devtools/server/tests/chrome/test_styles-modify.html

   1 <!DOCTYPE HTML>
   2 <html>
   3 <!--
   4 https://bugzilla.mozilla.org/show_bug.cgi?id=
   5 -->
   6 <head>
   7   <meta charset="utf-8">
   8   <title>Test for Bug </title>
   9
  10   <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
  11   <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css">
  12   <script type="application/javascript" src="inspector-helpers.js"></script>
  13   <script type="application/javascript">
  14 "use strict";
  15
  16 const {isCssPropertyKnown} = require("devtools/server/actors/css-properties");
  17
  18 window.onload = function() {
  19   SimpleTest.waitForExplicitFinish();
  20   runNextTest();
  21 };
  22
  23 var gWalker = null;
  24 var gStyles = null;
  25 var gInspectee = null;
  26
  27 addAsyncTest(async function setup() {
  28   const url = document.getElementById("inspectorContent").href;
  29
  30   const { target, doc } = await attachURL(url);
  31   const inspector = await target.getFront("inspector");
  32   gInspectee = doc;
  33
  34   gWalker = inspector.walker;
  35   gStyles = await inspector.getPageStyle();
  36
  37   runNextTest();
  38 });
  39
  40 addAsyncTest(async function modifyProperties() {
  41   const localNode = gInspectee.querySelector("#inheritable-rule-inheritable-style");
  42
  43   const node = await gWalker.querySelector(gWalker.rootNode,
  44     "#inheritable-rule-inheritable-style");
  45
  46   const applied = await gStyles.getApplied(node,
  47     { inherited: false, filter: "user" });
  48
  49   const elementStyle = applied[0].rule;
  50   is(elementStyle.cssText, localNode.style.cssText, "Got expected css text");
  51
  52   // Change an existing property...
  53   await setProperty(elementStyle, 0, "color", "black");
  54   // Create a new property
  55   await setProperty(elementStyle, 1, "background-color", "green");
  56
  57   // Create a new property and then change it immediately.
  58   await setProperty(elementStyle, 2, "border", "1px solid black");
  59   await setProperty(elementStyle, 2, "border", "2px solid black");
  60
  61   is(elementStyle.cssText,
  62      "color: black; background-color: green; border: 2px solid black;",
  63      "Should have expected cssText");
  64   is(elementStyle.cssText, localNode.style.cssText,
  65      "Local node and style front match.");
  66
  67   // Remove all the properties
  68   await removeProperty(elementStyle, 0, "color");
  69   await removeProperty(elementStyle, 0, "background-color");
  70   await removeProperty(elementStyle, 0, "border");
  71
  72   is(elementStyle.cssText, "", "Should have expected cssText");
  73   is(elementStyle.cssText, localNode.style.cssText,
  74      "Local node and style front match.");
  75
  76   runNextTest();
  77 });
  78
  79 async function setProperty(rule, index, name, value) {
  80   const changes = rule.startModifyingProperties(isCssPropertyKnown);
  81   changes.setProperty(index, name, value);
  82   await changes.apply();
  83 }
  84
  85 async function removeProperty(rule, index, name) {
  86   const changes = rule.startModifyingProperties(isCssPropertyKnown);
  87   changes.removeProperty(index, name);
  88   await changes.apply();
  89 }
  90
  91 addTest(function cleanup() {
  92   gStyles = null;
  93   gWalker = null;
  94   gInspectee = null;
  95   runNextTest();
  96 });
  97
  98   </script>
  99 </head>
 100 <body>
 101 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=">Mozilla Bug </a>
 102 <a id="inspectorContent" target="_blank" href="inspector-styles-data.html">Test Document</a>
 103 <p id="display"></p>
 104 <div id="content" style="display: none">
 105
 106 </div>
 107 <pre id="test">
 108 </pre>
 109 </body>
 110 </html>