final PsiElement e) {
  52     final XmlTag tag = (XmlTag)e;
  53     final StringBuffer sb = new StringBuffer();
  54
  55     sb.append(tag.getName());
  56
  57     final boolean addHtmlInfo = e.getContainingFile().getLanguage() != XMLLanguage.INSTANCE;
  58
  59     if (addHtmlInfo) {
  60       final String id_value = tag.getAttributeValue(ID_ATTRIBUTE_NAME);
  61       if (null != id_value) {
  62         sb.append("#").append(id_value);
  63       }
  64
  65       final String class_value = tag.getAttributeValue(CLASS_ATTRIBUTE_NAME);
  66       if (null != class_value) {
  67         final StringTokenizer tokenizer = new StringTokenizer(class_value, " ");
  68         while (tokenizer.hasMoreTokens()) {
  69           sb.append(".").append(tokenizer.nextToken());
  70         }
  71       }
  72     }
  73
  74     return sb.toString();
  75   }
  76
  77   @Nullable
  78   public String getElementTooltip(@NotNull final PsiElement e) {
  79     final XmlTag tag = (XmlTag)e;
  80     final StringBuffer result = new StringBuffer("<");
  81     result.append(tag.getName());
  82     final XmlAttribute[] attributes = tag.getAttributes();
  83     for (final XmlAttribute each : attributes) {
  84       result.append(" ").append(each.getText());
  85     }
  86
  87     if (tag.isEmpty()) {
  88       result.append("/>");
  89     }
  90     else {
  91       result.append(">...</").append(tag.getName()).append(">");
  92     }
  93
  94     return result.toString();
  95   }
  96 }