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/*
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* Copyright (c) 1998, 2004, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package javax.swing.text.html;
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import java.awt.*;
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import java.awt.event.*;
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import java.io.*;
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import java.net.MalformedURLException;
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import java.net.URL;
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import javax.swing.text.*;
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import javax.swing.*;
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import javax.swing.border.*;
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import javax.swing.event.*;
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import java.util.*;
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/**
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* EditableView sets the view it contains to be visible only when the
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* JTextComponent the view is contained in is editable. The min/pref/max
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* size is 0 when not visible.
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*
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* @author Scott Violet
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*/
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class EditableView extends ComponentView {
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EditableView(Element e) {
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super(e);
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}
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public float getMinimumSpan(int axis) {
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if (isVisible) {
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return super.getMinimumSpan(axis);
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}
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return 0;
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}
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public float getPreferredSpan(int axis) {
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if (isVisible) {
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return super.getPreferredSpan(axis);
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}
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return 0;
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}
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public float getMaximumSpan(int axis) {
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if (isVisible) {
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return super.getMaximumSpan(axis);
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}
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return 0;
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}
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public void paint(Graphics g, Shape allocation) {
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Component c = getComponent();
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Container host = getContainer();
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if (host != null &&
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isVisible != ((JTextComponent)host).isEditable()) {
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isVisible = ((JTextComponent)host).isEditable();
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preferenceChanged(null, true, true);
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host.repaint();
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}
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/*
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* Note: we cannot tweak the visible state of the
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* component in createComponent() even though it
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* gets called after the setParent() call where
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* the value of the boolean is set. This
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* because, the setComponentParent() in the
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* superclass, always does a setVisible(false)
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* after calling createComponent(). We therefore
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* use this flag in the paint() method to
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* setVisible() to true if required.
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*/
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if (isVisible) {
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super.paint(g, allocation);
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}
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else {
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setSize(0, 0);
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}
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if (c != null) {
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c.setFocusable(isVisible);
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}
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}
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public void setParent(View parent) {
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if (parent != null) {
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Container host = parent.getContainer();
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if (host != null) {
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if (host instanceof JTextComponent) {
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isVisible = ((JTextComponent)host).isEditable();
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} else {
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isVisible = false;
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}
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}
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}
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super.setParent(parent);
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}
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/**
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* @return true if the Component is visible.
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*/
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public boolean isVisible() {
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return isVisible;
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}
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/** Set to true if the component is visible. This is based off the
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* editability of the container. */
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private boolean isVisible;
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} // End of EditableView
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