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Java example source code file (EditableView.java)
The EditableView.java Java example source code/* * Copyright (c) 1998, 2004, 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.*; /** * EditableView sets the view it contains to be visible only when the * JTextComponent the view is contained in is editable. The min/pref/max * size is 0 when not visible. * * @author Scott Violet */ class EditableView extends ComponentView { EditableView(Element e) { super(e); } public float getMinimumSpan(int axis) { if (isVisible) { return super.getMinimumSpan(axis); } return 0; } public float getPreferredSpan(int axis) { if (isVisible) { return super.getPreferredSpan(axis); } return 0; } public float getMaximumSpan(int axis) { if (isVisible) { return super.getMaximumSpan(axis); } return 0; } public void paint(Graphics g, Shape allocation) { Component c = getComponent(); Container host = getContainer(); if (host != null && isVisible != ((JTextComponent)host).isEditable()) { isVisible = ((JTextComponent)host).isEditable(); preferenceChanged(null, true, true); host.repaint(); } /* * Note: we cannot tweak the visible state of the * component in createComponent() even though it * gets called after the setParent() call where * the value of the boolean is set. This * because, the setComponentParent() in the * superclass, always does a setVisible(false) * after calling createComponent(). We therefore * use this flag in the paint() method to * setVisible() to true if required. */ if (isVisible) { super.paint(g, allocation); } else { setSize(0, 0); } if (c != null) { c.setFocusable(isVisible); } } public void setParent(View parent) { if (parent != null) { Container host = parent.getContainer(); if (host != null) { if (host instanceof JTextComponent) { isVisible = ((JTextComponent)host).isEditable(); } else { isVisible = false; } } } super.setParent(parent); } /** * @return true if the Component is visible. */ public boolean isVisible() { return isVisible; } /** Set to true if the component is visible. This is based off the * editability of the container. */ private boolean isVisible; } // End of EditableView Other Java examples (source code examples)Here is a short list of links related to this Java EditableView.java source code file: |
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