ember-legacy-class-transform
Version:
The default blueprint for ember-cli addons.
88 lines (83 loc) • 12.1 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.SVG_NAMESPACE = undefined;
exports.domChanges = domChanges;
exports.treeConstruction = treeConstruction;
var _bounds = require('../bounds');
var _helper = require('../dom/helper');
var _util = require('@glimmer/util');
const SVG_NAMESPACE = exports.SVG_NAMESPACE = 'http://www.w3.org/2000/svg';
// Patch: insertAdjacentHTML on SVG Fix
// Browsers: Safari, IE, Edge, Firefox ~33-34
// Reason: insertAdjacentHTML does not exist on SVG elements in Safari. It is
// present but throws an exception on IE and Edge. Old versions of
// Firefox create nodes in the incorrect namespace.
// Fix: Since IE and Edge silently fail to create SVG nodes using
// innerHTML, and because Firefox may create nodes in the incorrect
// namespace using innerHTML on SVG elements, an HTML-string wrapping
// approach is used. A pre/post SVG tag is added to the string, then
// that whole string is added to a div. The created nodes are plucked
// out and applied to the target location on DOM.
function domChanges(document, DOMChangesClass, svgNamespace) {
if (!document) return DOMChangesClass;
if (!shouldApplyFix(document, svgNamespace)) {
return DOMChangesClass;
}
let div = document.createElement('div');
return class DOMChangesWithSVGInnerHTMLFix extends DOMChangesClass {
insertHTMLBefore(parent, nextSibling, html) {
if (html === null || html === '') {
return super.insertHTMLBefore(parent, nextSibling, html);
}
if (parent.namespaceURI !== svgNamespace) {
return super.insertHTMLBefore(parent, nextSibling, html);
}
return fixSVG(parent, div, html, nextSibling);
}
};
}
function treeConstruction(document, TreeConstructionClass, svgNamespace) {
if (!document) return TreeConstructionClass;
if (!shouldApplyFix(document, svgNamespace)) {
return TreeConstructionClass;
}
let div = document.createElement('div');
return class TreeConstructionWithSVGInnerHTMLFix extends TreeConstructionClass {
insertHTMLBefore(parent, reference, html) {
if (html === null || html === '') {
return super.insertHTMLBefore(parent, reference, html);
}
if (parent.namespaceURI !== svgNamespace) {
return super.insertHTMLBefore(parent, reference, html);
}
return fixSVG(parent, div, html, reference);
}
};
}
function fixSVG(parent, div, html, reference) {
// IE, Edge: also do not correctly support using `innerHTML` on SVG
// namespaced elements. So here a wrapper is used.
let wrappedHtml = '<svg>' + html + '</svg>';
div.innerHTML = wrappedHtml;
let [first, last] = (0, _helper.moveNodesBefore)(div.firstChild, parent, reference);
return new _bounds.ConcreteBounds(parent, first, last);
}
function shouldApplyFix(document, svgNamespace) {
let svg = document.createElementNS(svgNamespace, 'svg');
try {
svg['insertAdjacentHTML']('beforeend', '<circle></circle>');
} catch (e) {
// IE, Edge: Will throw, insertAdjacentHTML is unsupported on SVG
// Safari: Will throw, insertAdjacentHTML is not present on SVG
} finally {
// FF: Old versions will create a node in the wrong namespace
if (svg.childNodes.length === 1 && (0, _util.unwrap)(svg.firstChild).namespaceURI === SVG_NAMESPACE) {
// The test worked as expected, no fix required
return false;
}
return true;
}
}
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It is\n//           present but throws an exception on IE and Edge. Old versions of\n//           Firefox create nodes in the incorrect namespace.\n// Fix:      Since IE and Edge silently fail to create SVG nodes using\n//           innerHTML, and because Firefox may create nodes in the incorrect\n//           namespace using innerHTML on SVG elements, an HTML-string wrapping\n//           approach is used. A pre/post SVG tag is added to the string, then\n//           that whole string is added to a div. The created nodes are plucked\n//           out and applied to the target location on DOM.\nexport function domChanges(document, DOMChangesClass, svgNamespace) {\n    if (!document) return DOMChangesClass;\n    if (!shouldApplyFix(document, svgNamespace)) {\n        return DOMChangesClass;\n    }\n    let div = document.createElement('div');\n    return class DOMChangesWithSVGInnerHTMLFix extends DOMChangesClass {\n        insertHTMLBefore(parent, nextSibling, html) {\n            if (html === null || html === '') {\n                return super.insertHTMLBefore(parent, nextSibling, html);\n            }\n            if (parent.namespaceURI !== svgNamespace) {\n                return super.insertHTMLBefore(parent, nextSibling, html);\n            }\n            return fixSVG(parent, div, html, nextSibling);\n        }\n    };\n}\nexport function treeConstruction(document, TreeConstructionClass, svgNamespace) {\n    if (!document) return TreeConstructionClass;\n    if (!shouldApplyFix(document, svgNamespace)) {\n        return TreeConstructionClass;\n    }\n    let div = document.createElement('div');\n    return class TreeConstructionWithSVGInnerHTMLFix extends TreeConstructionClass {\n        insertHTMLBefore(parent, reference, html) {\n            if (html === null || html === '') {\n                return super.insertHTMLBefore(parent, reference, html);\n            }\n            if (parent.namespaceURI !== svgNamespace) {\n                return super.insertHTMLBefore(parent, reference, html);\n            }\n            return fixSVG(parent, div, html, reference);\n        }\n    };\n}\nfunction fixSVG(parent, div, html, reference) {\n    // IE, Edge: also do not correctly support using `innerHTML` on SVG\n    // namespaced elements. So here a wrapper is used.\n    let wrappedHtml = '<svg>' + html + '</svg>';\n    div.innerHTML = wrappedHtml;\n    let [first, last] = moveNodesBefore(div.firstChild, parent, reference);\n    return new ConcreteBounds(parent, first, last);\n}\nfunction shouldApplyFix(document, svgNamespace) {\n    let svg = document.createElementNS(svgNamespace, 'svg');\n    try {\n        svg['insertAdjacentHTML']('beforeend', '<circle></circle>');\n    } catch (e) {\n        // IE, Edge: Will throw, insertAdjacentHTML is unsupported on SVG\n        // Safari: Will throw, insertAdjacentHTML is not present on SVG\n    } finally {\n        // FF: Old versions will create a node in the wrong namespace\n        if (svg.childNodes.length === 1 && unwrap(svg.firstChild).namespaceURI === SVG_NAMESPACE) {\n            // The test worked as expected, no fix required\n            return false;\n        }\n        return true;\n    }\n}"]}