using FastReport.Design;
using FastReport.DevComponents.DotNetBar;
using FastReport.Utils;
using System.Drawing;
using System.Windows.Forms;
using System;

namespace FastReport.Controls
{
    internal class UndoButtonItem : ButtonItem
    {
        private UndoDropDown undoDropDown;

        public UndoButtonItem(Designer designer)
        {
            undoDropDown = new UndoDropDown(designer, this);
            Click += designer.cmdUndo.Invoke;
        }
    }

    internal class RedoButtonItem : ButtonItem
    {
        private RedoDropDown redoDropDown;

        public RedoButtonItem(Designer designer)
        {
            redoDropDown = new RedoDropDown(designer, this);
            Click += designer.cmdRedo.Invoke;
        }
    }

    internal class UndoRedoDropDown : ItemContainer
    {
        private bool updating;
        protected Designer designer;
        protected ListBox lbxActions;
        protected Label lblUndoRedo;
        protected ButtonItem parent;
        protected ControlContainerItem actionsHost;
        protected ControlContainerItem labelHost;

        private void SetSelected(int index)
        {
            if (updating)
                return;
            updating = true;
            int saveTop = lbxActions.TopIndex;
            lbxActions.BeginUpdate();
            lbxActions.SelectedIndices.Clear();
            if (lbxActions.Items.Count > 0)
            {
                for (int i = index; i >= 0; i--)
                    lbxActions.SelectedIndices.Add(i);
            }
            lbxActions.TopIndex = saveTop;
            lbxActions.EndUpdate();
            UpdateLabel();
            updating = false;
        }

        public override void UpdateDpiDependencies()
        {
            base.UpdateDpiDependencies();
            UpdateSizes();
        }

        private void lbxActions_MouseMove(object sender, MouseEventArgs e)
        {
            int index = lbxActions.IndexFromPoint(e.X, e.Y);
            SetSelected(index);
        }

        private void lbxActions_MouseDown(object sender, MouseEventArgs e)
        {
            int actionsCount = lbxActions.SelectedItems.Count + 1;
            parent.ClosePopup();
            DoUndoRedo(actionsCount);
        }

        private void UpdateSizes()
        {
            lbxActions.Size = designer.LogicalToDevice(new Size(150, 200));
            lblUndoRedo.Size = designer.LogicalToDevice(new Size(150, 30));
        }

        protected virtual void PopulateItems()
        {
        }

        protected virtual void UpdateLabel()
        {
        }

        protected virtual void DoUndoRedo(int actionsCount)
        {
        }

        private void parent_PopupOpen(object sender, PopupOpenEventArgs e)
        {
            PopulateItems();
            UpdateSizes();
            SetSelected(0);
        }

        public UndoRedoDropDown(Designer designer, ButtonItem parent)
        {
            this.designer = designer;
            this.parent = parent;

            LayoutOrientation = eOrientation.Vertical;
            parent.PopupType = ePopupType.ToolBar;
            parent.SubItems.Add(this);
            parent.PopupOpen += new DotNetBarManager.PopupOpenEventHandler(parent_PopupOpen);

            lbxActions = new ListBox();
            lbxActions.Size = new Size(150, 200);
            lbxActions.BorderStyle = BorderStyle.None;
            lbxActions.SelectionMode = SelectionMode.MultiSimple;
            lbxActions.MouseMove += new MouseEventHandler(lbxActions_MouseMove);
            lbxActions.MouseDown += new MouseEventHandler(lbxActions_MouseDown);

            actionsHost = new ControlContainerItem();
            actionsHost.Control = lbxActions;

            SubItems.Add(actionsHost);

            lblUndoRedo = new Label();
            lblUndoRedo.AutoSize = false;
            lblUndoRedo.Size = new Size(150, 30);
            lblUndoRedo.TextAlign = ContentAlignment.MiddleCenter;
            lblUndoRedo.BackColor = Color.Transparent;

            labelHost = new ControlContainerItem();
            labelHost.Control = lblUndoRedo;

            SubItems.Add(labelHost);
        }
    }


    internal class UndoDropDown : UndoRedoDropDown
    {
        protected override void PopulateItems()
        {
            lbxActions.Items.Clear();
            if (designer.ActiveReport != null)
            {
                string[] undoNames = designer.ActiveReportTab.UndoRedo.UndoNames;
                foreach (string s in undoNames)
                {
                    lbxActions.Items.Add(s);
                }
            }
        }

        protected override void UpdateLabel()
        {
            lblUndoRedo.Text = String.Format(Res.Get("Designer,UndoRedo,UndoN"), lbxActions.SelectedItems.Count);
        }

        protected override void DoUndoRedo(int actionsCount)
        {
            designer.cmdUndo.Undo(actionsCount);
        }

        public UndoDropDown(Designer designer, ButtonItem parent)
            : base(designer, parent)
        {
        }
    }


    internal class RedoDropDown : UndoRedoDropDown
    {
        protected override void PopulateItems()
        {
            lbxActions.Items.Clear();
            if (designer.ActiveReport != null)
            {
                string[] undoNames = designer.ActiveReportTab.UndoRedo.RedoNames;
                foreach (string s in undoNames)
                {
                    lbxActions.Items.Add(s);
                }
            }
        }

        protected override void UpdateLabel()
        {
            lblUndoRedo.Text = String.Format(Res.Get("Designer,UndoRedo,RedoN"), lbxActions.SelectedItems.Count);
        }

        protected override void DoUndoRedo(int actionsCount)
        {
            designer.cmdRedo.Redo(actionsCount);
        }

        public RedoDropDown(Designer designer, ButtonItem parent)
            : base(designer, parent)
        {
        }
    }
}