| //////////////////////////////////////////////////////////////////////////////// |
| // |
| // 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 org.apache.royale.core |
| { |
| import org.apache.royale.states.AddItems; |
| import org.apache.royale.states.SetEventHandler; |
| import org.apache.royale.states.SetProperty; |
| import org.apache.royale.states.State; |
| |
| import org.apache.royale.core.IChild; |
| import org.apache.royale.core.IParent; |
| import org.apache.royale.core.IStatesObject; |
| import org.apache.royale.events.Event; |
| import org.apache.royale.events.EventDispatcher; |
| import org.apache.royale.events.IEventDispatcher; |
| import org.apache.royale.events.ValueChangeEvent; |
| import org.apache.royale.utils.MXMLDataInterpreter; |
| |
| /** |
| * The SimpleStatesImpl class implements a minimal set of |
| * view state functionality that is sufficient for most applications. |
| * It only supports AddItems and SetProperty changes at this time. |
| * |
| * @langversion 3.0 |
| * @playerversion Flash 10.2 |
| * @playerversion AIR 2.6 |
| * @productversion Royale 0.8 |
| */ |
| public class SimpleStatesImpl extends EventDispatcher implements IStatesImpl, IBead |
| { |
| /** |
| * Constructor. |
| * |
| * @langversion 3.0 |
| * @playerversion Flash 10.2 |
| * @playerversion AIR 2.6 |
| * @productversion Royale 0.8 |
| */ |
| public function SimpleStatesImpl() |
| { |
| super(); |
| } |
| |
| private var _strand:IStrand; |
| |
| private var sawInitComplete:Boolean; |
| |
| /** |
| * @copy org.apache.royale.core.IBead#strand |
| * |
| * @langversion 3.0 |
| * @playerversion Flash 10.2 |
| * @playerversion AIR 2.6 |
| * @productversion Royale 0.8 |
| * @royaleignorecoercion org.apache.royale.events.IEventDispatcher |
| */ |
| public function set strand(value:IStrand):void |
| { |
| _strand = value; |
| IEventDispatcher(_strand).addEventListener("currentStateChange", stateChangeHandler); |
| IEventDispatcher(_strand).addEventListener("initComplete", initialStateHandler); |
| } |
| |
| /** |
| * @royaleignorecoercion org.apache.royale.core.IStatesObject |
| */ |
| private function initialStateHandler(event:org.apache.royale.events.Event):void |
| { |
| sawInitComplete = true; |
| stateChangeHandler(new ValueChangeEvent("currentStateChange", false, false, null, |
| IStatesObject(_strand).currentState)); |
| } |
| |
| /** |
| * @royaleignorecoercion org.apache.royale.core.IStatesObject |
| */ |
| private function stateChangeHandler(event:ValueChangeEvent):void |
| { |
| if (!sawInitComplete) |
| return; |
| |
| var doc:IStatesObject = _strand as IStatesObject; |
| var arr:Array = doc.states; |
| for each (var s:State in arr) |
| { |
| if (s.name == event.oldValue) |
| { |
| revert(s); |
| break; |
| } |
| } |
| for each (s in arr) |
| { |
| if (s.name == event.newValue) |
| { |
| apply(s); |
| break; |
| } |
| } |
| doc.dispatchEvent(new Event("stateChangeComplete")); |
| } |
| |
| /** |
| * @royaleignorecoercion org.apache.royale.states.AddItems |
| * @royaleignorecoercion org.apache.royale.core.IParent |
| * @royaleignorecoercion org.apache.royale.core.IContainer |
| * @royaleignorecoercion org.apache.royale.states.SetProperty |
| * @royaleignorecoercion org.apache.royale.states.SetEventHandler |
| */ |
| private function revert(s:State):void |
| { |
| var arr:Array = s.overrides; |
| for each (var o:Object in arr) |
| { |
| if (o is AddItems) |
| { |
| var ai:AddItems = AddItems(o); |
| for each (var item:IChild in ai.items) |
| { |
| var parent:IParent = item.parent as IParent; |
| if (parent) |
| { |
| parent.removeElement(item); |
| } |
| } |
| if (parent is IContainer) |
| IContainer(parent).childrenAdded(); |
| } |
| else if (o is SetProperty) |
| { |
| var sp:SetProperty = SetProperty(o); |
| if (sp.target != null) |
| sp.document[sp.target][sp.name] = sp.previousValue; |
| else |
| sp.document[sp.name] = sp.previousValue; |
| } |
| else if (o is SetEventHandler) |
| { |
| var seh:SetEventHandler = SetEventHandler(o); |
| if (seh.target != null) |
| { |
| seh.document[seh.target].removeEventListener(seh.name, seh.handlerFunction); |
| } |
| else |
| { |
| seh.document.removeEventListener(seh.name, seh.handlerFunction); |
| } |
| } |
| } |
| } |
| |
| /** |
| * @royaleignorecoercion Array |
| * @royaleignorecoercion org.apache.royale.states.AddItems |
| * @royaleignorecoercion org.apache.royale.core.IChild |
| * @royaleignorecoercion org.apache.royale.core.IParent |
| * @royaleignorecoercion org.apache.royale.core.IContainer |
| * @royaleignorecoercion org.apache.royale.states.SetProperty |
| * @royaleignorecoercion org.apache.royale.states.SetEventHandler |
| */ |
| private function apply(s:State):void |
| { |
| var arr:Array = s.overrides; |
| for each (var o:Object in arr) |
| { |
| if (o is AddItems) |
| { |
| var ai:AddItems = AddItems(o); |
| if (ai.items == null) |
| { |
| ai.items = ai.itemsDescriptor.items as Array; |
| if (ai.items == null) |
| { |
| ai.items = |
| MXMLDataInterpreter.generateMXMLArray(ai.document, |
| null, ai.itemsDescriptor.descriptor); |
| ai.itemsDescriptor.items = ai.items; |
| } |
| } |
| for each (var item:IChild in ai.items) |
| { |
| var parent:IParent = ai.document as IParent; |
| if (ai.destination != null) |
| parent = parent[ai.destination] as IParent; |
| if (ai.relativeTo != null) |
| { |
| var child:IChild = ai.document[ai.relativeTo] as IChild; |
| if (ai.destination == null) |
| parent = child.parent as IParent; |
| var index:int = parent.getElementIndex(child); |
| if (ai.position == "after") |
| index++; |
| parent.addElementAt(item, index); |
| } |
| else if (ai.position == "first") |
| { |
| parent.addElementAt(item, 0); |
| } |
| else |
| { |
| parent.addElement(item); |
| } |
| } |
| if (parent is IContainer) |
| IContainer(parent).childrenAdded(); |
| } |
| else if (o is SetProperty) |
| { |
| var sp:SetProperty = SetProperty(o); |
| if (sp.target != null) |
| { |
| sp.previousValue = sp.document[sp.target][sp.name]; |
| sp.document[sp.target][sp.name] = sp.value; |
| } |
| else |
| { |
| sp.previousValue = sp.document[sp.name]; |
| sp.document[sp.name] = sp.value; |
| } |
| } |
| else if (o is SetEventHandler) |
| { |
| var seh:SetEventHandler = SetEventHandler(o); |
| if (seh.target != null) |
| { |
| seh.document[seh.target].addEventListener(seh.name, seh.handlerFunction); |
| } |
| else |
| { |
| seh.document.addEventListener(seh.name, seh.handlerFunction); |
| } |
| } |
| } |
| } |
| /** |
| * Allows an IBead to declare what notifications it wants. |
| * |
| * @langversion 3.0 |
| * @playerversion Flash 10.2 |
| * @playerversion AIR 2.6 |
| * @productversion Royale 0.9.6 |
| */ |
| public function listInterests():Array |
| { |
| return []; |
| } |
| |
| /** |
| * Used by an IStrand to notify the bead. |
| * |
| * @langversion 3.0 |
| * @playerversion Flash 10.2 |
| * @playerversion AIR 2.6 |
| * @productversion Royale 0.9.6 |
| */ |
| public function handleNotification(notification:INotification):void |
| { |
| } |
| } |
| } |
