// user click captured - decide what menu items are appropriate and show them
public void showContextMenus(DataGridView dgv, MouseEventArgs me, DataTable dt)
{
dtColumnInformation dtCI = new dtColumnInformation(dt);
Utilities utils = new Utilities();
DataGridView.HitTestInfo ht = dgv.HitTest(me.X, me.Y);
int colndx = ht.ColumnIndex;
int rowndx = ht.RowIndex;
if (rowndx > 0 && colndx > 0) return; //cell hit, go away
if (rowndx < 0 && colndx >= 0)
{
//col header hit, show proper menu
intSelectedColIndex = colndx;
//do nothing if col 0 selected
if (colndx >= 1)
{
string colname = dt.Columns[colndx].Caption;
if (colname == strResponseVarColName)
{
if (utils.testValueAttribute(dt.Columns[intResponseVarColIndex], VBCommon.Globals.DEPENDENTVAR))
{
cmforResponseVar.MenuItems[0].Enabled = true; //we can transform a response variable
}
else
{
cmforResponseVar.MenuItems[0].Enabled = false; //but we cannot transform a transformed response
}
if (utils.testValueAttribute(dt.Columns[intResponseVarColIndex], VBCommon.Globals.DEPENDENTVARIBLETRANSFORM))
{
cmforResponseVar.MenuItems[2].Enabled = true; //we can untransform the transformed response variable
}
else
{
cmforResponseVar.MenuItems[2].Enabled = false; //but cannot untransform a response variable
}
cmforResponseVar.Show(dgv, new Point(me.X, me.Y));
}
else
{
//show context menu for ivs
if (dtCI.getColStatus(dt.Columns[intSelectedColIndex].ColumnName.ToString()))
{
//here if col enabled
cmforIVs.MenuItems[0].Enabled = true;
cmforIVs.MenuItems[1].Enabled = false; //cannot enable enabled col
cmforIVs.MenuItems[2].Enabled = true;
//response variable must be a ME, T(RV) or I(IV) not created by general transform
//if they do this then we're to remove all general operations performed,
if (canSetRV(utils)) cmforIVs.MenuItems[2].Enabled = true;
else cmforIVs.MenuItems[2].Enabled = false;
if (dt.Columns[intSelectedColIndex].ExtendedProperties.ContainsKey(VBCommon.Globals.MAINEFFECT))
cmforIVs.MenuItems[4].Enabled = false; //cannot remove maineffect column
else cmforIVs.MenuItems[4].Enabled = true;
}
else
{
//here if col disabled
cmforIVs.MenuItems[0].Enabled = false; //cannot disable disabled col
cmforIVs.MenuItems[1].Enabled = true;
cmforIVs.MenuItems[2].Enabled = false; //cannot disabled the response variable
}
cmforIVs.Show(dgv, new Point(me.X, me.Y));
}
}
}
else if (rowndx >= 0 && colndx < 0)
{
//row header hit, show menu
intSelectedRowIndex = rowndx;
if (dtRI.getRowStatus(dt.Rows[intSelectedRowIndex][0].ToString()))
{
//here if row is enabled
cmforRows.MenuItems[0].Enabled = true;
cmforRows.MenuItems[1].Enabled = false; //cannot enable enabled row
}
else
{
//here if row is disabled
cmforRows.MenuItems[0].Enabled = false; //cannot disable disabled row
cmforRows.MenuItems[1].Enabled = true;
}
cmforRows.Show(dgv, new Point(me.X, me.Y));
}
}
// determine if we can set the selected column as the response variable
/// (cannot set a transformed independent variable as the response variable - or categorical variables....)
public bool canSetRV(Utilities utils)
{
bool colisT = dt.Columns[intSelectedColIndex].ExtendedProperties.ContainsKey(VBCommon.Globals.TRANSFORM);
bool colisI = dt.Columns[intSelectedColIndex].ExtendedProperties.ContainsKey(VBCommon.Globals.OPERATION);
bool colisCat = utils.testValueAttribute(dt.Columns[intSelectedColIndex], VBCommon.Globals.CATEGORICAL);
if (colisT == true || colisCat == true) return false;
else return true;
}