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My box closes when clicking outside of the box making me lose all the input. I want my box to close only when clicking on the cancel button. I am not sure what is making it close when clicking outside. Any help?

I am using @material-ui/core

  _close() {
        DeviceCreationActions.close();
    }

render() {
        const actions = [
            <Button
                id="device-create-dialog-close"
                key="device-create-dialog-close"
                onClick={this._close}
            >
              {this.context.intl.formatMessage({id: 'Cancel'})}
            </Button>
        ];

        if (0 < this.state.stepIndex) {
            actions.push(<Button
                id="device-create-dialog-back"
                key="device-create-dialog-back"
                onClick={this._previousStep.bind(this)}
              >
                {this.context.intl.formatMessage({id: 'Back'})}
              </Button>
            );
        }

        if (
            (1 >= this.state.stepIndex && 0 < this.state['formStep' + this.state.stepIndex].length) ||
            (0 < this.state.stepIndex)
        ) {
            actions.push(<Button
                id="device-create-dialog-next"
                key="device-create-dialog-next"
                onClick={2 === this.state.stepIndex ? this._save.bind(this) : this._nextStep.bind(this)}
              >
                {this.context.intl.formatMessage({id: 2 === this.state.stepIndex ? 'Create' : 'Next'})}
              </Button>
            );
        }

Answers

I think what you need is disableBackdropClick passed down to <Modal /> component

<Modal disableBackdropClick />

You can also disable close Dialog on Esc key press with disableEscapeKeyDown prop