DotNet 4.8.1 build of DotNetBar
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@@ -0,0 +1,429 @@
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using System;
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using System.ComponentModel;
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namespace DevComponents.DotNetBar.Charts.Style
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{
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///<summary>
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/// VisualStyles
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///</summary>
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[TypeConverter(typeof(VisualStylesConverter))]
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public class VisualStyles<T> : IDisposable, INotifyPropertyChanged, IProcessSerialElement
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where T : BaseVisualStyle, new()
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{
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#region Private variables
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private T[] _Styles;
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#endregion
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///<summary>
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/// Constructor
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///</summary>
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public VisualStyles()
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{
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_Styles = new T[Enum.GetValues(typeof(StyleType)).Length - 1];
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}
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#region Public properties
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#region Indexer
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/// <summary>
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/// Gets or sets the visual style
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/// assigned to the element. Default value is null.
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/// </summary>
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[DefaultValue(null), Category("Style")]
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[Description("Indicates visual style assigned to the element")]
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public T this[StyleType e]
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{
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get
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{
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int n = StyleIndex(e);
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return (GetStyle(n));
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}
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set
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{
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int n = StyleIndex(e);
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SetStyle(n, value);
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}
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}
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#endregion
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#region Default
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///<summary>
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/// The normal, default style
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///</summary>
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[Description("Style to use for normal, default items")]
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[TypeConverter(typeof(VisualStylesConverter))]
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[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
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public T Default
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{
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get { return (GetStyle((int) StyleType.Default)); }
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set { SetStyle((int) StyleType.Default, value); }
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}
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#endregion
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#region MouseOver
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///<summary>
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/// MouseOver
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///</summary>
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[Description("Style to use when the Mouse is over an item")]
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[TypeConverter(typeof(VisualStylesConverter))]
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[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
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public T MouseOver
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{
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get { return (GetStyle((int)StyleType.MouseOver)); }
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set { SetStyle((int)StyleType.MouseOver, value); }
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}
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#endregion
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#region Selected
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///<summary>
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/// Selected
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///</summary>
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[Description("Style to use when the item is selected")]
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[TypeConverter(typeof(VisualStylesConverter))]
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[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
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public T Selected
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{
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get { return (GetStyle((int)StyleType.Selected)); }
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set { SetStyle((int)StyleType.Selected, value); }
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}
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#endregion
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#region SelectedMouseOver
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///<summary>
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/// MouseOver
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///</summary>
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[Description("Style to use when the item is selected and the Mouse is over it")]
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[TypeConverter(typeof(VisualStylesConverter))]
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[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
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public T SelectedMouseOver
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{
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get { return (GetStyle((int)StyleType.SelectedMouseOver)); }
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set { SetStyle((int)StyleType.SelectedMouseOver, value); }
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}
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#endregion
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#region Styles
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///<summary>
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/// Styles array
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///</summary>
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[Browsable(false)]
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[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
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public T[] Styles
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{
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get { return (_Styles); }
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}
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#endregion
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#region IsEmpty
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/// <summary>
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/// Gets whether the style collection is logically Empty.
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/// </summary>
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[Browsable(false)]
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[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
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[Description("Gets whether the style collection is logically Empty.")]
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public bool IsEmpty
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{
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get
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{
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for (int i = 0; i < Styles.Length; i++)
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{
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T vstyle = Styles[i];
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if (vstyle != null && vstyle.IsEmpty == false)
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return (false);
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}
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return (true);
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}
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}
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#endregion
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#endregion
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#region Count
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internal int Count
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{
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get { return (_Styles.Length); }
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}
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#endregion
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#region GetStyle
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internal T GetStyle(int n)
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{
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if (_Styles[n] == null)
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{
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_Styles[n] = new T();
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OnStyleChangeHandler(null, _Styles[n]);
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}
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return (_Styles[n]);
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}
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#endregion
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#region SetStyle
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internal void SetStyle(int n, T value)
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{
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if (_Styles[n] != value)
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{
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T oldValue = _Styles[n];
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_Styles[n] = value;
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OnStyleChanged(Enum.GetName(typeof(StyleType), n), oldValue, value);
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}
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}
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#endregion
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#region GetSerialData
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internal SerialElementCollection GetSerialData(string serialName)
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{
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if (IsEmpty == false)
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{
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SerialElementCollection sec = new SerialElementCollection();
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if (serialName != null)
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{
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if (serialName.Equals("") == true)
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{
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serialName = this.ToString();
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serialName = serialName.Substring(serialName.LastIndexOf('.') + 1);
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}
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sec.AddStartElement(serialName);
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}
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string[] enums = Enum.GetNames(typeof(StyleType));
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for (int i = 0; i < Styles.Length; i++)
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{
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T vstyle = Styles[i];
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if (vstyle != null && vstyle.IsEmpty == false)
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{
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sec.AddStartElement(enums[i]);
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sec.AddElement(vstyle.GetSerialData(null));
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sec.AddEndElement(enums[i]);
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}
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}
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if (serialName != null)
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sec.AddEndElement(serialName);
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return (sec);
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}
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return (null);
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}
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#endregion
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#region PutSerialData
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#region ProcessValue
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void IProcessSerialElement.ProcessValue(SerialElement se)
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{
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throw new Exception("Unknown Serial Value (" + se.Name + ")");
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}
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#endregion
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#region ProcessCollection
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void IProcessSerialElement.ProcessCollection(SerialElement se)
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{
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switch (se.Name)
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{
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case "Default":
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se.Sec.PutSerialData(Default);
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break;
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case "MouseOver":
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se.Sec.PutSerialData(MouseOver);
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break;
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case "Selected":
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se.Sec.PutSerialData(Selected);
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break;
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case "SelectedMouseOver":
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se.Sec.PutSerialData(SelectedMouseOver);
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break;
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default:
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throw new Exception("Unknown Serial Collection (" + se.Name + ")");
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}
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}
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#endregion
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#endregion
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#region OnStyleChanged
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private void OnStyleChanged(
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string property, T oldValue, T newValue)
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{
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OnStyleChangeHandler(oldValue, newValue);
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OnPropertyChanged(new VisualPropertyChangedEventArgs(property));
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}
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#endregion
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#region StyleIndex
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internal int StyleIndex(Enum e)
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{
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int n = ((IConvertible)e).ToInt32(null);
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if (n < 0 || n > _Styles.Length)
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throw new Exception("Invalid Style indexer");
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return (n);
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}
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#endregion
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#region IsValid
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internal T Style(Enum e)
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{
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int n = ((IConvertible) e).ToInt32(null);
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if (n < 0 || n > _Styles.Length)
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throw new Exception("Invalid Style indexer");
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return (_Styles[n]);
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}
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#endregion
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#region GetStyleType
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internal StyleType GetStyleType(StyleState state)
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{
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switch (state)
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{
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case StyleState.MouseOver:
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return (StyleType.MouseOver);
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case StyleState.Selected:
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return (StyleType.Selected);
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case StyleState.Selected | StyleState.MouseOver:
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return (StyleType.SelectedMouseOver);
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default:
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return (StyleType.Default);
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}
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}
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#endregion
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#region Style support routines
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#region StyleVisualChangeHandler
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private void OnStyleChangeHandler(T oldValue, T newValue)
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{
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if (oldValue != null)
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oldValue.PropertyChanged -= StyleChanged;
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if (newValue != null)
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newValue.PropertyChanged += StyleChanged;
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}
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#endregion
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#region StyleChanged
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/// <summary>
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/// Occurs when one of element visual styles has property changes.
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/// Default implementation invalidates visual appearance of element.
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/// </summary>
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/// <param name="sender">VisualStyle that changed.</param>
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/// <param name="e">Event arguments.</param>
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protected virtual void StyleChanged(object sender, PropertyChangedEventArgs e)
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{
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OnPropertyChanged(e);
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}
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#endregion
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#endregion
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#region INotifyPropertyChanged Members
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/// <summary>
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/// Occurs when property value has changed.
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/// </summary>
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public event PropertyChangedEventHandler PropertyChanged;
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/// <summary>
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/// Raises the PropertyChanged event.
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/// </summary>
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/// <param name="e">Event arguments</param>
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protected virtual void OnPropertyChanged(PropertyChangedEventArgs e)
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{
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PropertyChangedEventHandler eh = PropertyChanged;
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if (eh != null)
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eh(this, e);
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}
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#endregion
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#region IDisposable
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/// <summary>
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/// Dispose
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/// </summary>
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public void Dispose()
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{
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for (int i = 0; i < _Styles.Length; i++)
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{
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T style = _Styles[i];
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if (style != null)
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{
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SetStyle(i, null);
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style.Dispose();
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}
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}
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_Styles = null;
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}
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#endregion
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}
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}
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