IContextMenuItem Interface
An item of the built-in context menu in the Rich Text Editor.
Namespace: DevExpress.Blazor.Office
Assembly: DevExpress.Blazor.v25.1.dll
NuGet Package: DevExpress.Blazor
Declaration
public interface IContextMenuItemRelated API Members
The following members return IContextMenuItem objects:
Remarks
The IContextMenuItem interface defines an item in the built-in context menu. Use interface properties to specify the item’s availability, appearance, and behavior.
The following code snippet customizes context menu items:
<DxRichEdit CustomizeContextMenu=OnCustomizeContextMenu />
@code {
DxPopup popup;
Selection selection;
string textToSearch;
string link;
// ...
async Task OnCustomizeContextMenu(IContextMenuItemCollection items) {
if (selection.Intervals[0].Length > 0) {
var span = await selection.ActiveSubDocument.GetTextSpanAsync(selection.Intervals[0]);
textToSearch = span.Text.Trim();
}
else
textToSearch = null;
var searchItem = items.AddCustomItem(0, "Google Search...", async () => {
var url = $"https://www.google.com/search?q={HttpUtility.UrlEncode(textToSearch)}";
await JSRuntime.InvokeVoidAsync("open", url, "_blank");
});
searchItem.Enabled = !string.IsNullOrEmpty(textToSearch);
searchItem.IconCssClass = "search-icon";
var hyperlinks = await selection.ActiveSubDocument.Hyperlinks.GetAllAsync();
var hyperlink = hyperlinks.SingleOrDefault(h => Enumerable.Range(h.Interval.Start, h.Interval.Length).Contains(selection.CaretPosition));
link = hyperlink?.Url;
if (!string.IsNullOrEmpty(link)) {
var openHyperlinkItem = items[RichEditContextMenuItemNames.OpenHyperlink];
openHyperlinkItem.BeginGroup = false;
var index = items.IndexOf(openHyperlinkItem);
var showURLItem = items.AddCustomItem(index, "Show URL");
showURLItem.Click = async () => {
if (popup is not null)
await popup.ShowAsync();
};
showURLItem.BeginGroup = true;
}
items.Remove(RichEditContextMenuItemNames.CutSelection);
items.Remove(RichEditContextMenuItemNames.CopySelection);
items.Remove(RichEditContextMenuItemNames.Paste);
var clipboardItem = items.AddCustomItem(1, "Clipboard");
clipboardItem.BeginGroup = true;
clipboardItem.Items.Add(RichEditContextMenuItemNames.CutSelection);
clipboardItem.Items.Add(RichEditContextMenuItemNames.CopySelection);
clipboardItem.Items.Add(RichEditContextMenuItemNames.Paste);
}
}
See Also