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Diffstat (limited to 'browser/components/shell/ScreenshotChild.jsm')
-rw-r--r-- | browser/components/shell/ScreenshotChild.jsm | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/browser/components/shell/ScreenshotChild.jsm b/browser/components/shell/ScreenshotChild.jsm new file mode 100644 index 0000000000..72a15d8695 --- /dev/null +++ b/browser/components/shell/ScreenshotChild.jsm @@ -0,0 +1,35 @@ +/* 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/. */ + +"use strict"; + +const EXPORTED_SYMBOLS = ["ScreenshotChild"]; + +class ScreenshotChild extends JSWindowActorChild { + receiveMessage(message) { + if (message.name == "GetDimensions") { + return this.getDimensions(); + } + return null; + } + + async getDimensions() { + if (this.document.readyState != "complete") { + await new Promise(resolve => + this.contentWindow.addEventListener("load", resolve, { once: true }) + ); + } + + let { contentWindow } = this; + + return { + innerWidth: contentWindow.innerWidth, + innerHeight: contentWindow.innerHeight, + scrollMinX: contentWindow.scrollMinX, + scrollMaxX: contentWindow.scrollMaxX, + scrollMinY: contentWindow.scrollMinY, + scrollMaxY: contentWindow.scrollMaxY, + }; + } +} |