Add "Copy or Paste" pointer action (#624)

This action allows the user to copy and paste with the same pointer
binding, e.g. right-click.

When the bound event occurs:
- If the window contains selected text, that text is copied to the
  clipboard and the selection is cleared.
- If the window does not contain selected text, the action will paste
  from the clipboard

Author: amendlik

sources/Browser/Core/iTermBrowserPointerActionPerformer.swift

@@ -161,4 +161,14 @@ class iTermBrowserPointerActionPerformer: NSObject, PointerControllerDelegate {
     func copyLinkAddress(with event: NSEvent) {
         delegate?.actionPerformingCopyLinkAddress(atPointInWindow: event.locationInWindow)
     }
+
+    func copyOrPaste(with event: NSEvent) {
+        Task {
+            if await delegate?.actionPerformingHasSelection() == true {
+                delegate?.actionPerformingCopyToClipboard()
+            } else if NSString.fromPasteboard()?.isEmpty == false {
+                delegate?.actionPerformingPasteFromClipboard()
+            }
+        }
+    }
 }

sources/PTYTextView.m

@@ -7656,6 +7656,15 @@ - (void)copyLinkAddressWithEvent:(NSEvent *)event {
     }
 }
 
+- (void)copyOrPasteWithEvent:(NSEvent *)event {
+    if ([self canCopy]) {
+        [self copySelectionAccordingToUserPreferences];
+        [self deselect];
+    } else {
+        [self paste:nil];
+    }
+}
+
 - (void)nextTabWithEvent:(NSEvent *)event {
     [_delegate textViewSelectNextTab];
 }

sources/PointerController.m

@@ -109,6 +109,8 @@ - (void)performAction:(NSString *)action
             NSString *title = parts[1];
             [delegate_ selectMenuItemWithIdentifier:identifier title:title event:event];
         }
+    } else if ([action isEqualToString:kCopyOrPastePointerAction]) {
+        [delegate_ copyOrPasteWithEvent:event];
     } else if ([action isEqualToString:kIgnoreAction]) {
         // Do nothing
     }

sources/PointerControllerDelegate.swift

@@ -114,4 +114,7 @@ protocol PointerControllerDelegate: AnyObject {
 
     @objc(copyLinkAddressWithEvent:)
     func copyLinkAddress(with event: NSEvent)
+
+    @objc(copyOrPasteWithEvent:)
+    func copyOrPaste(with event: NSEvent)
 }

sources/PointerPrefsController.h

@@ -40,6 +40,7 @@ extern NSString *kQuickLookAction;
 extern NSString *kIgnoreAction;
 extern NSString *kSelectMenuItemPointerAction;
 extern NSString *kCopyLinkAddressPointerAction;
+extern NSString *kCopyOrPastePointerAction;
 
 extern NSString *kThreeFingerClickGesture;
 extern NSString *kThreeFingerSwipeRight;

sources/PointerPrefsController.m

@@ -82,6 +82,7 @@
 NSString *kIgnoreAction = @"kIgnoreAction";
 NSString *kSelectMenuItemPointerAction = @"kSelectMenuItemPointerAction";
 NSString *kCopyLinkAddressPointerAction = @"kCopyLinkAddressPointerAction";
+NSString *kCopyOrPastePointerAction = @"kCopyOrPastePointerAction";
 
 typedef enum {
     kNoArg,
@@ -437,6 +438,7 @@ + (NSDictionary *)localizedActionMap
                            @"Copy Link Address", kCopyLinkAddressPointerAction,
                            @"Select Next Pane", kSelectNextPanePointerAction,
                            @"Select Previous Pane", kSelectPreviousPanePointerAction,
+                           @"Copy or Paste", kCopyOrPastePointerAction,
                            nil];
     return names;
 }