import org.codehaus.groovy.grails.plugins.web.taglib.FormTagLib

class TextAreaTagLib extends FormTagLib {
	static namespace = "jttext"

	static String script = """
<script>
 	function checkLength(elementId, maxLength) {
 		var field = \$(elementId);
 		var value = field.value;
 		if(value.length>maxLength) {
 			field.value=value.substring(0,maxLength);
 		}
 		if(\$(elementId+'Counter')) 
 			\$(elementId+'Counter').innerHTML=maxLength-field.value.length+' characters left';
 	}
</script>
"""
	def changeScript = { attrs ->
		out << script
	}
	
	def textArea = {attrs ->
		resolveAttributes(attrs)
	    attrs.id = attrs.id ? attrs.id : attrs.name
	    // Pull out values to use as content not attrib
	    def maxlength = attrs.remove('maxlength')
	    def value = attrs.remove('value')
	    
	    def escapeHtml = true
	    if (attrs.escapeHtml) escapeHtml = Boolean.valueOf(attrs.remove('escapeHtml'))

	    attrs.put('onkeydown',"checkLength('${attrs.id}',${maxlength})")
	    attrs.put('onkeyup',"checkLength('${attrs.id}',${maxlength})")
	    out << "<textarea " 
	    outputAttributes(attrs) 
	    out << ">" << (escapeHtml ? value.encodeAsHTML() : value) << "</textarea>" 
	}

	def statusDiv = { attrs ->
		out << "<div id=\"${attrs.for}Counter\">&nbsp;</div>"	
	}
}