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Versions: 38
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Stored size: 1.93 KB
Contents
module Redcar
class Treebook
include Redcar::Observable
include Redcar::Model
attr_reader :trees, :focussed_tree
def initialize
@trees = []
@focussed_tree = nil
end
# Add a tree to this treebook
#
# @param [Redcar::Tree]
def add_tree(tree)
@trees << tree
@focussed_tree = tree
notify_listeners(:tree_added, tree)
tree.focus
Redcar.app.repeat_event(:tree_added) if Redcar.app
end
# Bring the tree to the front
#
# @param [Redcar::Tree]
def focus_tree(tree)
return if @focussed_tree == tree
@focussed_tree = tree
notify_listeners(:tree_focussed, tree)
tree.focus
end
# Remove a tree from this treebook
#
# @param [Redcar::Tree]
def remove_tree(tree)
if @trees.include?(tree)
@trees.delete(tree)
notify_listeners(:tree_removed, tree)
if tree == focussed_tree
focus_tree(trees.first) if trees.any?
end
Redcar.app.repeat_event(:tree_removed) if Redcar.app
end
end
def switch_down
if @trees.any?
if @focussed_tree
index = @trees.index @focussed_tree
else
index = -1
end
new_tree_index = index + 1
new_tree_index = 0 if new_tree_index < 0 or new_tree_index >= @trees.size
tree = @trees[new_tree_index]
focus_tree(tree) if tree
end
end
def switch_up
if @trees.any?
if @focussed_tree
index = @trees.index @focussed_tree
else
index = 1
end
new_tree_index = index - 1
new_tree_index = @trees.size - 1 if new_tree_index < 0 or new_tree_index >= @trees.size
tree = @trees[new_tree_index]
focus_tree(tree) if tree
end
end
private
# Tell the Treebook that this tree has been focussed in the GUI.
def set_focussed_tree(tree)
@focussed_tree = tree
end
end
end
Version data entries
38 entries across 38 versions & 2 rubygems