using System;
using System.Collections.Generic;
using CPF.Drawing;
using CPF.Input;
using CPF.ReoGrid.Interaction;
using CPF.ReoGrid.Rendering;

namespace CPF.ReoGrid.Views
{
	internal class ViewportController : IViewportController, IUserVisual, IVisualController
	{
		public Worksheet Worksheet
		{
			get
			{
				return this.worksheet;
			}
		}

		public ViewportController(Worksheet sheet)
		{
			this.worksheet = sheet;
			this.view = new View(this);
			this.view.Children = new List<IView>();
		}

		public virtual Rect Bounds
		{
			get
			{
				return this.view.Bounds;
			}
			set
			{
				this.view.Bounds = value;
			}
		}

		public virtual float ScaleFactor
		{
			get
			{
				return (this.View == null) ? 1f : this.View.ScaleFactor;
			}
			set
			{
				bool flag = this.View != null;
				if (flag)
				{
					this.View.ScaleFactor = value;
				}
			}
		}

		public virtual IView View
		{
			get
			{
				return this.view;
			}
			set
			{
				this.view = value;
			}
		}

		internal virtual void AddView(IView view)
		{
			this.view.Children.Add(view);
			view.ViewportController = this;
		}

		internal virtual void InsertView(IView before, IView viewport)
		{
			IList<IView> children = this.view.Children;
			int num = children.IndexOf(before);
			bool flag = num > 0 && num < children.Count;
			if (flag)
			{
				children.Insert(num, viewport);
			}
			else
			{
				children.Add(viewport);
			}
		}

		internal virtual void InsertView(int index, IView viewport)
		{
			this.view.Children.Insert(index, viewport);
		}

		internal virtual bool RemoveView(IView view)
		{
			bool flag = this.view.Children.Remove(view);
			bool result;
			if (flag)
			{
				view.ViewportController = null;
				result = true;
			}
			else
			{
				result = false;
			}
			return result;
		}

		internal bool IsViewVisible(ViewTypes head)
		{
			return (this.viewsVisible & head) == head;
		}

		public virtual void SetViewVisible(ViewTypes head, bool visible)
		{
			if (visible)
			{
				this.viewsVisible |= head;
			}
			else
			{
				this.viewsVisible &= ~head;
			}
		}

		public virtual void UpdateController()
		{
		}

		public virtual void Reset()
		{
		}

		public virtual void Invalidate()
		{
			bool flag = this.worksheet != null;
			if (flag)
			{
				this.worksheet.RequestInvalidate();
			}
		}

		public virtual void Draw(CellDrawingContext dc)
		{
			bool flag = this.view.Visible && this.view.Width > 0f && this.view.Height > 0f;
			if (flag)
			{
				this.view.Draw(dc);
			}
			this.worksheet.viewDirty = false;
		}

		public virtual IView FocusView { get; set; }

		public virtual IUserVisual FocusVisual { get; set; }

		public virtual bool OnMouseDown(Point location, MouseButtons buttons, InputModifiers modifiers)
		{
			bool flag = false;
			bool flag2 = !flag;
			if (flag2)
			{
				IView viewByPoint = this.view.GetViewByPoint(location);
				bool flag3 = viewByPoint != null;
				if (flag3)
				{
					flag = viewByPoint.OnMouseDown(viewByPoint.PointToView(location), buttons, modifiers);
				}
			}
			return flag;
		}

		public virtual bool OnMouseMove(Point location, MouseButtons buttons)
		{
			bool flag = false;
			bool flag2 = this.FocusView != null;
			if (flag2)
			{
				this.FocusView.OnMouseMove(this.FocusView.PointToView(location), buttons);
			}
			bool flag3 = !flag;
			if (flag3)
			{
				IView viewByPoint = this.view.GetViewByPoint(location);
				bool flag4 = viewByPoint != null;
				if (flag4)
				{
					flag = viewByPoint.OnMouseMove(viewByPoint.PointToView(location), buttons);
				}
			}
			return flag;
		}

		public virtual bool OnMouseUp(Point location, MouseButtons buttons, InputModifiers modifiers)
		{
			bool result = false;
			bool flag = this.FocusView != null;
			if (flag)
			{
				result = this.FocusView.OnMouseUp(this.FocusView.PointToView(location), buttons, modifiers);
			}
			return result;
		}

		public virtual bool OnMouseDoubleClick(Point location, MouseButtons buttons)
		{
			bool result = false;
			IView view = (this.FocusView != null) ? this.FocusView : this.view.GetViewByPoint(location);
			bool flag = view != null;
			if (flag)
			{
				result = view.OnMouseDoubleClick(view.PointToView(location), buttons);
			}
			return result;
		}

		public virtual bool OnKeyDown(KeyCode key)
		{
			return false;
		}

		public virtual void SetFocus()
		{
		}

		public virtual void FreeFocus()
		{
		}

		internal Worksheet worksheet;

		protected IView view;

		protected ViewTypes viewsVisible = ViewTypes.LeadHeader;
	}
}