| /* |
| * Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package javax.swing.plaf.basic; |
| |
| import java.beans.*; |
| import java.awt.*; |
| import java.awt.event.KeyEvent; |
| import java.awt.event.InputEvent; |
| import javax.swing.*; |
| import javax.swing.event.DocumentEvent; |
| import javax.swing.text.*; |
| import javax.swing.plaf.*; |
| |
| /** |
| * Provides the look and feel for a plain text editor. In this |
| * implementation the default UI is extended to act as a simple |
| * view factory. |
| * <p> |
| * <strong>Warning:</strong> |
| * Serialized objects of this class will not be compatible with |
| * future Swing releases. The current serialization support is |
| * appropriate for short term storage or RMI between applications running |
| * the same version of Swing. As of 1.4, support for long term storage |
| * of all JavaBeans<sup><font size="-2">TM</font></sup> |
| * has been added to the <code>java.beans</code> package. |
| * Please see {@link java.beans.XMLEncoder}. |
| * |
| * @author Timothy Prinzing |
| */ |
| public class BasicTextAreaUI extends BasicTextUI { |
| |
| /** |
| * Creates a UI for a JTextArea. |
| * |
| * @param ta a text area |
| * @return the UI |
| */ |
| public static ComponentUI createUI(JComponent ta) { |
| return new BasicTextAreaUI(); |
| } |
| |
| /** |
| * Constructs a new BasicTextAreaUI object. |
| */ |
| public BasicTextAreaUI() { |
| super(); |
| } |
| |
| /** |
| * Fetches the name used as a key to look up properties through the |
| * UIManager. This is used as a prefix to all the standard |
| * text properties. |
| * |
| * @return the name ("TextArea") |
| */ |
| protected String getPropertyPrefix() { |
| return "TextArea"; |
| } |
| |
| protected void installDefaults() { |
| super.installDefaults(); |
| //the fix for 4785160 is undone |
| } |
| |
| /** |
| * This method gets called when a bound property is changed |
| * on the associated JTextComponent. This is a hook |
| * which UI implementations may change to reflect how the |
| * UI displays bound properties of JTextComponent subclasses. |
| * This is implemented to rebuild the View when the |
| * <em>WrapLine</em> or the <em>WrapStyleWord</em> property changes. |
| * |
| * @param evt the property change event |
| */ |
| protected void propertyChange(PropertyChangeEvent evt) { |
| super.propertyChange(evt); |
| if (evt.getPropertyName().equals("lineWrap") || |
| evt.getPropertyName().equals("wrapStyleWord") || |
| evt.getPropertyName().equals("tabSize")) { |
| // rebuild the view |
| modelChanged(); |
| } else if ("editable".equals(evt.getPropertyName())) { |
| updateFocusTraversalKeys(); |
| } |
| } |
| |
| |
| /** |
| * The method is overridden to take into account caret width. |
| * |
| * @param c the editor component |
| * @return the preferred size |
| * @throws IllegalArgumentException if invalid value is passed |
| * |
| * @since 1.5 |
| */ |
| public Dimension getPreferredSize(JComponent c) { |
| return super.getPreferredSize(c); |
| //the fix for 4785160 is undone |
| } |
| |
| /** |
| * The method is overridden to take into account caret width. |
| * |
| * @param c the editor component |
| * @return the minimum size |
| * @throws IllegalArgumentException if invalid value is passed |
| * |
| * @since 1.5 |
| */ |
| public Dimension getMinimumSize(JComponent c) { |
| return super.getMinimumSize(c); |
| //the fix for 4785160 is undone |
| } |
| |
| /** |
| * Creates the view for an element. Returns a WrappedPlainView or |
| * PlainView. |
| * |
| * @param elem the element |
| * @return the view |
| */ |
| public View create(Element elem) { |
| Document doc = elem.getDocument(); |
| Object i18nFlag = doc.getProperty("i18n"/*AbstractDocument.I18NProperty*/); |
| if ((i18nFlag != null) && i18nFlag.equals(Boolean.TRUE)) { |
| // build a view that support bidi |
| return createI18N(elem); |
| } else { |
| JTextComponent c = getComponent(); |
| if (c instanceof JTextArea) { |
| JTextArea area = (JTextArea) c; |
| View v; |
| if (area.getLineWrap()) { |
| v = new WrappedPlainView(elem, area.getWrapStyleWord()); |
| } else { |
| v = new PlainView(elem); |
| } |
| return v; |
| } |
| } |
| return null; |
| } |
| |
| View createI18N(Element elem) { |
| String kind = elem.getName(); |
| if (kind != null) { |
| if (kind.equals(AbstractDocument.ContentElementName)) { |
| return new PlainParagraph(elem); |
| } else if (kind.equals(AbstractDocument.ParagraphElementName)) { |
| return new BoxView(elem, View.Y_AXIS); |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Returns the baseline. |
| * |
| * @throws NullPointerException {@inheritDoc} |
| * @throws IllegalArgumentException {@inheritDoc} |
| * @see javax.swing.JComponent#getBaseline(int, int) |
| * @since 1.6 |
| */ |
| public int getBaseline(JComponent c, int width, int height) { |
| super.getBaseline(c, width, height); |
| Object i18nFlag = ((JTextComponent)c).getDocument(). |
| getProperty("i18n"); |
| Insets insets = c.getInsets(); |
| if (Boolean.TRUE.equals(i18nFlag)) { |
| View rootView = getRootView((JTextComponent)c); |
| if (rootView.getViewCount() > 0) { |
| height = height - insets.top - insets.bottom; |
| int baseline = insets.top; |
| int fieldBaseline = BasicHTML.getBaseline( |
| rootView.getView(0), width - insets.left - |
| insets.right, height); |
| if (fieldBaseline < 0) { |
| return -1; |
| } |
| return baseline + fieldBaseline; |
| } |
| return -1; |
| } |
| FontMetrics fm = c.getFontMetrics(c.getFont()); |
| return insets.top + fm.getAscent(); |
| } |
| |
| /** |
| * Returns an enum indicating how the baseline of the component |
| * changes as the size changes. |
| * |
| * @throws NullPointerException {@inheritDoc} |
| * @see javax.swing.JComponent#getBaseline(int, int) |
| * @since 1.6 |
| */ |
| public Component.BaselineResizeBehavior getBaselineResizeBehavior( |
| JComponent c) { |
| super.getBaselineResizeBehavior(c); |
| return Component.BaselineResizeBehavior.CONSTANT_ASCENT; |
| } |
| |
| |
| /** |
| * Paragraph for representing plain-text lines that support |
| * bidirectional text. |
| */ |
| static class PlainParagraph extends ParagraphView { |
| |
| PlainParagraph(Element elem) { |
| super(elem); |
| layoutPool = new LogicalView(elem); |
| layoutPool.setParent(this); |
| } |
| |
| public void setParent(View parent) { |
| super.setParent(parent); |
| if (parent != null) { |
| setPropertiesFromAttributes(); |
| } |
| } |
| |
| protected void setPropertiesFromAttributes() { |
| Component c = getContainer(); |
| if ((c != null) && (! c.getComponentOrientation().isLeftToRight())) { |
| setJustification(StyleConstants.ALIGN_RIGHT); |
| } else { |
| setJustification(StyleConstants.ALIGN_LEFT); |
| } |
| } |
| |
| /** |
| * Fetch the constraining span to flow against for |
| * the given child index. |
| */ |
| public int getFlowSpan(int index) { |
| Component c = getContainer(); |
| if (c instanceof JTextArea) { |
| JTextArea area = (JTextArea) c; |
| if (! area.getLineWrap()) { |
| // no limit if unwrapped |
| return Integer.MAX_VALUE; |
| } |
| } |
| return super.getFlowSpan(index); |
| } |
| |
| protected SizeRequirements calculateMinorAxisRequirements(int axis, |
| SizeRequirements r) { |
| SizeRequirements req = super.calculateMinorAxisRequirements(axis, r); |
| Component c = getContainer(); |
| if (c instanceof JTextArea) { |
| JTextArea area = (JTextArea) c; |
| if (! area.getLineWrap()) { |
| // min is pref if unwrapped |
| req.minimum = req.preferred; |
| } else { |
| req.minimum = 0; |
| req.preferred = getWidth(); |
| if (req.preferred == Integer.MAX_VALUE) { |
| // We have been initially set to MAX_VALUE, but we |
| // don't want this as our preferred. |
| req.preferred = 100; |
| } |
| } |
| } |
| return req; |
| } |
| |
| /** |
| * Sets the size of the view. If the size has changed, layout |
| * is redone. The size is the full size of the view including |
| * the inset areas. |
| * |
| * @param width the width >= 0 |
| * @param height the height >= 0 |
| */ |
| public void setSize(float width, float height) { |
| if ((int) width != getWidth()) { |
| preferenceChanged(null, true, true); |
| } |
| super.setSize(width, height); |
| } |
| |
| /** |
| * This class can be used to represent a logical view for |
| * a flow. It keeps the children updated to reflect the state |
| * of the model, gives the logical child views access to the |
| * view hierarchy, and calculates a preferred span. It doesn't |
| * do any rendering, layout, or model/view translation. |
| */ |
| static class LogicalView extends CompositeView { |
| |
| LogicalView(Element elem) { |
| super(elem); |
| } |
| |
| protected int getViewIndexAtPosition(int pos) { |
| Element elem = getElement(); |
| if (elem.getElementCount() > 0) { |
| return elem.getElementIndex(pos); |
| } |
| return 0; |
| } |
| |
| protected boolean updateChildren(DocumentEvent.ElementChange ec, |
| DocumentEvent e, ViewFactory f) { |
| return false; |
| } |
| |
| protected void loadChildren(ViewFactory f) { |
| Element elem = getElement(); |
| if (elem.getElementCount() > 0) { |
| super.loadChildren(f); |
| } else { |
| View v = new GlyphView(elem); |
| append(v); |
| } |
| } |
| |
| public float getPreferredSpan(int axis) { |
| if( getViewCount() != 1 ) |
| throw new Error("One child view is assumed."); |
| |
| View v = getView(0); |
| return v.getPreferredSpan(axis); |
| } |
| |
| /** |
| * Forward the DocumentEvent to the given child view. This |
| * is implemented to reparent the child to the logical view |
| * (the children may have been parented by a row in the flow |
| * if they fit without breaking) and then execute the superclass |
| * behavior. |
| * |
| * @param v the child view to forward the event to. |
| * @param e the change information from the associated document |
| * @param a the current allocation of the view |
| * @param f the factory to use to rebuild if the view has children |
| * @see #forwardUpdate |
| * @since 1.3 |
| */ |
| protected void forwardUpdateToView(View v, DocumentEvent e, |
| Shape a, ViewFactory f) { |
| v.setParent(this); |
| super.forwardUpdateToView(v, e, a, f); |
| } |
| |
| // The following methods don't do anything useful, they |
| // simply keep the class from being abstract. |
| |
| public void paint(Graphics g, Shape allocation) { |
| } |
| |
| protected boolean isBefore(int x, int y, Rectangle alloc) { |
| return false; |
| } |
| |
| protected boolean isAfter(int x, int y, Rectangle alloc) { |
| return false; |
| } |
| |
| protected View getViewAtPoint(int x, int y, Rectangle alloc) { |
| return null; |
| } |
| |
| protected void childAllocation(int index, Rectangle a) { |
| } |
| } |
| } |
| |
| } |
