From fde94c39429f89ec1f7c0236101963ab0b789e6f Mon Sep 17 00:00:00 2001
From: Pierre-Henri Tournier <tournier@ann.jussieu.fr>
Date: Thu, 5 Dec 2024 17:14:06 +0100
Subject: [PATCH] add copy button for .edp & .md examples

---
 source/_static/css/examples.css |  5 +++++
 source/_static/js/examples.js   | 35 ++++++++++++++++++++++++++++++++-
 source/_templates/layout.html   |  2 +-
 3 files changed, 40 insertions(+), 2 deletions(-)

diff --git a/source/_static/css/examples.css b/source/_static/css/examples.css
index a0f58032..8a0156f7 100644
--- a/source/_static/css/examples.css
+++ b/source/_static/css/examples.css
@@ -16,6 +16,11 @@
   width:100%;
 }
 
+#ExampleCopyButton {
+  display: inline-block;
+  position: relative;
+}
+
 #checkbox-markdown-toggle {
   margin-right: 2em;
 }
diff --git a/source/_static/js/examples.js b/source/_static/js/examples.js
index 5c292db8..5b1be15f 100644
--- a/source/_static/js/examples.js
+++ b/source/_static/js/examples.js
@@ -13,6 +13,8 @@ let viewMarkdown = true
 
 let iscurrentfilemd = false
 
+let mdsource = ""
+
 toggleExamples = (mode) => {
   if (mode) {
     subnav.children[1].style.display = 'block'
@@ -58,12 +60,13 @@ loadExamplefromGitHub = (name, dir, editor) => {
     }
     examplecode.style.display = 'flex'
     examplewelcome.style.display = 'none'
+    showExample(viewMarkdown)
     editor.setValue(data)
     highlightKeyword(editor)
-    showExample(viewMarkdown)
   }
 
   function loadmd(data) {
+    mdsource = data;
     iscurrentfilemd = true;
     var byClass = document.getElementsByClassName("strip-button");
     for (var i = 0; i < byClass.length; i++) {
@@ -331,6 +334,36 @@ fetch('/_static/json/all_examples.json')
     })
   })
 
+var copybutton = document.createElement('button')
+copybutton.className = 'copy-button'
+copybutton.style.top = '0rem'
+copybutton.innerHTML = '<span class="clipboard-message">.edp copied to clipboard</span><i class="far fa-clone"></i>'
+copybutton.onclick = function (e) {
+  const textarea = document.createElement('textarea')
+  if (iscurrentfilemd && viewMarkdown) {
+    copybutton.innerHTML = '<span class="clipboard-message">.md copied to clipboard</span><i class="far fa-clone"></i>'
+    textarea.value = mdsource
+  }
+  else {
+    copybutton.innerHTML = '<span class="clipboard-message">.edp copied to clipboard</span><i class="far fa-clone"></i>'
+    textarea.value = editor.getValue()
+  }
+  textarea.setAttribute('readonly', '')
+  textarea.style.position = 'absolute'
+  textarea.style.left = '-9999px'
+  document.body.appendChild(textarea)
+  textarea.select()
+  document.execCommand('copy')
+  document.body.removeChild(textarea)
+
+  this.children[0].classList.toggle('clipboard-message--active')
+  setTimeout(() => {
+    this.children[0].classList.remove('clipboard-message--active')
+  }, 2000)
+}
+const examplecopybutton = document.getElementById('ExampleCopyButton')
+examplecopybutton.appendChild(copybutton)
+
 var bs1 = new ButtonStrip({
   id: 'buttonStrip1'
 });
diff --git a/source/_templates/layout.html b/source/_templates/layout.html
index ce7addfb..9fbc05e6 100644
--- a/source/_templates/layout.html
+++ b/source/_templates/layout.html
@@ -28,7 +28,7 @@
 				</ul>
 			</div>
 			<div id="exampleCode" spellcheck="false" style="display: none">
-				<h2><div id='ExampleLinkToGitHub'></div><div id='markdowntoggle'></div><!-- input type="checkbox" id="checkbox-markdown-toggle"/> <!-- <span id="exampleSave">Save as EDP</span> --></h2>
+				<h2><div id='ExampleLinkToGitHub'></div><div id='ExampleCopyButton'></div><div id='markdowntoggle'></div><!-- input type="checkbox" id="checkbox-markdown-toggle"/> <!-- <span id="exampleSave">Save as EDP</span> --></h2>
 				<div id="mdout"></div>
 				<textarea id="code"></textarea>
 			</div>