| Class | PopUpMenu |
| In: |
lib/json/editor.rb
|
| Parent: | Object |
This class creates the popup menu, that opens when clicking onto the treeview.
Append a new node to the selected Hash or Array.
# File lib/json/editor.rb, line 388 def append_new_node(item) if parent = selection.selected parent_type = parent.type case parent_type when 'Hash' key, type, content = ask_for_hash_pair(parent) key or return iter = create_node(parent, 'Key', key) iter = create_node(iter, type, content) toplevel.display_status( "Added a (key, value)-pair to '#{parent_type}'.") window.change when 'Array' type, content = ask_for_element(parent) type or return iter = create_node(parent, type, content) window.change toplevel.display_status("Appendend an element to '#{parent_type}'.") else toplevel.display_status("Cannot append to '#{parent_type}'!") end else type, content = ask_for_element type or return iter = create_node(nil, type, content) window.change end end
Change the type or content of the selected node.
# File lib/json/editor.rb, line 265 def change_node(item) if current = selection.selected parent = current.parent old_type, old_content = current.type, current.content if ALL_TYPES.include?(old_type) @clipboard_data = Editor.model2data(current) type, content = ask_for_element(parent, current.type, current.content) if type current.type, current.content = type, content current.remove_subtree(model) toplevel.display_status("Changed a node in tree.") window.change end else toplevel.display_status( "Cannot change node of type #{old_type} in tree!") end end end
Recursively collapse/expand a subtree starting from the selected node.
# File lib/json/editor.rb, line 444 def collapse_expand(item) if current = selection.selected if row_expanded?(current.path) collapse_row(current.path) else expand_row(current.path, true) end else toplevel.display_status("Append a node into the root first!") end end
Copy the selected node and its subtree, and save it into the clipboard.
# File lib/json/editor.rb, line 305 def copy_node(item) if current = selection.selected if current and current.type == 'Key' @clipboard_data = { current.content => Editor.model2data(current.first_child) } else @clipboard_data = Editor.model2data(current) end window.change toplevel.display_status("Copied a node from tree.") end end
Create the menu.
# File lib/json/editor.rb, line 457 def create add_item("Change node", ?n, &method(:change_node)) add_separator add_item("Cut node", ?X, &method(:cut_node)) add_item("Copy node", ?C, &method(:copy_node)) add_item("Paste node (appending)", ?A, &method(:paste_node_appending)) add_item("Paste node (inserting before)", ?I, &method(:paste_node_inserting_before)) add_separator add_item("Append new node", ?a, &method(:append_new_node)) add_item("Insert new node before", ?i, &method(:insert_new_node)) add_separator add_item("Collapse/Expand node (recursively)", ?e, &method(:collapse_expand)) menu.show_all signal_connect(:button_press_event) do |widget, event| if event.kind_of? Gdk::EventButton and event.button == 3 menu.popup(nil, nil, event.button, event.time) end end signal_connect(:popup_menu) do menu.popup(nil, nil, 0, Gdk::Event::CURRENT_TIME) end end
Cut the selected node and its subtree, and save it into the clipboard.
# File lib/json/editor.rb, line 288 def cut_node(item) if current = selection.selected if current and current.type == 'Key' @clipboard_data = { current.content => Editor.model2data(current.first_child) } else @clipboard_data = Editor.model2data(current) end model.remove(current) window.change toplevel.display_status("Cut a node from tree.") end end
Insert a new node into an Array before the selected element.
# File lib/json/editor.rb, line 418 def insert_new_node(item) if current = selection.selected parent = current.parent or return parent_parent = parent.parent parent_type = parent.type if parent_type == 'Array' selected_index = parent.each_with_index do |c, i| break i if c == current end type, content = ask_for_element(parent) type or return iter = model.insert_before(parent, current) iter.type, iter.content = type, content toplevel.display_status("Inserted an element to " + "'#{parent_type}' before index #{selected_index}.") window.change else toplevel.display_status( "Cannot insert node below '#{parent_type}'!") end else toplevel.display_status("Append a node into the root first!") end end
Paste the data in the clipboard into the selected Array or Hash by appending it.
# File lib/json/editor.rb, line 321 def paste_node_appending(item) if current = selection.selected if @clipboard_data case current.type when 'Array' Editor.data2model(@clipboard_data, model, current) expand_collapse(current) when 'Hash' if @clipboard_data.is_a? Hash parent = current.parent hash = Editor.model2data(current) model.remove(current) hash.update(@clipboard_data) Editor.data2model(hash, model, parent) if parent expand_collapse(parent) elsif @expanded expand_all end window.change else toplevel.display_status( "Cannot paste non-#{current.type} data into '#{current.type}'!") end else toplevel.display_status( "Cannot paste node below '#{current.type}'!") end else toplevel.display_status("Nothing to paste in clipboard!") end else toplevel.display_status("Append a node into the root first!") end end
Paste the data in the clipboard into the selected Array inserting it before the selected element.
# File lib/json/editor.rb, line 359 def paste_node_inserting_before(item) if current = selection.selected if @clipboard_data parent = current.parent or return parent_type = parent.type if parent_type == 'Array' selected_index = parent.each_with_index do |c, i| break i if c == current end Editor.data2model(@clipboard_data, model, parent) do |m| m.insert_before(parent, current) end expand_collapse(current) toplevel.display_status("Inserted an element to " + "'#{parent_type}' before index #{selected_index}.") window.change else toplevel.display_status( "Cannot insert node below '#{parent_type}'!") end else toplevel.display_status("Nothing to paste in clipboard!") end else toplevel.display_status("Append a node into the root first!") end end