org.wings.plaf.css.ScrollPaneCG Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of wings Show documentation
The newest version!
/*
 * Copyright 2000,2005 wingS development team.
 *
 * This file is part of wingS (http://wingsframework.org).
 *
 * wingS is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1
 * of the License, or (at your option) any later version.
 *
 * Please see COPYING for the complete licence.
 */
package org.wings.plaf.css;

import java.awt.Adjustable;
import java.io.IOException;

import org.wings.*;
import org.wings.style.CSSProperty;
import org.wings.io.Device;
import org.wings.script.JavaScriptDOMListener;
import org.wings.session.ScriptManager;
import org.wings.plaf.css.script.*;

public class ScrollPaneCG extends org.wings.plaf.css.AbstractComponentCG implements org.wings.plaf.ScrollPaneCG {

    private static final long serialVersionUID = 1L;

    @Override
    public void writeInternal(Device device, SComponent component) throws IOException {
        SScrollPane scrollpane = (SScrollPane) component;

        if (scrollpane.getMode() == SScrollPane.MODE_COMPLETE) {
            SDimension preferredSize = scrollpane.getPreferredSize();
            if (preferredSize == null) {
                scrollpane.setPreferredSize(new SDimension(200, 400));
            } else {
                if (preferredSize.getWidthInt() < 0) Utils.setPreferredSize(component, "200", preferredSize.getHeight());
                if (preferredSize.getHeightInt() < 0) Utils.setPreferredSize(component, preferredSize.getWidth(), "400");;
            }

            ScriptManager.getInstance().addScriptListener(new LayoutScrollPaneScript(component.getName()));
            writeContent(device, component);
        } else {
            writeContent(device, component);
        }
        
        Adjustable sb = scrollpane.getVerticalScrollBar();
        SComponent viewport = (SComponent)scrollpane.getScrollable();
        if (viewport != null && sb instanceof SScrollBar) {
            final JavaScriptDOMListener handleMouseWheel = new JavaScriptDOMListener(
                    "DOMMouseScroll",
                    "wingS.scrollbar.handleMouseWheel", '\'' +((SScrollBar)sb).getName()+ '\'', viewport);
            viewport.addScriptListener(handleMouseWheel);            
        }

    }

    public static void writeContent(Device device, SComponent c) throws IOException {
        SScrollPane scrollPane = (SScrollPane) c;

        SDimension preferredSize = scrollPane.getPreferredSize();
        String height = preferredSize != null ? preferredSize.getHeight() : null;
        boolean clientLayout = Utils.isMSIE(scrollPane) && height != null && !"auto".equals(height)
            && scrollPane.getMode() != SScrollPane.MODE_COMPLETE;
        boolean clientFix = Utils.isMSIE(scrollPane) && (height == null || "auto".equals(height))
            && scrollPane.getMode() != SScrollPane.MODE_COMPLETE;

        device.print("");
       
        Utils.renderContainer(device, scrollPane);
        device.print("");
    }
}