1/*
2 * Copyright (c) 2021-2023 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 */
15
16import router from '@ohos.router';
17import common from '@ohos.app.ability.common';
18import Constants from '../utils/constant';
19
20@Component
21export struct backBar {
22  private context = getContext(this) as common.UIAbilityContext;
23  @Prop title: string = ''; // return title name
24  @Prop recordable: boolean = false;
25  @State record: string = '';
26  @State isTouch: string = '';
27  @State isBack: boolean = false;
28  @State isMore: boolean = false;
29
30  build() {
31    Column() {
32      Flex({ justifyContent: FlexAlign.Start, alignItems: ItemAlign.Center }) {
33        Row() {
34          SymbolGlyph($r('sys.symbol.arrow_left'))
35            .width(Constants.BACKBAR_IMAGE_WIDTH)
36            .height(Constants.BACKBAR_IMAGE_HEIGHT)
37            .fontSize(Constants.FONT_SIZE_24_vp)
38            .fontColor([$r('sys.color.icon_primary')])
39            .fontWeight(FontWeight.Medium)
40        }.width(Constants.CLICK_SHADOW_LENGTH)
41        .height(Constants.CLICK_SHADOW_LENGTH)
42        .borderRadius($r('sys.float.ohos_id_corner_radius_clicked'))
43        .alignItems(VerticalAlign.Center)
44        .justifyContent(FlexAlign.Center)
45        .backgroundColor(this.isBack ? $r('sys.color.interactive_click') : '')
46        .onTouch(event => {
47          if (event === undefined) {
48            return;
49          }
50          if (event.type === TouchType.Down) {
51            this.isBack = true;
52          }
53          if (event.type === TouchType.Up) {
54            this.isBack = false;
55          }
56        })
57        .onClick(() => {
58          let length = router.getLength();
59          Number(length) == 1 ? this.context.terminateSelf() : router.back();
60        })
61        Text(JSON.parse(this.title))
62          .align(Alignment.Start)
63          .fontColor($r('sys.color.font_primary'))
64          .maxLines(Constants.MAXIMUM_HEADER_LINES)
65          .textOverflow({ overflow: TextOverflow.Ellipsis })
66          .fontSize(Constants.TEXT_BIG_FONT_SIZE)
67          .flexGrow(Constants.FLEX_GROW)
68          .fontWeight(FontWeight.Bold)
69          .margin({ left: Constants.MARGIN_4, right: Constants.MARGIN_4 })
70        if (this.recordable) {
71          Row() {
72            Image($r('sys.media.ohos_ic_public_more'))
73              .fillColor($r('sys.color.icon_primary'))
74              .objectFit(ImageFit.Contain)
75              .height(Constants.BACKBAR_IMAGE_WIDTH)
76              .width(Constants.BACKBAR_IMAGE_HEIGHT)
77              .draggable(false)
78          }.width(Constants.CLICK_SHADOW_LENGTH)
79          .height(Constants.CLICK_SHADOW_LENGTH)
80          .borderRadius($r('sys.float.ohos_id_corner_radius_clicked'))
81          .alignItems(VerticalAlign.Center)
82          .justifyContent(FlexAlign.Center)
83          .bindMenu(this.MenuBuilder())
84          .backgroundColor(this.isMore ? $r('sys.color.interactive_click') : '')
85          .onTouch(event => {
86            if (event === undefined) {
87              return;
88            }
89            if (event.type === TouchType.Down) {
90              this.isMore = true;
91            }
92            if (event.type === TouchType.Up) {
93              this.isMore = false;
94            }
95          })
96        }
97      }
98      .margin({ left: Constants.DEFAULT_MARGIN_START, right: Constants.DEFAULT_MARGIN_END })
99    }
100    .height(Constants.BACKBAR_HEIGHT)
101    .constraintSize({ minHeight: Constants.BACKBAR_MINHEIGHT })
102    .alignItems(HorizontalAlign.Start)
103    .justifyContent(FlexAlign.Center)
104    .backgroundColor($r('sys.color.background_secondary'))
105  }
106
107  @Builder MenuBuilder() {
108    Flex({ direction: FlexDirection.Column, justifyContent: FlexAlign.Center, alignItems: ItemAlign.Center }) {
109      Row() {
110        Text($r('app.string.permission_access_record'))
111          .fontSize(Constants.TEXT_MIDDLE_FONT_SIZE)
112          .fontWeight(FontWeight.Medium)
113          .fontColor($r('sys.color.font_primary'))
114      }.constraintSize({ minWidth: Constants.MAXIMUM_HEADER_WIDTH })
115      .height(Constants.LISTITEM_ROW_HEIGHT)
116      .padding({ left: $r('sys.float.ohos_id_card_margin_start'), right: $r('sys.float.ohos_id_card_margin_end') })
117      .borderRadius($r('sys.float.ohos_id_corner_radius_default_l'))
118      .linearGradient((this.isTouch === 'true') ? {
119          angle: 90,
120          direction: GradientDirection.Right,
121          colors: [['#DCEAF9', 0.0], ['#FAFAFA', 1.0]]
122        } : {
123          angle: 90,
124          direction: GradientDirection.Right,
125          colors: [[$r('sys.color.comp_background_list_card'), 1], [$r('sys.color.comp_background_list_card'), 1]]
126        })
127      .onTouch(event => {
128        if (event === undefined) {
129          return;
130        }
131        if (event.type === TouchType.Down) {
132          this.isTouch = 'true';
133        }
134        if (event.type === TouchType.Up) {
135          this.isTouch = '';
136        }
137      })
138      .onClick(() => {
139        router.pushUrl({ url: 'pages/permission-access-record' })
140      })
141    }
142  }
143}