本页提供《仓颉编程基础及应用》第1版，14.5节index.cj.macrocall文件的全文。

版权声明

本文可以在互联网上自由转载，但必须：注明出处(作者：海洋饼干叔叔)并包含指向本页面的链接。

本文不可以以纸质出版为目的进行改编、摘抄。

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
package ohos_app_cangjie_entry

internal import ohos.base.LengthProp
internal import ohos.component.Column
internal import ohos.component.Row
internal import ohos.component.Button
internal import ohos.component.Text
internal import ohos.component.CustomView
internal import ohos.component.CJEntry
internal import ohos.component.loadNativeView
internal import ohos.state_manage.SubscriberManager
internal import ohos.state_manage.ObservedProperty
internal import ohos.state_manage.LocalStorage
import ohos.state_macro_manage.Entry
import ohos.state_macro_manage.Component
import ohos.state_macro_manage.State
import ohos.state_macro_manage.r
import std.random.Random

/* ===== Emitted by MacroCall @Entry in index.cj:20:1 ===== */
/* 20.1 */class EntryView <: CustomView {
/* 20.2 */    let messages =["Hello World", "你好，世界!", "Hei maailma", "Hola Mundo", "Привет мир", "Hallo Welt"]
/* 20.3 */    private var stateVarDecl_message_: ObservedProperty < String >= ObservedProperty < String >("stateVarDecl_message_", messages[0])
/* 20.4 */    private mut prop message: String {
/* 20.5 */        get() {
/* 20.6 */            return this.stateVarDecl_message_.get()
/* 20.7 */        }
/* 20.8 */        set(v) {
/* 20.9 */            this.stateVarDecl_message_.set(v)
/* 20.10 */        }
/* 20.11 */    }
/* 20.12 */    public func build() {
/* 20.13 */        this.observeComponentCreation({ elmtId, isInitialRender => Row { this.observeComponentCreation({ elmtId, isInitialRender => Column { this.observeComponentCreation({ elmtId, isInitialRender => Text(message).fontSize(40).height(80) })
/* 20.14 */        this.observeComponentCreation({ elmtId, isInitialRender => Button("Hello").onClick { evt => message = messages[Random().nextInt64(messages.size)] }.fontSize(40).height(80).margin(top: 100) }) }.width(100.percent) }) }.height(100.percent) })
/* 20.15 */        ()
/* 20.16 */    }
/* 20.17 */    public init(parent: Option < CustomView >, message!: Option < ObservedProperty < String >>= None, localStorage!: Option < LocalStorage >= None) {
/* 20.18 */        super(parent, localStorage)
/* 20.19 */        match(message) {
/* 20.20 */            case Some(v) => this.stateVarDecl_message_ = ObservedProperty < String >("stateVarDecl_message_", v.get())
/* 20.21 */            case _ =>()
/* 20.22 */        }
/* 20.23 */        this.stateVarDecl_message_.subscribeEx(this)
/* 20.24 */        SubscriberManager.getInstance().add(this)
/* 20.25 */        registerSelf()
/* 20.26 */        parent?.addChildById(id(), this)
/* 20.27 */    }
/* 20.28 */    public override func aboutToBeDeleted() {
/* 20.29 */        this.stateVarDecl_message_.unsubscribeEx(this)
/* 20.30 */        SubscriberManager.getInstance().delete(this)
/* 20.31 */        this.aboutToBeDeletedInternal()
/* 20.32 */    }
/* 20.33 */    func updateWithValueParams(message!: Option < String >= Option < String >.None): Unit {
/* 20.34 */        match(message) {
/* 20.35 */            case Some(v) => this.message = v
/* 20.36 */            case _ =>()
/* 20.37 */        }
/* 20.38 */    }
/* 20.39 */    public func rerender() {
/* 20.40 */        this.updateDirtyElements()
/* 20.41 */    }
/* 20.42 */    public func purgeVariableDependenciesOnElmtId(rmElmtId: Int64) {
/* 20.43 */        this.stateVarDecl_message_.purgeDependencyOnElmtId(rmElmtId)
/* 20.44 */    }
/* 20.45 */    public func forceRerender(deep!: Bool = false) {
/* 20.46 */        this.forceCompleteRerender(deep)
/* 20.47 */    }
/* 20.48 */}
/* 20.49 */
/* 20.50 */public func appEntry_0(): Bool {
/* 20.51 */    let view = EntryView(Option < CustomView >.None)
/* 20.52 */    loadNativeView(view)
/* 20.53 */}
/* 20.54 */
/* 20.55 */let a_p_1 = CJEntry.getInstance().registerEntry("EntryView", appEntry_0)
/* 20.56 */
/* ===== End of the Emit ===== */

  仓颉 鸿蒙