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November 7, 2016 06:27
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Safari extension - inject a 'before' content script in current tab, indefinitely
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| <html> | |
| <head> | |
| <script type="text/javascript" charset="utf-8"> | |
| // I couldn't find another way to execute a before content script only in a certain Safari tab: | |
| // using dispatching to before script only works in the event 'navigate', which is (imo) too slow for a before contentscript. | |
| // placeholder for the generated content script filename | |
| var currentScriptURL = ""; | |
| // set this variable to the tab in which you want to run the script | |
| // e.g. as soon as someone clicks the toolbar button, save the current active tab here. | |
| var currentExternalTab; | |
| safari.application.addEventListener("beforeNavigate", function(event) { | |
| if (currentScriptURL.length > 0) { | |
| safari.extension.removeContentScript(currentScriptURL); | |
| currentScriptURL = ""; | |
| } | |
| if (event.target == currentExternalTab) { | |
| var whitelist; | |
| // had more success by generating the following whitelist: | |
| var url = new URL(event.url); | |
| if (url) { | |
| whitelist = ["http://*", "https://*", url.protocol + "//" + url.host + "*"]; | |
| } else { | |
| whitelist = [event.url] | |
| } | |
| currentScriptURL = safari.extension.addContentScriptFromURL(safari.extension.baseURI + "inject.js", whitelist, [], false); | |
| } | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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