org.springframework.web.servlet.tags.form

Class AbstractCheckedElementTag

java.lang.Object

TagSupport

org.springframework.web.servlet.tags.RequestContextAwareTag

org.springframework.web.servlet.tags.HtmlEscapingAwareTag

org.springframework.web.servlet.tags.form.AbstractFormTag

org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag

org.springframework.web.servlet.tags.form.AbstractHtmlElementTag

org.springframework.web.servlet.tags.form.AbstractHtmlInputElementTag

org.springframework.web.servlet.tags.form.AbstractCheckedElementTag

All Implemented Interfaces:

EditorAwareTag

Direct Known Subclasses:

AbstractMultiCheckedElementTag, AbstractSingleCheckedElementTag

public abstract class AbstractCheckedElementTag
extends AbstractHtmlInputElementTag

Abstract base class to provide common methods for implementing databinding-aware JSP tags for rendering an HTML 'input' element with a 'type' of 'checkbox' or 'radio'.

Since:

2.5

Author:

Thomas Risberg, Juergen Hoeller, Rossen Stoyanchev

Field Summary

Fields inherited from class org.springframework.web.servlet.tags.form.AbstractHtmlInputElementTag

ACCESSKEY_ATTRIBUTE, DISABLED_ATTRIBUTE, ONBLUR_ATTRIBUTE, ONCHANGE_ATTRIBUTE, ONFOCUS_ATTRIBUTE, READONLY_ATTRIBUTE

Fields inherited from class org.springframework.web.servlet.tags.form.AbstractHtmlElementTag

CLASS_ATTRIBUTE, DIR_ATTRIBUTE, LANG_ATTRIBUTE, ONCLICK_ATTRIBUTE, ONDBLCLICK_ATTRIBUTE, ONKEYDOWN_ATTRIBUTE, ONKEYPRESS_ATTRIBUTE, ONKEYUP_ATTRIBUTE, ONMOUSEDOWN_ATTRIBUTE, ONMOUSEMOVE_ATTRIBUTE, ONMOUSEOUT_ATTRIBUTE, ONMOUSEOVER_ATTRIBUTE, ONMOUSEUP_ATTRIBUTE, STYLE_ATTRIBUTE, TABINDEX_ATTRIBUTE, TITLE_ATTRIBUTE

Fields inherited from class org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag

NESTED_PATH_VARIABLE_NAME

Fields inherited from class org.springframework.web.servlet.tags.RequestContextAwareTag

logger, REQUEST_CONTEXT_PAGE_ATTRIBUTE

Constructor Summary

Constructors

Constructor and Description
AbstractCheckedElementTag()

Method Summary

Modifier and Type	Method and Description
protected java.lang.String	autogenerateId() Return a unique ID for the bound name within the current PageContext.
protected abstract java.lang.String	getInputType() Return the type of the HTML input element to generate: "checkbox" or "radio".
private boolean	isOptionSelected(java.lang.Object value) Determines whether the supplied value matched the selected value through delegating to SelectedValueComparator.isSelected(org.springframework.web.servlet.support.BindStatus, java.lang.Object).
protected boolean	isValidDynamicAttribute(java.lang.String localName, java.lang.Object value) Flags "type" as an illegal dynamic attribute.
protected void	renderFromBoolean(java.lang.Boolean boundValue, TagWriter tagWriter) Render the 'input(checkbox)' with the supplied value, marking the 'input' element as 'checked' if the supplied Boolean is true.
protected void	renderFromValue(java.lang.Object item, java.lang.Object value, TagWriter tagWriter) Render the 'input(checkbox)' with the supplied value, marking the 'input' element as 'checked' if the supplied value matches the bound value.
protected void	renderFromValue(java.lang.Object value, TagWriter tagWriter) Render the 'input(checkbox)' with the supplied value, marking the 'input' element as 'checked' if the supplied value matches the bound value.
protected abstract int	writeTagContent(TagWriter tagWriter) Writes the 'input' element to the supplied TagWriter, marking it as 'checked' if appropriate.

Methods inherited from class org.springframework.web.servlet.tags.form.AbstractHtmlInputElementTag

getAccesskey, getOnblur, getOnchange, getOnfocus, isDisabled, isReadonly, setAccesskey, setDisabled, setOnblur, setOnchange, setOnfocus, setReadonly, writeOptionalAttributes

Methods inherited from class org.springframework.web.servlet.tags.form.AbstractHtmlElementTag

getCssClass, getCssErrorClass, getCssStyle, getDir, getDynamicAttributes, getLang, getOnclick, getOndblclick, getOnkeydown, getOnkeypress, getOnkeyup, getOnmousedown, getOnmousemove, getOnmouseout, getOnmouseover, getOnmouseup, getTabindex, getTitle, resolveCssClass, setCssClass, setCssErrorClass, setCssStyle, setDir, setDynamicAttribute, setLang, setOnclick, setOndblclick, setOnkeydown, setOnkeypress, setOnkeyup, setOnmousedown, setOnmousemove, setOnmouseout, setOnmouseover, setOnmouseup, setTabindex, setTitle, writeDefaultAttributes

Methods inherited from class org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag

convertToDisplayString, doFinally, getBindStatus, getBoundValue, getEditor, getId, getName, getNestedPath, getPath, getPropertyEditor, getPropertyPath, processFieldValue, resolveId, setId, setPath

Methods inherited from class org.springframework.web.servlet.tags.form.AbstractFormTag

createTagWriter, doStartTagInternal, evaluate, getDisplayString, getDisplayString, isDefaultHtmlEscape, writeOptionalAttribute

Methods inherited from class org.springframework.web.servlet.tags.HtmlEscapingAwareTag

htmlEscape, isHtmlEscape, isResponseEncodedHtmlEscape, setHtmlEscape

Methods inherited from class org.springframework.web.servlet.tags.RequestContextAwareTag

doCatch, doStartTag, getRequestContext

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractCheckedElementTag

public AbstractCheckedElementTag()

Method Detail

renderFromValue

protected void renderFromValue(java.lang.Object value,
                               TagWriter tagWriter)
                        throws JspException

Render the 'input(checkbox)' with the supplied value, marking the 'input' element as 'checked' if the supplied value matches the bound value.

Throws:

JspException

renderFromValue

protected void renderFromValue(java.lang.Object item,
                               java.lang.Object value,
                               TagWriter tagWriter)
                        throws JspException

Render the 'input(checkbox)' with the supplied value, marking the 'input' element as 'checked' if the supplied value matches the bound value.

Throws:

JspException

isOptionSelected

private boolean isOptionSelected(java.lang.Object value)
                          throws JspException

Determines whether the supplied value matched the selected value through delegating to SelectedValueComparator.isSelected(org.springframework.web.servlet.support.BindStatus, java.lang.Object).

Throws:

JspException

renderFromBoolean

protected void renderFromBoolean(java.lang.Boolean boundValue,
                                 TagWriter tagWriter)
                          throws JspException

Render the 'input(checkbox)' with the supplied value, marking the 'input' element as 'checked' if the supplied Boolean is true.

Throws:

JspException

autogenerateId

protected java.lang.String autogenerateId()
                                   throws JspException

Return a unique ID for the bound name within the current PageContext.

Overrides:

autogenerateId in class AbstractDataBoundFormElementTag

Throws:

JspException

writeTagContent

protected abstract int writeTagContent(TagWriter tagWriter)
                                throws JspException

Writes the 'input' element to the supplied TagWriter, marking it as 'checked' if appropriate.

Specified by:

writeTagContent in class AbstractFormTag

Returns:

valid tag render instruction as per javax.servlet.jsp.tagext.Tag#doStartTag().

Throws:

JspException

isValidDynamicAttribute

protected boolean isValidDynamicAttribute(java.lang.String localName,
                                          java.lang.Object value)

Flags "type" as an illegal dynamic attribute.

Overrides:

isValidDynamicAttribute in class AbstractHtmlElementTag

getInputType

protected abstract java.lang.String getInputType()

Return the type of the HTML input element to generate: "checkbox" or "radio".