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# redMine - project management software

# Copyright (C) 2006-2007  Jean-Philippe Lang

#

# This program is free software; you can redistribute it and/or

# modify it under the terms of the GNU General Public License

# as published by the Free Software Foundation; either version 2

# of the License, or (at your option) any later version.

# 

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

# 

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

module QueriesHelper

  def operators_for_select(filter_type)

    Query.operators_by_filter_type[filter_type].collect {|o| [l(Query.operators[o]), o]}

  end

  def column_header(column)

    column.sortable ? sort_header_tag(column.name.to_s, :caption => column.caption,

                                                        :default_order => column.default_order) : 

                      content_tag('th', column.caption)

  end

  def column_content(column, issue)

    value = column.value(issue)

    case value.class.name

    when 'String'

      if column.name == :subject

        link_to(h(value), :controller => 'issues', :action => 'show', :id => issue)

      else

        h(value)

      end

    when 'Time'

      format_time(value)

    when 'Date'

      format_date(value)

    when 'Fixnum', 'Float'

      if column.name == :done_ratio

        progress_bar(value, :width => '80px')

      else

        value.to_s

      end

    when 'User'

      link_to_user value

    when 'Project'

      link_to_project value

    when 'Version'

      link_to(h(value), :controller => 'versions', :action => 'show', :id => value)

    when 'TrueClass'

      l(:general_text_Yes)

    when 'FalseClass'

      l(:general_text_No)

    when 'Issue'

      link_to_issue(value, :subject => false)

    else

      h(value)

    end

  end

  # Retrieve query from session or build a new query

  def retrieve_query

    if !params[:query_id].blank?

      cond = "project_id IS NULL"

      cond << " OR project_id = #{@project.id}" if @project

      @query = Query.find(params[:query_id], :conditions => cond)

      @query.project = @project

      session[:query] = {:id => @query.id, :project_id => @query.project_id}

      sort_clear

    else

      if api_request? || params[:set_filter] || session[:query].nil? || session[:query][:project_id] != (@project ? @project.id : nil)

        # Give it a name, required to be valid

        @query = Query.new(:name => "_")

        @query.project = @project

        if params[:fields]

          @query.filters = {}

          @query.add_filters(params[:fields], params[:operators], params[:values])

        else

          @query.available_filters.keys.each do |field|

            @query.add_short_filter(field, params[field]) if params[field]

          end

        end

        @query.group_by = params[:group_by]

        @query.column_names = params[:query] && params[:query][:column_names]

        session[:query] = {:project_id => @query.project_id, :filters => @query.filters, :group_by => @query.group_by, :column_names => @query.column_names}

      else

        @query = Query.find_by_id(session[:query][:id]) if session[:query][:id]

        @query ||= Query.new(:name => "_", :project => @project, :filters => session[:query][:filters], :group_by => session[:query][:group_by], :column_names => session[:query][:column_names])

        @query.project = @project

      end

    end

  end

end