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package org.apache.tapestry.engine; |
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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.*; |
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import org.apache.tapestry.event.BrowserEvent; |
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import org.apache.tapestry.services.LinkFactory; |
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import org.apache.tapestry.services.ResponseRenderer; |
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import org.apache.tapestry.services.ServiceConstants; |
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import org.apache.tapestry.web.WebRequest; |
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import org.apache.tapestry.web.WebSession; |
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import java.io.IOException; |
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import java.util.HashMap; |
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import java.util.Map; |
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39 | 0 | public class DirectEventService implements IEngineService |
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{ |
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private ResponseRenderer _responseRenderer; |
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private LinkFactory _linkFactory; |
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private WebRequest _request; |
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private IRequestCycle _requestCycle; |
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public ILink getLink(boolean post, Object parameter) |
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{ |
55 | 0 | Defense.isAssignable(parameter, DirectEventServiceParameter.class, "parameter"); |
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57 | 0 | DirectEventServiceParameter dsp = (DirectEventServiceParameter) parameter; |
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59 | 0 | IComponent component = dsp.getDirect(); |
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69 | 0 | IPage activePage = _requestCycle.getPage(); |
70 | 0 | IPage componentPage = component.getPage(); |
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72 | 0 | Map parameters = new HashMap(); |
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74 | 0 | boolean stateful = _request.getSession(false) != null; |
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76 | 0 | parameters.put(ServiceConstants.PAGE, activePage.getPageName()); |
77 | 0 | parameters.put(ServiceConstants.COMPONENT, component.getIdPath()); |
78 | 0 | parameters.put(ServiceConstants.CONTAINER, componentPage == activePage ? null : componentPage.getPageName()); |
79 | 0 | parameters.put(ServiceConstants.SESSION, stateful ? "T" : null); |
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81 | 0 | if (dsp.getUpdateParts() != null && dsp.getUpdateParts().length > 0) |
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{ |
83 | 0 | parameters.put(ServiceConstants.UPDATE_PARTS, dsp.getUpdateParts()); |
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} |
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86 | 0 | if (dsp.isJSON()) |
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{ |
88 | 0 | parameters.put("json", String.valueOf(dsp.isJSON())); |
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} |
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91 | 0 | parameters.put(ServiceConstants.PARAMETER, dsp.getServiceParameters()); |
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93 | 0 | return _linkFactory.constructLink(this, post, parameters, true); |
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} |
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public void service(IRequestCycle cycle) throws IOException |
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{ |
98 | 0 | String componentId = cycle.getParameter(ServiceConstants.COMPONENT); |
99 | 0 | String componentPageName = cycle.getParameter(ServiceConstants.CONTAINER); |
100 | 0 | String activePageName = cycle.getParameter(ServiceConstants.PAGE); |
101 | 0 | boolean activeSession = cycle.getParameter(ServiceConstants.SESSION) != null; |
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103 | 0 | IPage page = cycle.getPage(activePageName); |
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105 | 0 | cycle.activate(page); |
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107 | 0 | IPage componentPage = componentPageName == null ? page : cycle.getPage(componentPageName); |
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109 | 0 | IComponent component = componentPage.getNestedComponent(componentId); |
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111 | 0 | IDirectEvent direct = null; |
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try |
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{ |
115 | 0 | direct = (IDirectEvent) component; |
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} |
117 | 0 | catch (ClassCastException ex) |
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{ |
119 | 0 | throw new ApplicationRuntimeException(EngineMessages.wrongComponentType( |
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component, |
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IDirectEvent.class), component, null, ex); |
122 | 0 | } |
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127 | 0 | if (activeSession && direct.isStateful()) |
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{ |
129 | 0 | WebSession session = _request.getSession(false); |
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131 | 0 | if (session == null || session.isNew()) |
132 | 0 | throw new StaleSessionException(EngineMessages.requestStateSession(direct), componentPage); |
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} |
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135 | 0 | Object[] parameters = _linkFactory.extractListenerParameters(cycle); |
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137 | 0 | triggerComponent(cycle, direct, parameters); |
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142 | 0 | _responseRenderer.renderResponse(cycle); |
143 | 0 | } |
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protected void triggerComponent(IRequestCycle cycle, IDirectEvent direct, Object[] parameters) |
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{ |
149 | 0 | if (!BrowserEvent.hasBrowserEvent(cycle)) |
150 | 0 | throw new ApplicationRuntimeException(EngineMessages.noBrowserEvent()); |
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152 | 0 | BrowserEvent event = new BrowserEvent(cycle); |
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154 | 0 | Object[] parms = new Object[parameters.length + 1]; |
155 | 0 | System.arraycopy(parameters, 0, parms, 0, parameters.length); |
156 | 0 | parms[parms.length - 1] = event; |
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158 | 0 | cycle.setListenerParameters(parms); |
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160 | 0 | direct.triggerEvent(cycle, event); |
161 | 0 | } |
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public String getName() |
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{ |
165 | 0 | return Tapestry.DIRECT_EVENT_SERVICE; |
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} |
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public void setResponseRenderer(ResponseRenderer responseRenderer) |
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{ |
171 | 0 | _responseRenderer = responseRenderer; |
172 | 0 | } |
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public void setLinkFactory(LinkFactory linkFactory) |
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{ |
177 | 0 | _linkFactory = linkFactory; |
178 | 0 | } |
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public void setRequest(WebRequest request) |
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{ |
183 | 0 | _request = request; |
184 | 0 | } |
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public void setRequestCycle(IRequestCycle requestCycle) |
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{ |
189 | 0 | _requestCycle = requestCycle; |
190 | 0 | } |
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} |