Added ability to query cell for given editor in GridView

Proton/Sources/Swift/Grid/View/GridView.swift

@@ -379,6 +379,13 @@ public class GridView: UIView {
     public func setColumnResizing(_ enabled: Bool) {
         isColumnResizingHandlesVisible = enabled
     }
+
+    /// Gets the cell for the `EditorView` contained in the current instance
+    /// - Parameter editor: Editor for which cell needs to be queried.
+    /// - Returns: `GridCell` that contains the passed in `EditorView`, if present
+    public func cellFor(_ editor: EditorView) -> GridCell? {
+        return cells.first(where: { $0.editor == editor })
+    }
 
     /// Determines if the collection of cells can be merged. For cells to be mergable, they need to
     /// be adjacent to each other, and the shape of selection needs to be rectangular.

Proton/Tests/Grid/GridViewTests.swift

@@ -168,4 +168,17 @@ class GridViewTests: XCTestCase {
         waitForExpectations(timeout: 1.0)
     }
 
+    func testGetsCellFromEditor() throws {
+        let gridView = GridView(config: config)
+        let delegate = MockGridViewDelegate()
+        gridView.delegate = delegate
+        gridView.gridView.willMove(toWindow: UIWindow())
+
+        let cellToQuery = try XCTUnwrap(gridView.cellAt(rowIndex: 1, columnIndex: 1))
+        let editorToQuery = try XCTUnwrap(cellToQuery.editor)
+
+        let cell = gridView.cellFor(editorToQuery)
+        XCTAssertEqual(cell, cellToQuery)
+    }
+
 }