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|
/**
* @fileOverview Magic Search JS
* @requires AngularJS
*
*/
// Allow the module to be pre-defined with additional dependencies
try{
angular.module('MagicSearch');
} catch (exception) {
angular.module('MagicSearch', []);
}
angular.module('MagicSearch')
.directive('magicSearch', function($compile) {
return {
restrict: 'E',
scope: {
facets_param: '@facets',
filter_keys: '=filterKeys',
strings: '=strings'
},
templateUrl: function (scope, elem) {
return elem.template;
},
controller: function ($scope, $element, $timeout) {
var searchInput = $element.find('.search-input');
$scope.promptString = $scope.strings.prompt;
$scope.currentSearch = [];
$scope.initSearch = function() {
if (typeof $scope.facets_param === 'string') {
// Parse facets JSON and convert to a list of facets.
var tmp = $scope.facets_param.replace(/__apos__/g, "\'").replace(/__dquote__/g, '\\"').replace(/__bslash__/g, "\\");
$scope.facetsObj = JSON.parse(tmp);
}
else {
// Assume this is a usable javascript object
$scope.facetsObj = $scope.facets_param;
}
$scope.facetsSave = $scope.copyFacets($scope.facetsObj);
$scope.initFacets();
};
$scope.initFacets = function() {
// set facets selected and remove them from facetsObj
var initialFacets = window.location.search;
if (initialFacets.indexOf('?') === 0) {
initialFacets = initialFacets.slice(1);
}
initialFacets = initialFacets.split('&');
if (initialFacets.length > 1 || initialFacets[0].length > 0) {
$timeout(function() {
$scope.strings.prompt = '';
});
}
angular.forEach(initialFacets, function(facet, idx) {
var facetParts = facet.split('=');
angular.forEach($scope.facetsObj, function(value, idx) {
if (value.name == facetParts[0]) {
if (value.options === undefined) {
$scope.currentSearch.push({'name':facet, 'label':[value.label, facetParts[1]]});
// allow free-form facets to remain
}
else {
angular.forEach(value.options, function(option, idx) {
if (option.key == facetParts[1]) {
$scope.currentSearch.push({'name':facet, 'label':[value.label, option.label]});
if (value.singleton === true) {
$scope.deleteFacetEntirely(facetParts);
}
else {
$scope.deleteFacetSelection(facetParts);
}
}
});
}
}
});
});
if ($scope.textSearch !== undefined) {
$scope.currentSearch.push({'name':'text='+$scope.textSearch, 'label':[$scope.strings.text, $scope.textSearch]});
}
$scope.filteredObj = $scope.facetsObj;
};
$scope.addFacets = function(facets) {
// add a facets javascript object to the existing list
for (var facet in facets) {
$scope.facetsObj.append(facet);
}
};
$scope.copyFacets = function(facets) {
var ret = [];
for (var i=0; i<facets.length; i++) {
var facet = Object.create(facets[i]);
if (facets[i].options !== undefined) {
facet.options = [];
for (var j=0; j<facets[i].options.length; j++) {
facet.options.push(Object.create(facets[i].options[j]));
}
}
ret.push(facet);
}
return ret;
};
// removes a facet from the menu
$scope.deleteFacetSelection = function(facetParts) {
angular.forEach($scope.facetsObj.slice(), function(facet, idx) {
if (facet.name == facetParts[0]) {
if (facet.options === undefined) {
return; // allow free-form facets to remain
}
for (var i=0; i<facet.options.length; i++) {
var option = facet.options[i];
if (option.key == facetParts[1]) {
$scope.facetsObj[idx].options.splice($scope.facetsObj[idx].options.indexOf(option), 1);
}
}
if (facet.options.length === 0) {
$scope.facetsObj.splice($scope.facetsObj.indexOf(facet), 1);
}
}
});
};
$scope.deleteFacetEntirely = function(facetParts) {
// remove entire facet
angular.forEach($scope.facetsObj.slice(), function(facet, idx) {
if (facet.name == facetParts[0]) {
$scope.facetsObj.splice($scope.facetsObj.indexOf(facet), 1);
}
});
};
searchInput.on('keydown', function($event) {
var key = $event.keyCode || $event.charCode;
if (key == 9) { // prevent default when we can.
$event.preventDefault();
}
});
searchInput.on('keyup', function($event) { // handle ctrl-char input
if ($event.metaKey === true) {
return;
}
var searchVal = searchInput.val();
var key = $event.keyCode || $event.charCode;
if (key == 9) { // tab, so select facet if narrowed down to 1
if ($scope.facetSelected === undefined) {
if ($scope.filteredObj.length != 1) return;
$scope.facetClicked(0, '', $scope.filteredObj[0].name);
}
else {
if ($scope.filteredOptions === undefined || $scope.filteredOptions.length != 1) return;
$scope.optionClicked(0, '', $scope.filteredOptions[0].key);
$scope.resetState();
}
$timeout(function() {
searchInput.val('');
});
return;
}
if (key == 27) { // esc, so cancel and reset everthing
$timeout(function() {
$scope.hideMenu();
searchInput.val('');
});
$scope.resetState();
var textFilter = $scope.textSearch;
if (textFilter === undefined) {
textFilter = '';
}
$scope.$emit('textSearch', textFilter, $scope.filter_keys);
return;
}
if (key == 13) { // enter, so accept value
// if tag search, treat as regular facet
if ($scope.facetSelected && $scope.facetSelected.options === undefined) {
var curr = $scope.facetSelected;
curr.name = curr.name + '=' + searchVal;
curr.label[1] = searchVal;
$scope.currentSearch.push(curr);
$scope.resetState();
$scope.emitQuery();
$scope.showMenu();
}
// if text search treat as search
else {
for (i=0; i<$scope.currentSearch.length; i++) {
if ($scope.currentSearch[i].name.indexOf('text') === 0) {
$scope.currentSearch.splice(i, 1);
}
}
$scope.currentSearch.push({'name':'text='+searchVal, 'label':[$scope.strings.text, searchVal]});
$scope.$apply();
$scope.hideMenu();
searchInput.val('');
$scope.$emit('textSearch', searchVal, $scope.filter_keys);
$scope.textSearch = searchVal;
}
$scope.filteredObj = $scope.facetsObj;
}
else {
if (searchVal === '') {
$scope.filteredObj = $scope.facetsObj;
$scope.$apply();
$scope.$emit('textSearch', '', $scope.filter_keys);
if ($scope.facetSelected && $scope.facetSelected.options === undefined) {
$scope.resetState();
}
}
else {
$scope.filterFacets(searchVal);
}
}
});
searchInput.on('keypress', function($event) { // handle character input
var searchVal = searchInput.val();
var key = $event.which || $event.keyCode || $event.charCode;
if (key != 8 && key != 46 && key != 13 && key != 9 && key != 27) {
searchVal = searchVal + String.fromCharCode(key).toLowerCase();
}
if (searchVal == ' ') { // space and field is empty, show menu
$scope.showMenu();
$timeout(function() {
searchInput.val('');
});
return;
}
if (searchVal === '') {
$scope.filteredObj = $scope.facetsObj;
$scope.$apply();
$scope.$emit('textSearch', '', $scope.filter_keys);
if ($scope.facetSelected && $scope.facetSelected.options === undefined) {
$scope.resetState();
}
return;
}
if (key != 8 && key != 46) {
$scope.filterFacets(searchVal);
}
});
$scope.filterFacets = function(searchVal) {
// try filtering facets/options.. if no facets match, do text search
var i, idx, label;
var filtered = [];
if ($scope.facetSelected === undefined) {
$scope.filteredObj = $scope.facetsObj;
for (i=0; i<$scope.filteredObj.length; i++) {
var facet = $scope.filteredObj[i];
idx = facet.label.toLowerCase().indexOf(searchVal);
if (idx > -1) {
label = [facet.label.substring(0, idx), facet.label.substring(idx, idx + searchVal.length), facet.label.substring(idx + searchVal.length)];
filtered.push({'name':facet.name, 'label':label, 'options':facet.options});
}
}
if (filtered.length > 0) {
$scope.showMenu();
$timeout(function() {
$scope.filteredObj = filtered;
}, 0.1);
}
else {
$scope.$emit('textSearch', searchVal, $scope.filter_keys);
$scope.hideMenu();
}
}
else { // assume option search
$scope.filteredOptions = $scope.facetOptions;
if ($scope.facetOptions === undefined) { // no options, assume free form text facet
return;
}
for (i=0; i<$scope.filteredOptions.length; i++) {
var option = $scope.filteredOptions[i];
idx = option.label.toLowerCase().indexOf(searchVal);
if (idx > -1) {
label = [option.label.substring(0, idx), option.label.substring(idx, idx + searchVal.length), option.label.substring(idx + searchVal.length)];
filtered.push({'key':option.key, 'label':label});
}
}
if (filtered.length > 0) {
$scope.showMenu();
$timeout(function() {
$scope.filteredOptions = filtered;
}, 0.1);
}
}
};
// enable text entry when mouse clicked anywhere in search box
$element.find('.search-main-area').on('click', function($event) {
var target = $($event.target);
if (target.is('.search-main-area')) {
searchInput.trigger('focus');
$scope.showMenu();
}
});
// when facet clicked, add 1st part of facet and set up options
$scope.facetClicked = function($index, $event, name) {
$scope.hideMenu();
var facet = $scope.filteredObj[$index];
var label = facet.label;
if (Array.isArray(label)) {
label = label.join('');
}
$scope.facetSelected = {'name':facet.name, 'label':[label, '']};
if (facet.options !== undefined) {
$scope.filteredOptions = $scope.facetOptions = facet.options;
$scope.showMenu();
}
$timeout(function() {
searchInput.val('');
});
$scope.strings.prompt = '';
$timeout(function() {
searchInput.focus();
});
};
// when option clicked, complete facet and send event
$scope.optionClicked = function($index, $event, name) {
$scope.hideMenu();
var curr = $scope.facetSelected;
curr.name = curr.name + '=' + name;
curr.label[1] = $scope.filteredOptions[$index].label;
if (Array.isArray(curr.label[1])) {
curr.label[1] = curr.label[1].join('');
}
$scope.currentSearch.push(curr);
$scope.resetState();
$scope.emitQuery();
$scope.showMenu();
};
// send event with new query string
$scope.emitQuery = function(removed) {
var query = '';
for (var i=0; i<$scope.currentSearch.length; i++) {
if ($scope.currentSearch[i].name.indexOf('text') !== 0) {
if (query.length > 0) query = query + "&";
query = query + $scope.currentSearch[i].name;
}
}
if (removed !== undefined && removed.indexOf('text') === 0) {
$scope.$emit('textSearch', '', $scope.filter_keys);
$scope.textSearch = undefined;
}
else {
$scope.$emit('searchUpdated', query);
if ($scope.currentSearch.length > 0) {
// prune facets as needed from menus
var newFacet = $scope.currentSearch[$scope.currentSearch.length-1].name;
var facetParts = newFacet.split('=');
angular.forEach($scope.facetsSave, function(facet, idx) {
if (facet.name == facetParts[0]) {
if (facet.singleton === true) {
$scope.deleteFacetEntirely(facetParts);
}
else {
$scope.deleteFacetSelection(facetParts);
}
}
});
}
}
};
// remove facet and either update filter or search
$scope.removeFacet = function($index, $event) {
var removed = $scope.currentSearch[$index].name;
$scope.currentSearch.splice($index, 1);
if ($scope.facetSelected === undefined) {
$scope.emitQuery(removed);
}
else {
$scope.resetState();
searchInput.val('');
}
if ($scope.currentSearch.length === 0) {
$scope.strings.prompt = $scope.promptString;
}
// re-init to restore facets cleanly
$scope.facetsObj = $scope.copyFacets($scope.facetsSave);
$scope.currentSearch = [];
$scope.initFacets();
};
// clear entire searchbar
$scope.clearSearch = function() {
if ($scope.currentSearch.length > 0) {
$scope.currentSearch = [];
$scope.facetsObj = $scope.copyFacets($scope.facetsSave);
$scope.resetState();
$scope.$emit('searchUpdated', '');
$scope.$emit('textSearch', '', $scope.filter_keys);
}
};
$scope.isMatchLabel = function(label) {
return Array.isArray(label);
};
$scope.resetState = function() {
searchInput.val('');
$scope.filteredObj = $scope.facetsObj;
$scope.facetSelected = undefined;
$scope.facetOptions = undefined;
$scope.filteredOptions = undefined;
if ($scope.currentSearch.length === 0) {
$scope.strings.prompt = $scope.promptString;
}
};
// showMenu and hideMenu depend on foundation's dropdown. They need
// to be modified to work with another dropdown implemenation (i.e. bootstrap)
$scope.showMenu = function() {
$timeout(function() {
if ($('#facet-drop').hasClass('open') === false && $scope.filteredObj.length > 0) {
$('.search-input').trigger('click');
}
});
};
$scope.hideMenu = function() {
$(document).foundation('dropdown', 'closeall');
};
$scope.initSearch();
}
};
})
;
|
