1579 lines
56 KiB
JavaScript
Executable File
1579 lines
56 KiB
JavaScript
Executable File
/*
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Copyright 2012 Igor Vaynberg
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Version: @@ver@@ Timestamp: @@timestamp@@
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Licensed under the Apache License, Version 2.0 (the "License"); you may not use this work except in
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compliance with the License. You may obtain a copy of the License in the LICENSE file, or at:
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software distributed under the License is
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distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and limitations under the License.
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*/
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(function ($, undefined) {
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"use strict";
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/*global document, window, jQuery, console */
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if (window.Select2 !== undefined) {
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return;
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}
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var KEY, AbstractSelect2, SingleSelect2, MultiSelect2;
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KEY = {
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TAB: 9,
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ENTER: 13,
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ESC: 27,
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SPACE: 32,
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LEFT: 37,
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UP: 38,
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RIGHT: 39,
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DOWN: 40,
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SHIFT: 16,
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CTRL: 17,
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ALT: 18,
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PAGE_UP: 33,
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PAGE_DOWN: 34,
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HOME: 36,
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END: 35,
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BACKSPACE: 8,
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DELETE: 46,
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isArrow: function (k) {
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k = k.which ? k.which : k;
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switch (k) {
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case KEY.LEFT:
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case KEY.RIGHT:
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case KEY.UP:
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case KEY.DOWN:
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return true;
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}
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return false;
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},
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isControl: function (k) {
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k = k.which ? k.which : k;
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switch (k) {
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case KEY.SHIFT:
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case KEY.CTRL:
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case KEY.ALT:
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return true;
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}
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return false;
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},
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isFunctionKey: function (k) {
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k = k.which ? k.which : k;
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return k >= 112 && k <= 123;
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}
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};
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function indexOf(value, array) {
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var i = 0, l = array.length, v;
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if (typeof value == 'undefined') {
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return -1;
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}
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if (value.constructor === String) {
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for (; i < l; i = i + 1) if (value.localeCompare(array[i]) === 0) return i;
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} else {
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for (; i < l; i = i + 1) {
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v = array[i];
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if (v.constructor === String) {
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if (v.localeCompare(value) === 0) return i;
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} else {
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if (v === value) return i;
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}
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}
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}
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return -1;
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}
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/**
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* Compares equality of a and b taking into account that a and b may be strings, in which case localeCompare is used
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* @param a
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* @param b
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*/
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function equal(a, b) {
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if (a === b) return true;
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if (a === undefined || b === undefined) return false;
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if (a === null || b === null) return false;
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if (a.constructor === String) return a.localeCompare(b) === 0;
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if (b.constructor === String) return b.localeCompare(a) === 0;
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return false;
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}
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/**
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* Splits the string into an array of values, trimming each value. An empty array is returned for nulls or empty
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* strings
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* @param string
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* @param separator
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*/
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function splitVal(string, separator) {
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var val, i, l;
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if (string === null || string.length < 1) return [];
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val = string.split(separator);
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for (i = 0, l = val.length; i < l; i = i + 1) val[i] = $.trim(val[i]);
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return val;
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}
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function getSideBorderPadding(element) {
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return element.outerWidth() - element.width();
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}
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function installKeyUpChangeEvent(element) {
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element.bind("keydown", function () {
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element.data("keyup-change-value", element.val());
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});
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element.bind("keyup", function () {
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if (element.val() !== element.data("keyup-change-value")) {
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element.trigger("keyup-change");
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}
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});
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}
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/**
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* filters mouse events so an event is fired only if the mouse moved.
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*
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* filters out mouse events that occur when mouse is stationary but
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* the elements under the pointer are scrolled.
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*/
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$(document).delegate("*", "mousemove", function (e) {
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$(document).data("select2-lastpos", {x: e.pageX, y: e.pageY});
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});
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function installFilteredMouseMove(element) {
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element.bind("mousemove", function (e) {
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var lastpos = $(document).data("select2-lastpos");
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if (lastpos === undefined || lastpos.x !== e.pageX || lastpos.y !== e.pageY) {
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$(e.target).trigger("mousemove-filtered", e);
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}
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});
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}
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/**
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* Debounces a function. Returns a function that calls the original fn function only if no invocations have been made
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* within the last quietMillis milliseconds.
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*
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* @param quietMillis number of milliseconds to wait before invoking fn
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* @param fn function to be debounced
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* @return debounced version of fn
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*/
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function debounce(quietMillis, fn) {
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var timeout;
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return function () {
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window.clearTimeout(timeout);
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timeout = window.setTimeout(fn, quietMillis);
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};
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}
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function installDebouncedScroll(threshold, element) {
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var notify = debounce(threshold, function (e) { element.trigger("scroll-debounced", e);});
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element.bind("scroll", function (e) {
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if (indexOf(e.target, element.get()) >= 0) notify(e);
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});
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}
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function killEvent(event) {
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event.preventDefault();
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event.stopPropagation();
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}
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function measureTextWidth(e) {
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var sizer, width;
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sizer = $("<div></div>").css({
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position: "absolute",
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left: "-1000px",
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top: "-1000px",
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display: "none",
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fontSize: e.css("fontSize"),
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fontFamily: e.css("fontFamily"),
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fontStyle: e.css("fontStyle"),
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fontWeight: e.css("fontWeight"),
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letterSpacing: e.css("letterSpacing"),
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textTransform: e.css("textTransform"),
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whiteSpace: "nowrap"
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});
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sizer.text(e.val());
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$("body").append(sizer);
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width = sizer.width();
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sizer.remove();
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return width;
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}
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/**
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* Produces an ajax-based query function
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*
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* @param options object containing configuration paramters
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* @param options.transport function that will be used to execute the ajax request. must be compatible with parameters supported by $.ajax
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* @param options.url url for the data
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* @param options.data a function(searchTerm, pageNumber, context) that should return an object containing query string parameters for the above url.
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* @param options.dataType request data type: ajax, jsonp, other datatatypes supported by jQuery's $.ajax function or the transport function if specified
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* @param options.quietMillis (optional) milliseconds to wait before making the ajaxRequest, helps debounce the ajax function if invoked too often
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* @param options.results a function(remoteData, pageNumber) that converts data returned form the remote request to the format expected by Select2.
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* The expected format is an object containing the following keys:
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* results array of objects that will be used as choices
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* more (optional) boolean indicating whether there are more results available
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* Example: {results:[{id:1, text:'Red'},{id:2, text:'Blue'}], more:true}
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*/
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function ajax(options) {
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var timeout, // current scheduled but not yet executed request
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requestSequence = 0, // sequence used to drop out-of-order responses
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handler = null,
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quietMillis = options.quietMillis || 100;
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return function (query) {
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window.clearTimeout(timeout);
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timeout = window.setTimeout(function () {
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requestSequence += 1; // increment the sequence
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var requestNumber = requestSequence, // this request's sequence number
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data = options.data, // ajax data function
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transport = options.transport || $.ajax;
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data = data.call(this, query.term, query.page, query.context);
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if( null !== handler){
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handler.abort();
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}
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handler = transport.call(null, {
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url: options.url,
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dataType: options.dataType,
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data: data,
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success: function (data) {
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if (requestNumber < requestSequence) {
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return;
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}
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// TODO 3.0 - replace query.page with query so users have access to term, page, etc.
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var results = options.results(data, query.page);
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self.context = results.context;
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query.callback(results);
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}
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});
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}, quietMillis);
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};
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}
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/**
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* Produces a query function that works with a local array
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*
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* @param options object containing configuration parameters. The options parameter can either be an array or an
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* object.
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*
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* If the array form is used it is assumed that it contains objects with 'id' and 'text' keys.
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*
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* If the object form is used ti is assumed that it contains 'data' and 'text' keys. The 'data' key should contain
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* an array of objects that will be used as choices. These objects must contain at least an 'id' key. The 'text'
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* key can either be a String in which case it is expected that each element in the 'data' array has a key with the
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* value of 'text' which will be used to match choices. Alternatively, text can be a function(item) that can extract
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* the text.
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*/
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function local(options) {
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var data = options, // data elements
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text = function (item) { return ""+item.text; }; // function used to retrieve the text portion of a data item that is matched against the search
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if (!$.isArray(data)) {
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text = data.text;
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// if text is not a function we assume it to be a key name
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if (!$.isFunction(text)) text = function (item) { return item[data.text]; };
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data = data.results;
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}
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return function (query) {
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var t = query.term, filtered = {};
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if (t === "") {
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query.callback({results: data});
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return;
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}
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filtered.results = $(data)
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.filter(function () {return query.matcher(t, text(this));})
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.get();
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query.callback(filtered);
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};
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}
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// TODO javadoc
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function tags(data) {
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// TODO even for a function we should probably return a wrapper that does the same object/string check as
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// the function for arrays. otherwise only functions that return objects are supported.
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if ($.isFunction(data)) {
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return data;
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}
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// if not a function we assume it to be an array
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return function (query) {
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var t = query.term, filtered = {results: []};
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$(data).each(function () {
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var isObject = this.text !== undefined,
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text = isObject ? this.text : this;
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if (t === "" || query.matcher(t, text)) {
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filtered.results.push(isObject ? this : {id: this, text: this});
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}
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});
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query.callback(filtered);
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};
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}
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/**
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* blurs any Select2 container that has focus when an element outside them was clicked or received focus
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*/
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$(document).ready(function () {
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$(document).delegate("*", "mousedown focusin touchend", function (e) {
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var target = $(e.target).closest("div.select2-container").get(0);
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$(document).find("div.select2-container-active").each(function () {
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if (this !== target) $(this).data("select2").blur();
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});
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});
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});
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/**
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* Creates a new class
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*
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* @param superClass
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* @param methods
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*/
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function clazz(SuperClass, methods) {
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var constructor = function () {};
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constructor.prototype = new SuperClass;
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constructor.prototype.constructor = constructor;
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constructor.prototype.parent = SuperClass.prototype;
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constructor.prototype = $.extend(constructor.prototype, methods);
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return constructor;
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}
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AbstractSelect2 = clazz(Object, {
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bind: function (func) {
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var self = this;
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return function () {
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func.apply(self, arguments);
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};
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},
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init: function (opts) {
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var results, search, resultsSelector = ".select2-results";
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// prepare options
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this.opts = opts = this.prepareOpts(opts);
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this.id=opts.id;
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// destroy if called on an existing component
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if (opts.element.data("select2") !== undefined &&
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opts.element.data("select2") !== null) {
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this.destroy();
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}
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this.enabled=true;
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this.container = this.createContainer();
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if (opts.element.attr("class") !== undefined) {
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this.container.addClass(opts.element.attr("class"));
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}
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// swap container for the element
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this.opts.element
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.data("select2", this)
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.hide()
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.after(this.container);
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this.container.data("select2", this);
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this.dropdown = this.container.find(".select2-drop");
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this.results = results = this.container.find(resultsSelector);
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this.search = search = this.container.find("input[type=text]");
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this.resultsPage = 0;
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this.context = null;
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// initialize the container
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this.initContainer();
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installFilteredMouseMove(this.results);
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this.container.delegate(resultsSelector, "mousemove-filtered", this.bind(this.highlightUnderEvent));
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installDebouncedScroll(80, this.results);
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this.container.delegate(resultsSelector, "scroll-debounced", this.bind(this.loadMoreIfNeeded));
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// if jquery.mousewheel plugin is installed we can prevent out-of-bounds scrolling of results via mousewheel
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if ($.fn.mousewheel) {
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results.mousewheel(function (e, delta, deltaX, deltaY) {
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var top = results.scrollTop(), height;
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if (deltaY > 0 && top - deltaY <= 0) {
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results.scrollTop(0);
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killEvent(e);
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} else if (deltaY < 0 && results.get(0).scrollHeight - results.scrollTop() + deltaY <= results.height()) {
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results.scrollTop(results.get(0).scrollHeight - results.height());
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killEvent(e);
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}
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});
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}
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installKeyUpChangeEvent(search);
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search.bind("keyup-change", this.bind(this.updateResults));
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search.bind("focus", function () { search.addClass("select2-focused");});
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search.bind("blur", function () { search.removeClass("select2-focused");});
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this.container.delegate(resultsSelector, "click", this.bind(function (e) {
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if ($(e.target).closest(".select2-result:not(.select2-disabled)").length > 0) {
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this.highlightUnderEvent(e);
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this.selectHighlighted(e);
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} else {
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killEvent(e);
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this.focusSearch();
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}
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}));
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if ($.isFunction(this.opts.initSelection)) {
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// initialize selection based on the current value of the source element
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this.initSelection();
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// if the user has provided a function that can set selection based on the value of the source element
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// we monitor the change event on the element and trigger it, allowing for two way synchronization
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this.monitorSource();
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}
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if (opts.element.is(":disabled")) this.disable();
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},
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destroy: function () {
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var select2 = this.opts.element.data("select2");
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if (select2 !== undefined) {
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select2.container.remove();
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select2.opts.element
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.removeData("select2")
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.unbind(".select2")
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.show();
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}
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},
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prepareOpts: function (opts) {
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var element, select, idKey;
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element = opts.element;
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if (element.get(0).tagName.toLowerCase() === "select") {
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this.select = select = opts.element;
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}
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if (select) {
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// these options are not allowed when attached to a select because they are picked up off the element itself
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$.each(["id", "multiple", "ajax", "query", "createSearchChoice", "initSelection", "data", "tags"], function () {
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if (this in opts) {
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throw new Error("Option '" + this + "' is not allowed for Select2 when attached to a <select> element.");
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}
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});
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}
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opts = $.extend({}, {
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formatResult: function (data) { return data.text; },
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formatSelection: function (data) { return data.text; },
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formatNoMatches: function () { return "No matches found"; },
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formatInputTooShort: function (input, min) { return "Please enter " + (min - input.length) + " more characters"; },
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minimumResultsForSearch: 0,
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minimumInputLength: 0,
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id: function (e) { return e.id; },
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matcher: function(term, text) {
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return text.toUpperCase().indexOf(term.toUpperCase()) >= 0;
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}
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}, opts);
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if (typeof(opts.id) !== "function") {
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idKey = opts.id;
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opts.id = function (e) { return e[idKey]; };
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}
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if (select) {
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opts.query = this.bind(function (query) {
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var data = {results: [], more: false},
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term = query.term,
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placeholder = this.getPlaceholder();
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element.find("option").each(function (i) {
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var e = $(this),
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text = e.text();
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if (i === 0 && placeholder !== undefined && text === "") return true;
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if (query.matcher(term, text)) {
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data.results.push({id: e.attr("value"), text: text});
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}
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});
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query.callback(data);
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});
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// this is needed because inside val() we construct choices from options and there id is hardcoded
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opts.id=function(e) { return e.id; };
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} else {
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if (!("query" in opts)) {
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if ("ajax" in opts) {
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opts.query = ajax(opts.ajax);
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} else if ("data" in opts) {
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opts.query = local(opts.data);
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} else if ("tags" in opts) {
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opts.query = tags(opts.tags);
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opts.createSearchChoice = function (term) { return {id: term, text: term}; };
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opts.initSelection = function (element) {
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var data = [];
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$(splitVal(element.val(), ",")).each(function () {
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data.push({id: this, text: this});
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});
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return data;
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};
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}
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}
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}
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if (typeof(opts.query) !== "function") {
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throw "query function not defined for Select2 " + opts.element.attr("id");
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}
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return opts;
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},
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/**
|
|
* Monitor the original element for changes and update select2 accordingly
|
|
*/
|
|
monitorSource: function () {
|
|
this.opts.element.bind("change.select2", this.bind(function (e) {
|
|
if (this.opts.element.data("select2-change-triggered") !== true) {
|
|
this.initSelection();
|
|
}
|
|
}));
|
|
},
|
|
|
|
/**
|
|
* Triggers the change event on the source element
|
|
*/
|
|
triggerChange: function () {
|
|
// Prevents recursive triggering
|
|
this.opts.element.data("select2-change-triggered", true);
|
|
this.opts.element.trigger("change");
|
|
this.opts.element.data("select2-change-triggered", false);
|
|
},
|
|
|
|
|
|
enable: function() {
|
|
if (this.enabled) return;
|
|
|
|
this.enabled=true;
|
|
this.container.removeClass("select2-container-disabled");
|
|
},
|
|
|
|
disable: function() {
|
|
if (!this.enabled) return;
|
|
|
|
this.close();
|
|
|
|
this.enabled=false;
|
|
this.container.addClass("select2-container-disabled");
|
|
},
|
|
|
|
opened: function () {
|
|
return this.container.hasClass("select2-dropdown-open");
|
|
},
|
|
|
|
open: function () {
|
|
if (this.opened()) return;
|
|
|
|
this.container.addClass("select2-dropdown-open").addClass("select2-container-active");
|
|
|
|
this.updateResults(true);
|
|
this.dropdown.show();
|
|
this.ensureHighlightVisible();
|
|
this.focusSearch();
|
|
},
|
|
|
|
close: function () {
|
|
if (!this.opened()) return;
|
|
|
|
this.dropdown.hide();
|
|
this.container.removeClass("select2-dropdown-open");
|
|
this.results.empty();
|
|
this.clearSearch();
|
|
},
|
|
|
|
clearSearch: function () {
|
|
|
|
},
|
|
|
|
ensureHighlightVisible: function () {
|
|
var results = this.results, children, index, child, hb, rb, y, more;
|
|
|
|
children = results.children(".select2-result");
|
|
index = this.highlight();
|
|
|
|
if (index < 0) return;
|
|
|
|
child = $(children[index]);
|
|
|
|
hb = child.offset().top + child.outerHeight();
|
|
|
|
// if this is the last child lets also make sure select2-more-results is visible
|
|
if (index === children.length - 1) {
|
|
more = results.find("li.select2-more-results");
|
|
if (more.length > 0) {
|
|
hb = more.offset().top + more.outerHeight();
|
|
}
|
|
}
|
|
|
|
rb = results.offset().top + results.outerHeight();
|
|
if (hb > rb) {
|
|
results.scrollTop(results.scrollTop() + (hb - rb));
|
|
}
|
|
y = child.offset().top - results.offset().top;
|
|
|
|
// make sure the top of the element is visible
|
|
if (y < 0) {
|
|
results.scrollTop(results.scrollTop() + y); // y is negative
|
|
}
|
|
},
|
|
|
|
moveHighlight: function (delta) {
|
|
var choices = this.results.children(".select2-result"),
|
|
index = this.highlight();
|
|
|
|
while (index > -1 && index < choices.length) {
|
|
index += delta;
|
|
if (!$(choices[index]).hasClass("select2-disabled")) {
|
|
this.highlight(index);
|
|
break;
|
|
}
|
|
}
|
|
},
|
|
|
|
highlight: function (index) {
|
|
var choices = this.results.children(".select2-result");
|
|
|
|
if (arguments.length === 0) {
|
|
return indexOf(choices.filter(".select2-highlighted")[0], choices.get());
|
|
}
|
|
|
|
choices.removeClass("select2-highlighted");
|
|
|
|
if (index >= choices.length) index = choices.length - 1;
|
|
if (index < 0) index = 0;
|
|
|
|
$(choices[index]).addClass("select2-highlighted");
|
|
this.ensureHighlightVisible();
|
|
|
|
if (this.opened()) this.focusSearch();
|
|
},
|
|
|
|
highlightUnderEvent: function (event) {
|
|
var el = $(event.target).closest(".select2-result");
|
|
if (el.length > 0) {
|
|
this.highlight(el.index());
|
|
}
|
|
},
|
|
|
|
loadMoreIfNeeded: function () {
|
|
var results = this.results,
|
|
more = results.find("li.select2-more-results"),
|
|
below, // pixels the element is below the scroll fold, below==0 is when the element is starting to be visible
|
|
offset = -1, // index of first element without data
|
|
page = this.resultsPage + 1;
|
|
|
|
if (more.length === 0) return;
|
|
|
|
below = more.offset().top - results.offset().top - results.height();
|
|
|
|
if (below <= 0) {
|
|
more.addClass("select2-active");
|
|
this.opts.query({
|
|
term: this.search.val(),
|
|
page: page,
|
|
context: self.context,
|
|
matcher: self.opts.matcher,
|
|
callback: this.bind(function (data) {
|
|
var parts = [], self = this;
|
|
$(data.results).each(function () {
|
|
parts.push("<li class='select2-result'>");
|
|
parts.push(self.opts.formatResult(this));
|
|
parts.push("</li>");
|
|
});
|
|
more.before(parts.join(""));
|
|
results.find(".select2-result").each(function (i) {
|
|
var e = $(this);
|
|
if (e.data("select2-data") !== undefined) {
|
|
offset = i;
|
|
} else {
|
|
e.data("select2-data", data.results[i - offset - 1]);
|
|
}
|
|
});
|
|
if (data.more) {
|
|
more.removeClass("select2-active");
|
|
} else {
|
|
more.remove();
|
|
}
|
|
this.resultsPage = page;
|
|
})});
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @param initial whether or not this is the call to this method right after the dropdown has been opened
|
|
*/
|
|
updateResults: function (initial) {
|
|
var search = this.search, results = this.results, opts = this.opts, self=this;
|
|
|
|
// if the search is currently hidden we do not alter the results
|
|
if (initial !== true && this.showSearchInput === false) {
|
|
return;
|
|
}
|
|
|
|
search.addClass("select2-active");
|
|
|
|
function render(html) {
|
|
results.html(html);
|
|
results.scrollTop(0);
|
|
search.removeClass("select2-active");
|
|
}
|
|
|
|
if (search.val().length < opts.minimumInputLength) {
|
|
render("<li class='select2-no-results'>" + opts.formatInputTooShort(search.val(), opts.minimumInputLength) + "</li>");
|
|
return;
|
|
}
|
|
|
|
this.resultsPage = 1;
|
|
opts.query({
|
|
term: search.val(),
|
|
page: this.resultsPage,
|
|
context: null,
|
|
matcher: opts.matcher,
|
|
callback: this.bind(function (data) {
|
|
var parts = [], // html parts
|
|
def; // default choice
|
|
|
|
// create a default choice and prepend it to the list
|
|
if (this.opts.createSearchChoice && search.val() !== "") {
|
|
def = this.opts.createSearchChoice.call(null, search.val(), data.results);
|
|
if (def !== undefined && def !== null && self.id(def) !== undefined && self.id(def) !== null) {
|
|
if ($(data.results).filter(
|
|
function () {
|
|
return equal(self.id(this), self.id(def));
|
|
}).length === 0) {
|
|
data.results.unshift(def);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (data.results.length === 0) {
|
|
render("<li class='select2-no-results'>" + opts.formatNoMatches(search.val()) + "</li>");
|
|
return;
|
|
}
|
|
|
|
$(data.results).each(function () {
|
|
parts.push("<li class='select2-result'>");
|
|
parts.push(opts.formatResult(this));
|
|
parts.push("</li>");
|
|
});
|
|
|
|
if (data.more === true) {
|
|
parts.push("<li class='select2-more-results'>Loading more results...</li>");
|
|
}
|
|
|
|
render(parts.join(""));
|
|
results.children(".select2-result").each(function (i) {
|
|
var d = data.results[i];
|
|
$(this).data("select2-data", d);
|
|
});
|
|
this.postprocessResults(data, initial);
|
|
})});
|
|
},
|
|
|
|
cancel: function () {
|
|
this.close();
|
|
},
|
|
|
|
blur: function () {
|
|
/* we do this in a timeout so that current event processing can complete before this code is executed.
|
|
this allows tab index to be preserved even if this code blurs the textfield */
|
|
window.setTimeout(this.bind(function () {
|
|
this.close();
|
|
this.container.removeClass("select2-container-active");
|
|
this.clearSearch();
|
|
this.selection.find(".select2-search-choice-focus").removeClass("select2-search-choice-focus");
|
|
this.search.blur();
|
|
}), 10);
|
|
},
|
|
|
|
focusSearch: function () {
|
|
/* we do this in a timeout so that current event processing can complete before this code is executed.
|
|
this makes sure the search field is focussed even if the current event would blur it */
|
|
window.setTimeout(this.bind(function () {
|
|
this.search.focus();
|
|
}), 10);
|
|
},
|
|
|
|
selectHighlighted: function () {
|
|
var data = this.results.find(".select2-highlighted:not(.select2-disabled)").data("select2-data");
|
|
if (data) {
|
|
this.onSelect(data);
|
|
}
|
|
},
|
|
|
|
getPlaceholder: function () {
|
|
return this.opts.element.attr("placeholder") || this.opts.element.data("placeholder") || this.opts.placeholder;
|
|
},
|
|
|
|
/**
|
|
* Get the desired width for the container element. This is
|
|
* derived first from option `width` passed to select2, then
|
|
* the inline 'style' on the original element, and finally
|
|
* falls back to the jQuery calculated element width.
|
|
*
|
|
* @returns The width string (with units) for the container.
|
|
*/
|
|
getContainerWidth: function () {
|
|
var style, attrs, matches, i, l;
|
|
if (this.opts.width !== undefined)
|
|
return this.opts.width;
|
|
|
|
style = this.opts.element.attr('style');
|
|
if (style !== undefined) {
|
|
attrs = style.split(';');
|
|
for (i = 0, l = attrs.length; i < l; i = i + 1) {
|
|
matches = attrs[i].replace(/\s/g, '')
|
|
.match(/width:(([-+]?([0-9]*\.)?[0-9]+)(px|em|ex|%|in|cm|mm|pt|pc))/);
|
|
if (matches !== null && matches.length >= 1)
|
|
return matches[1];
|
|
}
|
|
}
|
|
return this.opts.element.width() + 'px';
|
|
}
|
|
});
|
|
|
|
SingleSelect2 = clazz(AbstractSelect2, {
|
|
|
|
createContainer: function () {
|
|
return $("<div></div>", {
|
|
"class": "select2-container",
|
|
"style": "width: " + this.getContainerWidth()
|
|
}).html([
|
|
" <a href='javascript:void(0)' class='select2-choice'>",
|
|
" <span></span><abbr class='select2-search-choice-close' style='display:none;'></abbr>",
|
|
" <div><b></b></div>" ,
|
|
"</a>",
|
|
" <div class='select2-drop' style='display:none;'>" ,
|
|
" <div class='select2-search'>" ,
|
|
" <input type='text' autocomplete='off'/>" ,
|
|
" </div>" ,
|
|
" <ul class='select2-results'>" ,
|
|
" </ul>" ,
|
|
"</div>"].join(""));
|
|
},
|
|
|
|
open: function () {
|
|
|
|
if (this.opened()) return;
|
|
|
|
this.parent.open.apply(this, arguments);
|
|
|
|
},
|
|
|
|
close: function () {
|
|
if (!this.opened()) return;
|
|
this.parent.close.apply(this, arguments);
|
|
},
|
|
|
|
focus: function () {
|
|
this.close();
|
|
this.selection.focus();
|
|
},
|
|
|
|
isFocused: function () {
|
|
return this.selection.is(":focus");
|
|
},
|
|
|
|
cancel: function () {
|
|
this.parent.cancel.apply(this, arguments);
|
|
this.selection.focus();
|
|
},
|
|
|
|
initContainer: function () {
|
|
|
|
var selection, container = this.container, clickingInside = false,
|
|
selector = ".select2-choice";
|
|
|
|
this.selection = selection = container.find(selector);
|
|
|
|
this.search.bind("keydown", this.bind(function (e) {
|
|
switch (e.which) {
|
|
case KEY.UP:
|
|
case KEY.DOWN:
|
|
this.moveHighlight((e.which === KEY.UP) ? -1 : 1);
|
|
killEvent(e);
|
|
return;
|
|
case KEY.TAB:
|
|
case KEY.ENTER:
|
|
this.selectHighlighted();
|
|
killEvent(e);
|
|
return;
|
|
case KEY.ESC:
|
|
this.cancel(e);
|
|
e.preventDefault();
|
|
return;
|
|
}
|
|
}));
|
|
|
|
container.delegate(selector, "click", this.bind(function (e) {
|
|
clickingInside = true;
|
|
|
|
if (this.opened()) {
|
|
this.close();
|
|
selection.focus();
|
|
} else if (this.enabled) {
|
|
this.open();
|
|
}
|
|
e.preventDefault();
|
|
|
|
clickingInside = false;
|
|
}));
|
|
container.delegate(selector, "keydown", this.bind(function (e) {
|
|
if (!this.enabled || e.which === KEY.TAB || KEY.isControl(e) || KEY.isFunctionKey(e) || e.which === KEY.ESC) {
|
|
return;
|
|
}
|
|
this.open();
|
|
if (e.which === KEY.PAGE_UP || e.which === KEY.PAGE_DOWN || e.which === KEY.SPACE) {
|
|
// prevent the page from scrolling
|
|
killEvent(e);
|
|
}
|
|
if (e.which === KEY.ENTER) {
|
|
// do not propagate the event otherwise we open, and propagate enter which closes
|
|
killEvent(e);
|
|
}
|
|
}));
|
|
container.delegate(selector, "focus", function () { if (this.enabled) container.addClass("select2-container-active"); });
|
|
container.delegate(selector, "blur", this.bind(function () {
|
|
if (clickingInside) return;
|
|
if (!this.opened()) this.blur();
|
|
}));
|
|
|
|
selection.delegate("abbr", "click", this.bind(function (e) {
|
|
if (!this.enabled) return;
|
|
this.val("");
|
|
killEvent(e);
|
|
this.close();
|
|
this.triggerChange();
|
|
}));
|
|
|
|
this.setPlaceholder();
|
|
},
|
|
|
|
/**
|
|
* Sets selection based on source element's value
|
|
*/
|
|
initSelection: function () {
|
|
var selected;
|
|
if (this.opts.element.val() === "") {
|
|
this.updateSelection({id: "", text: ""});
|
|
} else {
|
|
selected = this.opts.initSelection.call(null, this.opts.element);
|
|
if (selected !== undefined && selected !== null) {
|
|
this.updateSelection(selected);
|
|
}
|
|
}
|
|
|
|
this.close();
|
|
this.setPlaceholder();
|
|
},
|
|
|
|
prepareOpts: function () {
|
|
var opts = this.parent.prepareOpts.apply(this, arguments);
|
|
|
|
if (opts.element.get(0).tagName.toLowerCase() === "select") {
|
|
// install sthe selection initializer
|
|
opts.initSelection = function (element) {
|
|
var selected = element.find(":selected");
|
|
// a single select box always has a value, no need to null check 'selected'
|
|
return {id: selected.attr("value"), text: selected.text()};
|
|
};
|
|
}
|
|
|
|
return opts;
|
|
},
|
|
|
|
setPlaceholder: function () {
|
|
var placeholder = this.getPlaceholder();
|
|
|
|
if (this.opts.element.val() === "" && placeholder !== undefined) {
|
|
|
|
// check for a first blank option if attached to a select
|
|
if (this.select && this.select.find("option:first").text() !== "") return;
|
|
|
|
if (typeof(placeholder) === "object") {
|
|
this.updateSelection(placeholder);
|
|
} else {
|
|
this.selection.find("span").html(placeholder);
|
|
}
|
|
this.selection.addClass("select2-default");
|
|
|
|
this.selection.find("abbr").hide();
|
|
}
|
|
},
|
|
|
|
postprocessResults: function (data, initial) {
|
|
var selected = 0, self = this, showSearchInput = true;
|
|
|
|
// find the selected element in the result list
|
|
|
|
this.results.find(".select2-result").each(function (i) {
|
|
if (equal(self.id($(this).data("select2-data")), self.opts.element.val())) {
|
|
selected = i;
|
|
return false;
|
|
}
|
|
});
|
|
|
|
// and highlight it
|
|
|
|
this.highlight(selected);
|
|
|
|
// hide the search box if this is the first we got the results and there are a few of them
|
|
|
|
if (initial === true) {
|
|
showSearchInput = this.showSearchInput = data.results.length >= this.opts.minimumResultsForSearch;
|
|
this.container.find(".select2-search")[showSearchInput ? "removeClass" : "addClass"]("select2-search-hidden");
|
|
|
|
//add "select2-with-searchbox" to the container if search box is shown
|
|
this.container[showSearchInput ? "addClass" : "removeClass"]("select2-with-searchbox");
|
|
}
|
|
|
|
},
|
|
|
|
onSelect: function (data) {
|
|
var old = this.opts.element.val();
|
|
|
|
this.opts.element.val(this.id(data));
|
|
this.updateSelection(data);
|
|
this.close();
|
|
this.selection.focus();
|
|
|
|
if (!equal(old, this.id(data))) { this.triggerChange(); }
|
|
},
|
|
|
|
updateSelection: function (data) {
|
|
this.selection
|
|
.find("span")
|
|
.html(this.opts.formatSelection(data));
|
|
|
|
this.selection.removeClass("select2-default");
|
|
|
|
if (this.opts.allowClear && this.getPlaceholder() !== undefined) {
|
|
this.selection.find("abbr").show();
|
|
}
|
|
},
|
|
|
|
val: function () {
|
|
var val, data = null;
|
|
|
|
if (arguments.length === 0) {
|
|
return this.opts.element.val();
|
|
}
|
|
|
|
val = arguments[0];
|
|
|
|
if (this.select) {
|
|
// val is an id
|
|
this.select
|
|
.val(val)
|
|
.find(":selected").each(function () {
|
|
data = {id: $(this).attr("value"), text: $(this).text()};
|
|
return false;
|
|
});
|
|
this.updateSelection(data);
|
|
} else {
|
|
// val is an object. !val is true for [undefined,null,'']
|
|
this.opts.element.val(!val ? "" : this.id(val));
|
|
this.updateSelection(val);
|
|
}
|
|
this.setPlaceholder();
|
|
|
|
},
|
|
|
|
clearSearch: function () {
|
|
this.search.val("");
|
|
}
|
|
});
|
|
|
|
MultiSelect2 = clazz(AbstractSelect2, {
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createContainer: function () {
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return $("<div></div>", {
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"class": "select2-container select2-container-multi",
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"style": "width: " + this.getContainerWidth()
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}).html([
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" <ul class='select2-choices'>",
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//"<li class='select2-search-choice'><span>California</span><a href="javascript:void(0)" class="select2-search-choice-close"></a></li>" ,
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" <li class='select2-search-field'>" ,
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" <input type='text' autocomplete='off' style='width: 25px;'>" ,
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" </li>" ,
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"</ul>" ,
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"<div class='select2-drop' style='display:none;'>" ,
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" <ul class='select2-results'>" ,
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" </ul>" ,
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"</div>"].join(""));
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},
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prepareOpts: function () {
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var opts = this.parent.prepareOpts.apply(this, arguments);
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opts = $.extend({}, {
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closeOnSelect: true
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}, opts);
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// TODO validate placeholder is a string if specified
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if (opts.element.get(0).tagName.toLowerCase() === "select") {
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// install sthe selection initializer
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opts.initSelection = function (element) {
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var data = [];
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element.find(":selected").each(function () {
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data.push({id: $(this).attr("value"), text: $(this).text()});
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});
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return data;
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};
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}
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return opts;
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},
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initContainer: function () {
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var selector = ".select2-choices", selection;
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this.searchContainer = this.container.find(".select2-search-field");
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this.selection = selection = this.container.find(selector);
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this.search.bind("keydown", this.bind(function (e) {
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if (!this.enabled) return;
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if (e.which === KEY.BACKSPACE && this.search.val() === "") {
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this.close();
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var choices,
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selected = selection.find(".select2-search-choice-focus");
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if (selected.length > 0) {
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this.unselect(selected.first());
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this.search.width(10);
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killEvent(e);
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return;
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}
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choices = selection.find(".select2-search-choice");
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if (choices.length > 0) {
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choices.last().addClass("select2-search-choice-focus");
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}
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} else {
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selection.find(".select2-search-choice-focus").removeClass("select2-search-choice-focus");
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}
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if (this.opened()) {
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switch (e.which) {
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case KEY.UP:
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case KEY.DOWN:
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this.moveHighlight((e.which === KEY.UP) ? -1 : 1);
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killEvent(e);
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return;
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case KEY.ENTER:
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case KEY.TAB:
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this.selectHighlighted();
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killEvent(e);
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return;
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case KEY.ESC:
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this.cancel(e);
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e.preventDefault();
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return;
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}
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}
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if (e.which === KEY.TAB || KEY.isControl(e) || KEY.isFunctionKey(e) || e.which === KEY.BACKSPACE || e.which === KEY.ESC) {
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return;
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}
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this.open();
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if (e.which === KEY.PAGE_UP || e.which === KEY.PAGE_DOWN) {
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// prevent the page from scrolling
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killEvent(e);
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}
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}));
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this.search.bind("keyup", this.bind(this.resizeSearch));
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this.container.delegate(selector, "click", this.bind(function (e) {
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if (!this.enabled) return;
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this.open();
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this.focusSearch();
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e.preventDefault();
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}));
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this.container.delegate(selector, "focus", this.bind(function () {
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if (!this.enabled) return;
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this.container.addClass("select2-container-active");
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this.clearPlaceholder();
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}));
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// set the placeholder if necessary
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this.clearSearch();
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},
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enable: function() {
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if (this.enabled) return;
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this.parent.enable.apply(this, arguments);
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this.search.show();
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},
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disable: function() {
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if (!this.enabled) return;
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this.parent.disable.apply(this, arguments);
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this.search.hide();
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},
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initSelection: function () {
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var data;
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if (this.opts.element.val() === "") {
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this.updateSelection([]);
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}
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if (this.select || this.opts.element.val() !== "") {
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data = this.opts.initSelection.call(null, this.opts.element);
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if (data !== undefined && data !== null) {
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this.updateSelection(data);
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}
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}
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this.close();
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// set the placeholder if necessary
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this.clearSearch();
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},
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clearSearch: function () {
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var placeholder = this.getPlaceholder();
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if (placeholder !== undefined
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&& this.getVal().length === 0
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&& this.search.hasClass("select2-focused") === false) {
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this.search.val(placeholder).addClass("select2-default");
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// stretch the search box to full width of the container so as much of the placeholder is visible as possible
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this.search.width(this.getContainerWidth());
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} else {
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this.search.val("").width(10);
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}
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},
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clearPlaceholder: function () {
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if (this.search.hasClass("select2-default")) {
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this.search.val("").removeClass("select2-default");
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}
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},
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open: function () {
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if (this.opened()) return;
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this.parent.open.apply(this, arguments);
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this.resizeSearch();
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this.focusSearch();
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},
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close: function () {
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if (!this.opened()) return;
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this.parent.close.apply(this, arguments);
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},
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focus: function () {
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this.close();
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this.search.focus();
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},
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isFocused: function () {
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return this.search.hasClass("select2-focused");
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},
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updateSelection: function (data) {
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var ids = [], filtered = [], self = this;
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// filter out duplicates
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$(data).each(function () {
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if (indexOf(self.id(this), ids) < 0) {
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ids.push(self.id(this));
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filtered.push(this);
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}
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});
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data = filtered;
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this.selection.find(".select2-search-choice").remove();
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$(data).each(function () {
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self.addSelectedChoice(this);
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});
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self.postprocessResults();
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},
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onSelect: function (data) {
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this.addSelectedChoice(data);
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if (this.select) { this.postprocessResults(); }
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if (this.opts.closeOnSelect) {
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this.close();
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this.search.width(10);
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} else {
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this.search.width(10);
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this.resizeSearch();
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}
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// since its not possible to select an element that has already been
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// added we do not need to check if this is a new element before firing change
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this.triggerChange();
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this.focusSearch();
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},
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cancel: function () {
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this.close();
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this.focusSearch();
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},
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addSelectedChoice: function (data) {
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var choice,
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id = this.id(data),
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parts,
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val = this.getVal();
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parts = ["<li class='select2-search-choice'>",
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this.opts.formatSelection(data),
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"<a href='javascript:void(0)' class='select2-search-choice-close' tabindex='-1'></a>",
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"</li>"
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];
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choice = $(parts.join(""));
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choice.find("a")
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.bind("click dblclick", this.bind(function (e) {
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if (!this.enabled) return;
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this.unselect($(e.target));
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this.selection.find(".select2-search-choice-focus").removeClass("select2-search-choice-focus");
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killEvent(e);
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this.close();
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this.focusSearch();
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})).bind("focus", this.bind(function () {
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if (!this.enabled) return;
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this.container.addClass("select2-container-active");
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}));
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choice.data("select2-data", data);
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choice.insertBefore(this.searchContainer);
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val.push(id);
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this.setVal(val);
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},
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unselect: function (selected) {
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var val = this.getVal(),
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index;
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selected = selected.closest(".select2-search-choice");
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if (selected.length === 0) {
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throw "Invalid argument: " + selected + ". Must be .select2-search-choice";
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}
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index = indexOf(this.id(selected.data("select2-data")), val);
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if (index >= 0) {
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val.splice(index, 1);
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this.setVal(val);
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if (this.select) this.postprocessResults();
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}
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selected.remove();
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this.triggerChange();
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},
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postprocessResults: function () {
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var val = this.getVal(),
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choices = this.results.find(".select2-result"),
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self = this;
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choices.each(function () {
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var choice = $(this), id = self.id(choice.data("select2-data"));
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if (indexOf(id, val) >= 0) {
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choice.addClass("select2-disabled");
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} else {
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choice.removeClass("select2-disabled");
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}
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});
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choices.each(function (i) {
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if (!$(this).hasClass("select2-disabled")) {
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self.highlight(i);
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return false;
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}
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});
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},
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resizeSearch: function () {
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var minimumWidth, left, maxWidth, containerLeft, searchWidth;
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minimumWidth = measureTextWidth(this.search) + 10;
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left = this.search.offset().left;
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maxWidth = this.selection.width();
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containerLeft = this.selection.offset().left;
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searchWidth = maxWidth - (left - containerLeft) - getSideBorderPadding(this.search);
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if (searchWidth < minimumWidth) {
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searchWidth = maxWidth - getSideBorderPadding(this.search);
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}
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if (searchWidth < 40) {
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searchWidth = maxWidth - getSideBorderPadding(this.search);
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}
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this.search.width(searchWidth);
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},
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getVal: function () {
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var val;
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if (this.select) {
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val = this.select.val();
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return val === null ? [] : val;
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} else {
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val = this.opts.element.val();
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return splitVal(val, ",");
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}
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},
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setVal: function (val) {
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var unique;
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if (this.select) {
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this.select.val(val);
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} else {
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unique = [];
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// filter out duplicates
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$(val).each(function () {
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if (indexOf(this, unique) < 0) unique.push(this);
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});
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this.opts.element.val(unique.length === 0 ? "" : unique.join(","));
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}
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},
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val: function () {
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var val, data = [], self=this;
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if (arguments.length === 0) {
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return this.getVal();
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}
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val = arguments[0];
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if (this.select) {
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// val is a list of ids
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this.setVal(val);
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this.select.find(":selected").each(function () {
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data.push({id: $(this).attr("value"), text: $(this).text()});
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});
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this.updateSelection(data);
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} else {
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val = (val === null) ? [] : val;
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this.setVal(val);
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// val is a list of objects
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st
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$(val).each(function () { data.push(self.id(this)); });
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this.setVal(data);
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this.updateSelection(val);
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}
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this.clearSearch();
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},
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onSortStart: function() {
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if (this.select) {
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throw new Error("Sorting of elements is not supported when attached to <select>. Attach to <input type='hidden'/> instead.");
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}
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// collapse search field into 0 width so its container can be collapsed as well
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this.search.width(0);
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// hide the container
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this.searchContainer.hide();
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},
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onSortEnd:function() {
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var val=[], self=this;
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// show search and move it to the end of the list
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this.searchContainer.show();
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// make sure the search container is the last item in the list
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this.searchContainer.appendTo(this.searchContainer.parent());
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// since we collapsed the width in dragStarteed, we resize it here
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this.resizeSearch();
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// update selection
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this.selection.find(".select2-search-choice").each(function() {
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val.push(self.opts.id($(this).data("select2-data")));
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});
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this.setVal(val);
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this.triggerChange();
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}
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});
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$.fn.select2 = function () {
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var args = Array.prototype.slice.call(arguments, 0),
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opts,
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select2,
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value, multiple, allowedMethods = ["val", "destroy", "open", "close", "focus", "isFocused", "container", "onSortStart", "onSortEnd", "enable", "disable"];
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this.each(function () {
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if (args.length === 0 || typeof(args[0]) === "object") {
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opts = args.length === 0 ? {} : $.extend({}, args[0]);
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opts.element = $(this);
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if (opts.element.get(0).tagName.toLowerCase() === "select") {
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multiple = opts.element.attr("multiple");
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} else {
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multiple = opts.multiple || false;
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if ("tags" in opts) {opts.multiple = multiple = true;}
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}
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select2 = multiple ? new MultiSelect2() : new SingleSelect2();
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select2.init(opts);
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} else if (typeof(args[0]) === "string") {
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if (indexOf(args[0], allowedMethods) < 0) {
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throw "Unknown method: " + args[0];
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}
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value = undefined;
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select2 = $(this).data("select2");
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if (select2 === undefined) return;
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if (args[0] === "container") {
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value=select2.container;
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} else {
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value = select2[args[0]].apply(select2, args.slice(1));
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}
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if (value !== undefined) {return false;}
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} else {
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throw "Invalid arguments to select2 plugin: " + args;
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}
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});
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return (value === undefined) ? this : value;
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};
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// exports
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window.Select2 = {
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query: {
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ajax: ajax,
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local: local,
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tags: tags
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}, util: {
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debounce: debounce
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}, "class": {
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"abstract": AbstractSelect2,
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"single": SingleSelect2,
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"multi": MultiSelect2
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}
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};
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}(jQuery));
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