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Contents
module Redcar
# Models a copy/paste clipboard that can contain multiple elements.
#
# Each entry in the Clipboard is an array of Strings, like these:
#
# ["mytext"]
# ["foo", "bar"]
#
# Each entry is an array of Strings in order to support copy/paste in
# block selection mode.
class Clipboard
include Redcar::Model
include Redcar::Observable
include Enumerable
def self.max_length
10
end
attr_reader :name
def initialize(name)
@name = name
@contents = []
end
# Add an entry to the clipboard.
#
# Events: [:added, Array<String>]
#
# @param [String, Array<String>]
def <<(text)
if text.is_a?(String)
text = [text]
end
return if text == [""]
@contents << text
if @contents.length == Clipboard.max_length + 1
@contents.delete_at(0)
end
notify_listeners(:added_internal, text)
notify_listeners(:added, text)
end
# The most recent entry added to the Clipboard
#
# @return [Array<String>]
def last
check_for_changes
@contents.last
end
# The number of entries on the Clipboard
def length
check_for_changes
@contents.length
end
# Fetch an entry. 0 is the most recent
#
# @return [Array<String>]
def [](index)
check_for_changes
@contents[-1*index-1]
end
# Iterate over each entry.
def each(&block)
check_for_changes
@contents.each(&block)
end
# Add an entry without raising an event.
#
# @param [String, Array<String>]
def silently_add(text)
@contents << text
end
private
def check_for_changes
if controller and controller.changed?
if @contents.length > 0
controller.last_set = @contents.last.join("\n")
end
contents = controller.get_contents
self << contents if contents
end
end
end
end
Version data entries
75 entries across 75 versions & 2 rubygems