Module: Zena::Use::Ajax::ViewMethods

Includes:
RubyLess
Defined in:
lib/zena/use/ajax.rb

Instance Method Summary collapse

Instance Method Details

#add_drag_id(dom_id, js_options = nil) ⇒ Object

Used by zafu to set dom_id that need to be made draggable.



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# File 'lib/zena/use/ajax.rb', line 145

def add_drag_id(dom_id, js_options = nil)
  @drag_ids ||= {}
  (@drag_ids[js_options] ||= []) << dom_id
end

#add_drop_id(dom_id, options) ⇒ Object

Used by zafu to transform a dom_id into a droppable element.



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# File 'lib/zena/use/ajax.rb', line 151

def add_drop_id(dom_id, options)
  js_data << "Droppables.add('#{dom_id}', {hoverclass:'#{options[:hover] || 'drop_hover'}', onDrop:function(element){
  new Ajax.Request('#{options[:url]}', {asynchronous:true, evalScripts:true, method:'put', parameters:'drop=' + encodeURIComponent(element.id)});
}});"
end

#add_toggle_id(dom_id, group_name, role) ⇒ Object 



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# File 'lib/zena/use/ajax.rb', line 157

def add_toggle_id(dom_id, group_name, role)
  @toggle_ids ||= {}
  unless list = @toggle_ids[group_name]
    list = @toggle_ids[group_name] = []

    if other = yield
      found = other.rel[role].other_zips
    else
      found = []
    end
    url = "/nodes/#{other.zip}"
    js_data << "#{group_name} = {\"list\":#{found.inspect}, \"url\":#{url.inspect}, \"role\":#{role.inspect}};"
  end
  list << dom_id
end

#filter_form(node, dom_id) ⇒ Object 



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# File 'lib/zena/use/ajax.rb', line 173

def filter_form(node, dom_id)
  js_data << %Q{new Form.Observer('#{dom_id}', 0.3, function(element, value) {new Ajax.Request('#{zafu_node_path(node)}', {asynchronous:true, evalScripts:true, method:'get', parameters:Form.serialize('#{dom_id}')})});}
end

#ndom_id(node = @node, append_form = true) ⇒ Object

Return the DOM id for a node. We had to name this method ‘ndom_id’ because we want to avoid the clash with Rails’ dom_id method.



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# File 'lib/zena/use/ajax.rb', line 10

def ndom_id(node = @node, append_form = true)
  if node.kind_of?(Node) && !node.new_record?
    if params[:action] == 'create' && !params[:udom_id]
      return "#{params[:dom_id]}_#{node.zip}"
    end
  elsif append_form && node.kind_of?(Node) && params[:zadd]
    return "#{params[:dom_id]}_form"
  end

  @dom_id || params[:udom_id] || params[:dom_id]
end

#render_js(in_html = true) ⇒ Object

Include draggable ids in bottom of page Javascript.



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# File 'lib/zena/use/ajax.rb', line 178

def render_js(in_html = true)
  if @drag_ids
    @drag_ids.each do |js_options, list|
      if js_options.nil?
        js_data << %Q{#{list.inspect}.each(Zena.draggable);}
      else
        js_data << %Q{#{list.inspect}.each(function(item) { Zena.draggable(item, #{js_options})});}
      end
    end
  end

  if @toggle_ids
    @toggle_ids.each do |group_name, list|
      js_data << %Q{#{list.inspect}.each(function(item) { Zena.set_toggle(item, #{group_name})});}
    end
  end

  # Super is in Zena::Use::Rendering
  super
end

#update_page_content(page, obj) ⇒ Object

RJS to update a page after create/update/destroy



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# File 'lib/zena/use/ajax.rb', line 23

def update_page_content(page, obj)
  unless params[:dom_id]
    # simply reply with failure or success
    if !obj.errors.empty?
      page << "alert(#{obj.errors.first.join(': ')});"
      page << "return false;" # How to avoid 'onSuccess' ?
    elsif params[:udom_id] == '_page'
      # reload page
      page << "document.location.href = document.location.href;"
    else
      # ?
    end
    return
  end

  if params[:t_id] && obj.errors.empty?
    obj = secure(Node) { Node.find_by_zip(params[:t_id])}
    @node = obj
  end

  base_class = obj.kind_of?(Node) ? Node : obj.class

  if obj.new_record?
    # A. could not create object: show form with errors
    page.replace ndom_id, :file => template_path_from_template_url + "_form.erb"
  elsif @errors || !obj.errors.empty?
    # B. could not update/delete: show errors
    form_file = template_path_from_template_url + "_form.erb"
    if File.exist?(form_file)
      page.replace ndom_id, :file => form_file
    else
      page.insert_html :top, params[:dom_id], :inline => render_errors
    end
  elsif params[:udom_id]
    if params[:udom_id] == '_page'
      # reload page
      page << "document.location.href = document.location.href;"
    else
      # C. update another part of the page
      if node_id = params[:u_id]
        if node_id.to_i != obj.zip
          if base_class == Node
            instance_variable_set("@#{base_class.to_s.underscore}", secure(base_class) { base_class.find_by_zip(node_id) })
          else
            instance_variable_set("@#{base_class.to_s.underscore}", secure(base_class) { base_class.find_by_id(node_id) })
          end
        end
      end
      page.replace params[:udom_id], :file => template_path_from_template_url(params[:u_url]) + ".erb"
      if params[:upd_both]
        @dom_id = params[:dom_id]
        page.replace params[:dom_id], :file => template_path_from_template_url + ".erb"
      end
      if params[:done] && params[:zadd]
        page.toggle "#{params[:dom_id]}_form", "#{params[:dom_id]}_add"
        page << params[:done]
      elsif params[:done]
        page << params[:done]
      end
    end
  else
    # D. normal update
    #if params[:dom_id] == '_page'
    #  # reload page
    #  page << "document.location.href = document.location.href;"
    #

    case params[:action]
    when 'edit'
      page.replace params[:dom_id], :file => template_path_from_template_url + ".erb"
      page << "$('#{params[:dom_id]}_form_t').focusFirstElement();"
    when 'create'
      pos = params[:position]  || :before
      ref = params[:reference] || "#{params[:dom_id]}_add"
      page.insert_html pos.to_sym, ref, :file => template_path_from_template_url + ".erb"
      if obj.kind_of?(Node)
        @node = obj.parent.new_child(:class => obj.class)
      else
        instance_variable_set("@#{base_class.to_s.underscore}", obj.clone)
      end
      page.replace ndom_id, :file => template_path_from_template_url + "_form.erb"
      if params[:done]
        page << params[:done]
      elsif params[:zadd]
        page.toggle "#{params[:dom_id]}_form", "#{params[:dom_id]}_add"
      end
    when 'update'
      page.replace ndom_id, :file => template_path_from_template_url + ".erb"
      page << params[:done] if params[:done]
    when 'destroy'
      page << %Q{
        new Effect.Highlight('#{ndom_id}', {
          duration: 0.3,
          afterFinish: function() {
            new Effect.Fade('#{ndom_id}', {
              duration: 0.5,
              afterFinish: function() {
              $('#{ndom_id}').remove();
              }
            });
          }
        });
      }
    when 'drop'
      case params[:done]
      when 'remove'
        page.visual_effect :highlight, params[:drop], :duration => 0.3
        page.visual_effect :fade, params[:drop], :duration => 0.3
      end
      page.replace params[:dom_id], :file => template_path_from_template_url + ".erb"
    else
      if position = params[:insert]
        page.call 'Zena.insert_inner', params[:dom_id], position, render(:file => template_path_from_template_url + ".erb")
      else
        page.replace params[:dom_id], :file => template_path_from_template_url + ".erb"
      end
    end
  end
  page << render_js(false)
end