gecko/toolkit/themes/pinstripe/reftests/nostretch.xul

<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin" type="text/css"?>

<!--
 * This test tests whether you can put different widgets in the same
 * hbox without stretching them, even if you don't set align="center".
 * I.e. prior to the fix that added this patch, having a button and a
 * menulist in the same hbox next to each other would stretch the menulist
 * vertically because the button had such a big vertical margin.
 *
 * The test works like this: Two widgets are placed in a hbox, and the second
 * widget is visibility: hidden. In the reference (nostretch-ref.xul), the
 * second widget is display: none. If test and reference look the same,
 * adding the second widget hasn't affected the appearance of the first widget,
 * and everything's fine.
 * -->
<window title="Stretched controls test"
        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
        xmlns:html="http://www.w3.org/1999/xhtml"
        xmlns:svg="http://www.w3.org/2000/svg"
        orient="vertical"
        class="reftest-wait"
        onload="loaded()">

<html:style><![CDATA[
.regular {
  font: -moz-dialog;
}
.small {
  font: message-box;
}
.spacer {
  height: 40px;
}
.foreground > :nth-child(2) {
  visibility: hidden;
}
]]>
</html:style>

<script type="application/javascript;version=1.8"><![CDATA[

function cE(elem) {
  return document.createElementNS("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul", elem);
}
function elWithValue(elem, val) {
  let e = cE(elem);
  e.setAttribute(elem == "label" || elem == "textbox" ? "value" : "label", val);
  return e;
}

function allPairs(set) {
  let ps = [];
  for(let i = 0; i < set.length; ++i) {
    for (let j = 0; j < set.length; ++j) {
      if (i != j)
        ps.push([set[i], set[j]]);
    }
  }
  return ps;
}

function createLabel(v) elWithValue("label", v)
function createRadio(v) elWithValue("radio", v)
function createCheckbox(v) elWithValue("checkbox", v)
function createButton(v) elWithValue("button", v)
function createTextField(v) elWithValue("textbox", v)
function createMenulist(v) {
  let [list, popup, item] = [cE("menulist"), cE("menupopup"), elWithValue("menuitem", v)];
  item.setAttribute("selected", "true");
  popup.appendChild(item);
  list.appendChild(popup);
  return list;
}
function createEditableMenulist(v) {
  let list = createMenulist(v);
  list.setAttribute("editable", "true");
  return list;
}
function loaded() {
  let template = document.getElementById("template");
  ["regular", "small"].forEach(function(size) {
    let wrapper = document.querySelectorAll("#wrapper > ." + size)[0];
    allPairs([
      createButton, createMenulist, createTextField, createEditableMenulist,
    ]).forEach(function(elemList) {
      let newBox = template.cloneNode(true);
      newBox.className = "spacer";
      let foregroundRow = newBox.firstChild;
      elemList.forEach(function(creator) {
        foregroundRow.appendChild(creator("Label"));
      });
      wrapper.appendChild(newBox);
    });
  });
  document.documentElement.className = "";
}

]]></script>
    <vbox id="template">
      <hbox class="foreground"/>
    </vbox>
  <hbox id="wrapper">
    <vbox class="regular" width="500"/>
    <vbox class="small" flex="1"/>
  </hbox>

  <spacer flex="1"/>

</window>