wice_grid.coffee

wice_grid.coffee

WiceGridProcessor = (name, base_request_for_filter, base_link_for_show_all_records, link_for_export, parameter_name_for_query_loading, parameter_name_for_focus, environment) ->

   this.checkIfJsFrameworkIsLoaded = () ->
     if ! jQuery
       alert "jQuery not loaded, WiceGrid cannot proceed!"

   this.checkIfJsFrameworkIsLoaded()

   this.name = name
   this.parameter_name_for_query_loading = parameter_name_for_query_loading
   this.parameter_name_for_focus = parameter_name_for_focus
   this.base_request_for_filter = base_request_for_filter
   this.base_link_for_show_all_records = base_link_for_show_all_records
   this.link_for_export = link_for_export
   this.filter_declarations = new Array()
   this.environment = environment

   this.toString = () ->
     "<WiceGridProcessor instance for grid '" + this.name + "'>"


   this.process = (dom_id_to_focus) ->
     window.location = this.build_url_with_params dom_id_to_focus

   this.reload_page_for_given_grid_state = (grid_state) ->
     request_path = this.grid_state_to_request grid_state
     window.location = this.append_to_url this.base_link_for_show_all_records, request_path

   this.load_query = (query_id) ->
     request = this.append_to_url this.build_url_with_params(), this.parameter_name_for_query_loading + encodeURIComponent(query_id)
     window.location = request

   this.save_query = (field_id, query_name, base_path_to_query_controller, grid_state, input_ids) ->
     if input_ids instanceof Array
       input_ids.each(dom_id) ->
         grid_state.push ['extra[' + dom_id + ']', $('#'+ dom_id)[0].value]


     request_path = this.grid_state_to_request grid_state

     jQuery.ajax
       url: base_path_to_query_controller,
       async: true,
       data: request_path + '&query_name=' + encodeURIComponent(query_name),
       dataType: 'script',
       type: 'POST',
       success: () -> $('#' + field_id).val('')

   this.grid_state_to_request = (grid_state) ->
     jQuery.map grid_state, (pair) ->
       encodeURIComponent(pair[0]) + '=' + encodeURIComponent(pair[1])
     .join '&'

   this.append_to_url = (url, str) ->
     if url.indexOf('?') != -1
       if /[&\?]$/.exec url
         sep = ''
       else
         sep = '&'
     else
       sep = '?'
     url + sep + str


   this.build_url_with_params = (dom_id_to_focus) ->
     results = new Array()
     _this =  this
     jQuery.each this.filter_declarations, (i, filter_declaration) ->
       param = _this.read_values_and_form_query_string filter_declaration.filter_name, filter_declaration.detached, filter_declaration.templates, filter_declaration.ids
       if param && param != ''
         results.push param


     res = this.base_request_for_filter
     if results.length != 0
       all_filter_params = results.join '&'
       res = this.append_to_url res, all_filter_params

     if dom_id_to_focus
       res = this.append_to_url res, this.parameter_name_for_focus + dom_id_to_focus

     res


   this.reset = () ->
      window.location = this.base_request_for_filter


   this.export_to_csv = () ->
       window.location = this.link_for_export

   this.register = (func) ->
       this.filter_declarations.push func

   this.read_values_and_form_query_string = (filter_name, detached, templates, ids) ->
     res = new Array()
     for i in [0 .. templates.length-1]
       if $(ids[i]) == null
         if this.environment == "development"
           message = 'WiceGrid: Error reading state of filter "' + filter_name + '". No DOM element with id "' + ids[i] + '" found.'
           if detached
             message += 'You have declared "' + filter_name + '" as a detached filter but have not output it anywhere in the template. Read documentation about detached filters.'
           alert message
         return ''

       el = $('#' + ids[i])

       if el[0] && el[0].type == 'checkbox'
         if el[0].checked
           val = 1
       else
         val = el.val()

       if val instanceof Array
         for j in [0 .. val.length-1]
           if val[j] && val[j] != ""
             res.push templates[i] + encodeURIComponent(val[j])

       else if val &&  val != ''
         res.push templates[i]  + encodeURIComponent(val)

     res.join '&'

   this

toggle_multi_select = (select_id, link_obj, expand_label, collapse_label) ->
  select = $('#' + select_id)[0]
  if select.multiple == true
    select.multiple = false
    link_obj.title = expand_label
  else
    select.multiple = true
    link_obj.title = collapse_label

WiceGridProcessor._version = '0.4.3'