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| package org.apache.tapestry.form; |
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| import org.apache.hivemind.ApplicationRuntimeException; |
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| import org.apache.hivemind.Location; |
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| import org.apache.tapestry.AbstractComponent; |
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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.IDirect; |
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| import org.apache.tapestry.IForm; |
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| import org.apache.tapestry.IMarkupWriter; |
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| import org.apache.tapestry.IRender; |
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| import org.apache.tapestry.IRequestCycle; |
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| import org.apache.tapestry.RenderRewoundException; |
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| import org.apache.tapestry.Tapestry; |
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| import org.apache.tapestry.TapestryUtils; |
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| import org.apache.tapestry.engine.ActionServiceParameter; |
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| import org.apache.tapestry.engine.DirectServiceParameter; |
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| import org.apache.tapestry.engine.IEngineService; |
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| import org.apache.tapestry.engine.ILink; |
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| import org.apache.tapestry.listener.ListenerInvoker; |
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| import org.apache.tapestry.valid.IValidationDelegate; |
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| import org.apache.tapestry.web.WebResponse; |
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| public abstract class Form extends AbstractComponent implements IForm, IDirect |
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| { |
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| private String _name; |
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| private FormSupport _formSupport; |
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| private class RenderInformalParameters implements IRender |
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| { |
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| public void render(IMarkupWriter writer, IRequestCycle cycle)
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| { |
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| renderInformalParameters(writer, cycle);
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| } |
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| } |
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| private IRender _renderInformalParameters; |
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| public static IForm get(IRequestCycle cycle)
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| { |
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| return (IForm) cycle.getAttribute(ATTRIBUTE_NAME);
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| } |
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| public boolean isRewinding()
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| { |
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| if (!isRendering())
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| throw Tapestry.createRenderOnlyPropertyException(this, "rewinding");
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| return _formSupport.isRewinding();
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| } |
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| public abstract IEngineService getDirectService(); |
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| public abstract IEngineService getActionService(); |
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| public abstract boolean isDirect(); |
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| public boolean getRequiresSession()
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| { |
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| return isStateful();
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| } |
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| public String getElementId(IFormComponent component)
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| { |
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| return _formSupport.getElementId(component, component.getId());
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| } |
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| public String getElementId(IFormComponent component, String baseId)
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| { |
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| return _formSupport.getElementId(component, baseId);
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| } |
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| public String getName()
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| { |
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| return _name;
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| } |
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| protected void prepareForRender(IRequestCycle cycle)
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| { |
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| super.prepareForRender(cycle);
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| TapestryUtils.storeForm(cycle, this);
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| } |
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| protected void cleanupAfterRender(IRequestCycle cycle)
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| { |
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| _formSupport = null;
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| TapestryUtils.removeForm(cycle);
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| IValidationDelegate delegate = getDelegate();
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| if (delegate != null)
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| delegate.setFormComponent(null);
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| super.cleanupAfterRender(cycle);
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| } |
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| protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle)
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| { |
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| String actionId = cycle.getNextActionId();
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| _formSupport = newFormSupport(writer, cycle);
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| if (isRewinding())
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| { |
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| String submitType = _formSupport.rewind();
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| IActionListener listener = findListener(submitType);
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| getListenerInvoker().invokeListener(listener, this, cycle);
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| throw new RenderRewoundException(this);
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| } |
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| String baseName = isDirect() ? constructFormNameForDirectService(cycle)
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| : constructFormNameForActionService(actionId); |
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| _name = baseName + getResponse().getNamespace();
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| if (_renderInformalParameters == null)
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| _renderInformalParameters = new RenderInformalParameters();
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| ILink link = getLink(cycle, actionId);
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| _formSupport.render(getMethod(), _renderInformalParameters, link);
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| } |
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| IActionListener findListener(String mode)
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| { |
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| IActionListener result = null;
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| if (mode.equals(FormConstants.SUBMIT_CANCEL))
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| result = getCancel();
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| else if (mode.equals(FormConstants.SUBMIT_REFRESH))
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| result = getRefresh();
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| if (result == null)
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| result = getListener();
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| return result;
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| } |
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| protected String constructFormNameForActionService(String actionId)
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| { |
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| return "Form" + actionId;
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| } |
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| private String constructFormNameForDirectService(IRequestCycle cycle)
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| { |
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| return cycle.getUniqueId(getId());
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| } |
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| protected FormSupport newFormSupport(IMarkupWriter writer, IRequestCycle cycle)
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| { |
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| return new FormSupportImpl(writer, cycle, this);
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| } |
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| public void addEventHandler(FormEventType type, String functionName)
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| _formSupport.addEventHandler(type, functionName);
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| } |
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| public void rewind(IMarkupWriter writer, IRequestCycle cycle)
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| { |
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| render(writer, cycle);
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| } |
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| public void trigger(IRequestCycle cycle)
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| { |
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| cycle.rewindForm(this);
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| } |
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| private ILink getLink(IRequestCycle cycle, String actionId)
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| if (isDirect())
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| Object parameter = new DirectServiceParameter(this);
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| return getDirectService().getLink(cycle, parameter);
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| } |
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| Object parameter = new ActionServiceParameter(this, actionId);
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| return getActionService().getLink(cycle, parameter);
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| } |
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| public abstract WebResponse getResponse(); |
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| public abstract IValidationDelegate getDelegate(); |
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| public abstract IActionListener getListener(); |
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| public abstract IActionListener getCancel(); |
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| public abstract IActionListener getRefresh(); |
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| public abstract String getMethod(); |
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| public abstract boolean isStateful(); |
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| public void setEncodingType(String encodingType)
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| { |
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| _formSupport.setEncodingType(encodingType);
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| } |
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| public void addHiddenValue(String name, String value)
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| { |
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| _formSupport.addHiddenValue(name, value);
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| } |
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| public void addHiddenValue(String name, String id, String value)
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| { |
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| _formSupport.addHiddenValue(name, id, value);
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| } |
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| public void prerenderField(IMarkupWriter writer, IComponent field, Location location)
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| { |
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| _formSupport.prerenderField(writer, field, location);
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| } |
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| public boolean wasPrerendered(IMarkupWriter writer, IComponent field)
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| { |
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| return _formSupport.wasPrerendered(writer, field);
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| } |
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| public void addDeferredRunnable(Runnable runnable)
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| { |
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| _formSupport.addDeferredRunnable(runnable);
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| } |
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| public abstract ListenerInvoker getListenerInvoker(); |
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| } |