/*
* @(#)EditableView.java 1.11 03/12/19
*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
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
* @version 1.11, 12/19/03
*/
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) {
isVisible = ((JTextComponent)host).isEditable();
}
}
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
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