/// <summary>
/// Handles the property changed call back of the number of levels.
/// </summary>
/// <param name="d">Dependency object whose property got changed.</param>
/// <param name="e">EventArgs containing instance data.</param>
private static void NumberOfLevels_Callback(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
LevelOfDetail lodControl = d as LevelOfDetail;
if (lodControl != null && e.OldValue != e.NewValue && lodControl.tickContainer != null)
{
lodControl.OnNumberOfLevelsChange();
}
}
/// <summary>
/// Validates the data.
/// </summary>
private void Validate()
{
if (this.CurrentLevel > this.NumberOfLevels)
{
LevelOfDetail.RaiseArgumentException("CurrentLevel", "CurrentLevel is more than NumberOfLevels.");
}
if (this.CurrentLevel < 0)
{
LevelOfDetail.RaiseArgumentException("CurrentLevel", "Invalid CurrentLevel.");
}
if (this.NumberOfLevels < 0)
{
LevelOfDetail.RaiseArgumentException("NumberOfLevels", "Invalid NumberOfLevels.");
}
}
/// <summary>
/// Handles the property changed call back of the current level.
/// </summary>
/// <param name="d">Dependency object whose property got changed.</param>
/// <param name="e">EventArgs containing instance data.</param>
private static void CurrentLevelChanged_Callback(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
LevelOfDetail lodControl = d as LevelOfDetail;
if (lodControl != null && lodControl.tickContainer != null && !lodControl.coercing)
{
if (lodControl.CurrentLevel < 1 || lodControl.CurrentLevel > lodControl.NumberOfLevels)
{
lodControl.coercing = true;
lodControl.CurrentLevel = (int)e.OldValue;
lodControl.coercing = false;
}
else
{
lodControl.OnCurrentLevelChange((int)e.OldValue, (int)e.NewValue);
}
}
}
/// <summary>
/// Overridden. Applies the specified template.
/// </summary>
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
this.Validate();
this.incrementButton = this.GetTemplateChild(IncrementButtonElementName) as Button;
this.decrementButton = this.GetTemplateChild(DecrementButtonElementName) as Button;
this.tickContainer = this.GetTemplateChild(TickContainerElementName) as Panel;
LevelOfDetail.AssertTemplatePart(this.incrementButton, IncrementButtonElementName);
LevelOfDetail.AssertTemplatePart(this.decrementButton, DecrementButtonElementName);
LevelOfDetail.AssertTemplatePart(this.tickContainer, TickContainerElementName);
this.incrementButton.Click += new RoutedEventHandler(this.IncrementButton_Click);
this.decrementButton.Click += new RoutedEventHandler(this.DecrementButton_Click);
#if !SILVERLIGHT
this.UpdateContentMargins();
#endif
this.OnNumberOfLevelsChange();
}
