third_party/WebKit/LayoutTests/editing/selection/stay-in-textarea.html

   1 <!DOCTYPE HTML>
   2 <html>
   3 <body>
   4 <script src="../../resources/js-test.js"></script>
   5
   6 <p id="before">Before</p>
   7 <textarea id="textarea">Text</textarea>
   8 <p id="after">After</p>
   9
  10 <div id="console"></div>
  11 <script>
  12 description("Ensure that extending a selection beyond a textarea does not escape outside its shadow root.");
  13
  14 var before = document.getElementById("before");
  15 var after = document.getElementById("after");
  16 var textarea = document.getElementById("textarea");
  17
  18 textarea.setSelectionRange(0, 2);
  19 var textareaSelection = internals.youngestShadowRoot(textarea).getSelection();
  20 var initialTextareaFocusNode = textareaSelection.focusNode;
  21
  22 var initialFocusNode = window.getSelection().focusNode;
  23 var initialFocusOffset = window.getSelection().focusOffset;
  24
  25 shouldBe("textareaSelection.focusOffset", "2");
  26
  27 textareaSelection.modify("extend", "forward", "character");
  28 shouldBe("textareaSelection.focusNode", "initialTextareaFocusNode");
  29 shouldBe("textareaSelection.focusOffset", "3");
  30
  31 textareaSelection.modify("extend", "forward", "character");
  32 shouldBe("textareaSelection.focusNode", "initialTextareaFocusNode");
  33 shouldBe("textareaSelection.focusOffset", "4");
  34
  35 // We're at the end - none of these should modify the selection any more.
  36
  37 textareaSelection.modify("extend", "forward", "character");
  38 shouldBe("textareaSelection.focusNode", "initialTextareaFocusNode");
  39 shouldBe("textareaSelection.focusOffset", "4");
  40
  41 textareaSelection.modify("extend", "forward", "word");
  42 shouldBe("textareaSelection.focusNode", "initialTextareaFocusNode");
  43 shouldBe("textareaSelection.focusOffset", "4");
  44
  45 textareaSelection.modify("extend", "forward", "line");
  46 shouldBe("textareaSelection.focusNode", "initialTextareaFocusNode");
  47 shouldBe("textareaSelection.focusOffset", "4");
  48
  49 shouldBe("window.getSelection().focusNode", "initialFocusNode");
  50 shouldBe("window.getSelection().focusOffset", "initialFocusOffset");
  51
  52 </script>
  53
  54 </body>
  55 </html>