private void renderDocumentation(
Element element, SignatureInfo signatureInfo, Optional<Integer> activeParameter) {
if (signatureInfo.getDocumentation().isPresent()) {
elemental.html.DivElement documentation =
Elements.createDivElement(resources.css().documentation());
documentation.setTextContent(signatureInfo.getDocumentation().get());
element.appendChild(documentation);
}
if (signatureInfo.getParameters().isPresent()
&& activeParameter.isPresent()
&& signatureInfo.getParameters().get().size() > activeParameter.get()) {
ParameterInfo parameterInfo = signatureInfo.getParameters().get().get(activeParameter.get());
if (parameterInfo.getDocumentation().isPresent()) {
elemental.html.DivElement parameter =
Elements.createDivElement(resources.css().documentationParameter());
SpanElement label = Elements.createSpanElement(resources.css().documentationParameter());
label.setTextContent(parameterInfo.getLabel());
SpanElement documentation = Elements.createSpanElement(resources.css().documentation());
documentation.setTextContent(parameterInfo.getDocumentation().get());
parameter.appendChild(label);
parameter.appendChild(documentation);
element.appendChild(parameter);
}
}
}
private void renderParameters(
Element parent, SignatureInfo signatureInfo, Optional<Integer> activeParameter) {
int end = signatureInfo.getLabel().length();
int idx;
Element element;
for (int i = signatureInfo.getParameters().get().size() - 1; i >= 0; i--) {
ParameterInfo parameterInfo = signatureInfo.getParameters().get().get(i);
idx = signatureInfo.getLabel().lastIndexOf(parameterInfo.getLabel(), end);
int signatureLabelOffset = 0;
int signatureLabelEnd = 0;
if (idx >= 0) {
signatureLabelOffset = idx;
signatureLabelEnd = idx + parameterInfo.getLabel().length();
}
element = Elements.createSpanElement();
element.setTextContent(signatureInfo.getLabel().substring(signatureLabelEnd, end));
parent.insertBefore(element, parent.getFirstElementChild());
element = Elements.createSpanElement(resources.css().parameter());
if (activeParameter.isPresent() && i == activeParameter.get()) {
Elements.addClassName(resources.css().active(), element);
}
element.setTextContent(
signatureInfo.getLabel().substring(signatureLabelOffset, signatureLabelEnd));
parent.insertBefore(element, parent.getFirstElementChild());
end = signatureLabelOffset;
}
element = Elements.createSpanElement();
element.setTextContent(signatureInfo.getLabel().substring(0, end));
parent.insertBefore(element, parent.getFirstElementChild());
}
private void render() {
if (signatureHelp.getSignatures().size() > 1) {
Elements.addClassName(resources.css().multiple(), rootElement);
overloads.getStyle().setDisplay("block");
} else {
Elements.removeClassName(resources.css().multiple(), rootElement);
overloads.getStyle().setDisplay("none");
}
signatures.setInnerHTML("");
signatureViews = new ArrayList<>();
int height = 0;
for (SignatureInfo signatureInfo : signatureHelp.getSignatures()) {
Element signatureElement =
renderSignature(signatures, signatureInfo, signatureHelp.getActiveParameter());
renderDocumentation(signatureElement, signatureInfo, signatureHelp.getActiveParameter());
int signatureHeight = signatureElement.getOffsetHeight();
signatureViews.add(Pair.of(height, signatureHeight));
height += signatureHeight;
}
}
@Inject
public SignatureHelpView(SignatureHelpResources resources) {
super(true);
this.resources = resources;
rootElement =
Elements.createDivElement(resources.css().main(), resources.css().parameterHintsWidget());
Element wrapper = Elements.createDivElement(resources.css().wrapper());
rootElement.appendChild(wrapper);
Element buttons = Elements.createDivElement(resources.css().buttons());
wrapper.appendChild(buttons);
Element previous =
Elements.createDivElement(resources.css().button(), resources.css().previous());
previous.appendChild((Node) resources.arrow().getSvg().getElement());
buttons.appendChild(previous);
previous.addEventListener(
elemental.events.Event.CLICK,
new EventListener() {
@Override
public void handleEvent(elemental.events.Event evt) {
previous();
}
},
true);
Element next = Elements.createDivElement(resources.css().button(), resources.css().next());
next.appendChild((Node) resources.arrow().getSvg().getElement());
next.addEventListener(
elemental.events.Event.CLICK,
new EventListener() {
@Override
public void handleEvent(elemental.events.Event evt) {
next();
}
},
true);
buttons.appendChild(next);
overloads = Elements.createDivElement(resources.css().overloads());
wrapper.appendChild(overloads);
signatures = Elements.createDivElement(resources.css().signatures());
wrapper.appendChild(signatures);
Widget widget = new ElementWidget((com.google.gwt.dom.client.Element) rootElement);
setWidget(widget);
}
