void OnGUI()
{
if (_isInitTabButton)
{
MissionTabButtonStyle = new GUIStyle(SampleStyle.GetButtonStyle(SampleStyle.ButtonType.Left, SampleStyle.ButtonColor.Blue));
SpaceTabButtonStyle = new GUIStyle(SampleStyle.GetButtonStyle(SampleStyle.ButtonType.Right, SampleStyle.ButtonColor.Blue));
_isInitTabButton = false;
}
SampleStyle.DrawWindowBackground(SampleStyle.ColorGrey);
// Buttons for switching mission graph and space graph.
GUILayout.BeginVertical(SampleStyle.Frame(SampleStyle.ColorLightestGrey));
LayoutStateButtons();
// Dropdown for strating node.
int startingIndex = Mission.Alphabet.Nodes.FindIndex(n => n == Mission.Alphabet.StartingNode);
startingIndex = SampleStyle.PopupLabeled(Languages.GetText("GenerateMission-StartingNode"), startingIndex, Mission.Alphabet.Nodes.Select(n => n.ExpressName).ToArray(), SampleStyle.PopUpLabel, SampleStyle.PopUp, Screen.width - 15);
Mission.Alphabet.StartingNode = Mission.Alphabet.Nodes[startingIndex];
GUILayout.EndVertical();
// Canvas to draw current mission graph.
LayoutMissionGraphCanvas();
// Layout the list of mission group.
LayoutMissionGroupList();
// Buttons for operating the graph.
LayoutFunctionButtons();
}
