Class: Cosmos::TelemetryChooser

Inherits:
Qt::Widget show all
Defined in:
lib/cosmos/gui/choosers/telemetry_chooser.rb

Overview

Provides dropdowns to select from all the defined Targets, Packets, and Items. Callbacks can be added when any of the dropdown values are changed as well as when the select button is pressed. Provides an option to orient the dropdowns horizontally or vertically.

Constant Summary collapse

COMBOBOX_BUTTON_WIDTH =

Width of the button in the Combobox

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Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(parent, orientation = Qt::Horizontal, choose_item = true, select_button = true, support_latest = false, fill = false) ⇒ TelemetryChooser

Returns a new instance of TelemetryChooser.

Parameters:

  • parent (Qt::Widget) —

    Parent of this widget

  • orientation (Integer) (defaults to: Qt::Horizontal) —

    Must be Qt::Horizontal or Qt::Vertical

  • choose_item (Boolean) (defaults to: true) —

    Whether to allow choosing items. Choosing targets and packets are alway enabled.

  • select_button (Boolean) (defaults to: true) —

    Whether to display the "Select" button. You can disable the button if you just want to implement the dropdown change callbacks.

  • support_latest (Boolean) (defaults to: false) —

    Whether to add LATEST to the list of packets



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# File 'lib/cosmos/gui/choosers/telemetry_chooser.rb', line 55

def initialize(
  parent,
  orientation = Qt::Horizontal,
  choose_item = true,
  select_button = true,
  support_latest = false,
  fill = false
)

  super(parent)
  if orientation == Qt::Horizontal
    # Horizontal Frame for overall widget
    @overall_frame = Qt::HBoxLayout.new(self)
  else
    # Vertical Frame for overall widget
    @overall_frame = Qt::VBoxLayout.new(self)
  end
  @overall_frame.setContentsMargins(0,0,0,0)

  # Target Selection
  @target_layout = Qt::HBoxLayout.new
  @target_label = Qt::Label.new('Target:')
  @target_label.setSizePolicy(Qt::SizePolicy::Fixed, Qt::SizePolicy::Fixed) if fill
  @target_layout.addWidget(@target_label)
  @target_layout.addStretch unless fill
  @target_combobox = Qt::ComboBox.new
  # This allows the comboboxes to automatically adjust when we change the contents - awesome!
  @target_combobox.setSizeAdjustPolicy(Qt::ComboBox::AdjustToContents)
  @target_combobox.connect(SIGNAL('activated(int)')) do
    update_packets()
    @target_changed_callback.call(target_name()) if @target_changed_callback
  end
  @target_layout.addWidget(@target_combobox)
  @overall_frame.addLayout(@target_layout)

  # Packet Selection
  @packet_layout = Qt::HBoxLayout.new
  @packet_label = Qt::Label.new('Packet:')
  @packet_label.setSizePolicy(Qt::SizePolicy::Fixed, Qt::SizePolicy::Fixed) if fill
  @packet_layout.addWidget(@packet_label)
  @packet_layout.addStretch unless fill
  @packet_combobox = Qt::ComboBox.new
  @packet_combobox.setSizeAdjustPolicy(Qt::ComboBox::AdjustToContents)
  @packet_combobox.connect(SIGNAL('activated(int)')) do
    update_items()
    @packet_changed_callback.call(target_name(), packet_name()) if @packet_changed_callback
  end
  @packet_layout.addWidget(@packet_combobox)
  @overall_frame.addLayout(@packet_layout)

  if choose_item
    # Item Selection
    @item_layout = Qt::HBoxLayout.new
    @item_label = Qt::Label.new('Item:')
    @item_label.setSizePolicy(Qt::SizePolicy::Fixed, Qt::SizePolicy::Fixed) if fill
    @item_layout.addWidget(@item_label)
    @item_layout.addStretch unless fill
    @item_combobox = Qt::ComboBox.new
    @item_combobox.setSizeAdjustPolicy(Qt::ComboBox::AdjustToContents)
    @item_combobox.connect(SIGNAL('activated(int)')) do
      @item_changed_callback.call(target_name(), packet_name(), item_name()) if @item_changed_callback
    end
    @item_layout.addWidget(@item_combobox)
    @overall_frame.addLayout(@item_layout)
  end

  if select_button
    # Select Button
    #@overall_frame.addStretch()
    @select_button = Qt::PushButton.new('Select')
    @select_button.connect(SIGNAL('clicked()')) do
      @select_button_callback.call(target_name(), packet_name(), item_name()) if @select_button_callback
    end
    @overall_frame.addWidget(@select_button)
  end

  # Initialize instance variables
  @target_changed_callback = nil
  @packet_changed_callback = nil
  @item_changed_callback = nil
  @select_button_callback = nil
  @support_latest = support_latest
  update()
end

Instance Attribute Details

#item_changed_callback ⇒ Object

Callback called when the item is changed - call(target_name, packet_name, item_name)



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# File 'lib/cosmos/gui/choosers/telemetry_chooser.rb', line 33

def item_changed_callback
  @item_changed_callback
end

#item_label ⇒ Object

Label for the item



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# File 'lib/cosmos/gui/choosers/telemetry_chooser.rb', line 45

def item_label
  @item_label
end

#packet_changed_callback ⇒ Object

Callback called when the packet is changed - call(target_name, packet_name)



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# File 'lib/cosmos/gui/choosers/telemetry_chooser.rb', line 30

def packet_changed_callback
  @packet_changed_callback
end

#packet_label ⇒ Object

Label for the packet



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# File 'lib/cosmos/gui/choosers/telemetry_chooser.rb', line 42

def packet_label
  @packet_label
end

#select_button_callback ⇒ Object

Callback called when the select button is pressed - call(target_name, packet_name, item_name)



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# File 'lib/cosmos/gui/choosers/telemetry_chooser.rb', line 36

def select_button_callback
  @select_button_callback
end

#target_changed_callback ⇒ Object

Callback called when the target is changed - call(target_name)



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# File 'lib/cosmos/gui/choosers/telemetry_chooser.rb', line 27

def target_changed_callback
  @target_changed_callback
end

#target_label ⇒ Object

Label for the target



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# File 'lib/cosmos/gui/choosers/telemetry_chooser.rb', line 39

def target_label
  @target_label
end

Instance Method Details

#button_text=(button_text) ⇒ Object

Set the text of the button



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# File 'lib/cosmos/gui/choosers/telemetry_chooser.rb', line 156

def button_text=(button_text)
  @select_button.setText(button_text)
end

#item_name ⇒ Object

Returns the selected item name



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# File 'lib/cosmos/gui/choosers/telemetry_chooser.rb', line 171

def item_name
  @item_combobox.text
end

#item_names ⇒ Object

Returns the list of all item names in the item combobox



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# File 'lib/cosmos/gui/choosers/telemetry_chooser.rb', line 190

def item_names
  item_names_array = []
  @item_combobox.each {|item_text, item_data| item_names_array << item_text}
  item_names_array
end

#packet_name ⇒ Object

Returns the selected packet name



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# File 'lib/cosmos/gui/choosers/telemetry_chooser.rb', line 166

def packet_name
  @packet_combobox.text
end

#packet_names ⇒ Object

Returns the list of all packet names in the packet combobox



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# File 'lib/cosmos/gui/choosers/telemetry_chooser.rb', line 183

def packet_names
  packet_names_array = []
  @packet_combobox.each {|item_text, item_data| packet_names_array << item_text}
  packet_names_array
end

#set_item(target_name, packet_name, item_name) ⇒ Object

Sets the current item



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# File 'lib/cosmos/gui/choosers/telemetry_chooser.rb', line 228

def set_item(target_name, packet_name, item_name)
  # Set the desired packet
  set_packet(target_name, packet_name)

  # Select desired item
  index = 0
  found = false
  @item_combobox.each do |item_text, item_data|
    if item_name.upcase == item_text.upcase
      found = true
      break
    end
    index += 1
  end
  Kernel.raise "TelemetryChooser unknown item_name #{item_name}" unless found
  @item_combobox.setCurrentIndex(index)
end

#set_packet(target_name, packet_name) ⇒ Object

Sets the current packet



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# File 'lib/cosmos/gui/choosers/telemetry_chooser.rb', line 197

def set_packet(target_name, packet_name)
  # Select desired target
  index = 0
  found = false
  @target_combobox.each do |item_text, item_data|
    if target_name.upcase == item_text.upcase
      found = true
      break
    end
    index += 1
  end
  Kernel.raise "TelemetryChooser unknown target_name #{target_name}" unless found
  @target_combobox.setCurrentIndex(index)
  update_packets()

  # Select desired packet
  index = 0
  found = false
  @packet_combobox.each do |item_text, item_data|
    if packet_name.upcase == item_text.upcase
      found = true
      break
    end
    index += 1
  end
  Kernel.raise "TelemetryChooser unknown packet_name #{packet_name}" unless found
  @packet_combobox.setCurrentIndex(index)
  update_items()
end

#target_name ⇒ Object

Returns the selected target name



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# File 'lib/cosmos/gui/choosers/telemetry_chooser.rb', line 161

def target_name
  @target_combobox.text
end

#target_names ⇒ Object

Returns the list of all target names in the target combobox



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# File 'lib/cosmos/gui/choosers/telemetry_chooser.rb', line 176

def target_names
  target_names_array = []
  @target_combobox.each {|item_text, item_data| target_names_array << item_text}
  target_names_array
end

#update ⇒ Object

Update items



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# File 'lib/cosmos/gui/choosers/telemetry_chooser.rb', line 141

def update
  current_target_name = target_name()
  current_packet_name = packet_name()
  current_item_name = item_name()
  update_targets()
  if current_target_name and current_packet_name and current_item_name
    begin
      set_item(current_target_name, current_packet_name, current_item_name)
    rescue Exception
      # Oh well - Tried to keep the same item
    end
  end
end