diff options
Diffstat (limited to 'libjava/classpath/javax/swing/plaf/basic/BasicTextUI.java')
| -rw-r--r-- | libjava/classpath/javax/swing/plaf/basic/BasicTextUI.java | 538 |
1 files changed, 366 insertions, 172 deletions
diff --git a/libjava/classpath/javax/swing/plaf/basic/BasicTextUI.java b/libjava/classpath/javax/swing/plaf/basic/BasicTextUI.java index 8e9c8c949f3..e152a3034d5 100644 --- a/libjava/classpath/javax/swing/plaf/basic/BasicTextUI.java +++ b/libjava/classpath/javax/swing/plaf/basic/BasicTextUI.java @@ -38,6 +38,8 @@ exception statement from your version. */ package javax.swing.plaf.basic; +import gnu.classpath.SystemProperties; + import java.awt.Color; import java.awt.Container; import java.awt.Dimension; @@ -71,6 +73,7 @@ import javax.swing.plaf.InputMapUIResource; import javax.swing.plaf.TextUI; import javax.swing.plaf.UIResource; import javax.swing.text.AbstractDocument; +import javax.swing.text.AttributeSet; import javax.swing.text.BadLocationException; import javax.swing.text.Caret; import javax.swing.text.DefaultCaret; @@ -120,6 +123,140 @@ public abstract class BasicTextUI extends TextUI } } + private static class FocusHandler + implements FocusListener + { + public void focusGained(FocusEvent e) + { + // Nothing to do here. + } + public void focusLost(FocusEvent e) + { + JTextComponent textComponent = (JTextComponent) e.getComponent(); + // Integrates Swing text components with the system clipboard: + // The idea is that if one wants to copy text around X11-style + // (select text and middle-click in the target component) the focus + // will move to the new component which gives the old focus owner the + // possibility to paste its selection into the clipboard. + if (!e.isTemporary() + && textComponent.getSelectionStart() + != textComponent.getSelectionEnd()) + { + SecurityManager sm = System.getSecurityManager(); + try + { + if (sm != null) + sm.checkSystemClipboardAccess(); + + Clipboard cb = Toolkit.getDefaultToolkit().getSystemSelection(); + if (cb != null) + { + StringSelection selection = new StringSelection( + textComponent.getSelectedText()); + cb.setContents(selection, selection); + } + } + catch (SecurityException se) + { + // Not allowed to access the clipboard: Ignore and + // do not access it. + } + catch (HeadlessException he) + { + // There is no AWT: Ignore and do not access the + // clipboard. + } + catch (IllegalStateException ise) + { + // Clipboard is currently unavaible. + } + } + } + } + + /** + * This FocusListener triggers repaints on focus shift. + */ + private static FocusListener focusListener; + + /** + * Receives notifications when properties of the text component change. + */ + private class Handler + implements PropertyChangeListener, DocumentListener + { + /** + * Notifies when a property of the text component changes. + * + * @param event the PropertyChangeEvent describing the change + */ + public void propertyChange(PropertyChangeEvent event) + { + if (event.getPropertyName().equals("document")) + { + // Document changed. + Object oldValue = event.getOldValue(); + if (oldValue != null) + { + Document oldDoc = (Document) oldValue; + oldDoc.removeDocumentListener(handler); + } + Object newValue = event.getNewValue(); + if (newValue != null) + { + Document newDoc = (Document) newValue; + newDoc.addDocumentListener(handler); + } + modelChanged(); + } + + BasicTextUI.this.propertyChange(event); + } + + /** + * Notification about a document change event. + * + * @param ev the DocumentEvent describing the change + */ + public void changedUpdate(DocumentEvent ev) + { + // Updates are forwarded to the View even if 'getVisibleEditorRect' + // method returns null. This means the View classes have to be + // aware of that possibility. + rootView.changedUpdate(ev, getVisibleEditorRect(), + rootView.getViewFactory()); + } + + /** + * Notification about a document insert event. + * + * @param ev the DocumentEvent describing the insertion + */ + public void insertUpdate(DocumentEvent ev) + { + // Updates are forwarded to the View even if 'getVisibleEditorRect' + // method returns null. This means the View classes have to be + // aware of that possibility. + rootView.insertUpdate(ev, getVisibleEditorRect(), + rootView.getViewFactory()); + } + + /** + * Notification about a document removal event. + * + * @param ev the DocumentEvent describing the removal + */ + public void removeUpdate(DocumentEvent ev) + { + // Updates are forwarded to the View even if 'getVisibleEditorRect' + // method returns null. This means the View classes have to be + // aware of that possibility. + rootView.removeUpdate(ev, getVisibleEditorRect(), + rootView.getViewFactory()); + } + + } + /** * This view forms the root of the View hierarchy. However, it delegates * most calls to another View which is the real root of the hierarchy. @@ -226,19 +363,14 @@ public abstract class BasicTextUI extends TextUI } /** - * Returns the preferred span along the specified <code>axis</code>. - * This is delegated to the real root view. - * - * @param axis the axis for which the preferred span is queried - * - * @return the preferred span along the axis + * Sets the size of the renderer. This is synchronized because that + * potentially triggers layout and we don't want more than one thread + * playing with the layout information. */ - public float getPreferredSpan(int axis) + public synchronized void setSize(float w, float h) { if (view != null) - return view.getPreferredSpan(axis); - - return Integer.MAX_VALUE; + view.setSize(w, h); } /** @@ -251,8 +383,8 @@ public abstract class BasicTextUI extends TextUI { if (view != null) { - Rectangle b = s.getBounds(); - view.setSize(b.width, b.height); + Rectangle b = s instanceof Rectangle ? (Rectangle) s : s.getBounds(); + setSize(b.width, b.height); view.paint(g, s); } } @@ -312,7 +444,8 @@ public abstract class BasicTextUI extends TextUI */ public void insertUpdate(DocumentEvent ev, Shape shape, ViewFactory vf) { - view.insertUpdate(ev, shape, vf); + if (view != null) + view.insertUpdate(ev, shape, vf); } /** @@ -325,7 +458,8 @@ public abstract class BasicTextUI extends TextUI */ public void removeUpdate(DocumentEvent ev, Shape shape, ViewFactory vf) { - view.removeUpdate(ev, shape, vf); + if (view != null) + view.removeUpdate(ev, shape, vf); } /** @@ -338,7 +472,8 @@ public abstract class BasicTextUI extends TextUI */ public void changedUpdate(DocumentEvent ev, Shape shape, ViewFactory vf) { - view.changedUpdate(ev, shape, vf); + if (view != null) + view.changedUpdate(ev, shape, vf); } /** @@ -400,116 +535,73 @@ public abstract class BasicTextUI extends TextUI { return textComponent.getDocument(); } - } - /** - * Receives notifications when properties of the text component change. - */ - private class PropertyChangeHandler implements PropertyChangeListener - { /** - * Notifies when a property of the text component changes. - * - * @param event the PropertyChangeEvent describing the change + * Returns the attributes, which is null for the RootView. */ - public void propertyChange(PropertyChangeEvent event) + public AttributeSet getAttributes() { - if (event.getPropertyName().equals("document")) - { - // Document changed. - Object oldValue = event.getOldValue(); - if (oldValue != null) - { - Document oldDoc = (Document) oldValue; - oldDoc.removeDocumentListener(documentHandler); - } - Object newValue = event.getNewValue(); - if (newValue != null) - { - Document newDoc = (Document) newValue; - newDoc.addDocumentListener(documentHandler); - } - modelChanged(); - } - - BasicTextUI.this.propertyChange(event); + return null; } - } - /** - * Listens for changes on the underlying model and forwards notifications - * to the View. This also updates the caret position of the text component. - * - * TODO: Maybe this should somehow be handled through EditorKits - */ - class DocumentHandler implements DocumentListener - { /** - * Notification about a document change event. - * - * @param ev the DocumentEvent describing the change + * Overridden to forward to the view. */ - public void changedUpdate(DocumentEvent ev) + public float getPreferredSpan(int axis) { - // Updates are forwarded to the View even if 'getVisibleEditorRect' - // method returns null. This means the View classes have to be - // aware of that possibility. - rootView.changedUpdate(ev, getVisibleEditorRect(), - rootView.getViewFactory()); + // The RI returns 10 in the degenerate case. + float span = 10; + if (view != null) + span = view.getPreferredSpan(axis); + return span; } /** - * Notification about a document insert event. - * - * @param ev the DocumentEvent describing the insertion + * Overridden to forward to the real view. */ - public void insertUpdate(DocumentEvent ev) + public float getMinimumSpan(int axis) { - // Updates are forwarded to the View even if 'getVisibleEditorRect' - // method returns null. This means the View classes have to be - // aware of that possibility. - rootView.insertUpdate(ev, getVisibleEditorRect(), - rootView.getViewFactory()); + // The RI returns 10 in the degenerate case. + float span = 10; + if (view != null) + span = view.getMinimumSpan(axis); + return span; } /** - * Notification about a document removal event. - * - * @param ev the DocumentEvent describing the removal + * Overridden to return Integer.MAX_VALUE. */ - public void removeUpdate(DocumentEvent ev) + public float getMaximumSpan(int axis) { - // Updates are forwarded to the View even if 'getVisibleEditorRect' - // method returns null. This means the View classes have to be - // aware of that possibility. - rootView.removeUpdate(ev, getVisibleEditorRect(), - rootView.getViewFactory()); + // The RI returns Integer.MAX_VALUE here, regardless of the real view's + // maximum size. + return Integer.MAX_VALUE; } } /** * The EditorKit used by this TextUI. */ - // FIXME: should probably be non-static. - static EditorKit kit = new DefaultEditorKit(); + private static EditorKit kit; /** - * The root view. + * The combined event handler for text components. + * + * This is package private to avoid accessor methods. */ - RootView rootView = new RootView(); + Handler handler; /** - * The text component that we handle. + * The root view. + * + * This is package private to avoid accessor methods. */ - JTextComponent textComponent; + RootView rootView; /** - * Receives notification when the model changes. + * The text component that we handle. */ - private PropertyChangeHandler updateHandler = new PropertyChangeHandler(); - - /** The DocumentEvent handler. */ - DocumentHandler documentHandler = new DocumentHandler(); + JTextComponent textComponent; /** * Creates a new <code>BasicTextUI</code> instance. @@ -558,17 +650,31 @@ public abstract class BasicTextUI extends TextUI public void installUI(final JComponent c) { textComponent = (JTextComponent) c; + + if (rootView == null) + rootView = new RootView(); + installDefaults(); - textComponent.addPropertyChangeListener(updateHandler); + installFixedDefaults(); + + // These listeners must be installed outside of installListeners(), + // because overriding installListeners() doesn't prevent installing + // these in the RI, but overriding isntallUI() does. + if (handler == null) + handler = new Handler(); + textComponent.addPropertyChangeListener(handler); Document doc = textComponent.getDocument(); if (doc == null) { + // The Handler takes care of installing the necessary listeners + // on the document here. doc = getEditorKit(textComponent).createDefaultDocument(); textComponent.setDocument(doc); } else { - doc.addDocumentListener(documentHandler); + // Must install the document listener. + doc.addDocumentListener(handler); modelChanged(); } @@ -586,7 +692,6 @@ public abstract class BasicTextUI extends TextUI LookAndFeel.installColorsAndFont(textComponent, prefix + ".background", prefix + ".foreground", prefix + ".font"); LookAndFeel.installBorder(textComponent, prefix + ".border"); - textComponent.setMargin(UIManager.getInsets(prefix + ".margin")); // Some additional text component only properties. Color color = textComponent.getCaretColor(); @@ -600,7 +705,7 @@ public abstract class BasicTextUI extends TextUI color = textComponent.getDisabledTextColor(); if (color == null || color instanceof UIResource) { - color = UIManager.getColor(prefix + ".inactiveBackground"); + color = UIManager.getColor(prefix + ".inactiveForeground"); textComponent.setDisabledTextColor(color); } color = textComponent.getSelectedTextColor(); @@ -623,6 +728,15 @@ public abstract class BasicTextUI extends TextUI textComponent.setMargin(margin); } + } + + /** + * Installs defaults that can't be overridden by overriding + * installDefaults(). + */ + private void installFixedDefaults() + { + String prefix = getPropertyPrefix(); Caret caret = textComponent.getCaret(); if (caret == null || caret instanceof UIResource) { @@ -638,64 +752,18 @@ public abstract class BasicTextUI extends TextUI } /** - * This FocusListener triggers repaints on focus shift. - */ - private FocusListener focuslistener = new FocusListener() { - public void focusGained(FocusEvent e) - { - textComponent.repaint(); - } - public void focusLost(FocusEvent e) - { - textComponent.repaint(); - - // Integrates Swing text components with the system clipboard: - // The idea is that if one wants to copy text around X11-style - // (select text and middle-click in the target component) the focus - // will move to the new component which gives the old focus owner the - // possibility to paste its selection into the clipboard. - if (!e.isTemporary() - && textComponent.getSelectionStart() - != textComponent.getSelectionEnd()) - { - SecurityManager sm = System.getSecurityManager(); - try - { - if (sm != null) - sm.checkSystemClipboardAccess(); - - Clipboard cb = Toolkit.getDefaultToolkit().getSystemSelection(); - if (cb != null) - { - StringSelection selection = new StringSelection( - textComponent.getSelectedText()); - cb.setContents(selection, selection); - } - } - catch (SecurityException se) - { - // Not allowed to access the clipboard: Ignore and - // do not access it. - } - catch (HeadlessException he) - { - // There is no AWT: Ignore and do not access the - // clipboard. - } - catch (IllegalStateException ise) - { - // Clipboard is currently unavaible. - } - } - } - }; - - /** * Install all listeners on the text component. */ protected void installListeners() { - textComponent.addFocusListener(focuslistener); + // + if (SystemProperties.getProperty("gnu.swing.text.no-xlike-clipboard") + == null) + { + if (focusListener == null) + focusListener = new FocusHandler(); + textComponent.addFocusListener(focusListener); + } } /** @@ -834,10 +902,12 @@ public abstract class BasicTextUI extends TextUI */ public void uninstallUI(final JComponent component) { - super.uninstallUI(component); + textComponent.removePropertyChangeListener(handler); + textComponent.getDocument().removeDocumentListener(handler); rootView.setView(null); uninstallDefaults(); + uninstallFixedDefaults(); uninstallListeners(); uninstallKeyboardActions(); @@ -850,7 +920,29 @@ public abstract class BasicTextUI extends TextUI */ protected void uninstallDefaults() { - // Do nothing here. + if (textComponent.getCaretColor() instanceof UIResource) + textComponent.setCaretColor(null); + if (textComponent.getSelectionColor() instanceof UIResource) + textComponent.setSelectionColor(null); + if (textComponent.getDisabledTextColor() instanceof UIResource) + textComponent.setDisabledTextColor(null); + if (textComponent.getSelectedTextColor() instanceof UIResource) + textComponent.setSelectedTextColor(null); + LookAndFeel.uninstallBorder(textComponent); + if (textComponent.getMargin() instanceof UIResource) + textComponent.setMargin(null); + } + + /** + * Uninstalls additional fixed defaults that were installed + * by installFixedDefaults(). + */ + private void uninstallFixedDefaults() + { + if (textComponent.getCaret() instanceof UIResource) + textComponent.setCaret(null); + if (textComponent.getHighlighter() instanceof UIResource) + textComponent.setHighlighter(null); } /** @@ -859,7 +951,10 @@ public abstract class BasicTextUI extends TextUI */ protected void uninstallListeners() { - textComponent.removeFocusListener(focuslistener); + // Don't nullify the focusListener field, as it is static and shared + // between components. + if (focusListener != null) + textComponent.removeFocusListener(focusListener); } /** @@ -891,14 +986,38 @@ public abstract class BasicTextUI extends TextUI */ public Dimension getPreferredSize(JComponent c) { - View v = getRootView(textComponent); - - float w = v.getPreferredSpan(View.X_AXIS); - float h = v.getPreferredSpan(View.Y_AXIS); - + Dimension d = c.getSize(); Insets i = c.getInsets(); - return new Dimension((int) w + i.left + i.right, + // We need to lock here, since we require the view hierarchy to _not_ + // change in between. + float w; + float h; + Document doc = textComponent.getDocument(); + if (doc instanceof AbstractDocument) + ((AbstractDocument) doc).readLock(); + try + { + if (d.width > (i.left + i.right) && d.height > (i.top + i.bottom)) + { + rootView.setSize(d.width - i.left - i.right, + d.height - i.top - i.bottom); + } + else + { + // Not laid out yet. Force some pseudo size. + rootView.setSize(Integer.MAX_VALUE, Integer.MAX_VALUE); + } + w = rootView.getPreferredSpan(View.X_AXIS); + h = rootView.getPreferredSpan(View.Y_AXIS); + } + finally + { + if (doc instanceof AbstractDocument) + ((AbstractDocument) doc).readUnlock(); + } + Dimension size = new Dimension((int) w + i.left + i.right, (int) h + i.top + i.bottom); + return size; } /** @@ -912,8 +1031,27 @@ public abstract class BasicTextUI extends TextUI */ public Dimension getMaximumSize(JComponent c) { - // Sun's implementation returns Integer.MAX_VALUE here, so do we. - return new Dimension(Integer.MAX_VALUE, Integer.MAX_VALUE); + Dimension d = new Dimension(); + Insets i = c.getInsets(); + Document doc = textComponent.getDocument(); + // We need to lock here, since we require the view hierarchy to _not_ + // change in between. + if (doc instanceof AbstractDocument) + ((AbstractDocument) doc).readLock(); + try + { + // Check for overflow here. + d.width = (int) Math.min((long) rootView.getMaximumSpan(View.X_AXIS) + + i.left + i.right, Integer.MAX_VALUE); + d.height = (int) Math.min((long) rootView.getMaximumSpan(View.Y_AXIS) + + i.top + i.bottom, Integer.MAX_VALUE); + } + finally + { + if (doc instanceof AbstractDocument) + ((AbstractDocument) doc).readUnlock(); + } + return d; } /** @@ -924,8 +1062,26 @@ public abstract class BasicTextUI extends TextUI */ public Dimension getMinimumSize(JComponent c) { + Dimension d = new Dimension(); + Document doc = textComponent.getDocument(); + // We need to lock here, since we require the view hierarchy to _not_ + // change in between. + if (doc instanceof AbstractDocument) + ((AbstractDocument) doc).readLock(); + try + { + d.width = (int) rootView.getMinimumSpan(View.X_AXIS); + d.height = (int) rootView.getMinimumSpan(View.Y_AXIS); + } + finally + { + if (doc instanceof AbstractDocument) + ((AbstractDocument) doc).readUnlock(); + } Insets i = c.getInsets(); - return new Dimension(i.left + i.right, i.top + i.bottom); + d.width += i.left + i.right; + d.height += i.top + i.bottom; + return d; } /** @@ -946,7 +1102,6 @@ public abstract class BasicTextUI extends TextUI AbstractDocument aDoc = (AbstractDocument) doc; aDoc.readLock(); } - paintSafely(g); } finally @@ -996,7 +1151,6 @@ public abstract class BasicTextUI extends TextUI g.setColor(oldColor); } - rootView.paint(g, getVisibleEditorRect()); if (caret != null && textComponent.hasFocus()) @@ -1104,6 +1258,8 @@ public abstract class BasicTextUI extends TextUI */ public EditorKit getEditorKit(JTextComponent t) { + if (kit == null) + kit = new DefaultEditorKit(); return kit; } @@ -1126,12 +1282,26 @@ public abstract class BasicTextUI extends TextUI Position.Bias[] biasRet) throws BadLocationException { - // A comment in the spec of NavigationFilter.getNextVisualPositionFrom() - // suggests that this method should be implemented by forwarding the call - // the root view. - return rootView.getNextVisualPositionFrom(pos, b, - getVisibleEditorRect(), - direction, biasRet); + int offset = -1; + Document doc = textComponent.getDocument(); + if (doc instanceof AbstractDocument) + ((AbstractDocument) doc).readLock(); + try + { + Rectangle alloc = getVisibleEditorRect(); + if (alloc != null) + { + rootView.setSize(alloc.width, alloc.height); + offset = rootView.getNextVisualPositionFrom(pos, b, alloc, + direction, biasRet); + } + } + finally + { + if (doc instanceof AbstractDocument) + ((AbstractDocument) doc).readUnlock(); + } + return offset; } /** @@ -1224,7 +1394,7 @@ public abstract class BasicTextUI extends TextUI */ public int viewToModel(JTextComponent t, Point pt) { - return viewToModel(t, pt, null); + return viewToModel(t, pt, new Position.Bias[1]); } /** @@ -1241,7 +1411,25 @@ public abstract class BasicTextUI extends TextUI */ public int viewToModel(JTextComponent t, Point pt, Position.Bias[] biasReturn) { - return rootView.viewToModel(pt.x, pt.y, getVisibleEditorRect(), biasReturn); + int offset = -1; + Document doc = textComponent.getDocument(); + if (doc instanceof AbstractDocument) + ((AbstractDocument) doc).readLock(); + try + { + Rectangle alloc = getVisibleEditorRect(); + if (alloc != null) + { + rootView.setSize(alloc.width, alloc.height); + offset = rootView.viewToModel(pt.x, pt.y, alloc, biasReturn); + } + } + finally + { + if (doc instanceof AbstractDocument) + ((AbstractDocument) doc).readUnlock(); + } + return offset; } /** @@ -1273,6 +1461,11 @@ public abstract class BasicTextUI extends TextUI } /** + * A cached Insets instance to be reused below. + */ + private Insets cachedInsets; + + /** * Returns the allocation to give the root view. * * @return the allocation to give the root view @@ -1290,7 +1483,7 @@ public abstract class BasicTextUI extends TextUI if (width <= 0 || height <= 0) return null; - Insets insets = textComponent.getInsets(); + Insets insets = textComponent.getInsets(cachedInsets); return new Rectangle(insets.left, insets.top, width - insets.left - insets.right, height - insets.top - insets.bottom); @@ -1341,4 +1534,5 @@ public abstract class BasicTextUI extends TextUI { // The default implementation does nothing. } + } |