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| package org.apache.tapestry.callback; |
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| import org.apache.hivemind.ApplicationRuntimeException; |
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| import org.apache.hivemind.util.Defense; |
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| import org.apache.tapestry.IComponent; |
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| import org.apache.tapestry.IDirect; |
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| import org.apache.tapestry.IPage; |
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| import org.apache.tapestry.IRequestCycle; |
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| public class DirectCallback implements ICallback |
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| { |
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| private static final long serialVersionUID = -8888847655917503471L; |
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| private String _pageName; |
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| private String _componentIdPath; |
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| private Object[] _parameters; |
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| public String toString()
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| { |
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| StringBuffer buffer = new StringBuffer("DirectCallback[");
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| buffer.append(_pageName);
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| buffer.append('/');
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| buffer.append(_componentIdPath);
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| if (_parameters != null)
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| { |
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| for (int i = 0; i < _parameters.length; i++)
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| { |
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| buffer.append(i == 0 ? " " : ", ");
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| buffer.append(_parameters[i]);
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| } |
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| } |
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| buffer.append(']');
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| return buffer.toString();
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| } |
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| public DirectCallback(IDirect component, Object[] parameters)
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| { |
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| Defense.notNull(component, "component");
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| _pageName = component.getPage().getPageName();
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| _componentIdPath = component.getIdPath();
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| _parameters = parameters;
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| } |
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| public void performCallback(IRequestCycle cycle)
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| { |
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| IPage page = cycle.getPage(_pageName);
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| IComponent component = page.getNestedComponent(_componentIdPath);
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| IDirect direct = null;
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| try
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| { |
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| direct = (IDirect) component;
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| } |
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| catch (ClassCastException ex) |
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| { |
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| throw new ApplicationRuntimeException(CallbackMessages.componentNotDirect(component),
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| component, null, ex); |
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| } |
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| cycle.setListenerParameters(_parameters);
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| direct.trigger(cycle);
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| } |
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| } |