/// <summary>
/// Gets the increase cell count command.
/// </summary>
/// <param name="panel">The panel that the child panel should be inserted next to.</param>
/// <param name="insertOnLeft">True if the panel should be inserted to the left of panel, otherwise false.</param>
/// <returns>The complete relay command.</returns>
public PsiCommand CreateIncreaseCellCountCommand(VisualizationPanel panel, bool insertOnLeft)
{
int panelIndex = this.panels.IndexOf(panel);
PsiCommand command = new PsiCommand(
() => this.IncreaseCellCount(insertOnLeft ? panelIndex : panelIndex + 1),
this.Panels.Count < MaxCells);
return(command);
}
/// <summary>
/// Removes a cell specified by the panel it contains.
/// </summary>
/// <param name="panel">The panel whose cell should be removed.</param>
public void RemoveCell(VisualizationPanel panel)
{
// Get the index of the panel to remove.
int panelIndex = this.Panels.IndexOf(panel);
// Unhook and remove the child panel
panel.PropertyChanged -= this.ChildVisualizationPanel_PropertyChanged;
panel.Clear();
this.Panels.Remove(panel);
this.UpdateChildPanelMargins();
}
private void ChildVisualizationPanel_PropertyChanged(object sender, PropertyChangedEventArgs e)
{
// If the child panel has no more visualizations in it, replace it with a placeholder panel
if (e.PropertyName == nameof(VisualizationPanel.VisualizationObjects))
{
VisualizationPanel childPanel = sender as VisualizationPanel;
if (childPanel.VisualizationObjects.Count <= 0)
{
this.ReplaceChildVisualizationPanel(childPanel, new InstantVisualizationPlaceholderPanel());
}
}
}
/// <summary>
/// Replaces an instant visualization placeholder panel with an instant visualization panel.
/// </summary>
/// <param name="oldPanel">The visualization panel to replace.</param>
/// <param name="newPanel">The visualization panel to replace it with.</param>
public void ReplaceChildVisualizationPanel(VisualizationPanel oldPanel, VisualizationPanel newPanel)
{
if (oldPanel == null)
{
throw new ArgumentNullException(nameof(oldPanel));
}
if (newPanel == null)
{
throw new ArgumentNullException(nameof(newPanel));
}
// Make sure the placeholder panel being replaced is really a child of this container
int placeholderPanelIndex = this.Panels.IndexOf(oldPanel);
if (placeholderPanelIndex < 0)
{
throw new ArgumentException("placeholderPanel is not a member of the Panels collection");
}
// Disconnect the placeholder panel
oldPanel.PropertyChanged -= this.ChildVisualizationPanel_PropertyChanged;
oldPanel.SetParentContainer(null);
// Wire up the new panel
newPanel.SetParentContainer(this.Container);
newPanel.ParentPanel = this;
newPanel.Width = oldPanel.Width;
newPanel.PropertyChanged += this.ChildVisualizationPanel_PropertyChanged;
// Replace the panel
this.Panels[placeholderPanelIndex] = newPanel;
this.UpdateChildPanelMargins();
// If the current visualization panel is the one we just replaced,
// then set it instead to the new panel we replaced it with.
if (this.Container?.CurrentPanel == oldPanel)
{
this.Container.CurrentPanel = newPanel;
}
}
/// <summary> /// Gets the decrease cell count command. /// </summary> /// <param name="panel">The child panel to remove.</param> /// <returns>The complete relay command.</returns> public PsiCommand CreateRemoveCellCommand(VisualizationPanel panel) => new PsiCommand(() => this.RemoveCell(panel), true);