Added replace current match functionality.

Author: austincondiff

Sources/CodeEditSourceEditor/Find/FindPanelDelegate.swift

@@ -17,6 +17,7 @@ protocol FindPanelDelegate: AnyObject {
     func findPanelDidUpdateReplaceText(_ text: String)
     func findPanelPrevButtonClicked()
     func findPanelNextButtonClicked()
+    func findPanelReplaceButtonClicked()
     func findPanelUpdateMatchCount(_ count: Int)
     func findPanelClearEmphasis()
 }

Sources/CodeEditSourceEditor/Find/FindViewController+FindPanelDelegate.swift

@@ -12,7 +12,6 @@ extension FindViewController: FindPanelDelegate {
     var findPanelMode: FindPanelMode { mode }
     var findPanelWrapAround: Bool { wrapAround }
     var findPanelMatchCase: Bool { matchCase }
-    var findPanelReplaceText: String { replaceText }
 
     func findPanelOnSubmit() {
         findPanelNextButtonClicked()
@@ -202,6 +201,11 @@ extension FindViewController: FindPanelDelegate {
         updateEmphasesForCurrentMatch(emphasisManager: emphasisManager)
     }
 
+    func findPanelReplaceButtonClicked() {
+        guard !findMatches.isEmpty else { return }
+        replaceCurrentMatch()
+    }
+
     func findPanelUpdateMatchCount(_ count: Int) {
         findPanel.updateMatchCount(count)
     }

Sources/CodeEditSourceEditor/Find/FindViewController+Operations.swift

@@ -53,6 +53,46 @@ extension FindViewController {
         currentFindMatchIndex = getNearestEmphasisIndex(matchRanges: findMatches) ?? 0
     }
 
+    func replaceCurrentMatch() {
+        guard let target = target,
+              !findMatches.isEmpty else { return }
+
+        // Get the current match range
+        let currentMatchRange = findMatches[currentFindMatchIndex]
+
+        // Set cursor positions to the match range
+        target.setCursorPositions([CursorPosition(range: currentMatchRange)])
+
+        // Replace the text using the cursor positions
+        if let textViewController = target as? TextViewController {
+            textViewController.textView.insertText(replaceText, replacementRange: currentMatchRange)
+        }
+
+        // Adjust the length of the replacement
+        let lengthDiff = replaceText.utf16.count - currentMatchRange.length
+
+        // Update the current match index
+        if findMatches.isEmpty {
+            currentFindMatchIndex = 0
+            findPanel.findDelegate?.findPanelUpdateMatchCount(0)
+        } else {
+            // Update all match ranges after the current match
+            for index in (currentFindMatchIndex + 1)..<findMatches.count {
+                findMatches[index].location += lengthDiff
+            }
+
+            // Remove the current match from the array
+            findMatches.remove(at: currentFindMatchIndex)
+
+            // Keep the current index in bounds
+            currentFindMatchIndex = min(currentFindMatchIndex, findMatches.count - 1)
+            findPanel.findDelegate?.findPanelUpdateMatchCount(findMatches.count)
+        }
+
+        // Update the emphases
+        addEmphases()
+    }
+
     func addEmphases() {
         guard let target = target,
               let emphasisManager = target.emphasisManager else { return }

Sources/CodeEditSourceEditor/Find/PanelView/FindPanelView.swift

@@ -133,13 +133,11 @@ struct FindPanelView: View {
                     }
                     HStack(spacing: 4) {
                         ControlGroup {
-                            Button(action: {
-                                // TODO: Replace action
-                            }, label: {
+                            Button(action: viewModel.replaceButtonClicked) {
                                 Text("Replace")
                                     .opacity(viewModel.findText.isEmpty || viewModel.matchCount == 0 ? 0.33 : 1)
                                     .frame(width: viewModel.findControlsWidth/2 - 12 - 0.5)
-                            })
+                            }
                             // TODO: disable if there is not an active match
                             .disabled(viewModel.findText.isEmpty || viewModel.matchCount == 0)
                             Divider()

Sources/CodeEditSourceEditor/Find/PanelView/FindPanelViewModel.swift

@@ -101,6 +101,10 @@ class FindPanelViewModel: ObservableObject {
         delegate?.findPanelNextButtonClicked()
     }
 
+    func replaceButtonClicked() {
+        delegate?.findPanelReplaceButtonClicked()
+    }
+
     func toggleWrapAround() {
         wrapAround.toggle()
         delegate?.findPanelDidUpdateWrapAround(wrapAround)