/// <summary>
/// Instantiates the dropdown object and expands it.
/// </summary>
public void Show()
{
Canvas rootCanvas = m_BaseTransform.GetRootCanvas();
rootCanvas.CopySettingsToOtherCanvas(m_DropdownCanvas);
m_DropdownCanvas.pixelPerfect = true;
m_DropdownCanvas.sortingOrder = 30000;
m_DropdownPanel = PrefabManager.InstantiateGameObject(PrefabManager.ResourcePrefabs.dropdownPanel, m_DropdownCanvas.transform).GetComponent <RectTransform>();
m_PanelLayer = m_DropdownPanel.GetChildByName <RectTransform>("PanelLayer");
m_DropdownCanvasGroup = m_DropdownPanel.GetComponent <CanvasGroup>();
m_ShadowCanvasGroup = m_DropdownPanel.GetChildByName <CanvasGroup>("Shadow");
m_DropdownPanel.GetRootCanvas().scaleFactor = rootCanvas.scaleFactor;
m_CancelPanel = m_DropdownPanel.GetChildByName <RectTransform>("Cancel Panel");
m_CancelPanel.sizeDelta = scaler.canvas.pixelRect.size * 2;
DropdownTrigger trigger = m_DropdownPanel.gameObject.GetChildByName <DropdownTrigger>("Cancel Panel");
trigger.index = -1;
trigger.dropdown = this;
m_DropdownPanel.gameObject.GetChildByName <Image>("ScrollRect").color = m_PanelColor;
m_ListItemTemplate = new DropdownListItem();
m_ListItemTemplate.rectTransform = m_DropdownPanel.GetChildByName <RectTransform>("Item");
m_ListItemTemplate.canvasGroup = m_ListItemTemplate.rectTransform.GetComponent <CanvasGroup>();
m_ListItemTemplate.text = m_ListItemTemplate.rectTransform.GetChildByName <Text>("Text");
if (m_OptionDataList.imageType == ImageDataType.Sprite)
{
m_ListItemTemplate.image = m_ListItemTemplate.rectTransform.GetChildByName <Image>("Icon");
Destroy(m_ListItemTemplate.rectTransform.GetChildByName <VectorImage>("Icon").gameObject);
}
else
{
m_ListItemTemplate.image = m_ListItemTemplate.rectTransform.GetChildByName <VectorImage>("Icon");
Destroy(m_ListItemTemplate.rectTransform.GetChildByName <Image>("Icon").gameObject);
}
m_ListItems = new List <DropdownListItem>();
for (int i = 0; i < m_OptionDataList.options.Count; i++)
{
m_ListItems.Add(CreateItem(m_OptionDataList.options[i], i));
}
for (int i = 0; i < m_ListItems.Count; i++)
{
Selectable selectable = m_ListItems[i].rectTransform.GetComponent <Selectable>();
Navigation navigation = new Navigation();
navigation.mode = Navigation.Mode.Explicit;
if (i > 0)
{
navigation.selectOnUp = m_ListItems[i - 1].rectTransform.GetComponent <Selectable>();
}
if (i < m_ListItems.Count - 1)
{
navigation.selectOnDown = m_ListItems[i + 1].rectTransform.GetComponent <Selectable>();
}
selectable.navigation = navigation;
}
if (m_BaseSelectable != null)
{
if (m_ListItems.Count > 0)
{
Navigation navigation = Navigation.defaultNavigation;
navigation.selectOnDown = m_ListItems[0].rectTransform.GetComponent <Selectable>();
m_BaseSelectable.navigation = navigation;
}
}
float maxWidth = CalculateMaxItemWidth();
float buttonWidth = m_BaseTransform.rect.width;
m_FullHeight = m_OptionDataList.options.Count * LayoutUtility.GetPreferredHeight(m_ListItemTemplate.rectTransform) + 16;
m_ExpandedSize = new Vector2(Mathf.Max(maxWidth, buttonWidth), m_FullHeight);
m_TempMaxHeight = m_MaxHeight;
if (m_TempMaxHeight == 0)
{
m_TempMaxHeight = MaterialUIScaler.GetRootScaler(m_DropdownPanel).canvas.GetComponent <RectTransform>().rect.height - 32;
}
if (m_ExpandedSize.y > m_TempMaxHeight)
{
m_ExpandedSize.y = m_TempMaxHeight;
}
else
{
m_DropdownPanel.GetChildByName <Image>("Handle").gameObject.SetActive(false);
}
Destroy(m_ListItemTemplate.rectTransform.gameObject);
m_DropdownPanel.position = m_BaseTransform.GetPositionRegardlessOfPivot();
if (m_ExpandStartType == ExpandStartType.ExpandFromBaseTransformWidth)
{
if (m_VerticalPivotType == VerticalPivotType.BelowBase)
{
m_DropdownPanel.position = new Vector3(m_DropdownPanel.position.x, m_DropdownPanel.position.y - m_BaseTransform.GetProperSize().y / 2, m_DropdownPanel.position.z);
}
else if (m_VerticalPivotType == VerticalPivotType.AboveBase)
{
m_DropdownPanel.position = new Vector3(m_DropdownPanel.position.x, m_DropdownPanel.position.y + m_BaseTransform.GetProperSize().y / 2, m_DropdownPanel.position.z);
}
}
m_ExpandedPosition = CalculatedPosition();
m_ExpandedPosition.z = m_BaseTransform.position.z;
m_DropdownCanvasGroup.alpha = 0f;
m_ShadowCanvasGroup.alpha = 0f;
if (m_ExpandStartType == ExpandStartType.ExpandFromBaseTransformWidth)
{
m_DropdownPanel.sizeDelta = new Vector2(m_BaseTransform.rect.size.x, 0f);
}
else if (m_ExpandStartType == ExpandStartType.ExpandFromBaseTransformHeight)
{
m_DropdownPanel.sizeDelta = new Vector2(0f, m_BaseTransform.rect.size.y);
}
else if (m_ExpandStartType == ExpandStartType.ExpandFromBaseTransformSize)
{
m_DropdownPanel.sizeDelta = m_BaseTransform.rect.size;
}
else
{
m_DropdownPanel.sizeDelta = Vector2.zero;
}
m_DropdownPanel.gameObject.SetActive(true);
for (int i = 0; i < m_ListItemAutoTweeners.Count; i++)
{
TweenManager.EndTween(m_ListItemAutoTweeners[i]);
}
m_AutoTweeners = new List <int>();
m_ListItemAutoTweeners = new List <int>();
m_AutoTweeners.Add(TweenManager.TweenFloat(f => m_DropdownCanvasGroup.alpha = f, m_DropdownCanvasGroup.alpha, 1f, m_AnimationDuration * 0.66f, 0, null, false, Tween.TweenType.Linear));
m_AutoTweeners.Add(TweenManager.TweenFloat(f => m_ShadowCanvasGroup.alpha = f, m_ShadowCanvasGroup.alpha, 1f, m_AnimationDuration * 0.66f, 0, null, false, Tween.TweenType.Linear));
m_AutoTweeners.Add(TweenManager.TweenVector2(vector2 => m_DropdownPanel.sizeDelta = vector2, m_DropdownPanel.sizeDelta, m_ExpandedSize, m_AnimationDuration, m_AnimationDuration / 3, null, false, Tween.TweenType.EaseInOutQuint));
m_AutoTweeners.Add(TweenManager.TweenVector3(UpdateDropdownPos, m_DropdownPanel.position, m_ExpandedPosition, m_AnimationDuration, m_AnimationDuration / 3, () =>
{
if (m_BaseSelectable != null && m_IsExapanded)
{
m_BaseSelectable.interactable = false;
}
Vector2 tempVector2 = m_PanelLayer.anchoredPosition;
tempVector2.x = Mathf.RoundToInt(tempVector2.x);
tempVector2.y = Mathf.RoundToInt(tempVector2.y);
m_PanelLayer.anchoredPosition = tempVector2;
}, false, Tween.TweenType.EaseInOutQuint));
for (int i = 0; i < m_ListItems.Count; i++)
{
int i1 = i;
CanvasGroup canvasGroup = m_ListItems[i].canvasGroup;
m_ListItemAutoTweeners.Add(TweenManager.TweenFloat(f => canvasGroup.alpha = f, canvasGroup.alpha, 1f, m_AnimationDuration * 1.66f, (i1 * (m_AnimationDuration / 6) + m_AnimationDuration) - m_ScrollPosOffset / 800, null, false, Tween.TweenType.Linear));
}
if (m_FullHeight > m_TempMaxHeight)
{
m_DropdownPanel.GetChildByName <ScrollRect>("ScrollRect").gameObject.AddComponent <RectMask2D>();
}
m_IsExapanded = true;
m_TimeShown = Time.unscaledTime;
}
/// <summary>
/// Creates a single dropdown item and adds it to the dropdown list object in the scene.
/// </summary>
/// <param name="data">The data of the item.</param>
/// <param name="index">The index of the item.</param>
/// <returns>The instantiated DropdownListItem.</returns>
private DropdownListItem CreateItem(OptionData data, int index)
{
DropdownListItem item = new DropdownListItem();
GameObject itemGameObject = Instantiate(m_ListItemTemplate.rectTransform.gameObject);
item.rectTransform = itemGameObject.GetComponent <RectTransform>();
item.rectTransform.SetParent(m_ListItemTemplate.rectTransform.parent);
item.rectTransform.localScale = Vector3.one;
item.rectTransform.localEulerAngles = Vector3.zero;
item.rectTransform.anchoredPosition3D = Vector3.zero;
item.canvasGroup = item.rectTransform.GetComponent <CanvasGroup>();
item.text = item.rectTransform.GetChildByName <Text>("Text");
if (m_OptionDataList.imageType == ImageDataType.Sprite)
{
item.image = item.rectTransform.GetChildByName <Image>("Icon");
Destroy(item.rectTransform.GetChildByName <VectorImage>("Icon").gameObject);
}
else
{
item.image = item.rectTransform.GetChildByName <VectorImage>("Icon");
Destroy(item.rectTransform.GetChildByName <Image>("Icon").gameObject);
}
DropdownTrigger trigger = itemGameObject.GetComponent <DropdownTrigger>();
trigger.index = index;
trigger.dropdown = this;
if (!string.IsNullOrEmpty(data.text))
{
item.text.text = data.text;
}
else
{
Destroy(item.text.gameObject);
}
if (data.imageData != null && data.imageData.ContainsData(true))
{
item.image.SetImage(data.imageData);
}
else
{
Destroy(item.image.gameObject);
}
itemGameObject.GetComponent <MaterialRipple>().rippleData = m_ItemRippleData.Copy();
if (m_HighlightCurrentlySelected && index == m_CurrentlySelected)
{
itemGameObject.GetComponent <Image>().color = m_ItemRippleData.Color.WithAlpha(m_ItemRippleData.EndAlpha);
}
item.text.color = m_ItemTextColor;
item.image.color = m_ItemIconColor;
item.canvasGroup.alpha = 0f;
return(item);
}