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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 | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
ButtonLinkRenderer.java | 83.3% | 90.5% | 100% | 90% |
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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.link;
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import org.apache.hivemind.ApplicationRuntimeException;
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import org.apache.tapestry.IMarkupWriter;
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import org.apache.tapestry.IRequestCycle;
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import org.apache.tapestry.Tapestry;
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import org.apache.tapestry.components.ILinkComponent;
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import org.apache.tapestry.engine.ILink;
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/**
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* An {@link ILinkRenderer} implementation that generates an HTML button.
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* This is particularly useful for implementing cancel buttons.
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*
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* @author Paul Ferraro
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* @since 4.0
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*/
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public class ButtonLinkRenderer implements ILinkRenderer |
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{ |
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public static final ILinkRenderer SHARED_INSTANCE = new ButtonLinkRenderer(); |
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/**
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* @see org.apache.tapestry.link.ILinkRenderer#renderLink(org.apache.tapestry.IMarkupWriter,
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* org.apache.tapestry.IRequestCycle, org.apache.tapestry.components.ILinkComponent)
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*/
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public void renderLink(IMarkupWriter writer, IRequestCycle cycle, ILinkComponent component) |
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{ |
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if (cycle.getAttribute(Tapestry.LINK_COMPONENT_ATTRIBUTE_NAME) != null) |
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{ |
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String message = Tapestry.getMessage("AbstractLinkComponent.no-nesting");
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throw new ApplicationRuntimeException(message, component, null, null); |
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} |
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cycle.setAttribute(Tapestry.LINK_COMPONENT_ATTRIBUTE_NAME, component); |
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ILink link = component.getLink(cycle); |
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writer.begin("button");
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writer.attribute("type", "button"); |
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if (component.isDisabled())
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{ |
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writer.attribute("disabled", "disabled"); |
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} |
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String url = link.getURL(component.getAnchor(), true);
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String target = component.getTarget(); |
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String onclick = (target == null) ? getScript(url) : getScript(url, target);
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writer.attribute("onclick", onclick);
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component.renderAdditionalAttributes(writer, cycle); |
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IMarkupWriter wrappedWriter = writer.getNestedWriter(); |
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component.renderBody(wrappedWriter, cycle); |
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wrappedWriter.close(); |
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writer.end(); |
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cycle.removeAttribute(Tapestry.LINK_COMPONENT_ATTRIBUTE_NAME); |
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} |
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/**
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* Generates the onclick event handler that opens the specified url in the current window.
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* @param url the url generated by this link
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* @return a JavaScript onclick event handler
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*/
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protected String getScript(String url)
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{ |
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return "window.location='" + url + "'"; |
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} |
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/**
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* Generates the onclick event handler that opens the specified url in the specified window or frame.
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* @param url the url generated by this link
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* @param target the name of the target window or frame
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* @return a JavaScript onclick event handler
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*/
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protected String getScript(String url, String target)
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{ |
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return "window.open('" + url + "','" + target + "')"; |
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} |
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} |
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