Clover coverage report - Code Coverage for tapestry release 4.0-beta-2
Coverage timestamp: Sat Jul 9 2005 22:02:17 EDT
file stats: LOC: 98   Methods: 3
NCLOC: 44   Classes: 1
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 Source file Conditionals Statements Methods TOTAL
ButtonLinkRenderer.java 83.3% 90.5% 100% 90%
coverage coverage
 1    // Copyright 2004, 2005 The Apache Software Foundation
 2    //
 3    // Licensed under the Apache License, Version 2.0 (the "License");
 4    // you may not use this file except in compliance with the License.
 5    // You may obtain a copy of the License at
 6    //
 7    // http://www.apache.org/licenses/LICENSE-2.0
 8    //
 9    // Unless required by applicable law or agreed to in writing, software
 10    // distributed under the License is distributed on an "AS IS" BASIS,
 11    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 12    // See the License for the specific language governing permissions and
 13    // limitations under the License.
 14   
 15    package org.apache.tapestry.link;
 16   
 17    import org.apache.hivemind.ApplicationRuntimeException;
 18    import org.apache.tapestry.IMarkupWriter;
 19    import org.apache.tapestry.IRequestCycle;
 20    import org.apache.tapestry.Tapestry;
 21    import org.apache.tapestry.components.ILinkComponent;
 22    import org.apache.tapestry.engine.ILink;
 23   
 24    /**
 25    * An {@link ILinkRenderer} implementation that generates an HTML button.
 26    * This is particularly useful for implementing cancel buttons.
 27    *
 28    * @author Paul Ferraro
 29    * @since 4.0
 30    */
 31    public class ButtonLinkRenderer implements ILinkRenderer
 32    {
 33    public static final ILinkRenderer SHARED_INSTANCE = new ButtonLinkRenderer();
 34   
 35    /**
 36    * @see org.apache.tapestry.link.ILinkRenderer#renderLink(org.apache.tapestry.IMarkupWriter,
 37    * org.apache.tapestry.IRequestCycle, org.apache.tapestry.components.ILinkComponent)
 38    */
 39  3 public void renderLink(IMarkupWriter writer, IRequestCycle cycle, ILinkComponent component)
 40    {
 41  3 if (cycle.getAttribute(Tapestry.LINK_COMPONENT_ATTRIBUTE_NAME) != null)
 42    {
 43  0 String message = Tapestry.getMessage("AbstractLinkComponent.no-nesting");
 44  0 throw new ApplicationRuntimeException(message, component, null, null);
 45    }
 46   
 47  3 cycle.setAttribute(Tapestry.LINK_COMPONENT_ATTRIBUTE_NAME, component);
 48   
 49  3 ILink link = component.getLink(cycle);
 50   
 51  3 writer.begin("button");
 52  3 writer.attribute("type", "button");
 53   
 54  3 if (component.isDisabled())
 55    {
 56  1 writer.attribute("disabled", "disabled");
 57    }
 58   
 59  3 String url = link.getURL(component.getAnchor(), true);
 60  3 String target = component.getTarget();
 61  3 String onclick = (target == null) ? getScript(url) : getScript(url, target);
 62   
 63  3 writer.attribute("onclick", onclick);
 64   
 65  3 component.renderAdditionalAttributes(writer, cycle);
 66   
 67  3 IMarkupWriter wrappedWriter = writer.getNestedWriter();
 68   
 69  3 component.renderBody(wrappedWriter, cycle);
 70   
 71  3 wrappedWriter.close();
 72   
 73  3 writer.end();
 74   
 75  3 cycle.removeAttribute(Tapestry.LINK_COMPONENT_ATTRIBUTE_NAME);
 76    }
 77   
 78    /**
 79    * Generates the onclick event handler that opens the specified url in the current window.
 80    * @param url the url generated by this link
 81    * @return a JavaScript onclick event handler
 82    */
 83  2 protected String getScript(String url)
 84    {
 85  2 return "window.location='" + url + "'";
 86    }
 87   
 88    /**
 89    * Generates the onclick event handler that opens the specified url in the specified window or frame.
 90    * @param url the url generated by this link
 91    * @param target the name of the target window or frame
 92    * @return a JavaScript onclick event handler
 93    */
 94  1 protected String getScript(String url, String target)
 95    {
 96  1 return "window.open('" + url + "','" + target + "')";
 97    }
 98    }