/// <summary>
/// 出栈 ，把页面从界面上移除
/// </summary>
public BasePanel PopPanel()
{
if (m_PanelStack == null)
{
m_PanelStack = new Stack <BasePanel>();
}
if (m_PanelStack.Count <= 0)
{
return(null);
}
BasePanel topPanel = m_PanelStack.Pop(); // 获取并移除栈顶面板
topPanel.OnClose(); // 关闭面板
return(topPanel);
}
/// <summary>
/// 根据面板类型 得到实例化的面板
/// </summary>
/// <returns></returns>
public BasePanel GetPanel(string uiname)
{
if (m_PanelDict == null)
{
m_PanelDict = new Dictionary <string, BasePanel>();
}
m_PanelDict.TryGetValue(uiname, out BasePanel panel);
if (panel == null)
{
// 根据prefab去实例化面板
m_PanelPathDict.TryGetValue(uiname, out string path);
Debug.Log(path);
GameObject instPanel = GameObject.Instantiate(Resources.Load(path)) as GameObject;
// UICore与派生类不一定在一个程序集类，所以不能直接用Type.GetType TODO : 根据不同平台规定路径
Assembly asmb = Assembly.Load("Assembly-CSharp");
Type type = asmb.GetType(uiname);
BasePanel basePanel = (BasePanel)Activator.CreateInstance(type);
basePanel.Init(instPanel, uiname);
if (basePanel == null)
{
throw new System.Exception("面板类名错误");
}
m_PanelDict.Add(uiname, basePanel);
Transform uiGroup = CanvasTransform.Find("Level" + basePanel.Level);
if (uiGroup == null)
{
RectTransform rect;
rect = (new GameObject("Level" + basePanel.Level)).AddComponent <RectTransform>();
rect.SetParent(CanvasTransform);
rect.sizeDelta = CanvasTransform.sizeDelta;
rect.position = CanvasTransform.position;
rect.localScale = Vector3.one;
uiGroup = rect;
}
instPanel.transform.SetParent(uiGroup, false);
return(basePanel);
}
else
{
return(panel);
}
}
/// <summary>
/// 把某个页面入栈， 把某个页面显示在界面上
/// </summary>
public void PushPanel(string uiname)
{
if (m_PanelStack == null)
{
m_PanelStack = new Stack <BasePanel>();
}
BasePanel nextPanel = GetPanel(uiname); // 计划打开的页面
BasePanel currentPanel = null; // 最近一次关闭的界面
// 判断一下栈里面是否有页面
if (m_PanelStack.Count > 0)
{
BasePanel topPanel = m_PanelStack.Peek(); // 获取栈顶页面
// 如果即将打开的页面是栈顶页面，即关闭栈顶页面
if (topPanel == nextPanel)
{
PopPanel();
return;
}
// 当栈内有面板时，进行判断
while (m_PanelStack.Count > 0)
{
if (topPanel.Level < nextPanel.Level)
{
break;
}
// 如果栈顶页面的层级不小于要打开的页面层级，关闭它并保存
currentPanel = PopPanel();
if (m_PanelStack.Count > 0)
{
topPanel = m_PanelStack.Peek();
}
}
}
// 如果最后关闭的界面和要打开的是同一个，就不打开了
if (currentPanel != nextPanel)
{
nextPanel.OnOpen();
m_PanelStack.Push(nextPanel); // 将打开的面板入栈
}
}
