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CHANGELOG.md

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Changelog

All notable changes to MarkViewPro will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

1.4.5 - 2026-01-28

Added

  • Single Instance Mode: App now uses single instance lock - opening a file when app is already running opens the file in the existing window as a new tab instead of launching a new window
  • Open in New Tab Setting: New setting to control file open behavior (default: enabled)
    • When enabled, files opened from file explorer or command line open in new tab
    • Setting available in Settings modal under "Open files in new tab"

Changed

  • Files associated with MarkViewPro now open in the existing instance instead of spawning new windows
  • Improved window focus behavior when opening files from external sources

Technical

  • Implemented Wails SingleInstanceLock with OnSecondInstanceLaunch callback
  • Added openInNewTab setting to backend and frontend
  • Added open-file-from-instance event handling for cross-instance communication

1.3.1 - 2026-01-26

Added

  • File Association Support: MarkViewPro can now be set as the default app for .md and .markdown files
    • Double-click markdown files to open them directly in MarkViewPro
    • CLI argument handling for file paths
    • NSIS installer script for Windows file association registration
    • New GetInitialFile() backend method

Fixed

  • Save Button: Fixed save not working - now properly saves active tab content
    • Uses active tab's file path and content instead of stale state
    • Correctly handles "Save As" for new unsaved files
    • Updates tab state (modified indicator, file name) after saving
  • TOC Showing Old Data: Fixed Table of Contents showing headings from previous welcome content
    • TOC now correctly shows empty when no files are open
    • Headings update properly when switching tabs

Changed

  • New App Icon: Modern, professional icon with glowing cyan "M" on dark background
    • Matches the app's dark theme and branding
    • Professional look suitable for macOS dock and Windows taskbar

1.3.0 - 2026-01-26

🎉 Major Features Added

1. Split View Editor with Monaco

  • Full Monaco Editor Integration: Professional code editor with syntax highlighting
  • Three View Modes: Preview-only, Editor-only, and Split view
  • Resizable Split Pane: Drag the divider to adjust editor/preview ratio
  • Real-time Sync: Changes in editor instantly reflect in preview
  • Advanced Editor Features:
    • Minimap for quick navigation
    • Line numbers and code folding
    • Bracket pair colorization
    • IntelliSense and auto-completion
    • Multiple cursors support
  • Keyboard Shortcut: Ctrl+\ to toggle split view
  • New Components: MarkdownEditor.tsx, SplitView.tsx, ViewModeToggle.tsx

2. Mermaid Diagram Support

  • Automatic Diagram Rendering: All mermaid code blocks render as diagrams
  • Comprehensive Diagram Types:
    • Flowcharts and flow diagrams
    • Sequence diagrams
    • Pie charts and bar charts
    • State diagrams
    • Gantt charts
    • Class diagrams
    • Entity relationship diagrams
    • User journey diagrams
  • Dark Theme Integration: Diagrams styled to match app theme
  • Error Handling: Helpful error messages for invalid syntax
  • New Component: MermaidDiagram.tsx

3. Command Palette

  • Quick Command Access: Press Ctrl+Shift+P to open
  • Fuzzy Search: Type to filter commands instantly
  • Keyboard Navigation: Arrow keys + Enter to execute
  • 17+ Commands Available:
    • File operations (Open, Save, New)
    • View mode switching (Preview, Editor, Split)
    • Export functions (PDF, HTML)
    • Zoom controls
    • Settings and preferences
    • Sidebar and fullscreen toggles
  • Categorized Commands: File, View, Export, Other
  • Shortcut Display: Shows keyboard shortcuts for each command
  • New Component: CommandPalette.tsx

4. Folder/Project Support

  • Open Entire Folders: Work with multiple markdown files as a project
  • File Tree Navigation: Browse files in hierarchical tree structure
  • Recursive Scanning: Automatically finds all markdown files
  • Smart Filtering: Shows only .md and .markdown files
  • Expandable/Collapsible Folders: Clean navigation with folder icons
  • File Selection Highlighting: Visual feedback for active file
  • Max Depth Control: Configurable folder depth (default: 3 levels)
  • Keyboard Shortcut: Ctrl+Shift+O to open folder
  • New Backend: internal/foldermanager/foldermanager.go
  • New Component: FileTree.tsx
  • Sidebar Integration: New "Files" tab in sidebar

5. Image Paste & Management

  • Clipboard Paste: Copy any image and paste directly with Ctrl+V
  • Drag & Drop Images: Drag image files into the app
  • Auto-Save to Assets: Images automatically saved to assets/ folder
  • Unique Filenames: Timestamp-based naming prevents conflicts
  • Automatic Markdown Insertion: Image syntax inserted at cursor position
  • Format Support: PNG, JPG, JPEG, GIF, WebP
  • Smart Path Management: Relative paths for portability
  • New Backend: internal/imagemanager/imagemanager.go
  • Seamless Integration: Works in Editor and Split view modes

Added

  • New Dependencies:
    • monaco-editor (^0.45.0) - Professional code editor
    • @monaco-editor/react (^4.6.0) - React wrapper for Monaco
    • mermaid (^10.6.1) - Diagram rendering library
  • New Backend Packages:
    • internal/foldermanager - Folder operations and tree building
    • internal/imagemanager - Image handling and asset management
  • New Frontend Components:
    • components/Editor/MarkdownEditor.tsx - Monaco editor wrapper
    • components/SplitView/SplitView.tsx - Split view container
    • components/Toolbar/ViewModeToggle.tsx - View mode switcher
    • components/CommandPalette/CommandPalette.tsx - Command palette UI
    • components/FileTree/FileTree.tsx - File tree navigation
    • components/Viewer/MermaidDiagram.tsx - Mermaid renderer
  • New Wails Bindings:
    • OpenFolder() - Open folder dialog
    • GetFolderTree() - Get file tree structure
    • ReadFileFromFolder() - Read file from folder
    • SavePastedImage() - Save base64 image data
    • CopyImageToAssets() - Copy image file to assets
  • Enhanced Keyboard Shortcuts:
    • Ctrl+Shift+P - Open command palette
    • Ctrl+\ - Toggle split view
    • Ctrl+Shift+O - Open folder
  • View Mode State Management: Track and persist view preferences
  • Tab Content Updates: Support for editing in tabs
  • Status Bar Enhancement: Shows current view mode

Changed

  • App.tsx: Complete rewrite to integrate all new features
  • Sidebar: Added "Files" tab for folder navigation
  • StatusBar: Added view mode indicator
  • useTabs Hook: Added updateTabContent() method for editor changes
  • wailsBindings: Extended with new backend methods
  • MarkdownViewer: Enhanced to detect and render mermaid blocks

Technical

  • Architecture: Clean separation between view modes
  • State Management: Centralized view mode and folder state
  • Performance: Optimized Monaco editor loading
  • Error Handling: Comprehensive error handling for all new features
  • Type Safety: Full TypeScript coverage for new components
  • Documentation: Added NEW_FEATURES_SUMMARY.md and FEATURES_IMPLEMENTATION.md

Developer Experience

  • Demo File: Created DEMO.md with examples of all features
  • Implementation Guide: Detailed integration steps
  • Code Organization: Modular component structure
  • Testing Ready: All features ready for testing

1.2.4 - 2026-01-26

Fixed

  • Search Bar Black Screen: Fixed UI turning black when closing search bar
  • Improved DOM manipulation safety in search functionality
  • Added error handling for highlight clearing operations
  • Force re-render of markdown viewer when search state changes

1.2.3 - 2026-01-26

Fixed

  • Sidebar Collapsed by Default: Sidebar now starts collapsed for cleaner initial view
  • Tab Content Switching: Fixed content not updating when switching between tabs
    • Each tab now properly displays its own content
    • Headings update correctly per tab
    • Stats (word count, character count, etc.) update per tab
    • Welcome message no longer persists when switching tabs

Technical

  • Added activeContent, activeHeadings, and activeStats computed from active tab
  • Welcome tab now loads with full welcome markdown content
  • Exported defaultMarkdown from useMarkdown hook
  • Proper content synchronization between tabs and viewer

1.2.2 - 2026-01-26

Improved

  • Tabs in Titlebar: Tabs now centered in titlebar for cleaner design
    • Removed separate tab bar row
    • Tabs integrated directly into titlebar center
    • More vertical space for content
    • Professional, modern appearance like VS Code
    • Smooth transitions between title and tabs

Technical

  • Merged TabBar component into Titlebar
  • Tabs now render in titlebar's center flex container
  • Removed redundant TabBar import and component

1.2.1 - 2026-01-26

Improved

  • Titlebar Design: Cleaner, more professional titlebar
    • Removed left-side branding when files are open
    • "MarkView Pro" title now centered when no files are open
    • Title disappears when tabs are visible
    • More space for tabs and controls
  • Welcome Screen Behavior: Smarter welcome tab handling
    • Welcome tab automatically closes when opening first file
    • Welcome tab closes when creating new document
    • Welcome tab closes when dropping files
    • Prevents cluttering workspace with welcome screen

Technical

  • Added hasOpenFiles prop to Titlebar component
  • Improved tab replacement logic for welcome screen
  • Enhanced drag and drop to handle welcome tab closure
  • Cleaner conditional rendering of title vs tabs

1.2.0 - 2026-01-26

Added

  • Tab Support: Open multiple markdown files in tabs
    • Click tabs to switch between files
    • Close tabs with X button (keeps at least one tab open)
    • Drag and drop multiple files to open in separate tabs
    • Each tab maintains its own state (content, modified status, file path)
    • Visual indicator for modified tabs
  • Drag & Drop Visual Feedback: Beautiful overlay when dragging files
    • Shows "Drop Markdown Files Here" message
    • Animated backdrop blur effect
    • File icon and instructions

Fixed

  • Drag & Drop: Now works correctly - files open in tabs instead of browser window
    • Properly prevents default browser behavior
    • Supports dropping multiple files at once
    • Only accepts .md and .markdown files
    • Uses FileReader API for reliable file reading

Technical

  • Created useTabs hook for tab state management
  • Created TabBar component for tab UI
  • Implemented HTML5 drag and drop with proper event handling
  • Added drag state tracking for visual feedback
  • Tab system prevents duplicate file opens

1.1.7 - 2026-01-26

Fixed

  • Drag & Drop: Fixed files opening in separate browser window - now properly prevents default browser behavior
  • HTML Export: Fixed HTML export not working - now shows save dialog and exports correctly
  • Welcome Message: Replaced "Untitled" with proper welcome message and better default file names

Improved

  • Welcome Screen: Complete redesign with comprehensive feature showcase
    • Added emoji icons for better visual appeal
    • Included all keyboard shortcuts in a table
    • Added Mermaid diagram example
    • Added math equation examples
    • Better organized feature sections
    • Tips and tricks section
  • Default File Names:
    • Welcome screen now shows "Welcome to MarkView Pro"
    • New documents show "New Document" instead of null/Untitled
  • Drag & Drop: Added event listeners to prevent browser from opening dropped files

Technical

  • Added dragover, drop, dragenter, dragleave event prevention
  • Updated ExportToHTML to handle save dialog internally
  • Simplified HTML export API (no longer requires path parameter)
  • Enhanced welcome markdown content with 100+ lines of examples

1.1.6 - 2026-01-26

Fixed

  • Code Block Rendering: Fixed code blocks showing [object Object] - now properly extracts text from React elements
  • Save Functionality: Save now works correctly - uses Save As dialog when no file path exists
  • Export PDF: PDF export now works for both saved and unsaved files using ExportContentToPDF
  • Export HTML: HTML export properly handles content for all file states

Technical

  • Improved code block text extraction to handle React element children
  • Added SaveFileAs binding to frontend
  • Added ExportContentToPDF method for exporting unsaved content
  • Enhanced save logic to automatically prompt for file location when needed

1.1.5 - 2026-01-26

Fixed

  • Drag & Drop: Properly implemented file drag and drop functionality - now works correctly when dragging .md files onto the window
  • Save Function: Fixed save functionality to properly persist file changes
  • Export Functions: Fixed PDF and HTML export to properly handle file content and show save dialogs
  • Fullscreen Toggle: Fixed fullscreen button to properly maximize/restore window in frameless mode
  • File Opening: Fixed OpenFile to return proper file object with path, name, and content
  • ReadFileByPath: Now returns complete file information instead of just content

Technical

  • Updated Go backend to return structured file data (map with content, path, name)
  • Added domReady handler for drag and drop event initialization
  • Improved Wails bindings to handle new return types
  • Added ToggleFullscreen method for proper window maximize/restore
  • Enhanced error handling in file operations

1.1.0 - 2026-01-26

Added

  • Document Search: Search within documents with Ctrl+F, navigate results with Enter/Shift+Enter
  • Zoom Controls: Zoom in (Ctrl++), zoom out (Ctrl+-), reset zoom (Ctrl+0)
  • Reading Time Estimate: Shows estimated reading time in status bar (based on 200 words/min)
  • Print Support: Print documents with Ctrl+P with optimized print styles
  • Fullscreen Mode: Toggle fullscreen with F11 for distraction-free reading
  • Mermaid Diagrams: Full support for Mermaid diagram rendering in code blocks
  • Math Support: KaTeX integration for rendering mathematical equations
  • Improved Tables: Better table rendering with horizontal scroll for wide tables

Fixed

  • Code blocks now render properly instead of showing [object Object]
  • Fullscreen mode now properly tracks state when exiting with ESC key
  • TypeScript compilation errors resolved for all components

Technical

  • Enhanced keyboard shortcuts system with search, zoom, and fullscreen controls
  • Improved markdown rendering with better code block handling
  • Added fullscreen change event listeners for proper state management
  • Integrated SearchBar component with highlight and navigation features

1.0.0 - 2026-01-26

Added

  • Initial release of MarkViewPro
  • Live Markdown preview with syntax highlighting
  • Cross-platform support (Windows, macOS, Linux)
  • Dark and light theme support
  • File watching for automatic refresh
  • Export to HTML and PDF functionality
  • Table of contents generation
  • Code block syntax highlighting with multiple language support
  • Keyboard shortcuts for common actions
  • Drag and drop file support
  • Settings modal for customization
  • Status bar with file information
  • Modern UI with Tailwind CSS
  • Windows NSIS installer for easy installation

Fixed

  • Updated GitHub Actions workflow to use actions/upload-artifact@v4 (from deprecated v3)
  • Updated GitHub Actions workflow to use actions/download-artifact@v4

Technical

  • Built with Wails v2 framework
  • Go 1.21 backend
  • React + TypeScript frontend
  • Vite build system
  • Automated CI/CD pipeline with GitHub Actions