Add entry.Insert API to insert text at current cursor position

widget/entry.go

@@ -908,6 +908,53 @@ func (e *Entry) Unbind() {
 	e.binder.Unbind()
 }
 
+// InsertAtCursor inserts the given text into the Entry at the current cursor position.
+// If text is currently selected, the selected text will be replaced
+// with the inserted content.
+//
+// Since: 2.6
+func (e *Entry) InsertAtCursor(text string) {
+	if text == "" {
+		changed := e.selecting && e.eraseSelection()
+
+		if changed {
+			e.Refresh()
+		}
+
+		return // Nothing to paste into the text content.
+	}
+
+	if !e.MultiLine {
+		// format clipboard content to be compatible with single line entry
+		text = strings.Replace(text, "\n", " ", -1)
+	}
+
+	if e.selecting {
+		e.eraseSelection()
+	}
+
+	runes := []rune(text)
+	pos := e.cursorTextPos()
+	provider := e.textProvider()
+	provider.insertAt(pos, runes)
+
+	e.undoStack.Add(&entryModifyAction{
+		Position: pos,
+		Text:     runes,
+	})
+	content := provider.String()
+	e.updateText(content, false)
+	e.CursorRow, e.CursorColumn = e.rowColFromTextPos(pos + len(runes))
+	cb := e.OnChanged
+
+	e.validate()
+	if cb != nil {
+		cb(content) // We know that the text has changed.
+	}
+
+	e.Refresh() // placing the cursor (and refreshing) happens last}
+}
+
 // copyToClipboard copies the current selection to a given clipboard.
 // This does nothing if it is a concealed entry.
 func (e *Entry) copyToClipboard(clipboard fyne.Clipboard) {
@@ -1014,46 +1061,7 @@ func (e *Entry) getRowCol(p fyne.Position) (int, int) {
 // pasteFromClipboard inserts text from the clipboard content,
 // starting from the cursor position.
 func (e *Entry) pasteFromClipboard(clipboard fyne.Clipboard) {
-	text := clipboard.Content()
-	if text == "" {
-		changed := e.selecting && e.eraseSelection()
-
-		if changed {
-			e.Refresh()
-		}
-
-		return // Nothing to paste into the text content.
-	}
-
-	if !e.MultiLine {
-		// format clipboard content to be compatible with single line entry
-		text = strings.Replace(text, "\n", " ", -1)
-	}
-
-	if e.selecting {
-		e.eraseSelection()
-	}
-
-	runes := []rune(text)
-	pos := e.cursorTextPos()
-	provider := e.textProvider()
-	provider.insertAt(pos, runes)
-
-	e.undoStack.Add(&entryModifyAction{
-		Position: pos,
-		Text:     runes,
-	})
-	content := provider.String()
-	e.updateText(content, false)
-	e.CursorRow, e.CursorColumn = e.rowColFromTextPos(pos + len(runes))
-	cb := e.OnChanged
-
-	e.validate()
-	if cb != nil {
-		cb(content) // We know that the text has changed.
-	}
-
-	e.Refresh() // placing the cursor (and refreshing) happens last
+	e.InsertAtCursor(clipboard.Content())
 }
 
 // placeholderProvider returns the placeholder text handler for this entry

widget/entry_test.go

@@ -946,6 +946,82 @@ func TestEntry_OnPaste(t *testing.T) {
 	}
 }
 
+func TestEntry_InsertAtCursor(t *testing.T) {
+	tests := []struct {
+		name             string
+		entry            *widget.Entry
+		insertText       string
+		wantText         string
+		wantRow, wantCol int
+	}{
+		{
+			name:       "singleline: empty content",
+			entry:      widget.NewEntry(),
+			insertText: "",
+			wantText:   "",
+			wantRow:    0,
+			wantCol:    0,
+		},
+		{
+			name:       "singleline: simple text",
+			entry:      widget.NewEntry(),
+			insertText: "clipboard content",
+			wantText:   "clipboard content",
+			wantRow:    0,
+			wantCol:    17,
+		},
+		{
+			name:       "singleline: UTF8 text",
+			entry:      widget.NewEntry(),
+			insertText: "Hié™שרה",
+			wantText:   "Hié™שרה",
+			wantRow:    0,
+			wantCol:    7,
+		},
+		{
+			name:       "singleline: with new line",
+			entry:      widget.NewEntry(),
+			insertText: "clipboard\ncontent",
+			wantText:   "clipboard content",
+			wantRow:    0,
+			wantCol:    17,
+		},
+		{
+			name:       "singleline: with tab",
+			entry:      widget.NewEntry(),
+			insertText: "clipboard\tcontent",
+			wantText:   "clipboard\tcontent",
+			wantRow:    0,
+			wantCol:    17,
+		},
+		{
+			name:       "password: with new line",
+			entry:      widget.NewPasswordEntry(),
+			insertText: "3SB=y+)z\nkHGK(hx6 -e_\"1TZu q^bF3^$u H[:e\"1O.",
+			wantText:   `3SB=y+)z kHGK(hx6 -e_"1TZu q^bF3^$u H[:e"1O.`,
+			wantRow:    0,
+			wantCol:    44,
+		},
+		{
+			name:       "multiline: with new line",
+			entry:      widget.NewMultiLineEntry(),
+			insertText: "clipboard\ncontent",
+			wantText:   "clipboard\ncontent",
+			wantRow:    1,
+			wantCol:    7,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			tt.entry.InsertAtCursor(tt.insertText)
+			assert.Equal(t, tt.wantText, tt.entry.Text)
+			assert.Equal(t, tt.wantRow, tt.entry.CursorRow)
+			assert.Equal(t, tt.wantCol, tt.entry.CursorColumn)
+		})
+	}
+}
+
 func TestEntry_PageUpDown(t *testing.T) {
 	t.Run("single line", func(*testing.T) {
 		e, window := setupImageTest(t, false)