bring remote assets to local

web/lib/codemirror5-scrollPastEnd.js

@@ -0,0 +1,48 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: https://codemirror.net/5/LICENSE
+
+(function(mod) {
+  if (typeof exports == "object" && typeof module == "object") // CommonJS
+    mod(require("../../lib/codemirror"));
+  else if (typeof define == "function" && define.amd) // AMD
+    define(["../../lib/codemirror"], mod);
+  else // Plain browser env
+    mod(CodeMirror);
+})(function(CodeMirror) {
+  "use strict";
+
+  CodeMirror.defineOption("scrollPastEnd", false, function(cm, val, old) {
+    if (old && old != CodeMirror.Init) {
+      cm.off("change", onChange);
+      cm.off("refresh", updateBottomMargin);
+      cm.display.lineSpace.parentNode.style.paddingBottom = "";
+      cm.state.scrollPastEndPadding = null;
+    }
+    if (val) {
+      cm.on("change", onChange);
+      cm.on("refresh", updateBottomMargin);
+      updateBottomMargin(cm);
+    }
+  });
+
+  function onChange(cm, change) {
+    if (CodeMirror.changeEnd(change).line == cm.lastLine())
+      updateBottomMargin(cm);
+  }
+
+  function updateBottomMargin(cm) {
+    var padding = "";
+    if (cm.lineCount() > 1) {
+      var totalH = cm.display.scroller.clientHeight - 30,
+          lastLineH = cm.getLineHandle(cm.lastLine()).height;
+      padding = (totalH - lastLineH) + "px";
+    }
+    if (cm.state.scrollPastEndPadding != padding) {
+      cm.state.scrollPastEndPadding = padding;
+      cm.display.lineSpace.parentNode.style.paddingBottom = padding;
+      cm.off("refresh", updateBottomMargin);
+      cm.setSize();
+      cm.on("refresh", updateBottomMargin);
+    }
+  }
+});