Dropdown

GnosisUIElementDropdown is a control element (elementId = "Dropdown") backed by TMP_Dropdown.

Attach TMP_Dropdown on the same GameObject (or assign in the inspector). In the editor, if the component is missing, it is auto-added on validate.

Runtime parameters

In addition to built-in element parameters, GnosisUIElementDropdown supports:

• options (list) — option labels. Each entry may be:
  • a string, or
  • an object { "text": "..." }
• selectedIndex (float / int) — 0-based index applied after options are rebuilt (SetValueWithoutNotify, so it does not fire onValueChanged during apply).
• onValueChangedInvokes (list) — service invokes when the user changes the selection. Each row: { service, function, parameters? }.

Each invoke receives an object payload with:

• index (int) — selected index
• text (string) — selected option label

Example — JSON payload shape

{
  "service": "GameUI",
  "function": "CreateElement",
  "parameters": {
    "elementId": "Dropdown",
    "parentId": "ui.SettingsView",
    "parameters": {
      "name": "WindowModeDropdown",
      "options": [
        { "text": "Windowed" },
        { "text": "Fullscreen" },
        { "text": "Borderless" }
      ],
      "selectedIndex": 0.0,
      "onValueChangedInvokes": [
        {
          "service": "Setting",
          "function": "SetDropdown",
          "parameters": {
            "key": "settings.windowMode",
            "index": 0
          }
        }
      ]
    }
  }
}

Example — DescribeUIElement

payload.Set("elementId", "Dropdown");
return CallService("GameUI", "DescribeUIElement", payload);