private static TestToolWindow createViewTab(Project project, PsiElement baseElement) {
    final ToolWindowManager toolWindowManager = ToolWindowManager.getInstance(project);
    ToolWindow toolWindow = toolWindowManager.getToolWindow(TOOL_WINDOW_ID);
    if (toolWindow == null) {
        toolWindow = toolWindowManager.registerToolWindow(TOOL_WINDOW_ID,
                true,
                ToolWindowAnchor.BOTTOM);
    }
    final TestToolWindow view = new TestToolWindow(project);
    ToolWindow finalToolWindow = toolWindow;
    toolWindow.activate(() -> {
        final String text = SymbolPresentationUtil.getSymbolPresentableText(baseElement);
        final ContentImpl content = new ContentImpl(view, "to " + text, true);
        finalToolWindow.getContentManager().addContent(content);
        finalToolWindow.getContentManager().setSelectedContent(content, true);
    });
    return view;
}
 

@Override
public boolean iteration() {
  final CommonProblemDescriptor descriptor = myDescriptors[myCount++];
  ProgressIndicator indicator = myTask.getIndicator();
  if (indicator != null) {
    indicator.setFraction((double)myCount / myDescriptors.length);
    if (descriptor instanceof ProblemDescriptor) {
      final PsiElement psiElement = ((ProblemDescriptor)descriptor).getPsiElement();
      if (psiElement != null) {
        indicator.setText("Processing " + SymbolPresentationUtil.getSymbolPresentableText(psiElement));
      }
    }
  }
  applyFix(myProject, myContext, new CommonProblemDescriptor[]{descriptor}, myIgnoredElements);
  return isDone();
}
 

@Override
public String getFullName(final Object element) {
  for(ChooseByNameContributor c: getContributors()) {
    if (c instanceof GotoClassContributor) {
      String result = ((GotoClassContributor) c).getQualifiedName((NavigationItem) element);
      if (result != null) return result;
    }
  }

  if (element instanceof PsiElement) {
    final PsiElement psiElement = (PsiElement)element;

    final String containerText = SymbolPresentationUtil.getSymbolContainerText(psiElement);
    return containerText + "." + getElementName(element);
  }

  return getElementName(element);
}
 

@Nullable
@Override
protected String getContainerText(PsiElement element, String name)
{
	VirtualFile virtualFile = PsiUtilCore.getVirtualFile(element);
	if(virtualFile == null)
	{
		return SymbolPresentationUtil.getSymbolContainerText(element);
	}
	else
	{
		return "(" + virtualFile.getPath() + ")";
	}
}
 

@Override
public String getElementText(PsiElement element)
{
	PsiElement map = myMap.fun(element);
	if(map != null)
	{
		return SymbolPresentationUtil.getSymbolPresentableText(map);
	}
	return SymbolPresentationUtil.getSymbolPresentableText(element);
}
 

@Override
public String getContainerText(PsiElement element, final String name)
{
	PsiElement map = myMap.fun(element);
	if(map != null)
	{
		return SymbolPresentationUtil.getSymbolContainerText(map);
	}
	return SymbolPresentationUtil.getSymbolContainerText(element);
}
 

protected JTextField createSourceClassField() {
  JTextField result = new JTextField();
  result.setEditable(false);
  final String qualifiedName = mySourceClass.getQualifiedName();
  result.setText(qualifiedName != null ? qualifiedName : SymbolPresentationUtil.getSymbolPresentableText(mySourceClass));
  return result;
}
 

@Nullable
@Override
protected String getContainerText(PsiElement psiElement, String s) {
    // relative path else fallback to default name extraction
    PsiFile containingFile = psiElement.getContainingFile();
    String relativePath = VfsUtil.getRelativePath(containingFile.getVirtualFile(), ProjectUtil.getProjectDir(psiElement), '/');
    return relativePath != null ? relativePath : SymbolPresentationUtil.getSymbolContainerText(psiElement);
}
 

@Override
public String getElementText(PsiElement psiElement) {
    return StringUtils.abbreviate(
        SymbolPresentationUtil.getSymbolPresentableText(psiElement),
        50
    );
}
 

@Override
public boolean iteration() {
  final CommonProblemDescriptor descriptor = myDescriptors[myCount++];
  ProgressIndicator indicator = myTask.getIndicator();
  if (indicator != null) {
    indicator.setFraction((double)myCount / myDescriptors.length);
    String presentableText = "usages";
    if (descriptor instanceof ProblemDescriptor) {
      final PsiElement psiElement = ((ProblemDescriptor)descriptor).getPsiElement();
      if (psiElement != null) {
        presentableText = SymbolPresentationUtil.getSymbolPresentableText(psiElement);
      }
    }
    indicator.setText("Processing " + presentableText);
  }

  final boolean[] runInReadAction = {false};
  final QuickFix[] fixes = descriptor.getFixes();
  if (fixes != null) {
    for (QuickFix fix : fixes) {
      if (!fix.startInWriteAction()) {
        runInReadAction[0] = true;
      } else {
        runInReadAction[0] = false;
        break;
      }
    }
  }

  ApplicationManager.getApplication().runWriteAction(() -> {
    myDocumentManager.commitAllDocuments();
    if (!runInReadAction[0]) {
      applyFix(myProject, descriptor);
    }
  });
  if (runInReadAction[0]) {
    applyFix(myProject, descriptor);
  }
  return isDone();
}
 

private void updateElementImplementations(final PsiElement element, final Editor editor, @Nonnull Project project, final PsiFile file) {
  PsiElement[] impls = {};
  String text = "";
  if (element != null) {
    // if (element instanceof PsiPackage) return;
    PsiFile containingFile = element.getContainingFile();
    if (containingFile == null || !containingFile.getViewProvider().isPhysical()) return;

    impls = getSelfAndImplementations(editor, element, createImplementationsSearcher());
    text = SymbolPresentationUtil.getSymbolPresentableText(element);
  }

  showImplementations(impls, project, text, editor, file, element, false, false);
}
 

@Override
protected void doOKAction() {
  mySelectedClass = calcSelectedClass();
  if (mySelectedClass == null) return;
  if (!myClassFilter.isAccepted(mySelectedClass)) {
    Messages.showErrorDialog(myTabbedPane.getComponent(), SymbolPresentationUtil.getSymbolPresentableText(mySelectedClass) + " is not acceptable");
    return;
  }
  super.doOKAction();
}
 

@Override
public String getElementText(PsiElement element)
{
	VirtualFile virtualFile = PsiUtilCore.getVirtualFile(element);
	return virtualFile == null ? SymbolPresentationUtil.getSymbolPresentableText(element) : virtualFile.getName();
}
 

@Override
public String getElementText(PsiElement psiElement) {
    String symbolPresentableText = SymbolPresentationUtil.getSymbolPresentableText(psiElement);
    return StringUtils.abbreviate(symbolPresentableText, 50);
}
 

public void performForContext(@Nonnull DataContext dataContext, boolean invokedByShortcut) {
  final Project project = dataContext.getData(CommonDataKeys.PROJECT);
  if (project == null) return;
  PsiDocumentManager.getInstance(project).commitAllDocuments();

  PsiFile file = dataContext.getData(CommonDataKeys.PSI_FILE);
  Editor editor = getEditor(dataContext);

  PsiElement element = dataContext.getData(CommonDataKeys.PSI_ELEMENT);
  boolean isInvokedFromEditor = dataContext.getData(CommonDataKeys.EDITOR) != null;
  element = getElement(project, file, editor, element);

  if (element == null && file == null) return;
  PsiFile containingFile = element != null ? element.getContainingFile() : file;
  if (containingFile == null || !containingFile.getViewProvider().isPhysical()) return;


  PsiReference ref = null;
  if (editor != null) {
    ref = TargetElementUtil.findReference(editor, editor.getCaretModel().getOffset());
    if (element == null && ref != null) {
      element = TargetElementUtil.adjustReference(ref);
    }
  }

  //check attached sources if any
  if (element instanceof PsiCompiledElement) {
    element = element.getNavigationElement();
  }

  String text = "";
  PsiElement[] impls = PsiElement.EMPTY_ARRAY;
  if (element != null) {
    impls = getSelfAndImplementations(editor, element, createImplementationsSearcher());
    text = SymbolPresentationUtil.getSymbolPresentableText(element);
  }

  if (impls.length == 0 && ref instanceof PsiPolyVariantReference) {
    final PsiPolyVariantReference polyReference = (PsiPolyVariantReference)ref;
    PsiElement refElement = polyReference.getElement();
    TextRange rangeInElement = polyReference.getRangeInElement();
    String refElementText = refElement.getText();
    LOG.assertTrue(rangeInElement.getEndOffset() <= refElementText.length(), "Ref:" + polyReference + "; refElement: " + refElement + "; refText:" + refElementText);
    text = rangeInElement.substring(refElementText);
    final ResolveResult[] results = polyReference.multiResolve(false);
    final List<PsiElement> implsList = new ArrayList<>(results.length);

    for (ResolveResult result : results) {
      final PsiElement resolvedElement = result.getElement();

      if (resolvedElement != null && resolvedElement.isPhysical()) {
        implsList.add(resolvedElement);
      }
    }

    if (!implsList.isEmpty()) {
      impls = implsList.toArray(new PsiElement[implsList.size()]);
    }
  }


  showImplementations(impls, project, text, editor, file, element, isInvokedFromEditor, invokedByShortcut);
}
 

static String getTitle(@Nonnull PsiElement element, boolean isShort) {
  String title = SymbolPresentationUtil.getSymbolPresentableText(element);
  return isShort ? title != null ? title : element.getText() : CodeInsightBundle.message("javadoc.info.title", title != null ? title : element.getText());
}
 

@Override
public String getElementText(PsiElement element){
  return SymbolPresentationUtil.getSymbolPresentableText(element);
}
 

@Override
public String getContainerText(PsiElement element, final String name){
  return SymbolPresentationUtil.getSymbolContainerText(element);
}