Class: Tgios::UITableViewModelBinding

Inherits:
BindingBase show all
Defined in:
lib/tgios/ui_table_view_model_binding.rb

Instance Method Summary collapse

Methods inherited from BindingBase

#dealloc, #hook, #prepareForRelease, #unhook

Constructor Details

#initialize ⇒ UITableViewModelBinding

Returns a new instance of UITableViewModelBinding.



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 4

def initialize
  super
  PlasticCup::Base.add_style_sheet(:ui_field_default_styles, {
      clearButtonMode: UITextFieldViewModeWhileEditing,
      tag: 99
  }) unless Base.get_style_sheet(:ui_field_default_styles)
  PlasticCup::Base.add_style_sheet(:ui_field_without_label, {
      extends: :ui_field_default_styles,
      frame: CGRectMake(16, 9, 292, 25)
  }, :ios7) unless Base.get_style_sheet(:ui_field_without_label)
  PlasticCup::Base.add_style_sheet(:ui_field_without_label, {
      extends: :ui_field_default_styles,
      frame: CGRectMake(16, 9, 282, 25)
  }) unless Base.get_style_sheet(:ui_field_without_label)
  PlasticCup::Base.add_style_sheet(:ui_field_with_label, {
      extends: :ui_field_default_styles,
      frame: CGRectMake(114, 9, 194, 25)
  }, :ios7) unless Base.get_style_sheet(:ui_field_with_label)
  PlasticCup::Base.add_style_sheet(:ui_field_with_label, {
      extends: :ui_field_default_styles,
      frame: CGRectMake(84, 9, 214, 25)
  }) unless Base.get_style_sheet(:ui_field_with_label)
  PlasticCup::Base.add_style_sheet(:ui_view_default_styles, {
      font: lambda {UIFont.systemFontOfSize(15)},
      backgroundColor: :clear.uicolor,
      tag: 88
  }) unless Base.get_style_sheet(:ui_view_default_styles)

  @events={}
  @events[:build_cell]=->(cell_identifier, type) { build_cell(cell_identifier, type) }
  @events[:update_cell]=->(field_set, cell, index_path) { create_or_update_field(field_set, cell, index_path)}
  @events[:update_accessory]=->(field_set, cell, index_path, ui_field) { update_accessory_type_or_view(field_set, cell, index_path, ui_field)}
  @events[:update_cell_height]=->(field_set, index_path) { update_cell_height(field_set, index_path) }
  @contact_buttons = []
end

Instance Method Details

#bind(tableView, model, fields) ⇒ Object 



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 42

def bind(tableView, model, fields)
  @tableView=WeakRef.new(tableView)
  @fields=fields
  bindings_prepare_release
  @bindings={}
  @tv_bindings={}
  self.model=model
  @tableView.dataSource=self
  @tableView.delegate=self
  self
end

#bindings_prepare_release ⇒ Object 



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 393

def bindings_prepare_release
  @bindings.values.each do |binding|
    binding.prepareForRelease
  end if @binding.is_a?(Hash)
  @tv_bindings.values.each do |binding|
    binding.prepareForRelease
  end if @tv_bindings.is_a?(Hash)
end

#build_cell(cell_identifier, type) ⇒ Object 



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 84

def build_cell(cell_identifier, type)
  if type == :checkbox
    cell = UITableViewCell.default(cell_identifier)
    cell.textLabel.numberOfLines = 0
  else
    cell = UITableViewCell.value2(cell_identifier)

    if type == :dynamic_label || type == :big_label
      cell.detailTextLabel.numberOfLines = 0
      cell.detailTextLabel.backgroundColor = :clear.uicolor
      cell.textLabel.numberOfLines = 0
    elsif type == :label_only || type == :array
      cell.detailTextLabel.textColor = UIColor.colorWithRed(0, green: 122.0/255.0, blue: 1.0, alpha: 1.0)
    else
      cell.textLabel.numberOfLines = 2
    end
  end
  cell.clipsToBounds = true
  cell
end

#create_or_update_field(field_set, cell, index_path) ⇒ Object 



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 105

def create_or_update_field(field_set, cell, index_path)
  ui_field=nil
  #ap field_set
  cell.textLabel.text= field_set[:show_label] ? field_set[:label] : ''

  cell.selectionStyle=UITableViewCellSelectionStyleNone
  case field_set[:type]
    when :text, :password, :label
      ui_field=cell.contentView.viewWithTag(99)

      if ui_field.nil?
        ui_field = UITextField.new
        cell.contentView.addSubview(ui_field)
      end

      if field_set[:show_label]
        PlasticCup::Base.style(ui_field, :ui_field_with_label)
      else
        PlasticCup::Base.style(ui_field, :ui_field_without_label)
      end
      ui_field.placeholder= field_set[:show_label] ? field_set[:placeholder] : field_set[:label]

      text_field_binding=@bindings[field_set[:name]]
      if text_field_binding.nil?
        text_field_binding=UITextFieldBinding.new(@model, ui_field, field_set[:name], field_set)
        text_field_binding.on(:return_tapped) do |model, field_name, event|
          @events[:text_return_tapped].call(model, field_name, event) unless @events[:text_return_tapped].nil?
        end
        @bindings[field_set[:name]]=text_field_binding
      end
      text_field_binding.on(:begin_edit) do |model, field_name, event|
        @events[:text_begin_edit].call(model, field_name, event) unless @events[:text_begin_edit].nil?
        performSelector('will_scroll_to_index_path:', withObject: index_path, afterDelay:0.01)
      end
      text_field_binding.update(ui_field, @model)
      ui_field.becomeFirstResponder if field_set[:first_responder] # TODO: not work when cell is not visible, buggy
    when :big_label, :dynamic_label
      cell.detailTextLabel.text = @model.send(field_set[:name])

    when :array
      if field_set[:child_index].nil?
        cell.detailTextLabel.text = field_set[:label]
      else
        child_field = field_set[:child_field]
        child = @model.send(field_set[:name])[field_set[:child_index]]
        if child_field[:type] == :checkbox
          cell.textLabel.text = child[child_field[:display_field]]
          cell.imageView.image = child[:selected] ? 'tick_select.png'.uiimage : 'tick_deselect.png'.uiimage
        else
          cell.textLabel.text = nil
          cell.detailTextLabel.numberOfLines = 0
          cell.detailTextLabel.text = child[child_field[:display_field]]
        end
      end

    when :checkbox
      cell.textLabel.text = field_set[:label]
      cell.imageView.image = @model.send(field_set[:name])== true ? 'tick_select.png'.uiimage : 'tick_deselect.png'.uiimage

    when :label_only
      cell.detailTextLabel.text = field_set[:label]

    when :text_view

      ui_field=cell.contentView.viewWithTag(88)
      ui_field_default_frame = Rect([[16, 9], [282, 90]])

      if ui_field.nil?
        ui_field = PlasticCup::Base.style(UITextView.new, :ui_view_default_styles)
        cell.contentView.addSubview(ui_field)
      end

      ui_field.frame = ui_field_default_frame

      text_field_binding=@tv_bindings[field_set[:name]]
      if text_field_binding.nil?
        text_field_binding=UITextViewBinding.new(@model, ui_field, field_set[:name], field_set)
        text_field_binding.on(:return_tapped) do |model, field_name, event|
          @events[:text_return_tapped].call(model, field_name, event) unless @events[:text_return_tapped].nil?
        end
        @tv_bindings[field_set[:name]]=text_field_binding
      end
      text_field_binding.on(:begin_edit) do |model, field_name, event|
        @events[:text_begin_edit].call(model, field_name, event) unless @events[:text_begin_edit].nil?
        performSelector('will_scroll_to_index_path:', withObject: index_path, afterDelay:0.01)
      end
      text_field_binding.update(ui_field, @model)
      ui_field.becomeFirstResponder if field_set[:first_responder] # TODO: not work when cell is not visible, buggy



  end

  ui_field
end

#expand_table_view(note) ⇒ Object 



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 313

def expand_table_view(note)
  @expanding = true
  offset_y = @tableView.contentOffset.y
  frame_height = @tableView.frame.size.height
  content_height = @tableView.contentSize.height
  new_offset_height = nil
  if frame_height > content_height
    if offset_y != 0
      new_offset_height = 0
    end
  else
    bottom_offset = frame_height - content_height + offset_y
    if bottom_offset > 0
      new_offset_height = offset_y - bottom_offset
    end
  end

  if new_offset_height.nil?
    reset_content_inset_bottom
  else
    curve = note[UIKeyboardAnimationCurveUserInfoKey]
    duration = note[UIKeyboardAnimationDurationUserInfoKey]
    @animation_proc = -> {
      @tableView.setContentOffset([0, new_offset_height])
    }
    @completion_proc = lambda { |finished|
      reset_content_inset_bottom
    }
    UIView.animateWithDuration(duration-0.01, delay: 0, options: curve,
                               animations: @animation_proc,
                               completion: @completion_proc)
  end
end

#field_set_at_index_path(index_path) ⇒ Object 



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 278

def field_set_at_index_path(index_path)
  row = index_path.row
  array_indices = @fields.each_index.select{|i| @fields[i][:type] == :array}
  return @fields[row] if array_indices.empty? || array_indices.first >= row
  array_count_sum = 0
  array_indices.each do |a_idx|
    array_count = @model.send(@fields[a_idx][:name]).length
    if row <= a_idx + array_count_sum + array_count
      sub_idx = row - a_idx - array_count_sum - 1
      return sub_idx < 0 ? @fields[a_idx + sub_idx + 1] : @fields[a_idx].merge(child_index: sub_idx)
    end
    array_count_sum += array_count
  end
  @fields[row - array_count_sum]
end

#keyboardWillHide(note) ⇒ Object 



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 309

def keyboardWillHide(note)
  expand_table_view(note)
end

#keyboardWillShow(note) ⇒ Object 



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 305

def keyboardWillShow(note)
  shrink_table_view(note)
end

#listen_to_keyboard ⇒ Object 



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 294

def listen_to_keyboard
  @scroll_when_editing = true
  NSNotificationCenter.defaultCenter.addObserver(self, selector: 'keyboardWillShow:', name: UIKeyboardWillShowNotification, object: nil)
  NSNotificationCenter.defaultCenter.addObserver(self, selector: 'keyboardWillHide:', name: UIKeyboardWillHideNotification, object: nil)
end

#model=(value) ⇒ Object 



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 54

def model=(value)
  @model=WeakRef.new(value)
  @tableView.reloadData()
end

#on(event_name, &block) ⇒ Object 



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 63

def on(event_name, &block)
  @events[event_name]=block
  self
end

#onPrepareForRelease ⇒ Object 



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 402

def onPrepareForRelease
  bindings_prepare_release
  self.stop_listen_to_keyboard
  @animation_proc=nil
  @completion_proc=nil
  @bindings=nil
  @tv_bindings=nil
  @events=nil
  @tableView.dataSource=nil
  @tableView.delegate=nil
  @tableView=nil
  @model=nil
end

#reload ⇒ Object 



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 59

def reload
  @tableView.reloadData
end

#reset_content_inset_bottom ⇒ Object 



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 358

def reset_content_inset_bottom
  @tableView.contentInset = UIEdgeInsetsZero
  @tableView.scrollIndicatorInsets = UIEdgeInsetsZero
  @expanding = false
  if @shrink_height
    set_content_inset_bottom(@shrink_height)
    @shrink_height = nil
  end
end

#scroll_to_index_path(index_path) ⇒ Object 



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 388

def scroll_to_index_path(index_path)
  @tableView.scrollToRowAtIndexPath(index_path, atScrollPosition: UITableViewScrollPositionBottom, animated: true)
  @index_path_to_scroll = nil
end

#set_content_inset_bottom(height) ⇒ Object 



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 368

def set_content_inset_bottom(height)
  @tableView.contentInset = UIEdgeInsetsMake(0,0,height,0)
  @tableView.scrollIndicatorInsets = UIEdgeInsetsMake(0,0,height,0)
  @shrinking = false
  if @index_path_to_scroll
    scroll_to_index_path(@index_path_to_scroll)
    @index_path_to_scroll = nil
  end
end

#shrink_table_view(note) ⇒ Object 



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 347

def shrink_table_view(note)
  # TODO: don't shrink when table frame bottom is above the keyboard
  @shrinking = true
  rect = note[UIKeyboardFrameEndUserInfoKey].CGRectValue
  if @expanding
    @shrink_height = rect.size.height
  else
    set_content_inset_bottom(rect.size.height)
  end
end

#stop_listen_to_keyboard ⇒ Object 



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 300

def stop_listen_to_keyboard
  @scroll_when_editing = false
  NSNotificationCenter.defaultCenter.removeObserver(self)
end

#tableView(tableView, heightForRowAtIndexPath: index_path) ⇒ Object 



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 68

def tableView(tableView, cellForRowAtIndexPath: index_path)
  field_set = field_set_at_index_path(index_path)
  type = field_set[:child_index].nil? ? field_set[:type] : field_set[:child_field][:type]
  cell_identifier = "CELL_IDENTIFIER_#{type.to_s}"
  cell=tableView.dequeueReusableCellWithIdentifier(cell_identifier)
  isReusedCell=!cell.nil?

  cell=@events[:build_cell].call(cell_identifier, type) unless isReusedCell
  weak_cell=WeakRef.new(cell)

  ui_field=@events[:update_cell].call(field_set, weak_cell, index_path) unless @events[:update_cell].nil?
  @events[:update_accessory].call(field_set, weak_cell, index_path, ui_field) unless @events[:update_accessory].nil?
  cell

end

#update_accessory_type_or_view(field_set, cell, index_path, ui_field) ⇒ Object 



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 201

def update_accessory_type_or_view(field_set, cell, index_path, ui_field)

  accessory = field_set[:child_index].nil? ? field_set[:accessory] : field_set[:child_field][:accessory]

  accessory_view = cell.accessoryView
  if accessory == :contact
    if accessory_view && accessory_view.buttonType == :contact.uibuttontype
      contact_button = accessory_view
    else
      contact_button = (@contact_buttons.pop || UIButton.contact)
      cell.accessoryView = contact_button
    end
    unhook(contact_button, :tapped)
    hook(contact_button, :tapped) do
      tableView(@tableView, didSelectRowAtIndexPath:index_path)
    end
  else
    if accessory_view && accessory_view.buttonType == :contact.uibuttontype
      @contact_buttons << accessory_view
      cell.accessoryView = nil
    end
    cell.accessoryType = (accessory || :none).uitablecellaccessory
    cell.accessoryView = nil
  end
end

#update_cell_height(field_set, index_path) ⇒ Object 



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 258

def update_cell_height(field_set, index_path)
  field_set = field_set[:child_field] unless field_set[:child_index].nil?
  if field_set[:type] == :big_label || field_set[:type] == :checkbox
    26 + 19 * (field_set[:lines] || 2)
  elsif field_set[:type] == :text_view
    110
  elsif field_set[:type] == :dynamic_label
    return 45 if @model.send(field_set[:name]).nil?
    width = 284
    width -= 20 unless field_set[:accessory].nil? || field_set[:accessory] == :none
    width -= 94 if field_set[:show_label]
    height = @model.send(field_set[:name]).sizeWithFont(UIFont.systemFontOfSize(14),
                                                        constrainedToSize: [width, 9999],
                                                        lineBreakMode: UILineBreakModeCharacterWrap).height + 20
    [height, 45].max
  else
    45
  end
end

#will_scroll_to_index_path(index_path) ⇒ Object 



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# File 'lib/tgios/ui_table_view_model_binding.rb', line 378

def will_scroll_to_index_path(index_path)
  if @scroll_when_editing
    if @shrinking
      @index_path_to_scroll = index_path
    else
      scroll_to_index_path(index_path)
    end
  end
end