Summary
Tag Name: | <tr:breadCrumbs> |
Java Class: | org.apache.myfaces.trinidad.component.core.nav.CoreBreadCrumbs |
Component Type: | org.apache.myfaces.trinidad.CoreBreadCrumbs |
Naming Container: | Yes. When referring to children of this component ("partialTriggers", findComponent(), etc.), you must prefix the child's ID with this component's ID and a colon (':'). |
The links indicating the hierarchy may be added as children or a menu model may be bound to the breadCrumbs component. If a menu model is bound, of class org.apache.myfaces.trinidad.model.MenuModel, the nodes along the focus path will be rendered.
MenuModel extends TreeModel, but it also knows how to go from the current viewId to the focus path. Notice that the menuModel has no special knowledge of page navigation and places no requirements on the nodes that go into the tree. The nodes in the tree are stamped out with the 'nodeStamp' facet, which should contain a commandNavigationItem component, which allows the default actionListener mechanism to be used for page navigation.
Supported Attributes
The "orientation" property may be used to specify the orientation of the breadCrumbs. If the orientation is "horizontal", successive links will be put on the same line. If the orientation is "vertical", successive links will be put on a new line, and indented from their parents. In most cases, the orientation should be horizontal. A vertical breadCrumbs should be used only when the text for the links is known to be very long and likely to cause undesirable scrolling. The default value is horizontal.
Code Example(s)
<tr:breadCrumbs var="foo" value="#{menuModel.model}"> <f:facet name="nodeStamp"> <tr:commandNavigationItem text="#{foo.label}" action="#{foo.action}"/> </f:facet> </tr:breadCrumbs>
Supported Client Events for Client Behaviors
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Events
Type | Phases | Description |
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org.apache.myfaces.trinidad.event.AttributeChangeEvent | Invoke Application, Apply Request Values |
Event delivered to describe an attribute change. Attribute change events are not delivered for any programmatic change to a property. They are only delivered when a renderer changes a property without the application's specific request. An example of an attribute change event might include the width of a column that supported client-side resizing. |
Supported Facets
Name | Description |
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nodeStamp | the component to use to stamp each element in the navigation. A CommandNavigationItem is expected. |
Attributes
Name | Type | Supports EL? | Description |
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attributeChangeListener | javax.el.MethodExpression | Only EL | a method reference to an attribute change listener. Attribute change events are not delivered for any programmatic change to a property. They are only delivered when a renderer changes a property without the application's specific request. An example of an attribute change events might include the width of a column that supported client-side resizing. |
binding | org.apache.myfaces.trinidad.component.core.nav.CoreBreadCrumbs | Only EL | an EL reference that will store the component instance on a bean. This can be used to give programmatic access to a component from a backing bean, or to move creation of the component to a backing bean. |
id | String | No |
the identifier for the component. Every component may be named by a component identifier that must conform to the following rules:
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inlineStyle | String | Yes | the CSS styles to use for this component. |
onclick | String | Yes | an onclick Javascript handler. |
ondblclick | String | Yes | an ondblclick Javascript handler. |
onkeydown | String | Yes | an onkeydown Javascript handler. |
onkeypress | String | Yes | an onkeypress Javascript handler. |
onkeyup | String | Yes | an onkeyup Javascript handler. |
onmousedown | String | Yes | an onmousedown Javascript handler. |
onmousemove | String | Yes | an onmousemove Javascript handler. |
onmouseout | String | Yes | an onmouseout Javascript handler. |
onmouseover | String | Yes | an onmouseover Javascript handler. |
onmouseup | String | Yes | an onmouseup Javascript handler. |
orientation | String | Yes |
Valid Values: horizontal, vertical Default Value: horizontal whether to put links on the same line or indented and on new lines. |
partialTriggers | String[] | Yes |
the IDs of the components that should trigger a partial update.
This component will listen on the trigger components. If one of the trigger components receives an event that will cause it to update in some way, this component will request to be updated too. Separate multiple triggers with a space. e.g., partialTriggers="cmp1 cmp2" Identifiers must account for NamingContainers. You can use a single colon to start the search from the root, or use multiple colons to move up through the NamingContainer. For example, "::" will pop out of this component's naming container (it pops out of itself if it is a naming container), ":::" will pop out of two naming containers, etc. The search for the partialTrigger begins from there. e.g., partialTriggers=":::commandButton1" the search begins for the component with id = commandButton1 after popping out of two naming containers relative to this component. To go into naming containers, you separate the naming containers with ':', e.g.,partialTriggers= "nc1:nc2:nc3:componentId". |
rendered | boolean | Yes |
Default Value: true whether the component is rendered. When set to false, no output will be delivered for this component (the component will not in any way be rendered, and cannot be made visible on the client). If you want to change a component's rendered attribute from false to true using PPR, set the partialTrigger attribute of its parent component so the parent refreshes and in turn will render this component. |
shortDesc | String | Yes | The short description of the component. This text is commonly used by user agents to display tooltip help text. |
styleClass | String | Yes | a CSS style class to use for this component. |
value | Object | Yes | the hierarchy of navigation data - must be of type org.apache.myfaces.trinidad.model.MenuModel |
var | String | No | Name of the EL variable used to reference each element of this collection. Once this component has completed rendering, this variable is removed (or reverted back to its previous value). |
varStatus | String | No |
Name of the EL variable used to reference the varStatus information.
Once this component has completed rendering, this variable is
removed (or reverted back to its previous value).
The VarStatus provides contextual information about the state of the
component to EL expressions. For components that iterate, varStatus
also provides loop counter information. Please see the this
component's documentation for the specific properties on the varStatus.
The common properties on varStatus include:
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