gecko/layout/xul/test/test_stack.xul

<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css" type="text/css"?>

<window align="start" title="XUL stack tests" onload="runTest()"
        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>

  <!-- a * before an expected value means an offset from the right or bottom edge -->
  <stack id="stack">
    <hbox id="left-top" left="10" top="12" width="20" height="24"
                        expectedleft="10" expectedtop="12" expectedright="30" expectedbottom="36"
                        stackwidth="30" stackheight="36"/>
    <hbox id="start-top" start="10" top="12" width="20" height="24"
                         expectedleft="10" expectedtop="12" expectedright="30" expectedbottom="36"
                         stackwidth="30" stackheight="36"/>
    <hbox id="right-bottom" right="10" bottom="12" width="20" height="24"
                            expectedleft="*30" expectedtop="*36" expectedright="*10" expectedbottom="*12"
                            stackwidth="30" stackheight="36"/>
    <hbox id="end-bottom" end="10" bottom="12" width="20" height="24"
                          expectedleft="*30" expectedtop="*36" expectedright="*10" expectedbottom="*12"
                          stackwidth="30" stackheight="36"/>
    <hbox id="left-bottom" left="18" bottom="15" width="16" height="19"
                           expectedleft="18" expectedtop="*34" expectedright="34" expectedbottom="*15"
                           stackwidth="34" stackheight="34"/>
    <hbox id="start-bottom" start="18" bottom="15" width="16" height="19"
                            expectedleft="18" expectedtop="*34" expectedright="34" expectedbottom="*15"
                            stackwidth="34" stackheight="34"/>
    <hbox id="right-top" right="5" top="8" width="10" height="11"
                         expectedleft="*15" expectedtop="8" expectedright="*5" expectedbottom="19"
                         stackwidth="15" stackheight="19"/>
    <hbox id="end-top" end="5" top="8" width="10" height="11"
                       expectedleft="*15" expectedtop="8" expectedright="*5" expectedbottom="19"
                       stackwidth="15" stackheight="19"/>
    <hbox id="left-right" left="12" right="9" width="15" height="6"
                          expectedleft="12" expectedtop="0" expectedright="*9" expectedbottom="*0"
                          stackwidth="36" stackheight="6"/>
    <hbox id="start-right" start="12" right="9" width="15" height="6"
                           expectedleft="12" expectedtop="0" expectedright="*9" expectedbottom="*0"
                           stackwidth="36" stackheight="6"/>
    <hbox id="left-end" start="12" end="9" width="15" height="6"
                        expectedleft="12" expectedtop="0" expectedright="*9" expectedbottom="*0"
                        stackwidth="36" stackheight="6"/>
    <hbox id="start-end" start="12" end="9" width="15" height="6"
                         expectedleft="12" expectedtop="0" expectedright="*9" expectedbottom="*0"
                         stackwidth="36" stackheight="6"/>
    <hbox id="top-bottom" top="20" bottom="39" width="15" height="6"
                          expectedleft="0" expectedtop="20" expectedright="*0" expectedbottom="*39"
                          stackwidth="15" stackheight="65"/>
    <hbox id="left-right-top-bottom" style="left: 5px; top: 5px; right: 8px; bottom: 8px;"
                                     left="16" top="20" right="20" bottom="35" width="7" height="8"
                                     expectedleft="16" expectedtop="20" expectedright="*20" expectedbottom="*35"
                                     stackwidth="43" stackheight="63"/>
    <hbox id="start-right-top-bottom" style="left: 5px; top: 5px; right: 8px; bottom: 8px;"
                                      start="16" top="20" right="20" bottom="35" width="7" height="8"
                                      expectedleft="16" expectedtop="20" expectedright="*20" expectedbottom="*35"
                                      stackwidth="43" stackheight="63"/>
    <hbox id="left-end-top-bottom" style="left: 5px; top: 5px; right: 8px; bottom: 8px;"
                                   left="16" top="20" end="20" bottom="35" width="7" height="8"
                                   expectedleft="16" expectedtop="20" expectedright="*20" expectedbottom="*35"
                                   stackwidth="43" stackheight="63"/>
    <hbox id="start-end-top-bottom" style="left: 5px; top: 5px; right: 8px; bottom: 8px;"
                                    start="16" top="20" end="20" bottom="35" width="7" height="8"
                                    expectedleft="16" expectedtop="20" expectedright="*20" expectedbottom="*35"
                                    stackwidth="43" stackheight="63"/>
    <hbox id="left-right-top-bottom-nosize" left="16" top="20" right="20" bottom="35"
                                            expectedleft="16" expectedtop="20" expectedright="*20" expectedbottom="*35"
                                            stackwidth="36" stackheight="55"/>
    <hbox id="start-right-top-bottom-nosize" start="16" top="20" right="20" bottom="35"
                                             expectedleft="16" expectedtop="20" expectedright="*20" expectedbottom="*35"
                                             stackwidth="36" stackheight="55"/>
    <hbox id="left-end-top-bottom-nosize" left="16" top="20" end="20" bottom="35"
                                          expectedleft="16" expectedtop="20" expectedright="*20" expectedbottom="*35"
                                          stackwidth="36" stackheight="55"/>
    <hbox id="start-end-top-bottom-nosize" start="16" top="20" end="20" bottom="35"
                                           expectedleft="16" expectedtop="20" expectedright="*20" expectedbottom="*35"
                                           stackwidth="36" stackheight="55"/>
    <hbox id="none" width="10" height="12" expectedleft="0" expectedtop="0" expectedright="*0" expectedbottom="*0"
                    stackwidth="10" stackheight="12"/>
    <hbox id="none-nosize" expectedleft="0" expectedtop="0" expectedright="*0" expectedbottom="*0"
                           stackwidth="0" stackheight="0"/>
    <hbox id="style-left-right-top-bottom"
          style="left: 17px; top: 20px;" right="20" bottom="35" width="7" height="8"
          expectedleft="*27" expectedtop="*43" expectedright="*20" expectedbottom="*35"
          stackwidth="27" stackheight="43"/>
    <hbox id="style-left-right-top-bottom-nosize"
          style="left: 16px; top: 20px; right: 20px; bottom: 35px;"
          expectedleft="0" expectedtop="0" expectedright="*0" expectedbottom="*0"
          stackwidth="0" stackheight="0"/>
    <hbox id="left-large-right" left="20" right="1000" height="6"
          expectedleft="20" expectedtop="0" expectedright="20" expectedbottom="*0"
          stackwidth="1020" stackheight="6"/>
    <hbox id="left-top-with-margin" left="8" top="17" width="20" height="24"
          style="margin: 1px 2px 3px 4px;"
          expectedleft="12" expectedtop="18" expectedright="32" expectedbottom="42"
          stackwidth="34" stackheight="45"/>
    <hbox id="right-bottom-with-margin" right="6" bottom="15" width="10" height="14"
          style="margin: 1px 2px 3px 4px;"
          expectedleft="*18" expectedtop="*32" expectedright="*8" expectedbottom="*18"
          stackwidth="22" stackheight="33"/>
    <hbox id="left-top-right-bottom-with-margin" left="14" right="6" top="8" bottom="15" width="10" height="14"
          style="margin: 1px 2px 3px 4px;"
          expectedleft="18" expectedtop="9" expectedright="*8" expectedbottom="*18"
          stackwidth="36" stackheight="41"/>
    <hbox id="none-with-margin"
          style="margin: 1px 2px 3px 4px;"
          expectedleft="4" expectedtop="1" expectedright="*2" expectedbottom="*3"
          stackwidth="6" stackheight="4"/>
  </stack>

  <stack id="stack-with-size" width="12" height="14">
    <hbox id="left-top-with-stack-size" left="10" top="12" width="20" height="24"
                                        expectedleft="10" expectedtop="12" expectedright="30" expectedbottom="36"/>
  </stack>

  <stack id="stack-with-start-end" width="30">
    <hbox id="start-with-start-end" start="10" top="12" width="20" height="24"
                                    expectedstart="10" expectedend="30"/>
    <hbox id="end-width-start-end" end="5" top="12" width="20" height="24"
                                   expectedstart="5" expectedend="25"/>
    <hbox id="start-end-width-start-end" start="12" end="9" width="20" top="12" height="24"
                                         expectedstart="12" expectedend="21"/>
  </stack>

  <stack id="stack-with-border"
         style="border-left: 4px solid black; border-top: 2px solid black; border-right: 1px solid black; border-bottom: 3px solid black;">
    <hbox id="left-top-with-border" left="10" top="14" width="20" height="24"
                                    expectedleft="14" expectedtop="16" expectedright="34" expectedbottom="40"/>
    <hbox id="start-top-with-border" start="10" top="14" width="20" height="24"
                                     expectedleft="14" expectedtop="16" expectedright="34" expectedbottom="40"/>
    <hbox id="right-bottom-with-border" right="5" bottom="8" width="6" height="10"
                                        expectedleft="*12" expectedtop="*21" expectedright="*6" expectedbottom="*11"/>
    <hbox id="end-bottom-with-border" end="5" bottom="8" width="6" height="10"
                                      expectedleft="*12" expectedtop="*21" expectedright="*6" expectedbottom="*11"/>
    <hbox id="left-top-right-bottom-with-border" left="12" right="5" top="18" bottom="8"
          expectedleft="16" expectedtop="20" expectedright="*6" expectedbottom="*11"/>
    <hbox id="start-top-right-bottom-with-border" start="12" right="5" top="18" bottom="8"
          expectedleft="16" expectedtop="20" expectedright="*6" expectedbottom="*11"/>
    <hbox id="left-top-end-bottom-with-border" left="12" end="5" top="18" bottom="8"
          expectedleft="16" expectedtop="20" expectedright="*6" expectedbottom="*11"/>
    <hbox id="start-top-end-bottom-with-border" start="12" end="5" top="18" bottom="8"
          expectedleft="16" expectedtop="20" expectedright="*6" expectedbottom="*11"/>
    <hbox id="none-with-with-border"
          expectedleft="4" expectedtop="2" expectedright="*1" expectedbottom="*3"/>
  </stack>

  <stack id="stack-dyn"/>
  <stack id="stack-dyn-sized" width="12" height="14"/>

  <body xmlns="http://www.w3.org/1999/xhtml"/>

  <script><![CDATA[
    SimpleTest.waitForExplicitFinish();

    var stackRect;
    var dynStack;

    function compareSide(child, actual, side, dyn, direction)
    {
      var clientRect = child.getBoundingClientRect();
      var vertical = (side == "top" || side == "bottom");
      var expectedval = child.getAttribute("expected" + side);
      if (expectedval.indexOf("*") == 0)
        expectedval = (vertical ? stackRect.bottom : stackRect.right) - Number(expectedval.substring(1));
      else if (direction == "rtl")
        expectedval = (vertical ? stackRect.top : -stackRect.width + clientRect.right + clientRect.left) + Number(expectedval);
      else
        expectedval = (vertical ? stackRect.top : stackRect.left) + Number(expectedval);

      is(actual, expectedval, child.id + " " + side + (dyn ? " dynamic" : ""));
    }

    function runTest()
    {
      runTestForStack("stack", false);
      runTestForStack("stack-with-size", false);
      runTestForStartEndAttributes("stack-with-start-end", "ltr");
      runTestForStartEndAttributes("stack-with-start-end", "rtl");

      var stackWithSize = $("stack-with-size");

      var sizedStackRect = stackWithSize.getBoundingClientRect();
      is(sizedStackRect.width, 30, "stack size stretched width");
      is(sizedStackRect.height, 36, "stack size stretched height");

      // set -moz-stack-sizing: ignore and ensure that the stack does not grow
      // to include the child
      var item = $("left-top-with-stack-size");
      item.style.MozStackSizing = "ignore";
      var parent = item.parentNode;
      parent.removeChild(item);
      parent.appendChild(item);

      sizedStackRect = stackWithSize.getBoundingClientRect();
      is(sizedStackRect.width, 12, "stack size not stretched width");
      is(sizedStackRect.height, 14, "stack size not stretched height");

      testPositionChanges(stackWithSize, true);
      item.style.MozStackSizing = "";
      testPositionChanges(stackWithSize, false);

      // now test adding stack children dynamically to ensure that
      // the size of the stack adjusts accordingly
      dynStack = $("stack-dyn");
      runTestForStack("stack", true);

      SimpleTest.finish();
    }

    function runTestForStartEndAttributes(stackid, aDirection)
    {
      // Change the direction of the layout to RTL to ensure start/end are
      // working as expected
      var stack = $(stackid);
      stack.style.direction = aDirection;

      var stackRect = stack.getBoundingClientRect();
      var children = stack.childNodes;
      for (var c = children.length - 1; c >= 0; c--) {
        var child = children[c];
      
        // do tests only for elements that have a rtl-enabled mode
        if (!child.hasAttribute("start") && !child.hasAttribute("end"))
          continue;

        var childrect = child.getBoundingClientRect();
        compareSide(child, childrect.right, "end", false, aDirection);
        compareSide(child, childrect.left, "start", false, aDirection);
      }

      // Reset the direction
      stack.style.direction = "ltr";
    }

    function runTestForStack(stackid, dyn)
    {
      var stack = $(stackid);
      if (!dyn)
        stackRect = stack.getBoundingClientRect();
      var children = stack.childNodes;
      for (var c = children.length - 1; c >= 0; c--) {
        var child = children[c];
        if (dyn) {
          // for dynamic tests, get the size after appending the child as the
          // stack size will be effected by it
          dynStack.appendChild(child);
          stackRect = dynStack.getBoundingClientRect();
          is(stackRect.width, child.getAttribute("stackwidth"), child.id + " stack width" + (dyn ? " dynamic" : ""));
          is(stackRect.height, child.getAttribute("stackheight"), child.id + " stack height" + (dyn ? " dynamic" : ""));
        }

        var childrect = child.getBoundingClientRect();
        compareSide(child, childrect.left, "left", dyn);
        compareSide(child, childrect.top, "top", dyn);
        compareSide(child, childrect.right, "right", dyn);
        compareSide(child, childrect.bottom, "bottom", dyn);
        if (dyn)
          dynStack.removeChild(child);
      }
    }

    function testPositionChanges(stack, ignoreStackSizing)
    {
      var add = ignoreStackSizing ? " ignore stack sizing" : "";

      // ensure that changing left/top/right/bottom/start/end works
      var stackchild = document.getElementById("left-top-with-stack-size");
      stackchild.left = 18;
      is(stackchild.getBoundingClientRect().left, stack.getBoundingClientRect().left + 18, "left changed" + add);
      is(stack.getBoundingClientRect().width, ignoreStackSizing ? 12 : 38, "left changed stack width" + add);

      stackchild.left = "";
      stackchild.setAttribute("start", "19");
      is(stackchild.getBoundingClientRect().left, stack.getBoundingClientRect().left + 19, "left changed" + add);
      is(stack.getBoundingClientRect().width, ignoreStackSizing ? 12 : 39, "left changed stack width" + add);
      stackchild.removeAttribute("start");
      stackchild.left = 18;

      stackchild.top = 22;
      is(stackchild.getBoundingClientRect().top, stack.getBoundingClientRect().top + 22, "top changed" + add);
      is(stack.getBoundingClientRect().height, ignoreStackSizing ? 14 : 46, "left changed stack height" + add);

      stackchild.setAttribute("right", "6");
      is(stackchild.getBoundingClientRect().right, stack.getBoundingClientRect().left + 18, "right changed" + add);
      // the width is only 12 pixels in ignoreStackSizing mode, so don't check the offset
      // from the right edge in this case
      if (!ignoreStackSizing)
        is(stackchild.getBoundingClientRect().right, stack.getBoundingClientRect().right - 6,
           "right changed from right edge" + add);
      is(stack.getBoundingClientRect().width, ignoreStackSizing ? 12 : 24, "right changed stack width" + add);

      stackchild.removeAttribute("right");
      stackchild.setAttribute("end", "7");
      is(stackchild.getBoundingClientRect().right, stack.getBoundingClientRect().left + 18, "right changed" + add);
      // the width is only 12 pixels in ignoreStackSizing mode, so don't check the offset
      // from the right edge in this case
      if (!ignoreStackSizing)
        is(stackchild.getBoundingClientRect().right, stack.getBoundingClientRect().right - 7,
           "right changed from right edge" + add);
      is(stack.getBoundingClientRect().width, ignoreStackSizing ? 12 : 25, "right changed stack width" + add);
      stackchild.removeAttribute("end");
      stackchild.setAttribute("right", "6");

      stackchild.setAttribute("bottom", "9");
      is(stackchild.getBoundingClientRect().bottom, stack.getBoundingClientRect().top + 22, "bottom changed" + add);
      is(stack.getBoundingClientRect().height, ignoreStackSizing ? 14 : 31, "bottom changed stack height" + add);
      if (!ignoreStackSizing)
        is(stackchild.getBoundingClientRect().bottom, stack.getBoundingClientRect().bottom - 9,
           "right changed from bottom edge" + add);

      stackchild.left = "";
      is(stackchild.getBoundingClientRect().right, stack.getBoundingClientRect().right - 6, "right changed" + add);
      is(stack.getBoundingClientRect().width, ignoreStackSizing ? 12 : 26, "right changed no left stack width" + add);

      stackchild.removeAttribute("right");
      is(stackchild.getBoundingClientRect().right, stack.getBoundingClientRect().right, "right cleared" + add);
      is(stack.getBoundingClientRect().width, 12, "right cleared stack height" + add);

      // reset the values
      stackchild.removeAttribute("bottom");
      stackchild.left = 10;
      stackchild.top = 12;
    }


  ]]></script>
</window>