| //////////////////////////////////////////////////////////////////////////////// |
| // |
| // 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.operations |
| { |
| import flashx.textLayout.debug.assert; |
| import flashx.textLayout.edit.SelectionState; |
| import flashx.textLayout.elements.ContainerFormattedElement; |
| import flashx.textLayout.elements.FlowElement; |
| import flashx.textLayout.elements.FlowGroupElement; |
| import flashx.textLayout.elements.ParagraphFormattedElement; |
| import flashx.textLayout.elements.TextFlow; |
| |
| import flashx.textLayout.tlf_internal; |
| |
| use namespace tlf_internal; |
| |
| /** |
| * The ApplyElementUserStyleOperation class encapsulates a change in a style value of an element. |
| * |
| * @see flashx.textLayout.elements.FlowElement#userStyles |
| * @see flashx.textLayout.edit.EditManager |
| * @see flashx.textLayout.events.FlowOperationEvent |
| * |
| * @playerversion Flash 10 |
| * @playerversion AIR 1.5 |
| * @langversion 3.0 |
| */ |
| public class ApplyElementUserStyleOperation extends FlowElementOperation |
| { |
| private var _styleName:String; |
| |
| private var _origValue:*; |
| private var _newValue:*; |
| |
| /** |
| * Creates a ApplyElementUserStyleOperation object. |
| * |
| * <p>If the <code>relativeStart</code> and <code>relativeEnd</code> parameters are set, then the existing |
| * element is split into multiple elements, the selected portion using the new |
| * style value and the rest using the existing style value.</p> |
| * |
| * @param operationState Describes the range of text to style. |
| * @param targetElement Specifies the element to change. |
| * @param styleName The name of the style to change. |
| * @param value The new style value. |
| * @param relativeStart An offset from the beginning of the target element. |
| * @param relativeEnd An offset from the end of the target element. |
| * |
| * @playerversion Flash 10 |
| * @playerversion AIR 1.5 |
| * @langversion 3.0 |
| */ |
| public function ApplyElementUserStyleOperation(operationState:SelectionState, targetElement:FlowElement, styleName:String, value:*, relativeStart:int = 0, relativeEnd:int = -1) |
| { |
| _styleName = styleName; |
| _newValue = value; |
| |
| super(operationState,targetElement,relativeStart,relativeEnd); |
| } |
| |
| /** |
| * The name of the style changed. |
| * |
| * @playerversion Flash 10 |
| * @playerversion AIR 1.5 |
| * @langversion 3.0 |
| */ |
| public function get styleName():String |
| { return _styleName; } |
| public function set styleName(val:String):void |
| { _styleName = val; } |
| |
| /** |
| * The new style value. |
| * |
| * @playerversion Flash 10 |
| * @playerversion AIR 1.5 |
| * @langversion 3.0 |
| */ |
| public function get newValue():* |
| { return _newValue; } |
| public function set newValue(val:*):void |
| { _newValue = val; } |
| |
| /** @private */ |
| public override function doOperation():Boolean |
| { |
| var targetElement:FlowElement = getTargetElement(); |
| _origValue = targetElement.getStyle(_styleName); |
| |
| adjustForDoOperation(targetElement); |
| |
| targetElement.setStyle(_styleName,_newValue); |
| return true; |
| } |
| |
| /** @private */ |
| public override function undo():SelectionState |
| { |
| var targetElement:FlowElement = getTargetElement(); |
| targetElement.setStyle(_styleName,_origValue); |
| |
| adjustForUndoOperation(targetElement); |
| |
| return originalSelectionState; |
| } |
| } |
| } |