using FastReport.Design;
using FastReport.Utils;
using System;
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;

namespace FastReport.Controls
{
    internal class ToolStripUndoButton : ToolStripSplitButton
    {
        public ToolStripUndoButton(Designer designer)
        {
            DisplayStyle = ToolStripItemDisplayStyle.Image;
            DropDown = new UndoDropDown(designer);
            ButtonClick += designer.cmdUndo.Invoke;
        }
    }

    internal class ToolStripRedoButton : ToolStripSplitButton
    {
        public ToolStripRedoButton(Designer designer)
        {
            DisplayStyle = ToolStripItemDisplayStyle.Image;
            DropDown = new RedoDropDown(designer);
            ButtonClick += designer.cmdRedo.Invoke;
        }
    }

    internal class UndoRedoDropDown : ToolStripDropDown
    {
        private bool updating;
        private int actionsCount;
        protected Designer designer;
        protected ListBox lbxActions;
        protected Label lblUndoRedo;
        protected ToolStripControlHost actionsHost;
        protected ToolStripControlHost 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;
        }

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

        private void lbxActions_MouseDown(object sender, MouseEventArgs e)
        {
            Close(ToolStripDropDownCloseReason.ItemClicked);
            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)
        {
        }

        protected override void OnOpening(CancelEventArgs e)
        {
            base.OnOpening(e);
            PopulateItems();
            UpdateSizes();
            SetSelected(0);
        }

        public UndoRedoDropDown(Designer designer)
            : base()
        {
            this.designer = designer;
            Padding = new Padding(1);
            lbxActions = new ListBox();
            lbxActions.Dock = DockStyle.Fill;
            lbxActions.BorderStyle = BorderStyle.None;
            lbxActions.SelectionMode = SelectionMode.MultiSimple;
            lbxActions.MouseMove += new MouseEventHandler(lbxActions_MouseMove);
            lbxActions.MouseDown += new MouseEventHandler(lbxActions_MouseDown);
            actionsHost = new ToolStripControlHost(lbxActions);
            actionsHost.AutoSize = false;
            actionsHost.Size = new Size(150, 250);
            Items.Add(actionsHost);
            lblUndoRedo = new Label();
            lblUndoRedo.Dock = DockStyle.Fill;
            lblUndoRedo.AutoSize = false;
            lblUndoRedo.TextAlign = ContentAlignment.MiddleCenter;
            lblUndoRedo.Text = "test";
            lblUndoRedo.BackColor = Color.Transparent;
            labelHost = new ToolStripControlHost(lblUndoRedo);
            labelHost.AutoSize = false;
            labelHost.Size = new Size(100, 30);
            Items.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)
            : base(designer)
        {
        }
    }


    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)
            : base(designer)
        {
        }
    }
}