java/debugger/impl/src/com/intellij/debugger/ui/tree/render/CompoundReferenceRenderer.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.engine.DebuggerUtils;
import com.intellij.debugger.settings.NodeRendererSettings;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.psi.CommonClassNames;
import com.sun.jdi.ReferenceType;
import com.sun.jdi.Type;
import org.jetbrains.annotations.NotNull;

public class CompoundReferenceRenderer extends CompoundNodeRenderer{
  private static final Logger LOG = Logger.getInstance("#com.intellij.debugger.ui.tree.render.CompoundReferenceRenderer");

  public CompoundReferenceRenderer(final NodeRendererSettings rendererSettings, String name, ValueLabelRenderer labelRenderer, ChildrenRenderer childrenRenderer) {
    super(rendererSettings, name, labelRenderer, childrenRenderer);
    myProperties.setClassName(CommonClassNames.JAVA_LANG_OBJECT);
    LOG.assertTrue(labelRenderer == null || labelRenderer instanceof ReferenceRenderer);
    LOG.assertTrue(childrenRenderer == null || childrenRenderer instanceof ReferenceRenderer);
  }

  public void setLabelRenderer(ValueLabelRenderer labelRenderer) {
    final ValueLabelRenderer prevRenderer = getLabelRenderer();
    super.setLabelRenderer(myRendererSettings.isBase(labelRenderer) ? null : labelRenderer);
    final ValueLabelRenderer currentRenderer = getLabelRenderer();
    if (prevRenderer != currentRenderer) {
      if (currentRenderer instanceof ReferenceRenderer) {
        ((ReferenceRenderer)currentRenderer).setClassName(getClassName());
      }
    }
  }

  public void setChildrenRenderer(ChildrenRenderer childrenRenderer) {
    final ChildrenRenderer prevRenderer = getChildrenRenderer();
    super.setChildrenRenderer(myRendererSettings.isBase(childrenRenderer) ? null : childrenRenderer);
    final ChildrenRenderer currentRenderer = getChildrenRenderer();
    if (prevRenderer != currentRenderer) {
      if (currentRenderer instanceof ReferenceRenderer) {
        ((ReferenceRenderer)currentRenderer).setClassName(getClassName());
      }
    }
  }

  public ChildrenRenderer getChildrenRenderer() {
    final ChildrenRenderer childrenRenderer = super.getChildrenRenderer();
    return childrenRenderer != null ? childrenRenderer : getDefaultRenderer();
  }

  private NodeRenderer getDefaultRenderer() {
    return getClassName().endsWith("]") ? myRendererSettings.getArrayRenderer() : myRendererSettings.getClassRenderer();
  }

  public ValueLabelRenderer getLabelRenderer() {
    final ValueLabelRenderer labelRenderer = super.getLabelRenderer();
    return labelRenderer != null ? labelRenderer : getDefaultRenderer();
  }

  private ChildrenRenderer getRawChildrenRenderer() {
    NodeRenderer classRenderer = getDefaultRenderer();
    final ChildrenRenderer originalRenderer = super.getChildrenRenderer();
    return originalRenderer == classRenderer ? null : originalRenderer;
  }

  private ValueLabelRenderer getRawLabelRenderer() {
    NodeRenderer classRenderer = getDefaultRenderer();
    final ValueLabelRenderer originalRenderer = super.getLabelRenderer();
    return originalRenderer == classRenderer ? null : originalRenderer;
  }


  public boolean isApplicable(Type type) {
    if(type == null || !(type instanceof ReferenceType) || !DebuggerUtils.instanceOf(type, getClassName())) {
      return false;
    }
    return super.isApplicable(type);
  }

  public void setClassName(@NotNull String name) {
    myProperties.setClassName(name);
    if(getRawLabelRenderer() != null) {
      final ValueLabelRenderer originalLabelRenderer = super.getLabelRenderer();
      if (originalLabelRenderer instanceof ReferenceRenderer) {
        ((ReferenceRenderer)originalLabelRenderer).setClassName(name);
      }
    }

    if(getRawChildrenRenderer() != null) {
      final ChildrenRenderer originalChildrenRenderer = super.getChildrenRenderer();
      if (originalChildrenRenderer instanceof ReferenceRenderer) {
        ((ReferenceRenderer)originalChildrenRenderer).setClassName(name);
      }
    }
  }

  public @NotNull String getClassName() {
    return myProperties.getClassName();
  }
}