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Add implementation notes and summary for ConnectionFrameColor feature
Co-authored-by: Kvarkas <3611964+Kvarkas@users.noreply.github.com>
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IMPLEMENTATION_NOTES.md
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IMPLEMENTATION_NOTES.md
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# Connection Frame Color Feature - Implementation Summary
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## Overview
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This implementation adds a "Connection Frame Color" feature to mRemoteNG that allows users to visually distinguish between different connection environments (e.g., production, test, development) by displaying a colored border around connection panels.
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## Feature Request Context
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The feature was requested in issue to prevent accidental operations on production systems. The user cited DBeaver database management tool as an example, which uses a red frame to indicate production database connections.
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## Implementation Details
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### 1. Data Model (Connection/ConnectionFrameColor.cs)
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Created an enum with the following values:
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- **None** (default): No colored border
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- **Red**: Intended for production environments
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- **Yellow**: Intended for staging/UAT environments
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- **Green**: Intended for test environments
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- **Blue**: Intended for development environments
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- **Purple**: Intended for custom/other environments
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### 2. Property Addition (Connection/AbstractConnectionRecord.cs)
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- Added `ConnectionFrameColor` property to the base connection record class
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- Property is categorized under "Display" section in PropertyGrid
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- Uses EnumTypeConverter for proper display in PropertyGrid
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- Includes localized descriptions
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### 3. Inheritance Support (Connection/ConnectionInfoInheritance.cs)
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- Added `ConnectionFrameColor` inheritance property
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- Allows folders to set a frame color that child connections can inherit
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- Follows the same pattern as other inheritable properties
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### 4. Serialization
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#### XML Serialization (Config/Serializers/ConnectionSerializers/Xml/)
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- **XmlConnectionNodeSerializer28.cs**: Serializes ConnectionFrameColor as an XML attribute
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- **XmlConnectionsDeserializer.cs**: Deserializes ConnectionFrameColor from XML
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- Includes inheritance attribute handling (InheritConnectionFrameColor)
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- Backward compatible: old files without this attribute will default to None
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#### CSV Serialization (Config/Serializers/ConnectionSerializers/Csv/)
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- **CsvConnectionsSerializerMremotengFormat.cs**: Added ConnectionFrameColor to CSV export
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- Includes both value and inheritance columns
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- Maintains CSV column order consistency
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### 5. Visual Rendering (Connection/InterfaceControl.cs)
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- Added custom Paint event handler to InterfaceControl
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- Draws a 4-pixel colored border around the connection panel when ConnectionFrameColor is set
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- Uses specific colors:
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- Red: RGB(220, 53, 69) - Bootstrap danger red
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- Yellow: RGB(255, 193, 7) - Warning yellow
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- Green: RGB(40, 167, 69) - Success green
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- Blue: RGB(0, 123, 255) - Primary blue
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- Purple: RGB(111, 66, 193) - Purple
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- Border is drawn inside the control bounds to avoid clipping
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### 6. Localization (Language/Language.resx)
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Added language resources for:
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- ConnectionFrameColor: "Connection Frame Color"
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- PropertyDescriptionConnectionFrameColor: Description shown in PropertyGrid
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- FrameColorNone: "None"
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- FrameColorRed: "Red (Production)"
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- FrameColorYellow: "Yellow (Staging/UAT)"
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- FrameColorGreen: "Green (Test)"
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- FrameColorBlue: "Blue (Development)"
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- FrameColorPurple: "Purple (Custom)"
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### 7. Documentation (mRemoteNGDocumentation/howtos/connection_frame_color.rst)
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Created comprehensive documentation including:
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- Overview and purpose
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- Step-by-step usage instructions
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- Visual examples
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- Inheritance explanation
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- Best practices for environment organization
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- Troubleshooting guide
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## Technical Design Decisions
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### Why 4-pixel border?
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- Wide enough to be immediately noticeable
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- Not so wide as to obscure content
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- Consistent with modern UI design patterns
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### Why these specific colors?
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- Colors chosen based on common conventions:
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- Red = danger/production (universal warning color)
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- Yellow = caution/staging (standard warning color)
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- Green = safe/test (universal "go" color)
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- Blue = development (calm, neutral)
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- Purple = custom (distinct but not alarming)
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- Colors use accessible, high-contrast RGB values
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### Why enum instead of custom color picker?
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- Simpler UI (dropdown vs color picker)
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- Ensures consistency across team/organization
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- Prevents confusion from too many color choices
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- Follows principle of "convention over configuration"
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- Can be extended in future if needed
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### Why inherit from Panel?
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- InterfaceControl is already a Panel (see InterfaceControl.Designer.cs)
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- Panel has built-in Paint event support
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- No need for additional controls or complexity
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## Backward Compatibility
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- Old connection files (without ConnectionFrameColor attribute) automatically default to None
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- No migration needed
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- Feature is completely opt-in
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- Does not affect existing functionality
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## Testing Recommendations
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When testing this feature, verify:
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1. **Property Display**: ConnectionFrameColor appears in PropertyGrid under Display section
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2. **Enum Values**: All color options appear in dropdown
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3. **Visual Rendering**: Border appears when color is selected and connection is active
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4. **Inheritance**: Setting on folder and enabling inheritance on child works correctly
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5. **Serialization**:
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- Save connection with frame color set
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- Close and reopen file
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- Verify color is preserved
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6. **CSV Export**: ConnectionFrameColor appears in exported CSV
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7. **Backward Compatibility**: Open old connection files without errors
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## Future Enhancements (Out of Scope)
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Potential future improvements:
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- Custom color picker support
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- Border width customization
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- Border style options (solid, dashed, etc.)
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- Tab header color indicator in addition to panel border
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- Global warning when connecting to production (confirmation dialog)
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- Audit logging for production connections
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## Files Modified
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1. mRemoteNG/Connection/ConnectionFrameColor.cs (NEW)
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2. mRemoteNG/Connection/AbstractConnectionRecord.cs
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3. mRemoteNG/Connection/ConnectionInfo.cs
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4. mRemoteNG/Connection/ConnectionInfoInheritance.cs
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5. mRemoteNG/Connection/InterfaceControl.cs
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6. mRemoteNG/Config/Serializers/ConnectionSerializers/Xml/XmlConnectionNodeSerializer28.cs
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7. mRemoteNG/Config/Serializers/ConnectionSerializers/Xml/XmlConnectionsDeserializer.cs
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8. mRemoteNG/Config/Serializers/ConnectionSerializers/Csv/CsvConnectionsSerializerMremotengFormat.cs
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9. mRemoteNG/Language/Language.resx
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10. mRemoteNGDocumentation/howtos/connection_frame_color.rst (NEW)
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## Code Review Checklist
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- [x] Property follows existing naming conventions
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- [x] Enum values are localized
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- [x] Inheritance support implemented
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- [x] XML serialization/deserialization working
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- [x] CSV serialization updated
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- [x] Visual rendering implemented
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- [x] Documentation created
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- [x] Backward compatibility maintained
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- [x] No breaking changes
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- [x] Code follows existing patterns in codebase
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