Class: Formotion::RowType::StringRow

Inherits:
Base show all
Includes:
BW::KVO
Defined in:
lib/formotion/row_type/string_row.rb

Constant Summary collapse

TEXT_FIELD_TAG =

The new UITextField in a UITableViewCell will be assigned this tag, if applicable.

1000

Instance Attribute Summary

Attributes inherited from Base

#row, #tableView

Instance Method Summary collapse

Methods inherited from Base

#_on_select, #after_build, #after_delete, #break_with_semaphore, #button?, #cellEditingStyle, #cell_style, #delete_row, field_buffer, #indentWhileEditing?, #initialize, #input_accessory_view, #on_delete, #update_cell, #with_semaphore

Constructor Details

This class inherits a constructor from Formotion::RowType::Base

Instance Method Details

#add_callbacks(field) ⇒ Object 



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# File 'lib/formotion/row_type/string_row.rb', line 89

def add_callbacks(field)
  if row.on_enter_callback
    field.should_return? do |text_field|
      if row.on_enter_callback.arity == 0
        row.on_enter_callback.call
      elsif row.on_enter_callback.arity == 1
        row.on_enter_callback.call(row)
      end
      false
    end
  elsif field.returnKeyType == UIReturnKeyDone
    field.should_return? do |text_field|
      text_field.resignFirstResponder
      false
    end
  else
    field.should_return? do |text_field|
      if row.next_row && row.next_row.text_field
        row.next_row.text_field.becomeFirstResponder
      else
        text_field.resignFirstResponder
      end
      true
    end
  end

  field.on_end do |text_field|
    row.on_end_callback && row.on_end_callback.call
  end

  field.on_begin do |text_field|
    row.on_begin_callback && row.on_begin_callback.call
  end

  field.should_begin? do |text_field|
    row.section.form.active_row = row
    true
  end

  field.on_change do |text_field|
    on_change(text_field)
  end
end

#build_cell(cell) ⇒ Object

Configures the cell to have a new UITextField which is used to enter data. Consists of 1) setting up that field with the appropriate properties specified by ‘row` 2) configures the callbacks on the field to call any callbacks `row` listens for. Also does the layoutSubviews swizzle trick to size the UITextField so it won’t bump into the titleLabel.



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# File 'lib/formotion/row_type/string_row.rb', line 23

def build_cell(cell)
  cell.selectionStyle = self.row.selection_style || UITableViewCellSelectionStyleBlue
  field = UITextField.alloc.initWithFrame(CGRectZero)
  field.tag = TEXT_FIELD_TAG

  observe(self.row, "value") do |old_value, new_value|
    break_with_semaphore do
      update_text_field(new_value)
    end
  end

  field.clearButtonMode = UITextFieldViewModeWhileEditing
  field.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter
  field.textAlignment = row.text_alignment || NSTextAlignmentRight

  field.keyboardType = keyboardType

  field.secureTextEntry = true if row.secure?
  field.returnKeyType = row.return_key || UIReturnKeyNext
  field.autocapitalizationType = row.auto_capitalization if row.auto_capitalization
  field.autocorrectionType = row.auto_correction if row.auto_correction
  field.clearButtonMode = row.clear_button || UITextFieldViewModeWhileEditing
  field.enabled = row.editable?
  field.inputAccessoryView = input_accessory_view(row.input_accessory) if row.input_accessory

  add_callbacks(field)

  cell.swizzle(:layoutSubviews) do
    def layoutSubviews
      old_layoutSubviews

      # viewWithTag is terrible, but I think it's ok to use here...
      formotion_field = self.viewWithTag(TEXT_FIELD_TAG)
      formotion_field.sizeToFit

      field_frame = formotion_field.frame
      field_frame.origin.x = self.textLabel.frame.origin.x + self.textLabel.frame.size.width + Formotion::RowType::Base.field_buffer
      field_frame.origin.y = ((self.frame.size.height - field_frame.size.height) / 2.0).round
      field_frame.size.width = self.frame.size.width - field_frame.origin.x - Formotion::RowType::Base.field_buffer
      formotion_field.frame = field_frame
    end
  end

  if UIDevice.currentDevice.systemVersion >= "6.0"
    field.swizzle(:setText) do
      def setText(text)
        r = old_setText(text)
        self.sendActionsForControlEvents(UIControlEventEditingChanged)
        r
      end
    end
  end

  field.font = BW::Font.new(row.font) if row.font
  field.placeholder = row.placeholder
  field.text = row_value
  cell.addSubview(field)
  field

end

#done_editing ⇒ Object 



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# File 'lib/formotion/row_type/string_row.rb', line 150

def done_editing
  self.row.text_field.endEditing(true)
  self.row.done_action.call unless self.row.done_action.nil?
end

#keyboardType ⇒ Object 



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# File 'lib/formotion/row_type/string_row.rb', line 12

def keyboardType
  UIKeyboardTypeDefault
end

#on_change(text_field) ⇒ Object 



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# File 'lib/formotion/row_type/string_row.rb', line 133

def on_change(text_field)
  break_with_semaphore do
    row.value = text_field.text
  end
end

#on_select(tableView, tableViewDelegate) ⇒ Object 



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# File 'lib/formotion/row_type/string_row.rb', line 139

def on_select(tableView, tableViewDelegate)
  if row.editable?
    row.text_field.becomeFirstResponder
  end
end

#row_value ⇒ Object

overriden in subclasses



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# File 'lib/formotion/row_type/string_row.rb', line 85

def row_value
  row.value.to_s
end

#update_text_field(new_value) ⇒ Object

Used when row.value changes



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# File 'lib/formotion/row_type/string_row.rb', line 146

def update_text_field(new_value)
  self.row.text_field.text = row_value
end