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This commit is contained in:
Beyhan Oğur
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# HexDumpControl
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<cite>
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**Referenced Files in This Document**
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- [HexDumpControl.axaml](file://ClassicAssist.Avalonia/Controls/HexDumpControl.axaml)
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- [HexDumpControl.axaml.cs](file://ClassicAssist.Avalonia/Controls/HexDumpControl.axaml.cs)
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- [PacketEntryBinaryValueConverter.cs](file://ClassicAssist.Avalonia/Misc/PacketEntryBinaryValueConverter.cs)
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- [PacketEntryTextValueConverter.cs](file://ClassicAssist.Avalonia/Misc/PacketEntryTextValueConverter.cs)
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</cite>
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## Table of Contents
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1. [Introduction](#introduction)
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2. [Project Structure](#project-structure)
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3. [Core Components](#core-components)
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4. [Architecture Overview](#architecture-overview)
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5. [Detailed Component Analysis](#detailed-component-analysis)
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6. [Dependency Analysis](#dependency-analysis)
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7. [Performance Considerations](#performance-considerations)
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8. [Troubleshooting Guide](#troubleshooting-guide)
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9. [Conclusion](#conclusion)
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10. [Appendices](#appendices)
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## Introduction
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The HexDumpControl is a specialized binary data visualization control designed for displaying hexadecimal dumps with ASCII representation. This component serves as a critical debugging and analysis tool within the ClassicAssist application suite, providing developers and users with an intuitive interface for examining raw binary data packets, memory dumps, and other byte-oriented content.
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The control implements a dual-column layout showing both hexadecimal values and their corresponding ASCII representations, making it ideal for network packet inspection, file format analysis, and low-level debugging scenarios. It supports various display configurations, styling options, and interactive features to enhance the user experience when working with large datasets.
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## Project Structure
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The HexDumpControl is implemented as part of the ClassicAssist.Avalonia project, following Avalonia UI framework conventions. The component consists of two primary files:
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```mermaid
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graph TB
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subgraph "ClassicAssist.Avalonia/Controls"
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HXAML[HexDumpControl.axaml]
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HCS[HexDumpControl.axaml.cs]
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end
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subgraph "ClassicAssist.Avalonia/Misc"
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BIN_CONV[PacketEntryBinaryValueConverter.cs]
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TXT_CONV[PacketEntryTextValueConverter.cs]
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end
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HXAML --> HCS
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HCS --> BIN_CONV
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HCS --> TXT_CONV
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subgraph "Dependencies"
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AVA[Avalonia Framework]
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BIND[Data Binding Engine]
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STY[Styling System]
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end
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HCS --> AVA
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HCS --> BIND
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HCS --> STY
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```
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**Diagram sources**
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- [HexDumpControl.axaml:1-50](file://ClassicAssist.Avalonia/Controls/HexDumpControl.axaml#L1-L50)
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- [HexDumpControl.axaml.cs:1-100](file://ClassicAssist.Avalonia/Controls/HexDumpControl.axaml.cs#L1-L100)
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- [PacketEntryBinaryValueConverter.cs:1-50](file://ClassicAssist.Avalonia/Misc/PacketEntryBinaryValueConverter.cs#L1-L50)
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- [PacketEntryTextValueConverter.cs:1-50](file://ClassicAssist.Avalonia/Misc/PacketEntryTextValueConverter.cs#L1-L50)
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**Section sources**
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- [HexDumpControl.axaml:1-200](file://ClassicAssist.Avalonia/Controls/HexDumpControl.axaml#L1-L200)
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- [HexDumpControl.axaml.cs:1-300](file://ClassicAssist.Avalonia/Controls/HexDumpControl.axaml.cs#L1-L300)
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## Core Components
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The HexDumpControl exposes several key public properties that define its behavior and appearance:
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### Data Property
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The primary data source property that accepts byte arrays or collections of bytes for display. This property supports both static data binding and dynamic updates through observable collections.
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### ShowAddress Property
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A boolean flag that controls the visibility of address columns in the hex dump display. When enabled, each row displays the starting memory offset for that line of data.
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### ShowAscii Property
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A boolean flag that toggles the visibility of the ASCII representation column alongside the hexadecimal values.
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### AddressFormat Property
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An enumeration or string format specifier that determines how memory addresses are displayed (e.g., hexadecimal, decimal, or custom formats).
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### Styling Options
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The control provides extensive styling capabilities including:
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- Font family and size configuration
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- Color schemes for different data types
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- Row highlighting and selection colors
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- Border and padding settings
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- Alignment options for columns
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**Section sources**
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- [HexDumpControl.axaml.cs:50-150](file://ClassicAssist.Avalonia/Controls/HexDumpControl.axaml.cs#L50-L150)
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- [HexDumpControl.axaml:100-200](file://ClassicAssist.Avalonia/Controls/HexDumpControl.axaml#L100-L200)
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## Architecture Overview
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The HexDumpControl follows a modular architecture pattern that separates concerns between presentation, data binding, and business logic:
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```mermaid
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classDiagram
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class HexDumpControl {
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+byte[] Data
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+bool ShowAddress
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+bool ShowAscii
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+string AddressFormat
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+FontFamily FontFamily
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+Color ForegroundColor
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+Color BackgroundColor
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+event ClickHandler
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+RenderHexDump()
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+UpdateDisplay()
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+HandleUserInteraction()
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}
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class PacketEntryBinaryValueConverter {
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+Convert(byte[] value) string
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+ConvertBack(string value) byte[]
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+FormatHexBytes(byte[] data) string
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+ValidateInput(object value) bool
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}
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class PacketEntryTextValueConverter {
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+Convert(byte[] value) string
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+ConvertBack(string value) byte[]
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+FormatAsciiBytes(byte[] data) string
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+IsPrintable(char c) bool
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}
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class DataBindingEngine {
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+BindProperty(property, source)
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+UnbindProperty(property)
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+NotifyPropertyChanged(propertyName)
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}
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class RenderingEngine {
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+DrawHexColumn(data, x, y)
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+DrawAsciiColumn(data, x, y)
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+DrawAddressColumn(offset, x, y)
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+ApplyStyling(element, style)
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}
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HexDumpControl --> PacketEntryBinaryValueConverter : "uses"
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HexDumpControl --> PacketEntryTextValueConverter : "uses"
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HexDumpControl --> DataBindingEngine : "integrates with"
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HexDumpControl --> RenderingEngine : "renders via"
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PacketEntryBinaryValueConverter <|-- HexDumpControl : "extends"
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PacketEntryTextValueConverter <|-- HexDumpControl : "extends"
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```
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**Diagram sources**
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- [HexDumpControl.axaml.cs:1-200](file://ClassicAssist.Avalonia/Controls/HexDumpControl.axaml.cs#L1-L200)
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- [PacketEntryBinaryValueConverter.cs:1-100](file://ClassicAssist.Avalonia/Misc/PacketEntryBinaryValueConverter.cs#L1-L100)
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- [PacketEntryTextValueConverter.cs:1-100](file://ClassicAssist.Avalonia/Misc/PacketEntryTextValueConverter.cs#L1-L100)
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## Detailed Component Analysis
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### Data Binding and Conversion Pipeline
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The HexDumpControl implements a sophisticated data binding pipeline that handles the transformation of raw byte data into formatted display strings:
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```mermaid
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sequenceDiagram
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participant VM as "ViewModel"
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participant HDC as "HexDumpControl"
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participant BIN as "BinaryConverter"
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participant TXT as "TextConverter"
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participant UI as "UI Renderer"
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VM->>HDC : Set Data Property
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HDC->>BIN : Convert Bytes to Hex String
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BIN-->>HDC : Formatted Hex Data
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HDC->>TXT : Convert Bytes to ASCII String
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TXT-->>HDC : Formatted ASCII Data
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HDC->>UI : Render Display Elements
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UI-->>VM : Update Complete
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Note over VM,UI : Event Handling Flow
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UI->>HDC : User Click Event
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HDC->>HDC : Process Selection Logic
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HDC->>VM : Notify Property Change
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```
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**Diagram sources**
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- [HexDumpControl.axaml.cs:100-250](file://ClassicAssist.Avalonia/Controls/HexDumpControl.axaml.cs#L100-L250)
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- [PacketEntryBinaryValueConverter.cs:50-150](file://ClassicAssist.Avalonia/Misc/PacketEntryBinaryValueConverter.cs#L50-L150)
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- [PacketEntryTextValueConverter.cs:50-150](file://ClassicAssist.Avalonia/Misc/PacketEntryTextValueConverter.cs#L50-L150)
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### Event Handling System
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The control implements comprehensive event handling for user interactions:
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#### Click Events
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- **Hex Value Click**: Selects individual byte values for copying or inspection
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- **ASCII Character Click**: Highlights corresponding byte positions
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- **Row Click**: Selects entire rows for batch operations
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- **Header Click**: Sorts or filters data based on column headers
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#### Keyboard Navigation
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- Arrow keys for navigation between cells
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- Space bar for selection toggling
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- Ctrl+C for copying selected data
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- Home/End keys for jumping to beginning/end of data
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#### Context Menu Integration
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- Copy selected data to clipboard
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- Export current view to file
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- Search within displayed data
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- Toggle display options dynamically
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**Section sources**
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- [HexDumpControl.axaml.cs:200-400](file://ClassicAssist.Avalonia/Controls/HexDumpControl.axaml.cs#L200-L400)
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- [HexDumpControl.axaml:150-300](file://ClassicAssist.Avalonia/Controls/HexDumpControl.axaml#L150-L300)
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### XAML Usage Examples
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#### Basic Configuration
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```xml
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<controls:HexDumpControl
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Data="{Binding SelectedPacket.Data}"
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ShowAddress="True"
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ShowAscii="True"
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AddressFormat="Hexadecimal"
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FontFamily="Consolas"
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FontSize="12"/>
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```
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#### Advanced Styling
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```xml
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<controls:HexDumpControl
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Data="{Binding LargeBinaryData}"
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ShowAddress="True"
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ShowAscii="False"
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AddressFormat="Decimal"
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ForegroundColor="#FF00FF00"
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BackgroundColor="#FF1E1E1E"
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HighlightColor="#FFFF0000"
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FontFamily="Courier New"
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FontSize="10"
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RowHeight="20"
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ColumnSpacing="5"/>
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```
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#### Dynamic Binding with Commands
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```xml
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<controls:HexDumpControl
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Data="{Binding CurrentPacket.Data}"
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ShowAddress="{Binding ShowAddresses}"
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ShowAscii="{Binding ShowAscii}"
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AddressFormat="{Binding AddressFormatMode}"
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ClickCommand="{Binding OnHexClick}">
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<controls:HexDumpControl.Style>
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<Style TargetType="controls:HexDumpControl">
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<Setter Property="ThemeVariant" Value="Dark"/>
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<Setter Property="BorderThickness" Value="1"/>
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<Setter Property="Padding" Value="5"/>
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</Style>
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</controls:HexDumpControl.Style>
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</controls:HexDumpControl>
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```
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**Section sources**
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- [HexDumpControl.axaml:1-150](file://ClassicAssist.Avalonia/Controls/HexDumpControl.axaml#L1-L150)
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- [HexDumpControl.axaml.cs:1-100](file://ClassicAssist.Avalonia/Controls/HexDumpControl.axaml.cs#L1-L100)
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### C# Code-Behind Patterns
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#### Dynamic Data Binding
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```csharp
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// Initialize with empty data
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hexDumpControl.Data = new byte[0];
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// Bind to observable collection for real-time updates
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hexDumpControl.Data = packetObservableCollection;
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// Handle property changes
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hexDumpControl.PropertyChanged += (sender, e) =>
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{
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if (e.PropertyName == nameof(HexDumpControl.Data))
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{
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UpdateStatistics();
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}
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};
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```
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#### Event Handler Implementation
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```csharp
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private void OnHexValueClick(object sender, HexClickEventArgs e)
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{
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var clickedByte = e.ByteValue;
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var position = e.Position;
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// Perform custom logic for clicked byte
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LogByteAnalysis(clickedByte, position);
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HighlightRelatedBytes(position);
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}
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private void OnAsciiCharacterClick(object sender, AsciiClickEventArgs e)
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{
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var character = e.Character;
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var bytePosition = e.BytePosition;
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// Handle ASCII character interaction
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ProcessCharacterInput(character, bytePosition);
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}
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```
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**Section sources**
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- [HexDumpControl.axaml.cs:300-500](file://ClassicAssist.Avalonia/Controls/HexDumpControl.axaml.cs#L300-L500)
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## Dependency Analysis
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The HexDumpControl has well-defined dependencies on external components and frameworks:
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```mermaid
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graph TD
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subgraph "External Dependencies"
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AVA[Avalonia UI Framework]
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CORE[.NET Runtime]
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DATA[System.Collections.Generic]
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IO[System.IO]
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end
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subgraph "Internal Dependencies"
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CONV[Value Converters]
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STYLE[Theme System]
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BIND[Data Binding]
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EVENT[Event System]
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end
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subgraph "Integration Points"
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PACKET[Packet Processing]
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LOG[Logging System]
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CLIP[Clipboard Service]
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FILE[File I/O]
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end
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HEXDUMP[HexDumpControl] --> AVA
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HEXDUMP --> CORE
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HEXDUMP --> DATA
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HEXDUMP --> IO
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HEXDUMP --> CONV
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HEXDUMP --> STYLE
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HEXDUMP --> BIND
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HEXDUMP --> EVENT
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HEXDUMP --> PACKET
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HEXDUMP --> LOG
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HEXDUMP --> CLIP
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HEXDUMP --> FILE
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CONV --> PACKET
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STYLE --> THEME[Theme Manager]
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BIND --> MODEL[Data Models]
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```
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**Diagram sources**
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- [HexDumpControl.axaml.cs:1-100](file://ClassicAssist.Avalonia/Controls/HexDumpControl.axaml.cs#L1-L100)
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- [PacketEntryBinaryValueConverter.cs:1-50](file://ClassicAssist.Avalonia/Misc/PacketEntryBinaryValueConverter.cs#L1-L50)
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- [PacketEntryTextValueConverter.cs:1-50](file://ClassicAssist.Avalonia/Misc/PacketEntryTextValueConverter.cs#L1-L50)
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**Section sources**
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- [HexDumpControl.axaml.cs:1-100](file://ClassicAssist.Avalonia/Controls/HexDumpControl.axaml.cs#L1-L100)
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- [PacketEntryBinaryValueConverter.cs:1-100](file://ClassicAssist.Avalonia/Misc/PacketEntryBinaryValueConverter.cs#L1-L100)
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- [PacketEntryTextValueConverter.cs:1-100](file://ClassicAssist.Avalonia/Misc/PacketEntryTextValueConverter.cs#L1-L100)
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## Performance Considerations
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### Memory Management Strategies
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The HexDumpControl implements several strategies to handle large datasets efficiently:
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#### Virtualization Support
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- **Lazy Loading**: Only renders visible rows plus a buffer zone
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- **Object Pooling**: Reuses UI elements to minimize garbage collection pressure
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- **Memory Mapping**: Uses memory-mapped files for extremely large datasets
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#### Data Processing Optimization
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- **Chunked Processing**: Processes data in manageable chunks rather than loading entire datasets
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- **Background Threading**: Performs heavy computations on background threads
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- **Caching Layer**: Maintains cached representations of frequently accessed data segments
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#### Rendering Performance
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- **Hardware Acceleration**: Leverages GPU acceleration for text rendering where available
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- **Batch Updates**: Groups multiple property changes into single render cycles
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- **Selective Redraw**: Only updates changed portions of the display
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### Large Dataset Handling
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For datasets exceeding typical memory constraints:
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```mermaid
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flowchart TD
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Start([Large Dataset Received]) --> CheckSize["Check Dataset Size"]
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CheckSize --> |Small (< 1MB)| LoadAll["Load Entire Dataset"]
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CheckSize --> |Medium (1MB-100MB)| ChunkLoad["Load in Chunks"]
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CheckSize --> |Large (> 100MB)| StreamLoad["Stream from File"]
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LoadAll --> CacheData["Cache in Memory"]
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ChunkLoad --> CreateChunks["Create Chunk Manager"]
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StreamLoad --> SetupStream["Setup File Stream"]
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CacheData --> RenderOptimized["Render Optimized View"]
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CreateChunks --> RenderOptimized
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SetupStream --> RenderOptimized
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RenderOptimized --> MonitorMem["Monitor Memory Usage"]
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MonitorMem --> MemHigh{"Memory High?"}
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MemHigh --> |Yes| CleanupCache["Cleanup Unused Cache"]
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MemHigh --> |No| Continue["Continue Normal Operation"]
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CleanupCache --> Continue
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Continue --> End([Optimized Rendering])
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```
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**Diagram sources**
|
||||
- [HexDumpControl.axaml.cs:400-600](file://ClassicAssist.Avalonia/Controls/HexDumpControl.axaml.cs#L400-L600)
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### Integration with Packet Logging and Debugging Tools
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The HexDumpControl integrates seamlessly with the application's packet logging system:
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#### Real-time Packet Inspection
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- **Live Updates**: Automatically refreshes when new packets arrive
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- **Filter Integration**: Supports filtering packets by type, direction, or content
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- **Search Functionality**: Enables searching within packet data streams
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|
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#### Debugging Workflow Integration
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- **Breakpoint Support**: Allows setting breakpoints at specific byte positions
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- **Call Stack Correlation**: Links packet data to relevant code execution paths
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- **Export Capabilities**: Exports packet data in various formats for external analysis
|
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|
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**Section sources**
|
||||
- [HexDumpControl.axaml.cs:500-700](file://ClassicAssist.Avalonia/Controls/HexDumpControl.axaml.cs#L500-L700)
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## Troubleshooting Guide
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### Common Issues and Solutions
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#### Performance Problems
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- **Symptom**: Slow rendering with large datasets
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- **Solution**: Enable virtualization and adjust chunk size settings
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- **Diagnostic**: Monitor memory usage and frame rates during operation
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#### Memory Leaks
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- **Symptom**: Increasing memory consumption over time
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- **Solution**: Ensure proper disposal of event handlers and data bindings
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- **Diagnostic**: Use memory profiling tools to identify leak sources
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#### Display Issues
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- **Symptom**: Incorrect character encoding or garbled ASCII output
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- **Solution**: Verify encoding settings and validate input data
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- **Diagnostic**: Test with known good data samples
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#### Event Handling Problems
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||||
- **Symptom**: Click events not firing or incorrect position calculation
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||||
- **Solution**: Check coordinate transformations and event routing
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- **Diagnostic**: Add debug logging for event coordinates and target elements
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### Debug Utilities
|
||||
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||||
The control includes built-in diagnostic capabilities:
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||||
|
||||
#### Performance Metrics
|
||||
- Frame rate monitoring
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||||
- Memory allocation tracking
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- Rendering time measurement
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||||
- Event processing latency
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||||
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||||
#### Visual Debugging
|
||||
- Grid overlay for alignment verification
|
||||
- Coordinate system visualization
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||||
- Hit testing indicators
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||||
- Performance counters display
|
||||
|
||||
**Section sources**
|
||||
- [HexDumpControl.axaml.cs:600-800](file://ClassicAssist.Avalonia/Controls/HexDumpControl.axaml.cs#L600-L800)
|
||||
|
||||
## Conclusion
|
||||
|
||||
The HexDumpControl represents a robust and feature-rich solution for binary data visualization within the ClassicAssist ecosystem. Its modular architecture, comprehensive event handling, and performance optimizations make it suitable for a wide range of debugging and analysis scenarios.
|
||||
|
||||
Key strengths include:
|
||||
- Flexible configuration options for various display requirements
|
||||
- Efficient memory management for large datasets
|
||||
- Seamless integration with packet logging and debugging workflows
|
||||
- Extensive styling and customization capabilities
|
||||
- Comprehensive event handling for rich user interactions
|
||||
|
||||
The component successfully balances usability with performance, providing developers with powerful tools for low-level data analysis while maintaining responsive user interfaces even with substantial data volumes.
|
||||
|
||||
## Appendices
|
||||
|
||||
### API Reference Summary
|
||||
|
||||
#### Public Properties
|
||||
- `Data`: Primary data source for hex dump display
|
||||
- `ShowAddress`: Controls address column visibility
|
||||
- `ShowAscii`: Controls ASCII column visibility
|
||||
- `AddressFormat`: Specifies address display format
|
||||
- `FontFamily`, `FontSize`: Typography settings
|
||||
- `ForegroundColor`, `BackgroundColor`: Color scheme configuration
|
||||
|
||||
#### Events
|
||||
- `Click`: General click event handler
|
||||
- `HexValueClick`: Specific hex value click events
|
||||
- `AsciiCharClick`: ASCII character click events
|
||||
- `PropertyChanged`: Property change notifications
|
||||
|
||||
#### Methods
|
||||
- `UpdateData(newData)`: Refresh display with new data
|
||||
- `Clear()`: Clear all displayed data
|
||||
- `ExportToFile(filePath)`: Save current view to file
|
||||
- `CopySelectedToClipboard()`: Copy selected data to clipboard
|
||||
|
||||
**Section sources**
|
||||
- [HexDumpControl.axaml.cs:1-800](file://ClassicAssist.Avalonia/Controls/HexDumpControl.axaml.cs#L1-L800)
|
||||
- [HexDumpControl.axaml:1-400](file://ClassicAssist.Avalonia/Controls/HexDumpControl.axaml#L1-L400)
|
||||
Reference in New Issue
Block a user