Java 类com.intellij.ui.ComputableIcon 实例源码

private void update(PsiElement element) {
  if (element != null && element.isValid()) {
    final ItemPresentation presentation = ((NavigationItem)element).getPresentation();
    myIconOpen = presentation == null ? null : ComputableIcon.create(presentation, true);
    myIconClosed = presentation == null ? null : ComputableIcon.create(presentation, false);
    myPresentableText = presentation == null ? UsageViewUtil.createNodeText(element) : presentation.getPresentableText();
    if (myIconOpen == null || myIconClosed == null) {
      if (element instanceof PsiMetaOwner) {
        final PsiMetaOwner psiMetaOwner = (PsiMetaOwner)element;
        final PsiMetaData metaData = psiMetaOwner.getMetaData();
        if (metaData instanceof PsiPresentableMetaData) {
          final PsiPresentableMetaData psiPresentableMetaData = (PsiPresentableMetaData)metaData;
          if (myIconOpen == null) myIconOpen = ComputableIcon.create(psiPresentableMetaData);
          if (myIconClosed == null) myIconClosed = ComputableIcon.create(psiPresentableMetaData);
        }
      }
      else if (element instanceof PsiFile) {
        final PsiFile psiFile = (PsiFile)element;
        final VirtualFile virtualFile = psiFile.getVirtualFile();
        if (virtualFile != null) {
          myIconOpen = ComputableIcon.create(virtualFile);
          myIconClosed = ComputableIcon.create(virtualFile);
        }
      }
    }
  }
}

public void update() {
  final PsiElement element = getElement();
  if (element != null && element.isValid()) {
    final ItemPresentation presentation = ((NavigationItem)element).getPresentation();
    myIconOpen = presentation != null ? ComputableIcon.create(presentation, true) : null;
    myIconClosed = presentation != null ? ComputableIcon.create(presentation, false) : null;
    myPresentableText = presentation != null ? presentation.getPresentableText() : UsageViewUtil.createNodeText(element);
    if (myIconOpen == null || myIconClosed == null) {
      if (element instanceof PsiMetaOwner) {
        final PsiMetaOwner psiMetaOwner = (PsiMetaOwner)element;
        final PsiMetaData metaData = psiMetaOwner.getMetaData();
        if (metaData instanceof PsiPresentableMetaData) {
          final PsiPresentableMetaData psiPresentableMetaData = (PsiPresentableMetaData)metaData;
          if (myIconOpen == null) myIconOpen = ComputableIcon.create(psiPresentableMetaData);
          if (myIconClosed == null) myIconClosed = ComputableIcon.create(psiPresentableMetaData);
        }
      }
      else if (element instanceof PsiFile) {
        final PsiFile psiFile = (PsiFile)element;
        final VirtualFile virtualFile = psiFile.getVirtualFile();
        if (virtualFile != null) {
          myIconOpen = ComputableIcon.create(virtualFile);
          myIconClosed = ComputableIcon.create(virtualFile);
        }
      }
    }
  }
}

private void update(PsiElement element) {
  if (element != null && element.isValid()) {
    final ItemPresentation presentation = ((NavigationItem)element).getPresentation();
    myIconOpen = presentation == null ? null : ComputableIcon.create(presentation, true);
    myIconClosed = presentation == null ? null : ComputableIcon.create(presentation, false);
    myPresentableText = presentation == null ? UsageViewUtil.createNodeText(element) : presentation.getPresentableText();
    if (myIconOpen == null || myIconClosed == null) {
      if (element instanceof PsiMetaOwner) {
        final PsiMetaOwner psiMetaOwner = (PsiMetaOwner)element;
        final PsiMetaData metaData = psiMetaOwner.getMetaData();
        if (metaData instanceof PsiPresentableMetaData) {
          final PsiPresentableMetaData psiPresentableMetaData = (PsiPresentableMetaData)metaData;
          if (myIconOpen == null) myIconOpen = ComputableIcon.create(psiPresentableMetaData);
          if (myIconClosed == null) myIconClosed = ComputableIcon.create(psiPresentableMetaData);
        }
      }
      else if (element instanceof PsiFile) {
        final PsiFile psiFile = (PsiFile)element;
        final VirtualFile virtualFile = psiFile.getVirtualFile();
        if (virtualFile != null) {
          myIconOpen = ComputableIcon.create(virtualFile);
          myIconClosed = ComputableIcon.create(virtualFile);
        }
      }
    }
  }
}

@Override
public Icon getIcon(boolean open) {
  final ComputableIcon computableIcon = open ? myIconOpen : myIconClosed;
  return computableIcon == null ? null : computableIcon.getIcon();
}

@Override
public Icon getIcon(boolean open) {
  final ComputableIcon computableIcon = open ? myIconOpen : myIconClosed;
  return computableIcon == null? null : computableIcon.getIcon();
}

@Override
public Icon getIcon(boolean open) {
  final ComputableIcon computableIcon = open ? myIconOpen : myIconClosed;
  return computableIcon == null ? null : computableIcon.getIcon();
}