WorksheetContextMenuManager_RequestEdgeCommandEnable
(
Object sender,
RequestEdgeCommandEnableEventArgs e
)
{
AssertValid();
// Get the edge corresponding to the row the user right-clicked in the
// edge worksheet. This can be null.
IEdge oClickedEdge =
WorksheetContextMenuManagerRowIDToEdge(e.EdgeRowID);
Boolean bEnableSelectAllEdges, bEnableDeselectAllEdges,
bEnableSelectAdjacentVertices, bEnableDeselectAdjacentVertices,
bEnableEditEdgeAttributes;
GetEdgeCommandEnableFlags(oClickedEdge,
out bEnableSelectAllEdges,
out bEnableDeselectAllEdges,
out bEnableSelectAdjacentVertices,
out bEnableDeselectAdjacentVertices,
out bEnableEditEdgeAttributes
);
e.EnableSelectAllEdges = bEnableSelectAllEdges;
e.EnableDeselectAllEdges = bEnableDeselectAllEdges;
e.EnableSelectAdjacentVertices = bEnableSelectAdjacentVertices;
e.EnableDeselectAdjacentVertices = bEnableDeselectAdjacentVertices;
}
AddEdgeContextMenuItems
(
Microsoft.Office.Interop.Excel.Range oClickedRange
)
{
Debug.Assert(oClickedRange != null);
AssertValid();
Int32 iClickedEdgeID;
CommandBarPopup oTopLevelPopup;
// Add a top-level NodeXL popup menu item.
PrepareToAddChildMenuItems(oClickedRange, m_oEdgeTable,
CommonTableColumnNames.ID, out iClickedEdgeID,
out oTopLevelPopup);
// Add child menu items.
CommandBarButton oSelectAllEdgesButton = AddContextMenuItem(
oTopLevelPopup, "Select &All Edges", iClickedEdgeID,
new _CommandBarButtonEvents_ClickEventHandler(
oSelectAllEdgesButton_Click) );
CommandBarButton oDeselectAllEdgesButton = AddContextMenuItem(
oTopLevelPopup, "&Deselect All Edges", iClickedEdgeID,
new _CommandBarButtonEvents_ClickEventHandler(
oDeselectAllEdgesButton_Click) );
CommandBarButton oSelectAdjacentVerticesOfEdgeButton =
AddContextMenuItem(oTopLevelPopup, "Select Ad&jacent Vertices",
iClickedEdgeID,
new _CommandBarButtonEvents_ClickEventHandler(
oSelectAdjacentVerticesOfEdgeButton_Click) );
CommandBarButton oDeselectAdjacentVerticesOfEdgeButton =
AddContextMenuItem(oTopLevelPopup, "Deselect Adjace&nt Vertices",
iClickedEdgeID,
new _CommandBarButtonEvents_ClickEventHandler(
oDeselectAdjacentVerticesOfEdgeButton_Click) );
// The custom menu items are disabled by default. To enable them, the
// RequestEdgeCommandEnable event must be handled.
RequestEdgeCommandEnableEventHandler oRequestEdgeCommandEnable =
this.RequestEdgeCommandEnable;
if (oRequestEdgeCommandEnable == null)
{
return;
}
RequestEdgeCommandEnableEventArgs oEventArgs =
new RequestEdgeCommandEnableEventArgs(iClickedEdgeID);
oRequestEdgeCommandEnable(this, oEventArgs);
oSelectAllEdgesButton.Enabled = oEventArgs.EnableSelectAllEdges;
oDeselectAllEdgesButton.Enabled = oEventArgs.EnableDeselectAllEdges;
oSelectAdjacentVerticesOfEdgeButton.Enabled =
oEventArgs.EnableSelectAdjacentVertices;
oDeselectAdjacentVerticesOfEdgeButton.Enabled =
oEventArgs.EnableDeselectAdjacentVertices;
// Add a "set color" menu item if the clicked range is a color cell.
AddSetColorContextMenuItem(m_oEdgeTable, oClickedRange,
EdgeTableColumnNames.Color,
EdgeTableColumnNames.LabelTextColor);
}
