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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 | 1x 1x 1x 1x 1x 1x 1x | import hub from "./hub"; import { DialogChangedEvent } from "./events"; import FindFiles from "./dialogs/findFiles"; import ErrorDialog from "./dialogs/errorDialog"; import Publish from "./dialogs/publish"; import Refresh from "./dialogs/Refresh"; export type Dialog = | typeof FindFiles | typeof ErrorDialog | typeof Publish | typeof Refresh; export type DialogInstance = InstanceType<Dialog> & { preventNavigation?: () => boolean; }; class DialogSystem { private instance: DialogInstance | null; constructor() { this.instance = null; this.dismissDialog = this.dismissDialog.bind(this); } // invoked by the application once the dialog has been created. notifyDialogInstance(dialog: DialogInstance | null) { this.instance = dialog; } // given a dialog class this will instruct the application to bring up // the dialog and display it. showDialog(dialog: Dialog, options?: unknown, showIfOpen = true) { if (!showIfOpen && this.instance !== null) { return; } // if the current dialog prevents navigation, then we just silently // will not show the dialog. if (!this.preventNavigation()) { hub.emit(new DialogChangedEvent(dialog, options || {})); } } // tells the application to dismiss the current dialog. dismissDialog() { if (!this.preventNavigation()) { hub.emit(new DialogChangedEvent(null)); } } // returns true if the current dialog prevents navigation. private preventNavigation() { return this.instance?.preventNavigation?.(); } } const dialogSystem = new DialogSystem(); export default dialogSystem; |