    001    // Copyright 2007, 2008, 2011 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.tapestry5.corelib.components;
    016
    017    import org.apache.tapestry5.MarkupWriter;
    018    import org.apache.tapestry5.corelib.base.AbstractTextField;
    019
    020    /**
    021     * A version of {@link TextField}, but rendered out as an &lt;input type="password"&gt; element. Further, the output
    022     * value for a PasswordField is always blank.  When the value provided to the PasswordField is blank, it does not update
    023     * its property (care should be taken that the "required" validator not be used in that case).
    024     * <p/>
    025     * Includes the <code>size</code> attribute, if a {@link org.apache.tapestry5.beaneditor.Width} annotation is present on
    026     * the property bound to the value parameter.
    027     *
    028     * @tapestrydoc
    029     * @see Form
    030     * @see TextField
    031     * @see TextArea
    032     */
    033    public class PasswordField extends AbstractTextField
    034    {
    035
    036        @Override
    037        protected final void writeFieldTag(MarkupWriter writer, String value)
    038        {
    039            writer.element("input",
    040
    041                           "type", "password",
    042
    043                           "name", getControlName(),
    044
    045                           "id", getClientId(),
    046
    047                           "value", "",
    048
    049                           "size", getWidth());
    050        }
    051
    052
    053        final void afterRender(MarkupWriter writer)
    054        {
    055            writer.end(); // input
    056        }
    057
    058        /**
    059         * Returns true, blank input should be ignored and not cause an update to the server-side property bound to the
    060         * value parameter.
    061         *
    062         * @return true
    063         */
    064        @Override
    065        protected boolean ignoreBlankInput()
    066        {
    067            return true;
    068        }
    069    }