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1 files changed, 276 insertions, 0 deletions

diff --git a/libjava/classpath/javax/swing/plaf/metal/MetalToolTipUI.java b/libjava/classpath/javax/swing/plaf/metal/MetalToolTipUI.java
new file mode 100644
index 000000000..742ff2204
--- /dev/null
+++ b/libjava/classpath/javax/swing/plaf/metal/MetalToolTipUI.java
@@ -0,0 +1,276 @@
+/* MetalToolTipUI.java
+   Copyright (C) 2005 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath 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 the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package javax.swing.plaf.metal;
+
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.Font;
+import java.awt.FontMetrics;
+import java.awt.Graphics;
+import java.awt.event.InputEvent;
+import java.awt.event.KeyEvent;
+
+import javax.swing.AbstractButton;
+import javax.swing.JComponent;
+import javax.swing.JMenuItem;
+import javax.swing.JToolTip;
+import javax.swing.KeyStroke;
+import javax.swing.UIManager;
+import javax.swing.border.Border;
+import javax.swing.plaf.ComponentUI;
+import javax.swing.plaf.UIResource;
+import javax.swing.plaf.basic.BasicToolTipUI;
+
+/**
+ * A UI delegate for the {@link JToolTip} component.
+ */
+public class MetalToolTipUI
+  extends BasicToolTipUI
+{
+  /**
+   * The amount of space between the tool tip text and the accelerator
+   * description (if visible).
+   */
+  public static final int padSpaceBetweenStrings = 12;
+
+  /** The shared UI instance. */
+  private static MetalToolTipUI instance;
+
+  /** A flag controlling the visibility of the accelerator (if there is one). */
+  private boolean isAcceleratorHidden;
+
+  /** A string representing the accelerator key for the component. */
+  private String acceleratorString;
+
+  /**
+   * The delimiter for the accelerator string.
+   */
+  private String acceleratorDelimiter;
+
+  /** The font for the accelerator string. */
+  private Font acceleratorFont;
+
+  /** The color for the accelerator string. */
+  private Color acceleratorForeground;
+
+  /** The active border. */
+  private Border activeBorder;
+
+  /** The inactive border. */
+  private Border inactiveBorder;
+
+  /**
+   * Constructs a new instance of <code>MetalToolTipUI</code>.
+   */
+  public MetalToolTipUI()
+  {
+    super();
+    activeBorder = UIManager.getBorder("ToolTip.border");
+    inactiveBorder = UIManager.getBorder("ToolTip.borderInactive");
+    isAcceleratorHidden = UIManager.getBoolean("ToolTip.hideAccelerator");
+    acceleratorFont = UIManager.getFont("MenuItem.acceleratorFont");
+    acceleratorForeground = UIManager.getColor("MenuItem.acceleratorForeground");
+    acceleratorDelimiter = UIManager.getString("MenuItem.acceleratorDelimiter");
+  }
+
+  /**
+   * Returns a shared instance of the <code>MetalToolTipUI</code> class.
+   * Although this UI delegate does maintain state information, there is never
+   * more than one tool tip visible, so it is OK to use a shared instance.
+   *
+   * @param component  the component (a {@link JToolTip}).
+   *
+   * @return A shared instance of the <code>MetalToolTipUI</code> class.
+   */
+  public static ComponentUI createUI(JComponent component)
+  {
+    if (instance == null)
+      instance = new MetalToolTipUI();
+    return instance;
+  }
+
+  /**
+   * Returns a string representing the accelerator key (if there is one) for
+   * the component that the tool tip belongs to.
+   *
+   * @return A string representing the accelerator key.
+   */
+  public String getAcceleratorString()
+  {
+    return acceleratorString;
+  }
+
+  /**
+   * Installs the UI for the specified component (a {@link JToolTip}).
+   *
+   * @param c  the {@link JToolTip} component.
+   */
+  public void installUI(JComponent c)
+  {
+    super.installUI(c);
+    Border existingBorder = c.getBorder();
+    if (existingBorder == null || existingBorder instanceof UIResource)
+      {
+        if (c.isEnabled())
+          c.setBorder(activeBorder);
+        else
+          c.setBorder(inactiveBorder);
+      }
+  }
+
+  /**
+   * Clears the defaults set in {@link #installUI(JComponent)}.
+   *
+   * @param c  the component.
+   */
+  public void uninstallUI(JComponent c)
+  {
+    super.uninstallUI(c);
+    if (c.getBorder() instanceof UIResource)
+      c.setBorder(null);
+  }
+
+  /**
+   * Returns <code>true</code> if the accelerator string is hidden, and
+   * <code>false</code> otherwise.  This setting is controlled by the
+   * <code>ToolTip.hideAccelerator</code> entry in the UI defaults table.
+   *
+   * @return A boolean.
+   */
+  protected boolean isAcceleratorHidden()
+  {
+    return isAcceleratorHidden;
+  }
+
+  /**
+   * Returns the preferred size for the {@link JToolTip} component.
+   *
+   * @param c  the component (a {@link JToolTip}).
+   *
+   * @return The preferred size.
+   */
+  public Dimension getPreferredSize(JComponent c)
+  {
+    Dimension d = super.getPreferredSize(c);
+    String acc = getAcceleratorString();
+    if (acc != null && ! acc.equals(""))
+      {
+        FontMetrics fm = c.getFontMetrics(c.getFont());
+        d.width += fm.stringWidth(acc);
+      }
+    return d;
+  }
+
+  /**
+   * Paints the tool tip.
+   *
+   * @param g  the graphics context.
+   * @param c  the {@link JToolTip} component.
+   */
+  public void paint(Graphics g, JComponent c)
+  {
+    super.paint(g, c);
+    // Somehow paint accelerator. Keep care for possible HTML rendering.
+  }
+
+  /**
+   * Returns a string representing the accelerator for the component, or
+   * <code>null</code> if the component has no accelerator.
+   *
+   * @param c  the component.
+   *
+   * @return A string representing the accelerator (possibly
+   *         <code>null</code>).
+   */
+  private String fetchAcceleratorString(JComponent c)
+  {
+    String result = null;
+    if (c instanceof JToolTip)
+      {
+        JToolTip toolTip = (JToolTip) c;
+        JComponent component = toolTip.getComponent();
+        KeyStroke ks = null;
+        int mne = 0;
+        if (component instanceof JMenuItem)
+          {
+            JMenuItem item = (JMenuItem) component;
+            ks = item.getAccelerator();
+            if (ks == null)
+                mne = item.getMnemonic();
+          }
+        else if (component instanceof AbstractButton)
+          {
+            AbstractButton button = (AbstractButton) component;
+            mne = button.getMnemonic();
+          }
+        if (mne > 0)
+          ks = KeyStroke.getKeyStroke(Character.toUpperCase((char) mne),
+                InputEvent.ALT_MASK, false);
+        if (ks != null)
+          result = acceleratorToString(ks);
+      }
+    return result;
+  }
+
+  /**
+   * Returns a string representing an accelerator.
+   *
+   * @param accelerator  the accelerator (<code>null</code> not permitted).
+   *
+   * @return A string representing an accelerator.
+   */
+  private String acceleratorToString(KeyStroke accelerator)
+  {
+    // convert keystroke into string format
+    String modifiersText = "";
+    int modifiers = accelerator.getModifiers();
+    char keyChar = accelerator.getKeyChar();
+    int keyCode = accelerator.getKeyCode();
+
+    if (modifiers != 0)
+      modifiersText = KeyEvent.getKeyModifiersText(modifiers)
+          + acceleratorDelimiter;
+
+    if (keyCode == KeyEvent.VK_UNDEFINED)
+      return modifiersText + keyChar;
+    else
+      return modifiersText + KeyEvent.getKeyText(keyCode);
+  }
+
+}