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{ IJSModule } from \"./IJSModule.js\";\r\n\r\nexport class KeyboardHelpers implements IJSModule {\r\n\r\n    public serviceName: string;\r\n\r\n    private ASSEMBLYNAME;\r\n\r\n    private keyDownSubscriptions: any;\r\n\r\n    public initialize(): boolean {\r\n        this.ASSEMBLYNAME = 'SPCW';\r\n        this.serviceName = \"KeyboardHelpers\";\r\n        this.keyDownSubscriptions = {};\r\n\r\n        window['Keyboard'] = this;\r\n        return true;\r\n    }\r\n\r\n\r\n    public getInputSelection(inputId: string): number[] {\r\n        let input = document.getElementById(inputId) as HTMLInputElement;\r\n\r\n        let selection = null;\r\n\r\n        if (input != null && input != undefined) {\r\n            selection = [input.selectionStart, input.selectionEnd];\r\n        }\r\n\r\n        return selection;\r\n    }\r\n\r\n\r\n    public isAllTextInInputSelected(inputId: string): boolean {\r\n        let input = document.getElementById(inputId) as HTMLInputElement;\r\n\r\n        if (input != null && input != undefined && input.value.length > 0) {\r\n            return input.selectionStart == 0 && input.selectionEnd == input.value.length;\r\n        }\r\n\r\n        return false;\r\n    }\r\n\r\n\r\n    public subscribeOnKeyDown(inputId: string, handler: any) {\r\n        let input = document.getElementById(inputId);\r\n\r\n        if (input != null && input != undefined) {\r\n\r\n            let s = this.keyDownSubscriptions[inputId];\r\n            if (s) {\r\n                this.unsubscribeOnKeyDownInternal(input, s);\r\n            }\r\n\r\n            var x = new KeyboardSubscription();\r\n            x.id = inputId;\r\n            x.onKeyDown = (e: KeyboardEvent) => this.handleKeyDownEvent(e, handler);\r\n            x.handler = handler;\r\n\r\n            this.keyDownSubscriptions[inputId] = x;\r\n            input.addEventListener('keydown', x.onKeyDown);\r\n        }\r\n    }\r\n\r\n    public subscribeOnKeyDownPreventDefault(inputId: string, handler: any) {\r\n        let input = document.getElementById(inputId);\r\n\r\n        if (input != null && input != undefined) {\r\n\r\n            let s = this.keyDownSubscriptions[inputId];\r\n            if (s) {\r\n                this.unsubscribeOnKeyDownInternal(input, s);\r\n            }\r\n\r\n            var x = new KeyboardSubscription();\r\n            x.id = inputId;\r\n            x.onKeyDown = (e: KeyboardEvent) => this.handleKeyDownEventPreventDefault(e, handler);\r\n            x.handler = handler;\r\n\r\n            this.keyDownSubscriptions[inputId] = x;\r\n            input.addEventListener('keydown', x.onKeyDown);\r\n        }\r\n    }\r\n\r\n    public unsubscribeOnKeyDown(inputId: string) {\r\n        let input = document.getElementById(inputId);\r\n        let s = this.keyDownSubscriptions[inputId];\r\n        this.unsubscribeOnKeyDownInternal(input, s);\r\n    }\r\n\r\n    private unsubscribeOnKeyDownInternal(input: HTMLElement, subscription: KeyboardSubscription) {\r\n        if (input && subscription) {\r\n            input.removeEventListener('keydown', subscription.onKeyDown);\r\n        }\r\n    }\r\n\r\n    private handleKeyDownEvent(e: KeyboardEvent, handler: any) {\r\n        switch (e.key) {\r\n            case 'Tab': {\r\n                e.preventDefault();\r\n                break;\r\n            }\r\n            case 'Backspace': {\r\n                e.preventDefault();\r\n                break;\r\n            }\r\n            case 'Delete': {\r\n                e.preventDefault();\r\n                break;\r\n            }\r\n        }\r\n\r\n        if (handler) {\r\n            handler.invokeMethodAsync('KeyboardInputOnKeyDownHandler', e.key);\r\n        }\r\n    };\r\n\r\n    private handleKeyDownEventPreventDefault(e: KeyboardEvent, handler: any) {\r\n        e.preventDefault();\r\n\r\n        if (handler) {\r\n            handler.invokeMethodAsync('KeyboardInputOnKeyDownHandler', e.key);\r\n        }\r\n    };\r\n\r\n}\r\n\r\nexport class KeyboardSubscription {\r\n    public id: string;\r\n    public onKeyDown: any;\r\n    public handler: any;\r\n}\r\n"]}