using FastReport.Controls;
using FastReport.Forms;
using FastReport.Utils;
using System.ComponentModel;

namespace FastReport.Design.Toolbars
{
    /// <summary>
    /// Base class for all designer toolbars.
    /// </summary>
    /// <remarks>
    /// Use this class to write own designer's toolbar. To do this:
    /// <para>- in the constructor, set the <b>Name</b> property and create toolbar buttons. 
    /// The <b>Name</b> will be used to restore toolbar's state;</para>
    /// <para>- override the <b>SelectionChanged</b> method. This method is called when current selection
    /// is changed. In this method, you should update buttons state to reflect the current selection. 
    /// Selected objects can be accessed via <b>Designer.SelectedObjects</b> property;</para>
    /// <para>- override the <b>UpdateContent</b> method. This method is called when the report
    /// content was changed. Typically you need to do the same actions in <b>SelectionChanged</b> and
    /// <b>UpdateContent</b> methods;</para>
    /// <para>- to register a toolbar, add its type to the <see cref="DesignerPlugins"/> global collection:
    /// <code>
    /// DesignerPlugins.Add(typeof(MyToolbar));
    /// </code>
    /// </para>
    /// </remarks>
    [ToolboxItem(false)]
    public class DesignerToolbarBase : ToolbarBase, IDesignerPlugin
    {
        #region Properties
        /// <inheritdoc/>
        public string PluginName => Name;

        private ControlStorageService storage;
        
        /// <summary>
        /// Gets storage service.
        /// </summary>
        public ControlStorageService Storage
        {
            get
            {
                if (storage == null)
                    storage = new ControlStorageService(this, "Designer," + Name);
                return storage;
            }
        }
           
        #endregion

        #region IDesignerPlugin
        /// <inheritdoc/>
        public virtual void SaveState()
        {
            Storage.SetBool("Visible", Visible);
            Storage.SetDip("Left", Left);
            Storage.SetDip("Top", Top);
        }

        /// <inheritdoc/>
        public virtual void RestoreState()
        {
            Visible = Storage.GetBool("Visible", true);
            if (Storage.HasProperties)
            {
                Left = Storage.GetDip("Left");
                Top = Storage.GetDip("Top");
            }
        }

        /// <inheritdoc/>
        public virtual void SelectionChanged()
        {
        }

        /// <inheritdoc/>
        public virtual void UpdateContent()
        {
        }

        /// <inheritdoc/>
        public void Lock()
        {
        }

        /// <inheritdoc/>
        public void Unlock()
        {
            UpdateContent();
        }

        /// <inheritdoc/>
        public virtual void Localize()
        {
        }

        /// <inheritdoc/>
        public virtual DesignerOptionsPage GetOptionsPage()
        {
            return null;
        }

        #endregion

        /// <summary>
        /// Initializes a new instance of the <see cref="DesignerToolbarBase"/> class with default settings.
        /// </summary>
        /// <param name="designer">The report designer.</param>
        /// <remarks>
        /// You don't need to call this constructor. The designer will do this automatically.
        /// </remarks>
        public DesignerToolbarBase(Designer designer) : base(designer)
        {
        }
    }

}