* AutoCompletion.java: correct indentation
This commit is contained in:
teo_sarca
parent
595f062839
commit
80ab81b48c
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@ -6,193 +6,193 @@ import javax.swing.*;
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import javax.swing.text.*;
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// phib: this is from http://www.orbital-computer.de/JComboBox
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// with some minor revisions for Adempiere
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//phib: this is from http://www.orbital-computer.de/JComboBox
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//with some minor revisions for Adempiere
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/* This work is hereby released into the Public Domain.
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* To view a copy of the public domain dedication, visit
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* http://creativecommons.org/licenses/publicdomain/
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*/
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public class AutoCompletion extends PlainDocument {
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VComboBox comboBox;
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ComboBoxModel model;
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JTextComponent editor;
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// flag to indicate if setSelectedItem has been called
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// subsequent calls to remove/insertString should be ignored
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boolean selecting=false;
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boolean hidePopupOnFocusLoss;
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boolean hitBackspace=false;
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boolean hitBackspaceOnSelection;
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KeyListener editorKeyListener;
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FocusListener editorFocusListener;
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public AutoCompletion(final VComboBox comboBox) {
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this.comboBox = comboBox;
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model = comboBox.getModel();
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comboBox.addActionListener(new ActionListener() {
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public void actionPerformed(ActionEvent e) {
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if (!selecting) highlightCompletedText(0);
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}
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});
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comboBox.addPropertyChangeListener(new PropertyChangeListener() {
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public void propertyChange(PropertyChangeEvent e) {
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if (e.getPropertyName().equals("editor")) configureEditor((ComboBoxEditor) e.getNewValue());
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if (e.getPropertyName().equals("model")) model = (ComboBoxModel) e.getNewValue();
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}
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});
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editorKeyListener = new KeyAdapter() {
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public void keyPressed(KeyEvent e) {
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// Ignore keys that do not alter the text - teo_sarca [ 1735043 ]
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if (e.getKeyChar() == KeyEvent.CHAR_UNDEFINED) {
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return;
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}
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if (comboBox.isDisplayable()) comboBox.setPopupVisible(true);
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hitBackspace=false;
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switch (e.getKeyCode()) {
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// determine if the pressed key is backspace (needed by the remove method)
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case KeyEvent.VK_BACK_SPACE : hitBackspace=true;
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hitBackspaceOnSelection=editor.getSelectionStart()!=editor.getSelectionEnd();
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break;
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// ignore delete key
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case KeyEvent.VK_DELETE : e.consume();
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UIManager.getLookAndFeel().provideErrorFeedback(comboBox);
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break;
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}
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}
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};
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// Bug 5100422 on Java 1.5: Editable JComboBox won't hide popup when tabbing out
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hidePopupOnFocusLoss=System.getProperty("java.version").startsWith("1.5");
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// Highlight whole text when gaining focus
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editorFocusListener = new FocusAdapter() {
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public void focusGained(FocusEvent e) {
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highlightCompletedText(0);
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}
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public void focusLost(FocusEvent e) {
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// Workaround for Bug 5100422 - Hide Popup on focus loss
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if (hidePopupOnFocusLoss) comboBox.setPopupVisible(false);
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}
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};
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configureEditor(comboBox.getEditor());
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// Handle initially selected object
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Object selected = comboBox.getSelectedItem();
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if (selected!=null) setText(selected.toString());
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highlightCompletedText(0);
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}
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public static void enable(VComboBox comboBox) {
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// has to be editable
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comboBox.setEditable(true);
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// change the editor's document
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new AutoCompletion(comboBox);
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}
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void configureEditor(ComboBoxEditor newEditor) {
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if (editor != null) {
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editor.removeKeyListener(editorKeyListener);
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editor.removeFocusListener(editorFocusListener);
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}
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if (newEditor != null) {
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editor = (JTextComponent) newEditor.getEditorComponent();
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editor.addKeyListener(editorKeyListener);
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editor.addFocusListener(editorFocusListener);
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editor.setDocument(this);
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}
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}
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public void remove(int offs, int len) throws BadLocationException {
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// return immediately when selecting an item
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if (selecting) return;
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if (hitBackspace) {
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// user hit backspace => move the selection backwards
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// old item keeps being selected
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if (offs>0) {
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if (hitBackspaceOnSelection) offs--;
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} else {
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// User hit backspace with the cursor positioned on the start => beep
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UIManager.getLookAndFeel().provideErrorFeedback(comboBox);
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}
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highlightCompletedText(offs);
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} else {
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super.remove(offs, len);
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}
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}
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public void insertString(int offs, String str, AttributeSet a) throws BadLocationException {
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if (selecting) return;
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super.insertString(offs, str, a);
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// lookup and select a matching item
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Object item = lookupItem(getText(0, getLength()));
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if (item != null) {
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setSelectedItem(item);
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} else {
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if ( offs == 0 )
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setSelectedItem(null); //null is valid for non-mandatory fields
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//so if cursor is at start of line allow it
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// otherwise keep old item selected if there is no better match
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else
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item = comboBox.getSelectedItem();
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// undo the insertion as there isn't a valid match
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offs = offs-str.length();
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UIManager.getLookAndFeel().provideErrorFeedback(comboBox);
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}
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if (item != null)
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setText(item.toString());
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else setText("");
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// select the completed part so it can be overwritten easily
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highlightCompletedText(offs+str.length());
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}
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private void setText(String text) {
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try {
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// remove all text and insert the completed string
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super.remove(0, getLength());
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super.insertString(0, text, null);
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} catch (BadLocationException e) {
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throw new RuntimeException(e.toString());
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}
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}
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private void highlightCompletedText(int start) {
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editor.setCaretPosition(getLength());
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editor.moveCaretPosition(start);
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}
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private void setSelectedItem(Object item) {
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selecting = true;
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model.setSelectedItem(item);
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selecting = false;
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}
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private Object lookupItem(String pattern) {
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Object selectedItem = model.getSelectedItem();
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// only search for a different item if the currently selected does not match
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if (selectedItem != null && startsWithIgnoreCase(selectedItem.toString(), pattern)) {
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return selectedItem;
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} else {
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// iterate over all items
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for (int i=0, n=model.getSize(); i < n; i++) {
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Object currentItem = model.getElementAt(i);
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// current item starts with the pattern?
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if (currentItem != null && startsWithIgnoreCase(currentItem.toString(), pattern)) {
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return currentItem;
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}
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}
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}
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return null;
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}
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// checks if str1 starts with str2 - ignores case
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private boolean startsWithIgnoreCase(String str1, String str2) {
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return str1.toUpperCase().startsWith(str2.toUpperCase());
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}
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VComboBox comboBox;
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ComboBoxModel model;
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JTextComponent editor;
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// flag to indicate if setSelectedItem has been called
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// subsequent calls to remove/insertString should be ignored
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boolean selecting=false;
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boolean hidePopupOnFocusLoss;
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boolean hitBackspace=false;
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boolean hitBackspaceOnSelection;
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KeyListener editorKeyListener;
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FocusListener editorFocusListener;
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public AutoCompletion(final VComboBox comboBox) {
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this.comboBox = comboBox;
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model = comboBox.getModel();
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comboBox.addActionListener(new ActionListener() {
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public void actionPerformed(ActionEvent e) {
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if (!selecting) highlightCompletedText(0);
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}
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});
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comboBox.addPropertyChangeListener(new PropertyChangeListener() {
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public void propertyChange(PropertyChangeEvent e) {
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if (e.getPropertyName().equals("editor")) configureEditor((ComboBoxEditor) e.getNewValue());
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if (e.getPropertyName().equals("model")) model = (ComboBoxModel) e.getNewValue();
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}
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});
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editorKeyListener = new KeyAdapter() {
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public void keyPressed(KeyEvent e) {
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// Ignore keys that do not alter the text - teo_sarca [ 1735043 ]
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if (e.getKeyChar() == KeyEvent.CHAR_UNDEFINED) {
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return;
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}
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if (comboBox.isDisplayable()) comboBox.setPopupVisible(true);
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hitBackspace=false;
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switch (e.getKeyCode()) {
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// determine if the pressed key is backspace (needed by the remove method)
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case KeyEvent.VK_BACK_SPACE : hitBackspace=true;
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hitBackspaceOnSelection=editor.getSelectionStart()!=editor.getSelectionEnd();
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break;
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// ignore delete key
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case KeyEvent.VK_DELETE : e.consume();
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UIManager.getLookAndFeel().provideErrorFeedback(comboBox);
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break;
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}
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}
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};
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// Bug 5100422 on Java 1.5: Editable JComboBox won't hide popup when tabbing out
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hidePopupOnFocusLoss=System.getProperty("java.version").startsWith("1.5");
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// Highlight whole text when gaining focus
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editorFocusListener = new FocusAdapter() {
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public void focusGained(FocusEvent e) {
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highlightCompletedText(0);
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}
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public void focusLost(FocusEvent e) {
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// Workaround for Bug 5100422 - Hide Popup on focus loss
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if (hidePopupOnFocusLoss) comboBox.setPopupVisible(false);
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}
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};
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configureEditor(comboBox.getEditor());
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// Handle initially selected object
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Object selected = comboBox.getSelectedItem();
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if (selected!=null) setText(selected.toString());
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highlightCompletedText(0);
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}
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public static void enable(VComboBox comboBox) {
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// has to be editable
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comboBox.setEditable(true);
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// change the editor's document
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new AutoCompletion(comboBox);
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}
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void configureEditor(ComboBoxEditor newEditor) {
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if (editor != null) {
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editor.removeKeyListener(editorKeyListener);
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editor.removeFocusListener(editorFocusListener);
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}
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if (newEditor != null) {
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editor = (JTextComponent) newEditor.getEditorComponent();
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editor.addKeyListener(editorKeyListener);
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editor.addFocusListener(editorFocusListener);
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editor.setDocument(this);
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}
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}
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public void remove(int offs, int len) throws BadLocationException {
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// return immediately when selecting an item
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if (selecting) return;
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if (hitBackspace) {
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// user hit backspace => move the selection backwards
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// old item keeps being selected
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if (offs>0) {
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if (hitBackspaceOnSelection) offs--;
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} else {
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// User hit backspace with the cursor positioned on the start => beep
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UIManager.getLookAndFeel().provideErrorFeedback(comboBox);
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}
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highlightCompletedText(offs);
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} else {
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super.remove(offs, len);
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}
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}
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public void insertString(int offs, String str, AttributeSet a) throws BadLocationException {
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if (selecting) return;
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super.insertString(offs, str, a);
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// lookup and select a matching item
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Object item = lookupItem(getText(0, getLength()));
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if (item != null) {
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setSelectedItem(item);
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} else {
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if ( offs == 0 )
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setSelectedItem(null); //null is valid for non-mandatory fields
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//so if cursor is at start of line allow it
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// otherwise keep old item selected if there is no better match
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else
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item = comboBox.getSelectedItem();
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// undo the insertion as there isn't a valid match
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offs = offs-str.length();
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UIManager.getLookAndFeel().provideErrorFeedback(comboBox);
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}
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if (item != null)
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setText(item.toString());
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else setText("");
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// select the completed part so it can be overwritten easily
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highlightCompletedText(offs+str.length());
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}
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private void setText(String text) {
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try {
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// remove all text and insert the completed string
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super.remove(0, getLength());
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super.insertString(0, text, null);
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} catch (BadLocationException e) {
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throw new RuntimeException(e.toString());
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}
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}
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private void highlightCompletedText(int start) {
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editor.setCaretPosition(getLength());
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editor.moveCaretPosition(start);
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}
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private void setSelectedItem(Object item) {
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selecting = true;
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model.setSelectedItem(item);
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selecting = false;
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}
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private Object lookupItem(String pattern) {
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Object selectedItem = model.getSelectedItem();
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// only search for a different item if the currently selected does not match
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if (selectedItem != null && startsWithIgnoreCase(selectedItem.toString(), pattern)) {
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return selectedItem;
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} else {
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// iterate over all items
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for (int i=0, n=model.getSize(); i < n; i++) {
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Object currentItem = model.getElementAt(i);
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// current item starts with the pattern?
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if (currentItem != null && startsWithIgnoreCase(currentItem.toString(), pattern)) {
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return currentItem;
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}
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}
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}
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return null;
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}
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// checks if str1 starts with str2 - ignores case
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private boolean startsWithIgnoreCase(String str1, String str2) {
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return str1.toUpperCase().startsWith(str2.toUpperCase());
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}
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}
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