@ -14,6 +14,7 @@ import { setContext } from '../context';
import { executeCommand } from '../system/command' ;
import { debug , logName } from '../system/decorators/log' ;
import { serialize } from '../system/decorators/serialize' ;
import { isPromise } from '../system/promise' ;
import type { IpcMessage , IpcMessageParams , IpcNotificationType , WebviewFocusChangedParams } from './protocol' ;
import { ExecuteCommandType , onIpc , WebviewFocusChangedCommandType , WebviewReadyCommandType } from './protocol' ;
import type { WebviewPanelDescriptor , WebviewViewDescriptor } from './webviewsController' ;
@ -39,18 +40,8 @@ type GetParentType = T
: never ;
export interface WebviewProvider < State , SerializedState = State > extends Disposable {
canShowWebviewPanel ? (
firstTime : boolean ,
options : { column? : ViewColumn ; preserveFocus? : boolean } ,
. . . args : unknown [ ]
) : boolean | Promise < boolean > ;
onShowWebviewPanel ? (
firstTime : boolean ,
options : { column? : ViewColumn ; preserveFocus? : boolean } ,
. . . args : unknown [ ]
) : void | Promise < void > ;
canShowWebviewView ? (
firstTime : boolean ,
onShowing ? (
loading : boolean ,
options : { column? : ViewColumn ; preserveFocus? : boolean } ,
. . . args : unknown [ ]
) : boolean | Promise < boolean > ;
@ -133,6 +124,7 @@ export class WebviewController<
public readonly id : Descriptor [ 'id' ] ;
private _isReady : boolean = false ;
private _suspended : boolean = false ;
get isReady() {
return this . _isReady ;
}
@ -180,6 +172,7 @@ export class WebviewController<
this . provider . onVisibilityChanged ? . ( false ) ;
this . _isReady = false ;
this . _suspended = false ;
this . _onDidDispose . fire ( ) ;
this . disposables . forEach ( d = > void d . dispose ( ) ) ;
@ -231,36 +224,34 @@ export class WebviewController<
return this . parent . visible ;
}
async show ( firstTime boolean , options ? : { column? : ViewColumn ; preserveFocus? : boolean } , . . . args : unknown [ ] ) {
async show ( loading boolean , options ? : { column? : ViewColumn ; preserveFocus? : boolean } , . . . args : unknown [ ] ) {
if ( options == null ) {
options = { } ;
}
if ( this . isEditor ( ) ) {
const result = await this . provider . canShowWebviewPanel ? . ( firstTime , options , . . . args ) ;
if ( result === false ) return ;
if ( firstTim e) {
this . webview . html = await this . getHtml ( this . webview ) ;
const result = this . provider . onShowing ? . ( loading , options , . . . args ) ;
if ( result != null ) {
if ( isPromise ( result ) ) {
if ( ( await result ) === false ) return ;
} else if ( result === fals e) {
return ;
}
}
if ( loading ) {
this . webview . html = await this . getHtml ( this . webview ) ;
}
await this . provider . onShowWebviewPanel ? . ( firstTime , options , . . . args ) ;
if ( ! firstTime ) {
if ( this . isEditor ( ) ) {
if ( ! loading ) {
this . parent . reveal (
options ? . column ? ? this . parent . viewColumn ? ? this . descriptor . column ? ? ViewColumn . Beside ,
options ? . preserveFocus ? ? false ,
options . column ? ? this . parent . viewColumn ? ? this . descriptor . column ? ? ViewColumn . Beside ,
options . preserveFocus ? ? false ,
) ;
}
} else if ( this . isView ( ) ) {
const result = await this . provider . canShowWebviewView ? . ( firstTime , options , . . . args ) ;
if ( result === false ) return ;
if ( firstTime ) {
this . webview . html = await this . getHtml ( this . webview ) ;
}
await executeCommand ( ` ${ this . id } .focus ` , options ) ;
if ( firstTime ) {
if ( loading ) {
this . provider . onVisibilityChanged ? . ( true ) ;
}
}
@ -281,6 +272,8 @@ export class WebviewController<
// Mark the webview as not ready, until we know if we are changing the html
this . _isReady = false ;
this . _suspended = false ;
const html = await this . getHtml ( this . webview ) ;
if ( force ) {
// Reset the html to get the webview to reload
@ -310,6 +303,7 @@ export class WebviewController<
case WebviewReadyCommandType . method :
onIpc ( WebviewReadyCommandType , e , ( ) = > {
this . _isReady = true ;
this . _suspended = false ;
this . provider . onReady ? . ( ) ;
} ) ;
@ -351,6 +345,20 @@ export class WebviewController<
} )
private onParentViewStateChanged ( e : WebviewPanelOnDidChangeViewStateEvent ) : void {
const { active , visible } = e . webviewPanel ;
if ( this . descriptor . webviewHostOptions ? . retainContextWhenHidden !== true ) {
if ( visible ) {
if ( this . _suspended ) {
this . _isReady = true ;
this . _suspended = false ;
this . provider . onReady ? . ( ) ;
}
} else {
this . _isReady = false ;
this . _suspended = true ;
}
}
if ( visible ) {
setContextKeys ( this . descriptor . contextKeyPrefix , active ) ;
this . provider . onActiveChanged ? . ( active ) ;
@ -369,6 +377,19 @@ export class WebviewController<
@debug ( )
private onParentVisibilityChanged ( visible : boolean ) {
if ( this . descriptor . webviewHostOptions ? . retainContextWhenHidden !== true ) {
if ( visible ) {
if ( this . _suspended ) {
this . _isReady = true ;
this . _suspended = false ;
this . provider . onReady ? . ( ) ;
}
} else {
this . _isReady = false ;
this . _suspended = true ;
}
}
if ( visible ) {
void this . container . usage . track ( ` ${ this . descriptor . trackingFeature } :shown ` ) ;
} else {
@ -454,14 +475,15 @@ export class WebviewController<
0 : m = > ` {"id": ${ m . id } ,"method": ${ m . method } ${ m . completionId ? ` ,"completionId": ${ m . completionId } ` : '' } } ` ,
} ,
} )
postMessage ( message : IpcMessage ) : Promise < boolean > {
async postMessage ( message : IpcMessage ) : Promise < boolean > {
if ( ! this . _isReady ) return Promise . resolve ( false ) ;
// It looks like there is a bug where `postMessage` can sometimes just hang infinitely. Not sure why, but ensure we don't hang
return Promise . race < boolean > ( [
const success = await Promise . race < boolean > ( [
this . webview . postMessage ( message ) ,
new Promise < boolean > ( resolve = > setTimeout ( resolve , 5000 , false ) ) ,
] ) ;
return success ;
}
}
Eric Amodio
1 年之前