wicketdnd.test.DnDTester.java Source code

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Here is the source code for wicketdnd.test.DnDTester.java

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/*
 * Copyright 2009 Sven Meier
 *
 * 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 wicketdnd.test;

import java.util.List;

import org.apache.wicket.Component;
import org.apache.wicket.WicketRuntimeException;
import org.apache.wicket.behavior.Behavior;
import org.apache.wicket.protocol.http.mock.MockHttpServletRequest;
import org.apache.wicket.util.tester.WicketTester;

import wicketdnd.DragSource;
import wicketdnd.DropTarget;
import wicketdnd.Location;
import wicketdnd.Operation;

/**
 * A test for DnD operations.
 * 
 * @author svenmeier
 */
public class DnDTester {

    private WicketTester tester;

    public DnDTester(WicketTester tester) {
        this.tester = tester;
    }

    /**
     * Execute a drag over a location in the given dropTarget.
     * 
     * @param dropTarget
     *            target of drops
     * @param location
     *            drag over location
     */
    public void executeDrag(Component dropTarget, Location location) {
        executeDrag(getBehavior(dropTarget, DropTarget.class), location);
    }

    /**
     * Execute a drag over a location in the given dropTarget.
     * 
     * @param dropTarget
     *            target of drops
     * @param location
     *            drag over location
     */
    public void executeDrag(DropTarget dropTarget, Location location) {
        MockHttpServletRequest request = tester.getRequest();

        request.setParameter("phase", "drag");

        request.setParameter("component", location.getComponent().getMarkupId());
        request.setParameter("anchor", location.getAnchor().name());

        tester.executeBehavior(dropTarget);
    }

    /**
     * Execute a drop on a location in the given dropTarget
     * 
     * @param dropTarget
     *            target of drops
     * @param location
     *            drop location
     * @param operation
     *            DnD operation
     * @param dragSource
     *            source of drags
     * @param drag
     *            dragged component
     */
    public void executeDrop(Component dropTarget, Location location, Operation operation, Component dragSource,
            Component drag) {
        executeDrop(getBehavior(dropTarget, DropTarget.class), location, operation,
                getBehavior(dragSource, DragSource.class), drag);
    }

    /**
     * Execute a drop on a location in the given dropTarget
     * 
     * @param dropTarget
     *            target of drops
     * @param location
     *            drop location
     * @param operation
     *            DnD operation
     * @param dragSource
     *            source of drags
     * @param drag
     *            dragged component
     */
    public void executeDrop(DropTarget dropTarget, Location location, Operation operation, DragSource dragSource,
            Component drag) {
        MockHttpServletRequest request = tester.getRequest();

        request.setParameter("phase", "drop");

        request.setParameter("component", location.getComponent().getMarkupId());
        request.setParameter("anchor", location.getAnchor().name());

        request.setParameter("operation", operation.name());

        request.setParameter("path", dragSource.getPath());
        request.setParameter("behavior", "" + dragSource.getBehaviorId());
        request.setParameter("drag", drag.getMarkupId());

        tester.executeBehavior(dropTarget);
    }

    private <T extends Behavior> T getBehavior(Component component, Class<T> clazz) {
        List<T> behaviors = component.getBehaviors(clazz);
        if (behaviors.size() == 0) {
            throw new WicketRuntimeException("no behavior of type " + clazz.getName());
        } else if (behaviors.size() > 1) {
            throw new WicketRuntimeException("multiple behaviors of type " + clazz.getName());
        }

        return behaviors.get(0);
    }
}