internal void OnDataGridViewElementStateChanging(DataGridViewElement element, int index, DataGridViewElementStates elementState)
{
DataGridViewColumn dataGridViewColumn = element as DataGridViewColumn;
if (dataGridViewColumn != null)
{
// column.Frozen | .Visible | .ReadOnly changing
switch (elementState)
{
case DataGridViewElementStates.Frozen:
case DataGridViewElementStates.Visible:
if (elementState == DataGridViewElementStates.Visible)
{
if (!dataGridViewColumn.Visible &&
dataGridViewColumn.InheritedAutoSizeMode == DataGridViewAutoSizeColumnMode.ColumnHeader &&
!this.ColumnHeadersVisible)
{
throw new InvalidOperationException(SR.GetString(SR.DataGridView_CannotMakeAutoSizedColumnVisible));
}
else if (!dataGridViewColumn.Visible &&
dataGridViewColumn.Frozen &&
dataGridViewColumn.InheritedAutoSizeMode == DataGridViewAutoSizeColumnMode.Fill)
{
// alternative: throw new InvalidOperationException(SR.GetString(SR.DataGridView_CannotMakeAutoFillColumnVisible));
// DataGridView_CannotMakeAutoFillColumnVisible=The column cannot be made visible because its autosizing mode is Fill and it is frozen.
// Removing the Fill auto size mode when frozen column becomes visible (instead of throwing an exception)
dataGridViewColumn.AutoSizeMode = DataGridViewAutoSizeColumnMode.None;
}
else if (dataGridViewColumn.Visible && this.ptCurrentCell.X == dataGridViewColumn.Index)
{
// Column of the current cell is made invisible. Trying to reset the current cell. May throw an exception.
ResetCurrentCell();
// [....]: Should the current cell be set to some cell after the operation?
}
}
if (elementState == DataGridViewElementStates.Frozen &&
!dataGridViewColumn.Frozen &&
dataGridViewColumn.Visible &&
dataGridViewColumn.InheritedAutoSizeMode == DataGridViewAutoSizeColumnMode.Fill)
{
// Removing the Fill auto size mode when visible column becomes frozen (instead of throwing an exception)
dataGridViewColumn.AutoSizeMode = DataGridViewAutoSizeColumnMode.None;
}
CorrectColumnFrozenStates(dataGridViewColumn, elementState == DataGridViewElementStates.Frozen);
break;
case DataGridViewElementStates.ReadOnly:
if (this.ptCurrentCell.X == dataGridViewColumn.Index &&
this.IsCurrentCellInEditMode &&
!dataGridViewColumn.ReadOnly &&
!this.dataGridViewOper[DATAGRIDVIEWOPER_inReadOnlyChange])
{
Debug.Assert(!this.ReadOnly);
// Column becomes read-only. Exit editing mode.
if (!EndEdit(DataGridViewDataErrorContexts.Parsing | DataGridViewDataErrorContexts.Commit,
DataGridViewValidateCellInternal.Always /*validateCell*/,
false /*fireCellLeave*/,
false /*fireCellEnter*/,
false /*fireRowLeave*/,
false /*fireRowEnter*/,
false /*fireLeave*/,
true /*keepFocus*/,
false /*resetCurrentCell*/,
false /*resetAnchorCell*/))
{
throw new InvalidOperationException(SR.GetString(SR.DataGridView_CommitFailedCannotCompleteOperation));
}
}
break;
default:
Debug.Fail("Unexpected DataGridViewElementStates param in DataGridView.OnDataGridViewElementStateChanging");
break;
}
}
else
{
DataGridViewRow dataGridViewRow = element as DataGridViewRow;
if (dataGridViewRow != null)
{
// row.Frozen | .Visible | .ReadOnly changing
int rowIndex = ((dataGridViewRow.Index > -1) ? dataGridViewRow.Index : index);
switch (elementState)
{
case DataGridViewElementStates.Frozen:
case DataGridViewElementStates.Visible:
if (elementState == DataGridViewElementStates.Visible && this.ptCurrentCell.Y == rowIndex)
{
Debug.Assert((this.Rows.GetRowState(rowIndex) & DataGridViewElementStates.Visible) != 0);
// Row of the current cell is made invisible.
if (this.DataSource != null)
{
Debug.Assert(this.dataConnection != null);
Debug.Assert(this.dataConnection.CurrencyManager != null);
Debug.Assert(this.dataConnection.CurrencyManager.Position == this.ptCurrentCell.Y);
// the row associated with the currency manager's position cannot be made invisble.
throw new InvalidOperationException(SR.GetString(SR.DataGridView_CurrencyManagerRowCannotBeInvisible));
}
// Trying to reset the current cell. May throw an exception.
ResetCurrentCell();
// [....]: Should the current cell be set to some cell after the operation?
}
CorrectRowFrozenStates(dataGridViewRow, rowIndex, elementState == DataGridViewElementStates.Frozen);
break;
case DataGridViewElementStates.ReadOnly:
if (this.ptCurrentCell.Y == rowIndex &&
(this.Rows.GetRowState(rowIndex) & DataGridViewElementStates.ReadOnly) == 0 &&
!this.ReadOnly &&
this.IsCurrentCellInEditMode &&
!this.dataGridViewOper[DATAGRIDVIEWOPER_inReadOnlyChange])
{
// Row becomes read-only. Exit editing mode.
if (!EndEdit(DataGridViewDataErrorContexts.Parsing | DataGridViewDataErrorContexts.Commit,
DataGridViewValidateCellInternal.Always /*validateCell*/,
false /*fireCellLeave*/,
false /*fireCellEnter*/,
false /*fireRowLeave*/,
false /*fireRowEnter*/,
false /*fireLeave*/,
true /*keepFocus*/,
false /*resetCurrentCell*/,
false /*resetAnchorCell*/))
{
throw new InvalidOperationException(SR.GetString(SR.DataGridView_CommitFailedCannotCompleteOperation));
}
}
break;
default:
Debug.Fail("Unexpected DataGridViewElementStates param in DataGridView.OnDataGridViewElementStateChanging");
break;
}
}
else
{
DataGridViewCell dataGridViewCell = element as DataGridViewCell;
if (dataGridViewCell != null)
{
// cell.ReadOnly changing
switch (elementState)
{
case DataGridViewElementStates.ReadOnly:
if (this.ptCurrentCell.X == dataGridViewCell.ColumnIndex &&
this.ptCurrentCell.Y == dataGridViewCell.RowIndex &&
this.IsCurrentCellInEditMode &&
!dataGridViewCell.ReadOnly &&
!this.dataGridViewOper[DATAGRIDVIEWOPER_inReadOnlyChange])
{
Debug.Assert(!this.Columns[dataGridViewCell.ColumnIndex].ReadOnly);
Debug.Assert(!this.Rows[dataGridViewCell.RowIndex].ReadOnly);
Debug.Assert(!this.ReadOnly);
// Current cell becomes read-only. Exit editing mode.
if (!EndEdit(DataGridViewDataErrorContexts.Parsing | DataGridViewDataErrorContexts.Commit,
DataGridViewValidateCellInternal.Always /*validateCell*/,
false /*fireCellLeave*/,
false /*fireCellEnter*/,
false /*fireRowLeave*/,
false /*fireRowEnter*/,
false /*fireLeave*/,
true /*keepFocus*/,
false /*resetCurrentCell*/,
false /*resetAnchorCell*/))
{
throw new InvalidOperationException(SR.GetString(SR.DataGridView_CommitFailedCannotCompleteOperation));
}
}
break;
default:
Debug.Fail("Unexpected DataGridViewElementStates param in DataGridView.OnDataGridViewElementStateChanging");
break;
}
}
else
{
Debug.Fail("Unexpected DataGridViewElement type in DataGridView.OnDataGridViewElementStateChanging");
}
}
}
}
internal DataGridViewElement(DataGridViewElement dgveTemplate)
{
// Selected and Displayed states are not inherited
_state = dgveTemplate.State & (DataGridViewElementStates.Frozen | DataGridViewElementStates.ReadOnly | DataGridViewElementStates.Resizable | DataGridViewElementStates.ResizableSet | DataGridViewElementStates.Visible);
}
internal DataGridViewElement(DataGridViewElement dgveTemplate)
{
this.state = dgveTemplate.State & (DataGridViewElementStates.Visible | DataGridViewElementStates.ResizableSet | DataGridViewElementStates.Resizable | DataGridViewElementStates.ReadOnly | DataGridViewElementStates.Frozen);
}
internal void OnDataGridViewElementStateChanged(DataGridViewElement element, int index, DataGridViewElementStates elementState)
{
DataGridViewColumn dataGridViewColumn = element as DataGridViewColumn;
if (dataGridViewColumn != null)
{
DataGridViewColumnStateChangedEventArgs dgvcsce = new DataGridViewColumnStateChangedEventArgs(dataGridViewColumn, elementState);
OnColumnStateChanged(dgvcsce);
}
else
{
DataGridViewRow dataGridViewRow = element as DataGridViewRow;
if (dataGridViewRow != null)
{
DataGridViewRowStateChangedEventHandler eh = this.Events[EVENT_DATAGRIDVIEWROWSTATECHANGED] as DataGridViewRowStateChangedEventHandler;
if (eh != null && dataGridViewRow.DataGridView != null && dataGridViewRow.Index == -1)
{
dataGridViewRow = this.Rows[index];
}
DataGridViewRowStateChangedEventArgs dgvrsce = new DataGridViewRowStateChangedEventArgs(dataGridViewRow, elementState);
OnRowStateChanged(dataGridViewRow.Index == -1 ? index : dataGridViewRow.Index, dgvrsce);
}
else
{
DataGridViewCell dataGridViewCell = element as DataGridViewCell;
if (dataGridViewCell != null)
{
DataGridViewCellStateChangedEventArgs dgvcsce = new DataGridViewCellStateChangedEventArgs(dataGridViewCell, elementState);
OnCellStateChanged(dgvcsce);
}
}
}
if ((elementState & DataGridViewElementStates.Selected) == DataGridViewElementStates.Selected)
{
if (this.noSelectionChangeCount > 0)
{
this.dataGridViewState2[DATAGRIDVIEWSTATE2_raiseSelectionChanged] = true;
}
else
{
OnSelectionChanged(EventArgs.Empty);
}
}
}
internal DataGridViewElement(DataGridViewElement dgveTemplate)
{
this.state = dgveTemplate.State & (DataGridViewElementStates.Visible | DataGridViewElementStates.ResizableSet | DataGridViewElementStates.Resizable | DataGridViewElementStates.ReadOnly | DataGridViewElementStates.Frozen);
}
public void TestDefaultValues () {
DataGridViewElement element = new DataGridViewElement();
Assert.AreEqual (null, element.DataGridView, "#A1");
}
internal DataGridViewElement(DataGridViewElement dgveTemplate)
{
// Selected and Displayed states are not inherited
this.state = dgveTemplate.State & (DataGridViewElementStates.Frozen | DataGridViewElementStates.ReadOnly | DataGridViewElementStates.Resizable | DataGridViewElementStates.ResizableSet | DataGridViewElementStates.Visible);
}
internal void OnDataGridViewElementStateChanging(DataGridViewElement element, int index, DataGridViewElementStates elementState)
{
DataGridViewColumn dataGridViewColumn = element as DataGridViewColumn;
if (dataGridViewColumn != null)
{
switch (elementState)
{
case DataGridViewElementStates.Frozen:
case DataGridViewElementStates.Visible:
if (elementState == DataGridViewElementStates.Visible)
{
if ((!dataGridViewColumn.Visible && (dataGridViewColumn.InheritedAutoSizeMode == DataGridViewAutoSizeColumnMode.ColumnHeader)) && !this.ColumnHeadersVisible)
{
throw new InvalidOperationException(System.Windows.Forms.SR.GetString("DataGridView_CannotMakeAutoSizedColumnVisible"));
}
if ((!dataGridViewColumn.Visible && dataGridViewColumn.Frozen) && (dataGridViewColumn.InheritedAutoSizeMode == DataGridViewAutoSizeColumnMode.Fill))
{
dataGridViewColumn.AutoSizeMode = DataGridViewAutoSizeColumnMode.None;
}
else if (dataGridViewColumn.Visible && (this.ptCurrentCell.X == dataGridViewColumn.Index))
{
this.ResetCurrentCell();
}
}
if (((elementState == DataGridViewElementStates.Frozen) && !dataGridViewColumn.Frozen) && (dataGridViewColumn.Visible && (dataGridViewColumn.InheritedAutoSizeMode == DataGridViewAutoSizeColumnMode.Fill)))
{
dataGridViewColumn.AutoSizeMode = DataGridViewAutoSizeColumnMode.None;
}
this.CorrectColumnFrozenStates(dataGridViewColumn, elementState == DataGridViewElementStates.Frozen);
return;
case (DataGridViewElementStates.Frozen | DataGridViewElementStates.Displayed):
return;
case DataGridViewElementStates.ReadOnly:
if ((((this.ptCurrentCell.X == dataGridViewColumn.Index) && this.IsCurrentCellInEditMode) && (!dataGridViewColumn.ReadOnly && !this.dataGridViewOper[0x4000])) && !this.EndEdit(DataGridViewDataErrorContexts.Commit | DataGridViewDataErrorContexts.Parsing, DataGridViewValidateCellInternal.Always, false, false, false, false, false, true, false, false))
{
throw new InvalidOperationException(System.Windows.Forms.SR.GetString("DataGridView_CommitFailedCannotCompleteOperation"));
}
return;
}
}
else
{
DataGridViewRow dataGridViewRow = element as DataGridViewRow;
if (dataGridViewRow != null)
{
int rowIndex = (dataGridViewRow.Index > -1) ? dataGridViewRow.Index : index;
switch (elementState)
{
case DataGridViewElementStates.Frozen:
case DataGridViewElementStates.Visible:
if ((elementState == DataGridViewElementStates.Visible) && (this.ptCurrentCell.Y == rowIndex))
{
if (this.DataSource != null)
{
throw new InvalidOperationException(System.Windows.Forms.SR.GetString("DataGridView_CurrencyManagerRowCannotBeInvisible"));
}
this.ResetCurrentCell();
}
this.CorrectRowFrozenStates(dataGridViewRow, rowIndex, elementState == DataGridViewElementStates.Frozen);
return;
case (DataGridViewElementStates.Frozen | DataGridViewElementStates.Displayed):
return;
case DataGridViewElementStates.ReadOnly:
if ((((this.ptCurrentCell.Y == rowIndex) && ((this.Rows.GetRowState(rowIndex) & DataGridViewElementStates.ReadOnly) == DataGridViewElementStates.None)) && (!this.ReadOnly && this.IsCurrentCellInEditMode)) && (!this.dataGridViewOper[0x4000] && !this.EndEdit(DataGridViewDataErrorContexts.Commit | DataGridViewDataErrorContexts.Parsing, DataGridViewValidateCellInternal.Always, false, false, false, false, false, true, false, false)))
{
throw new InvalidOperationException(System.Windows.Forms.SR.GetString("DataGridView_CommitFailedCannotCompleteOperation"));
}
return;
}
}
else
{
DataGridViewCell cell = element as DataGridViewCell;
if (cell != null)
{
DataGridViewElementStates states3 = elementState;
if ((states3 == DataGridViewElementStates.ReadOnly) && ((((this.ptCurrentCell.X == cell.ColumnIndex) && (this.ptCurrentCell.Y == cell.RowIndex)) && (this.IsCurrentCellInEditMode && !cell.ReadOnly)) && (!this.dataGridViewOper[0x4000] && !this.EndEdit(DataGridViewDataErrorContexts.Commit | DataGridViewDataErrorContexts.Parsing, DataGridViewValidateCellInternal.Always, false, false, false, false, false, true, false, false))))
{
throw new InvalidOperationException(System.Windows.Forms.SR.GetString("DataGridView_CommitFailedCannotCompleteOperation"));
}
}
}
}
}
internal void OnDataGridViewElementStateChanged(DataGridViewElement element, int index, DataGridViewElementStates elementState)
{
DataGridViewColumn dataGridViewColumn = element as DataGridViewColumn;
if (dataGridViewColumn != null)
{
DataGridViewColumnStateChangedEventArgs e = new DataGridViewColumnStateChangedEventArgs(dataGridViewColumn, elementState);
this.OnColumnStateChanged(e);
}
else
{
DataGridViewRow dataGridViewRow = element as DataGridViewRow;
if (dataGridViewRow != null)
{
if (((base.Events[EVENT_DATAGRIDVIEWROWSTATECHANGED] is DataGridViewRowStateChangedEventHandler) && (dataGridViewRow.DataGridView != null)) && (dataGridViewRow.Index == -1))
{
dataGridViewRow = this.Rows[index];
}
DataGridViewRowStateChangedEventArgs args2 = new DataGridViewRowStateChangedEventArgs(dataGridViewRow, elementState);
this.OnRowStateChanged((dataGridViewRow.Index == -1) ? index : dataGridViewRow.Index, args2);
}
else
{
DataGridViewCell dataGridViewCell = element as DataGridViewCell;
if (dataGridViewCell != null)
{
DataGridViewCellStateChangedEventArgs args3 = new DataGridViewCellStateChangedEventArgs(dataGridViewCell, elementState);
this.OnCellStateChanged(args3);
}
}
}
if ((elementState & DataGridViewElementStates.Selected) == DataGridViewElementStates.Selected)
{
if (this.noSelectionChangeCount > 0)
{
this.dataGridViewState2[0x40000] = true;
}
else
{
this.OnSelectionChanged(EventArgs.Empty);
}
}
}