BasicViewSplitLayoutPanel.java example

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ovirt-engine-master
package org.ovirt.engine.ui.userportal.widget.basic;

import org.ovirt.engine.ui.userportal.widget.UserPortalSplitLayoutPanel;
import com.google.gwt.core.client.GWT;
import com.google.gwt.resources.client.ImageResource;
import com.google.gwt.safehtml.client.SafeHtmlTemplates;
import com.google.gwt.safehtml.shared.SafeHtml;
import com.google.gwt.user.client.Element;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Widget;

public class BasicViewSplitLayoutPanel extends UserPortalSplitLayoutPanel {

    private static final int SPLILLER_WIDTH_PX = 4;

    private final SafeHtml topBackgroundImage;

    private final SafeHtml middleBackgroundImage;

    interface SplitterTemplate extends SafeHtmlTemplates {
        @Template("<div style=\"width: {2}px; position: absolute; left: 0px; top: 0px; right: 0px; bottom: 2px\">{0}</div>"
                +
                "<div style=\"background-color: #3a5f7c; width: {2}px; position: absolute; left: 0px; top: 5px; right: 0px; bottom: 2px\">{1}</div>")
        SafeHtml dragger(SafeHtml topImage, SafeHtml middleImage, int width);
    }

    private static final SplitterTemplate template = GWT.create(SplitterTemplate.class);

    public BasicViewSplitLayoutPanel(ImageResource topBackgroundImage, ImageResource middleBackgroundImage) {
        super(SPLILLER_WIDTH_PX);

        this.topBackgroundImage =
                createImageWithStyle(topBackgroundImage, "position: absolute; top: " + 0 + "px; left: " + 0 + "px;"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
        this.middleBackgroundImage =
                createImageWithStyle(middleBackgroundImage, "position: absolute; top: " + 50 + "%; left: " + 1 + "px;"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
    }

    @Override
    public void addWest(Widget widget, double size) {
        int width = Window.getClientWidth();
        // as it is not possible to set the width in ui.xml in percentage
        // it has to be set here
        super.addWest(widget, width * 0.6);
    }

    public void initWidget() {
        Element dragger = findElementByClassName(this.getElement(), "gwt-SplitLayoutPanel-HDragger"); //$NON-NLS-1$
        if (dragger != null) {
            dragger.setInnerHTML(
                    template.dragger(
                            topBackgroundImage,
                            middleBackgroundImage,
                            SPLILLER_WIDTH_PX).asString()
                    );
        }
    }

}