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Pageflow (JBoss Seam API Documentation) - JBoss Seam 1.2.0 API 英文版文档

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org.jboss.seam.core
Class Pageflow

java.lang.Object
  org.jboss.seam.core.AbstractMutable
      org.jboss.seam.core.Pageflow

All Implemented Interfaces:

Serializable, Mutable

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@Scope(value=CONVERSATION)
@PerNestedConversation
@Name(value="org.jboss.seam.core.pageflow")
@Intercept(value=NEVER)
@Install(dependencies="org.jboss.seam.core.jbpm",
         precedence=0)
public class Pageflow
extends AbstractMutable
implements Serializable

A Seam component that manages the current jBPM ProcessInstance used for pageflow.

Author:

Gavin King

See Also:

Serialized Form

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Constructor Summary
Pageflow()

 

Method Summary
void	begin(String pageflowDefinitionName)           Begin executing a pageflow.
String	getNoConversationViewId(String pageflowName, String pageflowNodeName)
org.jbpm.graph.def.Node	getNode()           Get the current Node of the pageflow.
Page	getPage()           Get the current Page of the pageflow.
int	getPageflowCounter()           Get the current counter value, used for detecting illegal use of the backbutton.
protected  org.jbpm.graph.def.ProcessDefinition	getPageflowProcessDefinition(String pageflowName)
String	getPageViewId()           Get the JSF view id of the current page in the pageflow.
org.jbpm.graph.exe.ProcessInstance	getProcessInstance()
protected  String	getViewId(Page page)           Allows the user to extend this class and use some logical naming of pages other than the JSF view id in their pageflow.
boolean	hasDefaultTransition()           Does the current node have a default transition?
boolean	hasTransition(String outcome)
protected  void	illegalNavigation()           Add a message to indicate that illegal navigation occurred.
static Pageflow	instance()
boolean	isInProcess()
protected  void	navigate(javax.faces.context.FacesContext context)           Navigate to the current page.
void	navigate(javax.faces.context.FacesContext context, String outcome)           Given the JSF action outcome, perform navigation according to the current pageflow.
void	processEvents(String type)           Process events defined in the pageflow.
protected  void	redirect(Page page)           Redirect to the Page.
protected  void	render(javax.faces.context.FacesContext context, Page page)           Proceed to render the Page.
void	reposition(String nodeName)           Reposition the pageflow at the named node.
void	setProcessInstance(org.jbpm.graph.exe.ProcessInstance processInstance)
String	toString()
void	validatePageflow()           Check that the current state of the pageflow matches what is expected by the faces request.

 

Methods inherited from class org.jboss.seam.core.AbstractMutable
clearDirty, setDirty, setDirty

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

 

Constructor Detail

Pageflow

public Pageflow()

Method Detail

isInProcess

public boolean isInProcess()

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getProcessInstance

public org.jbpm.graph.exe.ProcessInstance getProcessInstance()

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setProcessInstance

public void setProcessInstance(org.jbpm.graph.exe.ProcessInstance processInstance)

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instance

public static Pageflow instance()

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getPageflowCounter

public int getPageflowCounter()

Get the current counter value, used for detecting illegal use of the backbutton.

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validatePageflow

public void validatePageflow()

Check that the current state of the pageflow matches what is expected by the faces request.

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illegalNavigation

protected void illegalNavigation()

Add a message to indicate that illegal navigation occurred. May be overridden by user to perform special processing.

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getNode

public org.jbpm.graph.def.Node getNode()

Get the current Node of the pageflow.

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reposition

public void reposition(String nodeName)

Reposition the pageflow at the named node.

Parameters:

nodeName - the name of a node

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getPage

public Page getPage()

Get the current Page of the pageflow.

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navigate

protected void navigate(javax.faces.context.FacesContext context)

Navigate to the current page.

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redirect

protected void redirect(Page page)

Redirect to the Page.

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render

protected void render(javax.faces.context.FacesContext context,
                      Page page)

Proceed to render the Page.

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getViewId

protected String getViewId(Page page)

Allows the user to extend this class and use some logical naming of pages other than the JSF view id in their pageflow.

Parameters:

page - the Page object

Returns:

a JSF view id

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getPageViewId

public String getPageViewId()

Get the JSF view id of the current page in the pageflow.

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hasDefaultTransition

public boolean hasDefaultTransition()

Does the current node have a default transition?

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hasTransition

public boolean hasTransition(String outcome)

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navigate

public void navigate(javax.faces.context.FacesContext context,
                     String outcome)

Given the JSF action outcome, perform navigation according to the current pageflow.

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processEvents

public void processEvents(String type)

Process events defined in the pageflow.

Parameters:

type - one of: "process-validations", "update-model-values", "invoke-application", "render-response"

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begin

public void begin(String pageflowDefinitionName)

Begin executing a pageflow.

Parameters:

pageflowDefinitionName - the name of the pageflow definition

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getNoConversationViewId

public String getNoConversationViewId(String pageflowName,
                                      String pageflowNodeName)

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getPageflowProcessDefinition

protected org.jbpm.graph.def.ProcessDefinition getPageflowProcessDefinition(String pageflowName)

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toString

public String toString()

Overrides:

toString in class Object

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