Add ability to paste HTML with actionPaste

src/org/labkey/test/WebDriverWrapper.java

@@ -53,6 +53,7 @@
 import org.labkey.test.util.EscapeUtil;
 import org.labkey.test.util.Ext4Helper;
 import org.labkey.test.util.ExtHelper;
+import org.labkey.test.util.HtmlFragmentSelection;
 import org.labkey.test.util.LabKeyExpectedConditions;
 import org.labkey.test.util.LogMethod;
 import org.labkey.test.util.LoggedParam;
@@ -3503,14 +3504,14 @@ public void actionClear(WebElement input)
     }
 
     /**
-     *  puts the specified text into the clipboard, then pastes it into the specified element,
+     *  puts the specified text and html into the clipboard, then pastes it into the specified element,
      *  or whatever has focus at the moment.
      */
-    public void actionPaste(WebElement input, String text)
+    public void actionPaste(WebElement input, String text, boolean isHtml)
     {
         Keys cmdKey = WebDriverUtils.MODIFIER_KEY;
 
-        setClipboardContent(text);
+        setClipboardContent(text, isHtml);
 
         if (input == null)
         {
@@ -3531,16 +3532,40 @@ public void actionPaste(WebElement input, String text)
         }
     }
 
+    /**
+     *  puts the specified text into the clipboard, then pastes it into the specified element,
+     *  or whatever has focus at the moment.
+     */
+    public void actionPaste(WebElement input, String text)
+    {
+        actionPaste(input, text, false);
+    }
+
     public void clearClipboardContent()
     {
         setClipboardContent(" ");
     }
 
-    protected void setClipboardContent(String text)
+    protected void setClipboardContent(String text, boolean isHtml)
     {
         Clipboard c = Toolkit.getDefaultToolkit().getSystemClipboard();
-        StringSelection sel = new StringSelection(text);
-        c.setContents(sel, sel);
+        Transferable sel;
+
+        if (isHtml)
+        {
+            sel = new HtmlFragmentSelection(text);
+        }
+        else
+        {
+            sel = new StringSelection(text);
+        }
+
+        c.setContents(sel, null);
+    }
+
+    protected void setClipboardContent(String text)
+    {
+        setClipboardContent(text, false);
     }
 
     public String getClipboardContent() throws IOException, UnsupportedFlavorException

src/org/labkey/test/util/HtmlFragmentSelection.java

@@ -0,0 +1,45 @@
+package org.labkey.test.util;
+
+import org.jetbrains.annotations.NotNull;
+
+import java.awt.datatransfer.DataFlavor;
+import java.awt.datatransfer.Transferable;
+import java.awt.datatransfer.UnsupportedFlavorException;
+
+/**
+ * Used when you want to put an HTML payload on the clipboard, allowing you to emulate things like copy/pasting from
+ * ELN/Google Docs.
+ */
+public class HtmlFragmentSelection implements Transferable
+{
+    // You might be tempted to add support for DataFlavor.stringFlavor to this class in addition to
+    // DataFlavor.fragmentHtmlFlavor, because that's what the examples show across the Internet do, and that's what the
+    // various AI tools will tell you to do, but it simply doesn't work. If you put a text and HTML payload in the Java
+    // clipboard it will only paste the text, and not the HTML.
+    private static final DataFlavor[] transferDataFlavors = {DataFlavor.fragmentHtmlFlavor};
+    private final String html;
+
+    public HtmlFragmentSelection(String html) {
+        this.html = html;
+    }
+
+    @Override
+    public DataFlavor[] getTransferDataFlavors() {
+        return transferDataFlavors;
+    }
+
+    @Override
+    public boolean isDataFlavorSupported(DataFlavor flavor) {
+        return flavor.equals(DataFlavor.fragmentHtmlFlavor);
+    }
+
+    @Override
+    @NotNull
+    public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException
+    {
+        if (flavor == DataFlavor.fragmentHtmlFlavor) {
+            return html;
+        }
+        throw new UnsupportedFlavorException(flavor);
+    }
+}