| /* |
| * Copyright (c) 1998, 2014, 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.text.html; |
| |
| import java.awt.*; |
| import java.awt.event.*; |
| import java.io.*; |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import javax.swing.text.*; |
| import javax.swing.*; |
| import javax.swing.border.*; |
| import javax.swing.event.*; |
| import java.util.*; |
| |
| /** |
| * HiddenTagView subclasses EditableView to contain a JTextField showing |
| * the element name. When the textfield is edited the element name is |
| * reset. As this inherits from EditableView if the JTextComponent is |
| * not editable, the textfield will not be visible. |
| * |
| * @author Scott Violet |
| */ |
| class HiddenTagView extends EditableView implements DocumentListener { |
| HiddenTagView(Element e) { |
| super(e); |
| yAlign = 1; |
| } |
| |
| protected Component createComponent() { |
| JTextField tf = new JTextField(getElement().getName()); |
| Document doc = getDocument(); |
| Font font; |
| if (doc instanceof StyledDocument) { |
| font = ((StyledDocument)doc).getFont(getAttributes()); |
| tf.setFont(font); |
| } |
| else { |
| font = tf.getFont(); |
| } |
| tf.getDocument().addDocumentListener(this); |
| updateYAlign(font); |
| |
| // Create a panel to wrap the textfield so that the textfields |
| // laf border shows through. |
| JPanel panel = new JPanel(new BorderLayout()); |
| panel.setBackground(null); |
| if (isEndTag()) { |
| panel.setBorder(EndBorder); |
| } |
| else { |
| panel.setBorder(StartBorder); |
| } |
| panel.add(tf); |
| return panel; |
| } |
| |
| public float getAlignment(int axis) { |
| if (axis == View.Y_AXIS) { |
| return yAlign; |
| } |
| return 0.5f; |
| } |
| |
| public float getMinimumSpan(int axis) { |
| if (axis == View.X_AXIS && isVisible()) { |
| // Default to preferred. |
| return Math.max(30, super.getPreferredSpan(axis)); |
| } |
| return super.getMinimumSpan(axis); |
| } |
| |
| public float getPreferredSpan(int axis) { |
| if (axis == View.X_AXIS && isVisible()) { |
| return Math.max(30, super.getPreferredSpan(axis)); |
| } |
| return super.getPreferredSpan(axis); |
| } |
| |
| public float getMaximumSpan(int axis) { |
| if (axis == View.X_AXIS && isVisible()) { |
| // Default to preferred. |
| return Math.max(30, super.getMaximumSpan(axis)); |
| } |
| return super.getMaximumSpan(axis); |
| } |
| |
| // DocumentListener methods |
| public void insertUpdate(DocumentEvent e) { |
| updateModelFromText(); |
| } |
| |
| public void removeUpdate(DocumentEvent e) { |
| updateModelFromText(); |
| } |
| |
| public void changedUpdate(DocumentEvent e) { |
| updateModelFromText(); |
| } |
| |
| // View method |
| public void changedUpdate(DocumentEvent e, Shape a, ViewFactory f) { |
| if (!isSettingAttributes) { |
| setTextFromModel(); |
| } |
| } |
| |
| // local methods |
| |
| @SuppressWarnings("deprecation") |
| void updateYAlign(Font font) { |
| Container c = getContainer(); |
| FontMetrics fm = (c != null) ? c.getFontMetrics(font) : |
| Toolkit.getDefaultToolkit().getFontMetrics(font); |
| float h = fm.getHeight(); |
| float d = fm.getDescent(); |
| yAlign = (h > 0) ? (h - d) / h : 0; |
| } |
| |
| void resetBorder() { |
| Component comp = getComponent(); |
| |
| if (comp != null) { |
| if (isEndTag()) { |
| ((JPanel)comp).setBorder(EndBorder); |
| } |
| else { |
| ((JPanel)comp).setBorder(StartBorder); |
| } |
| } |
| } |
| |
| /** |
| * This resets the text on the text component we created to match |
| * that of the AttributeSet for the Element we represent. |
| * <p>If this is invoked on the event dispatching thread, this |
| * directly invokes <code>_setTextFromModel</code>, otherwise |
| * <code>SwingUtilities.invokeLater</code> is used to schedule execution |
| * of <code>_setTextFromModel</code>. |
| */ |
| void setTextFromModel() { |
| if (SwingUtilities.isEventDispatchThread()) { |
| _setTextFromModel(); |
| } |
| else { |
| SwingUtilities.invokeLater(new Runnable() { |
| public void run() { |
| _setTextFromModel(); |
| } |
| }); |
| } |
| } |
| |
| /** |
| * This resets the text on the text component we created to match |
| * that of the AttributeSet for the Element we represent. |
| */ |
| void _setTextFromModel() { |
| Document doc = getDocument(); |
| try { |
| isSettingAttributes = true; |
| if (doc instanceof AbstractDocument) { |
| ((AbstractDocument)doc).readLock(); |
| } |
| JTextComponent text = getTextComponent(); |
| if (text != null) { |
| text.setText(getRepresentedText()); |
| resetBorder(); |
| Container host = getContainer(); |
| if (host != null) { |
| preferenceChanged(this, true, true); |
| host.repaint(); |
| } |
| } |
| } |
| finally { |
| isSettingAttributes = false; |
| if (doc instanceof AbstractDocument) { |
| ((AbstractDocument)doc).readUnlock(); |
| } |
| } |
| } |
| |
| /** |
| * This copies the text from the text component we've created |
| * to the Element's AttributeSet we represent. |
| * <p>If this is invoked on the event dispatching thread, this |
| * directly invokes <code>_updateModelFromText</code>, otherwise |
| * <code>SwingUtilities.invokeLater</code> is used to schedule execution |
| * of <code>_updateModelFromText</code>. |
| */ |
| void updateModelFromText() { |
| if (!isSettingAttributes) { |
| if (SwingUtilities.isEventDispatchThread()) { |
| _updateModelFromText(); |
| } |
| else { |
| SwingUtilities.invokeLater(new Runnable() { |
| public void run() { |
| _updateModelFromText(); |
| } |
| }); |
| } |
| } |
| } |
| |
| /** |
| * This copies the text from the text component we've created |
| * to the Element's AttributeSet we represent. |
| */ |
| void _updateModelFromText() { |
| Document doc = getDocument(); |
| Object name = getElement().getAttributes().getAttribute |
| (StyleConstants.NameAttribute); |
| if ((name instanceof HTML.UnknownTag) && |
| (doc instanceof StyledDocument)) { |
| SimpleAttributeSet sas = new SimpleAttributeSet(); |
| JTextComponent textComponent = getTextComponent(); |
| if (textComponent != null) { |
| String text = textComponent.getText(); |
| isSettingAttributes = true; |
| try { |
| sas.addAttribute(StyleConstants.NameAttribute, |
| new HTML.UnknownTag(text)); |
| ((StyledDocument)doc).setCharacterAttributes |
| (getStartOffset(), getEndOffset() - |
| getStartOffset(), sas, false); |
| } |
| finally { |
| isSettingAttributes = false; |
| } |
| } |
| } |
| } |
| |
| JTextComponent getTextComponent() { |
| Component comp = getComponent(); |
| |
| return (comp == null) ? null : (JTextComponent)((Container)comp). |
| getComponent(0); |
| } |
| |
| String getRepresentedText() { |
| String retValue = getElement().getName(); |
| return (retValue == null) ? "" : retValue; |
| } |
| |
| boolean isEndTag() { |
| AttributeSet as = getElement().getAttributes(); |
| if (as != null) { |
| Object end = as.getAttribute(HTML.Attribute.ENDTAG); |
| if (end != null && (end instanceof String) && |
| ((String)end).equals("true")) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** Alignment along the y axis, based on the font of the textfield. */ |
| float yAlign; |
| /** Set to true when setting attributes. */ |
| boolean isSettingAttributes; |
| |
| |
| // Following are for Borders that used for Unknown tags and comments. |
| // |
| // Border defines |
| static final int circleR = 3; |
| static final int circleD = circleR * 2; |
| static final int tagSize = 6; |
| static final int padding = 3; |
| static final Color UnknownTagBorderColor = Color.black; |
| static final Border StartBorder = new StartTagBorder(); |
| static final Border EndBorder = new EndTagBorder(); |
| |
| @SuppressWarnings("serial") // Same-version serialization only |
| static class StartTagBorder implements Border, Serializable { |
| public void paintBorder(Component c, Graphics g, int x, int y, |
| int width, int height) { |
| g.setColor(UnknownTagBorderColor); |
| x += padding; |
| width -= (padding * 2); |
| g.drawLine(x, y + circleR, |
| x, y + height - circleR); |
| g.drawArc(x, y + height - circleD - 1, |
| circleD, circleD, 180, 90); |
| g.drawArc(x, y, circleD, circleD, 90, 90); |
| g.drawLine(x + circleR, y, x + width - tagSize, y); |
| g.drawLine(x + circleR, y + height - 1, |
| x + width - tagSize, y + height - 1); |
| |
| g.drawLine(x + width - tagSize, y, |
| x + width - 1, y + height / 2); |
| g.drawLine(x + width - tagSize, y + height, |
| x + width - 1, y + height / 2); |
| } |
| |
| public Insets getBorderInsets(Component c) { |
| return new Insets(2, 2 + padding, 2, tagSize + 2 + padding); |
| } |
| |
| public boolean isBorderOpaque() { |
| return false; |
| } |
| } // End of class HiddenTagView.StartTagBorder |
| |
| @SuppressWarnings("serial") // Same-version serialization only |
| static class EndTagBorder implements Border, Serializable { |
| public void paintBorder(Component c, Graphics g, int x, int y, |
| int width, int height) { |
| g.setColor(UnknownTagBorderColor); |
| x += padding; |
| width -= (padding * 2); |
| g.drawLine(x + width - 1, y + circleR, |
| x + width - 1, y + height - circleR); |
| g.drawArc(x + width - circleD - 1, y + height - circleD - 1, |
| circleD, circleD, 270, 90); |
| g.drawArc(x + width - circleD - 1, y, circleD, circleD, 0, 90); |
| g.drawLine(x + tagSize, y, x + width - circleR, y); |
| g.drawLine(x + tagSize, y + height - 1, |
| x + width - circleR, y + height - 1); |
| |
| g.drawLine(x + tagSize, y, |
| x, y + height / 2); |
| g.drawLine(x + tagSize, y + height, |
| x, y + height / 2); |
| } |
| |
| public Insets getBorderInsets(Component c) { |
| return new Insets(2, tagSize + 2 + padding, 2, 2 + padding); |
| } |
| |
| public boolean isBorderOpaque() { |
| return false; |
| } |
| } // End of class HiddenTagView.EndTagBorder |
| |
| |
| } // End of HiddenTagView |