mirror of https://github.com/vitalif/phantomjs
41 lines
1.4 KiB
JavaScript
41 lines
1.4 KiB
JavaScript
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/**
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* Wait until the test condition is true or a timeout occurs. Useful for waiting
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* on a server response or for a ui change (fadeIn, etc.) to occur.
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*
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* @param testFx javascript condition that evaluates to a boolean,
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* it can be passed in as a string (e.g.: "1 == 1" or "$('#bar').is(':visible')" or
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* as a callback function.
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* @param message a message to show on failure
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* @param timeOutMillis the max amount of time to wait. If not specified, 30sec-s is used.
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*/
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function waitFor(testFx, message, timeOutMillis) {
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var maxtimeOutMillis = timeOutMillis ? timeOutMillis : 30000;
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var start = new Date().getTime();
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var condition = false;
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while(new Date().getTime() - start < maxtimeOutMillis) {
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phantom.sleep(250);
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condition = (typeof(testFx) == "string" ? eval(testFx) : testFx());
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if(condition) break;
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}
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if(!condition) {
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throw Error("Timeout: " + message);
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}
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console.log("+++ waitUntil finished in " + (new Date().getTime() - start) + " millis.");
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}
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// example use:
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if(!phantom.state) {
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// load a twitter page
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phantom.state = "loaded";
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phantom.open("http://twitter.com/WiIlFerreII");
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} else {
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// click the "sign in" link
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$(".signin").click();
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// wait for the sign in dialog to pop up
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waitFor(function() {
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return $("#signin_menu").is(":visible");
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}, "The sign-in dialog should be visible");
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phantom.exit();
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}
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