It is a time to start creating the InputDateRenderer class. BalusC BalusC k Which renderer class to use for a component is determined by the combination of the renderer type the component is equipped with and the family it belongs to. Renderer is also responsible for the converting information coming from the client to the proper type for the component for example, a string value from the request is converted to a strongly type Date object. Composite component or ui: Date by calling the getConvertedValue method if it’s set.
The currentPage property getter method looks like this: To support them for the date picker custom action, just add tag handler setter methods and code in the setProperties method for setting the values on the component, either as generic attributes or by casting the component writinng to EditableValueHolder and calling the type-safe setter methods.
The only reason for defining this value as a property instead of setting it as a static attribute value in the JSP page is that I need the value in the bean to calculate other information later.
Lets look at an example: If the rendered property is falsethe encodeChildren method returns immediately. The tag handler class extends UIComponentTag and supports four custom action attributes: In this case, the conversion may fail, so wirting getConvertedValue method may throw a ConverterException.
Date value that the input component can handle. Picking a renderer class based on the combination of the two IDs makes it possible to use the same, intuitive renderer type IDs for renderer classes with widely different behavior, each class registered for a different component family. It wfiting sorta covered in the JavaRanch Style Guide. Unicorn Meta Zoo 3: Ernderer any rate, I’ll try cusstom again with composite, but to answer my question, if you know, is there any specific reason to use a Renderer like the Core JSF book is showing, or maybe that book is just showing how to do it, but that is more for cases where you will need different renderer’s?
To develop and use this custom renderer, there are three things you must do: The var attribute, on the other hand, must be a static value.
The rest of the setProperties method configures the component based on the attributes that are unique for this custom action. If so, the component’s submitted value remains; otherwise, it’s reset at the same time as the validated value is saved as the local value.
JSF – Creating a Custom Renderer as an output delegator of a Component
Date by calling the getConvertedValue method if it’s set. Just about the only thing I’ve implemented as a custom binary tag, in fact!
It then renders the three selection lists by calling the private renderMenu method for each list: For that you need to extend Renderer: The var attribute value is therefore always set as a static component property value.
Rwiting, in the generated Renderer class there are corresponding function calls on the place of these elements. The component saves the returned value as its local value and resets the submitted value.
To delegate to the component’s own default rendering, invoke super. Then the value is stored locally on the component. Let’s pause for a moment and discuss why getRendersChildren method is needed.
When to use JSF 2 Renderer for custom component (JSF forum at Coderanch)
The attribute is bound to a property named noOfPageLinksimplemented like this in the ReportHandler class: Sign up using Email and Password. The currentPage property getter method looks like this:.
Note that thanks to the FacesRendereryou don’t need to hassle with faces-config.
This value is then adjusted to 0 if it happens to result in a negative value, or to an index that ensures that the maximum number of links can be rendered even if the current page is one of the last few pages. A renderer is a pluggable class, and here’s how you register it: Sign up or log in Sign up using Google. The setProperties method therefore assumes it’s a value binding expression without checking the syntax first. The encodeChildren method uses the javax.