Class: Ea::Diagram::Configuration

Inherits:
Object
  • Object
show all
Defined in:
lib/ea/diagram/configuration.rb

Overview

Configuration management for diagram styling

This class provides hierarchical style resolution with the following priority:

  1. EA Data (QEA/XMI) - Highest priority
  2. Class-specific overrides (user config)
  3. Package-based styling (wildcard support)
  4. Stereotype-based styling
  5. Global defaults - Lowest priority

Examples:

config = Configuration.new("config/diagram_styles.yml")
fill_color = config.style_for(element, "colors.fill")
font_family = config.style_for(element, "fonts.class_name.family")

Constant Summary collapse

DEFAULT_CONFIG_PATHS =

Default configuration file paths in order of preference

[
  "config/diagram_styles.yml",
  File.expand_path("~/.lutaml/diagram_styles.yml"),
].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config_path = nil) ⇒ Configuration

Initialize configuration with optional custom path

Parameters:

  • config_path (String, nil) (defaults to: nil) —

    Path to custom configuration file



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# File 'lib/ea/diagram/configuration.rb', line 33

def initialize(config_path = nil)
  @config_data = load_configuration(config_path)
end

Instance Attribute Details

#config_data ⇒ Object (readonly)

Returns the value of attribute config_data.



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# File 'lib/ea/diagram/configuration.rb', line 22

def config_data
  @config_data
end

Instance Method Details

#connector_style(connector_type, property) ⇒ Object

Get connector style

Type of connector (generalization, association, etc.)

Parameters:

  • connector_type (String)
  • property (String) —

    Style property path

Returns:

  • (Object) —

    Style value



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# File 'lib/ea/diagram/configuration.rb', line 106

def connector_style(connector_type, property)
  dig_config("connectors.#{connector_type}.#{property}")
end

#deep_merge(hash1, hash2) ⇒ Hash

Deep merge two hashes

Parameters:

  • hash1 (Hash) —

    Base hash

  • hash2 (Hash) —

    Hash to merge in

Returns:

  • (Hash) —

    Merged hash



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# File 'lib/ea/diagram/configuration.rb', line 164

def deep_merge(hash1, hash2)
  hash1.merge(hash2) do |_key, old_val, new_val|
    if old_val.is_a?(Hash) && new_val.is_a?(Hash)
      deep_merge(old_val, new_val)
    else
      new_val
    end
  end
end

#dig_hash(hash, path) ⇒ Object

Navigate hash using dot notation

Parameters:

  • hash (Hash) —

    Hash to navigate

  • path (String) —

    Path with dot notation

Returns:

  • (Object) —

    Value at path



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# File 'lib/ea/diagram/configuration.rb', line 129

def dig_hash(hash, path) # rubocop:disable Metrics/CyclomaticComplexity
  return nil if path.nil? || path.empty?
  return nil unless hash.is_a?(Hash)

  keys = path.split(".")
  return nil if keys.empty?

  keys.reduce(hash) do |h, key|
    return nil unless h.is_a?(Hash)

    h[key]
  end
end

#legend_config ⇒ Hash

Get legend configuration

Returns:

  • (Hash) —

    Legend configuration



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# File 'lib/ea/diagram/configuration.rb', line 113

def legend_config
  config_data["legend"] || {}
end

#matches_package?(package_name, pattern) ⇒ Boolean

Check if package name matches pattern (supports wildcards)

Parameters:

  • package_name (String) —

    Package name to test

  • pattern (String) —

    Pattern with wildcards (e.g., "CityGML::*")

Returns:

  • (Boolean) —

    True if matches



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# File 'lib/ea/diagram/configuration.rb', line 148

def matches_package?(package_name, pattern)
  return false unless package_name && pattern

  # Support wildcards: "CityGML::*" matches "CityGML::Core"
  regex_pattern = pattern.gsub("*", ".*")
  Regexp.new("^#{regex_pattern}$").match?(package_name)
rescue RegexpError => e
  warn "Warning: Invalid package pattern '#{pattern}': #{e.message}"
  false
end

#style_for(element, property) ⇒ Object

Get style for a specific element

Parameters:

  • element (Lutaml::Uml::TopElement, Object) —

    UML element

  • property (String) —

    Style property path (e.g., "colors.fill")

Returns:

  • (Object) —

    Style value



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# File 'lib/ea/diagram/configuration.rb', line 42

def style_for(element, property) # rubocop:disable Metrics/AbcSize,Metrics/CyclomaticComplexity,Metrics/MethodLength,Metrics/PerceivedComplexity
  return nil if property.nil? || property.empty?

  # Priority: Class-specific > Package > Stereotype > Defaults
  value = nil

  # 1. Try class-specific override (highest priority)
  if element.is_a?(Lutaml::Uml::TopElement) && element.name
    class_config = dig_config("classes.#{element.name}.#{property}")
    value = class_config if class_config
  end

  # 2. Try package-based styling
  if !value &&
      element.is_a?(Lutaml::Uml::Diagram) && element.package_name
    # Support wildcards: "CityGML::*"
    package_configs = config_data["packages"] || {}
    package_configs.each do |pattern, pkg_config|
      if matches_package?(element.package_name, pattern)
        pkg_value = dig_hash(pkg_config, property)
        value = pkg_value if pkg_value
        break
      end
    end
  end

  # 3. Try stereotype-based styling
  if !value && element.is_a?(Lutaml::Uml::TopElement) && element.stereotype
    stereotypes = Array(element.stereotype)
    stereotypes.each do |stereo|
      stereo_value = dig_config("stereotypes.#{stereo}.#{property}")
      if stereo_value
        value = stereo_value
        break
      end
    end
  end

  # 4. Fall back to defaults (lowest priority)
  # Handle property name aliases
  # (e.g., "colors.fill" -> "colors.default_fill")
  unless value
    value = dig_config("defaults.#{property}")

    # If not found, try with "default_" prefix for certain properties
    unless value
      if property.start_with?("colors.fill")
        value = dig_config("defaults.colors.default_fill")
      elsif property.start_with?("colors.stroke") &&
          !property.include?("stroke_")
        value = dig_config("defaults.colors.default_stroke")
      end
    end
  end

  value
end

#to_h ⇒ Hash

Get the entire configuration data

Returns:

  • (Hash) —

    Complete configuration data



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# File 'lib/ea/diagram/configuration.rb', line 120

def to_h
  config_data
end