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
015package org.apache.tapestry.wml;
016
017import org.apache.hivemind.HiveMind;
018import org.apache.tapestry.AbstractComponent;
019import org.apache.tapestry.IMarkupWriter;
020import 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
029public 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}