editor/libeditor/tests/test_nsIHTMLEditor_getSelectedElement.html

   1 <!DOCTYPE>
   2 <html>
   3 <head>
   4   <title>Test for nsIHTMLEditor.getSelectedElement()</title>
   5   <script src="/tests/SimpleTest/SimpleTest.js"></script>
   6   <script src="/tests/SimpleTest/EventUtils.js"></script>
   7   <link rel="stylesheet" href="/tests/SimpleTest/test.css">
   8 </head>
   9 <body>
  10 <div id="display">
  11 </div>
  12 <div id="content" contenteditable></div>
  13 <img src="green.png"><!-- necessary to load this image before start testing -->
  14 <pre id="test">
  15 </pre>
  16
  17 <script class="testbody" type="application/javascript">
  18
  19 SimpleTest.waitForExplicitFinish();
  20 SimpleTest.waitForFocus(async function() {
  21   let editor = document.getElementById("content");
  22   let selection = window.getSelection();
  23
  24   // nsIHTMLEditor.getSelectedElement() is probably designed to retrieve
  25   // a[href]:not([href=""]), a[name]:not([name=""]), or void element like
  26   // <img> element.  When user selects usual inline elements with dragging,
  27   // double-clicking, Gecko sets start and/or end to point in text nodes
  28   // as far as possible.  Therefore, this API users don't expect that this
  29   // returns usual inline elements like <b> element.
  30
  31   // So, we need to check user's operation works fine.
  32   for (let eatSpaceToNextWord of [true, false]) {
  33     await SpecialPowers.pushPrefEnv({"set": [["layout.word_select.eat_space_to_next_word", eatSpaceToNextWord]]});
  34
  35     editor.innerHTML = "<p>This <b>is</b> an <i>example </i>text.<br></p>" +
  36                        "<p>and an image <img src=\"green.png\"> is here.</p>" +
  37                        "<p>An anchor with href attr <a href=\"about:blank\">is</a> here.</p>";
  38     editor.focus();
  39     editor.scrollTop; // flush layout.
  40
  41     let b = editor.firstChild.firstChild.nextSibling;
  42     let i = b.nextSibling.nextSibling;
  43     let img = editor.firstChild.nextSibling.firstChild.nextSibling;
  44     let href = editor.firstChild.nextSibling.nextSibling.firstChild.nextSibling;
  45
  46     // double clicking usual inline element shouldn't cause "selecting" the element.
  47     synthesizeMouseAtCenter(b, {clickCount: 1});
  48     synthesizeMouseAtCenter(b, {clickCount: 2});
  49     is(selection.getRangeAt(0).startContainer, b.previousSibling,
  50        `#0-1 Double-clicking in <b> element should set start of selection to end of previous text node (eat_space_to_next_word: ${eatSpaceToNextWord})`);
  51     is(selection.getRangeAt(0).startOffset, b.previousSibling.length,
  52        `#0-1 Double-clicking in <b> element should set start of selection to end of previous text node (eat_space_to_next_word: ${eatSpaceToNextWord})`);
  53     is(selection.getRangeAt(0).endContainer, b.nextSibling,
  54        `#0-1 Double-clicking in <b> element should set end of selection to start of next text node (eat_space_to_next_word: ${eatSpaceToNextWord})`);
  55     is(selection.getRangeAt(0).endOffset, eatSpaceToNextWord ? 1 : 0,
  56        `#0-1 Double-clicking in <b> element should set end of selection to start of next text node (eat_space_to_next_word: ${eatSpaceToNextWord})`);
  57
  58     is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
  59        null,
  60        `#0-1 nsIHTMLEditor::getSelectedElement(\"\") should return null after double-clicking in <b> element (eat_space_to_next_word: ${eatSpaceToNextWord})`);
  61
  62     synthesizeMouseAtCenter(i, {clickCount: 1});
  63     synthesizeMouseAtCenter(i, {clickCount: 2});
  64     is(selection.getRangeAt(0).startContainer, i.previousSibling,
  65        `#0-2 Double-clicking in <i> element should set start of selection to end of previous text node (eat_space_to_next_word: ${eatSpaceToNextWord})`);
  66     is(selection.getRangeAt(0).startOffset, i.previousSibling.length,
  67        `#0-2 Double-clicking in <i> element should set start of selection to end of previous text node (eat_space_to_next_word: ${eatSpaceToNextWord})`);
  68     if (eatSpaceToNextWord) {
  69       is(selection.getRangeAt(0).endContainer, i.nextSibling,
  70          "#0-2 Double-clicking in <i> element should set end of selection to start of next text node (eat_space_to_next_word: true)");
  71       is(selection.getRangeAt(0).endOffset, 0,
  72          "#0-2 Double-clicking in <i> element should set end of selection to start of next text node (eat_space_to_next_word: true)");
  73     } else {
  74       is(selection.getRangeAt(0).endContainer, i.firstChild,
  75          "#0-2 Double-clicking in <i> element should set end of selection to end of the word in <i> (eat_space_to_next_word: false)");
  76       is(selection.getRangeAt(0).endOffset, "example".length,
  77          "#0-2 Double-clicking in <i> element should set end of selection to end of the word in <i> (eat_space_to_next_word: false)");
  78     }
  79
  80     is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
  81        null,
  82        `#0-2 nsIHTMLEditor::getSelectedElement(\"\") should return null after double-clicking in <b> element (eat_space_to_next_word: ${eatSpaceToNextWord})`);
  83
  84     // Both clicking and double-clicking on <img> element should "select" it.
  85     synthesizeMouseAtCenter(img, {clickCount: 1});
  86     is(selection.getRangeAt(0).startContainer, img.parentElement,
  87        `#0-3 Clicking in <img> element should set start of selection to the <img> element (eat_space_to_next_word: ${eatSpaceToNextWord})`);
  88     is(selection.getRangeAt(0).startOffset, 1,
  89        `#0-3 Clicking in <img> element should set start of selection to the <img> element (eat_space_to_next_word: ${eatSpaceToNextWord})`);
  90     is(selection.getRangeAt(0).endContainer, img.parentElement,
  91        `#0-3 Clicking in <img> element should set end of selection to start of next text node (eat_space_to_next_word: ${eatSpaceToNextWord})`);
  92     is(selection.getRangeAt(0).endOffset, 2,
  93        `#0-3 Clicking in <img> element should set end of selection to start of next text node (eat_space_to_next_word: ${eatSpaceToNextWord})`);
  94
  95     is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
  96        img,
  97        `#0-3 nsIHTMLEditor::getSelectedElement(\"\") should return the <img> element after clicking in it (eat_space_to_next_word: ${eatSpaceToNextWord})`);
  98
  99     synthesizeMouseAtCenter(img, {clickCount: 1});
 100     synthesizeMouseAtCenter(img, {clickCount: 2});
 101     is(selection.getRangeAt(0).startContainer, img.parentElement,
 102        `#0-4 Double-clicking in <img> element should set start of selection to the <img> element (eat_space_to_next_word: ${eatSpaceToNextWord})`);
 103     is(selection.getRangeAt(0).startOffset, 1,
 104        `#0-4 Double-clicking in <img> element should set start of selection to the <img> element (eat_space_to_next_word: ${eatSpaceToNextWord})`);
 105     is(selection.getRangeAt(0).endContainer, img.parentElement,
 106        `#0-4 Double-clicking in <img> element should set end of selection to start of next text node (eat_space_to_next_word: ${eatSpaceToNextWord})`);
 107     is(selection.getRangeAt(0).endOffset, 2,
 108        `#0-4 Double-clicking in <img> element should set end of selection to start of next text node (eat_space_to_next_word: ${eatSpaceToNextWord})`);
 109
 110     is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 111        img,
 112        `#0-4 nsIHTMLEditor::getSelectedElement(\"\") should return the <img> element after double-clicking in it (eat_space_to_next_word: ${eatSpaceToNextWord})`);
 113
 114     // Puts caret into the <a href> element.
 115     synthesizeMouseAtCenter(href, {clickCount: 1});
 116     is(selection.getRangeAt(0).startContainer, href.firstChild,
 117        `#0-5 Clicking in <a href> element should set start of selection to the text node in it (eat_space_to_next_word: ${eatSpaceToNextWord})`);
 118     is(selection.isCollapsed, true,
 119        `#0-5 Clicking in <a href> element should cause collapsing Selection (eat_space_to_next_word: ${eatSpaceToNextWord})`);
 120
 121     is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 122        null,
 123        `#0-5 nsIHTMLEditor::getSelectedElement(\"\") should return null after clicking in the <a href> element (eat_space_to_next_word: ${eatSpaceToNextWord})`);
 124     is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 125        href,
 126        `#0-5 nsIHTMLEditor::getSelectedElement(\"href\") should return the <a href> element after clicking in it (eat_space_to_next_word: ${eatSpaceToNextWord})`);
 127
 128     // Selects the <a href> element with a triple-click.
 129     synthesizeMouseAtCenter(href, {clickCount: 1});
 130     synthesizeMouseAtCenter(href, {clickCount: 2});
 131     synthesizeMouseAtCenter(href, {clickCount: 3});
 132     is(selection.getRangeAt(0).startContainer, href.parentElement,
 133        `#0-6 Triple-clicking in <a href> element should set start of selection to the element (eat_space_to_next_word: ${eatSpaceToNextWord})`);
 134     is(selection.getRangeAt(0).startOffset, 1,
 135        `#0-6 Triple-clicking in <a href> element should set start of selection to the element (eat_space_to_next_word: ${eatSpaceToNextWord})`);
 136     is(selection.getRangeAt(0).endContainer, href.parentElement,
 137        `#0-6 Triple-clicking in <a href> element should set end of selection to start of next <br> element (eat_space_to_next_word: ${eatSpaceToNextWord})`);
 138     is(selection.getRangeAt(0).endOffset, 2,
 139        `#0-6 Triple-clicking in <a href> element should set end of selection to start of next <br> element (eat_space_to_next_word: ${eatSpaceToNextWord})`);
 140
 141     is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 142        href,
 143        `#0-6 nsIHTMLEditor::getSelectedElement(\"\") should return the <a href> element after double-clicking in it (eat_space_to_next_word: ${eatSpaceToNextWord})`);
 144     is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 145        href,
 146        `#0-6 nsIHTMLEditor::getSelectedElement(\"href\") should return the <a href> element after double-clicking in it (eat_space_to_next_word: ${eatSpaceToNextWord})`);
 147   }
 148
 149   editor.innerHTML = "<p>p1<b>b1</b><i>i1</i></p>";
 150   editor.focus();
 151
 152   // <p>[]p1...
 153   let range = document.createRange();
 154   range.setStart(editor.firstChild.firstChild, 0);
 155   range.setEnd(editor.firstChild.firstChild, 0);
 156   selection.removeAllRanges();
 157   selection.addRange(range);
 158
 159   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 160      null,
 161      "#1-1 nsIHTMLEditor::getSelectedElement(\"\") should return null when selection is collapsed in a text node");
 162
 163   // <p>[p1]<b>...
 164   range = document.createRange();
 165   range.setStart(editor.firstChild.firstChild, 0);
 166   range.setEnd(editor.firstChild.firstChild, 2);
 167   selection.removeAllRanges();
 168   selection.addRange(range);
 169
 170   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 171      null,
 172      "#1-2 nsIHTMLEditor::getSelectedElement(\"\") should return null when selection ends in a text node");
 173
 174   // <p>[p1<b>]b1</b>...
 175   range = document.createRange();
 176   range.setStart(editor.firstChild.firstChild, 0);
 177   range.setEnd(editor.firstChild.firstChild.nextSibling.firstChild, 0);
 178   selection.removeAllRanges();
 179   selection.addRange(range);
 180
 181   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 182      null,
 183      "#1-3 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection ends at start of text node in <b> element");
 184   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("b")),
 185      null,
 186      "#1-3 nsIHTMLEditor::getSelectedElement(\"b\") should return null when Selection ends at start of text node in <b> element");
 187   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("i")),
 188      editor.firstChild.nextSibling,
 189      "#1-3 nsIHTMLEditor::getSelectedElement(\"i\") should return the <b> element when Selection ends at start of text node in <b> element");
 190
 191   // <p>[p1<b>b1]</b>...
 192   range = document.createRange();
 193   range.setStart(editor.firstChild.firstChild, 0);
 194   range.setEnd(editor.firstChild.firstChild.nextSibling.firstChild, 2);
 195   selection.removeAllRanges();
 196   selection.addRange(range);
 197
 198   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 199      null,
 200      "#1-4 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection ends at end of text node in a text node");
 201   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("b")),
 202      null,
 203      "#1-4 nsIHTMLEditor::getSelectedElement(\"b\") should return null when Selection ends at end of text node in a text node");
 204   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("i")),
 205      editor.firstChild.nextSibling,
 206      "#1-4 nsIHTMLEditor::getSelectedElement(\"i\") should return the <b> element when Selection ends at end of text node in <b> element");
 207
 208   // <p>[p1}<b>b1...
 209   range = document.createRange();
 210   range.setStart(editor.firstChild.firstChild, 0);
 211   range.setEnd(editor.firstChild.firstChild.nextSibling, 0);
 212   selection.removeAllRanges();
 213   selection.addRange(range);
 214
 215   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 216      null,
 217      "#1-5 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection ends at text node and there are no elements");
 218   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("b")),
 219      null,
 220      "#1-5 nsIHTMLEditor::getSelectedElement(\"b\") should return null when Selection ends at text node and there are no elements");
 221   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("i")),
 222      null,
 223      "#1-5 nsIHTMLEditor::getSelectedElement(\"i\") should return null when Selection ends at text node and there are no elements");
 224
 225   // <p>p1<b>{b1}</b>...
 226   range = document.createRange();
 227   range.setStart(editor.firstChild.firstChild.nextSibling, 0);
 228   range.setEnd(editor.firstChild.firstChild.nextSibling, 1);
 229   selection.removeAllRanges();
 230   selection.addRange(range);
 231
 232   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 233      null,
 234      "#1-6 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection only selects a text node");
 235   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("b")),
 236      null,
 237      "#1-6 nsIHTMLEditor::getSelectedElement(\"b\") should return null when Selection only selects a text node");
 238   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("i")),
 239      null,
 240      "#1-6 nsIHTMLEditor::getSelectedElement(\"i\") should return null when Selection only selects a text node");
 241
 242   // <p>[p1<b>b1</b>}<i>...
 243   range = document.createRange();
 244   range.setStart(editor.firstChild.firstChild, 0);
 245   range.setEnd(editor.firstChild, 2);
 246   selection.removeAllRanges();
 247   selection.addRange(range);
 248
 249   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 250      null,
 251      "#1-7 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection ends the <b> element but starts from the previous text node");
 252   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("b")),
 253      null,
 254      "#1-7 nsIHTMLEditor::getSelectedElement(\"b\") should return null when Selection ends the <b> element but starts from the previous text node");
 255   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("i")),
 256      null,
 257      "#1-7 nsIHTMLEditor::getSelectedElement(\"i\") should return null when Selection ends the <b> element but starts from the previous text node");
 258   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 259      null,
 260      "#1-7 nsIHTMLEditor::getSelectedElement(\"href\") should return null when Selection ends the <b> element but starts from the previous text node");
 261   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("anchor")),
 262      null,
 263      "#1-7 nsIHTMLEditor::getSelectedElement(\"anchor\") should return null when Selection ends the <b> element but starts from the previous text node");
 264   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("namedanchor")),
 265      null,
 266      "#1-7 nsIHTMLEditor::getSelectedElement(\"namedanchor\") should return null when Selection ends the <b> element but starts from the previous text node");
 267
 268   // <p>[p1<b>b1</b><i>i1</i>}...
 269   range = document.createRange();
 270   range.setStart(editor.firstChild.firstChild, 0);
 271   range.setEnd(editor.firstChild, 3);
 272   selection.removeAllRanges();
 273   selection.addRange(range);
 274
 275   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 276      null,
 277      "#1-8 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection includes 2 elements and starts from previous text node");
 278   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("b")),
 279      null,
 280      "#1-8 nsIHTMLEditor::getSelectedElement(\"b\") should return null when Selection includes 2 elements and starts from previous text node");
 281   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("i")),
 282      null,
 283      "#1-8 nsIHTMLEditor::getSelectedElement(\"i\") should return null when Selection includes 2 elements and starts from previous text node");
 284   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 285      null,
 286      "#1-8 nsIHTMLEditor::getSelectedElement(\"href\") should null when Selection includes 2 elements and starts from previous text node");
 287   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("anchor")),
 288      null,
 289      "#1-8 nsIHTMLEditor::getSelectedElement(\"anchor\") should return null when Selection includes 2 elements and starts from previous text node");
 290   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("namedanchor")),
 291      null,
 292      "#1-8 nsIHTMLEditor::getSelectedElement(\"namedanchor\") should return null when Selection includes 2 elements and starts from previous text node");
 293
 294   // <p>p1{<b>b1</b>}<i>i1</i>...
 295   // Note that this won't happen with user operation since Gecko sets
 296   // start and end of Selection to points in text nodes as far as possible.
 297   range = document.createRange();
 298   range.setStart(editor.firstChild, 1);
 299   range.setEnd(editor.firstChild, 2);
 300   selection.removeAllRanges();
 301   selection.addRange(range);
 302
 303   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 304      editor.firstChild.firstChild.nextSibling,
 305      "#1-9 nsIHTMLEditor::getSelectedElement(\"\") should return <b> element when only it is selected and matched");
 306   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("b")),
 307      editor.firstChild.firstChild.nextSibling,
 308      "#1-9 nsIHTMLEditor::getSelectedElement(\"b\") should return <b> element when only it is selected and matched");
 309   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("i")),
 310      null,
 311      "#1-9 nsIHTMLEditor::getSelectedElement(\"i\") should return null when only a <b> element is selected but it is unmatched");
 312   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 313      null,
 314      "#1-9 nsIHTMLEditor::getSelectedElement(\"href\") should return null when only a <b> element is selected but it is unmatched");
 315   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("anchor")),
 316      null,
 317      "#1-9 nsIHTMLEditor::getSelectedElement(\"anchor\") should return null when only a <b> element is selected but it is unmatched");
 318   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("namedanchor")),
 319      null,
 320      "#1-9 nsIHTMLEditor::getSelectedElement(\"namedanchor\") should return when only a <b> element is selected but it is unmatched");
 321
 322   // <p>p1<b>b1</b>{<i>i1</i>}</p>...
 323   range = document.createRange();
 324   range.setStart(editor.firstChild, 2);
 325   range.setEnd(editor.firstChild, 3);
 326   selection.removeAllRanges();
 327   selection.addRange(range);
 328
 329   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 330      editor.firstChild.firstChild.nextSibling.nextSibling,
 331      "#1-10 nsIHTMLEditor::getSelectedElement(\"\") should return <i> element when only it is selected and matched");
 332   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("b")),
 333      null,
 334      "#1-10 nsIHTMLEditor::getSelectedElement(\"b\") should return null when only an <i> element is selected but it is unmatched");
 335   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("i")),
 336      editor.firstChild.firstChild.nextSibling.nextSibling,
 337      "#1-10 nsIHTMLEditor::getSelectedElement(\"i\") should return <i> element when only it is selected and matched");
 338   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 339      null,
 340      "#1-10 nsIHTMLEditor::getSelectedElement(\"href\") should return null when only an <i> element is selected but it is unmatched");
 341   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("anchor")),
 342      null,
 343      "#1-10 nsIHTMLEditor::getSelectedElement(\"anchor\") should return null when only an <i> element is selected but it is unmatched");
 344   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("namedanchor")),
 345      null,
 346      "#1-10 nsIHTMLEditor::getSelectedElement(\"namedanchor\") should return null when only an <i> element is selected but it is unmatched");
 347
 348   // <p>{p1}<b>b1</b><i>...
 349   range = document.createRange();
 350   range.setStart(editor.firstChild, 0);
 351   range.setEnd(editor.firstChild, 1);
 352   selection.removeAllRanges();
 353   selection.addRange(range);
 354
 355   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 356      null,
 357      "#1-11 nsIHTMLEditor::getSelectedElement(\"\") should return null when only a text node is selected");
 358   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("b")),
 359      null,
 360      "#1-11 nsIHTMLEditor::getSelectedElement(\"b\") should return null when only a text node is selected");
 361   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("i")),
 362      null,
 363      "#1-11 nsIHTMLEditor::getSelectedElement(\"i\") should return null when only a text node is selected");
 364   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 365      null,
 366      "#1-11 nsIHTMLEditor::getSelectedElement(\"href\") should return null when only a text node is selected");
 367   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("anchor")),
 368      null,
 369      "#1-11 nsIHTMLEditor::getSelectedElement(\"anchor\") should return null when only a text node is selected");
 370   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("namedanchor")),
 371      null,
 372      "#1-11 nsIHTMLEditor::getSelectedElement(\"namedanchor\") should return null when only a text node is selected");
 373
 374   editor.innerHTML = "<p>p1<b>b1</b><b>b2</b><b>b3</b></p>";
 375   editor.focus();
 376
 377   // <p>p1<b>b[1</b><b>b2</b><b>b]3</b>...
 378   range = document.createRange();
 379   range.setStart(editor.firstChild.firstChild.nextSibling.firstChild, 1);
 380   range.setEnd(editor.firstChild.firstChild.nextSibling.nextSibling.nextSibling.firstChild, 1);
 381   selection.removeAllRanges();
 382   selection.addRange(range);
 383
 384   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 385      null,
 386      "#2-1 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection is across 3 <b> elements");
 387   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("b")),
 388      null,
 389      "#2-1 nsIHTMLEditor::getSelectedElement(\"b\") should return null when Selection is across 3 <b> elements");
 390   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("i")),
 391      null,
 392      "#2-1 nsIHTMLEditor::getSelectedElement(\"i\") should return null when Selection is across 3 <b> elements");
 393
 394   // <p>p[1<b>b1</b><b>b2</b><b>b]3</b>...
 395   range = document.createRange();
 396   range.setStart(editor.firstChild.firstChild, 1);
 397   range.setEnd(editor.firstChild.firstChild.nextSibling.nextSibling.nextSibling.firstChild, 1);
 398   selection.removeAllRanges();
 399   selection.addRange(range);
 400
 401   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 402      null,
 403      "#2-2 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection is across 3 <b> elements and previous text node");
 404   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("b")),
 405      null,
 406      "#2-2 nsIHTMLEditor::getSelectedElement(\"b\") should return null when Selection is across 3 <b> elements and previous text node");
 407   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("i")),
 408      null,
 409      "#2-2 nsIHTMLEditor::getSelectedElement(\"i\") should return null when Selection is across 3 <b> elements and previous text node");
 410
 411   editor.innerHTML = "<p>p1<b>b1<b>b2<b>b3</b></b></b>p2</p>";
 412   editor.focus();
 413
 414   // <p>p1<b>b[1<b>b1-2<b>b]1-3</b>...
 415   range = document.createRange();
 416   range.setStart(editor.firstChild.firstChild.nextSibling.firstChild, 1);
 417   range.setEnd(editor.firstChild.firstChild.nextSibling.firstChild.nextSibling.firstChild.nextSibling.firstChild, 1);
 418   selection.removeAllRanges();
 419   selection.addRange(range);
 420
 421   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 422      null,
 423      "#3-1 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection is across 3 <b> elements which are nested");
 424   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("b")),
 425      null,
 426      "#3-1 nsIHTMLEditor::getSelectedElement(\"b\") should return null when Selection is across 3 <b> elements which are nested");
 427   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("i")),
 428      null,
 429      "#3-1 nsIHTMLEditor::getSelectedElement(\"i\") should return null when Selection is across 3 <b> elements which are nested");
 430
 431   // <p>p[1<b>b1<b>b1-2<b>b]1-3</b>...
 432   range = document.createRange();
 433   range.setStart(editor.firstChild.firstChild, 1);
 434   range.setEnd(editor.firstChild.firstChild.nextSibling.firstChild.nextSibling.firstChild.nextSibling.firstChild, 1);
 435   selection.removeAllRanges();
 436   selection.addRange(range);
 437
 438   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 439      null,
 440      "#3-2 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection is across a text node and 3 <b> elements which are nested");
 441   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("b")),
 442      null,
 443      "#3-2 nsIHTMLEditor::getSelectedElement(\"b\") should return null when Selection is across a text node and 3 <b> elements which are nested");
 444   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("i")),
 445      null,
 446      "#3-2 nsIHTMLEditor::getSelectedElement(\"i\") should return null when Selection is across a text node and 3 <b> elements which are nested");
 447
 448   // <p>p1<b>b1<b>b1-2<b>b[1-3</b></b></b>p]2...
 449   range = document.createRange();
 450   range.setStart(editor.firstChild.firstChild.nextSibling.firstChild.nextSibling.firstChild.nextSibling.firstChild, 1);
 451   range.setEnd(editor.firstChild.firstChild.nextSibling.nextSibling, 1);
 452   selection.removeAllRanges();
 453   selection.addRange(range);
 454
 455   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 456      null,
 457      "#3-3 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection is across 3 <b> elements which are nested and following text node");
 458   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("b")),
 459      null,
 460      "#3-3 nsIHTMLEditor::getSelectedElement(\"b\") should return null when Selection is across 3 <b> elements which are nested and following text node");
 461   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("i")),
 462      null,
 463      "#3-3 nsIHTMLEditor::getSelectedElement(\"i\") should return null when Selection is across 3 <b> elements which are nested and following text node");
 464
 465   editor.innerHTML = "<p><b>b1</b><a href=\"about:blank\">a1</a><a href=\"about:blank\">a2</a><a name=\"foo\">a3</a><b>b2</b></p>";
 466   editor.focus();
 467
 468   // <p><b>b1</b>{<a href="...">a1</a>}<a href="...">a2...
 469   // Note that this won't happen with user operation since Gecko sets
 470   // start and end of Selection to points in text nodes as far as possible.
 471   range = document.createRange();
 472   range.setStart(editor.firstChild, 1);
 473   range.setEnd(editor.firstChild, 2);
 474   selection.removeAllRanges();
 475   selection.addRange(range);
 476
 477   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 478      editor.firstChild.firstChild.nextSibling,
 479      "#4-1 nsIHTMLEditor::getSelectedElement(\"\") should return the first <a> element when only it is selected and matched");
 480   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 481      editor.firstChild.firstChild.nextSibling,
 482      "#4-1 nsIHTMLEditor::getSelectedElement(\"href\") should return the first <a> element when only it is selected and matched");
 483   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("anchor")),
 484      null,
 485      "#4-1 nsIHTMLEditor::getSelectedElement(\"anchor\") should return null when the first <a> element is selected but it is unmatched");
 486   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("namedanchor")),
 487      null,
 488      "#4-1 nsIHTMLEditor::getSelectedElement(\"namedanchor\") should return null when the first <a> element is selected but it is unmatched");
 489
 490   // <p><b>b1</b><a href="...">a[]1</a><a href="...">a2...
 491   range = document.createRange();
 492   range.setStart(editor.firstChild.firstChild.nextSibling.firstChild, 1);
 493   range.setEnd(editor.firstChild.firstChild.nextSibling.firstChild, 1);
 494   selection.removeAllRanges();
 495   selection.addRange(range);
 496
 497   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 498      null,
 499      "#4-2 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection is collapsed");
 500   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 501      editor.firstChild.firstChild.nextSibling,
 502      "#4-2 nsIHTMLEditor::getSelectedElement(\"href\") should return the first <a> element when Selection is collapsed in the element");
 503   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("anchor")),
 504      null,
 505      "#4-2 nsIHTMLEditor::getSelectedElement(\"anchor\") should return null when Selection is collapsed");
 506   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("namedanchor")),
 507      null,
 508      "#4-2 nsIHTMLEditor::getSelectedElement(\"namedanchor\") should return null when Selection is collapsed");
 509
 510   // <p><b>b1</b><a href="...">a[1]</a><a href="...">a2...
 511   range = document.createRange();
 512   range.setStart(editor.firstChild.firstChild.nextSibling.firstChild, 1);
 513   range.setEnd(editor.firstChild.firstChild.nextSibling.firstChild, 2);
 514   selection.removeAllRanges();
 515   selection.addRange(range);
 516
 517   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 518      null,
 519      "#4-3 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection is in a text node");
 520   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 521      editor.firstChild.firstChild.nextSibling,
 522      "#4-3 nsIHTMLEditor::getSelectedElement(\"href\") should return the first <a> element when Selection is in the element");
 523   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("anchor")),
 524      null,
 525      "#4-3 nsIHTMLEditor::getSelectedElement(\"anchor\") should return null when Selection is in a text node");
 526   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("namedanchor")),
 527      null,
 528      "#4-3 nsIHTMLEditor::getSelectedElement(\"namedanchor\") should return null when Selection is in a text node");
 529
 530   // <p><b>b1</b><a href="...">a[1</a><a href="...">a]2...
 531   range = document.createRange();
 532   range.setStart(editor.firstChild.firstChild.nextSibling.firstChild, 1);
 533   range.setEnd(editor.firstChild.firstChild.nextSibling.nextSibling.firstChild, 1);
 534   selection.removeAllRanges();
 535   selection.addRange(range);
 536
 537   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 538      null,
 539      "#4-4 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection crosses 2 <a> elements");
 540   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 541      null,
 542      "#4-4 nsIHTMLEditor::getSelectedElement(\"href\") should return null when Selection crosses 2 <a> elements");
 543   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("anchor")),
 544      null,
 545      "#4-4 nsIHTMLEditor::getSelectedElement(\"anchor\") should return null when Selection crosses 2 <a> elements");
 546   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("namedanchor")),
 547      null,
 548      "#4-4 nsIHTMLEditor::getSelectedElement(\"namedanchor\") should return null when Selection crosses 2 <a> elements");
 549
 550   // <p><b>b1</b><a href="...">a1</a><a href="...">a2</a>{<a name="...">a3</a>}<b>b2</b></p>
 551   // Note that this won't happen with user operation since Gecko sets
 552   // start and end of Selection to points in text nodes as far as possible.
 553   range = document.createRange();
 554   range.setStart(editor.firstChild, 3);
 555   range.setEnd(editor.firstChild, 4);
 556   selection.removeAllRanges();
 557   selection.addRange(range);
 558
 559   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 560      editor.firstChild.firstChild.nextSibling.nextSibling.nextSibling,
 561      "#4-5 nsIHTMLEditor::getSelectedElement(\"\") should return the third <a> element when only it is selected and matched");
 562   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 563      null,
 564      "#4-5 nsIHTMLEditor::getSelectedElement(\"href\") should return null when the third <a> element is selected but it is unmatched");
 565   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("anchor")),
 566      editor.firstChild.firstChild.nextSibling.nextSibling.nextSibling,
 567      "#4-5 nsIHTMLEditor::getSelectedElement(\"anchor\") should return the third <a> element when only it is selected and matched");
 568   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("namedanchor")),
 569      null,
 570      "#4-5 nsIHTMLEditor::getSelectedElement(\"namedanchor\") should return null when the third <a> element is selected but it is unmatched");
 571
 572   // <p><b>b1</b><a href="...">a1</a><a href="...">a2</a><a name="...">a[]3</a><b>b2</b></p>
 573   range = document.createRange();
 574   range.setStart(editor.firstChild.firstChild.nextSibling.nextSibling.nextSibling.firstChild, 1);
 575   range.setEnd(editor.firstChild.firstChild.nextSibling.nextSibling.nextSibling.firstChild, 1);
 576   selection.removeAllRanges();
 577   selection.addRange(range);
 578
 579   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 580      null,
 581      "#4-6 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection is collapsed in a text node even in named anchor element");
 582   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 583      null,
 584      "#4-6 nsIHTMLEditor::getSelectedElement(\"href\") should return null when Selection is collapsed in a text node even in named anchor element");
 585   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("anchor")),
 586      null,
 587      "#4-6 nsIHTMLEditor::getSelectedElement(\"anchor\") should return null when Selection is collapsed in a text node even in named anchor element");
 588   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("namedanchor")),
 589      null,
 590      "#4-6 nsIHTMLEditor::getSelectedElement(\"namedanchor\") should return null when Selection is collapsed in a text node even in named anchor element");
 591
 592   editor.innerHTML = "<p>p1<b>b1</b>p1</p>";
 593   editor.focus();
 594
 595   // <p>p1[<b>b1</b>]p1</p>
 596   // This is usual case that user selects <b> element with dragging or double-clicking.
 597   range = document.createRange();
 598   range.setStart(editor.firstChild.firstChild, 2);
 599   range.setEnd(editor.firstChild.firstChild.nextSibling.nextSibling, 0);
 600   selection.removeAllRanges();
 601   selection.addRange(range);
 602
 603   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 604      null,
 605      "#5-1 nsIHTMLEditor::getSelectedElement(\"\") should return null even when Selection starts from end of preceding text node and ends at start or following text node of <b> element");
 606   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 607      null,
 608      "#5-1 nsIHTMLEditor::getSelectedElement(\"href\") should return null even when Selection starts from end of preceding text node and ends at start or following text node of <b> element");
 609   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("anchor")),
 610      null,
 611      "#5-1 nsIHTMLEditor::getSelectedElement(\"anchor\") should return null even when Selection starts from end of preceding text node and ends at start or following text node of <b> element");
 612
 613   // <p>p[1<b>b1</b>]p1</p>
 614   range = document.createRange();
 615   range.setStart(editor.firstChild.firstChild, 1);
 616   range.setEnd(editor.firstChild.firstChild.nextSibling.nextSibling, 0);
 617   selection.removeAllRanges();
 618   selection.addRange(range);
 619
 620   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 621      null,
 622      "#5-2 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection ends at start of following text node of <b> element");
 623   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 624      null,
 625      "#5-2 nsIHTMLEditor::getSelectedElement(\"href\") should return null when Selection ends at start of following text node of <b> element");
 626   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("anchor")),
 627      null,
 628      "#5-2 nsIHTMLEditor::getSelectedElement(\"anchor\") should return null when Selection ends at start of following text node of <b> element");
 629
 630   // <p>p1[<b>b1</b>p]1</p>
 631   range = document.createRange();
 632   range.setStart(editor.firstChild.firstChild, 2);
 633   range.setEnd(editor.firstChild.firstChild.nextSibling.nextSibling, 1);
 634   selection.removeAllRanges();
 635   selection.addRange(range);
 636
 637   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 638      null,
 639      "#5-3 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection starts from end of following text node of <b> element");
 640   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 641      null,
 642      "#5-3 nsIHTMLEditor::getSelectedElement(\"href\") should return null when Selection starts from at end of following text node of <b> element");
 643   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("anchor")),
 644      null,
 645      "#5-3 nsIHTMLEditor::getSelectedElement(\"anchor\") should return null when Selection starts from end of following text node of <b> element");
 646
 647   // <p>p1<b>[b1</b>]p1</p>
 648   range = document.createRange();
 649   range.setStart(editor.firstChild.firstChild.nextSibling.firstChild, 0);
 650   range.setEnd(editor.firstChild.firstChild.nextSibling.nextSibling, 0);
 651   selection.removeAllRanges();
 652   selection.addRange(range);
 653
 654   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 655      null,
 656      "#5-4 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection starts from start of text node in <b> element and ends at start of following text node of <b> element");
 657   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 658      null,
 659      "#5-4 nsIHTMLEditor::getSelectedElement(\"href\") should return null when Selection starts from start of text node in <b> element and ends at start of following text node of <b> element");
 660   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("anchor")),
 661      null,
 662      "#5-4 nsIHTMLEditor::getSelectedElement(\"anchor\") should return null when Selection starts from start of text node in <b> element and ends at start of following text node of <b> element");
 663
 664   // <p>p1[<b>b1]</b>p1</p>
 665   range = document.createRange();
 666   range.setStart(editor.firstChild.firstChild, 2);
 667   range.setEnd(editor.firstChild.firstChild.nextSibling.firstChild, 2);
 668   selection.removeAllRanges();
 669   selection.addRange(range);
 670
 671   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 672      null,
 673      "#5-5 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection starts from end of preceding text node of <b> element and ends at end of text node in <b> element");
 674   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 675      null,
 676      "#5-5 nsIHTMLEditor::getSelectedElement(\"href\") should return null when Selection starts from end of preceding text node of <b> element and ends at end of text node in <b> element");
 677   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("anchor")),
 678      null,
 679      "#5-5 nsIHTMLEditor::getSelectedElement(\"anchor\") should return null when Selection starts from end of preceding text node of <b> element and ends at end of text node in <b> element");
 680
 681   // <p>p1<b>b[1</b>}p1</p>
 682   range = document.createRange();
 683   range.setStart(editor.firstChild.firstChild.nextSibling.firstChild, 1);
 684   range.setEnd(editor.firstChild, 2);
 685   selection.removeAllRanges();
 686   selection.addRange(range);
 687
 688   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 689      editor.firstChild.firstChild.nextSibling,
 690      "#5-6 nsIHTMLEditor::getSelectedElement(\"\") should the <b> element when Selection starts from in the <b> element's text node and end of preceding text node of <b> element and ends at end of the <b> element");
 691   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 692      null,
 693      "#5-6 nsIHTMLEditor::getSelectedElement(\"href\") should return null when Selection starts from in the <b> element's text node and end of preceding text node of <b> element and ends at end of the <b> element");
 694   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("anchor")),
 695      null,
 696      "#5-6 nsIHTMLEditor::getSelectedElement(\"anchor\") should return null when Selection starts from in the <b> element's text node and end of preceding text node of <b> element and ends at end of the <b> element");
 697
 698   editor.innerHTML = "<p>p1<b>b1</b></p>";
 699   editor.focus();
 700
 701   // <p>p1[<b>b1</b>}</p>
 702   // This is usual case of double-clicking in the <b> element.
 703   range = document.createRange();
 704   range.setStart(editor.firstChild.firstChild, 2);
 705   range.setEnd(editor.firstChild, 2);
 706   selection.removeAllRanges();
 707   selection.addRange(range);
 708
 709   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 710      null,
 711      "#6-1 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection starts from previous text node of <b> element and end at end of <b> element");
 712   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 713      null,
 714      "#6-1 nsIHTMLEditor::getSelectedElement(\"href\") should return null when Selection starts from previous text node of <b> element and end at end of <b> element");
 715   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("anchor")),
 716      null,
 717      "#6-1 nsIHTMLEditor::getSelectedElement(\"anchor\") should return null when Selection starts from previous text node of <b> element and end at end of <b> element");
 718
 719   editor.innerHTML = "<p><b>b1</b>p1</p>";
 720   editor.focus();
 721
 722   // <p><b>[b1</b>]p1</p>
 723   // This is usual case of double-clicking in the <b> element.
 724   range = document.createRange();
 725   range.setStart(editor.firstChild.firstChild.firstChild, 0);
 726   range.setEnd(editor.firstChild.firstChild.nextSibling, 0);
 727   selection.removeAllRanges();
 728   selection.addRange(range);
 729
 730   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 731      null,
 732      "#7-1 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection starts from a text node in <b> element and ends at start of following text node");
 733   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 734      null,
 735      "#7-1 nsIHTMLEditor::getSelectedElement(\"href\") should return null when Selection starts from a text node in <b> element and ends at start of following text node");
 736   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("anchor")),
 737      null,
 738      "#7-1 nsIHTMLEditor::getSelectedElement(\"anchor\") should return null when Selection starts from a text node in <b> element and ends at start of following text node");
 739
 740   editor.innerHTML = "<p>p1<b>b1</b><br></p>";
 741   editor.focus();
 742
 743   // <p>p1[<b>b1</b>}<br></p>
 744   // This is usual case of double-clicking in the <b> element.
 745   range = document.createRange();
 746   range.setStart(editor.firstChild.firstChild, 2);
 747   range.setEnd(editor.firstChild, 2);
 748   selection.removeAllRanges();
 749   selection.addRange(range);
 750
 751   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 752      null,
 753      "#8-1 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection starts from previous text node of <b> element and ends before the following <br> element");
 754   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 755      null,
 756      "#8-1 nsIHTMLEditor::getSelectedElement(\"href\") should return null when Selection starts from previous text node of <b> element and ends before the following <br> element");
 757   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("anchor")),
 758      null,
 759      "#8-1 nsIHTMLEditor::getSelectedElement(\"anchor\") should return null when Selection starts from previous text node of <b> element and ends before the following <br> element");
 760
 761
 762   editor.innerHTML = "<p><b>b1</b><br></p>";
 763   editor.focus();
 764
 765   // <p><b>[b1</b>}<br></p>
 766   // This is usual case of double-clicking in the <b> element.
 767   range = document.createRange();
 768   range.setStart(editor.firstChild.firstChild.firstChild, 0);
 769   range.setEnd(editor.firstChild, 1);
 770   selection.removeAllRanges();
 771   selection.addRange(range);
 772
 773   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 774      null,
 775      "#9-1 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection starts from a text node in <b> element and ends before the following <br> element");
 776   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 777      null,
 778      "#9-1 nsIHTMLEditor::getSelectedElement(\"href\") should return null when Selection starts from a text node in <b> element and ends before the following <br> element");
 779   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("anchor")),
 780      null,
 781      "#9-1 nsIHTMLEditor::getSelectedElement(\"anchor\") should return null when Selection starts from a text node in <b> element and ends before the following <br> element");
 782
 783   editor.innerHTML = "<p><b>b1</b><b><br></b><b>b2</b></p>";
 784   editor.focus();
 785
 786   // <p><b>[b1</b><b>}<br></b><b>b2</b></p>
 787   // This is usual case of double-clicking in the first <b> element.
 788   range = document.createRange();
 789   range.setStart(editor.firstChild.firstChild.firstChild, 0);
 790   range.setEnd(editor.firstChild.firstChild.nextSibling, 0);
 791   selection.removeAllRanges();
 792   selection.addRange(range);
 793
 794   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("")),
 795      null,
 796      "#10-1 nsIHTMLEditor::getSelectedElement(\"\") should return null when Selection starts from a text node in <b> element and ends before the following <br> element in another <b> element");
 797   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("href")),
 798      null,
 799      "#10-1 nsIHTMLEditor::getSelectedElement(\"href\") should return null when Selection starts from a text node in <b> element and ends before the following <br> element in another <b> element");
 800   is(SpecialPowers.unwrap(getHTMLEditor().getSelectedElement("anchor")),
 801      null,
 802      "#10-1 nsIHTMLEditor::getSelectedElement(\"anchor\") should return null when Selection starts from a text node in <b> element and ends before the following <br> element in another <b> element");
 803
 804   SimpleTest.finish();
 805 });
 806
 807 function getHTMLEditor() {
 808   var Ci = SpecialPowers.Ci;
 809   var editingSession = SpecialPowers.wrap(window).docShell.editingSession;
 810   return editingSession.getEditorForWindow(window).QueryInterface(Ci.nsIHTMLEditor);
 811 }
 812
 813 </script>
 814 </body>
 815
 816 </html>