changed ui.py to add command palettes commands and changed diary_list_screen.py to add access to the about_screen.py

src/pilgrim/ui/screens/about_screen.py

@@ -0,0 +1,65 @@
+from textual.app import ComposeResult
+from textual.binding import Binding
+from textual.screen import Screen
+from textual.widgets import Header, Footer, Button, Label, TextArea
+from textual.containers import Container
+
+class AboutScreen(Screen[bool]):
+    """Tela para exibir informações sobre a aplicação."""
+
+    TITLE = "Pilgrim - About"
+
+    BINDINGS = [
+        Binding("escape", "dismiss", "Close"),
+    ]
+
+    def __init__(self):
+        super().__init__()
+        self.header = Header()
+        self.footer = Footer()
+        self.app_title = Label("Pilgrim", id="AboutScreen_AboutTitle")
+        self.content = Label("A TUI Based Travel Diary Application", id="AboutScreen_AboutContent")
+        self.version = Label("Version: 0.0.1", id="AboutScreen_AboutVersion")
+        self.developer = Label("Developed By: Gustavo Henrique Miranda ", id="AboutScreen_AboutAuthor")
+        self.contact = Label("git.gustavomiranda.xyz", id="AboutScreen_AboutContact")
+        self.license = TextArea(id="AboutScreen_AboutLicense")
+        self.license.text = """Copyright (c) 2025 GHMiranda. 
+
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."""
+        self.license.read_only = True
+        self.about_container = Container(self.app_title, self.content, self.version, self.developer, self.contact,
+                                         id="AboutScreen_SubContainer")
+        self.container = Container(self.about_container, self.license, id="AboutScreen_AboutContainer")
+
+    def compose(self) -> ComposeResult:
+        yield self.header
+        yield self.container
+        yield self.footer
+
+    def on_button_pressed(self, event: Button.Pressed) -> None:
+        """Lida com os cliques dos botões."""
+        if "about-close-button" in event.button.classes:
+            self.dismiss(False)
+        elif "about-info-button" in event.button.classes:
+            self.notify("Mais informações seriam exibidas aqui!", title="Info")
+
+    def action_dismiss(self) -> None:
+        """Fecha o about box usando dismiss."""
+        self.dismiss(False)
+
+    def on_key(self, event) -> None:
+        """Intercepta teclas específicas."""
+        if event.key == "escape":
+            self.dismiss(False)
+            event.prevent_default()
+        elif event.key == "enter":
+            self.dismiss(False)
+            event.prevent_default()

src/pilgrim/ui/screens/diary_list_screen.py

@@ -8,6 +8,7 @@ from textual.binding import Binding
 from textual.containers import Vertical, Container, Horizontal
 
 from pilgrim.models.travel_diary import TravelDiary
+from pilgrim.ui.screens.about_screen import AboutScreen
 from pilgrim.ui.screens.edit_diary_modal import EditDiaryModal
 from pilgrim.ui.screens.new_diary_modal import NewDiaryModal
 
@@ -283,4 +284,7 @@ class DiaryListScreen(Screen):
 
     def action_open_selected_diary(self):
         """Ação do binding ENTER"""
-        self.action_open_diary()
+        self.action_open_diary()
+
+    def action_about_cmd(self):
+        self.app.push_screen(AboutScreen())

src/pilgrim/ui/ui.py

@@ -1,8 +1,12 @@
 from pathlib import Path
+from typing import Iterable
+
+from textual.app import App, SystemCommand
+from textual.screen import Screen
 
-from textual.app import App
 
 from pilgrim.service.servicemanager import ServiceManager
+from pilgrim.ui.screens.about_screen import AboutScreen
 from pilgrim.ui.screens.diary_list_screen import DiaryListScreen
 
 CSS_FILE_PATH = Path(__file__).parent / "styles" / "pilgrim.css"
@@ -11,11 +15,38 @@ CSS_FILE_PATH = Path(__file__).parent / "styles" / "pilgrim.css"
 class UIApp(App):
     CSS_PATH = CSS_FILE_PATH
 
-    def __init__(self,service_manager: ServiceManager):
-        super().__init__()
+    def __init__(self,service_manager: ServiceManager, **kwargs):
+        super().__init__(**kwargs)
         self.service_manager = service_manager
 
 
     def on_mount(self) -> None:
         """Chamado quando a app inicia. Carrega a tela principal."""
         self.push_screen(DiaryListScreen())
+
+    def get_system_commands(self, screen: Screen) -> Iterable[SystemCommand]:
+        """Return commands based on current screen."""
+
+        # Commands for DiaryListScreen
+        if isinstance(screen, DiaryListScreen):
+            yield SystemCommand(
+                "About Pilgrim",
+                "Open About Pilgrim",
+                screen.action_about_cmd
+            )
+
+        elif isinstance(screen, AboutScreen):
+            yield SystemCommand(
+                "Back to List",
+                "Return to the diary list",
+                screen.dismiss
+            )
+
+
+
+        # Always include quit command
+        yield SystemCommand(
+            "Quit Application",
+            "Exit Pilgrim",
+            self.action_quit
+        )