delete old things!

gm/rebaseline_server/static/new/js/app.js

-'use strict';
-
-/**
- * TODO (stephana@): This is still work in progress. 
- * It does not offer the same functionality as the current version, but 
- * will serve as the starting point for a new backend.
- * It works with the current backend, but does not support rebaselining.
- */
-
-/*
- * Wrap everything into an IIFE to not polute the global namespace.
- */
-(function () {
-
-  // Declare app level module which contains everything of the current app.
-  // ui.bootstrap refers to directives defined in the AngularJS Bootstrap 
-  // UI package (http://angular-ui.github.io/bootstrap/).
-  var app = angular.module('rbtApp', ['ngRoute', 'ui.bootstrap']);
-
-  // Configure the different within app views.
-  app.config(['$routeProvider', function($routeProvider) {
-    $routeProvider.when('/', {templateUrl: 'partials/index-view.html', 
-                              controller: 'IndexCtrl'});
-    $routeProvider.when('/view', {templateUrl: 'partials/rebaseline-view.html',
-                                  controller: 'RebaselineCrtrl'});
-    $routeProvider.otherwise({redirectTo: '/'});
-  }]);
-
-
-  // TODO (stephana): Some of these constants are 'gm' specific. In the 
-  // next iteration we need to remove those as we move the more generic 
-  // 'dm' testing tool. 
-  // 
-  // Shared constants used here and in the markup. These are exported when
-  // when used by a controller.
-  var c = {
-    // Define different view states as we load the data.
-    ST_LOADING: 1,
-    ST_STILL_LOADING: 2,
-    ST_READY: 3,
-
-    // These column types are used by the Column class.
-    COL_T_FILTER: 'filter',
-    COL_T_IMAGE: 'image',
-    COL_T_REGULAR: 'regular',
-
-    // Request parameters used to select between subsets of results.
-    RESULTS_ALL: 'all',
-    RESULTS_FAILURES: 'failures',
-
-    // Filter types are used by the Column class.
-    FILTER_FREE_FORM: 'free_form',
-    FILTER_CHECK_BOX: 'checkbox',
-
-    // Columns either provided by the backend response or added in code. 
-    // TODO (stephana): This should go away once we switch to 'dm'.
-    COL_BUGS: 'bugs',
-    COL_IGNORE_FAILURE: 'ignore-failure',
-    COL_REVIEWED_BY_HUMANS: 'reviewed-by-human',
-
-    // Defines the order in which image columns appear.
-    // TODO (stephana@): needs to be driven by backend data.
-    IMG_COL_ORDER: [
-       {
-        key: 'imageA', 
-        urlField: ['imageAUrl']
-      },
-      {
-        key: 'imageB', 
-        urlField: ['imageBUrl']
-      },
-      {
-        key: 'whiteDiffs',
-        urlField: ['differenceData', 'whiteDiffUrl'],
-        percentField: ['differenceData', 'percentDifferingPixels'],
-        valueField: ['differenceData', 'numDifferingPixels']
-      },
-      {
-        key: 'diffs',
-        urlField: ['differenceData', 'diffUrl'],
-        percentField: ['differenceData', 'perceptualDifference'],
-        valueField: ['differenceData', 'maxDiffPerChannel']
-      }
-    ],
-
-    // Choice of availabe image size selection.
-    IMAGE_SIZES: [
-      100,
-      200,
-      400
-    ],
-
-    // Choice of available number of records selection.
-    MAX_RECORDS: [
-      '100', 
-      '200',
-      '300'
-    ]
-  };  // end constants 
-
-  /*
-   * Index Controller 
-   */
-  // TODO (stephana): Remove $timeout since it only simulates loading delay.
-  app.controller('IndexCtrl', ['$scope', '$timeout', 'dataService', 
-  function($scope, $timeout, dataService) {
-    // init the scope 
-    $scope.c = c;
-    $scope.state = c.ST_LOADING;
-    $scope.qStr = dataService.getQueryString;
-
-    // TODO (stephana): Remove and replace with index data generated by the 
-    // backend to reflect the current "known" image sets to compare.
-    $scope.allSKPs = [
-    {
-      params: {
-        setBSection: 'actual-results',
-        setASection: 'expected-results',
-        setBDir: 'gs://chromium-skia-skp-summaries/' + 
-                 'Test-Mac10.8-MacMini4.1-GeForce320M-x86_64-Debug',
-        setADir: 'repo:expectations/skp/' +
-                 'Test-Mac10.8-MacMini4.1-GeForce320M-x86_64-Debug'
-      },
-      title: 'expected vs actuals on ' +
-             'Test-Mac10.8-MacMini4.1-GeForce320M-x86_64-Debug'
-    }, 
-    {
-      params: {
-        setBSection: 'actual-results',
-        setASection: 'expected-results',
-        setBDir: 'gs://chromium-skia-skp-summaries/' +
-                 'Test-Ubuntu12-ShuttleA-GTX660-x86-Release',
-        setADir: 'repo:expectations/skp/'+
-                 'Test-Ubuntu12-ShuttleA-GTX660-x86-Release'
-      },
-      title: 'expected vs actuals on Test-Ubuntu12-ShuttleA-GTX660-x86-Release'
-    },
-    {
-      params: {
-        setBSection: 'actual-results',
-        setASection: 'actual-results',
-        setBDir: 'gs://chromium-skia-skp-summaries/' + 
-                 'Test-Ubuntu12-ShuttleA-GTX660-x86-Release',
-        setADir: 'gs://chromium-skia-skp-summaries/' + 
-                 'Test-Mac10.8-MacMini4.1-GeForce320M-x86_64-Debug'
-      },
-      title: 'Actuals on Test-Mac10.8-MacMini4.1-GeForce320M-x86_64-Debug ' + 
-             'vs Test-Ubuntu12-ShuttleA-GTX660-x86-Release'
-    }
-    ];
-
-    // TODO (stephana): Remove this once we load index data from the server. 
-    $timeout(function () { 
-      $scope.state = c.ST_READY;
-    }); 
-  }]);
-
-  /* 
-   *  RebaselineCtrl
-   *  Controls the main comparison view.
-   *
-   *  @param {service} dataService Service that encapsulates functions to 
-   *                               retrieve data from the backend.
-   *  
-   */
-  app.controller('RebaselineCrtrl', ['$scope', '$timeout', 'dataService', 
-  function($scope, $timeout, dataService) {
-    // determine which to request
-    // TODO (stephana): This should be extracted from the query parameters.
-    var target = c.TARGET_GM;
-
-    // process the rquest arguments
-    // TODO (stephana): This should be determined from the query parameters.
-    var loadFn = dataService.loadAll;
-
-    // controller state variables 
-    var allData = null;
-    var filterFuncs = null;
-    var currentData = null;
-    var selectedData = null;
-
-    // Index of the column that should provide the sort key
-    var sortByIdx = 0;
-
-    // Sort in asending (true) or descending (false) order
-    var sortOrderAsc = true; 
-
-    // Array of functions for each column used for comparison during sort.
-    var compareFunctions = null;
-
-    // Variables to track load and render times
-    var startTime;
-    var loadStartTime;
-
-
-    /** Load the data from the backend **/ 
-    loadStartTime = Date.now();
-    function loadData() { 
-      loadFn().then(
-        function (serverData) {
-          $scope.header = serverData.header;
-          $scope.loadTime = (Date.now() - loadStartTime)/1000;
-
-          // keep polling if the data are not ready yet
-          if ($scope.header.resultsStillLoading) {
-            $scope.state = c.ST_STILL_LOADING;
-            $timeout(loadData, 5000);
-            return;
-          }
-
-          // get the filter colunms and an array to hold filter data by user
-          var fcol = getFilterColumns(serverData);
-          $scope.filterCols = fcol[0];
-          $scope.filterVals = fcol[1];
-
-          // Add extra columns and retrieve the image columns
-          var otherCols = [ Column.regular(c.COL_BUGS) ];
-          var imageCols = getImageColumns(serverData);
-
-          // Concat to get all columns
-          // NOTE: The order is important since filters are rendered first, 
-          // followed by regular columns and images 
-          $scope.allCols = $scope.filterCols.concat(otherCols, imageCols);
-
-          // Pre-process the data and get the filter functions.
-          var dataFilters = getDataAndFilters(serverData, $scope.filterCols, 
-                                              otherCols, imageCols);
-          allData = dataFilters[0];
-          filterFuncs = dataFilters[1];
-
-          // Get regular columns (== not image columns)
-          var regularCols = $scope.filterCols.concat(otherCols);
-
-          // Get the compare functions for regular and image columns. These
-          // are then used to sort by the respective columns. 
-          compareFunctions = DataRow.getCompareFunctions(regularCols, 
-                                                         imageCols);
-
-          // Filter and sort the results to get them ready for rendering
-          updateResults();
-
-          // Data are ready for display
-          $scope.state = c.ST_READY;
-        },
-        function (httpErrResponse) {
-          console.log(httpErrResponse);        
-        });
-    };
-
-    /*
-     * updateResults
-     * Central render function. Everytime settings/filters/etc. changed
-     * this function is called to filter, sort and splice the data. 
-     *
-     * NOTE (stephana): There is room for improvement here: before filtering
-     * and sorting we could check if this is necessary. But this has not been
-     * a bottleneck so far. 
-     */
-    function updateResults () {
-      // run digest before we update the results. This allows
-      // updateResults to be called from functions trigger by ngChange
-      $scope.updating = true;
-      startTime = Date.now();
-
-      // delay by one render cycle so it can be called via ng-change
-      $timeout(function() {
-        // filter data 
-        selectedData = filterData(allData, filterFuncs, $scope.filterVals);
-
-        // sort the selected data.
-        sortData(selectedData, compareFunctions, sortByIdx, sortOrderAsc);
-
-        // only conside the elements that we really need
-        var nRecords = $scope.settings.nRecords;
-        currentData = selectedData.slice(0, parseInt(nRecords));
-
-        DataRow.setRowspanValues(currentData, $scope.mergeIdenticalRows);
-
-        // update the scope with relevant data for rendering.
-        $scope.data = currentData;
-        $scope.totalRecords = allData.length;
-        $scope.showingRecords = currentData.length;
-        $scope.selectedRecords = selectedData.length;
-        $scope.updating = false;
-
-        // measure the filter time and total render time (via timeout).
-        $scope.filterTime = Date.now() - startTime;
-        $timeout(function() { 
-          $scope.renderTime = Date.now() - startTime;
-        });
-      });
-    };
-
-    /**
-     * Generate the style value to set the width of images. 
-     * 
-     * @param {Column} col Column that we are trying to render. 
-     * @param {int} paddingPx Number of padding pixels.
-     * @param {string} defaultVal Default value if not an image column.
-     *
-     * @return {string} Value to be used in ng-style element to set the width 
-     *                  of a image column.
-     **/
-    $scope.getImageWidthStyle = function (col, paddingPx, defaultVal) { 
-      var result = (col.ctype === c.COL_T_IMAGE) ? 
-                   ($scope.imageSize + paddingPx + 'px') : defaultVal;
-      return result;
-    };
-
-    /**
-     * Sets the column by which to sort the data. If called for the 
-     * currently sorted column it will cause the sort to toggle between
-     * ascending and descending. 
-     * 
-     * @param {int} colIdx Index of the column to use for sorting. 
-     **/
-    $scope.sortBy = function (colIdx) { 
-      if (sortByIdx === colIdx) { 
-        sortOrderAsc = !sortOrderAsc;
-      } else {
-        sortByIdx = colIdx;
-        sortOrderAsc = true;
-      }
-      updateResults();
-    };
-
-    /**
-     * Helper function to generate a CSS class indicating whether this column 
-     * is the sort key. If it is a class name with the sort direction (Asc/Desc) is 
-     * return otherwise the default value is returned. In markup we use this 
-     * to display (or not display) an arrow next to the column name. 
-     * 
-     * @param {string} prefix Prefix of the classname to be generated. 
-     * @param {int} idx Index of the target column.
-     * @param {string} defaultVal Value to return if current column is not used
-     *                            for sorting. 
-     *
-     * @return {string} CSS class name that a combination of the prefix and 
-     *                  direction indicator ('Asc' or 'Desc') if the column is 
-     *                  used for sorting. Otherwise the defaultVal is returned.
-     **/
-    $scope.getSortedClass = function (prefix, idx, defaultVal) {
-      if (idx === sortByIdx) { 
-        return prefix + ((sortOrderAsc) ? 'Asc' : 'Desc');
-      }
-
-      return defaultVal; 
-    };
-
-    /**
-     * Checkbox to merge identical records has change. Force an update.
-     **/
-    $scope.mergeRowsChanged = function () {
-      updateResults();
-    }
-
-    /**
-     * Max number of records to display has changed. Force an update. 
-     **/
-    $scope.maxRecordsChanged = function () {
-      updateResults();
-    };
-
-    /**
-     * Filter settings changed. Force an update. 
-     **/
-    $scope.filtersChanged = function () { 
-      updateResults();
-    };
-
-    /**
-     * Sets all possible values of the specified values to the given value.
-     * That means all checkboxes are eiter selected or unselected.
-     * Then force an update.
-     * 
-     * @param {int} idx Index of the target filter column.
-     * @param {boolean} val Value to set the filter values to. 
-     *
-     **/
-    $scope.setFilterAll = function (idx, val) {
-      for(var i=0, len=$scope.filterVals[idx].length; i<len; i++) {
-        $scope.filterVals[idx][i] = val;
-      }
-      updateResults();
-    };
-
-    /**
-     * Toggle the values of a filter. This toggles all values in a 
-     * filter. 
-     * 
-     * @param {int} idx Index of the target filter column.
-     **/
-    $scope.setFilterToggle = function (idx) { 
-      for(var i=0, len=$scope.filterVals[idx].length; i<len; i++) {
-        $scope.filterVals[idx][i] = !$scope.filterVals[idx][i];
-      }
-      updateResults();
-    };
-
-    // ****************************************
-    // Initialize the scope.
-    // ****************************************
-
-    // Inject the constants into the scope and set the initial state. 
-    $scope.c = c;
-    $scope.state = c.ST_LOADING;
-
-    // Initial settings
-    $scope.settings = {
-      showThumbnails: true,
-      imageSize: c.IMAGE_SIZES[0],
-      nRecords: c.MAX_RECORDS[0],
-      mergeIdenticalRows: true
-    };
-
-    // Initial values for filters set in loadData()
-    $scope.filterVals = [];
-
-    // Information about records - set in loadData()
-    $scope.totalRecords = 0;
-    $scope.showingRecords = 0;
-    $scope.updating = false;
-
-    // Trigger the data loading. 
-    loadData();
-
-  }]);
-
-  // data structs to interface with markup and backend
-  /**
-   * Models a column. It aggregates attributes of all 
-   * columns types. Some might be empty. See convenience 
-   * factory methods below for different column types.
-   * 
-   * @param {string} key Uniquely identifies this columns
-   * @param {string} ctype Type of columns. Use COL_* constants. 
-   * @param {string} ctitle Human readable title of the column.
-   * @param {string} ftype Filter type. Use FILTER_* constants.
-   * @param {FilterOpt[]} foptions Filter options. For 'checkbox' filters this 
-                                   is used to render all the checkboxes. 
-                                   For freeform filters this is a list of all
-                                   available values. 
-   * @param {string} baseUrl Baseurl for image columns. All URLs are relative 
-                             to this.
-   *
-   * @return {Column} Instance of the Column class. 
-   **/
-  function Column(key, ctype, ctitle, ftype, foptions, baseUrl) { 
-    this.key = key; 
-    this.ctype = ctype;
-    this.ctitle = ctitle;
-    this.ftype = ftype;
-    this.foptions = foptions;
-    this.baseUrl = baseUrl;
-    this.foptionsArr = [];
-
-    // get the array of filter options for lookup in indexOfOptVal
-    if (this.foptions) {
-      for(var i=0, len=foptions.length; i<len; i++) {
-        this.foptionsArr.push(this.foptions[i].value);
-      }
-    }
-  }
-
-  /**
-   * Find the index of an value in a column with a fixed set
-   * of options. 
-   * 
-   * @param {string} optVal Value of the column.
-   *
-   * @return {int} Index of optVal in this column.
-   **/
-  Column.prototype.indexOfOptVal = function (optVal) {
-    return this.foptionsArr.indexOf(optVal);
-  };
-
-  /**
-   * Set filter options for this column.
-   * 
-   * @param {FilterOpt[]} foptions Possible values for this column. 
-   **/
-  Column.prototype.setFilterOptions = function (foptions) { 
-    this.foptions = foptions;
-  };
-
-  /**
-   * Factory function to create a filter column. Same args as Column()
-   **/
-  Column.filter = function(key, ctitle, ftype, foptions) { 
-    return new Column(key, c.COL_T_FILTER, ctitle || key, ftype, foptions); 
-  }
-
-  /**
-   * Factory function to create an image column. Same args as Column()
-   **/
-  Column.image = function (key, ctitle, baseUrl) { 
-    return new Column(key, c.COL_T_IMAGE, ctitle || key, null, null, baseUrl); 
-  };
-
-  /**
-   * Factory function to create a regular column. Same args as Column()
-   **/
-  Column.regular = function (key, ctitle) { 
-    return new Column(key, c.COL_T_REGULAR, ctitle || key); 
-  }; 
-
-  /**
-   * Helper class to wrap a single option in a filter. 
-   * 
-   * @param {string} value Option value. 
-   * @param {int} count Number of instances of this option in the dataset.
-   *
-   * @return {} Instance of FiltertOpt
-   **/
-  function FilterOpt(value, count) { 
-    this.value = value; 
-    this.count = count;
-  }
-
-  /**
-   * Container for a single row in the dataset.
-   * 
-   * @param {int} rowspan Number of rows (including this and following rows) 
-                          that have identical values. 
-   * @param {string[]} dataCols Values of the respective columns (combination
-                                of filter and regular columns)
-   * @param {ImgVal[]} imageCols Image meta data for the image columns.
-   *
-   * @return {DataRow} Instance of DataRow. 
-   **/
-  function DataRow(rowspan, dataCols, imageCols) { 
-    this.rowspan = rowspan;
-    this.dataCols = dataCols;
-    this.imageCols = imageCols;
-  }
-
-  /**
-   * Gets the comparator functions for the columns in this dataset.
-   * The comparators are then used to sort the dataset by the respective
-   * column. 
-   *
-   * @param {Column[]} dataCols Data columns (= non-image columns)
-   * @param {Column[]} imgCols Image columns.
-   *
-   * @return {Function[]} Array of functions that can be used to sort by the 
-   *                      respective column.
-   **/
-  DataRow.getCompareFunctions = function (dataCols, imgCols) {
-    var result = [];
-    for(var i=0, len=dataCols.length; i<len; i++) { 
-      result.push(( function (col, idx) { 
-        return function (a, b) {
-          return (a.dataCols[idx] < b.dataCols[idx]) ? -1 : 
-                 ((a.dataCols[idx] === b.dataCols[idx]) ? 0 : 1);
-        };
-      }(dataCols[i], i) ));
-    }
-
-    for(var i=0, len=imgCols.length; i<len; i++) { 
-      result.push((function (col, idx) { 
-        return function (a,b) {
-          var aVal = a.imageCols[idx].percent;
-          var bVal = b.imageCols[idx].percent;
-
-          return (aVal < bVal) ? -1 : ((aVal === bVal) ? 0 : 1);
-        };
-      }(imgCols[i], i) ));
-    }
-
-    return result;
-  };
-
-  /**
-  * Set the rowspan values of a given array of DataRow instances.
-  * 
-  * @param {DataRow[]} data Dataset in desired order (after sorting).
-  * @param {mergeRows} mergeRows Indicate whether to sort 
-   **/
-  DataRow.setRowspanValues = function (data, mergeRows) {
-    var curIdx, rowspan, cur;
-    if (mergeRows) { 
-      for(var i=0, len=data.length; i<len;) {
-        curIdx = i;
-        cur = data[i];
-        rowspan = 1;
-        for(i++; ((i<len) && (data[i].dataCols === cur.dataCols)); i++) {
-          rowspan++;
-          data[i].rowspan=0;
-        }
-        data[curIdx].rowspan = rowspan;
-      }
-    } else {
-      for(var i=0, len=data.length; i<len; i++) { 
-        data[i].rowspan = 1;
-      }
-    }
-  };
-
-  /**
-   * Wrapper class for image related data.
-   * 
-   * @param {string} url Relative Url of the image or null if not available.
-   * @param {float} percent Percent of pixels that are differing.
-   * @param {int} value Absolute number of pixes differing.
-   *
-   * @return {ImgVal} Instance of ImgVal.
-   **/
-  function ImgVal(url, percent, value) {
-    this.url = url;
-    this.percent = percent;
-    this.value = value;
-  }
-
-  /**
-   * Extracts the filter columns from the JSON response of the server. 
-   * 
-   * @param {object} data Server response. 
-   *
-   * @return {Column[]} List of filter columns as described in 'header' field. 
-   **/
-  function getFilterColumns(data) {
-    var result = [];
-    var vals = [];
-    var colOrder = data.extraColumnOrder;
-    var colHeaders = data.extraColumnHeaders;
-    var fopts, optVals, val;
-
-    for(var i=0, len=colOrder.length; i<len; i++) {
-      if (colHeaders[colOrder[i]].isFilterable) {
-        if (colHeaders[colOrder[i]].useFreeformFilter) {
-          result.push(Column.filter(colOrder[i], 
-                                    colHeaders[colOrder[i]].headerText, 
-                                    c.FILTER_FREE_FORM));
-          vals.push('');
-        }
-        else {
-          fopts = [];
-          optVals = [];
-
-          // extract the different options for this column
-          for(var j=0, jlen=colHeaders[colOrder[i]].valuesAndCounts.length; 
-              j<jlen; j++) {
-                val = colHeaders[colOrder[i]].valuesAndCounts[j];
-                fopts.push(new FilterOpt(val[0], val[1]));
-                optVals.push(false);
-          }
-
-          // ad the column and values
-          result.push(Column.filter(colOrder[i], 
-                                    colHeaders[colOrder[i]].headerText, 
-                                    c.FILTER_CHECK_BOX, 
-                                    fopts));
-          vals.push(optVals);
-        }
-      }
-    }
-
-    return [result, vals];
-  }
-
-  /**
-   * Extracts the image columns from the JSON response of the server. 
-   * 
-   * @param {object} data Server response. 
-   *
-   * @return {Column[]} List of images columns as described in 'header' field. 
-   **/
-  function getImageColumns(data) {
-    var CO = c.IMG_COL_ORDER;
-    var imgSet;
-    var result = [];
-    for(var i=0, len=CO.length; i<len; i++) { 
-      imgSet = data.imageSets[CO[i].key];
-      result.push(Column.image(CO[i].key, 
-                               imgSet.description, 
-                               ensureTrailingSlash(imgSet.baseUrl)));
-    }
-    return result;
-  }
-
-  /**
-   * Make sure Url has a trailing '/'. 
-   * 
-   * @param {string} url Base url. 
-   * @return {string} Same url with a trailing '/' or same as input if it 
-                      already contained '/'.
-   **/
-  function ensureTrailingSlash(url) { 
-    var result = url.trim();
-
-    // TODO: remove !!!
-    result = fixUrl(url);
-    if (result[result.length-1] !== '/') {
-      result += '/';
-    }
-    return result;
-  }
-
-  // TODO: remove. The backend should provide absoute URLs
-  function fixUrl(url) {
-    url = url.trim();
-    if ('http' === url.substr(0, 4)) {
-      return url;
-    }
-
-    var idx = url.indexOf('static');
-    if (idx != -1) {
-      return '/' + url.substr(idx);
-    }
-
-    return url;
-  };
-
-  /**
-   * Processes that data and returns filter functions. 
-   * 
-   * @param {object} Server response.
-   * @param {Column[]} filterCols Filter columns. 
-   * @param {Column[]} otherCols Columns that are neither filters nor images.
-   * @param {Column[]} imageCols Image columns.
-   *
-   * @return {[]} Returns a pair [dataRows, filterFunctions] where:
-   *       - dataRows is an array of DataRow instances.
-   *       - filterFunctions is an array of functions that can be used to 
-   *         filter the column at the corresponding index. 
-   *
-   **/
-  function getDataAndFilters(data, filterCols, otherCols, imageCols) {
-    var el;
-    var result = [];
-    var lookupIndices = [];
-    var indexerFuncs = [];
-    var temp;
-
-    // initialize the lookupIndices
-    var filterFuncs = initIndices(filterCols, lookupIndices, indexerFuncs);
-
-    // iterate over the data and get the rows
-    for(var i=0, len=data.imagePairs.length; i<len; i++) {
-      el = data.imagePairs[i];
-      temp = new DataRow(1, getColValues(el, filterCols, otherCols),
-                                 getImageValues(el, imageCols));
-      result.push(temp);
-
-      // index the row
-      for(var j=0, jlen=filterCols.length; j < jlen; j++) {
-        indexerFuncs[j](lookupIndices[j], filterCols[j], temp.dataCols[j], i);
-      }
-    }
-
-    setFreeFormFilterOptions(filterCols, lookupIndices);
-    return [result, filterFuncs];
-  }
-
-  /**
-   * Initiazile the lookup indices and indexer functions for the filter
-   * columns. 
-   * 
-   * @param {Column} filterCols Filter columns
-   * @param {[]} lookupIndices Will be filled with datastructures for 
-                               fast lookup (output parameter)
-   * @param {[]} lookupIndices Will be filled with functions to index data 
-                               of the column with the corresponding column.
-   *
-   * @return {[]} Returns an array of filter functions that can be used to 
-                  filter the respective column.  
-   **/
-  function initIndices(filterCols, lookupIndices, indexerFuncs) {
-    var filterFuncs = [];
-    var temp;
-
-    for(var i=0, len=filterCols.length; i<len; i++) { 
-      if (filterCols[i].ftype === c.FILTER_FREE_FORM) {
-        lookupIndices.push({});
-        indexerFuncs.push(indexFreeFormValue);
-        filterFuncs.push(
-          getFreeFormFilterFunc(lookupIndices[lookupIndices.length-1]));
-      }
-      else if (filterCols[i].ftype === c.FILTER_CHECK_BOX) { 
-        temp = [];
-        for(var j=0, jlen=filterCols[i].foptions.length; j<jlen; j++) {
-          temp.push([]);
-        }
-        lookupIndices.push(temp);
-        indexerFuncs.push(indexDiscreteValue);
-        filterFuncs.push(
-          getDiscreteFilterFunc(lookupIndices[lookupIndices.length-1]));
-      }
-    }
-
-    return filterFuncs; 
-  }
-
-  /**
-   * Helper function that extracts the values of free form columns from 
-   * the lookupIndex and injects them into the Column object as FilterOpt 
-   * objects.
-   **/
-  function setFreeFormFilterOptions(filterCols, lookupIndices) {
-    var temp, k;
-    for(var i=0, len=filterCols.length; i<len; i++) { 
-      if (filterCols[i].ftype === c.FILTER_FREE_FORM) { 
-        temp = []
-        for(k in lookupIndices[i]) { 
-          if (lookupIndices[i].hasOwnProperty(k)) { 
-            temp.push(new FilterOpt(k, lookupIndices[i][k].length));
-          }
-        }
-        filterCols[i].setFilterOptions(temp);
-      }
-    }
-  }
-
-  /**
-   * Index a discrete column (column with fixed number of values). 
-   *
-   **/
-  function indexDiscreteValue(lookupIndex, col, dataVal, dataRowIndex) {
-    var i = col.indexOfOptVal(dataVal);
-    lookupIndex[i].push(dataRowIndex);
-  }
-
-  /**
-   * Index a column with free form text (= not fixed upfront)
-   *
-   **/
-  function indexFreeFormValue(lookupIndex, col, dataVal, dataRowIndex) { 
-    if (!lookupIndex[dataVal]) { 
-      lookupIndex[dataVal] = [];
-    }
-    lookupIndex[dataVal].push(dataRowIndex);
-  }
-
-
-  /**
-   * Get the function to filter a column with the given lookup index
-   * for discrete (fixed upfront) values. 
-   * 
-   **/
-  function getDiscreteFilterFunc(lookupIndex) { 
-    return function(filterVal) {
-      var result = [];
-      for(var i=0, len=lookupIndex.length; i < len; i++) {
-        if (filterVal[i]) { 
-          // append the indices to the current array
-          result.push.apply(result, lookupIndex[i]);
-        }
-      }
-      return { nofilter: false, records: result };
-    };
-  }
-
-  /**
-   * Get the function to filter a column with the given lookup index
-   * for free form values.
-   * 
-   **/
-  function getFreeFormFilterFunc(lookupIndex) {
-    return function(filterVal) {
-      filterVal = filterVal.trim();
-      if (filterVal === '') {
-        return { nofilter: true };
-      }
-      return { 
-        nofilter: false, 
-        records: lookupIndex[filterVal] || []
-      };
-    };
-  }
-
-  /**
-   * Filters the data based on the given filterColumns and 
-   * corresponding filter values. 
-   * 
-   * @return {[]} Subset of the input dataset based on the 
-   *              filter values.
-   **/
-  function filterData(data, filterFuncs, filterVals) {
-    var recordSets = [];
-    var filterResult;
-
-    // run through all the filters
-    for(var i=0, len=filterFuncs.length; i<len; i++) { 
-      filterResult = filterFuncs[i](filterVals[i]);
-      if (!filterResult.nofilter) { 
-        recordSets.push(filterResult.records);
-      }
-    }
-
-    // If there are no restrictions then return the whole dataset.
-    if (recordSets.length === 0) {
-      return data;
-    } 
-
-    // intersect the records returned by filters. 
-    var targets = intersectArrs(recordSets);
-    var result = [];
-    for(var i=0, len=targets.length; i<len; i++) {
-      result.push(data[targets[i]]);
-    }
-
-    return result; 
-  }
-
-  /**
-   * Creates an object where the keys are the elements of the input array
-   * and the values are true. To be used for set operations with integer.
-   **/
-  function arrToObj(arr) { 
-    var o = {};
-    var i,len;
-    for(i=0, len=arr.length; i<len; i++) { 
-      o[arr[i]] = true;
-    }
-    return o;
-  }
-
-  /**
-   * Converts the keys of an object to an array after converting 
-   * each key to integer. To be used for set operations with integers.  
-   **/
-  function objToArr(obj) { 
-    var result = [];
-    for(var k in obj) {
-      if (obj.hasOwnProperty(k)) { 
-        result.push(parseInt(k));
-      }
-    }
-    return result;
-  }
-
-  /**
-   * Find the intersection of a set of arrays.
-   **/
-  function intersectArrs(sets) {
-    var temp, obj;
-
-    if (sets.length === 1) { 
-      return sets[0];
-    }
-
-    // sort by size and load the smallest into the object
-    sets.sort(function(a,b) { return a.length - b.length; });
-    obj = arrToObj(sets[0]); 
-
-    // shrink the hash as we fail to find elements in the other sets
-    for(var i=1, len=sets.length; i<len; i++) { 
-      temp = arrToObj(sets[i]);
-      for(var k in obj) {
-        if (obj.hasOwnProperty(k) && !temp[k]) { 
-          delete obj[k];
-        }
-      }
-    }
-    
-    return objToArr(obj);
-  }
-
-  /**
-   * Extract the column values from an ImagePair (contained in the server 
-   * response) into filter and data columns. 
-   *
-   * @return {[]} Array of data contained in one data row.
-   **/
-  function getColValues(imagePair, filterCols, otherCols) { 
-    var result = [];
-    for(var i=0, len=filterCols.length; i<len; i++) { 
-      result.push(imagePair.extraColumns[filterCols[i].key]);
-    }
-
-    for(var i=0, len=otherCols.length; i<len; i++) { 
-      result.push(get_robust(imagePair, ['expectations', otherCols[i].key]));
-    }
-
-    return result;
-  }
-
-  /**
-   * Extract the image meta data from an Image pair returned by the server.
-   **/
-  function getImageValues(imagePair, imageCols) {
-    var result=[];
-    var url, value, percent, diff;
-    var CO = c.IMG_COL_ORDER;
-
-    for(var i=0, len=imageCols.length; i<len; i++) {
-      percent = get_robust(imagePair, CO[i].percentField);
-      value = get_robust(imagePair, CO[i].valueField);
-      url = get_robust(imagePair, CO[i].urlField);
-      if (url) { 
-        url = imageCols[i].baseUrl + url;
-      }
-      result.push(new ImgVal(url, percent, value));
-    }
-
-    return result;
-  }
-
-  /**
-   * Given an object find sub objects for the given index without 
-   * throwing an error if any of the sub objects do not exist. 
-   **/
-  function get_robust(obj, idx) {
-    if (!idx) {
-      return;
-    }
-
-    for(var i=0, len=idx.length; i<len; i++) {
-      if ((typeof obj === 'undefined') || (!idx[i])) {
-        return;  // returns 'undefined'
-      }
-
-      obj = obj[idx[i]];
-    }
-
-    return obj;
-  }
-
-  /**
-   * Set all elements in the array to the given value. 
-   **/
-  function setArrVals(arr, newVal) { 
-    for(var i=0, len=arr.length; i<len; i++) { 
-      arr[i] = newVal;
-    }
-  }
-
-  /**
-   * Toggle the elements of a boolean array. 
-   * 
-   **/
-  function toggleArrVals(arr) { 
-    for(var i=0, len=arr.length; i<len; i++) { 
-      arr[i] = !arr[i];
-    }
-  }
-
-  /**
-   * Sort the array of DataRow instances with the given compare functions 
-   * and the column at the given index either in ascending or descending order.
-   **/
-  function sortData (allData, compareFunctions, sortByIdx, sortOrderAsc) {
-    var cmpFn = compareFunctions[sortByIdx];
-    var useCmp = cmpFn;
-    if (!sortOrderAsc) {
-      useCmp = function ( _ ) {
-        return -cmpFn.apply(this, arguments);
-      };
-    }
-    allData.sort(useCmp);
-  }
-
-
-  // *****************************  Services *********************************
-
-  /**  
-   *  Encapsulates all interactions with the backend by handling 
-   *  Urls and HTTP requests. Also exposes some utility functions
-   *  related to processing Urls. 
-   */
-  app.factory('dataService', [ '$http', function ($http) {
-    /** Backend related constants  **/ 
-    var c = {
-      /** Url to retrieve failures */ 
-      FAILURES: '/results/failures',
-
-      /** Url to retrieve all GM results */ 
-      ALL:      '/results/all'
-    };
-
-    /**
-     * Convenience function to retrieve all results.
-     * 
-     * @return {Promise} Will resolve to either the data (success) or to 
-     *                   the HTTP response (error).
-     **/
-    function loadAll() {
-      return httpGetData(c.ALL);
-    }
-
-    /**
-     * Make a HTTP get request with the given query parameters.
-     * 
-     * @param {} 
-     * @param {}
-     *
-     * @return {} 
-     **/
-    function httpGetData(url, queryParams) {
-      var reqConfig = {
-        method: 'GET',
-        url: url,
-        params: queryParams
-      };
-
-      return $http(reqConfig).then(
-        function(successResp) {
-          return successResp.data;
-        });
-    }
-
-    /**
-     * Takes an arbitrary number of objects and generates a Url encoded
-     * query string.
-     *
-     **/
-    function getQueryString( _params_ ) {
-      var result = [];
-      for(var i=0, len=arguments.length; i < len; i++) {
-        if (arguments[i]) {
-          for(var k in arguments[i]) { 
-            if (arguments[i].hasOwnProperty(k)) {
-              result.push(encodeURIComponent(k) + '=' + 
-                          encodeURIComponent(arguments[i][k]));
-            }
-          }
-        }
-      }
-      return result.join("&");
-    }
-
-    // Interface of the service:
-    return {
-      getQueryString: getQueryString,
-      loadAll: loadAll
-    };
-
-  }]);  
-
-})();