apprt/gtk: handle pwd action

Use it as a tooltip for the tab.

Signed-off-by: Tristan Partin <tristan@partin.io>

src/apprt/gtk/App.zig

@@ -465,6 +465,7 @@ pub fn performAction(
         .inspector => self.controlInspector(target, value),
         .desktop_notification => self.showDesktopNotification(target, value),
         .set_title => try self.setTitle(target, value),
+        .pwd => try self.setPwd(target, value),
         .present_terminal => self.presentTerminal(target),
         .initial_size => try self.setInitialSize(target, value),
         .mouse_visibility => self.setMouseVisibility(target, value),
@@ -486,7 +487,6 @@ pub fn performAction(
         .render_inspector,
         .renderer_health,
         .color_change,
-        .pwd,
         => log.warn("unimplemented action={}", .{action}),
     }
 }
@@ -717,6 +717,17 @@ fn setTitle(
     }
 }
 
+fn setPwd(
+    _: *App,
+    target: apprt.Target,
+    pwd: apprt.action.Pwd,
+) !void {
+    switch (target) {
+        .app => {},
+        .surface => |v| try v.rt_surface.setPwd(pwd.pwd),
+    }
+}
+
 fn setMouseVisibility(
     _: *App,
     target: apprt.Target,

src/apprt/gtk/Surface.zig

@@ -868,6 +868,13 @@ pub fn getTitle(self: *Surface) ?[:0]const u8 {
     return null;
 }
 
+pub fn setPwd(self: *Surface, pwd: [:0]const u8) !void {
+    // If we have a tab and are the focused child, then we have to update the tab
+    if (self.container.tab()) |tab| {
+        tab.setTooltipText(pwd);
+    }
+}
+
 pub fn setMouseShape(
     self: *Surface,
     shape: terminal.MouseShape,

src/apprt/gtk/Tab.zig

@@ -112,6 +112,10 @@ pub fn setLabelText(self: *Tab, title: [:0]const u8) void {
     self.window.notebook.setTabLabel(self, title);
 }
 
+pub fn setTooltipText(self: *Tab, tooltip: [:0]const u8) void {
+    self.window.notebook.setTabTooltip(self, tooltip);
+}
+
 /// Remove this tab from the window.
 pub fn remove(self: *Tab) void {
     self.window.closeTab(self);

src/apprt/gtk/notebook.zig

@@ -223,6 +223,17 @@ pub const Notebook = union(enum) {
         }
     }
 
+    pub fn setTabTooltip(self: Notebook, tab: *Tab, tooltip: [:0]const u8) void {
+        switch (self) {
+            .adw_tab_view => |tab_view| {
+                if (comptime !adwaita.versionAtLeast(0, 0, 0)) unreachable;
+                const page = c.adw_tab_view_get_page(tab_view, @ptrCast(tab.box));
+                c.adw_tab_page_set_tooltip(page, tooltip.ptr);
+            },
+            .gtk_notebook => c.gtk_widget_set_tooltip_text(@ptrCast(@alignCast(tab.label_text)), tooltip.ptr),
+        }
+    }
+
     fn newTabInsertPosition(self: Notebook, tab: *Tab) c_int {
         const numPages = self.nPages();
         return switch (tab.window.app.config.@"window-new-tab-position") {