cherry.example.web.validation.ex20.ValidationEx20ControllerImpl.java Source code

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Here is the source code for cherry.example.web.validation.ex20.ValidationEx20ControllerImpl.java

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/*
 * Copyright 2015 agwlvssainokuni
 *
 * 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 cherry.example.web.validation.ex20;

import static cherry.example.web.util.ModelAndViewBuilder.redirect;
import static cherry.example.web.util.ModelAndViewBuilder.withViewname;
import static cherry.example.web.util.ModelAndViewBuilder.withoutView;
import static org.springframework.web.servlet.mvc.method.annotation.MvcUriComponentsBuilder.fromMethodCall;
import static org.springframework.web.servlet.mvc.method.annotation.MvcUriComponentsBuilder.on;

import java.util.Locale;

import org.apache.commons.lang3.StringUtils;
import org.springframework.mobile.device.site.SitePreference;
import org.springframework.security.core.Authentication;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.web.context.request.NativeWebRequest;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.util.UriComponents;
import org.springframework.web.util.UriComponentsBuilder;

import cherry.example.web.util.ViewNameUtil;

@Controller
public class ValidationEx20ControllerImpl implements ValidationEx20Controller {

    private final String viewnameOfStart = ViewNameUtil
            .fromMethodCall(on(ValidationEx20Controller.class).start(null, null, null, null, null, null));

    @Override
    public ModelAndView init(String redirTo, Authentication auth, Locale locale, SitePreference sitePref,
            NativeWebRequest request) {
        return redirect(redirectOnInit(redirTo)).build();
    }

    @Override
    public ModelAndView start(ValidationEx20Form form, BindingResult binding, Authentication auth, Locale locale,
            SitePreference sitePref, NativeWebRequest request) {
        return withViewname(viewnameOfStart).build();
    }

    @Override
    public ModelAndView confirm(ValidationEx20Form form, BindingResult binding, Authentication auth, Locale locale,
            SitePreference sitePref, NativeWebRequest request) {

        if (hasErrors(form, binding)) {
            return withViewname(viewnameOfStart).build();
        }

        return withoutView().build();
    }

    @Override
    public ModelAndView back(ValidationEx20Form form, BindingResult binding, Authentication auth, Locale locale,
            SitePreference sitePref, NativeWebRequest request) {
        return withViewname(viewnameOfStart).build();
    }

    private UriComponents redirectOnInit(String redir) {
        if (StringUtils.isNotEmpty(redir)) {
            return UriComponentsBuilder.fromPath(redir).build();
        } else {
            return fromMethodCall(on(ValidationEx20Controller.class).start(null, null, null, null, null, null))
                    .build();
        }
    }

    private boolean hasErrors(ValidationEx20Form form, BindingResult binding) {

        // ??
        if (binding.hasErrors()) {
            return true;
        }

        // ?

        // ??

        return false;
    }

}