Class: PPCurses::TableView

Inherits:
View show all
Defined in:
lib/ppcurses/table_view.rb

Overview

Based loosely on …

developer.apple.com/library/mac/documentation/Cocoa/Reference/ApplicationKit/Classes/NSTableView_Class/index.html#//apple_ref/occ/cl/NSTableView

Instance Attribute Summary collapse

Attributes inherited from View

#frame

Attributes inherited from ResponderManager

#first_responder

Attributes inherited from Responder

#next_responder

Instance Method Summary collapse

Methods inherited from View

#setFrameOrigin, #setFrameSize

Methods inherited from ResponderManager

#accepts_first_responder, #make_first_responder

Methods inherited from Responder

#accepts_first_responder, #become_first_responder, isa, #resign_first_responder

Constructor Details

#initialize ⇒ TableView

Returns a new instance of TableView.



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# File 'lib/ppcurses/table_view.rb', line 21

def initialize
  super
  origin = Point.new( 2, 2 )
  setFrameOrigin(origin)
  
  @table_columns = []
end

Instance Attribute Details

#data_source ⇒ Object

Returns the value of attribute data_source.



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# File 'lib/ppcurses/table_view.rb', line 18

def data_source
  @data_source
end

#selected_row ⇒ Object (readonly)

Returns the value of attribute selected_row.



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# File 'lib/ppcurses/table_view.rb', line 19

def selected_row
  @selected_row
end

Instance Method Details

#add_table_column(col) ⇒ Object

Column Management



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# File 'lib/ppcurses/table_view.rb', line 141

def add_table_column( col )
  col.table_view = self
  @table_columns.push(col)    
end

#display(screen) ⇒ Object 



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# File 'lib/ppcurses/table_view.rb', line 57

def display(screen)
  
  y = @frame.origin.y
  x = @frame.origin.x
  
  
  # display column header
  screen.setpos(y,x)
  @table_columns.each_with_index do |column,i|
    screen.addstr(column.identifier.center(column.width))
    if i <  @table_columns.length - 1 then screen.addstr(' | ') end
  end
  
  y += 1
  screen.setpos(y,x)
  # Display ================= divider
  @table_columns.each_with_index do |column, i|
    screen.addstr( ''.center(column.width, '=') )  
    if i <  @table_columns.length - 1 then screen.addstr('===') end    
  end
  
  y += 1
  
  for i in 0..@data_source.number_of_rows_in_table(self)-1
    screen.setpos(y,x)
    screen.attron(Curses::A_REVERSE) if i == selected_row
    

    @table_columns.each_with_index do |col,j|
      col_str = @data_source.object_value_for(self, j, i)
      display_string = col_str.ljust(col.width)
      screen.addstr( display_string )
      if j <  @table_columns.length - 1 then screen.addstr(' | ') end
    end
    
    
    screen.attroff(Curses::A_REVERSE) if i == selected_row
    y += 1
  end
end

#key_down(key) ⇒ Object

NSTableViewSelectionDidChangeNotification

NSNotificationCentre



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# File 'lib/ppcurses/table_view.rb', line 101

def key_down( key )
    
    notary = NotificationCentre.default_centre
    
    if key == KEY_DOWN        
      notary.post_notification(PPTableViewSelectionIsChangingNotification, self) 
      @selected_row += 1
      if @selected_row > @data_source.number_of_rows_in_table(self) - 1 then
        @selected_row = 0
      end
      notary.post_notification(PPTableViewSelectionDidChangeNotification, self)        
    end
    
    if key == KEY_UP
       notary.post_notification(PPTableViewSelectionIsChangingNotification, self) 
       @selected_row -= 1
       if @selected_row < 0 then @selected_row = @data_source.number_of_rows_in_table(self) - 1 end
       notary.post_notification(PPTableViewSelectionDidChangeNotification, self)
    end
    
    if key == ENTER
      notary.post_notification(PPTableViewEnterPressedNotification, self) 
    end
    
    
end

#number_of_columns ⇒ Object 



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# File 'lib/ppcurses/table_view.rb', line 128

def number_of_columns
  num_col = 0
  
  while @data_source.object_value_for(self, num_col, 0) != nil do
    num_col += 1
  end
  
  
  num_col
end