openharmony launcher 调研笔记（02）UI 调用逻辑

最近在看launcher，把自己调研的点做个笔记，持续修改更新中，个人笔记酌情参考。

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EntryView

Column() {
PageDesktopLayout();
}
.height(this.workSpaceHeight)

// this.mWorkSpaceHeight = this.mScreenHeight - this.mSysUIBottomHeight - this.mDockHeight; 工作区的高度等于屏幕高度 - 底部控制按钮区域高度 - Dock栏高度

Column() {
SmartDock();
}
.height(this.dockHeight) //dock栏高度

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PageDesktopLayout

aboutToAppear

this.deviceType = AppStorage.get('deviceType') as string; // 设备类型 phone

this.mPageDesktopDragHandler = PageDesktopDragHandler.getInstance();// 获取Drag相关类

mPageDesktopViewModel = PageDesktopViewModel.getInstance();// 构造函数初始化很多数据

PageDesktopViewModel 构造

this.mPageDesktopModel = PageDesktopModel.getInstance();// 桌面model
this.mFolderModel = BigFolderModel.getInstance(); // 文件夹model
this.mFormModel = FormModel.getInstance(); // 卡片model
this.mSettingsModel = SettingsModel.getInstance(); // launcher 设置model
this.mBadgeManager = BadgeManager.getInstance(); // 角标管理器
this.mFormListInfoCacheManager = FormListInfoCacheManager.getInstance();

                         // 卡片缓存数据管理类
                    this.mSettingsModel.forceReloadConfig(); // 强制从磁盘重新加载所有配置
this.mSettingsModel.addObserver(this.mSettingsChangeObserver);
this.onPageDesktopCreate(); // 注册监听
this.mGridConfig = this.getGridConfig(); // 获得网格配置
this.pageDesktopStyleConfig = // 获取桌面显示样式配置

layoutConfigManager.getStyleConfig(

PageDesktopGridStyleConfig.APP_GRID_STYLE_CONFIG,

PageDesktopConstants.FEATURE_NAME);
this.formDetailLayoutConfig = // 获取卡片布局详细配置

layoutConfigManager.getStyleConfig(

FormDetailLayoutConfig.FORM_LAYOUT_INFO,

PageDesktopConstants.FEATURE_NAME);

PageDesktopViewModel 构造

this.gridConfig = mPageDesktopViewModel.getGridConfig().layout;

// 获取布局的 （??此处没搞明白为什么是 -1X0 ，代码逻辑上应该是4X4

且 SettingsModel.getGridConfig执行了四次）

mPageDesktopViewModel.registerAppListChangeCallback(); // 注册 app 列表变化监听

CloseAppManager.getInstance().registerCloseAppHandler(

new PageDesktopCloseAppHandler()); // 注册app 关闭监听

进入build

GridSwiper({
gridConfig: this.gridConfig,
mPageDesktopViewModel: mPageDesktopViewModel,
dialogController: this.deviceType == CommonConstants.PAD_DEVICE_TYPE ? null : this.dialogController
}).id(`${TAG}`)
.width(StyleConstants.PERCENTAGE_100)
.height(StyleConstants.PERCENTAGE_100)
}

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GridSwiper

aboutToAppear

this.mPageDesktopViewModel = PageDesktopViewModel.getInstance();

// 显示桌面model

this.mPageDesktopViewModel.setSwiperController(this.swiperController);

// 设置swiperController

buildLog //if (this.buildLog()) {}

// 此处为false ，AppStorage.get('isDesktopLoadFinished')此时还未被设置为true

if (this.desktopLoadFinished) {

// 此处第一次加载时未被初始化为 ture

// 直到dock 初始化完成后发送了 SMARTDOCK_INIT_FINISHED 事件触发