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import { common } from '@kit.AbilityKit';
import display from '@ohos.display';
import deviceInfo from '@ohos.deviceInfo';
import promptAction from '@ohos.promptAction';
interface ServoXComponentInterface {
loadURL(url: string): void;
goBack(): void;
goForward(): void;
registerURLcallback(callback: (url: string) => void): void;
registerPromptToastCallback(callback: (msg: string) => void): void
initServo(options: InitOpts): void;
}
interface InitOpts {
url: string;
deviceType: string,
osFullName: string,
resourceDir: string,
cacheDir: string,
displayDensity: number,
commandlineArgs: string,
}
function get_density(): number {
try {
let displayClass = display.getDefaultDisplaySync();
console.info('Test densityDPI:' + JSON.stringify(displayClass.densityDPI));
return displayClass.densityDPI / 160;
} catch (exception) {
console.error('Failed to obtain the default display object. Code: ' + JSON.stringify(exception));
return 3;
}
}
function get_device_type(): string {
let device_type: string = deviceInfo.deviceType;
if (device_type == "") {
console.error("deviceInfo.deviceType is empty string!")
} else {
console.info("Device type is " + device_type)
}
return device_type;
}
function prompt_toast(msg: string) {
promptAction.showToast({
message: msg,
duration: 2000
});
}
// Use the getShared API to obtain the LocalStorage instance shared by stage.
let storage = LocalStorage.getShared()
@Entry(storage)
@Component
struct Index {
xComponentContext: ServoXComponentInterface | undefined = undefined;
xComponentAttrs: XComponentAttrs = {
id: 'ServoDemo',
type: XComponentType.SURFACE,
libraryname: 'servoshell',
}
private context = getContext(this) as common.UIAbilityContext;
@LocalStorageProp('InitialURI') InitialURI: string = "unused"
@LocalStorageProp('CommandlineArgs') CommandlineArgs: string = ""
@State urlToLoad: string = this.InitialURI
// Called when the user swipes from the right or left edge to the middle
// Default behavior is bringing the app to the background.
onBackPress(): boolean | void {
this.xComponentContext?.goBack()
return true;
}
build() {
// We originally use `Column()` here, but for some reason the column
// extends beyond the edge of the screen. This does not happen with
// Flex.
Flex({ direction: FlexDirection.Column}) {
Row() {
Button('⇦').backgroundColor(Color.White)
.fontColor(Color.Black)
.fontWeight(FontWeight.Bolder)
.width('12%')
.fontSize(12)
.onClick(()=>{
this.onBackPress()
})
Button('⇨').backgroundColor(Color.White)
.fontColor(Color.Black)
.fontWeight(FontWeight.Bolder)
.fontSize(12)
.width('12%')
.onClick(()=> {
this.xComponentContext?.goForward()
})
TextInput({placeholder:'URL',text: $$this.urlToLoad})
.type(InputType.Normal)
.width('76%')
.onChange((value) => {
this.urlToLoad = value
})
.onSubmit((EnterKeyType)=>{
this.xComponentContext?.loadURL(this.urlToLoad)
console.info('Load URL: ', this.urlToLoad)
})
}
XComponent(this.xComponentAttrs)
.focusable(true)
.onLoad((xComponentContext) => {
this.xComponentContext = xComponentContext as ServoXComponentInterface;
let resource_dir: string = this.context.resourceDir;
let cache_dir: string = this.context.cacheDir;
console.debug("resourceDir: ", resource_dir);
console.debug("cacheDir: ", cache_dir);
let init_options: InitOpts = {
url: this.urlToLoad,
deviceType: get_device_type(),
osFullName: deviceInfo.osFullName,
displayDensity: get_density(),
resourceDir: resource_dir,
cacheDir: cache_dir,
commandlineArgs: this.CommandlineArgs
}
this.xComponentContext.initServo(init_options)
this.xComponentContext.registerURLcallback((new_url) => {
console.info('New URL from native: ', new_url)
this.urlToLoad = new_url
})
this.xComponentContext.registerPromptToastCallback(prompt_toast)
})
}
.width('100%')
}
}
interface XComponentAttrs {
id: string;
type: number;
libraryname: string;
}
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