Class: Glimmer::DataBinding::TreeItemsBinding
- Inherits:
-
Object
- Object
- Glimmer::DataBinding::TreeItemsBinding
- Includes:
- Observable, Observer
- Defined in:
- lib/glimmer/data_binding/tree_items_binding.rb
Instance Method Summary collapse
- #call(new_value = nil) ⇒ Object
-
#initialize(parent, model_binding, tree_properties) ⇒ TreeItemsBinding
constructor
A new instance of TreeItemsBinding.
- #populate_tree(model_tree_root_node, parent, tree_properties) ⇒ Object
- #populate_tree_node(model_tree_node, parent, tree_properties) ⇒ Object
Methods included from Observer
#add_dependent, #dependents, #dependents_for, proc, #register, #registration_for, #registrations, #remove_dependent, #unregister, #unregister_all_observables, #unregister_dependents_with_observable
Methods included from Observable
#add_observer, #inspect, #remove_observer
Constructor Details
#initialize(parent, model_binding, tree_properties) ⇒ TreeItemsBinding
Returns a new instance of TreeItemsBinding.
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 |
# File 'lib/glimmer/data_binding/tree_items_binding.rb', line 16 def initialize(parent, model_binding, tree_properties) @tree = parent @model_binding = model_binding @tree_properties = [tree_properties].flatten.first.to_h if @tree.respond_to?(:tree_properties=) @tree.tree_properties = @tree_properties else # assume custom widget @tree.body_root.tree_properties = @tree_properties end call model = model_binding.base_model observe(model, model_binding.property_name_expression) @tree. do |dispose_event| unregister_all_observables end end |
Instance Method Details
#call(new_value = nil) ⇒ Object
33 34 35 36 |
# File 'lib/glimmer/data_binding/tree_items_binding.rb', line 33 def call(new_value=nil) @model_tree_root_node = @model_binding.evaluate_property populate_tree(@model_tree_root_node, @tree, @tree_properties) end |
#populate_tree(model_tree_root_node, parent, tree_properties) ⇒ Object
38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 |
# File 'lib/glimmer/data_binding/tree_items_binding.rb', line 38 def populate_tree(model_tree_root_node, parent, tree_properties) # TODO make it change things by delta instead of removing all selected_tree_item_model = parent..getSelection.map(&:getData).first old_tree_items = parent.all_tree_items old_tree_item_expansion_by_data = old_tree_items.reduce({}) {|hash, ti| hash.merge(ti.getData => ti.getExpanded)} old_tree_items.each do |tree_item| tree_item.getData('observer_registrations').each do |key, observer_registration| observer_registration.unregister end end parent..removeAll populate_tree_node(model_tree_root_node, parent., tree_properties) parent.all_tree_items.each { |ti| ti.setExpanded(!!old_tree_item_expansion_by_data[ti.getData]) } tree_item_to_select = parent.depth_first_search {|ti| ti.getData == selected_tree_item_model} parent..setSelection(tree_item_to_select) end |
#populate_tree_node(model_tree_node, parent, tree_properties) ⇒ Object
55 56 57 58 59 60 61 62 63 64 65 66 67 68 |
# File 'lib/glimmer/data_binding/tree_items_binding.rb', line 55 def populate_tree_node(model_tree_node, parent, tree_properties) return if model_tree_node.nil? # TODO anticipate default tree properties if none were passed (like literal values text and children) tree_item = TreeItem.new(parent, SWT::SWTProxy[:none]) observer_registrations = @tree_properties.reduce({}) do |hash, key_value_pair| hash.merge(key_value_pair.first => observe(model_tree_node, key_value_pair.last)) end tree_item.setData('observer_registrations', observer_registrations) tree_item.setData(model_tree_node) tree_item.setText((model_tree_node && model_tree_node.send(tree_properties[:text])).to_s) [model_tree_node && model_tree_node.send(tree_properties[:children])].flatten.to_a.compact.each do |child| populate_tree_node(child, tree_item, tree_properties) end end |