public static Icon getIcon(
@NotNull final VirtualFile file,
@Iconable.IconFlags final int flags,
@Nullable final Project project) {
Icon lastIcon = Iconable.LastComputedIcon.get(file, flags);
final Icon base = lastIcon != null ? lastIcon : VirtualFilePresentation.getIconImpl(file);
return IconDeferrer.getInstance()
.defer(base, new FileIconKey(file, project, flags), ICON_NULLABLE_FUNCTION);
}
public static Icon getClassIcon(int flags, @NotNull PsiClass aClass, @Nullable Icon symbolIcon) {
Icon base = Iconable.LastComputedIcon.get(aClass, flags);
if (base == null) {
if (symbolIcon == null) {
symbolIcon =
ElementPresentationUtil.getClassIconOfKind(
aClass, ElementPresentationUtil.getBasicClassKind(aClass));
}
RowIcon baseIcon = ElementBase.createLayeredIcon(aClass, symbolIcon, 0);
base = ElementPresentationUtil.addVisibilityIcon(aClass, flags, baseIcon);
}
return IconDeferrer.getInstance()
.defer(base, new ClassIconRequest(aClass, flags, symbolIcon), FULL_ICON_EVALUATOR);
}
@Override
public Icon fun(final FileIconKey key) {
final VirtualFile file = key.getFile();
final int flags = key.getFlags();
final Project project = key.getProject();
if (!file.isValid()
|| project != null && (project.isDisposed() || !wasEverInitialized(project)))
return null;
final Icon providersIcon = getProvidersIcon(file, flags, project);
Icon icon =
providersIcon == null ? VirtualFilePresentation.getIconImpl(file) : providersIcon;
final boolean dumb = project != null && DumbService.getInstance(project).isDumb();
for (FileIconPatcher patcher : getPatchers()) {
if (dumb && !DumbService.isDumbAware(patcher)) {
continue;
}
icon = patcher.patchIcon(icon, file, flags, project);
}
if ((flags & Iconable.ICON_FLAG_READ_STATUS) != 0
&& (!file.isWritable()
|| !WritingAccessProvider.isPotentiallyWritable(file, project))) {
icon = new LayeredIcon(icon, PlatformIcons.LOCKED_ICON);
}
if (file.is(VFileProperty.SYMLINK)) {
icon = new LayeredIcon(icon, PlatformIcons.SYMLINK_ICON);
}
Iconable.LastComputedIcon.put(file, icon, flags);
return icon;
}