/// <summary>
/// get panel below splitter
/// </summary>
/// <param name="splitter"></param>
/// <returns></returns>
public Panel GetPanelBySplitter(SplitterWithExpander splitter)
{
int index = this.Controls.GetChildIndex(splitter);
Panel panel = this.Controls[index - 1] as Panel; // get the panel below splitter
return(panel);
}
/// <summary>
/// create splitter with expander
/// </summary>
/// <returns></returns>
protected override Splitter CreateDefaultSplitterControl(string name)
{
IDesignerHost host = this.GetService(typeof(IDesignerHost)) as IDesignerHost;
SplitterWithExpander splitter = host.CreateComponent(typeof(SplitterWithExpander)) as SplitterWithExpander;
splitter.Initialize(SplitterThinkness, name);
splitter.PropertyChanged += Splitter_PropertyChanged;
return(splitter);
}
/// <summary>
/// set the visibility of panel when expander is expanded/ collapsed
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Splitter_PropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (e.PropertyName == "IsExpanded")
{
SplitterWithExpander splitterWithExpander = ((SplitterWithExpander)(sender));
Panel panel = GetPanelBySplitter(splitterWithExpander);
panel.Visible = splitterWithExpander.IsExpanded; // set the visibility of panel
OnIsExpandedChangedChanged(panel); // raise isexpanded changed event
}
}
/// <summary>
/// Show the panel if it is not visible
/// </summary>
/// <param name="panel"></param>
public void EnsureExpanded(Panel panel)
{
if (!panel.Visible)
{
int index = Controls.GetChildIndex(panel);
SplitterWithExpander splitterWithExpander = Controls[index + 1] as SplitterWithExpander;
splitterWithExpander.IsExpanded = true;
}
}
protected override bool GetHitTest(Point point)
{
SplitterWithExpander splitter = this.Component as SplitterWithExpander;
bool result = base.GetHitTest(point);
point = splitter.PointToClient(point);
SplitterHitTestArea hitTestResult = splitter.HitTest(point);
if (hitTestResult == SplitterHitTestArea.Expander)
{
return(true);
}
return(false);
}
/// <summary>
/// update the text of splitter
/// </summary>
/// <param name="index"></param>
/// <param name="text"></param>
public void UpdateSplitterText(int index, string text)
{
SplitterWithExpander splitter = Splitters[index] as SplitterWithExpander;
splitter.UpdateText(text);
}
