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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
/** * 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 instanceof JTextComponent && 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); }
Returns:true if the Component is visible.
/** * @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.
/** Set to true if the component is visible. This is based off the * editability of the container. */
private boolean isVisible; } // End of EditableView