109 lines
3.2 KiB
JavaScript
109 lines
3.2 KiB
JavaScript
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dojo.provide("dijit.form.MultiSelect");
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dojo.require("dijit.form._FormWidget");
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dojo.declare("dijit.form.MultiSelect", dijit.form._FormWidget, {
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// summary:
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// Widget version of a <select multiple=true> 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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templateString: "<select multiple='true' ${nameAttrSetting} dojoAttachPoint='containerNode,focusNode' dojoAttachEvent='onchange: _onChange'></select>",
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attributeMap: dojo.delegate(dijit.form._FormWidget.prototype.attributeMap, {
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size: "focusNode"
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}),
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reset: function(){
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// summary:
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// Reset the widget's value to what it was at initialization time
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// TODO: once we inherit from FormValueWidget this won't be needed
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this._hasBeenBlurred = false;
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this._setValueAttr(this._resetValue, true);
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},
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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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},
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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 dojo.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 attr('value') works.
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// description:
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// Returns an array of the selected options' values.
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return this.getSelected().map(function(n){
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return n.value;
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});
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},
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_multiValue: true, // for Form
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_setValueAttr: function(/* Array */values){
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// summary:
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// Hook so attr('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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dojo.query("option",this.containerNode).forEach(function(n){
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n.selected = (dojo.indexOf(values,n.value) != -1);
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});
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},
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invertSelection: function(onChange){
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// summary:
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// Invert the selection
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// onChange: Boolean
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// If null, onChange is not fired.
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dojo.query("option",this.containerNode).forEach(function(n){
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n.selected = !n.selected;
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});
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this._handleOnChange(this.attr('value'), onChange==true);
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},
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_onChange: function(/*Event*/ e){
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this._handleOnChange(this.attr('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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dojo.marginBox(this.domNode, size);
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}
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},
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postCreate: function(){
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this._onChange();
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}
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});
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