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30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
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Submit.java | 0% | 0% | 0% | 0% |
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// Copyright 2004, 2005 The Apache Software Foundation
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package org.apache.tapestry.form;
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import org.apache.tapestry.IActionListener;
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import org.apache.tapestry.IBinding;
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import org.apache.tapestry.IForm;
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import org.apache.tapestry.IMarkupWriter;
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import org.apache.tapestry.IRequestCycle;
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/**
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* Implements a component that manages an HTML <input type=submit> form element.
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*
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* [<a href="../../../../../ComponentReference/Submit.html">Component Reference</a>]
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*
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* <p>This component is generally only used when the form has multiple
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* submit buttons, and it is important for the application to know
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* which one was pressed. You may also want to use
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* {@link ImageSubmit} which accomplishes much the same thing, but uses
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* a graphic image instead.
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*
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*
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* @author Howard Lewis Ship
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*
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**/
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public abstract class Submit extends AbstractFormComponent{ |
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protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle) |
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{ |
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IForm form = getForm(cycle); |
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boolean rewinding = form.isRewinding();
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String name = form.getElementId(this);
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if (rewinding)
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{ |
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// Don't bother doing anything if disabled.
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if (isDisabled())
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return;
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// How to know which Submit button was actually
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// clicked? When submitted, it produces a request parameter
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// with its name and value (the value serves double duty as both
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// the label on the button, and the parameter value).
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String value = cycle.getRequestContext().getParameter(name); |
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// If the value isn't there, then this button wasn't
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// selected.
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if (value == null) |
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return;
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IBinding selectedBinding = getBinding("selected");
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if (selectedBinding != null) |
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selectedBinding.setObject(getTag()); |
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IActionListener listener = getListener(); |
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if (listener != null) |
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listener.actionTriggered(this, cycle);
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return;
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} |
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writer.beginEmpty("input");
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writer.attribute("type", "submit"); |
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writer.attribute("name", name);
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if (isDisabled())
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writer.attribute("disabled", "disabled"); |
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String label = getLabel(); |
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if (label != null) |
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writer.attribute("value", label);
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renderInformalParameters(writer, cycle); |
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writer.closeTag(); |
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} |
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public abstract String getLabel();
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public abstract boolean isDisabled(); |
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public abstract IActionListener getListener();
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public abstract Object getTag();
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} |
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