Olá, é não existe mesmo, uma pena :(
e vamu de labelFunction hehehe Luis Eduardo escreveu: > > Oi Daniel, > > Com o componente AdvancedDataGrid eu não tenho certeza, mas o DataGrid > normal eu sei que isso é impossível, ao menos do jeito que ele é > "vendido". > Pra poder ter essa habilidade (eu tb precisei em um projeto) extendi o > datagridcolumn e usei um parser de xml feito pelo Michael Labriola. Na > extensão do DataGridColumn já tem um labelFuncton setado com a função > que chama o parser. Segue um rascunho da classe extendida: > > <?xml version="1.0" encoding="utf-8"?> > <mx:DataGridColumn > xmlns:mx="http://www.adobe.com/2006/mxml"; > labelFunction="displayXMLData" > > > > <mx:Script> > <![CDATA[ > > public function displayXMLData( row:Object, > column:br.com.suprasis.Components.DataGridColumn ):String { > var retVal:String = E4XParser.evaluate( row, column.dataField ); > return retVal; > } > > ]]></mx:Script> > </mx:DataGridColumn> > > o codigo ficou meio estranho mas é pq retirei um tanto de coisas pra ficar > mais claro. > > e aqui vai a Classe E4XParser, que aliás foi criada pelo Michael Labriola > e está disponível pra uso desde que mantenham-se os créditos. > > espero que ajude, caso realmente o AdvancedDataGrid não tenha a > funcionalidade que vc precisa escondida em algum lugar. > > abraços, > Luís Eduardo > > E4XParser.as > ----------------- > /* > * Copyright (c) 2006 Michael Labriola <[EMAIL PROTECTED]> > * > * Permission is hereby granted, free of charge, to any person > * obtaining a copy of this software and associated documentation > * files (the "Software"), to deal in the Software without > * restriction, including without limitation the rights to use, > * copy, modify, merge, publish, distribute, sublicense, and/or sell > * copies of the Software, and to permit persons to whom the > * Software is furnished to do so, subject to the following > * conditions: > * > * The above copyright notice and this permission notice shall be > * included in all copies or substantial portions of the Software. > * > * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, > * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES > * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND > * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT > * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, > * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING > * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR > * OTHER DEALINGS IN THE SOFTWARE. > */ > > /* This utility covers the major cases presented while parsing an e4x string. > * It is not complete, and, in particular is lacking in advanvced > predicate filtering. > * It also still needs support for regular expressions in the predicate > */ > > package br.com.suprasis.Utils > { > import flash.utils.Dictionary; > import mx.utils.StringUtil; > > public class E4XParser > { > static protected var patterns:Dictionary = new > Dictionary(false); > > static protected function sEqual( leftSide:String, > rightSide:String > ):Boolean { > return ( StringUtil.trim( leftSide ) == > StringUtil.trim( rightSide ) ); > } > > static protected function sNotEqual( leftSide:String, > rightSide:String > ):Boolean { > return ( StringUtil.trim( leftSide ) != > StringUtil.trim( rightSide ) ); > } > > static protected function sGreaterThan( leftSide:String, > rightSide:String ):Boolean { > return ( StringUtil.trim( leftSide ) > StringUtil.trim( > rightSide ) ); > } > > static protected function sLessThan( leftSide:String, > rightSide:String > ):Boolean { > return ( StringUtil.trim( leftSide ) < StringUtil.trim( > rightSide ) ); > } > > static protected function nEqual( leftSide:String, > rightSide:String > ):Boolean { > if ( isNaN( Number( leftSide ) ) || isNaN( Number( > rightSide ) ) ) { > return sEqual( leftSide, rightSide ); > } > > return ( Number( leftSide ) == Number( rightSide ) ); > } > > static protected function nNotEqual( leftSide:String, > rightSide:String > ):Boolean { > if ( isNaN( Number( leftSide ) ) || isNaN( Number( > rightSide ) ) ) { > return sNotEqual( leftSide, rightSide ); > } > > return ( Number( leftSide ) != Number( rightSide ) ); > } > > static protected function nGreaterThan( leftSide:String, > rightSide:String ):Boolean { > if ( isNaN( Number( leftSide ) ) || isNaN( Number( > rightSide ) ) ) { > return sGreaterThan( leftSide, rightSide ); > } > > return ( Number( leftSide ) > Number( rightSide ) ); > } > > static protected function nLessThan( leftSide:String, > rightSide:String > ):Boolean { > if ( isNaN( Number( leftSide ) ) || isNaN( Number( > rightSide ) ) ) { > return sLessThan( leftSide, rightSide ); > } > > return ( Number( leftSide ) < Number( rightSide ) ); > } > > static protected var comparisonMap:Object; > static protected function getComparisonHashMap():Object { > if ( !comparisonMap ) > { > comparisonMap = new Object(); > comparisonMap[ 'string' ] = new Object(); > comparisonMap[ 'numeric' ] = new Object(); > > comparisonMap[ 'string' ][ '==' ] = sEqual; > comparisonMap[ 'string' ][ '!=' ] = sNotEqual; > comparisonMap[ 'string' ][ '>' ] = sGreaterThan; > comparisonMap[ 'string' ][ '<' ] = sLessThan; > > comparisonMap[ 'numeric' ][ '==' ] = nEqual; > comparisonMap[ 'numeric' ][ '!=' ] = nNotEqual; > comparisonMap[ 'numeric' ][ '>' ] = > nGreaterThan; > comparisonMap[ 'numeric' ][ '<' ] = nLessThan; > } > > return comparisonMap; > } > > static public var quotedAttrib:RegExp = /(@)\["*(\w+)"*\]/g; > static public var quotedBrackets:RegExp = /\["*(\w+)"*\]/g; > static public var brackets:RegExp = /\[(.+)\]/g; > static public var descendant:RegExp = /\.\./g; > static public var quotes:RegExp = /\"/g; > static public var periods:RegExp = /\./g; > static public var dotsInPredicate:RegExp = > /(\([^\)]+)(\.)([^\)\.]+\))/g; > static public var previousDots:RegExp = /(.+)(\(dot\))(\.)/g; > > static public function comparison( data:XMLList, > comparison:String > ):XMLList { > var operands:Array; > var returnList:XMLList = new XMLList(); > var comparisonType:String; > var operator:String; > > //Loose the parens > comparison = comparison.substr( 1, comparison.length - > 2); > > //Right now we are just supporting these four basic > operators > //Feel free to add more for <=, >=, etc. > if ( comparison.search( "==" ) > -1 ) { > operator = "=="; > } else if ( comparison.search( "!=" ) > -1 ) { > operator = "!="; > } else if ( comparison.search( ">" ) > -1 ) { > operator = ">"; > } else if ( comparison.search( "<" ) > -1 ) { > operator = "<"; > } else > throw new Error("Unknown Operator"); > > operands = comparison.split( operator ); > > var leftSide:String = operands[0]; > var rightSide:String = operands[1]; > > if ( ( !leftSide.length ) || ( !rightSide.length ) ) > throw new Error("Missing operand in comparison > " + comparison ); > > //Does the right side have quotes? > if ( rightSide.substr(0,1) == '"' ) { > //Loose the quotes and do a string comparison > rightSide = rightSide.substr( 1, > rightSide.length - 2); > comparisonType = "string"; > } else { > //This means we are going to try the numeric > test first, > //however, we still might not be able to > convert the criterion > //to a number, in which case, we still revert > to string > comparisonType = "numeric"; > } > > var compareFunction:Object = getComparisonHashMap(); > > var item:XML; > for ( var i:int=0; i<data.length(); i++ ) { > item = data[i]; > //trace( "compare : " + item[ leftSide ] + " > with " + rightSide ); > > if ( compareFunction[comparisonType][operator]( > item[StringUtil.trim(leftSide)], rightSide ) ) > { > returnList += item; > } > } > > return returnList; > } > > static public function descend( data:XMLList, expression:String > ):XMLList { > //loose the double underscores > expression = expression.substr( 2 ); > > data = data.descendants( expression ); > > return data; > } > > static public function evaluate( data:Object, expression:String > ):XMLList { > > var items:Array; > > if ( !patterns[ expression ] ) > { > //In our particular application this code is > used within datagrids, so > the exact same > //pattern is searched many time. Basically, we > are just optimizing for > this case by storing > //the split array of strings when we encounter > the same pattern > var s:String = expression; > > //Handle any quoted strings after the @ by > removing the quotes and > brackets, not needed now > s = s.replace(quotedAttrib, "$1$2" ); > > //Handle any quoted strings inside of brackets > and replace with a . > s = s.replace(quotedBrackets, ".$1" ); > > //Remove the remaining brackets and replace > with a . > s = s.replace(brackets, ".$1" ); > > //We replace the descendant character with > double underscores > s = s.replace( descendant, ".__" ); > > //This now gets extremely complicated. There > are times when the > //predicate is very complicated, for instance, > regular expressions > //right now we only support basic examples. > Stay tuned for enhanced > versions > s = s.replace(dotsInPredicate, "$1(dot)$3" ); > > //We split the string along the remaining > periods > items = s.split(periods); > > for ( var j:int=0;j<items.length;j++ ) { > //We replace the phrase (dot) with real > periods again as the split is > now complete > items[j] = > items[j].replace(previousDots, "$1.$3" ); > } > > //Store this for the next round > patterns[ expression ] = items; > } > else > { > items = patterns[ expression ]; > } > > var dataPtr:Object; > > var item:String; > > dataPtr = data; > for ( var i:int = 0; i<items.length;i++ ) > { > //items contains the expression, split apart to > be examined > item = items[ i ]; > if ( item.substr(0,1) == '(' ) { > //This is a prediate filter, now the > fun work begins > dataPtr = comparison( XMLList( dataPtr > ), item ); > } > else if ( item.search( /__/ ) > -1 ) > { > //this is a simple descendent case > dataPtr = descend( XMLList( dataPtr ), > item ); > } > else > { > if ( item.substr(0,1) == '"' ) { > //This handles the case where > the user provides a quoted string to an > //array reference > item = item.replace(quotes, ""); > } > > //So long as the item exists, follow > the pointer. > if ( item != '' ) > dataPtr = dataPtr[ item ]; > } > } > > return XMLList( dataPtr ); > } > } > } > > > > > > > > > > > > > ----------------------------- > > > > > > > > > > > > > > > > > >> Olá Pessoal, >> >> É o seguinte, eu tenho uma classe chamada Pessoa, e outra chamada >> Endereco. Em Pessoa eu tenho uma propriedade chamada EnderecoResidencial >> que é do tipo Endereco. >> >> Em um datagrid, quando eu estou criando uma coluna, eu não posso fazer >> assim não ? >> >> <mx:AdvancedDataGridColumn headerText="Rua" >> dataField="*EnderecoResidencial.Numero*"/> >> >> >> >> >> >> > > > > > > --~--~---------~--~----~------------~-------~--~----~ Você recebeu esta mensagem porque está inscrito na lista "flexdev" Para enviar uma mensagem, envie um e-mail para [email protected] Para sair da lista, envie um email em branco para [EMAIL PROTECTED] Mais opções estão disponíveis em http://groups.google.com/group/flexdev -~----------~----~----~----~------~----~------~--~---
