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Viewing file: search.js (6.54 KB) -rw-r--r-- Select action/file-type: (+) | (+) | (+) | Code (+) | Session (+) | (+) | SDB (+) | (+) | (+) | (+) | (+) | (+) | define([ 'jquery', '../utils', '../keys' ], function ($, Utils, KEYS) { function Search (decorated, $element, options) { decorated.call(this, $element, options); } Search.prototype.render = function (decorated) { var $search = $( '<span class="select2-search select2-search--inline">' + '<input class="select2-search__field" type="search" tabindex="-1"' + ' autocorrect="off" autocapitalize="none"' + ' spellcheck="false" role="searchbox" aria-autocomplete="list" />' + '</span>' ); this.$searchContainer = $search; this.$search = $search.find('input'); this.$search.prop('autocomplete', this.options.get('autocomplete')); var $rendered = decorated.call(this); this._transferTabIndex(); $rendered.append(this.$searchContainer); return $rendered; }; Search.prototype.bind = function (decorated, container, $container) { var self = this; var resultsId = container.id + '-results'; var selectionId = container.id + '-container'; decorated.call(this, container, $container); self.$search.attr('aria-describedby', selectionId); container.on('open', function () { self.$search.attr('aria-controls', resultsId); self.$search.trigger('focus'); }); container.on('close', function () { self.$search.val(''); self.resizeSearch(); self.$search.removeAttr('aria-controls'); self.$search.removeAttr('aria-activedescendant'); self.$search.trigger('focus'); }); container.on('enable', function () { self.$search.prop('disabled', false); self._transferTabIndex(); }); container.on('disable', function () { self.$search.prop('disabled', true); }); container.on('focus', function (evt) { self.$search.trigger('focus'); }); container.on('results:focus', function (params) { if (params.data._resultId) { self.$search.attr('aria-activedescendant', params.data._resultId); } else { self.$search.removeAttr('aria-activedescendant'); } }); this.$selection.on('focusin', '.select2-search--inline', function (evt) { self.trigger('focus', evt); }); this.$selection.on('focusout', '.select2-search--inline', function (evt) { self._handleBlur(evt); }); this.$selection.on('keydown', '.select2-search--inline', function (evt) { evt.stopPropagation(); self.trigger('keypress', evt); self._keyUpPrevented = evt.isDefaultPrevented(); var key = evt.which; if (key === KEYS.BACKSPACE && self.$search.val() === '') { var $previousChoice = self.$selection .find('.select2-selection__choice').last(); if ($previousChoice.length > 0) { var item = Utils.GetData($previousChoice[0], 'data'); self.searchRemoveChoice(item); evt.preventDefault(); } } }); this.$selection.on('click', '.select2-search--inline', function (evt) { if (self.$search.val()) { evt.stopPropagation(); } }); // Try to detect the IE version should the `documentMode` property that // is stored on the document. This is only implemented in IE and is // slightly cleaner than doing a user agent check. // This property is not available in Edge, but Edge also doesn't have // this bug. var msie = document.documentMode; var disableInputEvents = msie && msie <= 11; // Workaround for browsers which do not support the `input` event // This will prevent double-triggering of events for browsers which support // both the `keyup` and `input` events. this.$selection.on( 'input.searchcheck', '.select2-search--inline', function (evt) { // IE will trigger the `input` event when a placeholder is used on a // search box. To get around this issue, we are forced to ignore all // `input` events in IE and keep using `keyup`. if (disableInputEvents) { self.$selection.off('input.search input.searchcheck'); return; } // Unbind the duplicated `keyup` event self.$selection.off('keyup.search'); } ); this.$selection.on( 'keyup.search input.search', '.select2-search--inline', function (evt) { // IE will trigger the `input` event when a placeholder is used on a // search box. To get around this issue, we are forced to ignore all // `input` events in IE and keep using `keyup`. if (disableInputEvents && evt.type === 'input') { self.$selection.off('input.search input.searchcheck'); return; } var key = evt.which; // We can freely ignore events from modifier keys if (key == KEYS.SHIFT || key == KEYS.CTRL || key == KEYS.ALT) { return; } // Tabbing will be handled during the `keydown` phase if (key == KEYS.TAB) { return; } self.handleSearch(evt); } ); }; /** * This method will transfer the tabindex attribute from the rendered * selection to the search box. This allows for the search box to be used as * the primary focus instead of the selection container. * * @private */ Search.prototype._transferTabIndex = function (decorated) { this.$search.attr('tabindex', this.$selection.attr('tabindex')); this.$selection.attr('tabindex', '-1'); }; Search.prototype.createPlaceholder = function (decorated, placeholder) { this.$search.attr('placeholder', placeholder.text); }; Search.prototype.update = function (decorated, data) { var searchHadFocus = this.$search[0] == document.activeElement; this.$search.attr('placeholder', ''); decorated.call(this, data); this.resizeSearch(); if (searchHadFocus) { this.$search.trigger('focus'); } }; Search.prototype.handleSearch = function () { this.resizeSearch(); if (!this._keyUpPrevented) { var input = this.$search.val(); this.trigger('query', { term: input }); } this._keyUpPrevented = false; }; Search.prototype.searchRemoveChoice = function (decorated, item) { this.trigger('unselect', { data: item }); this.$search.val(item.text); this.handleSearch(); }; Search.prototype.resizeSearch = function () { this.$search.css('width', '25px'); var width = '100%'; if (this.$search.attr('placeholder') === '') { var minimumWidth = this.$search.val().length + 1; width = (minimumWidth * 0.75) + 'em'; } this.$search.css('width', width); }; return Search; }); |
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