Class: Clevic::TextDelegate

Inherits:
Delegate show all
Defined in:
lib/clevic/qt/text_delegate.rb,
lib/clevic/swing/text_delegate.rb

Defined Under Namespace

Classes: TextEditor

Instance Attribute Summary

Attributes inherited from Delegate

#entity, #field, #parent

Instance Method Summary collapse

Methods inherited from Delegate

#attribute, #editorEvent, #entity_class, #initialize, #inspect, #is_combo?, #native, #show_message

Methods included from FieldValuer

#attribute_value, #attribute_value=, #display_value, #edit_value, #edit_value=, #find_related, #raw_value, #text_value=, #tooltip, valuer, #valuer, #writer

Constructor Details

This class inherits a constructor from Clevic::Delegate

Instance Method Details

#createEditor(parent_widget, style_option_view_item, model_index) ⇒ Object

Override the Qt method



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# File 'lib/clevic/qt/text_delegate.rb', line 42

def createEditor( parent_widget, style_option_view_item, model_index )
  if false && model_index.edit_value.count("\n") == 0
    # futzing about here, really
    @editor = Qt::LineEdit.new( parent_widget )
  else
    @editor = TextEditor.new( parent_widget )
    @editor.install_event_filter( self )
  end
  @editor
end

#editor ⇒ Object 



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# File 'lib/clevic/swing/text_delegate.rb', line 12

def editor
  @editor ||= javax.swing.JTextField.new.tap do |e|
    e.horizontal_alignment = field.swing_alignment
  end
end

#eventFilter(object, event) ⇒ Object

this is overridden in Qt::ItemDelegate, but that always catches the return key. Which we want for text editing. Instead, we use Ctrl-Enter to save the edited text. return true if event is handled, false otherwise



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# File 'lib/clevic/qt/text_delegate.rb', line 16

def eventFilter( object, event )
  if object.class == TextEditor && event.class == Qt::KeyEvent
    retval =
    case
      when event.ctrl? && ( event.enter? || event.return? )
        # close and save
        # copied from QItemDelegate.
        emit commitData( object )
        emit closeEditor( object )
        true

      # send an enter or return to the text editor
      when event.enter? || event.return?
        object.event( event )
        true
    end
  end
  retval || super
end

#full_edit ⇒ Object

maybe open in a separate window?



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# File 'lib/clevic/qt/text_delegate.rb', line 37

def full_edit
  puts "#{self.class.name} full_edit"
end

#init_component(cell_editor) ⇒ Object

TODO check that VK_ENTER stops editing



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# File 'lib/clevic/swing/text_delegate.rb', line 7

def init_component( cell_editor )
  editor.text = edit_value
  editor.select_all
end

#minimal_edit ⇒ Object 



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# File 'lib/clevic/swing/text_delegate.rb', line 22

def minimal_edit
  editor.select_all
end

#needs_pre_selection? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/clevic/swing/text_delegate.rb', line 26

def needs_pre_selection?
  true
end

#setEditorData(editor, model_index) ⇒ Object

Override the Qt method to send data to the editor from the model.



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# File 'lib/clevic/qt/text_delegate.rb', line 71

def setEditorData( editor, model_index )
  editor.plain_text = model_index.edit_value
end

#setModelData(editor, abstract_item_model, model_index) ⇒ Object

Send the data from the editor to the model. The data will be translated by translate_from_editor_text,



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# File 'lib/clevic/qt/text_delegate.rb', line 77

def setModelData( editor, abstract_item_model, model_index )
  model_index.edit_value = editor.to_plain_text
  abstract_item_model.data_changed( model_index )
rescue
  abstract_item_model.emit_data_error( model_index, editor.to_plain_text, $!.message )
end

#updateEditorGeometry(editor, style_option_view_item, model_index) ⇒ Object

Override the Qt::ItemDelegate method.



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# File 'lib/clevic/qt/text_delegate.rb', line 54

def updateEditorGeometry( editor, style_option_view_item, model_index )
  rect = Qt::Rect.new( style_option_view_item.rect.top_left, style_option_view_item.rect.size ) 

  # ask the editor for how much space it wants, and set the editor
  # to that size when it displays in the table
  rect.set_width( [editor.size_hint.width,rect.width].max )
  rect.set_height( editor.size_hint.height )

  unless editor.parent.rect.contains( rect )
    # 46 because TableView returns an incorrect bottom.
    # And I can't find out how to get the correct value.
    rect.move_bottom( parent.contents_rect.bottom - 46 )
  end
  editor.set_geometry( rect )
end

#value ⇒ Object 



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# File 'lib/clevic/swing/text_delegate.rb', line 18

def value
  editor.text
end