using System.Linq;
using System.Windows.Forms;
using FastReport.Utils;

namespace FastReport.Forms
{
    public partial class ShortcutEditorForm : BaseDialogForm
    {
        private Keys keys;

        public Keys Keys
        {
            get { return keys; }
            set { keys = value; lblKeybinding.Text = Converter.ShortcutKeysToStr(Keys); }
        }

        /// <inheritdoc/>
        protected override bool ProcessDialogKey(Keys keyData)
        {
            if (IsValidKeys(keyData))
            {
                lblKeybinding.Text = Converter.ShortcutKeysToStr(keyData);
                Keys = keyData;
            }
            else
            {
                lblKeybinding.Text = Res.Get("Forms,ShortcutEditor,UnsupportedShortcut");
                keys = Keys.None;
            }
            if (keyData == Keys.Enter || keyData == Keys.Escape)
                return base.ProcessDialogKey(keyData);
            return true;
        }

        private bool IsValidKeys(Keys keyData)
        {
            var keys = Converter.ValidShortcutKeys.Keys.ToList();
            keys.Sort();
            keys.Reverse();

            foreach (var k in keys)
            {
                if (keyData.HasFlag(k))
                    keyData &= ~k;
            }
            return keyData == Keys.None;
        }

        public ShortcutEditorForm()
        {
            InitializeComponent();
            Localize();
        }

        /// <inheritdoc/>
        public override void Localize()
        {
            base.Localize();
            MyRes res = new MyRes("Forms,ShortcutEditor");
            Text = res.Get("");
            lblNeedInput.Text = res.Get("NeedInputShortcut");
        }
    }
}