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angular.module('mgcrea.ngStrap.typeahead', ['mgcrea.ngStrap.tooltip', 'mgcrea.ngStrap.helpers.parseOptions']) .provider('$typeahead', function () { var defaults = this.defaults = { animation: 'am-fade', prefixClass: 'typeahead', prefixEvent: '$typeahead', placement: 'bottom-left', templateUrl: 'typeahead/typeahead.tpl.html', trigger: 'focus', container: false, keyboard: true, html: false, delay: 0, minLength: 1, filter: 'bsAsyncFilter', limit: 6, autoSelect: false, comparator: '', trimValue: true }; this.$get = function ($window, $rootScope, $tooltip, $$rAF, $timeout) { function TypeaheadFactory(element, controller, config) { var $typeahead = {}; // Common vars var options = angular.extend({}, defaults, config); $typeahead = $tooltip(element, options); var parentScope = config.scope; var scope = $typeahead.$scope; scope.$resetMatches = function () { scope.$matches = []; scope.$activeIndex = options.autoSelect ? 0 : -1; // If set to 0, the first match will be highlighted }; scope.$resetMatches(); scope.$activate = function (index) { scope.$$postDigest(function () { $typeahead.activate(index); }); }; scope.$select = function (index, evt) { scope.$$postDigest(function () { $typeahead.select(index); }); }; scope.$isVisible = function () { return $typeahead.$isVisible(); }; // Public methods $typeahead.update = function (matches) { scope.$matches = matches; Iif (scope.$activeIndex >= matches.length) { scope.$activeIndex = options.autoSelect ? 0 : -1; } // wrap in a $timeout so the results are updated // before repositioning safeDigest(scope); $$rAF($typeahead.$applyPlacement); }; $typeahead.activate = function (index) { scope.$activeIndex = index; }; $typeahead.select = function (index) { Iif (index === -1) return; var value = scope.$matches[index].value; // console.log('$setViewValue', value); controller.$setViewValue(value); controller.$render(); scope.$resetMatches(); if (parentScope) parentScope.$digest(); // Emit event scope.$emit(options.prefixEvent + '.select', value, index, $typeahead); }; // Protected methods $typeahead.$isVisible = function () { Iif (!options.minLength || !controller) { return !!scope.$matches.length; } // minLength support return scope.$matches.length && angular.isString(controller.$viewValue) && controller.$viewValue.length >= options.minLength; }; $typeahead.$getIndex = function (value) { var index; for (index = scope.$matches.length; index--;) { if (angular.equals(scope.$matches[index].value, value)) break; } return index; }; $typeahead.$onMouseDown = function (evt) { // Prevent blur on mousedown evt.preventDefault(); evt.stopPropagation(); }; $typeahead.$onKeyDown = function (evt) { if (!/(38|40|13)/.test(evt.keyCode)) return; // Let ngSubmit pass if the typeahead tip is hidden or no option is selected if ($typeahead.$isVisible() && !(evt.keyCode === 13 && scope.$activeIndex === -1)) { evt.preventDefault(); evt.stopPropagation(); } // Select with enter if (evt.keyCode === 13 && scope.$matches.length) { $typeahead.select(scope.$activeIndex); } // Navigate with keyboard else if (evt.keyCode === 38 && scope.$activeIndex > 0) scope.$activeIndex--; else if (evt.keyCode === 40 && scope.$activeIndex < scope.$matches.length - 1) scope.$activeIndex++; else if (angular.isUndefined(scope.$activeIndex)) scope.$activeIndex = 0; scope.$digest(); }; // Overrides var show = $typeahead.show; $typeahead.show = function () { show(); // use timeout to hookup the events to prevent // event bubbling from being processed immediately. $timeout(function () { if ($typeahead.$element) { $typeahead.$element.on('mousedown', $typeahead.$onMouseDown); Eif (options.keyboard) { Eif (element) element.on('keydown', $typeahead.$onKeyDown); } } }, 0, false); }; var hide = $typeahead.hide; $typeahead.hide = function () { Eif ($typeahead.$element) $typeahead.$element.off('mousedown', $typeahead.$onMouseDown); Eif (options.keyboard) { Eif (element) element.off('keydown', $typeahead.$onKeyDown); } Eif (!options.autoSelect) { $typeahead.activate(-1); } hide(); }; return $typeahead; } // Helper functions function safeDigest(scope) { /* eslint-disable no-unused-expressions */ scope.$$phase || (scope.$root && scope.$root.$$phase) || scope.$digest(); /* eslint-enable no-unused-expressions */ } TypeaheadFactory.defaults = defaults; return TypeaheadFactory; }; }) .filter('bsAsyncFilter', function ($filter) { return function (array, expression, comparator) { if (array && angular.isFunction(array.then)) { return array.then(function (results) { return $filter('filter')(results, expression, comparator); }); } return $filter('filter')(array, expression, comparator); }; }) .directive('bsTypeahead', function ($window, $parse, $q, $typeahead, $parseOptions) { var defaults = $typeahead.defaults; return { restrict: 'EAC', require: 'ngModel', link: function postLink(scope, element, attr, controller) { // Directive options var options = { scope: scope }; angular.forEach(['template', 'templateUrl', 'controller', 'controllerAs', 'placement', 'container', 'delay', 'trigger', 'keyboard', 'html', 'animation', 'filter', 'limit', 'minLength', 'watchOptions', 'selectMode', 'autoSelect', 'comparator', 'id', 'prefixEvent', 'prefixClass'], function (key) { if (angular.isDefined(attr[key])) options[key] = attr[key]; }); // use string regex match boolean attr falsy values, leave truthy values be var falseValueRegExp = /^(false|0|)$/i; angular.forEach(['html', 'container', 'trimValue'], function (key) { if (angular.isDefined(attr[key]) && falseValueRegExp.test(attr[key])) options[key] = false; }); // Disable browser autocompletion if (!element.attr('autocomplete')) element.attr('autocomplete', 'off'); // Build proper bsOptions var filter = options.filter || defaults.filter; var limit = options.limit || defaults.limit; var comparator = options.comparator || defaults.comparator; var bsOptions = attr.bsOptions; Eif (filter) bsOptions += ' | ' + filter + ':$viewValue'; if (comparator) bsOptions += ':' + comparator; Eif (limit) bsOptions += ' | limitTo:' + limit; var parsedOptions = $parseOptions(bsOptions); // Initialize typeahead var typeahead = $typeahead(element, controller, options); // Watch options on demand if (options.watchOptions) { // Watch bsOptions values before filtering for changes, drop function calls var watchedOptions = parsedOptions.$match[7].replace(/\|.+/, '').replace(/\(.*\)/g, '').trim(); scope.$watchCollection(watchedOptions, function (newValue, oldValue) { // console.warn('scope.$watch(%s)', watchedOptions, newValue, oldValue); parsedOptions.valuesFn(scope, controller).then(function (values) { typeahead.update(values); controller.$render(); }); }); } // Watch model for changes scope.$watch(attr.ngModel, function (newValue, oldValue) { // console.warn('$watch', element.attr('ng-model'), newValue); scope.$modelValue = newValue; // Publish modelValue on scope for custom templates parsedOptions.valuesFn(scope, controller) .then(function (values) { // Prevent input with no future prospect if selectMode is truthy // @TODO test selectMode Iif (options.selectMode && !values.length && newValue.length > 0) { controller.$setViewValue(controller.$viewValue.substring(0, controller.$viewValue.length - 1)); return; } if (values.length > limit) values = values.slice(0, limit); typeahead.update(values); // Queue a new rendering that will leverage collection loading controller.$render(); }); }); // modelValue -> $formatters -> viewValue controller.$formatters.push(function (modelValue) { // console.warn('$formatter("%s"): modelValue=%o (%o)', element.attr('ng-model'), modelValue, typeof modelValue); var displayValue = parsedOptions.displayValue(modelValue); // If we can determine the displayValue, use that if (displayValue) { return displayValue; } // If there's no display value, attempt to use the modelValue. // If the model is an object not much we can do if (modelValue && typeof modelValue !== 'object') { return modelValue; } return ''; }); // Model rendering in view controller.$render = function () { // console.warn('$render', element.attr('ng-model'), 'controller.$modelValue', typeof controller.$modelValue, controller.$modelValue, 'controller.$viewValue', typeof controller.$viewValue, controller.$viewValue); if (controller.$isEmpty(controller.$viewValue)) { return element.val(''); } var index = typeahead.$getIndex(controller.$modelValue); var selected = index !== -1 ? typeahead.$scope.$matches[index].label : controller.$viewValue; selected = angular.isObject(selected) ? parsedOptions.displayValue(selected) : selected; var value = selected ? selected.toString().replace(/<(?:.|\n)*?>/gm, '') : ''; element.val(options.trimValue === false ? value : value.trim()); }; // Garbage collection scope.$on('$destroy', function () { Eif (typeahead) typeahead.destroy(); options = null; typeahead = null; }); } }; }); |