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/*
* 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.DebuggerContext;
import com.intellij.debugger.engine.DebuggerManagerThreadImpl;
import com.intellij.debugger.engine.evaluation.EvaluateException;
import com.intellij.debugger.engine.evaluation.EvaluationContext;
import com.intellij.debugger.engine.evaluation.EvaluationContextImpl;
import com.intellij.debugger.settings.ViewsGeneralSettings;
import com.intellij.debugger.ui.impl.watch.ArrayElementDescriptorImpl;
import com.intellij.debugger.ui.impl.watch.MessageDescriptor;
import com.intellij.debugger.ui.impl.watch.NodeManagerImpl;
import com.intellij.debugger.ui.impl.watch.ValueDescriptorImpl;
import com.intellij.debugger.ui.tree.DebuggerTreeNode;
import com.intellij.debugger.ui.tree.NodeDescriptor;
import com.intellij.debugger.ui.tree.NodeDescriptorFactory;
import com.intellij.debugger.ui.tree.ValueDescriptor;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.roots.LanguageLevelProjectExtension;
import com.intellij.openapi.util.DefaultJDOMExternalizer;
import com.intellij.openapi.util.InvalidDataException;
import com.intellij.openapi.util.WriteExternalException;
import com.intellij.pom.java.LanguageLevel;
import com.intellij.psi.JavaPsiFacade;
import com.intellij.psi.PsiElementFactory;
import com.intellij.psi.PsiExpression;
import com.intellij.util.IncorrectOperationException;
import com.sun.jdi.ArrayReference;
import com.sun.jdi.ArrayType;
import com.sun.jdi.Type;
import com.sun.jdi.Value;
import org.jdom.Element;
import org.jetbrains.annotations.NonNls;
import java.util.ArrayList;
import java.util.List;
import java.util.ListIterator;
/**
* User: lex
* Date: Sep 18, 2003
* Time: 3:07:19 PM
*/
public class ArrayRenderer extends NodeRendererImpl{
private static final Logger LOG = Logger.getInstance("#com.intellij.debugger.ui.tree.render.ArrayRenderer");
public static final @NonNls String UNIQUE_ID = "ArrayRenderer";
public int START_INDEX = 0;
public int END_INDEX = 100;
public int ENTRIES_LIMIT = 101;
private final static String MORE_ELEMENTS = "...";
private boolean myForced = false;
public ArrayRenderer() {
myProperties.setEnabled(true);
}
public String getUniqueId() {
return UNIQUE_ID;
}
public boolean isEnabled() {
return myProperties.isEnabled();
}
public void setEnabled(boolean enabled) {
myProperties.setEnabled(enabled);
}
public @NonNls String getName() {
return "Array";
}
public void setName(String text) {
LOG.assertTrue(false);
}
public ArrayRenderer clone() {
return (ArrayRenderer)super.clone();
}
public String calcLabel(ValueDescriptor descriptor, EvaluationContext evaluationContext, DescriptorLabelListener listener) throws EvaluateException {
return ClassRenderer.calcLabel(descriptor);
}
public void setForced(boolean forced) {
myForced = forced;
}
public void buildChildren(Value value, ChildrenBuilder builder, EvaluationContext evaluationContext) {
DebuggerManagerThreadImpl.assertIsManagerThread();
List<DebuggerTreeNode> children = new ArrayList<DebuggerTreeNode>();
NodeManagerImpl nodeManager = (NodeManagerImpl)builder.getNodeManager();
NodeDescriptorFactory descriptorFactory = builder.getDescriptorManager();
if (!myForced) {
builder.initChildrenArrayRenderer(this);
}
ArrayReference array = (ArrayReference)value;
if (array.length() > 0) {
int added = 0;
if(ENTRIES_LIMIT > END_INDEX - START_INDEX + 1) {
ENTRIES_LIMIT = END_INDEX - START_INDEX;
}
if(ENTRIES_LIMIT <= 0) {
ENTRIES_LIMIT = 1;
}
if(array.length() - 1 >= START_INDEX) {
int start = START_INDEX;
int end = array.length() - 1 < END_INDEX ? array.length() - 1 : END_INDEX;
int idx;
for (idx = start; idx <= end; idx++) {
DebuggerTreeNode arrayItemNode = nodeManager.createNode(descriptorFactory.getArrayItemDescriptor(builder.getParentDescriptor(), array, idx), evaluationContext);
if (arrayItemNode == null) continue;
if (ViewsGeneralSettings.getInstance().HIDE_NULL_ARRAY_ELEMENTS) {
// need to init value to be able to ask for null
ValueDescriptorImpl descriptor = (ValueDescriptorImpl)arrayItemNode.getDescriptor();
descriptor.setContext((EvaluationContextImpl)evaluationContext);
if (descriptor.isNull()) continue;
}
//if(added >= (ENTRIES_LIMIT + 1)/ 2) break;
children.add(arrayItemNode);
added++;
}
start = idx;
//List<DebuggerTreeNode> childrenTail = new ArrayList<DebuggerTreeNode>();
//for (idx = end; idx >= start; idx--) {
// DebuggerTreeNode arrayItemNode = nodeManager.createNode(descriptorFactory.getArrayItemDescriptor(builder.getParentDescriptor(), array, idx), evaluationContext);
//
// if (arrayItemNode == null) continue;
// if (ViewsGeneralSettings.getInstance().HIDE_NULL_ARRAY_ELEMENTS && ((ValueDescriptorImpl)arrayItemNode.getDescriptor()).isNull()) continue;
// if(added >= ENTRIES_LIMIT) break;
// childrenTail.add(arrayItemNode);
// added++;
//}
//array is printed in the following way
// ...
// items1...itemENTRIES_LIMIT/2
// ...
// itemENTRIES_LIMIT/2+1...itemENTRIES_LIMIT
// ...
//when itemENTRIES_LIMIT/2+1...itemENTRIES_LIMIT set is empty, we should not add middle "..." node
//if(idx >= start && !(ENTRIES_LIMIT == 1 && END_INDEX < array.length())) {
// children.add(nodeManager.createMessageNode(new MessageDescriptor(MORE_ELEMENTS, MessageDescriptor.SPECIAL)));
//}
//for (ListIterator<DebuggerTreeNode> iterator = childrenTail.listIterator(childrenTail.size()); iterator.hasPrevious();) {
// DebuggerTreeNode debuggerTreeNode = iterator.previous();
// children.add(debuggerTreeNode);
//}
}
if (added == 0) {
if(START_INDEX == 0 && array.length() - 1 <= END_INDEX) {
children.add(nodeManager.createMessageNode(MessageDescriptor.ALL_ELEMENTS_IN_RANGE_ARE_NULL.getLabel()));
}
else {
children.add(nodeManager.createMessageNode(MessageDescriptor.ALL_ELEMENTS_IN_VISIBLE_RANGE_ARE_NULL.getLabel()));
}
}
else {
//if(START_INDEX > 0) {
// children.add(0, nodeManager.createMessageNode(new MessageDescriptor(MORE_ELEMENTS, MessageDescriptor.SPECIAL)));
//}
if(!myForced && END_INDEX < array.length() - 1) {
//children.add(nodeManager.createMessageNode(new MessageDescriptor(MORE_ELEMENTS, MessageDescriptor.SPECIAL)));
builder.setRemaining(array.length()-END_INDEX);
}
}
}
builder.setChildren(children);
}
public void readExternal(Element element) throws InvalidDataException {
super.readExternal(element);
DefaultJDOMExternalizer.readExternal(this, element);
}
public void writeExternal(Element element) throws WriteExternalException {
super.writeExternal(element);
DefaultJDOMExternalizer.writeExternal(this, element);
}
public PsiExpression getChildValueExpression(DebuggerTreeNode node, DebuggerContext context) {
LOG.assertTrue(node.getDescriptor() instanceof ArrayElementDescriptorImpl, node.getDescriptor().getClass().getName());
ArrayElementDescriptorImpl descriptor = (ArrayElementDescriptorImpl)node.getDescriptor();
PsiElementFactory elementFactory = JavaPsiFacade.getInstance(node.getProject()).getElementFactory();
try {
LanguageLevel languageLevel = LanguageLevelProjectExtension.getInstance(node.getProject()).getLanguageLevel();
return elementFactory.createExpressionFromText("this[" + descriptor.getIndex() + "]", elementFactory.getArrayClass(languageLevel));
}
catch (IncorrectOperationException e) {
LOG.error(e);
return null;
}
}
public boolean isExpandable(Value value, EvaluationContext evaluationContext, NodeDescriptor parentDescriptor) {
return value instanceof ArrayReference && ((ArrayReference)value).length() > 0;
}
public boolean isApplicable(Type type) {
return (type instanceof ArrayType);
}
}
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