Renders an HTML <select> tag containing a set of selectable options.
<netui:select
[accessKey="string_accessKey"]
dataSource="expression_datasource"
[defaultValue="string_or_expression_default"]
[disabled="boolean_disabled"]
[multiple="boolean_multipleSelectEnabled"]
[nullable="boolean_nullable"]
[nullableOptionText="boolean_nullableOptionText"]
[nullableTop="boolean_nullableTop"]
[onBlur="string_onBlur"]
[onChange="string_onChange"]
[onClick="string_onClick"]
[onDblClick="string_onDblClick"]
[onFocus="string_onFocus"]
[onKeyDown="string_onKeyDown"]
[onKeyPress="string_onKeyPress"]
[onKeyUp="string_onKeyUp"]
[onMouseDown="string_onMouseDown"]
[onMouseMove="string_onMouseMove"]
[onMouseOut="string_onMouseOut"]
[onMouseOver="string_onMouseOver"]
[onMouseUp="string_onMouseUp"]
[onSelect="string_onSelect"]
[optionsDataSource="expression_datasource"]
[size="integer_size"]
[style="string_Style"]
[styleClass="string_Class"]
[tabindex="string_tabIndex"]
[tagId="string_tagId"] />
The <netui:select> tag can generate a set of selectable options in two ways:
- they can be dynamically generated by pointing the <netui:select> tag at a String[] object or java.util.HashMap
- they can be statically generated by providing a set of children <netui:selectOption> tags
Dynamically Generated Options
You can dynamically generate a set of selectable options by pointing the <netui:select> tag at a String[].
public String[] _options = {"red", "green", "blue", "orange", "pink", "aqua", "black", "brown", "tan"};
To point the <netui:select> tag
at the String[] object use the optionsDataSource
attribute.
<netui:select optionsDataSource="{pageFlow._options}"Note that you can make the display value and the submitted value differ by pointing the <netui:select> tag at a HashMap object. (Any object that implements the java.util.Map interface will work.)
public HashMap _hashMap = new HashMap(); protected void onCreate() { _hashMap.put("#ff3333", "red"); _hashMap.put("#3333ff", "blue"); _hashMap.put("#33ff33", "green"); }The following HTML will be generated.
<select size="3"> <option value="#3333ff">blue</option> <option value="#33ff33">green</option> <option value="#ff3333">red</option> </select>
Statically Generated Options
To statically generate selecable options, place a set of <netui:selectOption> tags inside the <netui:select> tag.
<netui:select dataSource="{actionForm.selections}" size="5"> <netui:selectOption value="red" /> <netui:selectOption value="blue" /> <netui:selectOption value="green" /> <netui:selectOption value="yellow" /> <netui:selectOption value="orange" /> </netui:select>
Submitting Selections
A <netui:select> is submitted as a String or String[] object, depending on whether the
multiple
attribute is set to true. In the following example, the dataSource
attribute points at a String[] object.
</netui:select dataSource="{actionForm.selections}">
In this case, the <netui:select> tag submits to a String[] field of a Form Bean.
public static class SubmitForm extends FormData { private String[] selections; public void setSelections(String[] selections) { this.selections = selections; } public String[] getSelections() { return this.selections; } }
accessKey | The keyboard navigation key for the element.
The following values are not recommended because they
are often used by browsers: A, C, E, F, G,
H, V, left arrow, and right arrow |
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dataSource | The For example, assume that the Controller file (= JPF file) contains a Form Bean with the property foo. Then the following <netui:textBox> tag will (1) draw populating data from the Form Bean's foo property and (2) submit user defined data to the same property. The When the tag is used to submit data, the data binding expression must refer to a Form Bean property. In cases where the tag is not used to submit data, but is used for displaying data only, the data binding expression need not refer to a Form Bean property. For example, assume that myIterativeData is a member variable on the Controller file ( = JPF file). The following <netui-data:repeater> tag draws its data from myIterativeData. |
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defaultValue | Use in <netui:checkBoxGroup>, <netui:checkBox>, <netui:radioButtonGroup>, and <netui:select> tags Sets the preselected value or values. The If the If the Use in <netui:textArea> and <netui:textBox> tags Sets the initial display text. The |
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disabled | Boolean. If set to true, the button will be visible, but diabled. | ||||||
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multiple | Boolean. Whether or not multi-selection is enabled.
If multiple selection is enabled, a null option will not be displayed, even if
the nullable is set to true. |
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nullable | Boolean.
Whether a option with the value null should be added to the bottom of the list.
If <select> has the multiple attribute set to true, the null option won't be shown. |
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nullableOptionText | Boolean.
If the nullable attribute is set to true, then the nullableOptionText
attribute determines the display text of the null option.
The default is to use the empty string, "", as the display text. |
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nullableTop | Boolean. If set to true, the null option will be at the top of the list | ||||||
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onBlur | The onBlur JavaScript event. | ||||||
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onChange | The onChange JavaScript event. | ||||||
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onClick | The onClick JavaScript event. | ||||||
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onDblClick | The onDblClick JavaScript event. | ||||||
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onFocus | The onFocus JavaScript event. | ||||||
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onKeyDown | The onKeyDown JavaScript event. | ||||||
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onKeyPress | The onKeyPress JavaScript event. | ||||||
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onKeyUp | The onKeyUp JavaScript event. | ||||||
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onMouseDown | The onMouseDown JavaScript event. | ||||||
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onMouseMove | The onMouseMove JavaScript event. | ||||||
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onMouseOut | The onMouseOut JavaScript event. | ||||||
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onMouseOver | The onMouseOver JavaScript event. | ||||||
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onMouseUp | The onMouseUp JavaScript event. | ||||||
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onSelect | The onSelect JavaScript event. | ||||||
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optionsDataSource | The In a <netui:select> tag, the options are
rendered as a set of <netui:option> tags.
The options can be determined dynamically by pointing the
If a java.util.Map object is used, the display name and underlying value of each option may be set independently. (The display name will be rendered based on the value of each Map entry; the underlying value will be rendered based on the key of each Map entry.) If a String[] object is used, the display name and underlying value of each option will be identical. See the Description and Sample sections of this topic for details. Use a data binding expression to point the
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size | The number of visible options | ||||||
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style | The style of the rendered HTML tag. | ||||||
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styleClass | The class of the rendered HTML tag. | ||||||
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tabindex | The tabIndex of the rendered HTML tag. This attribute determines the position of the tag in the sequence of page elements that the user may advance through by pressing the TAB key. | ||||||
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tagId | String value. Sets the For example, assume that some tag's <netui:textBox tagId="foo" /> Then the following JavaScript function will return the real id attribute rendered in the browser: getNetuiTagName( "foo", this ) To get a <netui:form> element and all of its children elements in JavaScript, use
the same JavaScript function <netui:form tagId="bar" > Then the following JavaScript function will return the <netui:form> element and its children (packaged as an array). document[getNetuiTagName( "bar", this )] To retreive the value entered into a <netui:textBox> within the <netui:form> tag, use the following JavaScript expression. document[getNetuiTagName("bar", this)][getNetuiTagName("foo", this)].value The second parameter ensures that the JavaScript function
begins its search within the correct Portlet scope. Pass the
JavaScript keyword |
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optionsDataSource
attribute to reference a
dynamically generated dropdown list.
<netui:select dataSource="{actionForm.selectedOption}" optionsDataSource="{actionForm.itemOptions}" />
Assume that the optionsDataSource
attribute refers to
a java.util.Map
object.
The Map object will be rendered as a series
of <option> tags. HTML that is similar to the following will be
rendered in the browser:
<select> <option value="633">Aurora Bridge</option> <option value="631">FA-18 fighter jet</option> <option value="635">Space Needle</option> <option value="642">Thin Mints</option> ... </select>
[BEA_HOME]/weblogic81/samples/workshop/SamplesApp/WebApp/tagSamples/select/
[BEA_HOME]/weblogic81/samples/workshop/SamplesApp/WebApp/handlingData/dropdown/