svn-gvsig-desktop / tags / v1_0_RELEASE / libraries / libUI / src / org / gvsig / gui / beans / controls / comboscale / ComboScale.java @ 9167
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package org.gvsig.gui.beans.controls.comboscale; |
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import java.awt.event.ActionEvent; |
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import java.awt.event.ActionListener; |
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import java.text.NumberFormat; |
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import java.util.ArrayList; |
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import java.util.Iterator; |
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import javax.swing.DefaultComboBoxModel; |
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import javax.swing.JComboBox; |
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import javax.swing.JLabel; |
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import javax.swing.JPanel; |
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import org.gvsig.gui.beans.controls.IControl; |
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import java.awt.FlowLayout; |
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public class ComboScale extends JPanel implements IControl { |
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private JLabel jLabel = null; |
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private JComboBox jComboBox = null; |
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private ArrayList actionCommandListeners = new ArrayList(); |
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// private Long[] scales;
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private boolean bDoCallListeners = true; |
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private boolean isScaleCombo; |
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static private int eventId = Integer.MIN_VALUE; |
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// jaume
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private class ComboScaleItem { |
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private long value; |
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public ComboScaleItem(long itemScale) { |
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this.value = itemScale;
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} |
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public String toString() { |
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return NumberFormat.getNumberInstance().format(value); |
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} |
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public boolean equals(Object obj) { |
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return obj instanceof ComboScaleItem && ((ComboScaleItem) obj).getValue() == value; |
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} |
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public long getValue() { |
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return value;
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} |
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} |
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/**
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* This is the default constructor
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*/
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public ComboScale() {
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super();
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initialize(); |
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} |
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/**
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* This method initializes this
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*
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* @return void
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*/
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private void initialize() { |
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FlowLayout flowLayout = new FlowLayout(); |
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flowLayout.setHgap(0);
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flowLayout.setVgap(0);
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jLabel = new JLabel(); |
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jLabel.setText("1:");
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this.setLayout(flowLayout);
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this.setSize(155, 16); |
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//this.setBorder(javax.swing.BorderFactory.createLineBorder(
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this.add(jLabel, null); |
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this.add(getJComboBox(), null); |
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//java.awt.Color.gray, 1));
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} |
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/**
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* This method initializes jComboBox
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*
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* @return javax.swing.JComboBox
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*/
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private JComboBox getJComboBox() { |
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if (jComboBox == null) { |
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jComboBox = new JComboBox(); |
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jComboBox.setPreferredSize(new java.awt.Dimension(130, 16)); |
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jComboBox.setEditable(true);
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jComboBox.setMaximumRowCount(5);
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jComboBox.setFont(new java.awt.Font("Dialog", java.awt.Font.BOLD, |
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10));
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jComboBox.setBackground(java.awt.SystemColor.window); |
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jComboBox |
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.setComponentOrientation(java.awt.ComponentOrientation.LEFT_TO_RIGHT); |
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jComboBox.addActionListener(new java.awt.event.ActionListener() {
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public void actionPerformed(java.awt.event.ActionEvent e) { |
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if (e.getActionCommand().equals("comboBoxChanged")) { |
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// callActionCommandListeners(((Long)jComboBox.getSelectedItem()).longValue());
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// setScale(((Long)jComboBox.getSelectedItem()).longValue());
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Object item = jComboBox.getSelectedItem();
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long scale;
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if (item instanceof String) { |
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StringBuffer sb = new StringBuffer((String) item); |
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// remove any point in the number
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final String digits = "0123456789"; |
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int i = sb.charAt(0) == '-' ? 1 : 0; |
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while (i < sb.length()-1) { |
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if (digits.indexOf(sb.charAt(i))==-1) |
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sb.deleteCharAt(i); |
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i++; |
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} |
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jComboBox.removeItem(item); |
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scale = Long.parseLong(sb.toString());
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} else {
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scale = ((ComboScaleItem) jComboBox.getSelectedItem()) |
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.getValue(); |
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} |
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insertScaleIfNotPresent(scale); |
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callActionCommandListeners(scale); |
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} |
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} |
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}); |
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} |
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return jComboBox;
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} |
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public void setItems(long[] items) { |
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ComboScaleItem[] scales = new ComboScaleItem[items.length]; |
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for (int i = 0; i < items.length; i++) { |
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scales[i] = new ComboScaleItem(items[i]);
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} |
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DefaultComboBoxModel newModel = new DefaultComboBoxModel(scales); |
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getJComboBox().setModel(newModel); |
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} |
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/**
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* This funcion ONLY sets the text in combo. It will NOT call listeners.
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*
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* @param scale
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*/
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public void setScale(long item) { |
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bDoCallListeners = false;
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getJComboBox().setSelectedItem(new ComboScaleItem(item));
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bDoCallListeners = true;
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} |
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/**
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* @param scale
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*/
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private void insertScaleIfNotPresent(long scale) { |
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// Si viene de un setScale, no insertamos la escala en el combo
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if (!bDoCallListeners)
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return;
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DefaultComboBoxModel model = (DefaultComboBoxModel) jComboBox |
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.getModel(); |
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// model=new DefaultComboBoxModel();
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boolean inserted = false; |
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for (int i = 0; i < model.getSize(); i++) { |
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ComboScaleItem itemScale = (ComboScaleItem) model.getElementAt(i); |
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if (scale == itemScale.getValue()) {
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inserted = true;
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break;
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} |
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} |
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if (!inserted) {
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for (int i = 0; i < model.getSize(); i++) { |
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ComboScaleItem itemScale = (ComboScaleItem) model.getElementAt(i); |
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if (scale < itemScale.getValue()) {
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model.insertElementAt(new ComboScaleItem(scale), i);
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inserted = true;
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break;
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} |
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} |
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if (!inserted)
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model.addElement(new ComboScaleItem(scale));
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} |
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jComboBox.setSelectedItem(new ComboScaleItem(scale));
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isScaleCombo=true;
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} |
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private void callActionCommandListeners(long scale) { |
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if (!bDoCallListeners)
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return;
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Iterator acIterator = actionCommandListeners.iterator();
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while (acIterator.hasNext()) {
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ActionListener listener = (ActionListener) acIterator.next(); |
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listener.actionPerformed(new ActionEvent(this, eventId, |
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"CHANGE_SCALE_" + scale));
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} |
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eventId++; |
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} |
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public void addActionListener(ActionListener listener) { |
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if (!actionCommandListeners.contains(listener))
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actionCommandListeners.add(listener); |
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} |
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public void removeActionListener(ActionListener listener) { |
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actionCommandListeners.remove(listener); |
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} |
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/**
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* Returns the current selected item.
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*
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* @return The value of the selected scale, or -1 if there was an invalid
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* value (ie. not long value).
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*/
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public long getScale() { |
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return ((ComboScaleItem) jComboBox.getSelectedItem()).getValue();
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} |
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/**
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* Sets the label to be displayed on the left of the combo
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*/
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public void setLabel(String label) { |
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jLabel.setText(label); |
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} |
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/**
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* Gets the label
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*/
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public String getLabel() { |
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return jLabel.getText();
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} |
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public Object setValue(Object value) { |
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if (isScaleCombo) {
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isScaleCombo=false;
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return null; |
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} |
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try {
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long scale = Long.parseLong((String)value); |
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if (scale < 0) |
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return null; |
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ComboScaleItem item = new ComboScaleItem(scale);
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if (item.equals(jComboBox.getSelectedItem()))
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return item;
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this.setScale(scale);
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return item;
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} catch (NumberFormatException ex) { |
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// don't change the status if the provided value was not valid
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return null; |
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} |
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} |
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} // @jve:decl-index=0:visual-constraint="10,10"
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