/// <summary>
/// Render the dialog according to the context.
/// </summary>
void OnGUI() {
// Close the window if Option0String is empty.
// After Unity reload assemblies, the EditorWindow will remain open but all the content
// in the dialog will be cleared because dialogContext is not serializable. Therefore,
// close the dialog after assembly reload. Close in the next editor frame or it may
// generate error message like "OpenGL Context became invalid during rendering".
// This is for Unity 5.
if (String.IsNullOrEmpty(dialogContext.Option0String) && !terminating) {
terminating = true;
RunOnMainThread.Run(() => {
Close();
}, runNow: false);
}
InitializeStyles();
Rect rect = EditorGUILayout.BeginVertical();
if (!String.IsNullOrEmpty(dialogContext.Title)) {
GUILayout.Label(dialogContext.Title, EditorStyles.boldLabel);
EditorGUILayout.Space();
}
// Render the dialog message.
GUILayout.Label(dialogContext.Message, DefaultMessageStyle);
EditorGUILayout.Space();
// Render the additional context.
if (dialogContext.RenderContentAction != null) {
dialogContext.RenderContentAction(this);
EditorGUILayout.Space();
}
EditorGUILayout.BeginHorizontal();
// Render additional buttons before the option buttons.
if (dialogContext.RenderButtonsAction != null) {
dialogContext.RenderButtonsAction(this);
}
// Render option buttons.
RenderOptionButtons();
EditorGUILayout.EndHorizontal();
EditorGUILayout.EndVertical();
// Adjust the dialog window size according to the rendered content.
// Rect returned by BeginVertical() can be zeroes for a couple of frames, therefore
// ignoring resizing for those frames.
if (rect.width != 0.0f && rect.height != 0.0f) {
// Additional space at the bottom of the window.
const float FILLER_WINDOWS_HEIGHT = 15.0f;
float windowHeight = rect.height + FILLER_WINDOWS_HEIGHT;
minSize = new Vector2(dialogContext.WindowWidth, windowHeight);
maxSize = new Vector2(dialogContext.WindowWidth, windowHeight);
}
}