--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/.cms/lib/codemirror/test/scroll_test.js	Fri Oct 11 22:40:23 2024 +0000
@@ -0,0 +1,126 @@
+(function() {
+  "use strict";
+
+  namespace = "scroll_";
+
+  testCM("bars_hidden", function(cm) {
+    for (var i = 0;; i++) {
+      var wrapBox = cm.getWrapperElement().getBoundingClientRect();
+      var scrollBox = cm.getScrollerElement().getBoundingClientRect();
+      is(wrapBox.bottom < scrollBox.bottom - 10);
+      is(wrapBox.right < scrollBox.right - 10);
+      if (i == 1) break;
+      cm.getWrapperElement().style.height = "auto";
+      cm.refresh();
+    }
+  });
+  
+  function barH(cm) { return byClassName(cm.getWrapperElement(), "CodeMirror-hscrollbar")[0]; }
+  function barV(cm) { return byClassName(cm.getWrapperElement(), "CodeMirror-vscrollbar")[0]; }
+
+  function displayBottom(cm, scrollbar) {
+    if (scrollbar && cm.display.scroller.offsetHeight > cm.display.scroller.clientHeight)
+      return barH(cm).getBoundingClientRect().top;
+    else
+      return cm.getWrapperElement().getBoundingClientRect().bottom - 1;
+  }
+
+  function displayRight(cm, scrollbar) {
+    if (scrollbar && cm.display.scroller.offsetWidth > cm.display.scroller.clientWidth)
+      return barV(cm).getBoundingClientRect().left;
+    else
+      return cm.getWrapperElement().getBoundingClientRect().right - 1;
+  }
+
+  function testMovedownFixed(cm, hScroll) {
+    cm.setSize("100px", "100px");
+    if (hScroll) cm.setValue(new Array(100).join("x"));
+    var bottom = displayBottom(cm, hScroll);
+    for (var i = 0; i < 30; i++) {
+      cm.replaceSelection("x\n");
+      var cursorBottom = cm.cursorCoords(null, "window").bottom;
+      is(cursorBottom <= bottom);
+    }
+    is(cursorBottom >= bottom - 5);
+  }
+
+  testCM("movedown_fixed", function(cm) {testMovedownFixed(cm, false);});
+  testCM("movedown_hscroll_fixed", function(cm) {testMovedownFixed(cm, true);});
+
+  function testMovedownResize(cm, hScroll) {
+    cm.getWrapperElement().style.height = "auto";
+    if (hScroll) cm.setValue(new Array(100).join("x"));
+    cm.refresh();
+    for (var i = 0; i < 30; i++) {
+      cm.replaceSelection("x\n");
+      var bottom = displayBottom(cm, hScroll);
+      var cursorBottom = cm.cursorCoords(null, "window").bottom;
+      is(cursorBottom <= bottom);
+      is(cursorBottom >= bottom - 5);
+    }
+  }
+
+  testCM("movedown_resize", function(cm) {testMovedownResize(cm, false);});
+  testCM("movedown_hscroll_resize", function(cm) {testMovedownResize(cm, true);});
+
+  function testMoveright(cm, wrap, scroll) {
+    cm.setSize("100px", "100px");
+    if (wrap) cm.setOption("lineWrapping", true);
+    if (scroll) {
+      cm.setValue("\n" + new Array(100).join("x\n"));
+      cm.setCursor(Pos(0, 0));
+    }
+    var right = displayRight(cm, scroll);
+    for (var i = 0; i < 10; i++) {
+      cm.replaceSelection("xxxxxxxxxx");
+      var cursorRight = cm.cursorCoords(null, "window").right;
+      is(cursorRight < right);
+    }
+    if (!wrap) is(cursorRight > right - 20);
+  }
+
+  testCM("moveright", function(cm) {testMoveright(cm, false, false);});
+  testCM("moveright_wrap", function(cm) {testMoveright(cm, true, false);});
+  testCM("moveright_scroll", function(cm) {testMoveright(cm, false, true);});
+  testCM("moveright_scroll_wrap", function(cm) {testMoveright(cm, true, true);});
+
+  testCM("suddenly_wide", function(cm) {
+    addDoc(cm, 100, 100);
+    cm.replaceSelection(new Array(600).join("l ") + "\n");
+    cm.execCommand("goLineUp");
+    cm.execCommand("goLineEnd");
+    is(barH(cm).scrollLeft > cm.getScrollerElement().scrollLeft - 1);
+  });
+
+  testCM("wrap_changes_height", function(cm) {
+    var line = new Array(20).join("a ") + "\n";
+    cm.setValue(new Array(20).join(line));
+    var box = cm.getWrapperElement().getBoundingClientRect();
+    cm.setSize(cm.cursorCoords(Pos(0), "window").right - box.left + 2,
+               cm.cursorCoords(Pos(19, 0), "window").bottom - box.top + 2);
+    cm.setCursor(Pos(19, 0));
+    cm.replaceSelection("\n");
+    is(cm.cursorCoords(null, "window").bottom < displayBottom(cm, false));
+  }, {lineWrapping: true});
+
+  testCM("height_auto_with_gutter_expect_no_scroll_after_line_delete", function(cm) {
+    cm.setSize(null, "auto");
+    cm.setValue("x\n");
+    cm.execCommand("goDocEnd");
+    cm.execCommand("delCharBefore");
+    eq(cm.getScrollInfo().top, 0);
+    cm.scrollTo(null, 10);
+    is(cm.getScrollInfo().top < 5);
+  }, {lineNumbers: true});
+
+  testCM("bidi_ensureCursorVisible", function(cm) {
+    cm.setValue("<dd>وضع الاستخدام. عندما لا تعطى، وهذا الافتراضي إلى الطريقة الاولى\n");
+    cm.execCommand("goLineStart");
+    eq(cm.getScrollInfo().left, 0);
+    cm.execCommand("goCharRight");
+    cm.execCommand("goCharRight");
+    cm.execCommand("goCharRight");
+    eqCursorPos(cm.getCursor(), Pos(0, 3, "before"));
+    eq(cm.getScrollInfo().left, 0);
+  }, {lineWrapping: false});
+})();