--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/.cms/lib/codemirror/test/contenteditable_test.js	Fri Oct 11 22:40:23 2024 +0000
@@ -0,0 +1,110 @@
+(function() {
+  "use strict";
+
+  namespace = "contenteditable_";
+  var Pos = CodeMirror.Pos
+
+  function findTextNode(dom, text) {
+    if (dom instanceof CodeMirror) dom = dom.getInputField()
+    if (dom.nodeType == 1) {
+      for (var ch = dom.firstChild; ch; ch = ch.nextSibling) {
+        var found = findTextNode(ch, text)
+        if (found) return found
+      }
+    } else if (dom.nodeType == 3 && dom.nodeValue == text) {
+      return dom
+    }
+  }
+
+  function lineElt(node) {
+    for (;;) {
+      var parent = node.parentNode
+      if (/CodeMirror-code/.test(parent.className)) return node
+      node = parent
+    }
+  }
+
+  testCM("insert_text", function(cm) {
+    findTextNode(cm, "foobar").nodeValue = "foo bar"
+    cm.display.input.updateFromDOM()
+    eq(cm.getValue(), "foo bar")
+  }, {inputStyle: "contenteditable", value: "foobar"})
+
+  testCM("split_line", function(cm) {
+    cm.setSelection(Pos(2, 3))
+    var node = findTextNode(cm, "foobar")
+    node.nodeValue = "foo"
+    var lineNode = lineElt(node)
+    lineNode.parentNode.insertBefore(document.createElement("pre"), lineNode.nextSibling).textContent = "bar"
+    cm.display.input.updateFromDOM()
+    eq(cm.getValue(), "one\ntwo\nfoo\nbar\nthree\nfour\n")
+  }, {inputStyle: "contenteditable", value: "one\ntwo\nfoobar\nthree\nfour\n"})
+
+  testCM("join_line", function(cm) {
+    cm.setSelection(Pos(2, 3))
+    var node = findTextNode(cm, "foo")
+    node.nodeValue = "foobar"
+    var lineNode = lineElt(node)
+    lineNode.parentNode.removeChild(lineNode.nextSibling)
+    cm.display.input.updateFromDOM()
+    eq(cm.getValue(), "one\ntwo\nfoobar\nthree\nfour\n")
+  }, {inputStyle: "contenteditable", value: "one\ntwo\nfoo\nbar\nthree\nfour\n"})
+
+  testCM("delete_multiple", function(cm) {
+    cm.setSelection(Pos(1, 3), Pos(4, 0))
+    var text = findTextNode(cm, "two"), startLine = lineElt(text)
+    for (var i = 0; i < 3; i++)
+      startLine.parentNode.removeChild(startLine.nextSibling)
+    text.nodeValue = "twothree"
+    cm.display.input.updateFromDOM()
+    eq(cm.getValue(), "one\ntwothree\nfour\n")
+  }, {inputStyle: "contenteditable", value: "one\ntwo\nfoo\nbar\nthree\nfour\n"})
+
+  testCM("ambiguous_diff_middle", function(cm) {
+    cm.setSelection(Pos(0, 2))
+    findTextNode(cm, "baah").nodeValue = "baaah"
+    cm.display.input.updateFromDOM()
+    eqCharPos(cm.getCursor(), Pos(0, 3))
+  }, {inputStyle: "contenteditable", value: "baah"})
+
+  testCM("ambiguous_diff_start", function(cm) {
+    cm.setSelection(Pos(0, 1))
+    findTextNode(cm, "baah").nodeValue = "baaah"
+    cm.display.input.updateFromDOM()
+    eqCharPos(cm.getCursor(), Pos(0, 2))
+  }, {inputStyle: "contenteditable", value: "baah"})
+
+  testCM("ambiguous_diff_end", function(cm) {
+    cm.setSelection(Pos(0, 3))
+    findTextNode(cm, "baah").nodeValue = "baaah"
+    cm.display.input.updateFromDOM()
+    eqCharPos(cm.getCursor(), Pos(0, 4))
+  }, {inputStyle: "contenteditable", value: "baah"})
+
+  testCM("force_redraw", function(cm) {
+    findTextNode(cm, "foo").parentNode.appendChild(document.createElement("hr")).className = "inserted"
+    cm.display.input.updateFromDOM()
+    eq(byClassName(cm.getInputField(), "inserted").length, 0)
+  }, {inputStyle: "contenteditable", value: "foo"})
+
+  testCM("type_on_empty_line", function(cm) {
+    cm.setSelection(Pos(1, 0))
+    findTextNode(cm, "\u200b").nodeValue += "hello"
+    cm.display.input.updateFromDOM()
+    eq(cm.getValue(), "foo\nhello\nbar")
+  }, {inputStyle: "contenteditable", value: "foo\n\nbar"})
+
+  testCM("type_after_empty_line", function(cm) {
+    cm.setSelection(Pos(2, 0))
+    findTextNode(cm, "bar").nodeValue = "hellobar"
+    cm.display.input.updateFromDOM()
+    eq(cm.getValue(), "foo\n\nhellobar")
+  }, {inputStyle: "contenteditable", value: "foo\n\nbar"})
+
+  testCM("type_before_empty_line", function(cm) {
+    cm.setSelection(Pos(0, 3))
+    findTextNode(cm, "foo").nodeValue = "foohello"
+    cm.display.input.updateFromDOM()
+    eq(cm.getValue(), "foohello\n\nbar")
+  }, {inputStyle: "contenteditable", value: "foo\n\nbar"})
+})();