Class: Zerenity::List

Inherits:
Base
  • Object
show all
Defined in:
lib/zerenity/list.rb

Overview

:nodoc:

Class Method Summary collapse

Methods inherited from Base

run

Class Method Details

.build(dialog, options) ⇒ Object 



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# File 'lib/zerenity/list.rb', line 42

def self.build(dialog,options)
    super(dialog,options)
    columnTypes = Array.new(options[:columns].length){String}
    (options[:radiolist] || options[:checklist]) ? columnTypes[0] = TrueClass : nil
    listStore = Gtk::ListStore.new(*columnTypes)
    options[:data].each do |datarow|
      row = listStore.append
      datarow.each_with_index do |value,index|
        row[index] = value
      end
    end
    treeView = Gtk::TreeView.new(listStore)
    treeView.selection.mode = (options[:checklist] ? Gtk::SELECTION_MULTIPLE : Gtk::SELECTION_SINGLE)
    toggleProc = (if (treeView.selection.mode.eql?(Gtk::SELECTION_SINGLE))
                  lambda do |cell,path|
                    selectedRow = treeView.model.get_iter(path)
                    if !selectedRow[0]
                      selectedRow[0] = true 
                      currentRow = treeView.model.iter_first
                      begin
                        currentRow[0] = false unless selectedRow == currentRow
                      end while (currentRow.next!)
                    end
                  end
  else
    lambda do |cell,path|
      selectedRow = treeView.model.get_iter(path)
      selectedRow[0] = !selectedRow[0]
    end
  end)
  options[:columns].each_with_index do |columnName,index|
    renderer,column =  columnTypes[index].eql?(TrueClass) ? [Gtk::CellRendererToggle.new,:active] : [Gtk::CellRendererText.new,:text]
    if index.eql?(0)
      renderer.signal_connect('toggled',&toggleProc) if renderer.class.eql?(Gtk::CellRendererToggle)
      renderer.set_radio(true) if options[:radiolist]
    end
    treeView.append_column(Gtk::TreeViewColumn.new(columnName,renderer,column=>index))
  end
  dialog.vbox.add(treeView)
end

.check(options) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/zerenity/list.rb', line 33

def self.check(options)
  super(options)
  raise(ArgumentError.new("No column data was given")) unless options[:data]      
  raise(ArgumentError.new("No column headers were given")) unless  options[:columns]
  raise(ArgumentError.new("Column headers and column data differ in length")) unless  options[:columns].length.eql?(options[:data][0].length)
  raise(ArgumentError.new("Column data lengths are not equal")) unless  options[:data].map{|element|element.length}.uniq.length.eql?(1)
  raise(ArgumentError.new("Radiolist and checklist options can not both be set")) if (options[:radiolist] && options[:checklist]) 
end

.retrieve_selection(dialog, options) ⇒ Object 



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# File 'lib/zerenity/list.rb', line 83

def self.retrieve_selection(dialog,options)
  super(dialog,options)
  treeView = dialog.vbox.children[0]
  results = []
  if (options[:checklist])
    treeView.model.each do |model,path,selectedRow|
      if selectedRow[0]
        resultRow = []
        (model.n_columns-1).times {|index| resultRow << selectedRow[index+1]}
        results << resultRow
      end
    end
    return nil if results.size.zero?
  elsif(options[:radiolist])
    treeView.model.each do |model,path,selectedRow|
      if selectedRow[0]
        (model.n_columns-1).times{|index| results << selectedRow[index+1]}
        break
      end
    end
  else
    selectedRow = treeView.selection.selected
    treeView.model.n_columns.times{|index| results << selectedRow[index]}
  end
  return results
end