define([
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"dojo/_base/array", // indexOf, map, forEach
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"dojo/_base/declare", // declare
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"dojo/dom-geometry", // domGeometry.setMarginBox
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"dojo/sniff", // has("android")
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"dojo/query", // query
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"./_FormValueWidget",
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"dojo/NodeList-dom" // orphan()
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], function(array, declare, domGeometry, has, query, _FormValueWidget){
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// module:
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// dijit/form/MultiSelect
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var MultiSelect = declare("dijit.form.MultiSelect" + (has("dojo-bidi") ? "_NoBidi" : ""), _FormValueWidget, {
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// summary:
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// Widget version of a `<select multiple=multiple>` element,
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// for selecting multiple options.
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// size: Number
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// Number of elements to display on a page
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// NOTE: may be removed in version 2.0, since elements may have variable height;
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// set the size via style="..." or CSS class names instead.
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size: 7,
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baseClass: "dijitMultiSelect",
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templateString: "<select multiple='multiple' ${!nameAttrSetting} data-dojo-attach-point='containerNode,focusNode' data-dojo-attach-event='onchange: _onChange'></select>",
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addSelected: function(/*dijit/form/MultiSelect*/ select){
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// summary:
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// Move the selected nodes of a passed Select widget
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// instance to this Select widget.
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//
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// example:
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// | // move all the selected values from "bar" to "foo"
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// | dijit.byId("foo").addSelected(dijit.byId("bar"));
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select.getSelected().forEach(function(n){
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this.containerNode.appendChild(n);
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// scroll to bottom to see item
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// cannot use scrollIntoView since <option> tags don't support all attributes
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// does not work on IE due to a bug where <select> always shows scrollTop = 0
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this.domNode.scrollTop = this.domNode.offsetHeight; // overshoot will be ignored
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// scrolling the source select is trickier esp. on safari who forgets to change the scrollbar size
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var oldscroll = select.domNode.scrollTop;
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select.domNode.scrollTop = 0;
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select.domNode.scrollTop = oldscroll;
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}, this);
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this._set('value', this.get('value'));
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},
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getSelected: function(){
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// summary:
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// Access the NodeList of the selected options directly
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return query("option", this.containerNode).filter(function(n){
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return n.selected; // Boolean
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}); // dojo/NodeList
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},
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_getValueAttr: function(){
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// summary:
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// Hook so get('value') works.
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// description:
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// Returns an array of the selected options' values.
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// Don't call getSelect.map() because it doesn't return a real array,
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// and that messes up dojo.toJson() calls like in the Form.html test
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return array.map(this.getSelected(), function(n){
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return n.value;
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});
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},
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// Set multiple so parent form widget knows that I return multiple values.
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// Also adding a no-op custom setter; otherwise the multiple property is applied to the <select> node
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// which causes problem on Android < 4.4 with all but the first selected item being deselected.
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multiple: true,
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_setMultipleAttr: function(val){
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},
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_setValueAttr: function(/*String[]*/ values){
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// summary:
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// Hook so set('value', values) works.
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// description:
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// Set the value(s) of this Select based on passed values
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if(has("android")){
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// Workaround bizarre Android bug where deselecting one option selects another one.
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// See https://code.google.com/p/android/issues/detail?id=68285.
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// Could use this code path for all browsers but I worry about IE memory leaks.
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query("option", this.containerNode).orphan().forEach(function(n){
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var option = n.ownerDocument.createElement("option");
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option.value = n.value;
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option.selected = (array.indexOf(values, n.value) != -1);
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option.text = n.text;
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option.originalText = n.originalText; // for bidi support, see has("dojo-bidi") block below
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this.containerNode.appendChild(option);
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}, this);
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}else {
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query("option", this.containerNode).forEach(function(n){
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n.selected = (array.indexOf(values, n.value) != -1);
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});
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}
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this.inherited(arguments);
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},
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invertSelection: function(/*Boolean?*/ onChange){
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// summary:
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// Invert the selection
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// onChange: Boolean
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// If false, onChange is not fired.
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var val = [];
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query("option", this.containerNode).forEach(function(n){
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if(!n.selected){
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val.push(n.value);
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}
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});
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this._setValueAttr(val, !(onChange === false || onChange == null));
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},
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_onChange: function(/*Event*/){
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this._handleOnChange(this.get('value'), true);
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},
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// for layout widgets:
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resize: function(/*Object*/ size){
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if(size){
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domGeometry.setMarginBox(this.domNode, size);
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}
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},
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postCreate: function(){
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this._set('value', this.get('value'));
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this.inherited(arguments);
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}
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});
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if(has("dojo-bidi")){
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MultiSelect = declare("dijit.form.MultiSelect", MultiSelect, {
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addSelected: function(/*dijit/form/MultiSelect*/ select){
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select.getSelected().forEach(function(n){
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n.text = this.enforceTextDirWithUcc(this.restoreOriginalText(n), n.text);
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}, this);
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this.inherited(arguments);
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},
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_setTextDirAttr: function(textDir){
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// to insure the code executed only when _BidiSupport loaded, and only
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// when there was a change in textDir
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if((this.textDir != textDir || !this._created) && this.enforceTextDirWithUcc){
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this._set("textDir", textDir);
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query("option", this.containerNode).forEach(function(option){
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// If the value wasn't defined explicitly, it the same object as
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// option.text. Since the option.text will be modified (by wrapping of UCC)
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// we want to save the original option.value for form submission.
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if(!this._created && option.value === option.text){
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option.value = option.text;
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}
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// apply the bidi support
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option.text = this.enforceTextDirWithUcc(option, option.originalText || option.text);
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}, this);
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}
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}
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});
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}
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return MultiSelect;
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});
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