Source/PopupItem.cs

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namespace DevComponents.DotNetBar
{
	using System;
	using System.Drawing;
    using System.ComponentModel;
    using DevComponents.DotNetBar.Rendering;

	/// <summary>
	///		PopupItem Class can pop-up it's subitems on either the popup Bar
	///		or menu.
	/// </summary>
	[System.ComponentModel.ToolboxItem(false),System.ComponentModel.DesignTimeVisible(false)]
	public abstract class PopupItem:ImageItem,IDesignTimeProvider
	{
		#region Events
		/// <summary>
		/// Occurs when popup container is loading. Use this event to assign control to the popup container. If you want to use same control
        /// that you added to the popup container after popup is closed you must handle the PopupContainerUnload event and remove the control
        /// from the popup container so it is not disposed with the container.
		/// </summary>
		public event EventHandler PopupContainerLoad;
		/// <summary>
		/// Occurs when popup container is unloading. Use this event to save any state associated with the control that was contained by the container or
        /// to remove the control from the container so it is not disposed with container.
		/// </summary>
		public event EventHandler PopupContainerUnload;
		/// <summary>
		/// Occurs when popup item is about to open.
		/// </summary>
		[System.ComponentModel.Description("Occurs when popup item is about to open.")]
		public event DotNetBarManager.PopupOpenEventHandler PopupOpen;

		/// <summary>
		/// Occurs while popup item is closing.
		/// </summary>
		[System.ComponentModel.Description("Occurs when popup item is closing.")]
		public event EventHandler PopupClose;

		/// <summary>
		/// Occurs after popup item has been closed.
		/// </summary>
		[System.ComponentModel.Description("Occurs after popup item has been closed.")]
		public event EventHandler PopupFinalized;

		/// <summary>
		/// Occurs just before popup window is shown.
		/// </summary>
		[System.ComponentModel.Description("Occurs just before popup window is shown.")]
		public event EventHandler PopupShowing;
		#endregion

		private MenuPanel m_PopupMenu;
		private Bar m_PopupBar;
		private PopupContainerControl m_PopupContainer=null;
		private bool m_FilterInstalled;
		protected SideBarImage m_SideBar;
		private ePopupType m_PopupType;
		private bool m_WasParentFocused;
		private Size m_OldSubItemsImageSize;  // For menus we need minimum sub items image size of 16x16 default is 12x12
		private int m_PopupWidth=200;