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using System.Diagnostics;
using System.Drawing;
using System.Windows.Forms;
using XenAdmin.Actions;
using XenAdmin.Core;
using XenAdmin.Properties;
using XenAPI;

namespace XenAdmin.SettingsPanels
{
    public partial class VMEnlightenmentEditPage : UserControl, IEditPage
    {
        public VM vm;
        private bool currentValue;

        public VMEnlightenmentEditPage()
        {
            InitializeComponent();
        }

        #region Implementation of VerticalTab

        public override string Text
        {
            get { return Messages.VM_ENLIGHTENMENT; }
        }

        public string SubText
        {
            get { return enlightenCheckBox.Checked ? Messages.ENABLED : Messages.DISABLED; }
        }

        public Image Image
        {
            get { return Resources.DC_16; }
        }

        #endregion

        #region Implementation of IEditPage

        public AsyncAction SaveSettings()
        {
            return enlightenCheckBox.Checked
                       ? (AsyncAction) new EnableVMEnlightenmentAction(vm, true)
                       : new DisableVMEnlightenmentAction(vm, true);
        }

        public void SetXenObjects(IXenObject orig, IXenObject clone)
        {
            Trace.Assert(clone is VM);  // only VMs should show this page
            Trace.Assert(Helpers.CreamOrGreater(clone.Connection));  // If not Cream or greater, we shouldn't see this page

            vm = (VM)clone;

            Trace.Assert(vm.CanBeEnlightened);  // If the VM cannot be enlightened, we shouldn't see this page

            PopulatePage();
        }

        public bool ValidToSave
        {
            get { return true; }
        }

        public void ShowLocalValidationMessages()
        { }

        public void Cleanup()
        { }

        public bool HasChanged
        {
            get { return enlightenCheckBox.Checked != currentValue; }
        }

        #endregion

        private void PopulatePage()
        {
            currentValue = vm.IsEnlightened;
            enlightenCheckBox.Checked = currentValue;
        }
    }
}