private void emitListenerBindings(StringBuilder builder, ViewInjection injection) {
Map<ListenerClass, Map<ListenerMethod, ListenerBinding>> bindings =
injection.getListenerBindings();
if (bindings.isEmpty()) {
return;
}
String extraIndent = "";
// We only need to emit the null check if there are zero required bindings.
boolean needsNullChecked = injection.getRequiredBindings().isEmpty();
if (needsNullChecked) {
builder.append(" if (view != null) {\n");
extraIndent = " ";
}
for (Map.Entry<ListenerClass, Map<ListenerMethod, ListenerBinding>> e : bindings.entrySet()) {
ListenerClass listener = e.getKey();
Map<ListenerMethod, ListenerBinding> methodBindings = e.getValue();
// Emit: ((OWNER_TYPE) view).SETTER_NAME(
boolean needsCast = !VIEW_TYPE.equals(listener.targetType());
builder.append(extraIndent).append(" ");
if (needsCast) {
builder.append("((").append(listener.targetType());
if (listener.genericArguments() > 0) {
builder.append('<');
for (int i = 0; i < listener.genericArguments(); i++) {
if (i > 0) {
builder.append(", ");
}
builder.append('?');
}
builder.append('>');
}
builder.append(") ");
}
builder.append("view");
if (needsCast) {
builder.append(')');
}
builder.append('.').append(listener.setter()).append("(\n");
// Emit: new TYPE() {
builder.append(extraIndent).append(" new ").append(listener.type()).append("() {\n");
for (ListenerMethod method : getListenerMethods(listener)) {
// Emit: @Override public RETURN_TYPE METHOD_NAME(
builder
.append(extraIndent)
.append(" @Override public ")
.append(method.returnType())
.append(' ')
.append(method.name())
.append("(\n");
// Emit listener method arguments, each on their own line.
String[] parameterTypes = method.parameters();
for (int i = 0, count = parameterTypes.length; i < count; i++) {
builder
.append(extraIndent)
.append(" ")
.append(parameterTypes[i])
.append(" p")
.append(i);
if (i < count - 1) {
builder.append(',');
}
builder.append('\n');
}
// Emit end of parameters, start of body.
builder.append(extraIndent).append(" ) {\n");
// Set up the return statement, if needed.
builder.append(extraIndent).append(" ");
boolean hasReturnType = !"void".equals(method.returnType());
if (hasReturnType) {
builder.append("return ");
}
if (methodBindings.containsKey(method)) {
ListenerBinding binding = methodBindings.get(method);
builder.append("target.").append(binding.getName()).append('(');
List<Parameter> parameters = binding.getParameters();
String[] listenerParameters = method.parameters();
for (int i = 0, count = parameters.size(); i < count; i++) {
Parameter parameter = parameters.get(i);
int listenerPosition = parameter.getListenerPosition();
emitCastIfNeeded(builder, listenerParameters[listenerPosition], parameter.getType());
builder.append('p').append(listenerPosition);
if (i < count - 1) {
builder.append(", ");
}
}
builder.append(");");
} else if (hasReturnType) {
builder.append(method.defaultReturn()).append(';');
}
builder.append('\n');
// Emit end of listener method.
builder.append(extraIndent).append(" }\n");
}
// Emit end of listener class body and close the setter method call.
builder.append(extraIndent).append(" });\n");
}
if (needsNullChecked) {
builder.append(" }\n");
}
}
