fr.amapj.view.engine.searcher.Searcher.java Source code

Introduction

Here is the source code for fr.amapj.view.engine.searcher.Searcher.java

Source

/*
 *  Copyright 2013-2018 Emmanuel BRUN (contact@amapj.fr)
 * 
 *  This file is part of AmapJ.
 *  
 *  AmapJ is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
    
 *  AmapJ is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with AmapJ.  If not, see <http://www.gnu.org/licenses/>.
 * 
 * 
 */
package fr.amapj.view.engine.searcher;

import java.util.List;

import com.vaadin.data.Property;
import com.vaadin.data.fieldgroup.FieldGroup;
import com.vaadin.ui.ComboBox;

import fr.amapj.model.engine.Identifiable;

/**
 * Implementation du searcher 
 * 
 */
public class Searcher extends ComboBox {
    private Object params;

    private SearcherDefinition iSearcher;

    private Searcher linkedSearcher;

    // 
    private List<? extends Identifiable> fixedValues = null;

    public Searcher(SearcherDefinition iSearcher) {
        this(iSearcher, iSearcher.getTitle(), null);
    }

    public Searcher(SearcherDefinition iSearcher, String title) {
        this(iSearcher, title, null);
    }

    public Searcher(SearcherDefinition iSearcher, String title, List<? extends Identifiable> fixedValues) {
        super(title);
        this.iSearcher = iSearcher;
        this.fixedValues = fixedValues;

        setImmediate(true);
        setWidth("300px");

        // Si il n'y a pas de paramtres on peut tout de suite charger le contenu 
        if (iSearcher.needParams() == false) {
            refreshLines();
        }

    }

    public void setParams(Object params) {
        this.params = params;
        refreshLines();
    }

    public void setLinkedSearcher(Searcher linkedSearcher) {
        this.linkedSearcher = linkedSearcher;

        //
        linkedSearcher.addValueChangeListener(new Property.ValueChangeListener() {
            @Override
            public void valueChange(Property.ValueChangeEvent event) {
                handleChangeLinkedSearcher();
            }
        });

        // On remplit immdiatement le searcher si le searcher li est dj actif 
        if (linkedSearcher.getConvertedValue() != null) {
            handleChangeLinkedSearcher();
        }

    }

    private void handleChangeLinkedSearcher() {
        Long id = (Long) linkedSearcher.getConvertedValue();
        setParams(id);
    }

    private void refreshLines() {
        removeAllItems();
        if (canBeFill()) {
            List<? extends Identifiable> identifiables = getValues();
            for (Identifiable identifiable : identifiables) {
                addItem(identifiable.getId());
                setItemCaption(identifiable.getId(), iSearcher.toString(identifiable));
            }
        }
    }

    /**
     * Permet de retrouver la liste des valeurs  mettre dans le searcher
     * @return
     */
    private List<? extends Identifiable> getValues() {
        if (fixedValues != null) {
            return fixedValues;
        }

        return iSearcher.getAllElements(params);
    }

    /**
     * 
     * @return
     */
    private boolean canBeFill() {
        if ((iSearcher.needParams()) && (params == null)) {
            return false;
        }
        return true;
    }

    public void bind(FieldGroup binder, String propertyId) {
        binder.bind(this, propertyId);
    }

}