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1/*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15import router from '@ohos.router'
16
17@Component
18export default struct TitleBar {
19  private title: string | Resource = $r('app.string.MainAbility_label')
20  private hasBackPress: boolean = false
21
22  aboutToAppear() {
23    this.hasBackPress = parseInt(router.getLength(), 10) > 0
24    console.log(router.getLength())
25  }
26
27  build() {
28    Row() {
29      if (this.hasBackPress) {
30        Image($r('app.media.ic_back'))
31          .width(40).height('100%')
32          .objectFit(ImageFit.Contain)
33          .onClick(() => {
34            router.back()
35          })
36      }
37      Text(this.title)
38        .fontColor(Color.White)
39        .fontSize(30)
40        .layoutWeight(1)
41    }
42    .width('100%')
43    .height('8%')
44    .constraintSize({ minHeight: 70 })
45    .padding({ left: 15 })
46    .backgroundColor('#0D9FFB')
47  }
48}