108 lines
2.6 KiB
Markdown
108 lines
2.6 KiB
Markdown
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# Command Processor Form (Cmdproc-4.frm)
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## Overview
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The Command Processor form provides a user interface for executing and managing commands in the application. It handles command parsing, validation, execution and result display.
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## Key Components
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### Command Input
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- Text input field for entering commands
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- Command history tracking and navigation
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- Auto-complete suggestions for commands
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### Command Processing
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- Parses raw command text into structured command objects
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- Validates command syntax and parameters
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- Routes commands to appropriate handlers
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- Manages command execution state and cancellation
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### Results Display
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- Shows command execution status and progress
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- Displays command output in formatted view
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- Handles error messages and exceptions
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- Supports copy/paste of results
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## Usage
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### Basic Command Syntax
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<command> [parameters]
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### Common Commands
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- `help` - Display available commands
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- `clear` - Clear the results display
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- `exit` - Close the command processor
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- `history` - Show command history
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### Parameters
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- String parameters should be quoted: `"example"`
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- Multiple parameters separated by spaces
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- Optional parameters in square brackets: `[param]`
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- Required parameters in angle brackets: `<param>`
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## Events
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### Form Load
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- Initializes command processor
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- Loads command history
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- Sets up event handlers
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### Form Close
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- Saves command history
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- Cleans up resources
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- Prompts for unsaved changes
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## Error Handling
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- Invalid commands show descriptive error messages
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- Runtime errors are caught and displayed
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- Long-running commands can be cancelled
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- System exceptions are logged
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## Dependencies
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- Command parser library
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- Command execution engine
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- History management
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- Auto-complete provider
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## Notes
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- Commands are case-insensitive
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- History is persisted between sessions
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- Maximum 100 history entries stored
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- Auto-complete uses command history and predefined list
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## Version Differences
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### Cmdproc-1.frm
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- Basic command processing functionality
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- Simple command parsing
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- Limited error handling
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- No command history
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- No auto-complete
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### Cmdproc-2.frm
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- Added command history
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- Improved error messages
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- Basic parameter validation
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- Simple auto-complete
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- Added clear command
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### Cmdproc-3.frm
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- Enhanced parameter parsing
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- Full command history with persistence
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- Improved auto-complete suggestions
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- Added runtime error handling
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- Support for quoted strings
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### Cmdproc-4.frm (Current)
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- Advanced command processing
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- Full parameter validation
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- Comprehensive error handling
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- Command cancellation support
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- Enhanced auto-complete
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- History management with 100 entry limit
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- Case-insensitive commands
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- System exception logging
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