All files validation_rule.ts

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100% Branches 1/1
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/* --------------------------------------------------------------------------
 
    howerest 2018 - <hola@davidvalin.com> | www.howerest.com
 
    Apache 2.0 Licensed
    -------------------
 
    ValidationRule: represents a validation rule
 
--------------------------------------------------------------------------- */
 
export class ValidationRule<IParams = {}> implements IValidationRule {
  protected conditions: Array<Function|any> = [];
  public fromValue:any;
  public toValue:any
  public params: IParams
  private _invalidMessage = "Invalid";
 
  constructor(params?:any) {
    this.params = params;
    this._invalidMessage = "";
  }
 
  /**
   * Retrieves the invalid message for the ValidationRule
   */
  get invalidMessage(): string {
    return this._invalidMessage;
  }
 
  /**
   * Checks if the ValidationRule is valid
   */
  public isValid(fromValue:any, toValue:any): boolean {
    this.fromValue = fromValue;
    this.toValue = toValue;
 
    // Reset the invalid message
    this._invalidMessage = '';
 
    for(let i=0; i < this.conditions.length; i++) {
      if (this.conditions[i]() === false) {
        return false;
      }
    }
    return true;
  }
 
  /**
   * Adds an invalid message to the ValidationRule
   */
  public addInvalidMessage(message:string) {
    this._invalidMessage += message;
  }
}
 
export interface IValidationRule {
  params: any;
  invalidMessage: string;
 
  isValid(fromValue:any, toValue:any);
}