DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Mercurial (b6057e17f856)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213
<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=816720
-->
<head>
  <title>Test for Bug 816720</title>
  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  <style type="text/css" id="style"></style>
</head>
<body>

<pre id="test"></pre>

<p><span id=control-serif>........</span></p>
<p><span id=control-monospace>........</span></p>
<p><span id=test-font>........</span></p>

<style id=other-styles>
  #test { font-size: 16px; animation: test 1s both }
  #control-serif { font: 16px serif }
  #test-font { font: 16px UnlikelyFontName, serif }
</style>

<script type="application/javascript">

// Monospace fonts available on all the platforms we're testing on.
//
// XXX Once bug 817220 is fixed we could instead use the value of
// font.name.monospace.x-western as the monospace font to use.
var MONOSPACE_FONTS = [
  "Courier",
  "Courier New",
  "Monaco",
  "DejaVu Sans Mono",
  "Droid Sans Mono"
];

var test = document.getElementById("test");
var controlSerif = document.getElementById("control-serif");
var controlMonospace = document.getElementById("control-monospace");
var testFont = document.getElementById("test-font");
var otherStyles = document.getElementById("other-styles");

otherStyles.sheet.insertRule("#control-monospace { font: 16px " +
                             MONOSPACE_FONTS + ", serif }", 0);

var monospaceWidth = controlMonospace.getBoundingClientRect().width;
var serifWidth = controlSerif.getBoundingClientRect().width;

// [at-rule type, passing condition, failing condition]
var outerRuleInfo = [
  ["@media", "all", "not all"],
  ["@-moz-document", "url-prefix('')", "url-prefix('zzz')"],
  ["@supports", "(color: green)", "(unknown: unknown)"]
];

// [rule, function to test whether the rule was successfully inserted and applied]
var innerRuleInfo = [
  ["#test { text-decoration: underline; }",
   function(aApplied, aParent, aException) {
     return !aException &&
            window.getComputedStyle(test, "").textDecoration ==
               (aApplied ? "underline" : "none");
   }],
  ["@page { margin: 4cm; }",
   function(aApplied, aParent, aException) {
     // just test whether it threw
     return !aException;
   }],
  ["@keyframes test { from { font-size: 100px; } to { font-size: 100px; } }",
   function(aApplied, aParent, aException) {
     return !aException &&
            window.getComputedStyle(test, "").fontSize ==
                (aApplied ? "100px" : "16px")
   }],
  ["@font-face { font-family: UnlikelyFontName; src: " +
     MONOSPACE_FONTS.map(function(s) { return "local('" + s + "')" }).join(", ") + "; }",
   function(aApplied, aParent, aException) {
     var width = testFont.getBoundingClientRect().width;
     if (aException) {
       return false;
     }
     if (navigator.oscpu.match(/Linux/) ||
         navigator.oscpu.match(/Android/) ||
         SpecialPowers.Services.appinfo.name == "B2G") {
       return true;
    }
    return Math.abs(width - (aApplied ? monospaceWidth : serifWidth)) <= 1; // bug 769194 prevents local()
                                             // fonts working on Android
   }],
  ["@charset 'UTF-8';",
   function(aApplied, aParent, aException) {
     // just test whether it threw
     return aParent instanceof CSSRule ? aException : !aException;
   }],
  ["@import url(nothing.css);",
   function(aApplied, aParent, aException) {
     // just test whether it threw
     return aParent instanceof CSSRule ? aException : !aException;
   }],
  ["@namespace test url(http://example.org);",
   function(aApplied, aParent, aException) {
     // just test whether it threw
     return aParent instanceof CSSRule ? aException : !aException;
   }],
];

function runTest()
{
  // First, assert that our assumed available fonts are indeed available
  // and have expected metrics.
  ok(monospaceWidth > 0, "monospace text has width");
  ok(serifWidth > 0, "serif text has width");
  ok(Math.abs(monospaceWidth - serifWidth) > 1, "monospace and serif text have sufficiently different widths");

  // And that the #test-font element starts off using the "serif" font.
  var initialFontTestWidth = testFont.getBoundingClientRect().width;
  is(initialFontTestWidth, serifWidth);

  // We construct a style sheet with zero, one or two levels of conditional
  // grouping rules (taken from outerRuleInfo), with one of the inner rules
  // at the deepest level.
  var style = document.getElementById("style");

  // For each of the outer rule types...
  for (var outerRule1 = 0; outerRule1 < outerRuleInfo.length; outerRule1++) {
    // For each of { 0 = don't create an outer rule,
    //               1 = create an outer rule with a passing condition,
    //               2 = create an outer rule with a failing condition }...
    for (var outerRuleCondition1 = 0; outerRuleCondition1 <= 2; outerRuleCondition1++) {

      // For each of the outer rule types again...
      for (var outerRule2 = 0; outerRule2 < outerRuleInfo.length; outerRule2++) {
        // For each of { 0 = don't create an outer rule,
        //               1 = create an outer rule with a passing condition,
        //               2 = create an outer rule with a failing condition } again...
        for (var outerRuleCondition2 = 0; outerRuleCondition2 <= 2; outerRuleCondition2++) {

          // For each of the inner rule types...
          for (var innerRule = 0; innerRule < innerRuleInfo.length; innerRule++) {

            // Clear rules
            var object = style.sheet;
            while (object.cssRules.length) {
              object.deleteRule(0);
            }

            // We'll record whether the inner rule should have been applied,
            // according to whether we put passing or failing conditional
            // grouping rules around it.
            var applied = true;

            if (outerRuleCondition1) {
              // Create an outer conditional rule.
              object.insertRule([outerRuleInfo[outerRule1][0],
                                 outerRuleInfo[outerRule1][outerRuleCondition1],
                                 "{}"].join(" "), 0);
              object = object.cssRules[0];

              if (outerRuleCondition1 == 2) {
                // If we used a failing condition, we don't expect the inner
                // rule to be applied.
                applied = false;
              }
            }

            if (outerRuleCondition2) {
              // Create another outer conditional rule as a child of the first
              // outer conditional rule (or the style sheet, if we didn't create
              // a first outer conditional rule).
              object.insertRule([outerRuleInfo[outerRule2][0],
                                 outerRuleInfo[outerRule2][outerRuleCondition2],
                                 "{}"].join(" "), 0);
              object = object.cssRules[0];

              if (outerRuleCondition2 == 2) {
                // If we used a failing condition, we don't expect the inner
                // rule to be applied.
                applied = false;
              }
            }

            var outer = object instanceof CSSRule ? object.cssText : "style sheet";
            var inner = innerRuleInfo[innerRule][0];

            // Insert the inner rule.
            var exception = null;
            try {
              object.insertRule(inner, 0);
            } catch (e) {
              exception = e;
            }

            ok(innerRuleInfo[innerRule][1](applied, object, exception),
               "<" + [outerRule1, outerRuleCondition1, outerRule2,
                      outerRuleCondition2, innerRule].join(",") + "> " +
               "inserting " + inner + " into " + outer.replace(/ *\n */g, ' '));
          }
        }
      }
    }
  }

  SimpleTest.finish();
}

SimpleTest.waitForExplicitFinish();
runTest();
</script>
</body>
</html>