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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
const { GeckoViewActorChild } = ChromeUtils.importESModule(
"resource://gre/modules/GeckoViewActorChild.sys.mjs"
);
const EXPORTED_SYMBOLS = ["TestSupportChild"];
class TestSupportChild extends GeckoViewActorChild {
receiveMessage(aMsg) {
debug`receiveMessage: ${aMsg.name}`;
switch (aMsg.name) {
case "FlushApzRepaints":
return new Promise(resolve => {
const repaintDone = () => {
debug`APZ flush done`;
Services.obs.removeObserver(repaintDone, "apz-repaints-flushed");
resolve();
};
Services.obs.addObserver(repaintDone, "apz-repaints-flushed");
if (this.contentWindow.windowUtils.flushApzRepaints()) {
debug`Flushed APZ repaints, waiting for callback...`;
} else {
debug`Flushing APZ repaints was a no-op, triggering callback directly...`;
repaintDone();
}
});
case "PromiseAllPaintsDone":
return new Promise(resolve => {
const window = this.contentWindow;
const utils = window.windowUtils;
function waitForPaints() {
// Wait until paint suppression has ended
if (utils.paintingSuppressed) {
dump`waiting for paint suppression to end...`;
window.setTimeout(waitForPaints, 0);
return;
}
if (utils.isMozAfterPaintPending) {
dump`waiting for paint...`;
window.addEventListener("MozAfterPaint", waitForPaints, {
once: true,
});
return;
}
resolve();
}
waitForPaints();
});
case "GetLinkColor": {
const { selector } = aMsg.data;
const element = this.document.querySelector(selector);
if (!element) {
throw new Error("No element for " + selector);
}
const color =
this.contentWindow.windowUtils.getVisitedDependentComputedStyle(
element,
"",
"color"
);
return color;
}
case "SetResolutionAndScaleTo": {
return new Promise(resolve => {
const window = this.contentWindow;
const { resolution } = aMsg.data;
window.visualViewport.addEventListener("resize", () => resolve(), {
once: true,
});
window.windowUtils.setResolutionAndScaleTo(resolution);
});
}
}
return null;
}
}
const { debug } = TestSupportChild.initLogging("GeckoViewTestSupport");
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