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Test Info:
/* Any copyright is dedicated to the Public Domain.
"use strict";
// Checking properties orders and overrides in the rule-view.
const TEST_URI = "<style>#testid {}</style><div id='testid'>Styled Node</div>";
add_task(async function () {
await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));
const { inspector, view } = await openRuleView();
await selectNode("#testid", inspector);
const elementStyle = view._elementStyle;
const elementRule = elementStyle.rules[1];
info("Checking rules insertion order and checking the applied style");
const firstProp = await addProperty(view, 1, "background-color", "green");
let secondProp = await addProperty(view, 1, "background-color", "blue");
is(elementRule.textProps[0], firstProp, "Rules should be in addition order.");
is(
elementRule.textProps[1],
secondProp,
"Rules should be in addition order."
);
// rgb(0, 0, 255) = blue
is(
await getValue("#testid", "background-color"),
"rgb(0, 0, 255)",
"Second property should have been used."
);
info("Removing the second property and checking the applied style again");
await removeProperty(view, secondProp);
// rgb(0, 128, 0) = green
is(
await getValue("#testid", "background-color"),
"rgb(0, 128, 0)",
"After deleting second property, first should be used."
);
info(
"Creating a new second property and checking that the insertion order " +
"is still the same"
);
secondProp = await addProperty(view, 1, "background-color", "blue");
is(
await getValue("#testid", "background-color"),
"rgb(0, 0, 255)",
"New property should be used."
);
is(
elementRule.textProps[0],
firstProp,
"Rules shouldn't have switched places."
);
is(
elementRule.textProps[1],
secondProp,
"Rules shouldn't have switched places."
);
info("Disabling the second property and checking the applied style");
await togglePropStatus(view, secondProp);
is(
await getValue("#testid", "background-color"),
"rgb(0, 128, 0)",
"After disabling second property, first value should be used"
);
info("Disabling the first property too and checking the applied style");
await togglePropStatus(view, firstProp);
is(
await getValue("#testid", "background-color"),
"rgba(0, 0, 0, 0)",
"After disabling both properties, value should be empty."
);
info("Re-enabling the second propertyt and checking the applied style");
await togglePropStatus(view, secondProp);
is(
await getValue("#testid", "background-color"),
"rgb(0, 0, 255)",
"Value should be set correctly after re-enabling"
);
info(
"Re-enabling the first property and checking the insertion order " +
"is still respected"
);
await togglePropStatus(view, firstProp);
is(
await getValue("#testid", "background-color"),
"rgb(0, 0, 255)",
"Re-enabling an earlier property shouldn't make it override " +
"a later property."
);
is(
elementRule.textProps[0],
firstProp,
"Rules shouldn't have switched places."
);
is(
elementRule.textProps[1],
secondProp,
"Rules shouldn't have switched places."
);
info("Modifying the first property and checking the applied style");
await setProperty(view, firstProp, "purple");
is(
await getValue("#testid", "background-color"),
"rgb(0, 0, 255)",
"Modifying an earlier property shouldn't override a later property."
);
});
async function getValue(selector, propName) {
const value = await getComputedStyleProperty(selector, null, propName);
return value;
}