start adding widgets

lib/widget.rb

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+class Widget
+end

lib/widget/base.rb

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+class Widget::Base
+  attr_reader :engine
+
+  def self.render(subject)
+    new(subject).render
+  end
+
+  def initialize(query)
+    @query = query
+    @engine = query.engine
+  end
+
+  def render
+    raise NotImplementedError,  "#render is not implemented in the subclasses"
+  end
+end

lib/widget/filters.rb

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+class Widget::Filters < Widget::Base
+  def render
+    @query.engine::Filter.all.collect do |f|
+      render_filter f
+    end.join
+  end
+
+  def render_filter(f)
+    Filters::Label.render(f)
+    Filters::Operators.render(f)
+
+    return filter.custom_elements if filter.custom_elements?
+    return object_elements_with_dependents filter if filter.has_dependents?
+    return text_elements filter if engine::Operator.string_operators.all? { |o| filter.available_operators.include? o }
+    return date_elements filter if engine::Operator.time_operators.all?   { |o| filter.available_operators.include? o }
+    return object_elements filter
+  end
+
+  def object_elements_with_dependents(filter)
+    object_elements(filter).tap do |elements|
+      elements.last[:dependents] = filter.injected_dependents.collect(&:underscore_name)
+      elements.last[:name] = :multi_values_with_dependent
+    end
+  end
+
+  def object_elements(f)
+    Filters::MultiValues.render(f)
+  end
+
+  def date_elements(filter)
+    [
+      {:name => :date, :filter_name => filter.underscore_name}]
+  end
+
+  def text_elements(filter)
+    [
+      {:name => :text_box, :filter_name => filter.underscore_name}]
+  end
+end

lib/widget/filters/base.rb

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+class Widget::Filters::Base < Widget::Base
+  attr_reader :filter
+
+  def initialize(filter)
+    @filter = filter
+    @engine = engine
+  end
+end

lib/widget/filters/date.rb

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+class Widget::Filters::Date < Widget::Filters::Base
+  def render
+    name = "values[#{filter.underscore_name}][]"
+    id_prefix = "#{filter.underscore_name}_"
+
+    content_tag :td do
+      content_tag :div, :id => "#{id_prefix}arg_1", :class => "filter_values" do
+        text_field_tag name, "", :size => 10, :class => "select-small", :id => "#{id_prefix}arg_1_val"
+        calendar_for("#{id_prefix}arg_1_val")
+        content_tag :span, :id => "#{id_prefix}arg_2", :class => "between_tags" do
+          text_field_tag "#{name}", "", :size => 10, :class => "select-small", :id => "#{id_prefix}arg_2_val"
+          calendar_for "#{id_prefix}arg_2_val"
+        end
+      end
+    end
+  end
+end

lib/widget/filters/label.rb

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+class Widget::Filters::Label < Widget::Filters::Base
+  def render
+    content_tag :td, :width => (filter.width || 150) do
+      content_tag :label, :id => filter.underscore_name do
+        l(filter.label)
+      end
+    end
+  end
+end

lib/widget/filters/multi_values.rb

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+class Widget::Filters::MultiValues < Widget::Filters::Base
+
+  def render
+    content_tag :td do
+      content_tag :div, :id => filter.underscore_name, :class => "filter_values" do
+        content_tag :select, :style => "vertical-align: top;", # FIXME: Do CSS
+                             :name => "values[#{filter.underscore_name}][]",
+                             :id => "#{filter.underscore_name}_arg_1_val",
+                             :class => "select-small filters-select",
+                             :multiple => "multiple" do
+                             # multiple will be disabled/enabled later by JavaScript anyhow.
+                             # We need to specify multiple here because of an IE6-bug.
+          filter.values.each do |name, id, *args|
+            options = args.first || {} # optional configuration for values
+            level = options[:level] # nesting_level is optional for values
+            name = l(name) if name.is_a? Symbol
+            name_prefix = ((level && level > 0) ? (' ' * 2 * level + '> ') : '')
+            unless options[:optgroup]
+              content_tag :option, :value => id do
+                name_prefix + h(name)
+              end
+            else
+              tag :optgroup, :label => l(:label_sector)
+            end
+          end
+        end
+        link_to_function image_tag('bullet_toggle_plus.png'),
+            "toggle_multi_select($('#{element[:filter_name]}_arg_1_val'));",
+            :style => "vertical-align: bottom;"
+      end
+    end
+  end
+end

lib/widget/filters/operators.rb

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+class Widget::Filters::Operators < Widget::Filters::Base
+  def render
+    content_tag :td, :width => (filter.width || 100) do
+      content_tag :select, :class => "select-small filters-select",
+                           :style => "vertical-align: top", # FIXME: put into CSS
+                           :id => "operators[#{filter.underscore_name}]",
+                           :onchange => "operator_changed('#{filter.underscore_name}', this);",
+                           :name => "operators[#{filter.underscore_name}]" do
+        filter.available_operators.each do |o|
+          if filter.operator.to_s = o.to_s
+            content_tag :option, :value => h(o.to_s), :data-arity => o.arity, :selected => "selected"  do
+              h(l(o.label))
+            end
+          else
+            content_tag :option, :value => h(o.to_s), :data-arity => o.arity do
+              h(l(o.label))
+            end
+          end
+        end
+      end
+    end
+  end
+end

lib/widget/group_bys.rb

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+class Widget::GroupBys < Widget::Base
+end

lib/widget/settings.rb

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+class Widget::Settings < Widget::Base
+end

lib/widget/table.rb

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+class Widget::Table < Widget::Base
+end