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| 1 | /* | ||
| 2 | * Copyright (c) 1998, 2004, Oracle and/or its affiliates. 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. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * 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 | ||