J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1998-2004 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | package javax.swing.text.html; |
| 26 | |
| 27 | import java.awt.*; |
| 28 | import java.awt.event.*; |
| 29 | import java.io.*; |
| 30 | import java.net.MalformedURLException; |
| 31 | import java.net.URL; |
| 32 | import javax.swing.text.*; |
| 33 | import javax.swing.*; |
| 34 | import javax.swing.border.*; |
| 35 | import javax.swing.event.*; |
| 36 | import java.util.*; |
| 37 | |
| 38 | /** |
| 39 | * EditableView sets the view it contains to be visible only when the |
| 40 | * JTextComponent the view is contained in is editable. The min/pref/max |
| 41 | * size is 0 when not visible. |
| 42 | * |
| 43 | * @author Scott Violet |
| 44 | */ |
| 45 | class EditableView extends ComponentView { |
| 46 | |
| 47 | EditableView(Element e) { |
| 48 | super(e); |
| 49 | } |
| 50 | |
| 51 | public float getMinimumSpan(int axis) { |
| 52 | if (isVisible) { |
| 53 | return super.getMinimumSpan(axis); |
| 54 | } |
| 55 | return 0; |
| 56 | } |
| 57 | |
| 58 | public float getPreferredSpan(int axis) { |
| 59 | if (isVisible) { |
| 60 | return super.getPreferredSpan(axis); |
| 61 | } |
| 62 | return 0; |
| 63 | } |
| 64 | |
| 65 | public float getMaximumSpan(int axis) { |
| 66 | if (isVisible) { |
| 67 | return super.getMaximumSpan(axis); |
| 68 | } |
| 69 | return 0; |
| 70 | } |
| 71 | |
| 72 | public void paint(Graphics g, Shape allocation) { |
| 73 | Component c = getComponent(); |
| 74 | Container host = getContainer(); |
| 75 | |
| 76 | if (host != null && |
| 77 | isVisible != ((JTextComponent)host).isEditable()) { |
| 78 | isVisible = ((JTextComponent)host).isEditable(); |
| 79 | preferenceChanged(null, true, true); |
| 80 | host.repaint(); |
| 81 | } |
| 82 | /* |
| 83 | * Note: we cannot tweak the visible state of the |
| 84 | * component in createComponent() even though it |
| 85 | * gets called after the setParent() call where |
| 86 | * the value of the boolean is set. This |
| 87 | * because, the setComponentParent() in the |
| 88 | * superclass, always does a setVisible(false) |
| 89 | * after calling createComponent(). We therefore |
| 90 | * use this flag in the paint() method to |
| 91 | * setVisible() to true if required. |
| 92 | */ |
| 93 | if (isVisible) { |
| 94 | super.paint(g, allocation); |
| 95 | } |
| 96 | else { |
| 97 | setSize(0, 0); |
| 98 | } |
| 99 | if (c != null) { |
| 100 | c.setFocusable(isVisible); |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | public void setParent(View parent) { |
| 105 | if (parent != null) { |
| 106 | Container host = parent.getContainer(); |
| 107 | if (host != null) { |
| 108 | if (host instanceof JTextComponent) { |
| 109 | isVisible = ((JTextComponent)host).isEditable(); |
| 110 | } else { |
| 111 | isVisible = false; |
| 112 | } |
| 113 | } |
| 114 | } |
| 115 | super.setParent(parent); |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * @return true if the Component is visible. |
| 120 | */ |
| 121 | public boolean isVisible() { |
| 122 | return isVisible; |
| 123 | } |
| 124 | |
| 125 | /** Set to true if the component is visible. This is based off the |
| 126 | * editability of the container. */ |
| 127 | private boolean isVisible; |
| 128 | } // End of EditableView |