Class: XmlList::XmlListDelegate

Inherits:
Object
  • Object
show all
Defined in:
lib/r4x/xmllist_delegate.rb

Instance Method Summary collapse

Constructor Details

#initialize(x) ⇒ XmlListDelegate

Returns a new instance of XmlListDelegate.



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# File 'lib/r4x/xmllist_delegate.rb', line 6

def initialize( x )
  @x = x
end

Instance Method Details

#append(v) ⇒ Object 



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# File 'lib/r4x/xmllist_delegate.rb', line 117

def append( v )
  i = @x.self.length
  n = 1
  case v
  when XmlList
    @x.__target_object = v.self.target_object
    @x.__target_property = v.self.target_property
    n = v.self.length
    return if n == 0
    (0...v.self.length).each { |i| @x[i+j] = v[j] }
  when Xml
    @x.__target_object = v.self.parent
    if v.self.class == :instruction
      @x.__target_property = nil
    else
      @x.__target_property = v.self.name
    end
    @x[i] = v
    # @x.length += n
  else
    raise 'Xml or XmlList expected'
  end
end

#class ⇒ Object 



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# File 'lib/r4x/xmllist_delegate.rb', line 11

def class           ; @x.__class            ; end

#get(prop) ⇒ Object 



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# File 'lib/r4x/xmllist_delegate.rb', line 18

def get( prop )
  if prop.kind_of?(Integer)
    return @x.__list.at( prop )
  end
  l = XmlList.new( [], @x, prop )
  0...length { |i|
    gq = @x[i].self.get( prop )
    l.self.append( gq ) if gq.self.length > 0
  }
  return l
end

#length ⇒ Object 



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# File 'lib/r4x/xmllist_delegate.rb', line 159

def length
  @x.__list.length
end

#list ⇒ Object 



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# File 'lib/r4x/xmllist_delegate.rb', line 10

def list            ; @x.__list             ; end

#put(prop, v) ⇒ Object 



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# File 'lib/r4x/xmllist_delegate.rb', line 30

def put( prop, v )
  if prop.kind_of?(Integer)
    i = prop
    if @x.__target_object
      r = @x.__target_object.self.resolve_value
      return unless r
    else
      r = nil
    end
    if i >= @x.__list.length
      if r.is_a?(XmlList)
        return if r.self.length != 1
      else
        r = r[0]
      end
      y = Xml.new( @x.__target_property.to_sym, r )
      if @x.__target_property =~ /^[@_]/
        attribute_exists = r.self.get( y.self.name )
        return if attributes_exists.self.length > 0
        y.self.class = :attribute
      elsif (!@x.__target_property) or @x.__target_property.local_name== '*'
        y.self.name = nil
        y.self.class = :text
      else
        t.self.class = :element
      end
      i = length
      if y.self.class != :attribute
        if y.self.parent
          if i > 0
            j = 0
            while ((j < (y.self.parent.self.length - 1)) and (y.self.parent[j] != @x[i-1])) do
              j += 1
            end
          else
            j = y.self.parent.self.length - 1
          end
        end
        if v.is_a?(Xml)
          y.self.name = v.slef.name
        elsif v.is_a?(XmlList)
          y.self.name = v.self.property_name
        else
          raise "invalid type"
        end
      end
      @x.self.append y
    end
    if ( !( v.is_a?(Xml) or v.is_a?(XmlList) ) or [:text, :attribute].include?(v.self.class) )
      v = v.to_s #to_String
    end
    if @x[i].self.class == :attribute
      @x[i].self.parent.self.put( x[i].self.name, v )
      attr = x[i].self.parent.self.get( x[i].self.name )
      x[i] = attr[0]
    elsif v.is_a?(XmlList)
      c = v.dup
      parent = x[i].self.parent
      if parent
        q = parent.self.index(@x[i])
        parent.self.replace( q, c )
        (0...c.self.length).each { |j| c[j] = parent[q+j] }
      end
      (c.self.length-1..i).each { |j| @x[j+c.self.length] = @x[j] }
      (0...c.self.length).each { |j| @x[i+j] = c[j] }
    elsif v.is_a?(Xml) or [:text, :comment, :instruction].include?(@x[i].self.class)
      parent = @x[i].self.parent
      if parent
        q = parent.self.index(@x[i])
        parent.self.replace( q, v )
        v = parent[q]
      end
      x[i] = v
    else
      x[i].self.put( '*', v )
    end
  else
    if length == 0
      r = @x.resolve_value
      return if !r or r.self.length != 1
      @x.self.append( r )
    end
    @x[0].self.put( prop, v )
  end
  return
end

#resolve_value ⇒ Object 



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# File 'lib/r4x/xmllist_delegate.rb', line 141

def resolve_value
  return if length > 0
  unless target_object and target_property
    if target_property =~ /^[_@]/ or target_property.local_name == '*'
      return nil
    end
  end
  base = target_object.self.resolve_value  # recursive
  return nil unless base
  target = base.self.get( target_property )
  if target.self.length == 0
    return nil if base.is_a?(XmlList) and base.self.length > 1
    base.self.put( target_property, '' )
    target = base.self.get( target_property )
  end
  return target
end

#target_object ⇒ Object 



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# File 'lib/r4x/xmllist_delegate.rb', line 13

def target_object        ; @x.__target_object         ; end

#target_object=(to) ⇒ Object 



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# File 'lib/r4x/xmllist_delegate.rb', line 15

def target_object=(to)   ; @x.__target_object = to    ; end

#target_property ⇒ Object 



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# File 'lib/r4x/xmllist_delegate.rb', line 14

def target_property      ; @x.__target_property       ; end

#target_property=(tp) ⇒ Object 



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# File 'lib/r4x/xmllist_delegate.rb', line 16

def target_property=(tp) ; @x.__target_property = tp  ; end