xml/dom-openapi/src/com/intellij/util/xml/DomTarget.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 package com.intellij.util.xml;
  17
  18 import com.intellij.openapi.util.TextRange;
  19 import com.intellij.openapi.util.text.StringUtil;
  20 import com.intellij.pom.PomRenameableTarget;
  21 import com.intellij.pom.PsiDeclaredTarget;
  22 import com.intellij.psi.DelegatePsiTarget;
  23 import com.intellij.psi.PsiElement;
  24 import com.intellij.psi.xml.XmlAttributeValue;
  25 import com.intellij.psi.xml.XmlTag;
  26 import com.intellij.psi.xml.XmlTagValue;
  27 import com.intellij.xml.util.XmlTagUtil;
  28 import com.intellij.util.ObjectUtils;
  29 import org.jetbrains.annotations.NotNull;
  30 import org.jetbrains.annotations.Nullable;
  31
  32 /**
  33  * @author peter
  34  */
  35 public class DomTarget extends DelegatePsiTarget implements PsiDeclaredTarget, PomRenameableTarget {
  36   private final DomElement myDomElement;
  37   private final TextRange myRange;
  38
  39   private DomTarget(DomElement domElement, PsiElement navigationElement, TextRange range) {
  40     super(navigationElement);
  41     myDomElement = domElement;
  42     myRange = range;
  43   }
  44
  45   @Nullable
  46   public static DomTarget getTarget(@NotNull DomElement element) {
  47     final GenericDomValue value = element.getGenericInfo().getNameDomElement(element);
  48     if (value == null) {
  49       return null;
  50     }
  51
  52     if (value instanceof GenericAttributeValue) {
  53       final GenericAttributeValue genericAttributeValue = (GenericAttributeValue)value;
  54       final XmlAttributeValue attributeValue = genericAttributeValue.getXmlAttributeValue();
  55       if (attributeValue == null) {
  56         return null;
  57       }
  58
  59       final int length = attributeValue.getTextLength();
  60       if (length > 2) {
  61         return new DomTarget(element, attributeValue, new TextRange(1, length - 1));
  62       }
  63     }
  64
  65     final XmlTag tag = value.getXmlTag();
  66     if (tag == null) {
  67       return null;
  68     }
  69
  70     XmlTagValue tagValue = tag.getValue();
  71     if (StringUtil.isEmpty(tagValue.getTrimmedText())) {
  72       return null;
  73     }
  74
  75     return new DomTarget(element, tag, XmlTagUtil.getTrimmedValueRange(tag));
  76   }
  77
  78   public TextRange getNameIdentifierRange() {
  79     return myRange;
  80   }
  81
  82   public boolean isWritable() {
  83     return getNavigationElement().isWritable();
  84   }
  85
  86   public Object setName(@NotNull String newName) {
  87     ObjectUtils.assertNotNull(myDomElement.getGenericInfo().getNameDomElement(myDomElement)).setStringValue(newName);
  88     return myDomElement;
  89   }
  90
  91   @Nullable
  92   public String getName() {
  93     return myDomElement.getGenericInfo().getElementName(myDomElement);
  94   }
  95
  96   @Override
  97   public boolean equals(Object o) {
  98     if (this == o) return true;
  99     if (o == null || getClass() != o.getClass()) return false;
 100     if (!super.equals(o)) return false;
 101
 102     DomTarget domTarget = (DomTarget)o;
 103
 104     if (myDomElement != null ? !myDomElement.equals(domTarget.myDomElement) : domTarget.myDomElement != null) return false;
 105
 106     return true;
 107   }
 108
 109   @Override
 110   public int hashCode() {
 111     int result = super.hashCode();
 112     result = 31 * result + (myDomElement != null ? myDomElement.hashCode() : 0);
 113     result = 31 * result + (myRange != null ? myRange.hashCode() : 0);
 114     return result;
 115   }
 116
 117   public DomElement getDomElement() {
 118     return myDomElement;
 119   }
 120 }