{
  "elements": [
    {
      "type": "Label",
      "caption": "Einstellungen für Abrechnung"
    },
    {
      "type": "ExpansionPanel",
      "caption": "Stammdaten",
      "items": [
        {
          "type": "Row",
          "items": [
            {
              "type": "Column",
              "items": [
                {
                  "type": "List",
                  "name": "Users",
                  "caption": "Benutzer (Empfänger)",
                  "add": true,
                  "columns": [
                    { "caption": "ID", "name": "id", "width": "10%" },
                    { "caption": "Name", "name": "name", "width": "35%" },
                    { "caption": "E-Mail", "name": "email", "width": "35%" },
                    { "caption": "Adresse", "name": "address", "width": "20%" }
                  ],
                  "rowProperties": [
                    { "label": "Name", "name": "name", "type": "TextBox" },
                    { "label": "E-Mail", "name": "email", "type": "TextBox" },
                    { "label": "Adresse", "name": "address", "type": "TextBox" },
                    { "label": "Benutzer-ID (frei)", "name": "id", "type": "ValidationTextBox" }
                  ]
                }
              ]
            },
            {
              "type": "Column",
              "items": [
                {
                  "type": "List",
                  "name": "Meters",
                  "caption": "Zähler",
                  "add": true,
                  "columns": [
                    { "caption": "ID", "name": "id", "width": "10%" },
                    { "caption": "Name", "name": "name", "width": "30%" },
                    { "caption": "IPS-VariableID", "name": "variableid", "width": "30%" },
                    { "caption": "Benutzer-ID", "name": "user_id", "width": "15%" },
                    { "caption": "Einheit", "name": "unit", "width": "15%" }
                  ],
                  "rowProperties": [
                    { "label": "Name", "name": "name", "type": "TextBox" },
                    { "label": "IPS-VariableID (Zählerstand)", "name": "variableid", "type": "ValidationTextBox" },
                    { "label": "Zugehöriger Benutzer-ID", "name": "user_id", "type": "ValidationTextBox" },
                    { "label": "Einheit (z.B. kWh)", "name": "unit", "type": "TextBox" },
                    { "label": "Zähler-ID (frei)", "name": "id", "type": "ValidationTextBox" }
                  ]
                }
              ]
            }
          ]
        }
      ]
    },
    {
      "type": "ExpansionPanel",
      "caption": "Abrechnung (Schnellstart)",
      "items": [
        {
          "type": "Row",
          "items": [
            {
              "type": "Column",
              "items": [
                {
                  "type": "DateTimePicker",
                  "name": "from",
                  "caption": "Von",
                  "format": "yyyy-MM-dd HH:mm"
                },
                {
                  "type": "DateTimePicker",
                  "name": "to",
                  "caption": "Bis",
                  "format": "yyyy-MM-dd HH:mm"
                },
                {
                  "type": "NumberSpinner",
                  "name": "work_price",
                  "caption": "Arbeitspreis (pro Einheit)",
                  "digits": 4,
                  "minimum": 0
                },
                {
                  "type": "NumberSpinner",
                  "name": "fixed_fee",
                  "caption": "Fixbetrag pro Benutzer (optional)",
                  "digits": 2,
                  "minimum": 0
                },
                {
                  "type": "Button",
                  "caption": "Abrechnung erzeugen (PDF)",
                  "onClick": "GenerateInvoices"
                },
                {
                  "type": "Label",
                  "name": "result",
                  "caption": ""
                }
              ]
            }
          ]
        }
      ]
    }
  ]
}