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-rw-r--r--ext/json/lib/json/editor.rb1371
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diff --git a/ext/json/lib/json/editor.rb b/ext/json/lib/json/editor.rb
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--- a/ext/json/lib/json/editor.rb
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-# To use the GUI JSON editor, start the edit_json.rb executable script. It
-# requires ruby-gtk to be installed.
-
-require 'gtk2'
-require 'iconv'
-require 'json'
-require 'rbconfig'
-require 'open-uri'
-
-module JSON
- module Editor
- include Gtk
-
- # Beginning of the editor window title
- TITLE = 'JSON Editor'.freeze
-
- # Columns constants
- ICON_COL, TYPE_COL, CONTENT_COL = 0, 1, 2
-
- # JSON primitive types (Containers)
- CONTAINER_TYPES = %w[Array Hash].sort
- # All JSON primitive types
- ALL_TYPES = (%w[TrueClass FalseClass Numeric String NilClass] +
- CONTAINER_TYPES).sort
-
- # The Nodes necessary for the tree representation of a JSON document
- ALL_NODES = (ALL_TYPES + %w[Key]).sort
-
- DEFAULT_DIALOG_KEY_PRESS_HANDLER = lambda do |dialog, event|
- case event.keyval
- when Gdk::Keyval::GDK_Return
- dialog.response Dialog::RESPONSE_ACCEPT
- when Gdk::Keyval::GDK_Escape
- dialog.response Dialog::RESPONSE_REJECT
- end
- end
-
- # Returns the Gdk::Pixbuf of the icon named _name_ from the icon cache.
- def Editor.fetch_icon(name)
- @icon_cache ||= {}
- unless @icon_cache.key?(name)
- path = File.dirname(__FILE__)
- @icon_cache[name] = Gdk::Pixbuf.new(File.join(path, name + '.xpm'))
- end
- @icon_cache[name]
- end
-
- # Opens an error dialog on top of _window_ showing the error message
- # _text_.
- def Editor.error_dialog(window, text)
- dialog = MessageDialog.new(window, Dialog::MODAL,
- MessageDialog::ERROR,
- MessageDialog::BUTTONS_CLOSE, text)
- dialog.show_all
- dialog.run
- rescue TypeError
- dialog = MessageDialog.new(Editor.window, Dialog::MODAL,
- MessageDialog::ERROR,
- MessageDialog::BUTTONS_CLOSE, text)
- dialog.show_all
- dialog.run
- ensure
- dialog.destroy if dialog
- end
-
- # Opens a yes/no question dialog on top of _window_ showing the error
- # message _text_. If yes was answered _true_ is returned, otherwise
- # _false_.
- def Editor.question_dialog(window, text)
- dialog = MessageDialog.new(window, Dialog::MODAL,
- MessageDialog::QUESTION,
- MessageDialog::BUTTONS_YES_NO, text)
- dialog.show_all
- dialog.run do |response|
- return Gtk::Dialog::RESPONSE_YES === response
- end
- ensure
- dialog.destroy if dialog
- end
-
- # Convert the tree model starting from Gtk::TreeIter _iter_ into a Ruby
- # data structure and return it.
- def Editor.model2data(iter)
- return nil if iter.nil?
- case iter.type
- when 'Hash'
- hash = {}
- iter.each { |c| hash[c.content] = Editor.model2data(c.first_child) }
- hash
- when 'Array'
- array = Array.new(iter.n_children)
- iter.each_with_index { |c, i| array[i] = Editor.model2data(c) }
- array
- when 'Key'
- iter.content
- when 'String'
- iter.content
- when 'Numeric'
- content = iter.content
- if /\./.match(content)
- content.to_f
- else
- content.to_i
- end
- when 'TrueClass'
- true
- when 'FalseClass'
- false
- when 'NilClass'
- nil
- else
- fail "Unknown type found in model: #{iter.type}"
- end
- end
-
- # Convert the Ruby data structure _data_ into tree model data for Gtk and
- # returns the whole model. If the parameter _model_ wasn't given a new
- # Gtk::TreeStore is created as the model. The _parent_ parameter specifies
- # the parent node (iter, Gtk:TreeIter instance) to which the data is
- # appended, alternativeley the result of the yielded block is used as iter.
- def Editor.data2model(data, model = nil, parent = nil)
- model ||= TreeStore.new(Gdk::Pixbuf, String, String)
- iter = if block_given?
- yield model
- else
- model.append(parent)
- end
- case data
- when Hash
- iter.type = 'Hash'
- data.sort.each do |key, value|
- pair_iter = model.append(iter)
- pair_iter.type = 'Key'
- pair_iter.content = key.to_s
- Editor.data2model(value, model, pair_iter)
- end
- when Array
- iter.type = 'Array'
- data.each do |value|
- Editor.data2model(value, model, iter)
- end
- when Numeric
- iter.type = 'Numeric'
- iter.content = data.to_s
- when String, true, false, nil
- iter.type = data.class.name
- iter.content = data.nil? ? 'null' : data.to_s
- else
- iter.type = 'String'
- iter.content = data.to_s
- end
- model
- end
-
- # The Gtk::TreeIter class is reopened and some auxiliary methods are added.
- class Gtk::TreeIter
- include Enumerable
-
- # Traverse each of this Gtk::TreeIter instance's children
- # and yield to them.
- def each
- n_children.times { |i| yield nth_child(i) }
- end
-
- # Recursively traverse all nodes of this Gtk::TreeIter's subtree
- # (including self) and yield to them.
- def recursive_each(&block)
- yield self
- each do |i|
- i.recursive_each(&block)
- end
- end
-
- # Remove the subtree of this Gtk::TreeIter instance from the
- # model _model_.
- def remove_subtree(model)
- while current = first_child
- model.remove(current)
- end
- end
-
- # Returns the type of this node.
- def type
- self[TYPE_COL]
- end
-
- # Sets the type of this node to _value_. This implies setting
- # the respective icon accordingly.
- def type=(value)
- self[TYPE_COL] = value
- self[ICON_COL] = Editor.fetch_icon(value)
- end
-
- # Returns the content of this node.
- def content
- self[CONTENT_COL]
- end
-
- # Sets the content of this node to _value_.
- def content=(value)
- self[CONTENT_COL] = value
- end
- end
-
- # This module bundles some method, that can be used to create a menu. It
- # should be included into the class in question.
- module MenuExtension
- include Gtk
-
- # Creates a Menu, that includes MenuExtension. _treeview_ is the
- # Gtk::TreeView, on which it operates.
- def initialize(treeview)
- @treeview = treeview
- @menu = Menu.new
- end
-
- # Returns the Gtk::TreeView of this menu.
- attr_reader :treeview
-
- # Returns the menu.
- attr_reader :menu
-
- # Adds a Gtk::SeparatorMenuItem to this instance's #menu.
- def add_separator
- menu.append SeparatorMenuItem.new
- end
-
- # Adds a Gtk::MenuItem to this instance's #menu. _label_ is the label
- # string, _klass_ is the item type, and _callback_ is the procedure, that
- # is called if the _item_ is activated.
- def add_item(label, keyval = nil, klass = MenuItem, &callback)
- label = "#{label} (C-#{keyval.chr})" if keyval
- item = klass.new(label)
- item.signal_connect(:activate, &callback)
- if keyval
- self.signal_connect(:'key-press-event') do |item, event|
- if event.state & Gdk::Window::ModifierType::CONTROL_MASK != 0 and
- event.keyval == keyval
- callback.call item
- end
- end
- end
- menu.append item
- item
- end
-
- # This method should be implemented in subclasses to create the #menu of
- # this instance. It has to be called after an instance of this class is
- # created, to build the menu.
- def create
- raise NotImplementedError
- end
-
- def method_missing(*a, &b)
- treeview.__send__(*a, &b)
- end
- end
-
- # This class creates the popup menu, that opens when clicking onto the
- # treeview.
- class PopUpMenu
- include MenuExtension
-
- # Change the type or content of the selected node.
- 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
-
- # Cut the selected node and its subtree, and save it into the
- # clipboard.
- 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
-
- # Copy the selected node and its subtree, and save it into the
- # clipboard.
- 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
-
- # Paste the data in the clipboard into the selected Array or Hash by
- # appending it.
- 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.
- 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
-
- # Append a new node to the selected Hash or Array.
- 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
-
- # Insert a new node into an Array before the selected element.
- 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
-
- # Recursively collapse/expand a subtree starting from the selected node.
- 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
-
- # Create the menu.
- 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
- end
-
- # This class creates the File pulldown menu.
- class FileMenu
- include MenuExtension
-
- # Clear the model and filename, but ask to save the JSON document, if
- # unsaved changes have occured.
- def new(item)
- window.clear
- end
-
- # Open a file and load it into the editor. Ask to save the JSON document
- # first, if unsaved changes have occured.
- def open(item)
- window.file_open
- end
-
- def open_location(item)
- window.location_open
- end
-
- # Revert the current JSON document in the editor to the saved version.
- def revert(item)
- window.instance_eval do
- @filename and file_open(@filename)
- end
- end
-
- # Save the current JSON document.
- def save(item)
- window.file_save
- end
-
- # Save the current JSON document under the given filename.
- def save_as(item)
- window.file_save_as
- end
-
- # Quit the editor, after asking to save any unsaved changes first.
- def quit(item)
- window.quit
- end
-
- # Create the menu.
- def create
- title = MenuItem.new('File')
- title.submenu = menu
- add_item('New', &method(:new))
- add_item('Open', ?o, &method(:open))
- add_item('Open location', ?l, &method(:open_location))
- add_item('Revert', &method(:revert))
- add_separator
- add_item('Save', ?s, &method(:save))
- add_item('Save As', ?S, &method(:save_as))
- add_separator
- add_item('Quit', ?q, &method(:quit))
- title
- end
- end
-
- # This class creates the Edit pulldown menu.
- class EditMenu
- include MenuExtension
-
- # Copy data from model into primary clipboard.
- def copy(item)
- data = Editor.model2data(model.iter_first)
- json = JSON.pretty_generate(data, :max_nesting => false)
- c = Gtk::Clipboard.get(Gdk::Selection::PRIMARY)
- c.text = json
- end
-
- # Copy json text from primary clipboard into model.
- def paste(item)
- c = Gtk::Clipboard.get(Gdk::Selection::PRIMARY)
- if json = c.wait_for_text
- window.ask_save if @changed
- begin
- window.edit json
- rescue JSON::ParserError
- window.clear
- end
- end
- end
-
- # Find a string in all nodes' contents and select the found node in the
- # treeview.
- def find(item)
- @search = ask_for_find_term(@search) or return
- iter = model.get_iter('0') or return
- iter.recursive_each do |i|
- if @iter
- if @iter != i
- next
- else
- @iter = nil
- next
- end
- elsif @search.match(i[CONTENT_COL])
- set_cursor(i.path, nil, false)
- @iter = i
- break
- end
- end
- end
-
- # Repeat the last search given by #find.
- def find_again(item)
- @search or return
- iter = model.get_iter('0')
- iter.recursive_each do |i|
- if @iter
- if @iter != i
- next
- else
- @iter = nil
- next
- end
- elsif @search.match(i[CONTENT_COL])
- set_cursor(i.path, nil, false)
- @iter = i
- break
- end
- end
- end
-
- # Sort (Reverse sort) all elements of the selected array by the given
- # expression. _x_ is the element in question.
- def sort(item)
- if current = selection.selected
- if current.type == 'Array'
- parent = current.parent
- ary = Editor.model2data(current)
- order, reverse = ask_for_order
- order or return
- begin
- block = eval "lambda { |x| #{order} }"
- if reverse
- ary.sort! { |a,b| block[b] <=> block[a] }
- else
- ary.sort! { |a,b| block[a] <=> block[b] }
- end
- rescue => e
- Editor.error_dialog(self, "Failed to sort Array with #{order}: #{e}!")
- else
- Editor.data2model(ary, model, parent) do |m|
- m.insert_before(parent, current)
- end
- model.remove(current)
- expand_collapse(parent)
- window.change
- toplevel.display_status("Array has been sorted.")
- end
- else
- toplevel.display_status("Only Array nodes can be sorted!")
- end
- else
- toplevel.display_status("Select an Array to sort first!")
- end
- end
-
- # Create the menu.
- def create
- title = MenuItem.new('Edit')
- title.submenu = menu
- add_item('Copy', ?c, &method(:copy))
- add_item('Paste', ?v, &method(:paste))
- add_separator
- add_item('Find', ?f, &method(:find))
- add_item('Find Again', ?g, &method(:find_again))
- add_separator
- add_item('Sort', ?S, &method(:sort))
- title
- end
- end
-
- class OptionsMenu
- include MenuExtension
-
- # Collapse/Expand all nodes by default.
- def collapsed_nodes(item)
- if expanded
- self.expanded = false
- collapse_all
- else
- self.expanded = true
- expand_all
- end
- end
-
- # Toggle pretty saving mode on/off.
- def pretty_saving(item)
- @pretty_item.toggled
- window.change
- end
-
- attr_reader :pretty_item
-
- # Create the menu.
- def create
- title = MenuItem.new('Options')
- title.submenu = menu
- add_item('Collapsed nodes', nil, CheckMenuItem, &method(:collapsed_nodes))
- @pretty_item = add_item('Pretty saving', nil, CheckMenuItem,
- &method(:pretty_saving))
- @pretty_item.active = true
- window.unchange
- title
- end
- end
-
- # This class inherits from Gtk::TreeView, to configure it and to add a lot
- # of behaviour to it.
- class JSONTreeView < Gtk::TreeView
- include Gtk
-
- # Creates a JSONTreeView instance, the parameter _window_ is
- # a MainWindow instance and used for self delegation.
- def initialize(window)
- @window = window
- super(TreeStore.new(Gdk::Pixbuf, String, String))
- self.selection.mode = SELECTION_BROWSE
-
- @expanded = false
- self.headers_visible = false
- add_columns
- add_popup_menu
- end
-
- # Returns the MainWindow instance of this JSONTreeView.
- attr_reader :window
-
- # Returns true, if nodes are autoexpanding, false otherwise.
- attr_accessor :expanded
-
- private
-
- def add_columns
- cell = CellRendererPixbuf.new
- column = TreeViewColumn.new('Icon', cell,
- 'pixbuf' => ICON_COL
- )
- append_column(column)
-
- cell = CellRendererText.new
- column = TreeViewColumn.new('Type', cell,
- 'text' => TYPE_COL
- )
- append_column(column)
-
- cell = CellRendererText.new
- cell.editable = true
- column = TreeViewColumn.new('Content', cell,
- 'text' => CONTENT_COL
- )
- cell.signal_connect(:edited, &method(:cell_edited))
- append_column(column)
- end
-
- def unify_key(iter, key)
- return unless iter.type == 'Key'
- parent = iter.parent
- if parent.any? { |c| c != iter and c.content == key }
- old_key = key
- i = 0
- begin
- key = sprintf("%s.%d", old_key, i += 1)
- end while parent.any? { |c| c != iter and c.content == key }
- end
- iter.content = key
- end
-
- def cell_edited(cell, path, value)
- iter = model.get_iter(path)
- case iter.type
- when 'Key'
- unify_key(iter, value)
- toplevel.display_status('Key has been changed.')
- when 'FalseClass'
- value.downcase!
- if value == 'true'
- iter.type, iter.content = 'TrueClass', 'true'
- end
- when 'TrueClass'
- value.downcase!
- if value == 'false'
- iter.type, iter.content = 'FalseClass', 'false'
- end
- when 'Numeric'
- iter.content =
- if value == 'Infinity'
- value
- else
- (Integer(value) rescue Float(value) rescue 0).to_s
- end
- when 'String'
- iter.content = value
- when 'Hash', 'Array'
- return
- else
- fail "Unknown type found in model: #{iter.type}"
- end
- window.change
- end
-
- def configure_value(value, type)
- value.editable = false
- case type
- when 'Array', 'Hash'
- value.text = ''
- when 'TrueClass'
- value.text = 'true'
- when 'FalseClass'
- value.text = 'false'
- when 'NilClass'
- value.text = 'null'
- when 'Numeric', 'String'
- value.text ||= ''
- value.editable = true
- else
- raise ArgumentError, "unknown type '#{type}' encountered"
- end
- end
-
- def add_popup_menu
- menu = PopUpMenu.new(self)
- menu.create
- end
-
- public
-
- # Create a _type_ node with content _content_, and add it to _parent_
- # in the model. If _parent_ is nil, create a new model and put it into
- # the editor treeview.
- def create_node(parent, type, content)
- iter = if parent
- model.append(parent)
- else
- new_model = Editor.data2model(nil)
- toplevel.view_new_model(new_model)
- new_model.iter_first
- end
- iter.type, iter.content = type, content
- expand_collapse(parent) if parent
- iter
- end
-
- # Ask for a hash key, value pair to be added to the Hash node _parent_.
- def ask_for_hash_pair(parent)
- key_input = type_input = value_input = nil
-
- dialog = Dialog.new("New (key, value) pair for Hash", nil, nil,
- [ Stock::OK, Dialog::RESPONSE_ACCEPT ],
- [ Stock::CANCEL, Dialog::RESPONSE_REJECT ]
- )
- dialog.width_request = 640
-
- hbox = HBox.new(false, 5)
- hbox.pack_start(Label.new("Key:"), false)
- hbox.pack_start(key_input = Entry.new)
- key_input.text = @key || ''
- dialog.vbox.pack_start(hbox, false)
- key_input.signal_connect(:activate) do
- if parent.any? { |c| c.content == key_input.text }
- toplevel.display_status('Key already exists in Hash!')
- key_input.text = ''
- else
- toplevel.display_status('Key has been changed.')
- end
- end
-
- hbox = HBox.new(false, 5)
- hbox.pack_start(Label.new("Type:"), false)
- hbox.pack_start(type_input = ComboBox.new(true))
- ALL_TYPES.each { |t| type_input.append_text(t) }
- type_input.active = @type || 0
- dialog.vbox.pack_start(hbox, false)
-
- type_input.signal_connect(:changed) do
- value_input.editable = false
- case ALL_TYPES[type_input.active]
- when 'Array', 'Hash'
- value_input.text = ''
- when 'TrueClass'
- value_input.text = 'true'
- when 'FalseClass'
- value_input.text = 'false'
- when 'NilClass'
- value_input.text = 'null'
- else
- value_input.text = ''
- value_input.editable = true
- end
- end
-
- hbox = HBox.new(false, 5)
- hbox.pack_start(Label.new("Value:"), false)
- hbox.pack_start(value_input = Entry.new)
- value_input.width_chars = 60
- value_input.text = @value || ''
- dialog.vbox.pack_start(hbox, false)
-
- dialog.signal_connect(:'key-press-event', &DEFAULT_DIALOG_KEY_PRESS_HANDLER)
- dialog.show_all
- self.focus = dialog
- dialog.run do |response|
- if response == Dialog::RESPONSE_ACCEPT
- @key = key_input.text
- type = ALL_TYPES[@type = type_input.active]
- content = value_input.text
- return @key, type, content
- end
- end
- return
- ensure
- dialog.destroy
- end
-
- # Ask for an element to be appended _parent_.
- def ask_for_element(parent = nil, default_type = nil, value_text = @content)
- type_input = value_input = nil
-
- dialog = Dialog.new(
- "New element into #{parent ? parent.type : 'root'}",
- nil, nil,
- [ Stock::OK, Dialog::RESPONSE_ACCEPT ],
- [ Stock::CANCEL, Dialog::RESPONSE_REJECT ]
- )
- hbox = HBox.new(false, 5)
- hbox.pack_start(Label.new("Type:"), false)
- hbox.pack_start(type_input = ComboBox.new(true))
- default_active = 0
- types = parent ? ALL_TYPES : CONTAINER_TYPES
- types.each_with_index do |t, i|
- type_input.append_text(t)
- if t == default_type
- default_active = i
- end
- end
- type_input.active = default_active
- dialog.vbox.pack_start(hbox, false)
- type_input.signal_connect(:changed) do
- configure_value(value_input, types[type_input.active])
- end
-
- hbox = HBox.new(false, 5)
- hbox.pack_start(Label.new("Value:"), false)
- hbox.pack_start(value_input = Entry.new)
- value_input.width_chars = 60
- value_input.text = value_text if value_text
- configure_value(value_input, types[type_input.active])
-
- dialog.vbox.pack_start(hbox, false)
-
- dialog.signal_connect(:'key-press-event', &DEFAULT_DIALOG_KEY_PRESS_HANDLER)
- dialog.show_all
- self.focus = dialog
- dialog.run do |response|
- if response == Dialog::RESPONSE_ACCEPT
- type = types[type_input.active]
- @content = case type
- when 'Numeric'
- if (t = value_input.text) == 'Infinity'
- 1 / 0.0
- else
- Integer(t) rescue Float(t) rescue 0
- end
- else
- value_input.text
- end.to_s
- return type, @content
- end
- end
- return
- ensure
- dialog.destroy if dialog
- end
-
- # Ask for an order criteria for sorting, using _x_ for the element in
- # question. Returns the order criterium, and true/false for reverse
- # sorting.
- def ask_for_order
- dialog = Dialog.new(
- "Give an order criterium for 'x'.",
- nil, nil,
- [ Stock::OK, Dialog::RESPONSE_ACCEPT ],
- [ Stock::CANCEL, Dialog::RESPONSE_REJECT ]
- )
- hbox = HBox.new(false, 5)
-
- hbox.pack_start(Label.new("Order:"), false)
- hbox.pack_start(order_input = Entry.new)
- order_input.text = @order || 'x'
- order_input.width_chars = 60
-
- hbox.pack_start(reverse_checkbox = CheckButton.new('Reverse'), false)
-
- dialog.vbox.pack_start(hbox, false)
-
- dialog.signal_connect(:'key-press-event', &DEFAULT_DIALOG_KEY_PRESS_HANDLER)
- dialog.show_all
- self.focus = dialog
- dialog.run do |response|
- if response == Dialog::RESPONSE_ACCEPT
- return @order = order_input.text, reverse_checkbox.active?
- end
- end
- return
- ensure
- dialog.destroy if dialog
- end
-
- # Ask for a find term to search for in the tree. Returns the term as a
- # string.
- def ask_for_find_term(search = nil)
- dialog = Dialog.new(
- "Find a node matching regex in tree.",
- nil, nil,
- [ Stock::OK, Dialog::RESPONSE_ACCEPT ],
- [ Stock::CANCEL, Dialog::RESPONSE_REJECT ]
- )
- hbox = HBox.new(false, 5)
-
- hbox.pack_start(Label.new("Regex:"), false)
- hbox.pack_start(regex_input = Entry.new)
- hbox.pack_start(icase_checkbox = CheckButton.new('Icase'), false)
- regex_input.width_chars = 60
- if search
- regex_input.text = search.source
- icase_checkbox.active = search.casefold?
- end
-
- dialog.vbox.pack_start(hbox, false)
-
- dialog.signal_connect(:'key-press-event', &DEFAULT_DIALOG_KEY_PRESS_HANDLER)
- dialog.show_all
- self.focus = dialog
- dialog.run do |response|
- if response == Dialog::RESPONSE_ACCEPT
- begin
- return Regexp.new(regex_input.text, icase_checkbox.active? ? Regexp::IGNORECASE : 0)
- rescue => e
- Editor.error_dialog(self, "Evaluation of regex /#{regex_input.text}/ failed: #{e}!")
- return
- end
- end
- end
- return
- ensure
- dialog.destroy if dialog
- end
-
- # Expand or collapse row pointed to by _iter_ according
- # to the #expanded attribute.
- def expand_collapse(iter)
- if expanded
- expand_row(iter.path, true)
- else
- collapse_row(iter.path)
- end
- end
- end
-
- # The editor main window
- class MainWindow < Gtk::Window
- include Gtk
-
- def initialize(encoding)
- @changed = false
- @encoding = encoding
- super(TOPLEVEL)
- display_title
- set_default_size(800, 600)
- signal_connect(:delete_event) { quit }
-
- vbox = VBox.new(false, 0)
- add(vbox)
- #vbox.border_width = 0
-
- @treeview = JSONTreeView.new(self)
- @treeview.signal_connect(:'cursor-changed') do
- display_status('')
- end
-
- menu_bar = create_menu_bar
- vbox.pack_start(menu_bar, false, false, 0)
-
- sw = ScrolledWindow.new(nil, nil)
- sw.shadow_type = SHADOW_ETCHED_IN
- sw.set_policy(POLICY_AUTOMATIC, POLICY_AUTOMATIC)
- vbox.pack_start(sw, true, true, 0)
- sw.add(@treeview)
-
- @status_bar = Statusbar.new
- vbox.pack_start(@status_bar, false, false, 0)
-
- @filename ||= nil
- if @filename
- data = read_data(@filename)
- view_new_model Editor.data2model(data)
- end
-
- signal_connect(:button_release_event) do |_,event|
- if event.button == 2
- c = Gtk::Clipboard.get(Gdk::Selection::PRIMARY)
- if url = c.wait_for_text
- location_open url
- end
- false
- else
- true
- end
- end
- end
-
- # Creates the menu bar with the pulldown menus and returns it.
- def create_menu_bar
- menu_bar = MenuBar.new
- @file_menu = FileMenu.new(@treeview)
- menu_bar.append @file_menu.create
- @edit_menu = EditMenu.new(@treeview)
- menu_bar.append @edit_menu.create
- @options_menu = OptionsMenu.new(@treeview)
- menu_bar.append @options_menu.create
- menu_bar
- end
-
- # Sets editor status to changed, to indicate that the edited data
- # containts unsaved changes.
- def change
- @changed = true
- display_title
- end
-
- # Sets editor status to unchanged, to indicate that the edited data
- # doesn't containt unsaved changes.
- def unchange
- @changed = false
- display_title
- end
-
- # Puts a new model _model_ into the Gtk::TreeView to be edited.
- def view_new_model(model)
- @treeview.model = model
- @treeview.expanded = true
- @treeview.expand_all
- unchange
- end
-
- # Displays _text_ in the status bar.
- def display_status(text)
- @cid ||= nil
- @status_bar.pop(@cid) if @cid
- @cid = @status_bar.get_context_id('dummy')
- @status_bar.push(@cid, text)
- end
-
- # Opens a dialog, asking, if changes should be saved to a file.
- def ask_save
- if Editor.question_dialog(self,
- "Unsaved changes to JSON model. Save?")
- if @filename
- file_save
- else
- file_save_as
- end
- end
- end
-
- # Quit this editor, that is, leave this editor's main loop.
- def quit
- ask_save if @changed
- if Gtk.main_level > 0
- destroy
- Gtk.main_quit
- end
- nil
- end
-
- # Display the new title according to the editor's current state.
- def display_title
- title = TITLE.dup
- title << ": #@filename" if @filename
- title << " *" if @changed
- self.title = title
- end
-
- # Clear the current model, after asking to save all unsaved changes.
- def clear
- ask_save if @changed
- @filename = nil
- self.view_new_model nil
- end
-
- def check_pretty_printed(json)
- pretty = !!((nl_index = json.index("\n")) && nl_index != json.size - 1)
- @options_menu.pretty_item.active = pretty
- end
- private :check_pretty_printed
-
- # Open the data at the location _uri_, if given. Otherwise open a dialog
- # to ask for the _uri_.
- def location_open(uri = nil)
- uri = ask_for_location unless uri
- uri or return
- ask_save if @changed
- data = load_location(uri) or return
- view_new_model Editor.data2model(data)
- end
-
- # Open the file _filename_ or call the #select_file method to ask for a
- # filename.
- def file_open(filename = nil)
- filename = select_file('Open as a JSON file') unless filename
- data = load_file(filename) or return
- view_new_model Editor.data2model(data)
- end
-
- # Edit the string _json_ in the editor.
- def edit(json)
- if json.respond_to? :read
- json = json.read
- end
- data = parse_json json
- view_new_model Editor.data2model(data)
- end
-
- # Save the current file.
- def file_save
- if @filename
- store_file(@filename)
- else
- file_save_as
- end
- end
-
- # Save the current file as the filename
- def file_save_as
- filename = select_file('Save as a JSON file')
- store_file(filename)
- end
-
- # Store the current JSON document to _path_.
- def store_file(path)
- if path
- data = Editor.model2data(@treeview.model.iter_first)
- File.open(path + '.tmp', 'wb') do |output|
- data or break
- if @options_menu.pretty_item.active?
- output.puts JSON.pretty_generate(data, :max_nesting => false)
- else
- output.write JSON.generate(data, :max_nesting => false)
- end
- end
- File.rename path + '.tmp', path
- @filename = path
- toplevel.display_status("Saved data to '#@filename'.")
- unchange
- end
- rescue SystemCallError => e
- Editor.error_dialog(self, "Failed to store JSON file: #{e}!")
- end
-
- # Load the file named _filename_ into the editor as a JSON document.
- def load_file(filename)
- if filename
- if File.directory?(filename)
- Editor.error_dialog(self, "Try to select a JSON file!")
- nil
- else
- @filename = filename
- if data = read_data(filename)
- toplevel.display_status("Loaded data from '#@filename'.")
- end
- display_title
- data
- end
- end
- end
-
- # Load the data at location _uri_ into the editor as a JSON document.
- def load_location(uri)
- data = read_data(uri) or return
- @filename = nil
- toplevel.display_status("Loaded data from '#{uri}'.")
- display_title
- data
- end
-
- def parse_json(json)
- check_pretty_printed(json)
- if @encoding && !/^utf8$/i.match(@encoding)
- iconverter = Iconv.new('utf8', @encoding)
- json = iconverter.iconv(json)
- end
- JSON::parse(json, :max_nesting => false, :create_additions => false)
- end
- private :parse_json
-
- # Read a JSON document from the file named _filename_, parse it into a
- # ruby data structure, and return the data.
- def read_data(filename)
- open(filename) do |f|
- json = f.read
- return parse_json(json)
- end
- rescue => e
- Editor.error_dialog(self, "Failed to parse JSON file: #{e}!")
- return
- end
-
- # Open a file selecton dialog, displaying _message_, and return the
- # selected filename or nil, if no file was selected.
- def select_file(message)
- filename = nil
- fs = FileSelection.new(message)
- fs.set_modal(true)
- @default_dir = File.join(Dir.pwd, '') unless @default_dir
- fs.set_filename(@default_dir)
- fs.set_transient_for(self)
- fs.signal_connect(:destroy) { Gtk.main_quit }
- fs.ok_button.signal_connect(:clicked) do
- filename = fs.filename
- @default_dir = File.join(File.dirname(filename), '')
- fs.destroy
- Gtk.main_quit
- end
- fs.cancel_button.signal_connect(:clicked) do
- fs.destroy
- Gtk.main_quit
- end
- fs.show_all
- Gtk.main
- filename
- end
-
- # Ask for location URI a to load data from. Returns the URI as a string.
- def ask_for_location
- dialog = Dialog.new(
- "Load data from location...",
- nil, nil,
- [ Stock::OK, Dialog::RESPONSE_ACCEPT ],
- [ Stock::CANCEL, Dialog::RESPONSE_REJECT ]
- )
- hbox = HBox.new(false, 5)
-
- hbox.pack_start(Label.new("Location:"), false)
- hbox.pack_start(location_input = Entry.new)
- location_input.width_chars = 60
- location_input.text = @location || ''
-
- dialog.vbox.pack_start(hbox, false)
-
- dialog.signal_connect(:'key-press-event', &DEFAULT_DIALOG_KEY_PRESS_HANDLER)
- dialog.show_all
- dialog.run do |response|
- if response == Dialog::RESPONSE_ACCEPT
- return @location = location_input.text
- end
- end
- return
- ensure
- dialog.destroy if dialog
- end
- end
-
- class << self
- # Starts a JSON Editor. If a block was given, it yields
- # to the JSON::Editor::MainWindow instance.
- def start(encoding = 'utf8') # :yield: window
- Gtk.init
- @window = Editor::MainWindow.new(encoding)
- @window.icon_list = [ Editor.fetch_icon('json') ]
- yield @window if block_given?
- @window.show_all
- Gtk.main
- end
-
- # Edit the string _json_ with encoding _encoding_ in the editor.
- def edit(json, encoding = 'utf8')
- start(encoding) do |window|
- window.edit json
- end
- end
-
- attr_reader :window
- end
- end
-end