panesync toggle <- panesync commit

README.md

@@ -78,6 +78,9 @@ After that, a bare `jprototerm` connects to the daemon and opens a window in the
 directory. If no daemon is running, `jprototerm` falls back to a standalone in-process window
 (today's behavior), so it always works.
 
+For development testing, use `jprototerm --standalone` to skip the daemon even when one is
+running.
+
 To start the daemon automatically with your graphical session, enable the bundled **user**
 service (it's a user service, not a system one, because X11 needs a display — which only
 exists after you log in):
@@ -146,6 +149,9 @@ enabled = true
 [scrollback]
 editor_command = "vi {file}"
 
+[worktree]
+relative_worktree_path = "./.worktrees"
+
 [env.override]
 ZELLIJ_SESSION_NAME = ""
 
@@ -163,6 +169,10 @@ previous_tab = "ALT+SHIFT+H"
 next_tab = "ALT+SHIFT+L"
 open_font_selector = "ALT+T"
 open_scrollback = "ALT+S"
+create_worktree = "ALT+W"
+pane_sync_toggle = "ALT+Y"
+pane_sync_select = "SPACE"
+paste = "CTRL+SHIFT+V"
 ```
 
 ## Defaults
@@ -178,6 +188,12 @@ open_scrollback = "ALT+S"
 - `Alt+Shift+h` / `Alt+Shift+l`: previous / next tab
 - `Alt+t`: open the font selector
 - `Alt+s`: open the active pane scrollback in `$EDITOR`
+- `Alt+w`: edit a worktree name, then run `git worktree add <relative_worktree_path>/<name>`
+  from the previously focused pane's working directory
+- `Alt+y`: enter pane-sync selection mode, commit the selection, or stop an active pane sync
+- `Space`: toggle the focused pane in the sync set while pane-sync selection mode is active
+- Once committed, input typed or pasted into any synced pane is mirrored to the other synced panes
+- `Ctrl+Shift+v`: paste
 - Font default: `JetBrainsMono Nerd Font`
 - Kitty graphics protocol parsing is enabled by default
 

config.example.toml

@@ -19,6 +19,9 @@ enabled = true
 [scrollback]
 editor_command = "vi {file}"
 
+[worktree]
+relative_worktree_path = "./.worktrees"
+
 [env.override]
 ZELLIJ_SESSION_NAME = ""
 
@@ -28,9 +31,16 @@ navigate_down = "ALT+J"
 navigate_up = "ALT+K"
 navigate_right = "ALT+L"
 toggle_floating = "ALT+F"
-new_floating = "ALT+SHIFT+F"
+new_pane = "ALT+N"
 next_floating = "ALT+F12"
+promote_floating = "ALT+P"
 close_pane = "ALT+X"
+new_tab = "ALT+A"
+previous_tab = "ALT+SHIFT+H"
+next_tab = "ALT+SHIFT+L"
 open_font_selector = "ALT+T"
 open_scrollback = "ALT+S"
+create_worktree = "ALT+W"
+pane_sync_toggle = "ALT+Y"
+pane_sync_select = "SPACE"
 paste = "CTRL+SHIFT+V"

src/main/java/com/gregor/jprototerm/AppConfig.java

@@ -29,6 +29,7 @@ public record AppConfig(
         double windowHeight,
         boolean kittyGraphics,
         String scrollbackEditorCommand,
+        String worktreeRelativePath,
         String closeSignal,
         Map<String, String> envOverride,
         Map<String, KeyBinding> keybindings
@@ -48,6 +49,9 @@ public record AppConfig(
             "next_tab",
             "open_font_selector",
             "open_scrollback",
+            "create_worktree",
+            "pane_sync_toggle",
+            "pane_sync_select",
             "paste"
     );
 
@@ -72,6 +76,7 @@ public record AppConfig(
                     doubleValue(document, "window.height", defaults.windowHeight),
                     booleanValue(document, "kitty_graphics.enabled", defaults.kittyGraphics),
                     stringValue(document, "scrollback.editor_command", defaults.scrollbackEditorCommand),
+                    stringValue(document, "worktree.relative_worktree_path", defaults.worktreeRelativePath),
                     closeSignalValue(document, defaults.closeSignal),
                     envOverride(document, defaults.envOverride),
                     keybindings(document, defaults)
@@ -94,6 +99,7 @@ public record AppConfig(
                 760.0,
                 true,
                 defaultScrollbackEditorCommand(),
+                "./.worktrees",
                 "SIGTERM",
                 Map.of(),
                 Map.ofEntries(
@@ -111,6 +117,9 @@ public record AppConfig(
                         Map.entry("next_tab", KeyBinding.parse("ALT+SHIFT+L")),
                         Map.entry("open_font_selector", KeyBinding.parse("ALT+T")),
                         Map.entry("open_scrollback", KeyBinding.parse("ALT+S")),
+                        Map.entry("create_worktree", KeyBinding.parse("ALT+W")),
+                        Map.entry("pane_sync_toggle", KeyBinding.parse("ALT+Y")),
+                        Map.entry("pane_sync_select", KeyBinding.parse("SPACE")),
                         Map.entry("paste", KeyBinding.parse("CTRL+SHIFT+V"))
                 )
         );
@@ -128,6 +137,7 @@ public record AppConfig(
                 windowHeight,
                 kittyGraphics,
                 scrollbackEditorCommand,
+                worktreeRelativePath,
                 closeSignal,
                 envOverride,
                 keybindings
@@ -230,6 +240,8 @@ public record AppConfig(
         builder.append("enabled = ").append(kittyGraphics).append("\n\n");
         builder.append("[scrollback]\n");
         builder.append("editor_command = ").append(quoted(scrollbackEditorCommand)).append("\n\n");
+        builder.append("[worktree]\n");
+        builder.append("relative_worktree_path = ").append(quoted(worktreeRelativePath)).append("\n\n");
         builder.append("[env.override]\n");
         for (Map.Entry<String, String> entry : envOverride.entrySet()) {
             builder.append(entry.getKey()).append(" = ").append(quoted(entry.getValue())).append('\n');

src/main/java/com/gregor/jprototerm/Compositor.java

@@ -20,6 +20,7 @@ import javafx.scene.text.TextAlignment;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
@@ -37,6 +38,8 @@ public final class Compositor {
     // Canvas background shown wherever no pane covers (gaps). Painted on a full recomposite.
     private static final Color GAP_BACKGROUND = Color.rgb(16, 16, 18);
     private static final Color TAB_TEXT = Color.rgb(225, 229, 235);
+    private static final Color PANE_SYNC_SELECT_BORDER = Color.rgb(255, 183, 77);
+    private static final Color PANE_SYNC_COMMITTED_BORDER = Color.rgb(105, 214, 128);
     // Thin tab strip shown at the top when more than one tab is open.
     private static final double TAB_BAR_HEIGHT = 22.0;
 
@@ -62,6 +65,9 @@ public final class Compositor {
     private final Map<TerminalPane, Long> hiddenSince = new HashMap<>();
     // Panes whose backbuffer is currently released, so we don't release again every frame.
     private final Set<TerminalPane> released = new HashSet<>();
+    private final Set<TerminalPane> paneSyncSelection = new LinkedHashSet<>();
+    private final Set<TerminalPane> paneSyncPanes = new LinkedHashSet<>();
+    private boolean paneSyncSelectMode;
     // layoutVersion at the last sweep: lets an idle, all-released steady state skip the scan.
     private long lastSweepLayoutVersion = Long.MIN_VALUE;
     // Cheap per-frame dirty signal: skip the whole render when none of these changed.
@@ -134,6 +140,54 @@ public final class Compositor {
         }
     }
 
+    public boolean isPaneSyncSelecting() {
+        return paneSyncSelectMode;
+    }
+
+    public void togglePaneSync() {
+        if (paneSyncSelectMode) {
+            paneSyncPanes.clear();
+            paneSyncPanes.addAll(paneSyncSelection);
+            paneSyncSelectMode = false;
+            paneSyncSelection.clear();
+            prunePaneSyncState();
+            layoutVersion++;
+            return;
+        }
+        if (!paneSyncPanes.isEmpty()) {
+            paneSyncPanes.clear();
+            layoutVersion++;
+            return;
+        }
+        if (activePane() == null) {
+            return;
+        }
+        paneSyncSelectMode = true;
+        paneSyncSelection.clear();
+        layoutVersion++;
+    }
+
+    public void togglePaneSyncSelection() {
+        TerminalPane active = activePane();
+        if (active == null || !paneSyncSelectMode) {
+            return;
+        }
+        if (!paneSyncSelection.add(active)) {
+            paneSyncSelection.remove(active);
+        }
+        layoutVersion++;
+    }
+
+    public List<TerminalPane> paneSyncPeers(TerminalPane source) {
+        prunePaneSyncState();
+        if (source == null || !paneSyncPanes.contains(source)) {
+            return List.of();
+        }
+        return paneSyncPanes.stream()
+                .filter(pane -> pane != source)
+                .toList();
+    }
+
     public void toggleFloating() {
         mutateCurrentTab(() -> currentTab().toggleFloating());
     }
@@ -190,6 +244,7 @@ public final class Compositor {
         for (int i = 0; i < tabs.size(); i++) {
             Tab tab = tabs.get(i);
             if (tab.closePane(pane)) {
+                removePaneFromSyncState(pane);
                 if (tab.isEmpty()) {
                     // Closing a tab's last pane closes the tab. Keep currentTabIndex pointing at the
                     // same tab (or clamp it when the current/last tab went away).
@@ -238,6 +293,9 @@ public final class Compositor {
             tab.close();
         }
         tabs.clear();
+        paneSyncSelectMode = false;
+        paneSyncSelection.clear();
+        paneSyncPanes.clear();
     }
 
     /**
@@ -377,6 +435,7 @@ public final class Compositor {
         for (TerminalPane pane : panes) {
             paneContentVersion.put(pane, pane.paintFull(gc, isActive(pane)));
         }
+        drawPaneSyncOverlay(gc, panes);
         imageOverlay.sync(panes);
     }
 
@@ -396,6 +455,7 @@ public final class Compositor {
             paneContentVersion.put(pane, pane.paintIncremental(gc, isActive(pane)));
             imageOverlay.updatePane(pane);
         }
+        drawPaneSyncOverlay(gc, panes);
     }
 
     private GraphicsContext beginFrame() {
@@ -431,6 +491,63 @@ public final class Compositor {
         gc.setFontSmoothingType(FontSmoothingType.LCD);
     }
 
+    private void drawPaneSyncOverlay(GraphicsContext gc, List<TerminalPane> panes) {
+        Set<TerminalPane> highlighted = paneSyncSelectMode ? paneSyncSelection : paneSyncPanes;
+        if (highlighted.isEmpty()) {
+            return;
+        }
+
+        gc.save();
+        try {
+            gc.setLineWidth(4.0);
+            gc.setStroke(paneSyncSelectMode ? PANE_SYNC_SELECT_BORDER : PANE_SYNC_COMMITTED_BORDER);
+            for (TerminalPane pane : panes) {
+                if (!highlighted.contains(pane)) {
+                    continue;
+                }
+                gc.save();
+                double x = Math.round(pane.x()) + 2.0;
+                double y = Math.round(pane.y()) + 2.0;
+                double width = Math.max(0.0, pane.width() - 4.0);
+                double height = Math.max(0.0, pane.height() - 4.0);
+                TerminalRenderer.clip(gc, Math.round(pane.x()), Math.round(pane.y()), pane.width(), pane.height(), pane.clip());
+                gc.strokeRect(x, y, width, height);
+                gc.restore();
+            }
+        } finally {
+            gc.restore();
+        }
+    }
+
+    private void removePaneFromSyncState(TerminalPane pane) {
+        boolean changed = paneSyncSelection.remove(pane);
+        changed |= paneSyncPanes.remove(pane);
+        if (paneSyncPanes.size() < 2) {
+            changed |= !paneSyncPanes.isEmpty();
+            paneSyncPanes.clear();
+        }
+        if (changed) {
+            layoutVersion++;
+        }
+    }
+
+    private void prunePaneSyncState() {
+        Set<TerminalPane> live = livePanes();
+        paneSyncSelection.retainAll(live);
+        paneSyncPanes.retainAll(live);
+        if (paneSyncPanes.size() < 2) {
+            paneSyncPanes.clear();
+        }
+    }
+
+    private Set<TerminalPane> livePanes() {
+        Set<TerminalPane> live = new HashSet<>();
+        for (Tab tab : tabs) {
+            live.addAll(tab.allPanes());
+        }
+        return live;
+    }
+
     // ---- Input ----------------------------------------------------------------------
 
     private void handleMousePressed(MouseEvent event) {

src/main/java/com/gregor/jprototerm/Main.java

@@ -4,7 +4,8 @@ package com.gregor.jprototerm;
  * Entry point and mode dispatch. A bare invocation is a thin client: it hands the request to a
  * running {@link Daemon}, or, if none is reachable, opens a single standalone window in this process
  * (today's behavior). {@code --daemon} runs the long-lived server that hosts every window in one
- * JVM, so client launches skip cold JVM/JavaFX/GL startup.
+ * JVM, so client launches skip cold JVM/JavaFX/GL startup. {@code --standalone} skips daemon client
+ * mode and always opens an in-process window, which is useful while testing development builds.
  */
 public final class Main {
     private Main() {
@@ -14,15 +15,19 @@ public final class Main {
         // Match the renderer order the app was tuned for; honor an explicit override if present.
         System.setProperty("prism.order", System.getProperty("prism.order", "es2,sw"));
 
+        boolean standalone = false;
         for (String arg : args) {
             if (arg.equals("--daemon")) {
                 Daemon.run();
                 return;
             }
+            if (arg.equals("--standalone")) {
+                standalone = true;
+            }
         }
 
         String workingDirectory = System.getProperty("user.dir");
-        if (Daemon.tryClient(workingDirectory)) {
+        if (!standalone && Daemon.tryClient(workingDirectory)) {
             return; // a running daemon opened the window
         }
         // No daemon reachable: fall back to a standalone window; the JVM exits when it closes.

src/main/java/com/gregor/jprototerm/TerminalWindow.java

@@ -71,6 +71,9 @@ final class TerminalWindow {
         keyActions.put("next_tab", compositor::nextTab);
         keyActions.put("open_font_selector", this::openFontSelector);
         keyActions.put("open_scrollback", this::openScrollbackInEditor);
+        keyActions.put("create_worktree", this::createWorktreeInEditor);
+        keyActions.put("pane_sync_toggle", compositor::togglePaneSync);
+        keyActions.put("pane_sync_select", compositor::togglePaneSyncSelection);
         keyActions.put("paste", this::pasteFromClipboard);
 
         StackPane root = new StackPane(compositor.canvas(), compositor.imageOverlay());
@@ -130,19 +133,51 @@ final class TerminalWindow {
 
     private void handlePressed(KeyEvent event) {
         for (Map.Entry<String, Runnable> action : keyActions.entrySet()) {
-            if (config.keybindings().get(action.getKey()).matches(event)) {
+            String actionName = action.getKey();
+            if (config.keybindings().get(actionName).matches(event)) {
+                if (actionName.equals("pane_sync_select") && !compositor.isPaneSyncSelecting()) {
+                    continue;
+                }
+                if (compositor.isPaneSyncSelecting() && !allowedDuringPaneSyncSelection(actionName)) {
+                    event.consume();
+                    return;
+                }
                 action.getValue().run();
                 event.consume();
                 return;
             }
         }
+        if (compositor.isPaneSyncSelecting()) {
+            event.consume();
+            return;
+        }
         String encoded = KeyEncoder.encode(event);
         if (encoded != null) {
             sendToActivePane(encoded, event);
         }
     }
 
+    private static boolean allowedDuringPaneSyncSelection(String action) {
+        return switch (action) {
+            case "navigate_left",
+                    "navigate_down",
+                    "navigate_up",
+                    "navigate_right",
+                    "toggle_floating",
+                    "next_floating",
+                    "previous_tab",
+                    "next_tab",
+                    "pane_sync_toggle",
+                    "pane_sync_select" -> true;
+            default -> false;
+        };
+    }
+
     private void handleTyped(KeyEvent event) {
+        if (compositor.isPaneSyncSelecting()) {
+            event.consume();
+            return;
+        }
         if (event.isAltDown() || event.isControlDown() || event.isMetaDown()) {
             return;
         }
@@ -159,6 +194,9 @@ final class TerminalWindow {
         TerminalPane active = compositor.activePane();
         if (active != null) {
             active.send(text);
+            for (TerminalPane peer : compositor.paneSyncPeers(active)) {
+                peer.send(text);
+            }
             event.consume();
         }
     }
@@ -167,7 +205,11 @@ final class TerminalWindow {
         TerminalPane active = compositor.activePane();
         Clipboard clipboard = Clipboard.getSystemClipboard();
         if (active != null && clipboard.hasString()) {
-            active.paste(clipboard.getString());
+            String text = clipboard.getString();
+            active.paste(text);
+            for (TerminalPane peer : compositor.paneSyncPeers(active)) {
+                peer.paste(text);
+            }
         }
     }
 
@@ -230,13 +272,30 @@ final class TerminalWindow {
             // — no shell startup/rc race — and the pane auto-closes when the editor exits. The
             // trailing rm removes the file (which holds terminal contents) when the editor exits;
             // deleteOnExit would leak files for the JVM's whole lifetime in daemon mode.
-            compositor.openFloatingPane(scrollbackEditorCommand(file) + "; rm -f " + shellQuote(file.toString()));
+            compositor.openFloatingPane(editorCommand(file) + "; rm -f " + shellQuote(file.toString()));
         } catch (IOException ex) {
             System.err.println("Could not open scrollback in editor: " + ex.getMessage());
         }
     }
 
-    private String scrollbackEditorCommand(Path file) {
+    private void createWorktreeInEditor() {
+        // The floating pane command inherits the active pane's cwd at creation time, so the git
+        // worktree command runs from the pane that was focused before this shortcut opened.
+        TerminalPane active = compositor.activePane();
+        if (active == null) {
+            return;
+        }
+        try {
+            Path file = Files.createTempFile("jprototerm-worktree-", ".txt");
+            Files.writeString(file, "");
+
+            compositor.openFloatingPane(worktreeEditorCommand(file));
+        } catch (IOException ex) {
+            System.err.println("Could not create worktree from editor input: " + ex.getMessage());
+        }
+    }
+
+    private String editorCommand(Path file) {
         String quotedFile = shellQuote(file.toString());
         String command = config.scrollbackEditorCommand();
         if (command == null || command.isBlank()) {
@@ -248,6 +307,25 @@ final class TerminalWindow {
         return command + " " + quotedFile;
     }
 
+    private String worktreeEditorCommand(Path file) {
+        String quotedFile = shellQuote(file.toString());
+        String relativePath = config.worktreeRelativePath();
+        if (relativePath == null || relativePath.isBlank()) {
+            relativePath = "./.worktrees";
+        }
+
+        return editorCommand(file)
+                + "; editor_status=$?"
+                + "; name=$(cat " + quotedFile + ")"
+                + "; if [ \"$editor_status\" -eq 0 ] && [ -n \"$name\" ]; then"
+                + " git worktree add " + shellQuote(relativePath) + "/\"$name\""
+                + "; git_status=$?"
+                + "; else git_status=$editor_status"
+                + "; fi"
+                + "; rm -f " + quotedFile
+                + "; exit \"$git_status\"";
+    }
+
     private static String shellQuote(String value) {
         return "'" + value.replace("'", "'\"'\"'") + "'";
     }