/** 

 * Test for Bug 493881: Changes to legacy HTML color properties before the BODY is loaded

 * should be ignored. Additionally, after BODY loads, setting any of these properties to undefined 

 * should cause them to be returned as the string "undefined".

 */

SimpleTest.waitForExplicitFinish();

var legacyProps = ["fgColor", "bgColor", "linkColor", "vlinkColor", "alinkColor"];

var testColors = ["blue", "silver", "green", "orange", "red"];

var rgbTestColors = ["rgb(255, 0, 0)", "rgb(192, 192, 192)", "rgb(0, 128, 0)", "rgb(255, 165, 0)", "rgb(255, 0, 0)"];

var idPropList = [ {id: "plaintext", prop: "color"},

                   {id: "body", prop: "background-color"},

                   {id: "nonvisitedlink", prop: "color"},

                   {id: "visitedlink", prop: "color"} ];

var initialValues = [];

function setAndTestProperty(prop, color) {

  var initial = document[prop];

  document[prop] = color;

  is(document[prop], initial, "document[" + prop + "] not ignored before body");

  return initial;

}

/**

 * Attempt to set legacy color properties before BODY exists, and verify that such

 * attempts are ignored.

 */

for (var i = 0; i < legacyProps.length; i++) {

  initialValues[i] = setAndTestProperty(legacyProps[i], testColors[i]);

}

/**

 * After BODY loads, run some more tests.

 */

addLoadEvent( function() {

  // Verify that the legacy color properties still have their original values.

  for (var i = 0; i < legacyProps.length; i++) {

    is(document[legacyProps[i]], initialValues[i], "document[" + legacyProps[i] + "] altered after body load");

  }

  // Verify that legacy color properties applied before BODY are really ignored when rendering.

  // Save current computed style colors for later use.

  for (i = 0; i < idPropList.length; i++) {

    var style = window.getComputedStyle(document.getElementById(idPropList[i].id));

    var color = style.getPropertyValue(idPropList[i].prop);

    idPropList[i].initialComputedColor = color;

    isnot(color, rgbTestColors[i], "element rendered using before-body style");

  }

  // XXX: Can't get links to visually activate via script events, so can't verify

  // that the alinkColor property was not applied.

  // Verify that setting legacy color props to undefined after BODY loads will cause them

  // to be read as the string "undefined".

  for (var i = 0; i < legacyProps.length; i++) {

    document[legacyProps[i]] = undefined;

    is(document[legacyProps[i]], "undefined", 

      "Unexpected value of " + legacyProps[i] + " after setting to undefined");

  }

  // Verify that setting legacy color props to undefined led to result

  // of parsing undefined as a color.

  for (i = 0; i < idPropList.length; i++) {

    var style = window.getComputedStyle(document.getElementById(idPropList[i].id));

    var color = style.getPropertyValue(idPropList[i].prop);

    is(color, "rgb(0, 239, 14)", 

      "element's style should get result of parsing undefined as a color");

  }

  // Mark the test as finished.

  setTimeout(SimpleTest.finish, 0);

});