001    // Copyright 2004, 2005 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry.wml;
016    
017    import org.apache.hivemind.HiveMind;
018    import org.apache.tapestry.AbstractComponent;
019    import org.apache.tapestry.IMarkupWriter;
020    import org.apache.tapestry.IRequestCycle;
021    
022    /**
023     * The Input element specifies a text entry object.
024     * 
025     * @author David Solis
026     * @since 3.0
027     */
028    
029    public abstract class Input extends AbstractComponent
030    {
031    
032        /**
033         * @see AbstractComponent#renderComponent(IMarkupWriter, IRequestCycle)
034         */
035    
036        protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle)
037        {
038            boolean render = !cycle.isRewinding();
039    
040            if (render)
041            {
042                writer.beginEmpty("input");
043    
044                writer.attribute("type", isHidden() ? "password" : "text");
045    
046                writer.attribute("name", getName());
047    
048                String title = getTitle();
049                if (HiveMind.isNonBlank(title))
050                    writer.attribute("title", title);
051    
052                String format = getFormat();
053                if (HiveMind.isNonBlank(format))
054                    writer.attribute("format", format);
055    
056                boolean emptyok = isEmptyok();
057                if (emptyok != false)
058                    writer.attribute("emptyok", emptyok);
059    
060                renderInformalParameters(writer, cycle);
061    
062                String value = getValue();
063                if (HiveMind.isNonBlank(value))
064                    writer.attribute("value", value);
065    
066                writer.closeTag();
067            }
068        }
069    
070        public abstract String getTitle();
071    
072        public abstract String getName();
073    
074        public abstract String getFormat();
075    
076        public abstract boolean isHidden();
077    
078        public abstract boolean isEmptyok();
079    
080        public abstract String getValue();
081    
082    }