private object GetMemberValue(string member)
{
if (String.IsNullOrEmpty(member) || _dataBoundItem == null)
{
return(null);
}
object result = ReflectionPool.GetPropertyValue(_dataBoundItem, member);
return(result);
}
internal object GetItemPropertyValue(object itemValue, string propertyName)
{
if (itemValue == null || String.IsNullOrEmpty(propertyName))
{
Debug.Assert(false, "itemValue 或 propertyName 为空");
throw new ArgumentNullException();
}
return(ReflectionPool.GetPropertyValue(itemValue, propertyName));
}
public void Update(object obj)
{
if (_dataBoundItem == null || obj == null)
{
Debug.Assert(false, "_dataBoundItem 或 obj 为 null");
return;
}
ReflectionPool.SetPropertyValue(_dataBoundItem, TextMember,
ReflectionPool.GetPropertyValue(obj, TextMember));
SetText();
}
public T obtain <T> (Type type)
{
ReflectionPool <Component> pool = pools.ContainsKey(type) ? pools[type] : null;
if (pool == null)
{
pool = new ReflectionPool <Component> (type, initialSize, maxSize);
pools.Add(typeof(T), pool);
}
return((T)pool.obtain());
}
public void free(Component obj)
{
if (obj == null)
{
throw new ArgumentException("object cannot be null.");
}
ReflectionPool <Component> pool = pools[obj.GetType()];
if (pool == null)
{
return; // Ignore freeing an object that was never retained.
}
pool.free(obj);
}
private void SetText()
{
if (String.IsNullOrEmpty(TextMember) || _dataBoundItem == null)
{
return;
}
object textObject = ReflectionPool.GetPropertyValue(_dataBoundItem, TextMember);
if (textObject == null)
{
return;
}
this.Text = textObject.ToString();
}
/// <summary>
/// 获取当前选定对象的下钻对象集合
/// </summary>
/// <returns></returns>
private IList GetGoingDownItems()
{
if (_currentCodon == null || SelectedItemsCount != 1)
{
return(null);
}
object selectedObject = GetSelectedItem();
if (String.IsNullOrEmpty(_currentCodon.ItemsMember) || selectedObject == null)
{
return(null);
}
object listObject = ReflectionPool.GetPropertyValue(selectedObject, _currentCodon.ItemsMember);
if (listObject == null)
{
return(null);
}
return(listObject as IList);
}
/// <summary>
/// 绘制文本
/// </summary>
/// <param name="g"></param>
private void DrawText(Graphics g)
{
object selectedValue = GetSelectedValue();
if (selectedValue == null)
{
return;
}
#region 绘制标题文本
object textObj = ReflectionPool.GetPropertyValue(selectedValue, DisplayMember);
if (textObj != null)
{
string text = textObj.ToString();
if (text != String.Empty)
{
Color textColor;
if (this.Selected)
{
textColor = _theme.SelectedTextColor;
}
else if (this.Hovered)
{
textColor = _theme.HoveredTextColor;
}
else
{
textColor = _theme.TextColor;
}
Font textFont = new System.Drawing.Font(this.Font, FontStyle.Bold);
Rectangle textRectangle = GetTextRectangle();
// g.FillRectangle(Brushes.Red, textRectangle);
TextRenderer.DrawText(g, text, textFont, textRectangle, textColor, _textFlags);
}
}
#endregion
if (this.ShowDescription)
{
#region 绘制Description
object descriptionObj = ReflectionPool.GetPropertyValue(selectedValue, DescriptionMember);
if (descriptionObj != null)
{
string description = descriptionObj.ToString();
if (description != String.Empty)
{
Color textColor;
if (this.Selected)
{
textColor = _theme.SelectedDescriptionTextColor;
}
else if (this.Hovered)
{
textColor = _theme.HoveredDescriptionColor;
}
else
{
textColor = _theme.DescriptionTextColor;
}
Rectangle descriptionRectangle = GetDescriptionRectangle();
// g.FillRectangle(Brushes.Red, descriptionRectangle);
TextRenderer.DrawText(g, description, this.Font, descriptionRectangle, textColor, _textFlags);
}
}
#endregion
}
}