82 lines
2.1 KiB
JavaScript
82 lines
2.1 KiB
JavaScript
(function(root, factory) {
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// `root` does not resolve to the global window object in a Browserified
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// bundle, so a direct reference to that object is used instead.
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var _srcDoc = window.srcDoc;
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if (typeof define === "function" && define.amd) {
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define(['exports'], function(exports) {
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factory(exports, _srcDoc);
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root.srcDoc = exports;
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});
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} else if (typeof exports === "object") {
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factory(exports, _srcDoc);
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} else {
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root.srcDoc = {};
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factory(root.srcDoc, _srcDoc);
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}
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})(this, function(exports, _srcDoc) {
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var idx, iframes;
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var isCompliant = !!("srcdoc" in document.createElement("iframe"));
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var implementations = {
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compliant: function( iframe, content ) {
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if (content) {
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iframe.setAttribute("srcdoc", content);
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}
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},
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legacy: function( iframe, content ) {
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var jsUrl;
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if (!iframe || !iframe.getAttribute) {
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return;
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}
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if (!content) {
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content = iframe.getAttribute("srcdoc");
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} else {
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iframe.setAttribute("srcdoc", content);
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}
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if (content) {
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// The value returned by a script-targeted URL will be used as
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// the iFrame's content. Create such a URL which returns the
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// iFrame element's `srcdoc` attribute.
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jsUrl = "javascript: window.frameElement.getAttribute('srcdoc');";
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iframe.setAttribute("src", jsUrl);
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// Explicitly set the iFrame's window.location for
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// compatability with IE9, which does not react to changes in
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// the `src` attribute when it is a `javascript:` URL, for
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// some reason
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if (iframe.contentWindow) {
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iframe.contentWindow.location = jsUrl;
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}
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}
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}
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};
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var srcDoc = exports;
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// Assume the best
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srcDoc.set = implementations.compliant;
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srcDoc.noConflict = function() {
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window.srcDoc = _srcDoc;
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return srcDoc;
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};
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// If the browser supports srcdoc, no shimming is necessary
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if (isCompliant) {
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return;
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}
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srcDoc.set = implementations.legacy;
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// Automatically shim any iframes already present in the document
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iframes = document.getElementsByTagName("iframe");
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idx = iframes.length;
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while (idx--) {
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srcDoc.set( iframes[idx] );
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}
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});
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