de.swm.commons.mobile.client.widgets.DecoratedSuggestBox.java Source code

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Here is the source code for de.swm.commons.mobile.client.widgets.DecoratedSuggestBox.java

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/*
 * Copyright 2011 SWM Services GmbH.
 * 
 * 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 de.swm.commons.mobile.client.widgets;

import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.resources.client.ImageResource;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.MultiWordSuggestOracle;
import com.google.gwt.user.client.ui.SuggestBox;
import de.swm.commons.mobile.client.SWMMobile;
import de.swm.commons.mobile.client.event.DragController;
import de.swm.commons.mobile.client.event.DragEvent;
import de.swm.commons.mobile.client.event.DragEventsHandler;

/**
 * Suggest box with icon decoration.
 * 
 */
public class DecoratedSuggestBox extends HorizontalPanel implements DragEventsHandler {

    private final SuggestBox suggestBox;
    private final Image img;
    private final ImageResource icon1, icon2;

    /**
     * Default constructor.
     * 
     * @param oracle
     *            multi word oracle
     * @param iconNormal
     *            normal icon
     * @param iconSelected
     *            pressed icon
     * @param handler
     *            if icon was selected (not the suggestion)
     */
    public DecoratedSuggestBox(MultiWordSuggestOracle oracle, ImageResource iconNormal, ImageResource iconSelected,
            ClickHandler handler) {
        setSecondaryStyle(SWMMobile.getTheme().getMGWTCssBundle().getTextBoxCss().decoratedSuggestBox());
        suggestBox = new SuggestBox(oracle);
        suggestBox.addStyleName(SWMMobile.getTheme().getMGWTCssBundle().getTextBoxCss().textBox());
        suggestBox.addStyleName(SWMMobile.getTheme().getMGWTCssBundle().getTextBoxCss().decoratedSuggestBoxInput());
        add(suggestBox);
        this.icon1 = iconNormal;
        this.icon2 = iconSelected;
        img = new Image(iconNormal);
        img.setStyleName(SWMMobile.getTheme().getMGWTCssBundle().getTextBoxCss().decoratedTextBoxIcon(), true);
        img.addClickHandler(handler);
        add(img);
    }

    /**
     * Max limit of suggestions.
     * 
     * @param limit
     *            the limit.
     */
    public void setLimit(int limit) {
        suggestBox.setLimit(limit);
    }

    @Override
    public void onLoad() {
        super.onLoad();
        DragController.get().addDragEventsHandler(this);
    }

    @Override
    public void onUnload() {
        DragController.get().removeDragEventsHandler(this);
    }

    @Override
    public void onDragStart(DragEvent e) {
        if (icon2 != null) {
            img.setResource(icon2);
        }
        e.stopPropagation();
    }

    @Override
    public void onDragMove(DragEvent e) {
        if (icon2 != null) {
            img.setResource(icon2);
        }
        DragController.get().suppressNextClick();
        e.stopPropagation();
    }

    @Override
    public void onDragEnd(DragEvent e) {
        img.setResource(icon1);
        e.stopPropagation();
    }

}