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

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/*
 * 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 org.wings.*;
import org.wings.io.Device;
import org.wings.plaf.Update;
import org.wings.script.JavaScriptEvent;
import org.wings.script.JavaScriptListener;

import java.io.IOException;

public final class TextAreaCG extends AbstractComponentCG implements
        org.wings.plaf.TextAreaCG {

    private static final long serialVersionUID = 1L;

    int horizontalOversize = 4;

    public int getHorizontalOversize() {
        return horizontalOversize;
    }

    public void setHorizontalOversize(int horizontalOversize) {
        this.horizontalOversize = horizontalOversize;
    }

    @Override
    public void installCG(SComponent component) {
        super.installCG(component);
        if (Utils.isMSIE(component))
            component.putClientProperty("horizontalOversize", horizontalOversize);
    }

    @Override
    public void writeInternal(final Device device,
                              final SComponent _c)
            throws IOException {
        final STextArea component = (STextArea) _c;

        Object clientProperty = component.getClientProperty("onChangeSubmitListener");
        // If the application developer attached any SDocumentListeners to this
    	// STextArea, the surrounding form gets submitted as soon as the content
        // of this STextArea changed.
        if (component.getDocumentListeners().length > 1) {
        	// We need to test if there are at least 2 document
        	// listeners because each text component registers
        	// itself as a listener of its document as well.
            if (clientProperty == null) {
            	String event = JavaScriptEvent.ON_CHANGE;
            	String code = "wingS.request.sendEvent(event, true, " + !component.isReloadForced() + ");";
                JavaScriptListener javaScriptListener = new JavaScriptListener(event, code);
                component.addScriptListener(javaScriptListener);
                component.putClientProperty("onChangeSubmitListener", javaScriptListener);
            }
        } else if (clientProperty instanceof JavaScriptListener) {
        	component.removeScriptListener((JavaScriptListener) clientProperty);
        	component.putClientProperty("onChangeSubmitListener", null);
        }

        SDimension preferredSize = component.getPreferredSize();
        boolean tableWrapping = Utils.isMSIE(component) && preferredSize != null && "%".equals(preferredSize.getWidthUnit());
        String actualWidth = null;
        if (tableWrapping) {
            actualWidth = preferredSize.getWidth();
            Utils.setPreferredSize(component, "100%", preferredSize.getHeight());
            device.print("");
            device.print("");
        }
        device.print("");
        Utils.quote(device, component.getText(), false, false, false);
        device.print("\n");
        if (tableWrapping) {
            Utils.setPreferredSize(component, actualWidth, preferredSize.getHeight());
            device.print("");
        }
    }

    @Override
    public Update getTextUpdate(STextArea textArea, String text) {
        return new TextUpdate(textArea, text);
    }

    protected static class TextUpdate extends AbstractUpdate {

        private String text;

        public TextUpdate(SComponent component, String text) {
            super(component);
            this.text = text;
        }

        @Override
        public Handler getHandler() {

            UpdateHandler handler = new UpdateHandler("value");
            handler.addParameter(component.getName());
            handler.addParameter(text == null ? "" : text);
            String exception = null;
            if (exception != null) {
                handler.addParameter(exception);
            }
            return handler;
        }

    }

}