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/*
* Copyright 2000-2012 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.xdebugger.impl.ui.tree.actions;
import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.DataContext;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.util.SmartList;
import com.intellij.xdebugger.frame.XFullValueEvaluator;
import com.intellij.xdebugger.impl.ui.XValueTextProvider;
import com.intellij.xdebugger.impl.ui.tree.XDebuggerTree;
import com.intellij.xdebugger.impl.ui.tree.nodes.HeadlessValueEvaluationCallback;
import com.intellij.xdebugger.impl.ui.tree.nodes.WatchMessageNode;
import com.intellij.xdebugger.impl.ui.tree.nodes.XValueNodeImpl;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import javax.swing.tree.TreePath;
import java.util.List;
public abstract class XFetchValueActionBase extends AnAction {
@Nullable
private static TreePath[] getSelectedNodes(DataContext dataContext) {
XDebuggerTree tree = XDebuggerTree.getTree(dataContext);
return tree == null ? null : tree.getSelectionPaths();
}
@Override
public void update(AnActionEvent e) {
TreePath[] paths = getSelectedNodes(e.getDataContext());
if (paths != null) {
for (TreePath path : paths) {
Object node = path.getLastPathComponent();
if (node instanceof XValueNodeImpl) {
if (((XValueNodeImpl)node).isComputed()) {
e.getPresentation().setEnabled(true);
return;
}
}
else if (node instanceof WatchMessageNode) {
e.getPresentation().setEnabled(true);
return;
}
}
}
e.getPresentation().setEnabled(false);
}
@Override
public void actionPerformed(final AnActionEvent e) {
TreePath[] paths = getSelectedNodes(e.getDataContext());
if (paths == null) {
return;
}
ValueCollector valueCollector = new ValueCollector();
for (TreePath path : paths) {
Object node = path.getLastPathComponent();
if (node instanceof XValueNodeImpl) {
XValueNodeImpl valueNode = (XValueNodeImpl)node;
XFullValueEvaluator fullValueEvaluator = valueNode.getFullValueEvaluator();
if (fullValueEvaluator == null) {
String rawValue;
if (valueNode.getValueContainer() instanceof XValueTextProvider) {
rawValue = ((XValueTextProvider)valueNode.getValueContainer()).getValueText();
}
else {
rawValue = valueNode.getRawValue();
}
valueCollector.add(StringUtil.notNullize(rawValue));
}
else {
new CopyValueEvaluationCallback(valueNode, valueCollector).startFetchingValue(fullValueEvaluator);
}
}
else if (node instanceof WatchMessageNode) {
valueCollector.add(((WatchMessageNode)node).getExpression().getExpression());
}
}
valueCollector.processed = true;
valueCollector.finish(e.getProject());
}
private final class ValueCollector {
private final List<String> values = new SmartList<String>();
private volatile boolean processed;
public void add(@NotNull String value) {
values.add(value);
}
public void finish(Project project) {
if (processed && !values.contains(null) && !project.isDisposed()) {
handle(project, StringUtil.join(values, "\n"));
}
}
public int acquire() {
int index = values.size();
values.add(null);
return index;
}
public void evaluationComplete(int index, @NotNull String value, Project project) {
values.set(index, value);
finish(project);
}
}
protected abstract void handle(final Project project, final String value);
private static final class CopyValueEvaluationCallback extends HeadlessValueEvaluationCallback {
private final int myValueIndex;
private final ValueCollector myValueCollector;
public CopyValueEvaluationCallback(@NotNull XValueNodeImpl node, @NotNull ValueCollector valueCollector) {
super(node);
myValueCollector = valueCollector;
myValueIndex = valueCollector.acquire();
}
@Override
protected void evaluationComplete(@NotNull String value, @NotNull Project project) {
myValueCollector.evaluationComplete(myValueIndex, value, project);
}
}
}
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