public boolean isUsed(@NotNull PsiElement element, @NotNull FindUsagesOptions findUsagesOptions) {
FindUsagesHandler handler = getFindUsagesHandler(element, true);
if (handler == null) return false;
UsageInfoToUsageConverter.TargetElementsDescriptor descriptor =
new UsageInfoToUsageConverter.TargetElementsDescriptor(element);
UsageSearcher usageSearcher = createUsageSearcher(descriptor, handler, findUsagesOptions, null);
final AtomicBoolean used = new AtomicBoolean();
usageSearcher.generate(
new Processor<Usage>() {
@Override
public boolean process(final Usage usage) {
used.set(true);
return false;
}
});
return used.get();
}
private static Usage findSiblingUsage(
@NotNull final UsageSearcher usageSearcher,
FileSearchScope dir,
final FileEditorLocation currentLocation,
@NotNull final boolean[] usagesWereFound,
@NotNull FileEditor fileEditor) {
if (fileEditor.getUserData(KEY_START_USAGE_AGAIN) != null) {
dir =
dir == FileSearchScope.AFTER_CARET
? FileSearchScope.FROM_START
: FileSearchScope.FROM_END;
}
final FileSearchScope direction = dir;
final Usage[] foundUsage = {null};
usageSearcher.generate(
new Processor<Usage>() {
@Override
public boolean process(Usage usage) {
usagesWereFound[0] = true;
if (direction == FileSearchScope.FROM_START) {
foundUsage[0] = usage;
return false;
}
if (direction == FileSearchScope.FROM_END) {
foundUsage[0] = usage;
} else if (direction == FileSearchScope.AFTER_CARET) {
if (Comparing.compare(usage.getLocation(), currentLocation) > 0) {
foundUsage[0] = usage;
return false;
}
} else if (direction == FileSearchScope.BEFORE_CARET) {
if (Comparing.compare(usage.getLocation(), currentLocation) < 0) {
if (foundUsage[0] != null) {
if (foundUsage[0].getLocation().compareTo(usage.getLocation()) < 0) {
foundUsage[0] = usage;
}
} else {
foundUsage[0] = usage;
}
} else {
return false;
}
}
return true;
}
});
fileEditor.putUserData(KEY_START_USAGE_AGAIN, null);
return foundUsage[0];
}
private static Usage findSiblingUsage(
@NotNull final UsageSearcher usageSearcher,
@NotNull FileSearchScope dir,
final FileEditorLocation currentLocation,
@NotNull final AtomicBoolean usagesWereFound,
@NotNull FileEditor fileEditor) {
if (fileEditor.getUserData(KEY_START_USAGE_AGAIN) != null) {
dir =
dir == FileSearchScope.AFTER_CARET
? FileSearchScope.FROM_START
: FileSearchScope.FROM_END;
}
final FileSearchScope direction = dir;
final AtomicReference<Usage> foundUsage = new AtomicReference<Usage>();
usageSearcher.generate(
new Processor<Usage>() {
@Override
public boolean process(Usage usage) {
usagesWereFound.set(true);
if (direction == FileSearchScope.FROM_START) {
foundUsage.compareAndSet(null, usage);
return false;
}
if (direction == FileSearchScope.FROM_END) {
foundUsage.set(usage);
} else if (direction == FileSearchScope.AFTER_CARET) {
if (Comparing.compare(usage.getLocation(), currentLocation) > 0) {
foundUsage.set(usage);
return false;
}
} else if (direction == FileSearchScope.BEFORE_CARET) {
if (Comparing.compare(usage.getLocation(), currentLocation) >= 0) {
return false;
}
while (true) {
Usage found = foundUsage.get();
if (found == null) {
if (foundUsage.compareAndSet(null, usage)) break;
} else {
if (Comparing.compare(found.getLocation(), usage.getLocation()) < 0
&& foundUsage.compareAndSet(found, usage)) break;
}
}
}
return true;
}
});
fileEditor.putUserData(KEY_START_USAGE_AGAIN, null);
return foundUsage.get();
}