RFR: JDK-8314731 : Adds support for the alt attribute in the image type imput HTML tag.

Tue Aug 22 16:43:18 UTC 2023

On Thu, 17 Aug 2023 00:16:07 GMT, ScientificWare <duke at openjdk.org> wrote:

> According [HTML 3.2 specification](https://www.w3.org/TR/2018/SPSD-html32-20180315/#input)
> 
> `alt` is not an attribute of the `imput` element.
> 
> According [HTML 4.01 specifications](https://www.w3.org/TR/html4/interact/forms.html#h-17.4) : 
> 
>> ... For accessibility reasons, authors should provide [alternate text](https://www.w3.org/TR/html4/struct/objects.html#alternate-text) for the image via the [alt](https://www.w3.org/TR/html4/struct/objects.html#adef-alt) attribute. ...
> 
> This feature in not implemented in `FormView.java`.
> 
> ⚠️  ~~This also affects the HTML 32 DTD~~
> 
> ![Screenshot_20230817_025316](https://github.com/openjdk/jdk/assets/19194678/8e580574-d842-4a65-884b-26e33cd12138)
> 
> Left before the patch and right after the patch.
> 
> 
> import java.awt.BorderLayout;
> import java.awt.Dimension;
> import javax.swing.JEditorPane;
> import javax.swing.JFrame;
> import javax.swing.JScrollPane;
> import javax.swing.SwingUtilities;
> import javax.swing.text.Document;
> import javax.swing.text.html.HTMLEditorKit;
> import javax.swing.text.html.StyleSheet;
> 
> public class HTMLAddsSupportAltInputTag {
>   public static void main(String[] args) {
>     new HTMLAddsSupportAltInputTag();
>   }
>   
>   public HTMLAddsSupportAltInputTag() {
>     SwingUtilities.invokeLater(new Runnable(){
>       public void run(){
>         JEditorPane jEditorPane = new JEditorPane();
>         jEditorPane.setEditable(false);
>         JScrollPane scrollPane = new JScrollPane(jEditorPane);
>         HTMLEditorKit kit = new HTMLEditorKit();
>         jEditorPane.setEditorKit(kit);
>         StyleSheet styleSheet = kit.getStyleSheet();
>         styleSheet.addRule("""
>             body {
>                 color: #000;
>                 font-family:times;
>                 margin: 4px;
>             }
>             """);
>         String htmlString = """
>             <html>
>                 <body>
>                     <input type=image name=point src="file:oracle_logo_50x50.jpg" alt="Logo Oracle JPG">
>                     <p>
>                     <input type=image name=point src="file:none_oracle_logo_50x50.jpg" alt="Logo Oracle JPG">
>                     <p>
>                     <input type=image name=point src="files:none_oracle_logo_50x50.jpg">
>                 </body>
>             </html>
>             """;
>         Document doc = kit.createDefaultDocument();
>         jEditorPane.setDocument(doc);
>         jEditorPane.setText(htmlString);
>         JFrame jf = new JFrame("CSS named colors Test");
>         jf.getContentPane().add(scrollPane, BorderLayout.CENTER);
> ...

https://bugs.openjdk.org/browse/JDK-8314731

-------------

PR Comment: https://git.openjdk.org/jdk/pull/15319#issuecomment-1688515732