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/*
* Copyright 2000-2014 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.refactoring.changeSignature;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.progress.ProgressManager;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.Iconable;
import com.intellij.openapi.util.Ref;
import com.intellij.psi.PsiElement;
import com.intellij.refactoring.RefactoringBundle;
import com.intellij.ui.CheckedTreeNode;
import com.intellij.ui.ColoredTreeCellRenderer;
import javax.swing.tree.TreeNode;
import java.util.*;
public abstract class MethodNodeBase<M extends PsiElement> extends CheckedTreeNode {
protected final M myMethod;
protected final Set<M> myCalled;
protected final Project myProject;
protected final Runnable myCancelCallback;
private boolean myOldChecked;
protected abstract MethodNodeBase<M> createNode(M caller, HashSet<M> called);
protected abstract List<M> computeCallers();
protected abstract void customizeRendererText(ColoredTreeCellRenderer renderer);
protected MethodNodeBase(final M method, Set<M> called, Project project, Runnable cancelCallback) {
super(method);
myMethod = method;
myCalled = called;
myProject = project;
myCancelCallback = cancelCallback;
isChecked = false;
}
//IMPORTANT: do not build children in children()
private void buildChildren() {
if (children == null) {
final List<M> callers = findCallers();
children = new Vector(callers.size());
for (M caller : callers) {
final HashSet<M> called = new HashSet<M>(myCalled);
called.add(myMethod);
final MethodNodeBase<M> child = createNode(caller, called);
children.add(child);
child.parent = this;
}
}
}
@Override
public TreeNode getChildAt(int index) {
buildChildren();
return super.getChildAt(index);
}
@Override
public int getChildCount() {
buildChildren();
return super.getChildCount();
}
@Override
public int getIndex(TreeNode aChild) {
buildChildren();
return super.getIndex(aChild);
}
private List<M> findCallers() {
if (myMethod == null) return Collections.emptyList();
final Ref<List<M>> callers = new Ref<List<M>>();
if (!ProgressManager.getInstance().runProcessWithProgressSynchronously(new Runnable() {
@Override
public void run() {
ApplicationManager.getApplication().runReadAction(new Runnable() {
@Override
public void run() {
callers.set(computeCallers());
}
});
}
}, RefactoringBundle.message("caller.chooser.looking.for.callers"), true, myProject)) {
myCancelCallback.run();
return Collections.emptyList();
}
return callers.get();
}
public void customizeRenderer(ColoredTreeCellRenderer renderer) {
if (myMethod == null) return;
int flags = Iconable.ICON_FLAG_VISIBILITY | Iconable.ICON_FLAG_READ_STATUS;
renderer.setIcon(myMethod.getIcon(flags));
customizeRendererText(renderer);
}
@Override
public void setEnabled(final boolean enabled) {
super.setEnabled(enabled);
if (!enabled) {
myOldChecked = isChecked();
setChecked(false);
}
else {
setChecked(myOldChecked);
}
}
public M getMethod() {
return myMethod;
}
public PsiElement getElementToSearch() {
return getMethod();
}
}
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