wekan/client/components/swimlanes/swimlaneHeader.js

BlazeComponent.extendComponent({
  editTitle(evt) {
    evt.preventDefault();
    const newTitle = this.childComponents('inlinedForm')[0].getValue().trim();
    const swimlane = this.currentData();
    if (newTitle) {
      swimlane.rename(newTitle.trim());
    }
  },

  events() {
    return [{
      submit: this.editTitle,
    }];
  },
}).register('swimlaneHeader');