| //////////////////////////////////////////////////////////////////////////////// |
| // |
| // Licensed to the Apache Software Foundation (ASF) under one or more |
| // contributor license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright ownership. |
| // The ASF licenses this file to You under the Apache License, Version 2.0 |
| // (the "License"); you may not use this file except in compliance with |
| // the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| //////////////////////////////////////////////////////////////////////////////// |
| package flashx.textLayout.property |
| { |
| import flashx.textLayout.debug.assert; |
| import flashx.textLayout.formats.FormatValue; |
| import flashx.textLayout.tlf_internal; |
| |
| use namespace tlf_internal; |
| |
| [ExcludeClass] |
| /** A property description with an unsigned integer as its value. Typically used for color. @private */ |
| public class UintPropertyHandler extends PropertyHandler |
| { |
| public override function get customXMLStringHandler():Boolean |
| { return true; } |
| |
| public override function toXMLString(val:Object):String |
| { |
| var result:String = val.toString(16); |
| if (result.length < 6) |
| result = "000000".substr(0, 6 - result.length) + result; |
| result = "#" + result; |
| return result; |
| } |
| |
| /** @private */ |
| public override function owningHandlerCheck(newVal:*):* |
| { |
| if (newVal is uint) |
| return newVal; |
| |
| var newRslt:Number; |
| if (newVal is String) |
| { |
| var str:String = String(newVal); |
| // Normally, we could just cast a string to a uint. However, the casting technique only works for |
| // normal numbers and numbers preceded by "0x". We can encounter numbers of the form "#ffffffff" |
| if (str.substr(0, 1) == "#") |
| str = "0x" + str.substr(1, str.length-1); |
| newRslt = (str.toLowerCase().substr(0, 2) == "0x") ? parseInt(str) : NaN; |
| } |
| else if (newVal is Number || newVal is int) |
| newRslt = Number(newVal); |
| else |
| return undefined; |
| |
| if (isNaN(newRslt)) |
| return undefined; |
| |
| if (newRslt < 0 || newRslt > 0xffffffff) |
| return undefined; |
| |
| return newRslt; |
| } |
| } |
| } |