Class: HtmlGrid::Grid

Inherits:
Object
  • Object
show all
Defined in:
lib/htmlgrid/grid.rb

Defined Under Namespace

Classes: Row

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(attributes = {}) ⇒ Grid

Grid



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# File 'lib/htmlgrid/grid.rb', line 188

def initialize(attributes = {})
  @height = 1
  @width = 1
  @rows = [Row.new]
  @attributes = {
    "cellspacing" => "0"
  }.update(attributes)
end

Instance Attribute Details

#height ⇒ Object

Returns the value of attribute height.



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# File 'lib/htmlgrid/grid.rb', line 29

def height
  @height
end

#width ⇒ Object

Returns the value of attribute width.



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# File 'lib/htmlgrid/grid.rb', line 29

def width
  @width
end

Instance Method Details

#[](x, y) ⇒ Object 



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# File 'lib/htmlgrid/grid.rb', line 329

def [](x, y)
  @rows[y][x]
rescue
  nil
end

#add(arg, x, y, col = false) ⇒ Object 



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# File 'lib/htmlgrid/grid.rb', line 208

def add(arg, x, y, col = false)
  if arg.is_a?(Enumerable)
    if arg.is_a?(String)
      add_field(arg, x, y)
    elsif arg.is_a?(Array)
      arg.each do |item|
        add_field(item, x || "", y)
      end
    elsif col
      add_column(arg, x, y)
    else
      add_row(arg, x, y)
    end
  else
    add_field(arg, x, y)
  end
end

#add_attribute(key, value, x, y, w = 1, h = 1) ⇒ Object 



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# File 'lib/htmlgrid/grid.rb', line 226

def add_attribute(key, value, x, y, w = 1, h = 1)
  each_field(x, y, w, h) { |field|
    field.add_attribute(key, value)
  }
end

#add_background(x, y, w = 1, h = 1) ⇒ Object 



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# File 'lib/htmlgrid/grid.rb', line 232

def add_background(x, y, w = 1, h = 1)
  each_field(x, y, w, h) { |field|
    field.add_background(x, w)
  }
end

#add_column(arg, x, y) ⇒ Object 



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# File 'lib/htmlgrid/grid.rb', line 238

def add_column(arg, x, y)
  offset = 0
  arg.each do |item|
    add_field(item, x, y + offset)
    offset = offset.next
  end
end

#add_component_style(style, x, y, w = 1, h = 1) ⇒ Object 



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# File 'lib/htmlgrid/grid.rb', line 246

def add_component_style(style, x, y, w = 1, h = 1)
  each_field(x, y, w, h) { |field|
    field.add_component_style(style)
  }
end

#add_field(arg, x, y) ⇒ Object 



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# File 'lib/htmlgrid/grid.rb', line 252

def add_field(arg, x, y)
  initialize_grid(x + 1, y + 1)
  (@rows[y] ||= Row.new).add(arg, x)
end

#add_row(arg, x, y) ⇒ Object 



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# File 'lib/htmlgrid/grid.rb', line 257

def add_row(arg, x, y)
  offset = 0
  arg.each do |item|
    add_field(item, x + offset, y)
    offset = offset.next
  end
end

#add_style(style, x, y, w = 1, h = 1) ⇒ Object 



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# File 'lib/htmlgrid/grid.rb', line 265

def add_style(style, x, y, w = 1, h = 1)
  each_field(x, y, w, h) { |field|
    field.add_style(style)
  }
end

#add_tag(tag, x, y, w = 1, h = 1) ⇒ Object 



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# File 'lib/htmlgrid/grid.rb', line 271

def add_tag(tag, x, y, w = 1, h = 1)
  initialize_grid(x + w, y + h)
  each_field(x, y, w, h) { |field|
    field.tag = tag
  }
end

#each_field(x, y, w = 1, h = 1) ⇒ Object 



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# File 'lib/htmlgrid/grid.rb', line 278

def each_field(x, y, w = 1, h = 1)
  y.upto([y + h, @height].min - 1) { |yy|
    @rows[yy].each_field(x, w) { |field|
      yield(field)
    }
  }
end

#field_attribute(key, x = 0, y = 0) ⇒ Object 



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# File 'lib/htmlgrid/grid.rb', line 286

def field_attribute(key, x = 0, y = 0)
  @rows[y].field_attribute(key, x)
end

#initialize_grid(w, h) ⇒ Object 



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# File 'lib/htmlgrid/grid.rb', line 197

def initialize_grid(w, h)
  if w > @width || h > @height
    floor = w > @width ? 0 : @height
    @width = [w, @width].max
    @height = [h, @height].max
    floor.upto(@height - 1) { |ii|
      (@rows[ii] ||= Row.new).initialize_row(@width)
    }
  end
end

#insert_row(y = 0, arg = nil) ⇒ Object 



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# File 'lib/htmlgrid/grid.rb', line 290

def insert_row(y = 0, arg = nil)
  @rows[y, 0] = Row.new
  @height += 1
  add(arg, 0, y)
end

#push(arg, x = 0, y = height) ⇒ Object 



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# File 'lib/htmlgrid/grid.rb', line 296

def push(arg, x = 0, y = height)
  add(arg, x, y)
  set_colspan(x, y)
end

#set_attribute(key, value) ⇒ Object 



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# File 'lib/htmlgrid/grid.rb', line 301

def set_attribute(key, value)
  @attributes[key] = value
end

#set_attributes(hash) ⇒ Object 



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# File 'lib/htmlgrid/grid.rb', line 305

def set_attributes(hash)
  @attributes.update(hash)
end

#set_colspan(x = 0, y = 0, span = (@width - x)) ⇒ Object 



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# File 'lib/htmlgrid/grid.rb', line 309

def set_colspan(x = 0, y = 0, span = (@width - x))
  span = span.to_i
  initialize_grid(x + span, y + 1)
  self[x, y].colspan = span
end

#set_row_attributes(attr = {}, y = 0, offset = 0) ⇒ Object 



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# File 'lib/htmlgrid/grid.rb', line 315

def set_row_attributes(attr = {}, y = 0, offset = 0)
  # TODO
  # At the moment, offset value is not used
  # But probably offset value is used in grid.c
  initialize_grid(offset, y + 1)
  @rows[y].set_attributes(attr)
end

#to_html(cgi) ⇒ Object 



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# File 'lib/htmlgrid/grid.rb', line 323

def to_html(cgi)
  cgi.table(@attributes) {
    @rows.collect { |row| row.to_html(cgi).force_encoding("utf-8") }.join
  }
end