In addition to any other limitation under this Part III of this subtitle, a court may not issue a temporary or permanent injunction in a case that involves or grows out of a labor dispute unless: each known person against whom relief is sought and each public officer who has a duty to protect the property of the plaintiff is given, in the manner that the court directs, personal notice that the court will hold a hearing on issuance of a temporary or permanent injunction; at the hearing, the court takes, in open court, testimony offered against the temporary or permanent injunction and affords the opportunity for cross-examination; and as a result of the hearing, the court finds that: an unlawful act: has been threatened and, unless restrained, will be committed; or has been committed and, unless restrained, will be continued; unless it grants the relief requested, the property of the plaintiff will be injured substantially and irreparably; greater injury will be inflicted on the plaintiff for each item of relief that the court denies than will be inflicted on the defendant if the court grants the item; it is not granting any item of relief for which a court lacks jurisdiction under § 4-307 of this subtitle; the plaintiff has no adequate remedy at law; and each public officer who has a duty to protect the property of the plaintiff has failed or is unable to give adequate protection.