Removed the Requirement to Install Python and NodeJS (Now Bundled with Borealis)

Dependencies/Python/Doc/html/_static/copybutton.js

@@ -0,0 +1,92 @@
+// ``function*`` denotes a generator in JavaScript, see
+// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/function*
+function* getHideableCopyButtonElements(rootElement) {
+    // yield all elements with the "go" (Generic.Output),
+    // "gp" (Generic.Prompt), or "gt" (Generic.Traceback) CSS class
+    for (const el of rootElement.querySelectorAll('.go, .gp, .gt')) {
+        yield el
+    }
+    // tracebacks (.gt) contain bare text elements that need to be
+    // wrapped in a span to hide or show the element
+    for (let el of rootElement.querySelectorAll('.gt')) {
+        while ((el = el.nextSibling) && el.nodeType !== Node.DOCUMENT_NODE) {
+            // stop wrapping text nodes when we hit the next output or
+            // prompt element
+            if (el.nodeType === Node.ELEMENT_NODE && el.matches(".gp, .go")) {
+                break
+            }
+            // if the node is a text node with content, wrap it in a
+            // span element so that we can control visibility
+            if (el.nodeType === Node.TEXT_NODE && el.textContent.trim()) {
+                const wrapper = document.createElement("span")
+                el.after(wrapper)
+                wrapper.appendChild(el)
+                el = wrapper
+            }
+            yield el
+        }
+    }
+}
+
+
+const loadCopyButton = () => {
+    /* Add a [>>>] button in the top-right corner of code samples to hide
+     * the >>> and ... prompts and the output and thus make the code
+     * copyable. */
+    const hide_text = "Hide the prompts and output"
+    const show_text = "Show the prompts and output"
+
+    const button = document.createElement("span")
+    button.classList.add("copybutton")
+    button.innerText = ">>>"
+    button.title = hide_text
+    button.dataset.hidden = "false"
+    const buttonClick = event => {
+        // define the behavior of the button when it's clicked
+        event.preventDefault()
+        const buttonEl = event.currentTarget
+        const codeEl = buttonEl.nextElementSibling
+        if (buttonEl.dataset.hidden === "false") {
+            // hide the code output
+            for (const el of getHideableCopyButtonElements(codeEl)) {
+                el.hidden = true
+            }
+            buttonEl.title = show_text
+            buttonEl.dataset.hidden = "true"
+        } else {
+            // show the code output
+            for (const el of getHideableCopyButtonElements(codeEl)) {
+                el.hidden = false
+            }
+            buttonEl.title = hide_text
+            buttonEl.dataset.hidden = "false"
+        }
+    }
+
+    const highlightedElements = document.querySelectorAll(
+        ".highlight-python .highlight,"
+        + ".highlight-python3 .highlight,"
+        + ".highlight-pycon .highlight,"
+        + ".highlight-pycon3 .highlight,"
+        + ".highlight-default .highlight"
+    )
+
+    // create and add the button to all the code blocks that contain >>>
+    highlightedElements.forEach(el => {
+        el.style.position = "relative"
+
+        // if we find a console prompt (.gp), prepend the (deeply cloned) button
+        const clonedButton = button.cloneNode(true)
+        // the onclick attribute is not cloned, set it on the new element
+        clonedButton.onclick = buttonClick
+        if (el.querySelector(".gp") !== null) {
+            el.prepend(clonedButton)
+        }
+    })
+}
+
+if (document.readyState !== "loading") {
+    loadCopyButton()
+} else {
+    document.addEventListener("DOMContentLoaded", loadCopyButton)
+}