Theme switcher implemented

main.py

@@ -15,9 +15,10 @@ Version: 0.1
 import pathlib
 import platform
 import sys
+import threading
 import webbrowser
 import yaml
-from PyQt6.QtCore import QFileSystemWatcher, Qt
+from PyQt6.QtCore import QFileSystemWatcher, Qt, QTimer
 from PyQt6.QtGui import QAction, QStandardItem, QStandardItemModel, QIcon, QPalette
 from PyQt6.QtWebEngineWidgets import QWebEngineView
 from PyQt6.QtWebEngineCore import QWebEngineSettings
@@ -25,6 +26,9 @@ from PyQt6.QtWidgets import QApplication, QMainWindow, QTextEdit, QHBoxLayout, Q
     QMessageBox, QTreeView, QFileDialog, QAbstractItemView, QLineEdit, QVBoxLayout
 from markdown2 import markdown
 from fuzzywuzzy import process, fuzz
+import logging
+
+logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')
 
 
 class MarkdownEditor(QMainWindow):
@@ -43,6 +47,7 @@ class MarkdownEditor(QMainWindow):
 
     def __init__(self):
         """ Initializes the Markdown editor application with UI setup and configuration management. """
+        logging.info("Initializing the Markdown Editor...")
         super().__init__()
         self.dataDirectory = None
         self.preview = None
@@ -62,100 +67,115 @@ class MarkdownEditor(QMainWindow):
         self.update_directory_tree_view()
         self.fileSystemWatcher.directoryChanged.connect(self.update_directory_tree_view)
         self.load_initial_file()
+        self.searchTimer = QTimer()
+        self.searchTimer.setSingleShot(True)
+        self.searchTimer.timeout.connect(self.perform_search)
 
     def initialize_ui(self):
         """ Sets up the application's user interface components. """
+        logging.info("Setting up the user interface...")
         self.setWindowTitle("Markdown Editor")
         width = self.config['window']['width']
         height = self.config['window']['height']
         self.setGeometry(100, 100, width, height)
         icon_path = self.dataDirectory / 'data' / 'smile.png'
         self.setWindowIcon(QIcon(str(icon_path)))
-
-        # Create the directory tree view
         self.directoryTree = QTreeView()
         self.directoryTree.setHeaderHidden(True)
         self.directoryTree.setEditTriggers(QAbstractItemView.EditTrigger.NoEditTriggers)
         self.directoryTree.doubleClicked.connect(self.on_file_double_clicked)
-
-        # Create the QLineEdit widget for the search box
         self.searchBox = QLineEdit()
-        self.searchBox.setPlaceholderText("Search...")  # Placeholder text for the search box
+        self.searchBox.setPlaceholderText("Search...")
-        self.searchBox.textChanged.connect(self.on_search_text_changed)  # Connect to search handler
+        self.searchBox.textChanged.connect(self.on_search_text_changed)
-
-        # Create a QVBoxLayout for the directory tree and search box
         directory_layout = QVBoxLayout()
-        directory_layout.addWidget(self.searchBox)  # Add the search box to the layout
+        directory_layout.addWidget(self.searchBox)
-        directory_layout.addWidget(self.directoryTree)  # Add the directory tree below the search box
+        directory_layout.addWidget(self.directoryTree)
-
-        # Text editor setup
         self.editor = QTextEdit()
         self.editor.textChanged.connect(self.update_preview)
-
-        # Preview setup
         self.preview = QWebEngineView()
-
         web_engine_settings = self.preview.page().settings()
         web_engine_settings.setAttribute(QWebEngineSettings.WebAttribute.LocalContentCanAccessFileUrls, True)
         web_engine_settings.setAttribute(QWebEngineSettings.WebAttribute.LocalContentCanAccessRemoteUrls, True)
-
-        # Main layout setup
         layout = QHBoxLayout()
-        layout.addLayout(directory_layout, 0)  # Add the QVBoxLayout with the search box and directory tree
+        layout.addLayout(directory_layout, 0)
         layout.addWidget(self.editor, 1)
         layout.addWidget(self.preview, 1)
-
-        # Set the main layout
         container = QWidget()
         container.setLayout(layout)
         self.setCentralWidget(container)
-
-        # Toolbar, menu bar, and status bar setup
         self.create_tool_bar()
         self.create_menu_bar()
         self.setStatusBar(QStatusBar(self))
 
-
     def initialize_data_directory(self):
-        """ Initializes the data directory and sets up the file system watcher. """
+        """
-        data_directory = self.config['dataDirectory']
+        Initializes the data directory and sets up the file system watcher.
-        self.dataDirectory = pathlib.Path(data_directory).resolve()
+        """
-        if not self.dataDirectory.is_dir():
+        logging.info("Initializing data directory.")
-            QMessageBox.critical(self, "Directory Error", "The application's directory is not valid.")
+        try:
+            data_directory = self.config.get('dataDirectory', str(pathlib.Path.home()))
+            self.dataDirectory = pathlib.Path(data_directory).resolve()
+            if not self.dataDirectory.is_dir():
+                raise FileNotFoundError(f"Data directory not found: {self.dataDirectory}")
+            self.fileSystemWatcher.addPath(str(self.dataDirectory))
+            logging.info(f"Data directory set to: {self.dataDirectory}")
+        except Exception as e:
+            logging.error(f"Failed to initialize data directory: {e}")
+            QMessageBox.critical(self, "Directory Error", str(e))
             sys.exit(1)
-        self.fileSystemWatcher.addPath(str(self.dataDirectory))
-
 
     def on_search_text_changed(self, text):
-        """
+        self.searchText = text
-        Handles the search functionality.
+        if not text:
-        First, tries an exact match. If no results are found, uses fuzzy matching and gradually increases fuzziness.
+            self.update_directory_tree_view()
-        """
+        else:
-        if not self.dataDirectory or not self.dataDirectory.is_dir():
+            self.searchTimer.start(60)
-            return
+
+    def update_search_results(self, text):
         model = QStandardItemModel()
+        self.populate_filtered_model(model, self.dataDirectory, text)
         self.directoryTree.setModel(model)
-        try:
-            entries = list(self.dataDirectory.rglob('*'))
-            filtered_entries = []
-            if text:
-                filtered_entries = [entry for entry in entries if text.lower() in entry.name.lower()]
-            fuzziness = 100
-            while not filtered_entries and fuzziness > 0:
-                matches = [(entry, fuzz.partial_ratio(text.lower(), entry.name.lower()))
-                           for entry in entries]
-                filtered_entries = [entry for entry, score in matches if score >= fuzziness]
-                if len(filtered_entries) >= 2:
-                    break
-                fuzziness -= 5
-            for entry in filtered_entries:
-                self.add_item_to_model(model, entry, is_dir=entry.is_dir())
-        except Exception as e:
-            QMessageBox.critical(self, "Search Error", f"An error occurred during the search: {e}")
 
+    def perform_search(self):
+        threading.Thread(target=self.update_search_results, args=(self.searchText,)).start()
 
+    def populate_filtered_model(self, parent_item, directory, text, fuzziness=100, depth=0):
+        """
+        Recursively populates the directory tree model with filtered contents based on the search text.
 
-    def add_item_to_model(self, model, entry, is_dir=False):
+        Args:
+            parent_item (QStandardItem): The parent item in the tree view model.
+            directory (pathlib.Path): The directory to scan.
+            text (str): The search text.
+            fuzziness (int): The fuzziness level for matching file names.
+            depth (int): Current depth of recursion.
+        """
+        if depth > self.depth:
+            return False
+        dir_added = False
+        for entry in sorted(directory.iterdir(), key=lambda e: (e.is_file(), e.name.lower())):
+            if entry.is_dir():
+                dir_item = QStandardItem(entry.name)
+                if self.populate_filtered_model(dir_item, entry, text, fuzziness, depth + 1):
+                    parent_item.appendRow(dir_item)
+                    dir_added = True
+            elif entry.suffix == '.md' and self.is_match(entry.name, text, fuzziness):
+                file_item = QStandardItem(entry.name)
+                file_item.setData(str(entry))
+                parent_item.appendRow(file_item)
+                dir_added = True
+        return dir_added
+
+    @staticmethod
+    def is_match(filename, text, fuzziness):
+        if not text:
+            return False
+        if fuzziness == 100:
+            return text.lower() in filename.lower()
+        return fuzz.partial_ratio(text.lower(), filename.lower()) >= fuzziness
+
+    @staticmethod
+    def add_item_to_model(model, entry, is_dir=False):
         """
         Adds an item to the directory tree model.
 
@@ -171,7 +191,6 @@ class MarkdownEditor(QMainWindow):
             item.setIcon(QIcon('icons/folder_icon.png'))
         model.appendRow(item)
 
-
     @staticmethod
     def get_config_path():
         """
@@ -211,10 +230,22 @@ class MarkdownEditor(QMainWindow):
         Load the configuration from the configuration file.
 
         Returns:
-            dict: The loaded configuration.
+            dict: The loaded configuration with default values if keys are missing.
         """
-        with open(self.config_path) as file:
+        default_config = {
-            return yaml.safe_load(file)
+            'window': {'width': 800, 'height': 600},
+            'dataDirectory': str(pathlib.Path(__file__).parent.resolve()),
+            'depth': 5
+        }
+        try:
+            with open(self.config_path) as file:
+                config = yaml.safe_load(file) or {}
+        except FileNotFoundError:
+            config = {}
+        for key, value in default_config.items():
+            config.setdefault(key, value)
+        self.depth = config['depth']
+        return config
 
     def save_config(self):
         """
@@ -286,7 +317,12 @@ class MarkdownEditor(QMainWindow):
         view_menu = menu_bar.addMenu("&View")
         self.add_actions_to_menu(view_menu, [
             ("Toggle Split View Mode", self.toggle_split_view),
-            ("Toggle Toolbar", self.toggle_toolbar)
+            ("Toggle Toolbar", self.toggle_toolbar),
+            ("Theme", [
+                ("Dark", lambda: self.change_theme("dark")),
+                ("Light", lambda: self.change_theme("light")),
+                ("System", lambda: self.change_theme("system"))
+            ])
         ])
 
         window_menu = menu_bar.addMenu("&Window")
@@ -304,17 +340,17 @@ class MarkdownEditor(QMainWindow):
         ])
 
     def add_actions_to_menu(self, menu, actions):
-        """
+        for action_text, action_func in actions:
-        Add actions to a given menu.
+            if isinstance(action_func, list):  # Submenu
-
+                submenu = menu.addMenu(action_text)
-        Args:
+                for sub_action_text, sub_action_func in action_func:
-            menu (QMenu): The menu to which actions will be added.
+                    sub_action = QAction(sub_action_text, self)
-            actions (list of tuples): Each tuple contains the text for the menu item and the handler function.
+                    sub_action.triggered.connect(sub_action_func)
-        """
+                    submenu.addAction(sub_action)
-        for action_text, action_handler in actions:
+            else:
-            action = QAction(action_text, self)
+                action = QAction(action_text, self)
-            action.triggered.connect(action_handler)
+                action.triggered.connect(action_func)
-            menu.addAction(action)
+                menu.addAction(action)
 
     def create_tool_bar(self):
         """
@@ -495,30 +531,53 @@ class MarkdownEditor(QMainWindow):
     def populate_model(self, parent_item, directory, depth=0):
         """
         Populates the directory tree model with directory contents.
+        Shows all directories containing Markdown files and Markdown files themselves.
 
         Args:
             parent_item (QStandardItem): Item to populate.
             directory (pathlib.Path): Directory to scan.
             depth (int): Depth level for recursive scanning.
         """
-        if depth > 5:
+        if depth > self.depth:
             return
+
         try:
             for entry in sorted(directory.iterdir(), key=lambda e: (e.is_file(), e.name.lower())):
                 if entry.is_dir():
-                    if any(file.suffix == '.md' for file in entry.glob('*.md')):
+                    self.process_directory(entry, parent_item, depth)
-                        dir_item = QStandardItem(entry.name)
-                        dir_item.setData(str(entry))
-                        dir_item.setFlags(dir_item.flags() | Qt.ItemFlag.ItemIsEnabled)
-                        dir_item.setIcon(QIcon('icons/folder_icon.png'))
-                        parent_item.appendRow(dir_item)
-                        self.populate_model(dir_item, entry, depth + 1)
                 elif entry.suffix == '.md':
-                    file_item = QStandardItem(entry.name)
+                    self.add_file_item(entry, parent_item)
-                    file_item.setData(str(entry))
+        except PermissionError as e:
-                    parent_item.appendRow(file_item)
+            logging.error(f"Permission error accessing {directory}: {e}")
-        except PermissionError:
+
-            pass
+    @staticmethod
+    def add_file_item(file_path, parent_item):
+        """
+        Adds a file item to the model.
+
+        Args:
+            file_path (pathlib.Path): The file path to add.
+            parent_item (QStandardItem): The parent item in the model.
+        """
+        file_item = QStandardItem(file_path.name)
+        file_item.setData(str(file_path))
+        parent_item.appendRow(file_item)
+
+    def process_directory(self, directory, parent_item, depth):
+        """
+        Processes a single directory, adding it to the model if it contains Markdown files.
+
+        Args:
+            directory (pathlib.Path): The directory to process.
+            parent_item (QStandardItem): The parent item in the model.
+            depth (int): Current depth in the directory tree.
+        """
+        if any(file.suffix == '.md' for file in directory.iterdir()):
+            dir_item = QStandardItem(directory.name)
+            dir_item.setData(str(directory))
+            dir_item.setIcon(QIcon('icons/folder_icon.png'))
+            parent_item.appendRow(dir_item)
+            self.populate_model(dir_item, directory, depth + 1)
 
     def on_directory_tree_clicked(self, index):
         """
@@ -612,8 +671,64 @@ class MarkdownEditor(QMainWindow):
             else:
                 QMessageBox.critical(self, "Directory Selection Error", "Invalid directory path")
 
-    def change_theme(self):
+    def change_theme(self, theme):
-        pass
+        if theme == "dark":
+            self.apply_dark_theme()
+        elif theme == "light":
+            self.apply_light_theme()
+        elif theme == "system":
+            self.apply_system_theme()
+
+    def apply_dark_theme(self):
+        dark_stylesheet = """
+        QMainWindow {
+            background-color: #282c34; /* Dark gray background */
+            color: #abb2bf; /* Light gray text */
+        }
+        QMenuBar {
+            background-color: #21252b; /* Slightly darker gray for menu bar */
+            color: #abb2bf;
+        }
+        QMenuBar::item {
+            background-color: #21252b;
+            color: #abb2bf;
+        }
+        QMenuBar::item:selected { /* when selected using mouse or keyboard */
+            background-color: #282c34;
+        }
+        QTextEdit, QTreeView {
+            background-color: #282c34;
+            color: #abb2bf;
+        }
+        """
+        self.setStyleSheet(dark_stylesheet)
+
+    def apply_light_theme(self):
+        light_stylesheet = """
+        QMainWindow {
+            background-color: #fafafa; /* Very light gray, almost white */
+            color: #383a42; /* Dark gray text */
+        }
+        QMenuBar {
+            background-color: #f0f0f0; /* Light gray for menu bar */
+            color: #383a42;
+        }
+        QMenuBar::item {
+            background-color: #f0f0f0;
+            color: #383a42;
+        }
+        QMenuBar::item:selected {
+            background-color: #fafafa;
+        }
+        QTextEdit, QTreeView {
+            background-color: #fafafa;
+            color: #383a42;
+        }
+        """
+        self.setStyleSheet(light_stylesheet)
+
+    def apply_system_theme(self):
+        self.setStyleSheet("")
 
     def open_settings(self):
         pass
@@ -655,6 +770,7 @@ class MarkdownEditor(QMainWindow):
 
 def main():
     """ Main function to run the Markdown Editor application. """
+    logging.info("Launching the application...")
     app = QApplication(sys.argv)
     editor = MarkdownEditor()
     editor.show()