WPF x FileExplorer x MVVM

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using Cinch;
using System.Windows;
using QuickZip.Translation;

namespace QuickZip.UserControls.MVVM.Command.Model
{
    /// <summary>
    /// Used to toggle View Modes
    /// </summary>
    public class ViewModeCommandModel : SliderCommandModel
    {


        #region Constructor

        public ViewModeCommandModel()
            : base((int)ViewMode.vmTile, (int)ViewMode.vmExtraLargeIcon, (int)ViewMode.vmGrid)
        {
            Header = "";
            IsRightAligned = true;
            IsExecutable = true;

        }

        public ViewModeCommandModel(int viewSize)
            : base((int)ViewMode.vmTile, (int)ViewMode.vmExtraLargeIcon, viewSize)
        {
            Header = "";
            IsRightAligned = true;
            IsExecutable = true;
        }


        #endregion

        #region Methods

        

        public override IEnumerable<CommandModel> GetSubActions()
        {
            Func<ViewMode, CommandModel> getCommandModel = (vm) =>
            {

                SelectorItemActionModel<int> actionModel = new SelectorItemActionModel<int>(this,
                new SelectorItemInfo<int>()
                {
                    Header = vm.ToString(),
                    Value = (int)vm,
                    HeaderIcon = ViewModeIconDic[vm]
                });

                switch (vm)
                {
                    case ViewMode.vmExtraLargeIcon: actionModel.Header = Texts.strExtraLargeIcon; break;
                    case ViewMode.vmLargeIcon: actionModel.Header = Texts.strLargeIcon; break;
                    case ViewMode.vmIcon: actionModel.Header = Texts.strIcon; break;
                    case ViewMode.vmSmallIcon: actionModel.Header = Texts.strSmallIcon; break;
                    case ViewMode.vmGrid: actionModel.Header = Texts.strGrid; break;
                    case ViewMode.vmList: actionModel.Header = Texts.strList; break;
                    case ViewMode.vmTile: actionModel.Header = Texts.strTile; break;
                }

                if (vm == ViewMode.vmIcon || vm == ViewMode.vmLargeIcon)
                {
                    actionModel.ExtraItemHeight = 32;
                    actionModel.IsStepStop = (vm == ViewMode.vmLargeIcon);
                }
                else
                {
                    actionModel.ExtraItemHeight = 0;
                    actionModel.IsStepStop = true;
                }

                return actionModel;
            };

            yield return getCommandModel(ViewMode.vmExtraLargeIcon);
            yield return getCommandModel(ViewMode.vmLargeIcon);
            yield return getCommandModel(ViewMode.vmIcon);
            yield return getCommandModel(ViewMode.vmSmallIcon);
            yield return new SeparatorCommandModel();
            yield return getCommandModel(ViewMode.vmList);
            yield return new SeparatorCommandModel();
            yield return getCommandModel(ViewMode.vmGrid);
            yield return new SeparatorCommandModel();
            yield return getCommandModel(ViewMode.vmTile);
        }

        protected override void OnValueChanged()
        {
            base.OnValueChanged();
            HeaderIcon = ViewModeIconDic[ViewSizeToViewMode(Value)];
        }       

        public override void Execute(object param)
        {
            base.Execute(param);
            ViewMode vmode = ViewSizeToViewMode(Value);
            switch (vmode)
            {
                case ViewMode.vmTile: Value = (int)ViewMode.vmGrid; break;
                case ViewMode.vmGrid: Value = (int)ViewMode.vmList; break;
                case ViewMode.vmList: Value = (int)ViewMode.vmSmallIcon; break;
                case ViewMode.vmSmallIcon: Value = (int)ViewMode.vmIcon; break;
                case ViewMode.vmIcon: Value = (int)ViewMode.vmLargeIcon; break;
                case ViewMode.vmLargeIcon: Value = (int)ViewMode.vmExtraLargeIcon; break;
                case ViewMode.vmExtraLargeIcon: Value = (int)ViewMode.vmTile; break;
            }
        }

        internal static Dictionary<ViewMode, Bitmap> ViewModeIconDic = constructViewModeIconDic();
        static Dictionary<ViewMode, Bitmap> constructViewModeIconDic()
        {
            Dictionary<ViewMode, Bitmap> retVal = new Dictionary<ViewMode, Bitmap>();
            foreach (ViewMode mode in Enum.GetValues(typeof(ViewMode)))
            {
                retVal.Add(mode, GetViewModeBitmap(mode));
            }
            return retVal;
        }


        internal static ViewMode ViewSizeToViewMode(int viewSize)
        {
            switch (viewSize)
            {
                case (int)ViewMode.vmTile:
                case (int)ViewMode.vmGrid:
                case (int)ViewMode.vmList:
                case (int)ViewMode.vmSmallIcon:
                    return (ViewMode)viewSize;
            }

            if (viewSize <= (int)ViewMode.vmIcon)
                return ViewMode.vmIcon;
            else if (viewSize <= (int)ViewMode.vmLargeIcon)
                return ViewMode.vmLargeIcon;
            else if (viewSize <= (int)ViewMode.vmExtraLargeIcon)
                return ViewMode.vmExtraLargeIcon;
            else return ViewMode.vmViewer;
        }

        internal static string GetUriPath(ViewMode viewMode)
        {
            string uriPath = null;
            string uriRoot = "pack://application:,,,/QuickZip.UserControls.Explorer;component/Themes/Resources/ViewMode/";
            switch (viewMode)
            {
                case ViewMode.vmExtraLargeIcon: uriPath = uriRoot + "extralarge_16.png"; break;
                case ViewMode.vmLargeIcon: uriPath = uriRoot + "large_16.png"; break;
                case ViewMode.vmIcon: uriPath = uriRoot + "icon_16.png"; break;
                case ViewMode.vmSmallIcon: uriPath = uriRoot + "smallicon_16.png"; break;
                case ViewMode.vmList: uriPath = uriRoot + "list_16.png"; break;
                case ViewMode.vmGrid: uriPath = uriRoot + "details_16.png"; break;
                case ViewMode.vmTile: uriPath = uriRoot + "tile_16.png"; break;
                default: uriPath = uriRoot + "details_16.png"; break;
            };

            return uriPath;
        }

        internal static Bitmap GetViewModeBitmap(ViewMode viewMode)
        {            
            string uri = GetUriPath(viewMode);
            return new Bitmap(Application.GetResourceStream(new Uri(uri)).Stream);
        }



        #endregion

        #region Data


        #endregion

        #region Public Properties


        #endregion
    }


}