Class: Fortitude::RenderingContext
- Inherits:
-
Object
- Object
- Fortitude::RenderingContext
show all
- Defined in:
- lib/fortitude/rendering_context.rb
Defined Under Namespace
Classes: OutputBufferHolder
Constant Summary
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- NEWLINE =
"\n"
Instance Attribute Summary collapse
Instance Method Summary
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Constructor Details
Returns a new instance of RenderingContext.
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# File 'lib/fortitude/rendering_context.rb', line 8
def initialize(options)
options.assert_valid_keys(:delegate_object, :output_buffer_holder, :helpers_object, :instance_variables_object,
:yield_block, :render_yield_result)
@output_buffer_holder = options[:output_buffer_holder]
if (! @output_buffer_holder) && options[:delegate_object] && options[:delegate_object].respond_to?(:output_buffer)
@output_buffer_holder = options[:delegate_object]
end
@output_buffer_holder ||= OutputBufferHolder.new
@helpers_object = options[:helpers_object] || options[:delegate_object] || Object.new
instance_variables_object = options[:instance_variables_object] || options[:delegate_object] || Object.new
@instance_variable_set = Fortitude::Support::InstanceVariableSet.new(instance_variables_object)
@render_yield_result = true unless options.has_key?(:render_yield_result) && (! options[:render_yield_result])
@indent = 0
@newline_needed = false
@have_output = false
@indenting_disabled = false
@current_element_nesting = [ ]
@current_widget_nesting = [ ]
@ids_used = { }
@yield_block = options[:yield_block]
end
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Instance Attribute Details
#helpers_object ⇒ Object
Returns the value of attribute helpers_object.
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# File 'lib/fortitude/rendering_context.rb', line 6
def helpers_object
@helpers_object
end
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#instance_variable_set ⇒ Object
Returns the value of attribute instance_variable_set.
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# File 'lib/fortitude/rendering_context.rb', line 6
def instance_variable_set
@instance_variable_set
end
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#output_buffer_holder ⇒ Object
Returns the value of attribute output_buffer_holder.
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# File 'lib/fortitude/rendering_context.rb', line 6
def output_buffer_holder
@output_buffer_holder
end
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Instance Method Details
#about_to_output_non_whitespace! ⇒ Object
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# File 'lib/fortitude/rendering_context.rb', line 157
def about_to_output_non_whitespace!
if @newline_needed
if @have_output
o = @output_buffer_holder.output_buffer
o.original_concat(NEWLINE)
o.original_concat(current_indent) unless @indenting_disabled
end
@newline_needed = false
end
@have_output = true
end
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#attribute_validation_disabled? ⇒ Boolean
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# File 'lib/fortitude/rendering_context.rb', line 66
def attribute_validation_disabled?
!! @attribute_validation_disabled
end
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#current_element_nesting ⇒ Object
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# File 'lib/fortitude/rendering_context.rb', line 123
def current_element_nesting
@current_element_nesting
end
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#current_indent ⇒ Object
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# File 'lib/fortitude/rendering_context.rb', line 143
def current_indent
(" " * @indent).freeze
end
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# File 'lib/fortitude/rendering_context.rb', line 101
def current_widget_depth
@current_widget_nesting.length - 1
end
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#decrease_indent! ⇒ Object
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# File 'lib/fortitude/rendering_context.rb', line 135
def decrease_indent!
@indent -= 1
end
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#emitting_tag!(widget, tag_object, content_or_attributes, attributes) ⇒ Object
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# File 'lib/fortitude/rendering_context.rb', line 109
def emitting_tag!(widget, tag_object, content_or_attributes, attributes)
validate_element_for_rules(widget, tag_object) if widget.class.enforce_element_nesting_rules
@current_element_nesting << tag_object
begin
yield
ensure
last = @current_element_nesting.pop
unless last.equal?(tag_object)
raise "Something horrible happened -- the last tag we started was #{last}, but now we're ending #{tag_object}?!?"
end
end
end
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# File 'lib/fortitude/rendering_context.rb', line 97
def end_widget!(widget)
end
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#flush! ⇒ Object
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# File 'lib/fortitude/rendering_context.rb', line 189
def flush!
end
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# File 'lib/fortitude/rendering_context.rb', line 127
def format_output?
true
end
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#increase_indent! ⇒ Object
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# File 'lib/fortitude/rendering_context.rb', line 131
def increase_indent!
@indent += 1
end
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#needs_newline! ⇒ Object
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# File 'lib/fortitude/rendering_context.rb', line 139
def needs_newline!
@newline_needed = true
end
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# File 'lib/fortitude/rendering_context.rb', line 105
def parent_widget
@current_widget_nesting[-2]
end
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#record_render(args, &block) ⇒ Object
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# File 'lib/fortitude/rendering_context.rb', line 74
def record_widget(widget)
start_widget!(widget)
@current_widget_nesting << widget
@current_element_nesting << widget
begin
yield
ensure
last = @current_widget_nesting.pop
unless last.equal?(widget)
raise "Something horrible happened -- the last widget we started was #{last}, but now we're ending #{widget}?!?"
end
last = @current_element_nesting.pop
unless last.equal?(widget)
raise "Something horrible happened -- the last element we started was #{last}, but now we're ending #{widget}?!?"
end
end_widget!(widget)
end
end
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# File 'lib/fortitude/rendering_context.rb', line 93
def start_widget!(widget)
end
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#validate_id_uniqueness(widget, tag_name, id) ⇒ Object
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# File 'lib/fortitude/rendering_context.rb', line 193
def validate_id_uniqueness(widget, tag_name, id)
id = id.to_s
if @ids_used[id] && (! @id_uniqueness_disabled)
(already_used_widget, already_used_tag_name) = @ids_used[id]
raise Fortitude::Errors::DuplicateId.new(widget, id, already_used_widget, already_used_tag_name, tag_name)
else
@ids_used[id] = [ widget, tag_name ]
end
end
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#with_attribute_validation(value) ⇒ Object
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# File 'lib/fortitude/rendering_context.rb', line 46
def with_attribute_validation(value)
old_value = @attribute_validation_disabled
@attribute_validation_disabled = !value
begin
yield
ensure
@attribute_validation_disabled = old_value
end
end
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#with_element_nesting_validation(value) ⇒ Object
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# File 'lib/fortitude/rendering_context.rb', line 36
def with_element_nesting_validation(value)
old_value = @element_nesting_validation_disabled
@element_nesting_validation_disabled = !value
begin
yield
ensure
@element_nesting_validation_disabled = old_value
end
end
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#with_id_uniqueness(value) ⇒ Object
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# File 'lib/fortitude/rendering_context.rb', line 56
def with_id_uniqueness(value)
old_value = @id_uniqueness_disabled
@id_uniqueness_disabled = !value
begin
yield
ensure
@id_uniqueness_disabled = old_value
end
end
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#with_indenting_disabled ⇒ Object
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# File 'lib/fortitude/rendering_context.rb', line 147
def with_indenting_disabled
old_indenting_disabled = @indenting_disabled
@indenting_disabled = true
begin
yield
ensure
@indenting_disabled = old_indenting_disabled
end
end
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#with_yield_block(new_yield_block) ⇒ Object
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# File 'lib/fortitude/rendering_context.rb', line 171
def with_yield_block(new_yield_block)
old_yield_block, @yield_block = @yield_block, new_yield_block
begin
yield
ensure
@yield_block = old_yield_block
end
end
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# File 'lib/fortitude/rendering_context.rb', line 182
def yield_from_widget(widget, *args)
raise Fortitude::Errors::NoBlockToYieldTo.new(widget) unless @yield_block
result = @yield_block.call(*args)
@output_buffer_holder.output_buffer << result if @render_yield_result
result
end
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