1 line
8.9 KiB
JavaScript
1 line
8.9 KiB
JavaScript
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See: b/138802376\n try {\n return Boolean(new self.OffscreenCanvas(0, 0).getContext(contextName));\n } catch (ex) {\n }\n return false;\n};\n\n/**\n * Whether the browser supports OffscreenCanvas 2D context.\n * @const {boolean}\n */\ngoog.dom.BrowserFeature.OFFSCREEN_CANVAS_2D =\n !goog.dom.BrowserFeature.ASSUME_NO_OFFSCREEN_CANVAS &&\n (goog.dom.BrowserFeature.ASSUME_OFFSCREEN_CANVAS ||\n goog.dom.BrowserFeature.detectOffscreenCanvas_('2d'));\n\n/**\n * Whether attributes 'name' and 'type' can be added to an element after it's\n * created. False in Internet Explorer prior to version 9.\n * @const {boolean}\n */\ngoog.dom.BrowserFeature.CAN_ADD_NAME_OR_TYPE_ATTRIBUTES = true;\n\n/**\n * Whether we can use element.children to access an element's Element\n * children. Available since Gecko 1.9.1, IE 9. 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See: b/138802376\\n try {\\n return Boolean(new self.OffscreenCanvas(0, 0).getContext(contextName));\\n } catch (ex) {\\n }\\n return false;\\n};\\n\\n/**\\n * Whether the browser supports OffscreenCanvas 2D context.\\n * @const {boolean}\\n */\\ngoog.dom.BrowserFeature.OFFSCREEN_CANVAS_2D =\\n !goog.dom.BrowserFeature.ASSUME_NO_OFFSCREEN_CANVAS &&\\n (goog.dom.BrowserFeature.ASSUME_OFFSCREEN_CANVAS ||\\n goog.dom.BrowserFeature.detectOffscreenCanvas_('2d'));\\n\\n/**\\n * Whether attributes 'name' and 'type' can be added to an element after it's\\n * created. False in Internet Explorer prior to version 9.\\n * @const {boolean}\\n */\\ngoog.dom.BrowserFeature.CAN_ADD_NAME_OR_TYPE_ATTRIBUTES = true;\\n\\n/**\\n * Whether we can use element.children to access an element's Element\\n * children. Available since Gecko 1.9.1, IE 9. (IE<9 also includes comment\\n * nodes in the collection.)\\n * @const {boolean}\\n */\\ngoog.dom.BrowserFeature.CAN_USE_CHILDREN_ATTRIBUTE = true;\\n\\n/**\\n * Opera, Safari 3, and Internet Explorer 9 all support innerText but they\\n * include text nodes in script and style tags. 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