Module: Canis::WidgetShortcuts

Included in:
App
Defined in:
lib/canis/core/util/widgetshortcuts.rb,
lib/canis/core/util/oldwidgetshortcuts.rb

Defined Under Namespace

Classes: Ws, WsFlow, WsStack

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.def_widget(path, klass, short = nil) ⇒ Object

create a shortcut for a class path is path of file to use in require starting with canis klass is name of class to instantiate



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# File 'lib/canis/core/util/widgetshortcuts.rb', line 89

def self.def_widget(path, klass, short=nil)
  p=""
   if path
    p="require \"#{path}\""
  end
   short ||= klass.to_s.downcase
    eval %{
      def #{short}(config={}, &block)
        if config.is_a? String
           _s = config
           config = {}
           config[:text] = _s
        end
        #{p}
        w = #{klass}.new nil, config
        _position w
        w.command &block if block_given?
        return w
      end
    }
end

Instance Method Details

#_configure(s) ⇒ Object

This configures a stack or flow not the objects inside



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# File 'lib/canis/core/util/widgetshortcuts.rb', line 469

def _configure s
  s[:row] ||= 0
  s[:col] ||= 0
  s[:row] += (s[:margin_top] || 0)
  s[:col] += (s[:margin_left] || 0)
  s[:width] = FFI::NCurses.COLS-s[:col] if s[:width] == :expand
  s[:height] = FFI::NCurses.LINES-s[:row] if s[:height] == :expand # 2011-11-30 
  last = @_ws_active.last
  if last
    if s[:width_pc]
      if last.is_a? WsStack
        s[:width] =           (last[:width] * (s[:width_pc].to_i * 0.01)).floor
      else
        # i think this width is picked up by next stack in this flow
        last[:item_width] =   (last[:width] * (s[:width_pc].to_i* 0.01)).floor
      end
    end
    if s[:height_pc]
      if last.is_a? WsFlow
        s[:height] =       ( (last[:height] * s[:height_pc].to_i)/100).floor
      else
        # this works only for flows within stacks not for an object unless
        # you put a single object in a flow
        s[:item_height] =  ( (last[:height] * s[:height_pc].to_i)/100).floor
      end
        #alert "item height set as #{s[:height]} for #{s} "
    end
    if last.is_a? WsStack
      s[:row] += (last[:row] || 0)
      s[:col] += (last[:col] || 0)  
    else
      s[:row] += (last[:row] || 0)
      s[:col] += (last[:col] || 0)  # we are updating with item_width as each st finishes
      s[:width] ||= last[:item_width] # 
    end
  else
    # this should be outer most flow or stack, if nothing mentioned
    # trying this out
    s[:width] ||= :expand
    s[:height] ||= :expand
    s[:width] = FFI::NCurses.COLS-s[:col] if s[:width] == :expand
    s[:height] = FFI::NCurses.LINES-s[:row] if s[:height] == :expand # 2011-11-30 
  end
  s[:components] = []
end

#_position(w) ⇒ Object

— }}}



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# File 'lib/canis/core/util/widgetshortcuts.rb', line 295

def _position w
  if @_ws_active.nil? || @_ws_active.empty?
    # no stack or flow, this is independent usage, or else we are outside stacks and flows
    #
    # this is outside any stack or flow, so we do the minimal
    # user should specify row and col
    w.row ||= 0
    w.col ||= 0
    #$log.debug "XXX:  LABEL #{w.row} , #{w.col} "
    w.set_form @form if @form # temporary,, only set if not inside an object FIXME
    if w.width == :expand  # calculate from current col, not 0 FIXME
      w.width = FFI::NCurses.COLS-w.col # or take windows width since this could be in a message box
    end
    if w.height == :expand
      # take from current row, and not zero  FIXME
      w.height = FFI::NCurses.LINES-w.row # or take windows width since this could be in a message box
    end
    return

  end
  # -------------------------- there is a stack or flow -------------------- #
  #
  cur = @_ws_active.last
  unless cur
    raise "This should have been handled previously.Somethings wrong, check/untested"
  end
  r = cur[:row] || 0
  c = cur[:col] || 0
  w.row = r
  w.col = c
  # if flow then take flows height, else use dummy value
  if w.height_pc
    w.height =       ( (cur[:height] * w.height_pc.to_i)/100).floor
  end
  if w.height == :expand
    if cur.is_a? WsFlow
      w.height = cur[:height] || 8 #or raise "height not known for flow"
    else
      w.height = cur[:item_height] || 8 #or raise "height not known for flow"
    end
    #alert "setting ht to #{w.height}, #{cur[:height]} , for #{cur} "
  end
  if w.width == :expand
    if cur.is_a? WsFlow
      if cur[:item_width]
        w.width = cur[:item_width] #or raise "item_Width not known for flow #{cur.class}, #{cur[:item_width]}, #{cur[:width]} , #{w.width_pc}  "
      elsif w.width_pc
        #w.width = w.width_pc * cur[:width]
        w.width = (cur[:width] * (w.width_pc.to_i * 0.01)).floor
      else
        w.width = cur[:width] 
      end
      raise "width could not be calculated. i need flow width and item width_pc" if w.width == :expand
    else
      w.width = cur[:width] or raise "Width not known for stack #{cur.class}, #{cur[:width]} "
    end
  end
  if cur.is_a? WsStack
    r += w.height || 1   # NOTE, we need to have height for this purpose defined BEFORE calling for list/text
    cur[:row] = r
  else
    wid = cur[:item_width] || w.width || 10
    c += wid + 1
    cur[:col] = c
  end
  #alert "set width to #{w.width} ,cur: #{cur[:width]} ,iw: #{cur[:item_width]} "
  if cur.is_a? WsFlow
    unless w.height
      w.height = cur[:height] #or raise "Height not known for flow"
    end
  end
  w.color   ||= cur[:color]
  w.bgcolor ||= cur[:bgcolor]
  w.set_form @form if @form # temporary
  @_ws_components << w
  cur[:components] << w
end

#app_header(title, config = {}, &block) ⇒ Object

add a standard application header

Example

header = app_header "canis ", :text_center => "Browser Demo", :text_right =>"New Improved!", 
     :color => :black, :bgcolor => :white, :attr => :bold



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# File 'lib/canis/core/util/widgetshortcuts.rb', line 126

def app_header title, config={}, &block
  require 'canis/core/widgets/applicationheader'
  header = ApplicationHeader.new @form, title, config, &block
end

#blank ⇒ Object

— shortcuts {{{



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# File 'lib/canis/core/util/widgetshortcuts.rb', line 53

def blank
  label :text => ""
end

#box(config = {}, &block) ⇒ Object

flow and stack could have a border option



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# File 'lib/canis/core/util/widgetshortcuts.rb', line 427

def box config={}, &block
  require 'canis/core/widgets/box'
  # take current stacks row and col
  # advance row by one and col by one
  # at end note row and advance by one
  # draw a box around using these coordinates. width should be
  # provided unless we have item width or something.
  @_ws_active ||= []
  last = @_ws_active.last
  if last
    r = last[:row]
    c = last[:col]
    config[:row] = r
    config[:col] = c
    last[:row] += config[:margin_top] || 1
    last[:col] += config[:margin_left] || 1
    _box = Box.new @form, config # needs to be created first or will overwrite area after others painted
    yield_or_eval &block if block_given?
    # FIXME last[height] needs to account for row
    h = config[:height] || last[:height] || (last[:row] - r)
    h = 2 if h < 2
    w = config[:width] || last[:width] || 15 # tmp
    case last
    when WsFlow
      w = last[:col]
    when WsStack
      #h += 1
    end
    config[:row] = r
    config[:col] = c
    config[:height] = h
    config[:width] = w
    _box.row r
    _box.col c
    _box.height h
    _box.width w
    last[:row] += 1
    last[:col] += 1 # ??? XXX if flow we need to increment properly or not ?
  end
end

#button(config = {}, &block) ⇒ Object 



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# File 'lib/canis/core/util/oldwidgetshortcuts.rb', line 84

def button config={}, &block
  w = Button.new nil, config #, &block
  _position w
  if block
    w.bind(:PRESS, &block)
  end
  return w
end

#check(config = {}, &block) ⇒ Object

horizontal line TODO row = config || @app_row width = config || 20 _position config col = config || 1 @window.attron(Ncurses.COLOR_PAIR(@color_pair) | @attrib) @window.mvwhline( row, col, FFI::NCurses::ACS_HLINE, width) @window.attron(Ncurses.COLOR_PAIR(@color_pair) | @attrib)



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# File 'lib/canis/core/util/oldwidgetshortcuts.rb', line 76

def check config={}, &block
  w = CheckBox.new nil, config #, &block
  _position w
  if block
    w.bind(:PRESS, &block)
  end
  return w
end

#dock(labels, config = {}, &block) ⇒ Object

prints pine-like key labels



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# File 'lib/canis/core/util/widgetshortcuts.rb', line 198

def dock labels, config={}, &block
  require 'canis/core/widgets/keylabelprinter'
  klp = Canis::KeyLabelPrinter.new @form, labels, config, &block
end

#field(config = {}, &block) ⇒ Object 



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# File 'lib/canis/core/util/oldwidgetshortcuts.rb', line 48

def field config={}, &block 
  w = Field.new nil, config #, &block
  _position w
  if block
    w.bind(:CHANGED, &block)
  end
  return w
end

#flow(config = {}, &block) ⇒ Object

item_width - width to use per item 

but the item width may apply to stacks inside not to items



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# File 'lib/canis/core/util/widgetshortcuts.rb', line 403

def flow config={}, &block
  s = WsFlow.new config
  @_ws_active ||= []
  _configure s
  @_ws_active << s
  yield_or_eval &block if block_given?
  @_ws_active.pop 
  last = @_ws_active.last
  if last 
    case last
    when WsStack
      if s[:height]
        last[:row] += s[:height] 
      else
        #last[:row] += last[:highest_row]  
        last[:row] += 1
      end
    when WsFlow
      last[:col] += last[:item_width] || 0 
    end
  end
end

#label(config = {}, &block) ⇒ Object 



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# File 'lib/canis/core/util/oldwidgetshortcuts.rb', line 56

def label config={}, &block 
  w = Label.new nil, config, &block
  _position w
  return w
end

#line(config = {}) ⇒ Object 



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# File 'lib/canis/core/util/widgetshortcuts.rb', line 56

def line config={}
  #horizontal line TODO
  #row = config[:row] || @app_row
  #width = config[:width] || 20
  #_position config
  #col = config[:col] || 1
  #@color_pair = config[:color_pair] || $datacolor
  #@attrib = config[:attrib] || Ncurses::A_NORMAL
  #@window.attron(Ncurses.COLOR_PAIR(@color_pair) | @attrib)
  #@window.mvwhline( row, col, FFI::NCurses::ACS_HLINE, width)
  #@window.attron(Ncurses.COLOR_PAIR(@color_pair) | @attrib)
end

#link(config = {}, &block) ⇒ Object 



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# File 'lib/canis/core/util/widgetshortcuts.rb', line 210

def link config={}, &block
      if config.is_a? String
         _s = config
         config = {}
         config[:text] = _s
      end
  require 'canis/core/widgets/rlink'
  events = [ :PRESS,  :LEAVE, :ENTER ]
  block_event = :PRESS
  config[:highlight_color] = "yellow"
  config[:highlight_bgcolor] = "red"
  toggle = Link.new nil, config
  _position(toggle)
  if block
    toggle.bind(block_event, toggle, &block)
  end
  return toggle
end

#listbox(config = {}, &block) ⇒ Object 



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# File 'lib/canis/core/util/widgetshortcuts.rb', line 176

def listbox config={}, &block
  require 'canis/core/widgets/listbox'
  events = [ :PRESS, :ENTER_ROW, :LEAVE, :ENTER ]
  block_event = events[0]
  #_process_args args, config, block_event, events
  #config[:width] = config[:display_length] unless config.has_key? :width
  # if no width given, expand to flows width
  #config[:width] ||= @stack.last.width if @stack.last
  useform = nil
  #useform = @form if @current_object.empty?
  #w = List.new useform, config
  w = Listbox.new useform, config
  w.width = :expand unless w.width
  w.height ||= :expand # TODO We may need to push this before _position so it can be accounted for in stack
  _position(w)
  # need to expand to stack's width or flows itemwidth if given
  if block
    w.bind(block_event, &block)
  end
  return w
end

#menubar(&block) ⇒ Object 



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# File 'lib/canis/core/util/widgetshortcuts.rb', line 118

def menubar &block
  require 'canis/core/widgets/rmenu'
  Canis::MenuBar.new &block
end

#menulink(config = {}, &block) ⇒ Object 



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# File 'lib/canis/core/util/widgetshortcuts.rb', line 228

def menulink config={}, &block
      if config.is_a? String
         _s = config
         config = {}
         config[:text] = _s
      end
  require 'canis/core/widgets/rmenulink'
  events = [ :PRESS,  :LEAVE, :ENTER ]
  block_event = :PRESS
  config[:highlight_color] = "yellow"
  config[:highlight_bgcolor] = "red"
  #config[:hotkey] = true
  w = MenuLink.new nil, config
  _position(w)
  if block
    w.bind(block_event, w, &block)
  end
  return w
end

#radio(config = {}, &block) ⇒ Object

horizontal line TODO row = config || @app_row width = config || 20 _position config col = config || 1 @window.attron(Ncurses.COLOR_PAIR(@color_pair) | @attrib) @window.mvwhline( row, col, FFI::NCurses::ACS_HLINE, width) @window.attron(Ncurses.COLOR_PAIR(@color_pair) | @attrib)



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# File 'lib/canis/core/util/widgetshortcuts.rb', line 68

def radio config={}, &block
  a = config[:group]
  # should we not check for a nil
  if @variables.has_key? a
    v = @variables[a]
  else
    v = Variable.new
    @variables[a] = v
  end
  config[:variable] = v
  config.delete(:group)
  w = RadioButton.new nil, config #, &block
  _position w
  if block
    w.bind(:PRESS, &block)
  end
  return w
end

#stack(config = {}, &block) ⇒ Object

make it as simple as possible, don’t try to be intelligent or clever, put as much on the user



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# File 'lib/canis/core/util/widgetshortcuts.rb', line 376

def stack config={}, &block
  s = WsStack.new config
  @_ws_active ||= []
  _configure s
  @_ws_active << s
  yield_or_eval &block if block_given?
  @_ws_active.pop 
  
  # ---- stack is finished now
  last = @_ws_active.last
  if last 
    case last
    when WsStack
    when WsFlow
      last[:col] += last[:item_width] || 0 
      # this tries to set height of outer flow based on highest row
      # printed, however that does not account for height of object,
      # so user should give a height to the flow.
      last[:height] = s[:row] if s[:row] > (last[:height]||0)
      $log.debug "XXX: STACK setting col to #{s[:col]} "
    end
  end

end

#status_line(config = {}, &block) ⇒ Object

prints a status line at bottom where mode’s statuses et can be reflected



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# File 'lib/canis/core/util/widgetshortcuts.rb', line 205

def status_line config={}, &block
  require 'canis/core/widgets/statusline'
  sl = Canis::StatusLine.new @form, config, &block
end

#table(config = {}, &block) ⇒ Object

creates a simple readonly table, that allows users to click on rows and also on the header. Header clicking is for column-sorting.



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# File 'lib/canis/core/util/widgetshortcuts.rb', line 273

def table config={}, &block
#def tabular_widget config={}, &block
  require 'canis/core/widgets/table'
  events = [:PROPERTY_CHANGE, :LEAVE, :ENTER, :CHANGE, :ENTER_ROW, :PRESS ]
  block_event = nil
  # if no width given, expand to stack width
  #config.delete :title
  useform = nil

  w = Table.new useform, config # NO BLOCK GIVEN
  w.width ||= :expand 
  w.height ||= :expand # TODO This has to come before other in stack next one will overwrite.
  _position(w)
  if block_given?
    #@current_object << w
    yield_or_eval &block
    #@current_object.pop
  end
  return w
end

#textarea(config = {}, &block) ⇒ Object

editable text area



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# File 'lib/canis/core/util/widgetshortcuts.rb', line 132

def textarea config={}, &block
  require 'canis/core/widgets/extras/rtextarea'
  # TODO confirm events many more
  events = [ :CHANGE,  :LEAVE, :ENTER ]
  block_event = events[0]
  #_process_args args, config, block_event, events
  #config[:width] = config[:display_length] unless config.has_key? :width
  # if no width given, expand to flows width
  #config[:width] ||= @stack.last.width if @stack.last
  useform = nil
  #useform = @form if @current_object.empty?
  w = TextArea.new useform, config
  w.width = :expand unless w.width
  w.height ||= :expand # TODO This has to come before other in stack next one will overwrite.
  _position(w)
  w.height ||= 8 # TODO
  # need to expand to stack's width or flows itemwidth if given
  if block
    w.bind(block_event, &block)
  end
  return w
end

#textpad(config = {}, &block) ⇒ Object Also known as: textview 



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# File 'lib/canis/core/util/widgetshortcuts.rb', line 154

def textpad config={}, &block
  events = [ :LEAVE, :ENTER ]
  block_event = events[0]
  #_process_args args, config, block_event, events
  #config[:width] = config[:display_length] unless config.has_key? :width
  # if no width given, expand to flows width
  #config[:width] ||= @stack.last.width if @stack.last
  useform = nil
  #useform = @form if @current_object.empty?
  #w = TextView.new useform, config
  w = TextPad.new useform, config
  w.width = :expand unless w.width
  w.height ||= :expand # TODO This has to come before other in stack next one will overwrite.
  _position(w)
  # need to expand to stack's width or flows itemwidth if given
  if block
    w.bind(block_event, &block)
  end
  return w
end

#tree(config = {}, &block) ⇒ Object 



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# File 'lib/canis/core/util/widgetshortcuts.rb', line 247

def tree config={}, &block
  require 'canis/core/widgets/tree'
  events = [:TREE_WILL_EXPAND_EVENT,
            :TREE_EXPANDED_EVENT,
            :TREE_SELECTION_EVENT,
            :PROPERTY_CHANGE,
            :LEAVE,
            :ENTER ,
            :ENTER_ROW,
            :TREE_COLLAPSED_EVENT,
            :TREE_WILL_EXPAND_EVENT] # EXPAND double?
  block_event = :TREE_WILL_EXPAND_EVENT
  #config[:height] ||= 10
  # if no width given, expand to flows width
  useform = nil
  #useform = @form if @current_object.empty?
  w = Tree.new useform, config, &block
  w.width ||= :expand 
  w.height ||= :expand # TODO This has to come before other in stack next one will overwrite.
  _position w
  # calling the block here was causing a problem since a tree may define root etc in the block
  # containers like to define elements in a block and not have an event called by default
  return w
end

#widget_shortcuts_init ⇒ Object 



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# File 'lib/canis/core/util/widgetshortcuts.rb', line 45

def widget_shortcuts_init
  @_ws_app_row = @_ws_app_col = 0
  #@_ws_active = []
  @_ws_active = nil # so we can use shortcuts if no stack used
  @_ws_components = []
  @variables = {}
end