//  This file (FrmAddEquipment.cs) is a part of the IBBoard.WarFoundry.GUI.GTK project and is copyright 2010 IBBoard
// 
//  The file and the library/program it is in are licensed and distributed, without warranty, under the GNU Affero GPL license, either version 3 of the License or (at your option) any later version. Please see COPYING for more information and the full license.

using System;
using Gtk;
using IBBoard.GtkSharp;
using IBBoard.GtkSharp.Translatable;
using IBBoard.Lang;
using IBBoard.WarFoundry.API.Objects;
using IBBoard.WarFoundry.GUI.GTK.UIControl.Interfaces;
using IBBoard.WarFoundry.GUI.GTK.Util;
using log4net;

namespace IBBoard.WarFoundry.GUI.GTK
{
	public partial class FrmReplaceEquipment : TranslatableDialog, IReplaceEquipmentUI
	{
		private static ILog log = LogManager.GetLogger(typeof(FrmReplaceEquipment));

		public event SingleArgMethodInvoker<UnitEquipmentItem> UnitEquipmentItemChoiceChanged;
		public event MethodInvoker UnitEquipmentAmountTypeChanged;
		public event MethodInvoker UnitEquipmentAmountChanged;

		private bool isRatioLimited;

		public FrmReplaceEquipment()
		{
			this.Build();
			lstEquipment.Selection.Changed += OnSelectionChanged;
			TreeViewColumn equipColumn = new TreeViewColumn();
			equipColumn.Title = "Equipment";
			CellRendererText equipCell = new CellRendererText();
			equipColumn.PackStart(equipCell, true);
			equipColumn.SetCellDataFunc(equipCell, GtkWarFoundryUtil.RenderWarFoundryObjectName);
			lstEquipment.AppendColumn(equipColumn);			

			Translation.TranslationChanged += Retranslate;
			Translate();
		}

		private void Retranslate()
		{
			Translate();
		}

		public override void Dispose()
		{
			Translation.TranslationChanged -= Retranslate;
			base.Dispose();
		}

		public void ListenToWidgets()
		{
			rbEquipAll.Clicked += RadioButtonClicked;
			rbEquipNumeric.Clicked += RadioButtonClicked;
			rbEquipPercent.Clicked += RadioButtonClicked;
			numericAmount.ValueChanged += SpinButtonValueChanged;
			percentageAmount.ValueChanged += SpinButtonValueChanged;
			lstEquipment.Selection.Changed += OnSelectionChanged;
		}

		public void IgnoreWidgets()
		{
			rbEquipAll.Clicked -= RadioButtonClicked;
			rbEquipNumeric.Clicked -= RadioButtonClicked;
			rbEquipPercent.Clicked -= RadioButtonClicked;
			numericAmount.ValueChanged -= SpinButtonValueChanged;
			percentageAmount.ValueChanged -= SpinButtonValueChanged;
			lstEquipment.Selection.Changed -= OnSelectionChanged;
		}

		private void OnUnitEquipmentAmountChanged()
		{
			if (UnitEquipmentAmountChanged != null)
			{
				UnitEquipmentAmountChanged();
			}
		}

		private void OnUnitEquipmentAmountTypeChanged()
		{
			if (UnitEquipmentAmountChanged != null)
			{
				UnitEquipmentAmountTypeChanged();
			}
		}

		protected void OnSelectionChanged(object o, EventArgs e)
		{
			if (UnitEquipmentItemChoiceChanged != null)
			{
				UnitEquipmentItemChoiceChanged(SelectedUnitEquipmentItem);
			}
		}

		public void SetUnitEquipmentItems(UnitEquipmentItem[] items)
		{
			ListStore store = new ListStore(typeof(UnitEquipmentItem));
			
			foreach (UnitEquipmentItem equipItem in items)
			{
				store.AppendValues(equipItem);
			}
			
			lstEquipment.Model = store;
		}

		public void SetUnitEquipmentLimits(bool isRatioLimit, double minPercent, double maxPercent, int minNumber, int maxNumber)
		{
			log.DebugFormat("IsRatio? {0}. Limits: {1}->{2}, {3}%->{4}%", isRatioLimit, minNumber, maxNumber, minPercent, maxPercent);
			numericAmount.SetRange(minNumber, maxNumber);
			percentageAmount.SetRange(minPercent, maxPercent);
			isRatioLimited = isRatioLimit;
			
			if (isRatioLimit)
			{
				if (minPercent == 100)
				{
					rbEquipAll.Active = true;
				}
				else
				{
					rbEquipPercent.Active = true;
				}
			}
			else
			{
				rbEquipNumeric.Active = true;
			}
		}

		public void SetUnitEquipmentLimitsEnabled(bool isEnabled)
		{
			SetNumericAmountEnabledState(isEnabled);
			SetPercentageAmountEnabledState(isEnabled);
		}

		public bool ShowControl()
		{
			int result = Run();
			bool okayClicked = (result == (int)ResponseType.Ok);
			this.Hide();
			return okayClicked;
		}

		protected virtual void CancelButtonClicked(object sender, System.EventArgs e)
		{
			log.Debug("Cancel clicked");
			Respond(ResponseType.Cancel);
		}	

		protected virtual void OkayButtonClicked(object sender, System.EventArgs e)
		{
			log.Debug("Okay clicked");
			Respond(ResponseType.Ok);
		}		

		public void SetOkayEnabledState(bool enabled)
		{
			bttnOkay.Sensitive = enabled;
		}

		protected virtual void SpinButtonValueChanged(object sender, System.EventArgs e)
		{
			OnUnitEquipmentAmountChanged();
		}		

		protected virtual void RadioButtonClicked(object sender, System.EventArgs e)
		{
			OnUnitEquipmentAmountTypeChanged();
		}

		public void SetNumericAmountEnabledState(bool enabled)
		{
			double minPercent = GetMinPercentage();
			rbEquipNumeric.Sensitive = enabled && !(isRatioLimited && minPercent == 100);
			numericAmount.Sensitive = rbEquipNumeric.Sensitive;
		}		

		public void SetPercentageAmountEnabledState(bool enabled)
		{
			if (enabled)
			{
				double minPercentage = GetMinPercentage();
				rbEquipPercent.Sensitive = isRatioLimited && minPercentage != 100;
				percentageAmount.Sensitive = rbEquipPercent.Sensitive;
				double maxPercentage = GetMaxPercentage();				
				rbEquipAll.Sensitive = isRatioLimited && maxPercentage == 100;
				lblEquipAll.Sensitive = rbEquipAll.Sensitive;
			}
			else
			{
				rbEquipPercent.Sensitive = false;
				percentageAmount.Sensitive = false;
				rbEquipAll.Sensitive = false;
				lblEquipAll.Sensitive = false;
			}
		}

		private double GetMaxPercentage()
		{
			double min, max;
			percentageAmount.GetRange(out min, out max);
			return max;
		}

		private double GetMinPercentage()
		{
			double min, max;
			percentageAmount.GetRange(out min, out max);
			return min;
		}

		public UnitEquipmentItem SelectedUnitEquipmentItem
		{
			get
			{
				return (UnitEquipmentItem)TreeUtils.GetSelectedItem(lstEquipment);
			}
		}

		public bool IsRatioEquipmentAmount
		{
			get
			{
				return !rbEquipNumeric.Active;
			}
		}

		public int EquipmentNumericAmount
		{
			get
			{
				return (int)numericAmount.Value;
			}
			
			set
			{
				numericAmount.Value = value;
			}
		}

		public double EquipmentPercentageAmount
		{
			get
			{
				double percent;
				
				if (rbEquipAll.Active)
				{
					percent = 100;
				}
				else
				{
					percent = percentageAmount.Value;
				}
				
				return percent;
			}
			
			set
			{
				percentageAmount.Value = value;
			}
		}
	}
}