@Override
public void updateParameterInfo(
@NotNull JetValueArgumentList argumentList, @NotNull UpdateParameterInfoContext context) {
if (context.getParameterOwner() != argumentList) context.removeHint();
int offset = context.getOffset();
ASTNode child = argumentList.getNode().getFirstChildNode();
int i = 0;
while (child != null && child.getStartOffset() < offset) {
if (child.getElementType() == JetTokens.COMMA) ++i;
child = child.getTreeNext();
}
context.setCurrentParameter(i);
}
private void updateComponent() {
if (!myHint.isVisible()) {
Disposer.dispose(this);
return;
}
final PsiFile file =
PsiDocumentManager.getInstance(myProject).getPsiFile(myEditor.getDocument());
CharSequence chars = myEditor.getDocument().getCharsSequence();
boolean noDelimiter =
myHandler instanceof ParameterInfoHandlerWithTabActionSupport
&& ((ParameterInfoHandlerWithTabActionSupport) myHandler)
.getActualParameterDelimiterType()
== TokenType.WHITE_SPACE;
int caretOffset = myEditor.getCaretModel().getOffset();
final int offset =
noDelimiter ? caretOffset : CharArrayUtil.shiftBackward(chars, caretOffset - 1, " \t") + 1;
final UpdateParameterInfoContext context = new MyUpdateParameterInfoContext(offset, file);
final Object elementForUpdating = myHandler.findElementForUpdatingParameterInfo(context);
if (elementForUpdating != null) {
myHandler.updateParameterInfo(elementForUpdating, context);
if (!myDisposed
&& myHint.isVisible()
&& !myEditor.isDisposed()
&& myEditor.getComponent().getRootPane() != null) {
myComponent.update();
IdeTooltip tooltip = myHint.getCurrentIdeTooltip();
short position =
tooltip != null ? toShort(tooltip.getPreferredPosition()) : HintManager.UNDER;
Pair<Point, Short> pos =
myProvider.getBestPointPosition(
myHint,
elementForUpdating instanceof PsiElement ? (PsiElement) elementForUpdating : null,
caretOffset,
true,
position);
HintManagerImpl.adjustEditorHintPosition(myHint, myEditor, pos.getFirst(), pos.getSecond());
}
} else {
context.removeHint();
}
}
private static JetValueArgumentList findCallAndUpdateContext(UpdateParameterInfoContext context) {
PsiFile file = context.getFile();
PsiElement element = file.findElementAt(context.getOffset());
if (element == null) return null;
PsiElement parent = element.getParent();
while (parent != null && !(parent instanceof JetValueArgumentList)) {
element = element.getParent();
parent = parent.getParent();
}
if (parent == null) return null;
JetValueArgumentList argumentList = (JetValueArgumentList) parent;
if (element instanceof JetValueArgument) {
JetValueArgument arg = (JetValueArgument) element;
int i = argumentList.getArguments().indexOf(arg);
context.setCurrentParameter(i);
context.setHighlightedParameter(arg);
}
return argumentList;
}