htmlselectelement.java

java1.6众多例子参考

/*
 * Copyright (c) 2000 World Wide Web Consortium,
 * (Massachusetts Institute of Technology, Institut National de
 * Recherche en Informatique et en Automatique, Keio University). All
 * Rights Reserved. This program is distributed under the W3C's Software
 * Intellectual Property License. This program is distributed in the
 * hope that it will be useful, but WITHOUT ANY WARRANTY; without even
 * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE. See W3C License http://www.w3.org/Consortium/Legal/ for more
 * details.
 */

package org.w3c.dom.html;

import org.w3c.dom.DOMException;

/**
 *  The select element allows the selection of an option. The contained 
 * options can be directly accessed through the select element as a 
 * collection. See the  SELECT element definition in HTML 4.0.
 * <p>See also the <a href='http://www.w3.org/TR/2000/CR-DOM-Level-2-20000510'>Document Object Model (DOM) Level 2 Specification</a>.
 */
public interface HTMLSelectElement extends HTMLElement {
    /**
     *  The type of this form control. This is the string "select-multiple" 
     * when the multiple attribute is <code>true</code> and the string 
     * "select-one" when <code>false</code> .
     */
    public String getType();

    /**
     *  The ordinal index of the selected option, starting from 0. The value 
     * -1 is returned if no element is selected. If multiple options are 
     * selected, the index of the first selected option is returned. 
     */
    public int getSelectedIndex();
    public void setSelectedIndex(int selectedIndex);

    /**
     *  The current form control value. 
     */
    public String getValue();
    public void setValue(String value);

    /**
     *  The number of options in this <code>SELECT</code> . 
     */
    public int getLength();

    /**
     *  Returns the <code>FORM</code> element containing this control. Returns 
     * <code>null</code> if this control is not within the context of a form. 
     */
    public HTMLFormElement getForm();

    /**
     *  The collection of <code>OPTION</code> elements contained by this 
     * element. 
     */
    public HTMLCollection getOptions();

    /**
     *  The control is unavailable in this context. See the  disabled 
     * attribute definition in HTML 4.0.
     */
    public boolean getDisabled();
    public void setDisabled(boolean disabled);

    /**
     *  If true, multiple <code>OPTION</code> elements may  be selected in 
     * this <code>SELECT</code> . See the  multiple attribute definition in 
     * HTML 4.0.
     */
    public boolean getMultiple();
    public void setMultiple(boolean multiple);

    /**
     *  Form control or object name when submitted with a form. See the  name 
     * attribute definition in HTML 4.0.
     */
    public String getName();
    public void setName(String name);

    /**
     *  Number of visible rows. See the  size attribute definition in HTML 4.0.
     */
    public int getSize();
    public void setSize(int size);

    /**
     *  Index that represents the element's position in the tabbing order. See 
     * the  tabindex attribute definition in HTML 4.0.
     */
    public int getTabIndex();
    public void setTabIndex(int tabIndex);

    /**
     *  Add a new element to the collection of <code>OPTION</code> elements 
     * for this <code>SELECT</code> . This method is the equivalent of the 
     * <code>appendChild</code> method of the <code>Node</code> interface if 
     * the <code>before</code> parameter is <code>null</code> . It is 
     * equivalent to the <code>insertBefore</code> method on the parent of 
     * <code>before</code> in all other cases.
     * @param element  The element to add.
     * @param before  The element to insert before, or <code>null</code> for 
     *   the tail of the list.
     * @exception DOMException
     *    NOT_FOUND_ERR: Raised if <code>before</code> is not a descendant of 
     *   the <code>SELECT</code> element. 
     */
    public void add(HTMLElement element, 
                    HTMLElement before)
                    throws DOMException;

    /**
     *  Remove an element from the collection of <code>OPTION</code> elements 
     * for this <code>SELECT</code> . Does nothing if no element has the given
     *  index.
     * @param index  The index of the item to remove, starting from 0.
     */
    public void remove(int index);

    /**
     *  Removes keyboard focus from this element.
     */
    public void blur();

    /**
     *  Gives keyboard focus to this element.
     */
    public void focus();

}