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/*
 * The MIT License
 *
 * Copyright (c) 2009-2023 PrimeTek Informatics
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package org.primefaces.component.dnd;

import java.util.Collection;
import java.util.Map;

import javax.faces.FacesException;
import javax.faces.application.ResourceDependency;
import javax.faces.component.UIComponent;
import javax.faces.component.UIData;
import javax.faces.component.UINamingContainer;
import javax.faces.context.FacesContext;
import javax.faces.event.AjaxBehaviorEvent;
import javax.faces.event.BehaviorEvent;
import javax.faces.event.FacesEvent;

import org.primefaces.event.DragDropEvent;
import org.primefaces.expression.SearchExpressionFacade;
import org.primefaces.util.ComponentUtils;
import org.primefaces.util.Constants;
import org.primefaces.util.MapBuilder;

@ResourceDependency(library = "primefaces", name = "jquery/jquery.js")
@ResourceDependency(library = "primefaces", name = "jquery/jquery-plugins.js")
@ResourceDependency(library = "primefaces", name = "core.js")
@ResourceDependency(library = "primefaces", name = "components.js")
public class Droppable extends DroppableBase {

    public static final String COMPONENT_TYPE = "org.primefaces.component.Droppable";

    private static final String DEFAULT_EVENT = "drop";

    private static final Map> BEHAVIOR_EVENT_MAPPING = MapBuilder.>builder()
            .put("drop", null)
            .build();

    private static final Collection EVENT_NAMES = BEHAVIOR_EVENT_MAPPING.keySet();

    @Override
    public Map> getBehaviorEventMapping() {
        return BEHAVIOR_EVENT_MAPPING;
    }

    @Override
    public Collection getEventNames() {
        return EVENT_NAMES;
    }

    @Override
    public String getDefaultEventName() {
        return DEFAULT_EVENT;
    }

    @Override
    public void queueEvent(FacesEvent event) {
        FacesContext context = getFacesContext();

        if (ComponentUtils.isRequestSource(this, context)) {
            Map params = context.getExternalContext().getRequestParameterMap();
            String eventName = params.get(Constants.RequestParams.PARTIAL_BEHAVIOR_EVENT_PARAM);
            String clientId = getClientId(context);

            AjaxBehaviorEvent behaviorEvent = (AjaxBehaviorEvent) event;

            if ("drop".equals(eventName)) {
                String dragId = params.get(clientId + "_dragId");
                String dropId = params.get(clientId + "_dropId");
                DragDropEvent dndEvent = null;
                String datasourceId = getDatasource();

                if (datasourceId != null) {
                    UIData datasource = findDatasource(context, this, datasourceId);
                    String[] idTokens = dragId.split(String.valueOf(UINamingContainer.getSeparatorChar(context)));
                    int rowIndex = Integer.parseInt(idTokens[idTokens.length - 2]);
                    datasource.setRowIndex(rowIndex);
                    Object data = datasource.getRowData();
                    datasource.setRowIndex(-1);

                    dndEvent = new DragDropEvent(this, behaviorEvent.getBehavior(), dragId, dropId, data);
                }
                else {
                    dndEvent = new DragDropEvent(this, behaviorEvent.getBehavior(), dragId, dropId);
                }

                super.queueEvent(dndEvent);
            }

        }
        else {
            super.queueEvent(event);
        }
    }

    protected UIData findDatasource(FacesContext context, Droppable droppable, String datasourceId) {
        UIComponent datasource = SearchExpressionFacade.resolveComponent(context, droppable, datasourceId);

        if (datasource == null) {
            throw new FacesException("Cannot find component \"" + datasourceId + "\" in view.");
        }
        else {
            return (UIData) datasource;
        }
    }
}