Class BasicHTML

java.lang.Object
- javax.swing.plaf.basic.BasicHTML

public class BasicHTML
extends Object

Support for providing html views for the swing components. This translates a simple html string to a javax.swing.text.View implementation that can render the html and provide the necessary layout semantics.

Since:: 1.3

Fields

Modifier and Type	Field	Description
`static String`	`documentBaseKey`	Key stored as a client property to indicate the base that relative references are resolved against.
`static String`	`propertyKey`	Key to use for the html renderer when stored as a client property of a JComponent.

Constructors

Constructor	Description
`BasicHTML()`

Methods

Modifier and Type	Method	Description
`static View`	`createHTMLView(JComponent c, String html)`	Create an html renderer for the given component and string of html.
`static int`	`getHTMLBaseline(View view, int w, int h)`	Returns the baseline for the html renderer.
`static boolean`	`isHTMLString(String s)`	Check the given string to see if it should trigger the html rendering logic in a non-text component that supports html rendering.
`static void`	`updateRenderer(JComponent c, String text)`	Stash the HTML render for the given text into the client properties of the given JComponent.

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Fields

propertyKey

public static final String propertyKey

Key to use for the html renderer when stored as a client property of a JComponent.

See Also:: Constant Field Values

documentBaseKey

public static final String documentBaseKey

Key stored as a client property to indicate the base that relative references are resolved against. For example, lets say you keep your images in the directory resources relative to the code path, you would use the following the set the base:

jComponent.putClientProperty(documentBaseKey,
                                xxx.class.getResource("resources/"));

See Also:: Constant Field Values

Constructors

BasicHTML

public BasicHTML()

Methods

createHTMLView

public static View createHTMLView(JComponent c,
                                  String html)

Create an html renderer for the given component and string of html.

Parameters:: c - a component; html - an HTML string
Returns:: an HTML renderer

getHTMLBaseline

public static int getHTMLBaseline(View view,
                                  int w,
                                  int h)

Returns the baseline for the html renderer.

Parameters:: view - the View to get the baseline for; w - the width to get the baseline for; h - the height to get the baseline for
Returns:: baseline or a value < 0 indicating there is no reasonable baseline
Throws:: IllegalArgumentException - if width or height is < 0
Since:: 1.6
See Also:: FontMetrics, JComponent.getBaseline(int,int)

isHTMLString

public static boolean isHTMLString(String s)

Check the given string to see if it should trigger the html rendering logic in a non-text component that supports html rendering.

Parameters:: s - a text
Returns:: true if the given string should trigger the html rendering logic in a non-text component

updateRenderer

public static void updateRenderer(JComponent c,
                                  String text)

Stash the HTML render for the given text into the client properties of the given JComponent. If the given text is NOT HTML the property will be cleared of any renderer.

This method is useful for ComponentUI implementations that are static (i.e. shared) and get their state entirely from the JComponent.

Parameters:: c - a component; text - a text

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https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/javax/swing/plaf/basic/BasicHTML.html