org.apache.myfaces.renderkit.html.HtmlTextareaRendererBase Maven / Gradle / Ivy

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The MyFaces Commons Subproject provides base classes for usage in both the MyFaces implementation and the MyFaces Tomahawk components. This is also a general set of utility classes for usage in your JSF projects independent of the implementation you might be deciding upon.

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/*
 * Copyright 2004 The Apache Software Foundation.
 *
 * 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 org.apache.myfaces.renderkit.html;

import org.apache.myfaces.renderkit.JSFAttr;
import org.apache.myfaces.renderkit.RendererUtils;

import javax.faces.component.UIComponent;
import javax.faces.component.UIInput;
import javax.faces.component.UIOutput;
import javax.faces.component.html.HtmlInputTextarea;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.faces.convert.ConverterException;
import java.io.IOException;


/**
 * @author Manfred Geiler (latest modification by $Author: skitching $)
 * @author Anton Koinov
 * @version $Revision: 349370 $ $Date: 2005-11-28 05:01:41 +0000 (Mon, 28 Nov 2005) $
 */
public class HtmlTextareaRendererBase
        extends HtmlRenderer
{
    public void encodeEnd(FacesContext facesContext, UIComponent uiComponent)
            throws IOException
    {
        RendererUtils.checkParamValidity(facesContext, uiComponent, UIInput.class);

        encodeTextArea(facesContext, uiComponent);

    }

    protected void encodeTextArea(FacesContext facesContext, UIComponent uiComponent) throws IOException {
        ResponseWriter writer = facesContext.getResponseWriter();
        writer.startElement(HTML.TEXTAREA_ELEM, uiComponent);

        String clientId = uiComponent.getClientId(facesContext);
        writer.writeAttribute(HTML.NAME_ATTR, clientId, null);
        HtmlRendererUtils.writeIdIfNecessary(writer, uiComponent, facesContext);

        HtmlRendererUtils.renderHTMLAttributes(writer, uiComponent, HTML.TEXTAREA_PASSTHROUGH_ATTRIBUTES_WITHOUT_DISABLED);
        if (isDisabled(facesContext, uiComponent))
        {
            writer.writeAttribute(HTML.DISABLED_ATTR, Boolean.TRUE, null);
        }

        String strValue = RendererUtils.getStringValue(facesContext, uiComponent);
        writer.writeText(strValue, JSFAttr.VALUE_ATTR);

        writer.endElement(HTML.TEXTAREA_ELEM);
    }

    protected boolean isDisabled(FacesContext facesContext, UIComponent uiComponent)
    {
        //TODO: overwrite in extended HtmlTextareaRenderer and check for enabledOnUserRole
        if (uiComponent instanceof HtmlInputTextarea)
        {
            return ((HtmlInputTextarea)uiComponent).isDisabled();
        }
        else
        {
            return RendererUtils.getBooleanAttribute(uiComponent, HTML.DISABLED_ATTR, false);
        }
    }

    public void decode(FacesContext facesContext, UIComponent component)
    {
        RendererUtils.checkParamValidity(facesContext, component, UIInput.class);
        HtmlRendererUtils.decodeUIInput(facesContext, component);
    }

    public Object getConvertedValue(FacesContext facesContext, UIComponent uiComponent, Object submittedValue) throws ConverterException
    {
        RendererUtils.checkParamValidity(facesContext, uiComponent, UIOutput.class);
        return RendererUtils.getConvertedUIOutputValue(facesContext,
                                                       (UIOutput)uiComponent,
                                                       submittedValue);
    }

}