com.gwtcx.client.resources.ImageCell.java Source code

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Here is the source code for com.gwtcx.client.resources.ImageCell.java

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/**
 * (C) Copyright 2010-2013 Kiahu
 *
 * Licensed under the terms of the GNU General Public License version 3
 * as published by the Free Software Foundation. You may obtain a copy of the
 * License at: http://www.gnu.org/copyleft/gpl.html
 *
 * 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.gwtcx.client.resources;

import com.google.gwt.cell.client.AbstractSafeHtmlCell;
import com.google.gwt.core.client.GWT;
import com.google.gwt.resources.client.ImageResource;
import com.google.gwt.safecss.shared.SafeStyles;
import com.google.gwt.safecss.shared.SafeStylesUtils;
import com.google.gwt.safehtml.client.SafeHtmlTemplates;
import com.google.gwt.safehtml.shared.SafeHtml;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.text.shared.SimpleSafeHtmlRenderer;
import com.google.gwt.user.client.ui.AbstractImagePrototype;

/**
 * ImageCell
 */
public class ImageCell extends AbstractSafeHtmlCell<String> {

    public interface Template extends SafeHtmlTemplates {
        @Template("<div name=\"{0}\" style=\"{1}\">{2}</div>")
        SafeHtml cell(String name, SafeStyles styles, SafeHtml value);
    }

    protected static Template template = GWT.create(Template.class);

    protected static final SafeHtml PLACEHOLDER = makeImage(PlaceholderIcons.INSTANCE.placeholder16x16());

    public ImageCell() {
        super(SimpleSafeHtmlRenderer.getInstance());
        // super(SimpleSafeHtmlRenderer.getInstance(), "click", "keydown");
    }

    // public ImageCell(SafeHtmlRenderer<String> renderer) {
    //   super(renderer, "click", "keydown");
    // }

    @Override
    protected void render(Context context, SafeHtml data, SafeHtmlBuilder sb) {

        if (data == null) {
            return;
        }

        SafeStyles imageStyle = SafeStylesUtils.fromTrustedString("float:left; cursor:pointer;");

        SafeHtml rendered = template.cell("image-1", imageStyle, PLACEHOLDER);
        sb.append(rendered);
    }

    public static SafeHtml makeImage(ImageResource resource) {
        AbstractImagePrototype proto = AbstractImagePrototype.create(resource);
        return proto.getSafeHtml();
    }
}

/*
    
    
    
// SafeStyles imageStyle = SafeStylesUtils.fromTrustedString("float:left;cursor:hand;cursor:pointer;");
// SafeStyles imageStyle = SafeStylesUtils.fromTrustedString("width:48px; height:48px; float:left; cursor:pointer;");
    
@Override
public void onBrowserEvent(com.google.gwt.cell.client.Cell.Context context,
        Element parent, String value, NativeEvent event,
        com.google.gwt.cell.client.ValueUpdater<String> valueUpdater) {
    
    // Let AbstractCell handle the keydown event.
    super.onBrowserEvent(context, parent, value, event, valueUpdater);
    
    // Handle the click event.
    if ("click".equals(event.getType())) {
    
        // Ignore clicks that occur outside of the outermost element.
        EventTarget eventTarget = event.getEventTarget();
    
        if (parent.isOrHasChild(Element.as(eventTarget))) {
            // if (parent.getFirstChildElement().isOrHasChild(
            // Element.as(eventTarget))) {
    
            // use this to get the selected element!!
            Element el = Element.as(eventTarget);
    
            // check if we really click on the image
            if (el.getNodeName().equalsIgnoreCase("IMG")) {
                doAction(el.getParentElement().getAttribute("name"),
                        valueUpdater);
            }
    
        }
    }
    
};
    
@Override
protected void onEnterKeyDown(Context context, Element parent,
        String value, NativeEvent event, ValueUpdater<String> valueUpdater) {
    doAction(value, valueUpdater);
}
    
private void doAction(String value, ValueUpdater<String> valueUpdater) {
    // Trigger a value updater. In this case, the value doesn't actually
    // change, but we use a ValueUpdater to let the app know that a value
    // was clicked.
    if (valueUpdater != null)
        valueUpdater.update(value);
}
    
    
*/