Class: Cosmos::ComboBoxItemDelegate

Inherits:
Qt::StyledItemDelegate
  • Object
show all
Defined in:
lib/cosmos/tools/table_manager/table_manager.rb

Overview

This class applies to all items in the table but its only purpose is to determine if table cells should be rendered as comboboxes. Any table items with states are rendered as comboboxes.

Instance Method Summary collapse

Instance Method Details

#createEditor(parent, option, index) ⇒ Object

Create the combobox widget to display the values

Parameters:

  • parent (Qt::Widget) —

    Parent to created widget

  • option (Qt::StyleOptionViewItem) —

    Style options (not used)

  • index (Qt::ModelIndex) —

    Indicates which table item is active



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# File 'lib/cosmos/tools/table_manager/table_manager.rb', line 44

def createEditor(parent, option, index)
  table = TableManager.instance.core.config.table(TableManager.instance.current_table_name)
  gui_table = TableManager.instance.tabbook.tab(TableManager.instance.current_table_name)
  if table.type == :TWO_DIMENSIONAL
    item_name = gui_table.horizontalHeaderItem(index.column).text + index.row.to_s
    item = table.get_item(item_name)
  else
    item_name = gui_table.verticalHeaderItem(index.row).text
    item = table.get_item(item_name)
  end
  if item.states && item.editable
    combo = Qt::ComboBox.new(parent)
    combo.addItems(item.states.keys.sort)
    combo.setCurrentText(table.read(item.name).to_s)
    connect(combo, SIGNAL('activated(int)')) do
      emit commitData(combo)
      gui_table.closeEditor(combo, 0)
    end
    return combo
  else
    return super(parent, option, index)
  end
end

#setEditorData(editor, index) ⇒ Object

Sets the current item in the combobox based on the model data

Parameters:

  • editor (Qt::Widget) —

    Editor widget

  • index (Qt::ModelIndex) —

    Where in the model to grab the data



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# File 'lib/cosmos/tools/table_manager/table_manager.rb', line 84

def setEditorData(editor, index)
  if Qt::ComboBox === editor
    v = index.data(Qt::EditRole)
    combo_index = editor.findText(v.toString)
    if combo_index >= 0
      editor.setCurrentIndex(combo_index)
    else
      editor.setCurrentIndex(0)
    end
  else
    super(editor, index)
  end
end

#setModelData(editor, model, index) ⇒ Object

Gets the current item from the combobox if it exists and writes it back to the model.

Parameters:

  • editor (Qt::Widget) —

    Editor widget

  • model (Qt::AbstractItemModel) —

    Model to write the gui data to

  • index (Qt::ModelIndex) —

    Where in the model to update the data



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# File 'lib/cosmos/tools/table_manager/table_manager.rb', line 73

def setModelData(editor, model, index)
  if Qt::ComboBox === editor
    model.setData(index, Qt::Variant.new(editor.currentText), Qt::EditRole)
  else
    super(editor, model, index)
  end
end