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attributes.cfc
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attributes.cfc
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<cfcomponent name="Attributes">
<cfparam name="variables.attributes" default="" />
<!-------------------------------------------------------------------------------------------- init
Description: Initialize the attributes structure from the Arguments collection. Known arguments
are ignored while unrecognized arguments are added to the attributes structure.
Arguments: A structure containing an arbitrary number of Arguments
Return Value: None
----------------------------------------------------------------------------------------------------->
<cffunction name="init">
<cfargument name="reserved_arguments" default="" />
<!--- Setup a structure to hold the (key,value) attributes for the HTML tag --->
<cfset variables.attributes = StructNew() />
<!--- Loop over the argument collection and place unrecognized keys into the attributes struct --->
<cfloop collection="#Arguments#" item="key">
<cfset key = LCase(key) />
<cfif key NEQ "reserved_arguments" AND NOT ListFind(arguments.reserved_arguments, key)>
<cfset StructInsert(variables.attributes, key, StructFind(Arguments, key), "true") />
</cfif>
</cfloop>
</cffunction>
<!---------------------------------------------------------------------------------------------- add
Description: Add an attribute to the list if it is not already present. If the attribute exists
then it does not get updated.
Arguments: key - The name of the attribute
value - The value of the attribute
Return Value: None
----------------------------------------------------------------------------------------------------->
<cffunction name="add">
<cfargument name="key" />
<cfargument name="value" />
<cfif NOT StructKeyExists(variables.attributes, arguments.key)>
<cfset StructInsert(attributes, arguments.key, arguments.value) />
</cfif>
</cffunction>
<!---------------------------------------------------------------------------------------------- get
Description: Gets the value of an existing attribute.
Arguments: key - The name of the attribute
Return Value: None
----------------------------------------------------------------------------------------------------->
<cffunction name="get">
<cfargument name="key" />
<cfif StructKeyExists(attributes, key)>
<cfreturn StructFind(attributes, key) />
<cfelse>
<cfreturn "" />
</cfif>
</cffunction>
<!---------------------------------------------------------------------------------------------- set
Description: Sets the value of an existing attribute.
Arguments: key - The name of the attribute
value - The value of the attribute
Return Value: None
----------------------------------------------------------------------------------------------------->
<cffunction name="set">
<cfargument name="key" />
<cfargument name="value" />
<cfset StructInsert(attributes, arguments.key, arguments.value, "true") />
</cffunction>
<!---------------------------------------------------------------------------------------------- remove
Description: Sets the value of an existing attribute.
Arguments: key - The name of the attribute
value - The value of the attribute
Return Value: None
----------------------------------------------------------------------------------------------------->
<cffunction name="remove">
<cfargument name="key" />
<cfif StructKeyExists(attributes,arguments.key)>
<cfset StructDelete(attributes, arguments.key) />
</cfif>
</cffunction>
<!------------------------------------------------------------------------------------------- string
Description: Gets the string of attributes. The string is of the form:
attribute1="value1" attribute2="value2" ...
Arguments: None
Return Value: The string of attributes to be placed within the HTML tag
----------------------------------------------------------------------------------------------------->
<cffunction name="string">
<cfset attribute_string = "" />
<cfloop collection="#attributes#" item="key">
<cfif key neq "multiple">
<cfset attribute_string = attribute_string & ' #key#="#StructFind(attributes,key)#"' />
</cfif>
</cfloop>
<cfreturn attribute_string />
</cffunction>
</cfcomponent>