BasicTypeFieldProvider.java

/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates.
 *
 * 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 org.kie.workbench.common.forms.fields.shared.fieldTypes.basic;

import java.util.ArrayList;
import java.util.List;
import javax.annotation.PostConstruct;

import org.jboss.errai.common.client.api.Assert;
import org.kie.workbench.common.forms.fields.shared.FieldProvider;
import org.kie.workbench.common.forms.model.FieldDataType;
import org.kie.workbench.common.forms.model.FieldDefinition;

public abstract class BasicTypeFieldProvider<FIELD extends FieldDefinition> implements FieldProvider<FIELD> {

    protected List<String> supportedTypes = new ArrayList<>();

    @PostConstruct
    protected void registerFields() {
        doRegisterFields();
    }

    public abstract int getPriority();

    protected abstract void doRegisterFields();

    public String[] getSupportedTypes() {
        return supportedTypes.toArray(new String[supportedTypes.size()]);
    }

    protected void registerPropertyType(Class type) {
        registerPropertyType(type.getName());
    }

    protected void registerPropertyType(String type) {
        Assert.notNull("Type cannot be null",
                       type);

        supportedTypes.add(type);
    }

    @Override
    public FIELD getFieldByType(FieldDataType typeInfo) {
        if (typeInfo.getType() == null) {
            return getDefaultField();
        }
        if (isSupported(typeInfo)) {
            return createFieldByType(typeInfo);
        }
        return null;
    }

    public abstract FIELD createFieldByType(FieldDataType typeInfo);

    @Override
    public boolean isCompatible(FieldDefinition field) {
        Assert.notNull("Field cannot be null",
                       field);

        if (getFieldType().equals(field.getFieldType().getClass())) {
            return true;
        }

        return isSupported(field.getFieldTypeInfo());
    }

    protected boolean isSupported(FieldDataType typeInfo) {
        for (String type : supportedTypes) {
            if (type.equals(typeInfo.getType())) {
                return true;
            }
        }
        return false;
    }

    public boolean supports(Class clazz) {
        return supportedTypes.contains(clazz.getName());
    }
}