Updating Contact List to search for users using ctrl - n

git-svn-id: http://svn.igniterealtime.org/svn/repos/spark/trunk@5493 b35dd754-fafc-0310-a699-88a17e54d16e

src/java/org/jivesoftware/spark/component/JContactItemField.java

@@ -0,0 +1,224 @@
+/**
+ * $Revision$
+ * $Date$
+ *
+ * Copyright (C) 1999-2005 Jive Software. All rights reserved.
+ * This software is the proprietary information of Jive Software. Use is subject to license terms.
+ */
+
+package org.jivesoftware.spark.component;
+
+import org.jivesoftware.resource.SparkRes;
+import org.jivesoftware.spark.ui.ContactItem;
+import org.jivesoftware.spark.util.ModelUtil;
+
+import java.awt.BorderLayout;
+import java.awt.Component;
+import java.awt.Point;
+import java.awt.event.KeyAdapter;
+import java.awt.event.KeyEvent;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.swing.DefaultListModel;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JList;
+import javax.swing.JPanel;
+import javax.swing.JScrollPane;
+import javax.swing.JTextField;
+import javax.swing.JWindow;
+import javax.swing.ListCellRenderer;
+
+/**
+ * Implementation of a popup field from a TextField.
+ *
+ * @author Derek DeMoro
+ */
+public class JContactItemField extends JPanel {
+
+    private JTextField textField = new JTextField();
+    private DefaultListModel model = new DefaultListModel();
+    private JList list = new JList(model);
+    private JWindow popup;
+    private List<ContactItem> items;
+
+    public JContactItemField(List items) {
+        setLayout(new BorderLayout());
+        this.items = items;
+
+        add(textField, BorderLayout.CENTER);
+
+
+        textField.addKeyListener(new KeyAdapter() {
+            public void keyReleased(KeyEvent keyEvent) {
+                char ch = keyEvent.getKeyChar();
+                if (validateChar(ch)) {
+                    showPopupMenu();
+                }
+
+                if (ch == KeyEvent.VK_ENTER) {
+                    int index = list.getSelectedIndex();
+                    if (index >= 0) {
+                        ContactItem selection = (ContactItem)list.getSelectedValue();
+                        textField.setText(selection.getNickname());
+                        popup.setVisible(false);
+                    }
+                }
+
+                if (ch == KeyEvent.VK_ESCAPE) {
+                    popup.setVisible(false);
+                }
+                dispatchEvent(keyEvent);
+            }
+
+            public void keyPressed(KeyEvent e) {
+                if (isArrowKey(e)) {
+                    list.dispatchEvent(e);
+                }
+
+            }
+        });
+
+
+        popup = new JWindow(new JFrame());
+
+
+        popup.getContentPane().add(new JScrollPane(list));
+
+        list.setCellRenderer(new PopupRenderer());
+    }
+
+    public void setItems(List list) {
+        this.items = items;
+    }
+
+    private void showPopupMenu() {
+        model.removeAllElements();
+
+        String typedItem = textField.getText();
+
+        final List<ContactItem> validItems = new ArrayList<ContactItem>();
+        for (ContactItem contactItem : items) {
+            if (contactItem.getNickname().startsWith(typedItem)) {
+                validItems.add(contactItem);
+            }
+        }
+
+
+        if (validItems.size() > 0) {
+            for (final ContactItem label : validItems) {
+                model.addElement(label);
+            }
+        }
+
+        if (validItems.size() != 0 && !popup.isVisible()) {
+            popup.pack();
+            popup.setSize(textField.getWidth(), 200);
+            Point pt = textField.getLocationOnScreen();
+            pt.translate(0, textField.getHeight());
+            popup.setLocation(pt);
+            popup.toFront();
+            popup.setVisible(true);
+        }
+    }
+
+    /**
+     * Validate the given text - to pass it must contain letters, digits, '@', '-', '_', '.', ','
+     * or a space character.
+     *
+     * @param text the text to check
+     * @return true if the given text is valid, false otherwise.
+     */
+    public boolean validateChars(String text) {
+        if (!ModelUtil.hasLength(text)) {
+            return false;
+        }
+
+        for (int i = 0; i < text.length(); i++) {
+            char ch = text.charAt(i);
+            if (!Character.isLetterOrDigit(ch) && ch != '@' && ch != '-' && ch != '_'
+                && ch != '.' && ch != ',' && ch != ' ') {
+                return false;
+            }
+        }
+
+
+        return true;
+    }
+
+    /**
+     * Validate the given text - to pass it must contain letters, digits, '@', '-', '_', '.', ','
+     * or a space character.
+     *
+     * @param ch the character
+     * @return true if the given text is valid, false otherwise.
+     */
+    public boolean validateChar(char ch) {
+        if (!Character.isLetterOrDigit(ch) && ch != '@' && ch != '-' && ch != '_'
+            && ch != '.' && ch != ',' && ch != ' ' && ch != KeyEvent.VK_BACK_SPACE && ch != KeyEvent.CTRL_DOWN_MASK
+            && ch != KeyEvent.CTRL_MASK) {
+            return false;
+        }
+
+        return true;
+    }
+
+    public boolean isArrowKey(KeyEvent e) {
+        if (e.getKeyCode() == KeyEvent.VK_UP || e.getKeyCode() == KeyEvent.VK_DOWN) {
+            return true;
+        }
+        return false;
+    }
+
+    public String getText() {
+        return textField.getText();
+    }
+
+    public void setText(String text) {
+        textField.setText(text);
+    }
+
+    class PopupRenderer extends JLabel implements ListCellRenderer {
+
+        /**
+         * Construct Default JLabelIconRenderer.
+         */
+        public PopupRenderer() {
+            setOpaque(true);
+            this.setHorizontalTextPosition(JLabel.RIGHT);
+            this.setHorizontalAlignment(JLabel.LEFT);
+        }
+
+        public Component getListCellRendererComponent(JList list,
+                                                      Object value,
+                                                      int index,
+                                                      boolean isSelected,
+                                                      boolean cellHasFocus) {
+            if (isSelected) {
+                setBackground(list.getSelectionBackground());
+                setForeground(list.getSelectionForeground());
+            }
+            else {
+                setBackground(list.getBackground());
+                setForeground(list.getForeground());
+            }
+
+
+            ContactItem contactItem = (ContactItem)value;
+            setText(contactItem.getNickname());
+            if (contactItem.getIcon() == null) {
+                setIcon(SparkRes.getImageIcon(SparkRes.CLEAR_BALL_ICON));
+            }
+            else {
+                setIcon(contactItem.getIcon());
+            }
+            setFont(contactItem.getNicknameLabel().getFont());
+            setForeground(contactItem.getForeground());
+
+            return this;
+        }
+    }
+
+
+}