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package org.apache.tapestry.internal.event.impl; |
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import edu.emory.mathcs.backport.java.util.concurrent.ConcurrentHashMap; |
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import org.apache.hivemind.util.Defense; |
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import org.apache.tapestry.IActionListener; |
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import org.apache.tapestry.IComponent; |
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import org.apache.tapestry.IForm; |
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import org.apache.tapestry.IRequestCycle; |
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import org.apache.tapestry.event.BrowserEvent; |
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import org.apache.tapestry.event.ResetEventListener; |
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import org.apache.tapestry.form.FormSupport; |
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import org.apache.tapestry.internal.event.ComponentEventProperty; |
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import org.apache.tapestry.internal.event.EventBoundListener; |
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import org.apache.tapestry.internal.event.IComponentEventInvoker; |
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import org.apache.tapestry.listener.ListenerInvoker; |
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import org.apache.tapestry.spec.IComponentSpecification; |
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import org.apache.tapestry.spec.IEventListener; |
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import java.util.*; |
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public class ComponentEventInvoker implements IComponentEventInvoker, ResetEventListener |
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{ |
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static final ComponentEventProperty[] EMPTY_PROPERTIES = new ComponentEventProperty[0]; |
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private Map _components = new ConcurrentHashMap(); |
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private Map _formComponents = new ConcurrentHashMap(); |
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private ListenerInvoker _invoker; |
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private Map _propertyCache = new ConcurrentHashMap(); |
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public void invokeListeners(IComponent component, IRequestCycle cycle, BrowserEvent event) |
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{ |
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Defense.notNull(component, "component"); |
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Defense.notNull(cycle, "cycle"); |
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Defense.notNull(event, "event"); |
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invokeComponentListeners(component, cycle, event); |
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invokeElementListeners(component, cycle, event); |
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} |
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public void invokeFormListeners(FormSupport formSupport, final IRequestCycle cycle, final BrowserEvent event) |
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{ |
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Defense.notNull(formSupport, "formSupport"); |
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Defense.notNull(cycle, "cycle"); |
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Defense.notNull(event, "event"); |
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IForm form = formSupport.getForm(); |
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String formIdPath = form.getExtendedId(); |
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String targetId = (String)event.getTarget().get("id"); |
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String componentId = event.getComponentId(); |
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if (targetId == null || componentId == null) |
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return; |
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List comps = getFormEventListeners(formIdPath); |
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if (comps == null) |
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return; |
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boolean disableFocus = false; |
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for (int i=0; i < comps.size(); i++) |
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{ |
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IComponentSpecification spec = (IComponentSpecification)comps.get(i); |
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EventBoundListener[] listeners = spec.getFormEvents(formIdPath, event); |
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IComponent target = null; |
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if (spec.isPageSpecification()) |
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{ |
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target = form.getPage(); |
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} else { |
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target = findComponent(form.getPage().getComponents().values(), spec); |
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} |
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for (int e=0; e < listeners.length; e++) |
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{ |
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if (!listeners[e].getComponentId().endsWith(componentId)) |
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continue; |
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if (!listeners[e].isValidateForm()) |
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{ |
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form.getDelegate().clearErrors(); |
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} |
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if (!disableFocus && !listeners[e].shouldFocusForm()) |
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disableFocus = true; |
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form.addDeferredRunnable( |
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new FormRunnable(target.getListeners().getListener(listeners[e].getMethodName()), |
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target, |
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cycle)); |
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} |
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} |
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if (disableFocus) |
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{ |
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cycle.disableFocus(); |
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} |
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} |
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void invokeComponentListeners(IComponent component, IRequestCycle cycle, BrowserEvent event) |
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{ |
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String idPath = component.getExtendedId(); |
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List listeners = getEventListeners(idPath); |
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if (listeners == null) |
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return; |
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for (int i = 0; i < listeners.size(); i++) |
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{ |
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IComponentSpecification listener = (IComponentSpecification)listeners.get(i); |
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IComponent target; |
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ComponentEventProperty props; |
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if (listener.isPageSpecification()) |
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{ |
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target = component.getPage(); |
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props = listener.getComponentEvents(idPath); |
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} else |
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{ |
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target = findComponent(component.getPage().getComponents().values(), listener); |
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props = target.getSpecification().getComponentEvents(idPath); |
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} |
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if (props == null) |
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continue; |
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List clisteners = props.getEventListeners(event.getName()); |
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for (int e=0; e < clisteners.size(); e++) |
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{ |
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EventBoundListener eventListener = (EventBoundListener)clisteners.get(e); |
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_invoker.invokeListener(target.getListeners().getListener(eventListener.getMethodName()), target, cycle); |
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} |
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} |
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} |
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void invokeElementListeners(IComponent component, IRequestCycle cycle, BrowserEvent event) |
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{ |
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String targetId = (String)event.getTarget().get("id"); |
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if (targetId == null) |
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return; |
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ComponentEventProperty prop = component.getSpecification().getElementEvents(targetId); |
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if (prop == null) |
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return; |
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List listeners = prop.getEventListeners(event.getName()); |
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for (int i=0; i < listeners.size(); i++) |
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{ |
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EventBoundListener listener = (EventBoundListener)listeners.get(i); |
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_invoker.invokeListener(component.getListeners().getListener(listener.getMethodName()), component, cycle); |
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} |
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} |
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IComponent findComponent(Collection comps, IComponentSpecification spec) |
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{ |
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IComponent ret = null; |
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Iterator it = comps.iterator(); |
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while (it.hasNext()) |
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{ |
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IComponent comp = (IComponent)it.next(); |
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if (comp.getSpecification().equals(spec)) |
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{ |
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ret = comp; |
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break; |
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} |
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ret = findComponent(comp.getComponents().values(), spec); |
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if (ret != null) |
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break; |
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} |
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return ret; |
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} |
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class FormRunnable implements Runnable { |
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private IActionListener _listener; |
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private IComponent _component; |
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private IRequestCycle _cycle; |
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public FormRunnable(IActionListener listener, IComponent comp, IRequestCycle cycle) |
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{ |
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_listener = listener; |
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_component = comp; |
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_cycle = cycle; |
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} |
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public void run() |
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{ |
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_invoker.invokeListener(_listener, _component, _cycle); |
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} |
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} |
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public void addEventListener(String componentId, IComponentSpecification listener) |
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{ |
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List listeners = (List)_components.get(componentId); |
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if (listeners == null) |
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{ |
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listeners = new ArrayList(); |
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_components.put(componentId, listeners); |
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} |
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if (!listeners.contains(listener)) |
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{ |
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listeners.add(listener); |
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} |
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_propertyCache.remove(componentId); |
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} |
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public List getEventListeners(String componentId) |
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{ |
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if (componentId == null) |
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return null; |
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return (List)_components.get(componentId); |
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} |
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public ComponentEventProperty[] getEventPropertyListeners(String componentIdPath) |
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{ |
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if (componentIdPath == null) |
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return EMPTY_PROPERTIES; |
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ComponentEventProperty[] ret = (ComponentEventProperty[])_propertyCache.get(componentIdPath); |
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if (ret != null) |
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return ret; |
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List listeners = getEventListeners(componentIdPath); |
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if (listeners == null || listeners.size() < 1) |
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return EMPTY_PROPERTIES; |
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List props = new ArrayList(); |
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for (int i=0; i < listeners.size(); i++) |
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{ |
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IEventListener listener = (IEventListener)listeners.get(i); |
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props.add(listener.getComponentEvents(componentIdPath)); |
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} |
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ret = (ComponentEventProperty[])props.toArray(new ComponentEventProperty[props.size()]); |
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_propertyCache.put(componentIdPath, ret); |
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return ret; |
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} |
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public void addFormEventListener(String formId, IComponentSpecification listener) |
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{ |
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List listeners = (List)_formComponents.get(formId); |
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if (listeners == null) |
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{ |
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listeners = new ArrayList(); |
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_formComponents.put(formId, listeners); |
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} |
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if (!listeners.contains(listener)) |
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{ |
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listeners.add(listener); |
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} |
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} |
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public List getFormEventListeners(String formId) |
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{ |
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if (formId == null) |
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return null; |
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return (List)_formComponents.get(formId); |
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} |
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public void resetEventDidOccur() |
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{ |
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_components.clear(); |
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_formComponents.clear(); |
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_propertyCache.clear(); |
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} |
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public void setInvoker(ListenerInvoker invoker) |
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{ |
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_invoker = invoker; |
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} |
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} |