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

namespace FastReport.Dialog
{
    /// <summary>
    /// Base class for all dialog controls such as <b>ButtonControl</b>, <b>TextBoxControl</b>.
    /// </summary>
    public abstract partial class DialogControl : DialogComponentBase
    {
        #region Fields
        private Control control;
        private string clickEvent;
        private string doubleClickEvent;
        private string enterEvent;
        private string leaveEvent;
        private string keyDownEvent;
        private string keyPressEvent;
        private string keyUpEvent;
        private string mouseDownEvent;
        private string mouseMoveEvent;
        private string mouseUpEvent;
        private string mouseEnterEvent;
        private string mouseLeaveEvent;
        private string resizeEvent;
        private string textChangedEvent;
        private string paintEvent;
        private PropertyInfo bindableProperty;
        #endregion

        #region Properties
        /// <summary>
        /// Occurs when the control is clicked.
        /// Wraps the <see cref="System.Windows.Forms.Control.Click"/> event.
        /// </summary>
        public event EventHandler Click;

        /// <summary>
        /// Occurs when the control is double-clicked.
        /// Wraps the <see cref="System.Windows.Forms.Control.DoubleClick"/> event.
        /// </summary>
        public event EventHandler DoubleClick;

        /// <summary>
        /// Occurs when the control is entered.
        /// Wraps the <see cref="System.Windows.Forms.Control.Enter"/> event.
        /// </summary>
        public event EventHandler Enter;

        /// <summary>
        /// Occurs when the input focus leaves the control.
        /// Wraps the <see cref="System.Windows.Forms.Control.Leave"/> event.
        /// </summary>
        public event EventHandler Leave;

        /// <summary>
        /// Occurs when a key is pressed while the control has focus.
        /// Wraps the <see cref="System.Windows.Forms.Control.KeyDown"/> event.
        /// </summary>
        public event KeyEventHandler KeyDown;

        /// <summary>
        /// Occurs when a key is pressed while the control has focus.
        /// Wraps the <see cref="System.Windows.Forms.Control.KeyPress"/> event.
        /// </summary>
        public event KeyPressEventHandler KeyPress;

        /// <summary>
        /// Occurs when a key is released while the control has focus.
        /// Wraps the <see cref="System.Windows.Forms.Control.KeyUp"/> event.
        /// </summary>
        public event KeyEventHandler KeyUp;

        /// <summary>
        /// Occurs when the mouse pointer is over the control and a mouse button is pressed.
        /// Wraps the <see cref="System.Windows.Forms.Control.MouseDown"/> event.
        /// </summary>
        public event MouseEventHandler MouseDown;

        /// <summary>
        /// Occurs when the mouse pointer is moved over the control.
        /// Wraps the <see cref="System.Windows.Forms.Control.MouseMove"/> event.
        /// </summary>
        public event MouseEventHandler MouseMove;

        /// <summary>
        /// Occurs when the mouse pointer is over the control and a mouse button is released.
        /// Wraps the <see cref="System.Windows.Forms.Control.MouseUp"/> event.
        /// </summary>
        public event MouseEventHandler MouseUp;

        /// <summary>
        /// Occurs when the mouse pointer enters the control.
        /// Wraps the <see cref="System.Windows.Forms.Control.MouseEnter"/> event.
        /// </summary>
        public event EventHandler MouseEnter;

        /// <summary>
        /// Occurs when the mouse pointer leaves the control.
        /// Wraps the <see cref="System.Windows.Forms.Control.MouseLeave"/> event.
        /// </summary>
        public event EventHandler MouseLeave;

        /// <summary>
        /// Occurs when the control is resized.
        /// Wraps the <see cref="System.Windows.Forms.Control.Resize"/> event.
        /// </summary>
        public event EventHandler Resize;

        /// <summary>
        /// Occurs when the Text property value changes.
        /// Wraps the <see cref="System.Windows.Forms.Control.TextChanged"/> event.
        /// </summary>
        public event EventHandler TextChanged;

        /// <summary>
        /// Occurs when the control is redrawn.
        /// Wraps the <see cref="System.Windows.Forms.Control.Paint"/> event.
        /// </summary>
        public event PaintEventHandler Paint;

        /// <summary>
        /// Gets an internal <b>Control</b>.
        /// </summary>
        [Browsable(false)]
        public Control Control
        {
            get { return control; }
            set { control = value; }
        }

        /// <summary>
        /// Gets or sets the background color for the control.
        /// Wraps the <see cref="System.Windows.Forms.Control.BackColor"/> property.
        /// </summary>
        [Category("Appearance")]
        [Editor("FastReport.TypeEditors.ColorEditor, FastReport", typeof(UITypeEditor))]
        public virtual Color BackColor
        {
            get { return Control.BackColor; }
            set { Control.BackColor = value; }
        }

        /// <summary>
        /// Gets or sets the cursor that is displayed when the mouse pointer is over the control.
        /// Wraps the <see cref="System.Windows.Forms.Control.Cursor"/> property.
        /// </summary>
        [Category("Appearance")]
        public Cursor Cursor
        {
            get { return Control.Cursor; }
            set { Control.Cursor = value; }
        }

        /// <summary>
        /// Gets or sets a value indicating whether the control can respond to user interaction.
        /// Wraps the <see cref="System.Windows.Forms.Control.Enabled"/> property.
        /// </summary>
        [DefaultValue(true)]
        [Category("Behavior")]
        public bool Enabled
        {
            get { return Control.Enabled; }
            set
            {
                Control.Enabled = value;
                OnEnabledChanged();
            }
        }

        /// <summary>
        /// Gets or sets the font of the text displayed by the control.
        /// Wraps the <see cref="System.Windows.Forms.Control.Font"/> property.
        /// </summary>
        [Category("Appearance")]
        public Font Font
        {
            get { return Control.Font; }
            set { Control.Font = value; }
        }

        /// <summary>
        /// Gets or sets the foreground color of the control.
        /// Wraps the <see cref="System.Windows.Forms.Control.ForeColor"/> property.
        /// </summary>
        [Category("Appearance")]
        [Editor("FastReport.TypeEditors.ColorEditor, FastReport", typeof(UITypeEditor))]
        public virtual Color ForeColor
        {
            get { return Control.ForeColor; }
            set { Control.ForeColor = value; }
        }

        /// <summary>
        /// Gets or sets a value indicating whether control's elements are aligned to support locales using right-to-left fonts.
        /// Wraps the <see cref="System.Windows.Forms.Control.RightToLeft"/> property.
        /// </summary>
        [DefaultValue(RightToLeft.No)]
        [Category("Appearance")]
        public RightToLeft RightToLeft
        {
            get { return Control.RightToLeft; }
            set { Control.RightToLeft = value; }
        }

        /// <summary>
        /// Gets or sets the tab order of the control within its container.
        /// Wraps the <see cref="System.Windows.Forms.Control.TabIndex"/> property.
        /// </summary>
        [DefaultValue(0)]
        [Category("Behavior")]
        public int TabIndex
        {
            get { return Control.TabIndex; }
            set { Control.TabIndex = value; }
        }

        /// <summary>
        /// Gets or sets a value indicating whether the user can give the focus to this control using the TAB key.
        /// Wraps the <see cref="System.Windows.Forms.Control.TabStop"/> property.
        /// </summary>
        [DefaultValue(true)]
        [Category("Behavior")]
        public bool TabStop
        {
            get { return Control.TabStop; }
            set { Control.TabStop = value; }
        }

        /// <summary>
        /// Gets or sets the text associated with this control.
        /// Wraps the <see cref="System.Windows.Forms.Control.Text"/> property.
        /// </summary>
        [Category("Data")]
        [Editor("System.ComponentModel.Design.MultilineStringEditor, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(UITypeEditor))]
        public virtual string Text
        {
            get { return Control.Text; }
            set { Control.Text = value; }
        }

        /// <summary>
        /// Gets or sets which control borders are docked to its parent control and determines how a control is resized with its parent.
        /// Wraps the <see cref="System.Windows.Forms.Control.Dock"/> property.
        /// </summary>
        [Category("Layout")]
        public override DockStyle Dock
        {
            get { return Control.Dock; }
            set { Control.Dock = value; }
        }

        /// <summary>
        /// Gets or sets the edges of the container to which a control is bound and determines how a control is resized with its parent.
        /// Wraps the <see cref="System.Windows.Forms.Control.Anchor"/> property.
        /// </summary>
        [Category("Layout")]
        public override AnchorStyles Anchor
        {
            get { return Control.Anchor; }
            set { Control.Anchor = value; }
        }

        /// <summary>
        /// Gets or sets a value indicating whether the control is displayed.
        /// Wraps the <see cref="System.Windows.Forms.Control.Visible"/> property.
        /// </summary>
        [Category("Behavior")]
        public override bool Visible
        {
            get { return base.Visible; }
            set
            {
                base.Visible = value;
                Control.Visible = value;
            }
        }

        /// <summary>
        /// Gets or sets a property that returns actual data contained in a control. This value is used
        /// in the "Data" window.
        /// </summary>
        [Browsable(false)]
        public PropertyInfo BindableProperty
        {
            get { return bindableProperty; }
            set { bindableProperty = value; }
        }

        /// <summary>
        /// Gets or sets a script method name that will be used to handle the 
        /// <see cref="Click"/> event.
        /// </summary>
        [Category("Events")]
        public string ClickEvent
        {
            get { return clickEvent; }
            set { clickEvent = value; }
        }

        /// <summary>
        /// Gets or sets a script method name that will be used to handle the 
        /// <see cref="DoubleClick"/> event.
        /// </summary>
        [Category("Events")]
        public string DoubleClickEvent
        {
            get { return doubleClickEvent; }
            set { doubleClickEvent = value; }
        }

        /// <summary>
        /// Gets or sets a script method name that will be used to handle the 
        /// <see cref="Enter"/> event.
        /// </summary>
        [Category("Events")]
        public string EnterEvent
        {
            get { return enterEvent; }
            set { enterEvent = value; }
        }

        /// <summary>
        /// Gets or sets a script method name that will be used to handle the 
        /// <see cref="Leave"/> event.
        /// </summary>
        [Category("Events")]
        public string LeaveEvent
        {
            get { return leaveEvent; }
            set { leaveEvent = value; }
        }

        /// <summary>
        /// Gets or sets a script method name that will be used to handle the 
        /// <see cref="KeyDown"/> event.
        /// </summary>
        [Category("Events")]
        public string KeyDownEvent
        {
            get { return keyDownEvent; }
            set { keyDownEvent = value; }
        }

        /// <summary>
        /// Gets or sets a script method name that will be used to handle the 
        /// <see cref="KeyPress"/> event.
        /// </summary>
        [Category("Events")]
        public string KeyPressEvent
        {
            get { return keyPressEvent; }
            set { keyPressEvent = value; }
        }

        /// <summary>
        /// Gets or sets a script method name that will be used to handle the 
        /// <see cref="KeyUp"/> event.
        /// </summary>
        [Category("Events")]
        public string KeyUpEvent
        {
            get { return keyUpEvent; }
            set { keyUpEvent = value; }
        }

        /// <summary>
        /// Gets or sets a script method name that will be used to handle the 
        /// <see cref="MouseDown"/> event.
        /// </summary>
        [Category("Events")]
        public string MouseDownEvent
        {
            get { return mouseDownEvent; }
            set { mouseDownEvent = value; }
        }

        /// <summary>
        /// Gets or sets a script method name that will be used to handle the 
        /// <see cref="MouseMove"/> event.
        /// </summary>
        [Category("Events")]
        public string MouseMoveEvent
        {
            get { return mouseMoveEvent; }
            set { mouseMoveEvent = value; }
        }

        /// <summary>
        /// Gets or sets a script method name that will be used to handle the 
        /// <see cref="MouseUp"/> event.
        /// </summary>
        [Category("Events")]
        public string MouseUpEvent
        {
            get { return mouseUpEvent; }
            set { mouseUpEvent = value; }
        }

        /// <summary>
        /// Gets or sets a script method name that will be used to handle the 
        /// <see cref="MouseEnter"/> event.
        /// </summary>
        [Category("Events")]
        public string MouseEnterEvent
        {
            get { return mouseEnterEvent; }
            set { mouseEnterEvent = value; }
        }

        /// <summary>
        /// Gets or sets a script method name that will be used to handle the 
        /// <see cref="MouseLeave"/> event.
        /// </summary>
        [Category("Events")]
        public string MouseLeaveEvent
        {
            get { return mouseLeaveEvent; }
            set { mouseLeaveEvent = value; }
        }

        /// <summary>
        /// Gets or sets a script method name that will be used to handle the 
        /// <see cref="Resize"/> event.
        /// </summary>
        [Category("Events")]
        public string ResizeEvent
        {
            get { return resizeEvent; }
            set { resizeEvent = value; }
        }

        /// <summary>
        /// Gets or sets a script method name that will be used to handle the 
        /// <see cref="TextChanged"/> event.
        /// </summary>
        [Category("Events")]
        public string TextChangedEvent
        {
            get { return textChangedEvent; }
            set { textChangedEvent = value; }
        }

        /// <summary>
        /// Gets or sets a script method name that will be used to handle the 
        /// <see cref="Paint"/> event.
        /// </summary>
        [Category("Events")]
        public string PaintEvent
        {
            get { return paintEvent; }
            set { paintEvent = value; }
        }

        /// <inheritdoc/>
        public override float Left
        {
            get { return Control.Left; }
            set
            {
                if (!IsDesigning || !HasRestriction(Restrictions.DontMove))
                    Control.Left = (int)value;
            }
        }

        /// <inheritdoc/>
        public override float Top
        {
            get { return Control.Top; }
            set
            {
                if (!IsDesigning || !HasRestriction(Restrictions.DontMove))
                    Control.Top = (int)value;
            }
        }

        /// <inheritdoc/>
        public override float Width
        {
            get { return Control.Width; }
            set
            {
                if (!IsDesigning || !HasRestriction(Restrictions.DontResize))
                    Control.Width = (int)value;
            }
        }

        /// <inheritdoc/>
        public override float Height
        {
            get { return Control.Height; }
            set
            {
                if (!IsDesigning || !HasRestriction(Restrictions.DontResize))
                    Control.Height = (int)value;
            }
        }

        #endregion

        #region Private Methods
        private void Control_Click(object sender, EventArgs e)
        {
            OnClick(e);
        }

        private void Control_DoubleClick(object sender, EventArgs e)
        {
            OnDoubleClick(e);
        }

        private void Control_Enter(object sender, EventArgs e)
        {
            OnEnter(e);
        }

        private void Control_Leave(object sender, EventArgs e)
        {
            OnLeave(e);
        }

        private void Control_KeyDown(object sender, KeyEventArgs e)
        {
            OnKeyDown(e);
        }

        private void Control_KeyPress(object sender, KeyPressEventArgs e)
        {
            OnKeyPress(e);
        }

        private void Control_KeyUp(object sender, KeyEventArgs e)
        {
            OnKeyUp(e);
        }

        private void Control_MouseDown(object sender, MouseEventArgs e)
        {
            OnMouseDown(e);
        }

        private void Control_MouseMove(object sender, MouseEventArgs e)
        {
            OnMouseMove(e);
        }

        private void Control_MouseUp(object sender, MouseEventArgs e)
        {
            OnMouseUp(e);
        }

        private void Control_MouseEnter(object sender, EventArgs e)
        {
            OnMouseEnter(e);
        }

        private void Control_MouseLeave(object sender, EventArgs e)
        {
            OnMouseLeave(e);
        }

        private void Control_Resize(object sender, EventArgs e)
        {
            OnResize(e);
        }

        private void Control_TextChanged(object sender, EventArgs e)
        {
            OnTextChanged(e);
        }

        private void Control_Paint(object sender, PaintEventArgs e)
        {
            OnPaint(e);
        }
        #endregion

        #region Protected Methods
        /// <inheritdoc/>
        protected override void Dispose(bool disposing)
        {
            base.Dispose(disposing);
            if (disposing)
                Control.Dispose();
        }

        /// <summary>
        /// Called when the control's Enabled state changed.
        /// </summary>
        protected virtual void OnEnabledChanged()
        {
        }

        /// <summary>
        /// Attaches <b>Control</b> events to its event handlers.
        /// </summary>
        /// <remarks>
        /// Override this method if your custom control has own events.
        /// </remarks>
        /// <example>See the example of <b>AttachEvents</b> implementation used in the <b>CheckBoxControl</b>:
        /// <code>
        /// protected override void AttachEvents()
        /// {
        ///   base.AttachEvents();
        ///   CheckBox.CheckedChanged += new EventHandler(CheckBox_CheckedChanged);
        /// }
        /// 
        /// private void CheckBox_CheckedChanged(object sender, EventArgs e)
        /// {
        ///   if (CheckedChanged != null)
        ///     CheckedChanged(this, e);
        ///   InvokeEvent(CheckedChangedEvent, e);
        /// }
        /// </code>
        /// </example>
        protected virtual void AttachEvents()
        {
            Control.Click += new EventHandler(Control_Click);
            Control.DoubleClick += new EventHandler(Control_DoubleClick);
            Control.Enter += new EventHandler(Control_Enter);
            Control.Leave += new EventHandler(Control_Leave);
            Control.KeyDown += new KeyEventHandler(Control_KeyDown);
            Control.KeyPress += new KeyPressEventHandler(Control_KeyPress);
            Control.KeyUp += new KeyEventHandler(Control_KeyUp);
            Control.MouseDown += new MouseEventHandler(Control_MouseDown);
            Control.MouseMove += new MouseEventHandler(Control_MouseMove);
            Control.MouseUp += new MouseEventHandler(Control_MouseUp);
            Control.MouseEnter += new EventHandler(Control_MouseEnter);
            Control.MouseLeave += new EventHandler(Control_MouseLeave);
            Control.Resize += new EventHandler(Control_Resize);
            Control.TextChanged += new EventHandler(Control_TextChanged);
            Control.Paint += new PaintEventHandler(Control_Paint);
        }

        /// <summary>
        /// Detaches <b>Control</b> events from its event handlers.
        /// </summary>
        /// <remarks>
        /// Override this method if your custom control has own events. In this method, you should
        /// detach control's events that were attached in the <see cref="AttachEvents"/> method.
        /// </remarks>
        /// <example>See the example of <b>DetachEvents</b> implementation used in the <b>CheckBoxControl</b>:
        /// <code>
        /// protected override void DetachEvents()
        /// {
        ///   base.DetachEvents();
        ///   CheckBox.CheckedChanged -= new EventHandler(CheckBox_CheckedChanged);
        /// }
        /// </code>
        /// </example>
        protected virtual void DetachEvents()
        {
            Control.Click -= new EventHandler(Control_Click);
            Control.DoubleClick -= new EventHandler(Control_DoubleClick);
            Control.Enter -= new EventHandler(Control_Enter);
            Control.Leave -= new EventHandler(Control_Leave);
            Control.KeyDown -= new KeyEventHandler(Control_KeyDown);
            Control.KeyPress -= new KeyPressEventHandler(Control_KeyPress);
            Control.KeyUp -= new KeyEventHandler(Control_KeyUp);
            Control.MouseDown -= new MouseEventHandler(Control_MouseDown);
            Control.MouseMove -= new MouseEventHandler(Control_MouseMove);
            Control.MouseUp -= new MouseEventHandler(Control_MouseUp);
            Control.MouseEnter -= new EventHandler(Control_MouseEnter);
            Control.MouseLeave -= new EventHandler(Control_MouseLeave);
            Control.Resize -= new EventHandler(Control_Resize);
            Control.TextChanged -= new EventHandler(Control_TextChanged);
            Control.Paint -= new PaintEventHandler(Control_Paint);
        }

        #endregion

        #region Public Methods
        /// <inheritdoc/>
        public override void SetParent(Base value)
        {
            base.SetParent(value);
            if (Parent is DialogPage)
                Control.Parent = (Parent as DialogPage).Form;
            else if (Parent is ParentControl)
                Control.Parent = (Parent as ParentControl).Control;
            else if (Parent == null)
                Control.Parent = null;
#if !FRCORE
            if (Control.Parent != null)
            {
                // in winforms, the controls are added in opposite order
                Control.BringToFront();
                // this will reset the font to form's font. We need this to ensure the automatic form scaling will do the work
                if (Control.Font.Equals(Control.Parent.Font))
                    Control.Font = null;
            }
#endif
        }

        /// <inheritdoc/>
        public override void Serialize(FRWriter writer)
        {       
            if (Page == null)
                return;

            DialogControl c = writer.DiffObject as DialogControl;
            base.Serialize(writer);

            if (BackColor != c.BackColor)
                writer.WriteValue("BackColor", BackColor);
            if (Cursor != c.Cursor)
                writer.WriteValue("Cursor", Cursor);
            if (Enabled != c.Enabled)
                writer.WriteBool("Enabled", Enabled);
            
            Form form = (Page as DialogPage).Form;
            // fixed 27.08.2021 for FR.Core, if uncomment this condition - font doesn't serialise => next open report with font = null
            if (form != null /*&& !Font.Equals(Control.Parent.Font)*/ && writer.ItemName != "inherited")
            {
#if !FRCORE
                float fontDpiMultiplier = form.FontDpiMultiplier();
#else
                float fontDpiMultiplier = 1;
#endif
                using (Font f = new Font(Font.FontFamily, Font.Size / fontDpiMultiplier, Font.Style))
                    writer.WriteValue("Font", f);
            }
            if (ForeColor != c.ForeColor)
                writer.WriteValue("ForeColor", ForeColor);
            if (RightToLeft != c.RightToLeft)
                writer.WriteValue("RightToLeft", RightToLeft);
            writer.WriteInt("TabIndex", TabIndex);
            if (TabStop != c.TabStop)
                writer.WriteBool("TabStop", TabStop);
            if (Text != c.Text)
                writer.WriteStr("Text", Text);

            if (ClickEvent != c.ClickEvent)
                writer.WriteStr("ClickEvent", ClickEvent);
            if (DoubleClickEvent != c.DoubleClickEvent)
                writer.WriteStr("DoubleClickEvent", DoubleClickEvent);
            if (EnterEvent != c.EnterEvent)
                writer.WriteStr("EnterEvent", EnterEvent);
            if (LeaveEvent != c.LeaveEvent)
                writer.WriteStr("LeaveEvent", LeaveEvent);
            if (KeyDownEvent != c.KeyDownEvent)
                writer.WriteStr("KeyDownEvent", KeyDownEvent);
            if (KeyPressEvent != c.KeyPressEvent)
                writer.WriteStr("KeyPressEvent", KeyPressEvent);
            if (KeyUpEvent != c.KeyUpEvent)
                writer.WriteStr("KeyUpEvent", KeyUpEvent);
            if (MouseDownEvent != c.MouseDownEvent)
                writer.WriteStr("MouseDownEvent", MouseDownEvent);
            if (MouseMoveEvent != c.MouseMoveEvent)
                writer.WriteStr("MouseMoveEvent", MouseMoveEvent);
            if (MouseUpEvent != c.MouseUpEvent)
                writer.WriteStr("MouseUpEvent", MouseUpEvent);
            if (MouseEnterEvent != c.MouseEnterEvent)
                writer.WriteStr("MouseEnterEvent", MouseEnterEvent);
            if (MouseLeaveEvent != c.MouseLeaveEvent)
                writer.WriteStr("MouseLeaveEvent", MouseLeaveEvent);
            if (ResizeEvent != c.ResizeEvent)
                writer.WriteStr("ResizeEvent", ResizeEvent);
            if (TextChangedEvent != c.TextChangedEvent)
                writer.WriteStr("TextChangedEvent", TextChangedEvent);
            if (PaintEvent != c.PaintEvent)
                writer.WriteStr("PaintEvent", PaintEvent);
        }

        /// <summary>
        /// Initializes the control before display it in the dialog form.
        /// </summary>
        /// <remarks>
        /// This method is called when report is run.
        /// </remarks>
        public virtual void InitializeControl()
        {
            AttachEvents();
        }

        /// <summary>
        /// Finalizes the control after its parent form is closed.
        /// </summary>
        /// <remarks>
        /// This method is called when report is run.
        /// </remarks>
        public virtual void FinalizeControl()
        {
            DetachEvents();
        }

        /// <summary>
        /// Sets input focus to the control.
        /// </summary>
        public void Focus()
        {
            Control.Focus();
        }

        /// <summary>
        /// Conceals the control from the user.
        /// </summary>
        public void Hide()
        {
            Control.Hide();
        }

        /// <summary>
        /// Displays the control to the user.
        /// </summary>
        public void Show()
        {
            Control.Show();
        }
        #endregion

        #region Invoke Events
        /// <summary>
        /// This method fires the <b>Click</b> event and the script code connected to the <b>ClickEvent</b>.
        /// </summary>
        /// <param name="e">Event data.</param>
        public virtual void OnClick(EventArgs e)
        {
            if (Click != null)
                Click(this, e);
            InvokeEvent(ClickEvent, e);
        }

        /// <summary>
        /// This method fires the <b>DoubleClick</b> event and the script code connected to the <b>DoubleClickEvent</b>.
        /// </summary>
        /// <param name="e">Event data.</param>
        public virtual void OnDoubleClick(EventArgs e)
        {
            if (DoubleClick != null)
                DoubleClick(this, e);
            InvokeEvent(DoubleClickEvent, e);
        }

        /// <summary>
        /// This method fires the <b>Enter</b> event and the script code connected to the <b>EnterEvent</b>.
        /// </summary>
        /// <param name="e">Event data.</param>
        public virtual void OnEnter(EventArgs e)
        {
            if (Enter != null)
                Enter(this, e);
            InvokeEvent(EnterEvent, e);
        }

        /// <summary>
        /// This method fires the <b>Leave</b> event and the script code connected to the <b>LeaveEvent</b>.
        /// </summary>
        /// <param name="e">Event data.</param>
        public virtual void OnLeave(EventArgs e)
        {
            if (Leave != null)
                Leave(this, e);
            InvokeEvent(LeaveEvent, e);
        }

        /// <summary>
        /// This method fires the <b>KeyDown</b> event and the script code connected to the <b>KeyDownEvent</b>.
        /// </summary>
        /// <param name="e">Event data.</param>
        public virtual void OnKeyDown(KeyEventArgs e)
        {
            if (KeyDown != null)
                KeyDown(this, e);
            InvokeEvent(KeyDownEvent, e);
        }

        /// <summary>
        /// This method fires the <b>KeyPress</b> event and the script code connected to the <b>KeyPressEvent</b>.
        /// </summary>
        /// <param name="e">Event data.</param>
        public virtual void OnKeyPress(KeyPressEventArgs e)
        {
            if (KeyPress != null)
                KeyPress(this, e);
            InvokeEvent(KeyPressEvent, e);
        }

        /// <summary>
        /// This method fires the <b>KeyUp</b> event and the script code connected to the <b>KeyUpEvent</b>.
        /// </summary>
        /// <param name="e">Event data.</param>
        public virtual void OnKeyUp(KeyEventArgs e)
        {
            if (KeyUp != null)
                KeyUp(this, e);
            InvokeEvent(KeyUpEvent, e);
        }

        /// <summary>
        /// This method fires the <b>MouseDown</b> event and the script code connected to the <b>MouseDownEvent</b>.
        /// </summary>
        /// <param name="e">Event data.</param>
        public virtual void OnMouseDown(MouseEventArgs e)
        {
            if (MouseDown != null)
                MouseDown(this, e);
            InvokeEvent(MouseDownEvent, e);
        }

        /// <summary>
        /// This method fires the <b>MouseMove</b> event and the script code connected to the <b>MouseMoveEvent</b>.
        /// </summary>
        /// <param name="e">Event data.</param>
        public virtual void OnMouseMove(MouseEventArgs e)
        {
            if (MouseMove != null)
                MouseMove(this, e);
            InvokeEvent(MouseMoveEvent, e);
        }

        /// <summary>
        /// This method fires the <b>MouseUp</b> event and the script code connected to the <b>MouseUpEvent</b>.
        /// </summary>
        /// <param name="e">Event data.</param>
        public virtual void OnMouseUp(MouseEventArgs e)
        {
            if (MouseUp != null)
                MouseUp(this, e);
            InvokeEvent(MouseUpEvent, e);
        }

        /// <summary>
        /// This method fires the <b>MouseEnter</b> event and the script code connected to the <b>MouseEnterEvent</b>.
        /// </summary>
        /// <param name="e">Event data.</param>
        public virtual void OnMouseEnter(EventArgs e)
        {
            if (MouseEnter != null)
                MouseEnter(this, e);
            InvokeEvent(MouseEnterEvent, e);
        }

        /// <summary>
        /// This method fires the <b>MouseLeave</b> event and the script code connected to the <b>MouseLeaveEvent</b>.
        /// </summary>
        /// <param name="e">Event data.</param>
        public virtual void OnMouseLeave(EventArgs e)
        {
            if (MouseLeave != null)
                MouseLeave(this, e);
            InvokeEvent(MouseLeaveEvent, e);
        }

        /// <summary>
        /// This method fires the <b>Resize</b> event and the script code connected to the <b>ResizeEvent</b>.
        /// </summary>
        /// <param name="e">Event data.</param>
        public virtual void OnResize(EventArgs e)
        {
            if (Resize != null)
                Resize(this, e);
            InvokeEvent(ResizeEvent, e);
        }

        /// <summary>
        /// This method fires the <b>TextChanged</b> event and the script code connected to the <b>TextChangedEvent</b>.
        /// </summary>
        /// <param name="e">Event data.</param>
        public virtual void OnTextChanged(EventArgs e)
        {
            if (TextChanged != null)
                TextChanged(this, e);
            InvokeEvent(TextChangedEvent, e);
        }

        /// <summary>
        /// This method fires the <b>Paint</b> event and the script code connected to the <b>PaintEvent</b>.
        /// </summary>
        /// <param name="e">Event data.</param>
        public virtual void OnPaint(PaintEventArgs e)
        {
            if (Paint != null)
                Paint(this, e);
            InvokeEvent(PaintEvent, e);
        }
        #endregion
    }
}