java/debugger/impl/src/com/intellij/debugger/ui/tree/render/PrimitiveRenderer.java

/*
 * Copyright 2000-2009 JetBrains s.r.o.
 *
 * 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.debugger.ui.tree.render;

import com.intellij.debugger.DebuggerBundle;
import com.intellij.debugger.DebuggerContext;
import com.intellij.debugger.engine.DebuggerManagerThreadImpl;
import com.intellij.debugger.engine.DebuggerUtils;
import com.intellij.debugger.engine.evaluation.EvaluationContext;
import com.intellij.debugger.ui.tree.DebuggerTreeNode;
import com.intellij.debugger.ui.tree.NodeDescriptor;
import com.intellij.debugger.ui.tree.ValueDescriptor;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.psi.PsiExpression;
import com.sun.jdi.*;
import org.jetbrains.annotations.NonNls;

/**
 * User: lex
 * Date: Sep 18, 2003
 * Time: 3:07:27 PM
 */
public class PrimitiveRenderer extends NodeRendererImpl {
  public static final @NonNls String UNIQUE_ID = "PrimitiveRenderer";
  private static final Logger LOG = Logger.getInstance("#com.intellij.debugger.ui.tree.render.PrimitiveRenderer");

  public PrimitiveRenderer() {
    super("Primitive");
  }

  public String getUniqueId() {
    return UNIQUE_ID;
  }

  public void setName(String text) {
    // prohibit name change
  }

  public final boolean isEnabled() {
    return true;
  }

  public void setEnabled(boolean enabled) {
    // prohibit change
  }

  public boolean isApplicable(Type type) {
    return type == null || type instanceof PrimitiveType || type instanceof VoidType;
  }

  public String calcLabel(ValueDescriptor valueDescriptor, EvaluationContext evaluationContext, DescriptorLabelListener labelListener) {
    Value value = valueDescriptor.getValue();
    if(value == null) {
      //noinspection HardCodedStringLiteral
      return "null";
    }
    else if (value instanceof PrimitiveValue) {
      StringBuilder buf = new StringBuilder(16);
      if (value instanceof CharValue) {
        buf.append("'");
        buf.append(DebuggerUtils.translateStringValue(value.toString()));
        buf.append("' ");
        long longValue = ((PrimitiveValue)value).longValue();
        buf.append(Long.toString(longValue));
      }
      else if (value instanceof ByteValue) {
        buf.append(value.toString());
      }
      else if (value instanceof ShortValue) {
        buf.append(value.toString());
      }
      else if (value instanceof IntegerValue) {
        buf.append(value.toString());
      }
      else if (value instanceof LongValue) {
        buf.append(value.toString());
      }
      else {
        buf.append(value.toString());
      }
      return buf.toString();
    }
    else {
      return DebuggerBundle.message("label.undefined");
    }
  }

  public void buildChildren(Value value, ChildrenBuilder builder, EvaluationContext evaluationContext) {
    DebuggerManagerThreadImpl.assertIsManagerThread();
  }

  public PsiExpression getChildValueExpression(DebuggerTreeNode node, DebuggerContext context) {
    LOG.assertTrue(false);
    return null;
  }

  public boolean isExpandable(Value value, EvaluationContext evaluationContext, NodeDescriptor parentDescriptor) {
    return false;
  }
}