!7868 stack组件alignChanged xts 代码提交

Merge pull request !7868 from 张海霖/zhl_09

arkui/ace_ets_layout_test/entry/src/main/ets/MainAbility/pages/Stack/Stack_change/stackAlignChange.ets

+/**
+ * Copyright (c) 2023 iSoftStone Information Technology (Group) Co.,Ltd.
+ * Licensed 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.
+ */
+import { MessageManager,Callback } from '../../../common/MessageManager';
+@Entry
+@Component
+struct StackAlignChange {
+  @State testAlignContentValue: number = Alignment.TopStart
+  @State testAlignValue: number = Alignment.TopStart
+  messageManager:MessageManager = new MessageManager()
+  private content: string = "StackAlignChange Page";
+  onPageShow() {
+    console.info('StackAlignChange onPageShow');
+    globalThis.value = {
+      name:'messageManager',message:this.messageManager
+    }
+    let callback:Callback = (message:any) => {
+      console.log('message = ' + message.name + "--" + message.value);
+      if (message.name == 'alignContent') {
+        this.testAlignContentValue = message.value;
+      }
+      if (message.name == 'align') {
+        this.testAlignValue = message.value;
+      }
+    }
+    this.messageManager.registerCallback(callback);
+  }
+
+  onBuildDone() {
+    console.info('StackAlignChange page build done called');
+  }
+
+  build() {
+    Column(){
+        Stack({alignContent: this.testAlignContentValue}) {
+          Text('1').width(200).height(200).backgroundColor(0xF5DEB3).key('stackTopStartKey01')
+          Text('2').width(100).height(100).backgroundColor(0xD2B48C).key('stackTopStartKey02')
+       }.width(300).height(300).backgroundColor(0xAFEEEE).align(this.testAlignValue).key('stackTopStartKey')
+      }.alignItems(HorizontalAlign.Start)
+  }
+}