Class: TermUtils::Tab::Table

Inherits:
Object
  • Object
show all
Defined in:
lib/term_utils/tab.rb

Overview

Represents a table.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opts = {}) ⇒ Table

Returns a new instance of Table.

Parameters:

  • opts (Hash) (defaults to: {})

Options Hash (opts):

  • :id (Symbol)
  • :offset (Integer)
  • :column_defaults (Hash) 


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# File 'lib/term_utils/tab.rb', line 128

def initialize(opts = {})
  opts = TermUtils::Tab.init_table_props.merge(opts)
  @id = opts.fetch(:id, nil)
  @offset = opts.fetch(:offset)
  @column_separator_width = opts.fetch(:column_separator_width)
  @column_defaults = opts.key?(:column_defaults) ? opts[:column_defaults].dup : TermUtils::Tab.default_column_props
  @columns = []
end

Instance Attribute Details

#column_defaults ⇒ Hash

Returns ‘:width`, `:align`, `:fixed`, `:ellipsis`, `:format`.

Returns:

  • (Hash) —

    ‘:width`, `:align`, `:fixed`, `:ellipsis`, `:format`.



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# File 'lib/term_utils/tab.rb', line 120

def column_defaults
  @column_defaults
end

#column_separator_width ⇒ Integer

Returns:

  • (Integer) 


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# File 'lib/term_utils/tab.rb', line 118

def column_separator_width
  @column_separator_width
end

#columns ⇒ Array<Tab::Column>

Returns:



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# File 'lib/term_utils/tab.rb', line 122

def columns
  @columns
end

#id ⇒ Symbol

Returns:

  • (Symbol) 


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# File 'lib/term_utils/tab.rb', line 114

def id
  @id
end

#offset ⇒ Integer

Returns:

  • (Integer) 


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# File 'lib/term_utils/tab.rb', line 116

def offset
  @offset
end

Instance Method Details

#define_column(id, opts = {}, &block) ⇒ Tab::Column

Defines a column.

Parameters:

  • id (Symbol)
  • opts (Hash) (defaults to: {})

Options Hash (opts):

  • :width (Integer)
  • :align (Symbol)
  • :fixed (Boolean)
  • :ellipsis (String)
  • :format (Proc, String, nil)

Returns:



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# File 'lib/term_utils/tab.rb', line 163

def define_column(id, opts = {}, &block)
  col = @columns.find { |c| c.id == id }
  if col
    block&.call(col)
    col.validate
  else
    opts[:id] = id
    opts[:index] = @columns.length
    col = Column.new(@column_defaults.merge(opts))
    block&.call(col)
    col.validate
    @columns << col
  end
  col
end

#find_column(id) ⇒ Tab::Column?

Finds a column.

Parameters:

  • id (Symbol)

Returns:



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# File 'lib/term_utils/tab.rb', line 182

def find_column(id)
  @columns.find { |c| c.id == id }
end

#print_data(io, values, opts = {}) ⇒ nil

Prints a data row.

Parameters:

  • io (#puts)
  • values (Array<Object>, Hash<Symbol, Object>)
  • opts (Hash) (defaults to: {})

Options Hash (opts):

  • :offset (Integer)
  • :column_separator_width (Integer)

Returns:

  • (nil)

Raises:



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# File 'lib/term_utils/tab.rb', line 237

def print_data(io, values, opts = {})
  vals = values
  if values.is_a? Hash
    vals = []
    @columns.each do |col|
      vals << values[col.id]
    end
  end
  raise TermUtils::Tab::TableError, 'wrong values (not array)' unless vals.is_a? Array

  offset = opts.fetch(:offset)
  column_separator_width = opts.fetch(:column_separator_width)
  sb = StringIO.new
  sb << ' ' * offset if offset.positive?
  @columns.each do |col|
    sb << ' ' * column_separator_width if col.index.positive?
    sb << col.render_data(vals[col.index])
  end
  io.puts sb.string
end

#print_header(io, values = nil, opts = {}) ⇒ nil

Prints a header row.

Parameters:

  • io (#puts)
  • values (Array<Object>, Hash<Symbol, Object>) (defaults to: nil)
  • opts (Hash) (defaults to: {})

Options Hash (opts):

  • :offset (Integer)
  • :column_separator_width (Integer)

Returns:

  • (nil)

Raises:



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# File 'lib/term_utils/tab.rb', line 206

def print_header(io, values = nil, opts = {})
  vals = values
  if values.nil?
    vals = @columns.map { |col| col.header.title }
  elsif values.is_a? Hash
    vals = []
    @columns.each do |col|
      vals << values[col.id]
    end
  end
  raise TermUtils::Tab::TableError, 'wrong values (not array)' unless vals.is_a? Array

  offset = opts.fetch(:offset)
  column_separator_width = opts.fetch(:column_separator_width)
  sb = StringIO.new
  sb << ' ' * offset if offset.positive?
  @columns.each do |col|
    sb << ' ' * column_separator_width if col.index.positive?
    sb << col.render_header(vals[col.index])
  end
  io.puts sb.string
end

#print_separator(io, opts = {}) ⇒ nil

Prints a separator row.

Parameters:

  • io (#puts)
  • opts (Hash) (defaults to: {})

Options Hash (opts):

  • :offset (Integer)
  • :column_separator_width (Integer)

Returns:

  • (nil) 


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# File 'lib/term_utils/tab.rb', line 264

def print_separator(io, opts = {})
  offset = opts.fetch(:offset)
  column_separator_width = opts.fetch(:column_separator_width)
  sb = StringIO.new
  sb << ' ' * offset if offset.positive?
  @columns.each do |col|
    sb << ' ' * column_separator_width if col.index.positive?
    sb << '-' * col.width
  end
  io.puts sb.string
end

#printer(io, opts = {}, &block) ⇒ Tab::Printer

Creates a new table printer.

Parameters:

  • io (#puts)
  • opts (Hash) (defaults to: {})

Options Hash (opts):

  • :offset (Integer)
  • :column_separator_width (Integer)

Returns:



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# File 'lib/term_utils/tab.rb', line 192

def printer(io, opts = {}, &block)
  ptr = Printer.new(self, io, props.merge(opts))
  block&.call(ptr)
  ptr
end

#props ⇒ Hash

Returns the properties of this one.

Returns:

  • (Hash) 


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# File 'lib/term_utils/tab.rb', line 139

def props
  { offset: @offset, column_separator_width: @column_separator_width }
end

#set_column_defaults(opts = {}) ⇒ Object

Sets column default properties.

Parameters:

  • opts (Hash) (defaults to: {})

Options Hash (opts):

  • :width (Integer)
  • :align (Symbol)
  • :fixed (Boolean)
  • :ellipsis (String)
  • :format (Proc, String, nil) 


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# File 'lib/term_utils/tab.rb', line 150

def set_column_defaults(opts = {})
  TermUtils::Tab.assign_column_props(@column_defaults, opts)
end

#titles ⇒ Hash<Symbol, String>

Returns column titles.

Returns:

  • (Hash<Symbol, String>) 


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# File 'lib/term_utils/tab.rb', line 278

def titles
  h = {}
  @columns.each do |col|
    h[col.id] = col.id.to_s
  end
  h
end