/// <summary>
/// Initializes a new instance of the CellMouseEventArgs class with
/// the specified source Cell, table, row index, column index and
/// cell bounds
/// </summary>
/// <param name="cell">The Cell that Raised the event</param>
/// <param name="table">The Table the Cell belongs to</param>
/// <param name="cellPos"></param>
/// <param name="cellRect">The Cell's bounding rectangle</param>
public I3CellMouseEventArgs(I3Cell cell, I3Table table, I3CellPos cellPos, Rectangle cellRect)
: base(MouseButtons.None, 0, -1, -1, 0)
{
this.cell = cell;
this.table = table;
this.row = cellPos.Row;
this.column = cellPos.Column;
this.cellRect = cellRect;
}
/// <summary>
/// Initializes a new instance of the CellMouseEventArgs class with
/// the specified source Cell, table, row index, column index and
/// cell bounds
/// </summary>
/// <param name="cell">The Cell that Raised the event</param>
/// <param name="table">The Table the Cell belongs to</param>
/// <param name="cellPos"></param>
/// <param name="cellRect">The Cell's bounding rectangle</param>
/// <param name="mea"></param>
public I3CellMouseEventArgs(I3Cell cell, I3Table table, I3CellPos cellPos, Rectangle cellRect, MouseEventArgs mea)
: base(mea.Button, mea.Clicks, mea.X, mea.Y, mea.Delta)
{
this.cell = cell;
this.table = table;
this.row = cellPos.Row;
this.column = cellPos.Column;
this.cellRect = cellRect;
}
/// <summary>
/// Initializes a new instance of the CellKeyEventArgs class with
/// the specified source Cell, table, row index, column index and
/// cell bounds
/// </summary>
/// <param name="cell">The Cell that Raised the event</param>
/// <param name="table">The Table the Cell belongs to</param>
/// <param name="cellPos"></param>
/// <param name="cellRect">The Cell's bounding rectangle</param>
/// <param name="kea"></param>
public I3CellKeyEventArgs(I3Cell cell, I3Table table, I3CellPos cellPos, Rectangle cellRect, KeyEventArgs kea)
: base(kea.KeyData)
{
this.cell = cell;
this.table = table;
this.row = cellPos.Row;
this.column = cellPos.Column;
this.cellRect = cellRect;
}
/// <summary>
/// Initializes a new instance of the CellEditor class with default settings
/// </summary>
protected I3CellEditor()
{
this.control = null;
this.cell = null;
this.table = null;
this.cellPos = I3CellPos.Empty;
this.cellRect = Rectangle.Empty;
this.mouseMessageFilter = new I3MouseMessageFilter(this);
this.keyMessageFilter = new I3KeyMessageFilter(this);
}
/// <summary>
/// 虚拟方法，从Table中移除编辑控件
/// Conceals the editor from the user and removes it from the Table's
/// Control collection
/// </summary>
protected virtual void RemoveEditControl()
{
this.control.Visible = false;
this.control.Parent = null;
this.table.Focus();
this.cell = null;
this.table = null;
this.cellPos = I3CellPos.Empty;
this.cellRect = Rectangle.Empty;
}
/// <summary>
/// 准备编辑，继承父类的功能
/// Prepares the CellEditor to edit the specified Cell
/// </summary>
/// <param name="cell">The Cell to be edited</param>
/// <param name="table">The Table that contains the Cell</param>
/// <param name="cellPos">A CellPos representing the position of the Cell</param>
/// <param name="cellRect">The Rectangle that represents the Cells location and size</param>
/// <param name="userSetEditorValues">Specifies whether the ICellEditors
/// starting value has already been set by the user</param>
/// <returns>true if the ICellEditor can continue editing the Cell, false otherwise</returns>
public override bool PrepareForEditing(I3Cell cell, I3Table table, I3CellPos cellPos, Rectangle cellRect, bool userSetEditorValues)
{
if (!(table.ColumnModel.Columns[cellPos.Column] is I3DropDownColumn))
{
throw new InvalidOperationException("Cannot edit Cell as DropDownCellEditor can only be used with a DropDownColumn");
}
I3DropDownColumn dropDownColumn = table.ColumnModel.Columns[cellPos.Column] as I3DropDownColumn;
this.DropDownStyle = dropDownColumn.DropDownStyle;
return(base.PrepareForEditing(cell, table, cellPos, cellRect, userSetEditorValues));
}
/// <summary>
/// Prepares the CellEditor to edit the specified Cell
/// </summary>
/// <param name="cell">The Cell to be edited</param>
/// <param name="table">The Table that contains the Cell</param>
/// <param name="cellPos">A CellPos representing the position of the Cell</param>
/// <param name="cellRect">The Rectangle that represents the Cells location and size</param>
/// <param name="userSetEditorValues">Specifies whether the ICellEditors
/// starting value has already been set by the user</param>
/// <returns>true if the ICellEditor can continue editing the Cell, false otherwise</returns>
public override bool PrepareForEditing(I3Cell cell, I3Table table, I3CellPos cellPos, Rectangle cellRect, bool userSetEditorValues)
{
//
if (!(table.ColumnModel.Columns[cellPos.Column] is I3NumberColumn))
{
throw new InvalidOperationException("Cannot edit Cell as NumberCellEditor can only be used with a NumberColumn");
}
if (!(table.ColumnModel.GetCellRenderer(cellPos.Column) is I3NumberCellRenderer))
{
throw new InvalidOperationException("Cannot edit Cell as NumberCellEditor can only be used with a NumberColumn that uses a NumberCellRenderer");
}
this.NumberColumnType = ((I3NumberColumn)table.ColumnModel.Columns[cellPos.Column]).NumberColumnType;
this.Minimum = Convert.ToDecimal(((I3NumberColumn)table.ColumnModel.Columns[cellPos.Column]).Minimum);
this.Maximum = Convert.ToDecimal(((I3NumberColumn)table.ColumnModel.Columns[cellPos.Column]).Maximum);
this.Increment = Convert.ToDecimal(((I3NumberColumn)table.ColumnModel.Columns[cellPos.Column]).Increment);
return(base.PrepareForEditing(cell, table, cellPos, cellRect, userSetEditorValues));
}
/// <summary>
/// 虚拟方法，准备编辑，在ICellEditor中定义
/// Prepares the CellEditor to edit the specified Cell
/// </summary>
/// <param name="cell">The Cell to be edited</param>
/// <param name="table">The Table that contains the Cell</param>
/// <param name="cellPos">A CellPos representing the position of the Cell</param>
/// <param name="cellRect">The Rectangle that represents the Cells location and size</param>
/// <param name="userSetEditorValues">Specifies whether the ICellEditors
/// starting value has already been set by the user</param>
/// <returns>true if the ICellEditor can continue editing the Cell, false otherwise</returns>
public virtual bool PrepareForEditing(I3Cell cell, I3Table table, I3CellPos cellPos, Rectangle cellRect, bool userSetEditorValues)
{
//初始化值
this.cell = cell;
this.table = table;
this.cellPos = cellPos;
this.cellRect = cellRect;
//检查用户是否已经自己设置了编辑控件的值，如果没有则调用 SetEditValue() 方法进行设置
// check if the user has already set the editors value for us
if (!userSetEditorValues)
{
this.SetEditValue();
}
//设置编辑控件的位置和大小
this.SetEditLocation(cellRect);
//引发开始编辑事件
// raise the BeginEdit event
I3CellEditEventArgs e = new I3CellEditEventArgs(cell, this, table, cellPos.Row, cellPos.Column, cellRect);
e.Handled = userSetEditorValues;
this.OnBeginEdit(e);
//如果编辑被退出，移动编辑控件并返回false
// if the edit has been canceled, remove the editor and return false
if (e.Cancel)
{
this.RemoveEditControl();
return(false);
}
return(true);
}
/// <summary>
/// Gets whether the specified Table is using a NumericCellEditor to edit the
/// Cell at the specified CellPos
/// </summary>
/// <param name="table">The Table to check</param>
/// <param name="cellPos">A CellPos that represents the Cell to check</param>
/// <returns>true if the specified Table is using a NumericCellEditor to edit the
/// Cell at the specified CellPos, false otherwise</returns>
internal bool TableUsingNumericCellEditor(I3Table table, I3CellPos cellPos)
{
return(table.IsEditing && cellPos == table.EditingCell && table.EditingCellEditor is I3NumberCellEditor);
}
