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/**
* Copyright (C) 2010-2011 eBusiness Information, Excilys Group
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed To in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.googlecode.androidannotations.validation;
import java.lang.annotation.Annotation;
import java.util.List;
import javax.annotation.processing.ProcessingEnvironment;
import javax.lang.model.element.Element;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.VariableElement;
import com.googlecode.androidannotations.annotations.AfterTextChange;
import com.googlecode.androidannotations.helper.IdAnnotationHelper;
import com.googlecode.androidannotations.helper.IdValidatorHelper;
import com.googlecode.androidannotations.model.AnnotationElements;
import com.googlecode.androidannotations.rclass.IRClass;
import com.googlecode.androidannotations.rclass.IRClass.Res;
public class AfterTextChangeValidator implements ElementValidator {
private final IdValidatorHelper validatorHelper;
private final IdAnnotationHelper annotationHelper;
public AfterTextChangeValidator(ProcessingEnvironment processingEnv, IRClass rClass) {
annotationHelper = new IdAnnotationHelper(processingEnv, getTarget(), rClass);
validatorHelper = new IdValidatorHelper(annotationHelper);
}
@Override
public Class<? extends Annotation> getTarget() {
return AfterTextChange.class;
}
@Override
public boolean validate(Element element, AnnotationElements validatedElements) {
IsValid valid = new IsValid();
validatorHelper.enclosingElementHasEnhancedViewSupportAnnotation(element, validatedElements, valid);
validatorHelper.idsExists(element, Res.ID, valid);
validatorHelper.isNotPrivate(element, valid);
validatorHelper.doesntThrowException((ExecutableElement) element, valid);
ExecutableElement executableElement = (ExecutableElement) element;
validatorHelper.returnTypeIsVoid(executableElement, valid);
haveAfterTextChangedMethodParameters(executableElement, valid);
return valid.isValid();
}
private void haveAfterTextChangedMethodParameters(ExecutableElement executableElement, IsValid valid) {
List<? extends VariableElement> parameters = executableElement.getParameters();
boolean editableParameterFound = false;
boolean textViewParameterFound = false;
for (VariableElement parameter : parameters) {
String parameterType = parameter.asType().toString();
if (parameterType.equals("android.text.Editable")) {
if (editableParameterFound) {
annotationHelper.printAnnotationError(executableElement, "Unrecognized parameter declaration. you can declare only one parameter of type android.text.Editable");
valid.invalidate();
}
editableParameterFound = true;
continue;
}
if (parameterType.equals("android.widget.TextView")) {
if (textViewParameterFound) {
annotationHelper.printAnnotationError(executableElement, "Unrecognized parameter declaration. you can declare only one parameter of type android.widget.TextView");
valid.invalidate();
}
textViewParameterFound = true;
continue;
}
valid.invalidate();
annotationHelper.printAnnotationError(executableElement, "Unrecognized parameter type. %s can only have a android.widget.TextView parameter and/or an android.text.Editable parameter. See android.text.TextWatcher.afterTextChanged() for more informations.");
}
}
}