svn-gvsig-desktop / trunk / libraries / libUIComponent / src / org / gvsig / gui / beans / simplecombobox / SimpleComboBox.java @ 28501
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package org.gvsig.gui.beans.simplecombobox; |
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import javax.swing.JComboBox; |
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/**
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* <p>Simple ComboBox component to add items with an associated code.
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* Typical usage would be adding Strings items and associated action
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* codes. Example</p>
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* <pre>SimpleComboBox combo = new SimpleComboBox();
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* combo.addItem("Left", TextComponent.ALIGN_LEFT);
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* combo.addItem("Right", TextComponent.ALIGN_RIGHT;
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* combo.addItem("Center", TextComponent.ALIGN_CENTER);
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* combo.addItem("Justify", TextComponent.ALIGN_JUSTIFY);
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* . . .
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* int textAlign = combo.getSelectedCode();
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* textComponent.align(textAlign);
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* </pre>
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* <p>This component provides a basic selection autocompletion when the user
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* presses a key (while the combo has the focus).</p>
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*
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* @author Cesar Martinez Izquierdo <cesar.martinez@iver.es>
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*
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*/
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public class SimpleComboBox extends JComboBox { |
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private static final long serialVersionUID = 5805274299238455334L; |
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public SimpleComboBox() {
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super();
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} |
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/**
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* <p>Invalid method, do not use it. Use
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* {@link #addItem(Object, int)} instead.</p>
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*/
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public void addItem(Object anObject) { |
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throw new RuntimeException("Invalid method: use addItem(Object anObject, int code) instead or regular Swing JComboBox"); |
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} |
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public void addItem(Object anObject, int code) { |
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ComboItem item = new ComboItem(anObject, code);
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super.addItem(item);
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} |
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public Object getItemAt(int index) { |
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ComboItem item = (ComboItem) super.getItemAt(index);
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if (item!=null) { |
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return item.getObject();
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} |
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return null; |
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} |
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public Object getSelectedItem() { |
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ComboItem item = (ComboItem) super.getSelectedItem();
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if (item!=null) { |
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return item.getObject();
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} |
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return null; |
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} |
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public void setSelectedIndex(int anIndex) { |
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int size = dataModel.getSize();
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if ( anIndex == -1 ) { |
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setSelectedItem( null );
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} else if ( anIndex < -1 || anIndex >= size ) { |
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throw new IllegalArgumentException("setSelectedIndex: " + anIndex + " out of bounds"); |
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} else {
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Object item = dataModel.getElementAt(anIndex);
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super.setSelectedItem(item);
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} |
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} |
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public void setSelectedItem(Object anObject) { |
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ComboItem item; |
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for (int i=0; i<getItemCount(); i++) { |
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item = (ComboItem) super.getItemAt(i);
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if (item.getObject().equals(anObject)) {
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super.setSelectedItem(item);
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} |
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} |
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} |
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public void setSelectedCode(int code) { |
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ComboItem item; |
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for (int i=0; i<getItemCount(); i++) { |
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item = (ComboItem) super.getItemAt(i);
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if (item.getCode()==code) {
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super.setSelectedItem(item);
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} |
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} |
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} |
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public Object[] getSelectedObjects() { |
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Object obj = getSelectedItem();
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if (obj!=null) { |
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return new Object[]{obj}; |
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} |
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else {
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return new Object[0]; |
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} |
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} |
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/**
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* Gets the code associated to the selected item
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* @return
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*/
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public int getSelectedCode() { |
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ComboItem item = (ComboItem) super.getSelectedItem();
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if (item!=null) { |
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return item.getCode();
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} |
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return -1; |
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} |
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private class ComboItem { |
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private Object theObject; |
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private int code; |
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public ComboItem(Object object, int code) { |
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this.theObject = object;
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this.code = code;
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} |
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public void setObject(Object theObject) { |
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this.theObject = theObject;
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} |
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public Object getObject() { |
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return theObject;
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} |
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public void setCode(int code) { |
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this.code = code;
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} |
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public int getCode() { |
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return code;
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} |
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public String toString() { |
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return theObject.toString();
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} |
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} |
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} |