module Glimmer::UI::CustomWidget
Attributes
body_root[R]
<- end of class methods
options[R]
<- end of class methods
parent[R]
<- end of class methods
parent_proxy[R]
<- end of class methods
swt_style[R]
<- end of class methods
Public Class Methods
add_custom_widget_namespaces_for(klass)
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# File lib/glimmer/ui/custom_widget.rb, line 135 def add_custom_widget_namespaces_for(klass) Glimmer::UI::CustomWidget.namespaces_for_class(klass).drop(1).each do |namespace| Glimmer::UI::CustomWidget.custom_widget_namespaces << namespace end end
custom_widget_namespaces()
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# File lib/glimmer/ui/custom_widget.rb, line 149 def custom_widget_namespaces @custom_widget_namespaces ||= reset_custom_widget_namespaces end
for(underscored_custom_widget_name)
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# File lib/glimmer/ui/custom_widget.rb, line 107 def for(underscored_custom_widget_name) extracted_namespaces = underscored_custom_widget_name. to_s. split(/__/).map do |namespace| namespace.camelcase(:upper) end custom_widget_namespaces.each do |base| extracted_namespaces.reduce(base) do |result, namespace| if !result.constants.include?(namespace) namespace = result.constants.detect {|c| c.to_s.upcase == namespace.to_s.upcase } || namespace end begin constant = result.const_get(namespace) return constant if constant&.respond_to?(:ancestors) && constant&.ancestors&.to_a.include?(Glimmer::UI::CustomWidget) constant rescue => e # Glimmer::Config.logger.debug {"#{e.message}\n#{e.backtrace.join("\n")}"} result end end end raise "#{underscored_custom_widget_name} has no custom widget class!" rescue => e Glimmer::Config.logger.debug {e.message} Glimmer::Config.logger.debug {"#{e.message}\n#{e.backtrace.join("\n")}"} nil end
included(klass)
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# File lib/glimmer/ui/custom_widget.rb, line 99 def included(klass) klass.extend(ClassMethods) unless klass.name.include?('Glimmer::UI::CustomShell') klass.include(Glimmer) Glimmer::UI::CustomWidget.add_custom_widget_namespaces_for(klass) end end
namespaces_for_class(m)
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# File lib/glimmer/ui/custom_widget.rb, line 141 def namespaces_for_class(m) return [m] if m.name.nil? namespace_constants = m.name.split(/::/).map(&:to_sym) namespace_constants.reduce([Object]) do |output, namespace_constant| output += [output.last.const_get(namespace_constant)] end[1..-1].uniq.reverse end
new(parent, args, options, &content)
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# File lib/glimmer/ui/custom_widget.rb, line 163 def initialize(parent, args, options, &content) @parent = parent options = args.delete_at(-1) if args.is_a?(Array) && args.last.is_a?(Hash) if args.is_a?(Hash) options = args args = [] end options ||= {} args = options.delete('swt_style').split(',').map(&:to_sym) if options['swt_style'] @args = args @swt_style = SWT::SWTProxy[*@args] options ||= {} @options = self.class.options.merge(options) @content = Util::ProcTracker.new(content) if content execute_hooks('before_body') body_block = self.class.instance_variable_get("@body_block") raise Glimmer::Error, 'Invalid custom widget for having no body! Please define body block!' if body_block.nil? @body_root = instance_exec(&body_block) @parent ||= @body_root.parent raise Glimmer::Error, 'Invalid custom widget for having an empty body! Please fill body block!' if @body_root.nil? execute_hooks('after_body') end
reset_custom_widget_namespaces()
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# File lib/glimmer/ui/custom_widget.rb, line 153 def reset_custom_widget_namespaces @custom_widget_namespaces = Set[Object, Glimmer::UI] end
Public Instance Methods
add_observer(observer, attribute_name)
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Calls superclass method
# File lib/glimmer/ui/custom_widget.rb, line 215 def add_observer(observer, attribute_name) if has_instance_method?(attribute_name) super else @body_root.add_observer(observer, attribute_name) end end
async_exec(&block)
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# File lib/glimmer/ui/custom_widget.rb, line 260 def async_exec(&block) SWT::DisplayProxy.instance.async_exec(&block) end
attribute_setter(attribute_name)
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# File lib/glimmer/ui/custom_widget.rb, line 252 def attribute_setter(attribute_name) "#{attribute_name}=" end
can_add_observer?(attribute_name)
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# File lib/glimmer/ui/custom_widget.rb, line 211 def can_add_observer?(attribute_name) has_instance_method?(attribute_name) || has_instance_method?("#{attribute_name}?") || @body_root.can_add_observer?(attribute_name) end
can_handle_observation_request?(observation_request)
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# File lib/glimmer/ui/custom_widget.rb, line 191 def can_handle_observation_request?(observation_request) observation_request = observation_request.to_s result = false if observation_request.start_with?('on_updated_') property = observation_request.sub(/^on_updated_/, '') result = can_add_observer?(property) end result || body_root&.can_handle_observation_request?(observation_request) end
content(&block)
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Returns content block if used as an attribute reader (no args) Otherwise, if a block is passed, it adds it as content to this custom widget
# File lib/glimmer/ui/custom_widget.rb, line 271 def content(&block) if block_given? Glimmer::DSL::Engine.add_content(self, Glimmer::DSL::Opal::CustomWidgetExpression.new, self.class.keyword, &block) else @content end end
get_attribute(attribute_name)
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# File lib/glimmer/ui/custom_widget.rb, line 244 def get_attribute(attribute_name) if has_instance_method?(attribute_name) send(attribute_name) else @body_root.get_attribute(attribute_name) end end
handle_observation_request(observation_request, block)
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# File lib/glimmer/ui/custom_widget.rb, line 201 def handle_observation_request(observation_request, block) observation_request = observation_request.to_s if observation_request.start_with?('on_updated_') property = observation_request.sub(/^on_updated_/, '') # TODO look into eliminating duplication from above add_observer(DataBinding::Observer.proc(&block), property) if can_add_observer?(property) else body_root.handle_observation_request(observation_request, block) end end
has_attribute?(attribute_name, *args)
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# File lib/glimmer/ui/custom_widget.rb, line 223 def has_attribute?(attribute_name, *args) has_instance_method?(attribute_setter(attribute_name)) || @body_root.has_attribute?(attribute_name, *args) end
has_instance_method?(method_name)
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This method ensures it has an instance method not coming from Glimmer
DSL
# File lib/glimmer/ui/custom_widget.rb, line 237 def has_instance_method?(method_name) respond_to?(method_name) and !body_root&.respond_to?(method_name) and !method(method_name)&.source_location&.first&.include?('glimmer/dsl/engine.rb') and !method(method_name)&.source_location&.first&.include?('glimmer/swt/widget_proxy.rb') end
has_style?(symbol)
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# File lib/glimmer/ui/custom_widget.rb, line 256 def has_style?(symbol) @args.include?(symbol) # not a very solid implementation. Bring SWT constants eventually end
method_missing(method, *args, &block)
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# File lib/glimmer/ui/custom_widget.rb, line 279 def method_missing(method, *args, &block) if can_handle_observation_request?(method) handle_observation_request(method, block) else body_root.send(method, *args, &block) end end
post_initialize_child(child)
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Subclasses may override to perform post initialization work on an added child
# File lib/glimmer/ui/custom_widget.rb, line 187 def post_initialize_child(child) # No Op by default end
respond_to?(method, *args, &block)
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Calls superclass method
# File lib/glimmer/ui/custom_widget.rb, line 288 def respond_to?(method, *args, &block) super or can_handle_observation_request?(method) or body_root.respond_to?(method, *args, &block) end
Also aliased as: local_respond_to?
set_attribute(attribute_name, *args)
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# File lib/glimmer/ui/custom_widget.rb, line 228 def set_attribute(attribute_name, *args) if has_instance_method?(attribute_setter(attribute_name)) send(attribute_setter(attribute_name), *args) else @body_root.set_attribute(attribute_name, *args) end end
sync_exec(&block)
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sync_exec
kept for API compatibility reasons
# File lib/glimmer/ui/custom_widget.rb, line 265 def sync_exec(&block) SWT::DisplayProxy.instance.async_exec(&block) end
Private Instance Methods
execute_hooks(hook_name)
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# File lib/glimmer/ui/custom_widget.rb, line 296 def execute_hooks(hook_name) self.class.instance_variable_get("@#{hook_name}_blocks")&.each do |hook_block| instance_exec(&hook_block) end end