michael@0: function handleRequest(request, response)
michael@0: {
michael@0:   response.setHeader("Cache-Control", "no-cache", false);
michael@0:   var query = request.queryString;
michael@0:   switch (query) {
michael@0:     case "reset":
michael@0:       response.setHeader("Content-Type", "application/ecmascript", false);
michael@0:       setState("1l", "");
michael@0:       setState("1v", "");
michael@0:       setState("2l", "");
michael@0:       setState("2v", "");
michael@0:       break;
michael@0:     case "1l":
michael@0:     case "1v":
michael@0:     case "2l":
michael@0:     case "2v":
michael@0:       setState(query, getState(query) + "load");
michael@0:       response.setStatusLine("1.1", 302, "Found");
michael@0:       // redirect to a solid blue image
michael@0:       response.setHeader("Location", "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAIAAACQd1PeAAAADElEQVQI12NgYPgPAAEDAQDZqt2zAAAAAElFTkSuQmCC");
michael@0:       response.setHeader("Content-Type", "text/plain", false);
michael@0:       break;
michael@0: 
michael@0:     case "waitforresult":
michael@0:       response.setHeader("Content-Type", "application/ecmascript", false);
michael@0:       response.write("var start = Date.now();\n");
michael@0:       // fall through!
michael@0: 
michael@0:     case "waitforresult-internal":
michael@0:       response.setHeader("Content-Type", "application/ecmascript", false);
michael@0:       response.write("if ('" + getState("1l") + "' == 'load' && '" +
michael@0:                      getState("1v") + "' == '' && '" +
michael@0:                      getState("2l") + "' == 'load' && '" +
michael@0:                      getState("2v") + "' == '') { \n");
michael@0:       response.write("setTimeout(function() {\n");
michael@0:       response.write("var s = document.createElement('script');\n");
michael@0:       response.write("s.src = 'visited_image_loading.sjs?result';\n");
michael@0:       response.write("document.body.appendChild(s);");
michael@0:       response.write("}, Math.max(100, 2 * (Date.now() - start)));\n");
michael@0:       response.write("} else setTimeout(function() {\n");
michael@0:       response.write("var s = document.createElement('script');\n");
michael@0:       response.write("s.src = 'visited_image_loading.sjs?waitforresult-internal';\n");
michael@0:       response.write("document.body.appendChild(s);");
michael@0:       response.write("}, 10);\n");
michael@0:       break;
michael@0: 
michael@0:     case "result":
michael@0:       response.setHeader("Content-Type", "application/ecmascript", false);
michael@0:       response.write("is('" + getState("1l") +
michael@0:                      "', 'load', 'image 1l should have been loaded once')\n");
michael@0:       response.write("is('" + getState("1v") +
michael@0:                      "', '', 'image 1v should not have been loaded')\n");
michael@0:       response.write("is('" + getState("2l") +
michael@0:                      "', 'load', 'image 2l should have been loaded once')\n");
michael@0:       response.write("is('" + getState("2v") +
michael@0:                      "', '', 'image 2v should not have been loaded')\n");
michael@0:       response.write("SimpleTest.finish()");
michael@0:       break;
michael@0:   }
michael@0: }