com.allen_sauer.gwt.dnd.client.drop.FlowPanelDropController.java Source code

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Here is the source code for com.allen_sauer.gwt.dnd.client.drop.FlowPanelDropController.java

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/*
 * Copyright 2009 Fred Sauer
 *
 * 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 com.allen_sauer.gwt.dnd.client.drop;

import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.Widget;

import com.allen_sauer.gwt.dnd.client.DragContext;
import com.allen_sauer.gwt.dnd.client.util.DOMUtil;
import com.allen_sauer.gwt.dnd.client.util.DragClientBundle;
import com.allen_sauer.gwt.dnd.client.util.LocationWidgetComparator;

/**
 * A {@link DropController} for instances of {@link FlowPanel}.
 */
public class FlowPanelDropController extends AbstractInsertPanelDropController {

    /**
     * @param dropTarget the flow panel drop target
     */
    public FlowPanelDropController(FlowPanel dropTarget) {
        super(dropTarget);
    }

    @Override
    protected LocationWidgetComparator getLocationWidgetComparator() {
        return isRtl() ? LocationWidgetComparator.BOTTOM_LEFT_COMPARATOR
                : LocationWidgetComparator.BOTTOM_RIGHT_COMPARATOR;
    }

    @Override
    protected Widget newPositioner(DragContext context) {
        HTML positioner = new HTML("※");
        positioner.addStyleName(DragClientBundle.INSTANCE.css().flowPanelPositioner());
        return positioner;
    }
}