ba1507ee by David LaPalomento

Save and restore params from the fragment identifier

Read location.hash when the switcher loads and use the parameters parsed out of it for the initial network conditions. Update location.hash after every simulation run completes so that it's easy to save scenarios for later re-use.
1 parent 6cde85b7
...@@ -85,6 +85,13 @@ ...@@ -85,6 +85,13 @@
85 capacity. 85 capacity.
86 <button type=button class=add-time-period>Add time period</button> 86 <button type=button class=add-time-period>Add time period</button>
87 </p> 87 </p>
88 <p>
89 If you've created a complex scenario you'd like to retry
90 later, run the simulation and then save the URL of this
91 page. All of the network conditions you specify are
92 saved into the URL fragment after the results of a
93 simulation run are displayed.
94 </p>
88 The video is available at 95 The video is available at
89 <ul> 96 <ul>
90 <li><input class=bitrate type=number min=1 value=65536> bits per second</li> 97 <li><input class=bitrate type=number min=1 value=65536> bits per second</li>
......
...@@ -29,18 +29,43 @@ ...@@ -29,18 +29,43 @@
29 29
30 // a dynamic number of time-bandwidth pairs may be defined to drive the simulation 30 // a dynamic number of time-bandwidth pairs may be defined to drive the simulation
31 (function() { 31 (function() {
32 var addTimePeriod = document.querySelector('.add-time-period'), 32 var params,
33 networkTimeline = document.querySelector('.network-timeline'), 33 networkTimeline = document.querySelector('.network-timeline'),
34 timePeriod = networkTimeline.querySelector('li:last-child').cloneNode(true); 34 timePeriod = networkTimeline.querySelector('li:last-child').cloneNode(true),
35 addTimePeriod.addEventListener('click', function() { 35 appendTimePeriod = function() {
36 var clone = timePeriod.cloneNode(true), 36 var clone = timePeriod.cloneNode(true),
37 count = networkTimeline.querySelectorAll('input.bandwidth').length, 37 count = networkTimeline.querySelectorAll('input.bandwidth').length,
38 time = clone.querySelector('.time'), 38 time = clone.querySelector('.time'),
39 bandwidth = clone.querySelector('input.bandwidth'); 39 bandwidth = clone.querySelector('input.bandwidth');
40 40
41 time.name = 'time' + count; 41 time.name = 'time' + count;
42 bandwidth.name = 'bandwidth' + count; 42 bandwidth.name = 'bandwidth' + count;
43 networkTimeline.appendChild(clone); 43 networkTimeline.appendChild(clone);
44 };
45 document.querySelector('.add-time-period')
46 .addEventListener('click', appendTimePeriod);
47
48 // apply any simulation parameters that were set in the fragment identifier
49 if (!window.location.hash) {
50 return;
51 }
52
53 // time periods are specified as t<seconds>=<bitrate>
54 // e.g. #t15=450560&t150=65530
55 params = window.location.hash.substring(1)
56 .split('&')
57 .map(function(param) {
58 return ((/t(\d+)=(\d+)/i).exec(param) || [])
59 .map(window.parseFloat).slice(1);
60 }).filter(function(pair) {
61 return pair.length === 2;
62 });
63
64 networkTimeline.innerHTML = '';
65 params.forEach(function(param) {
66 appendTimePeriod();
67 networkTimeline.querySelector('li:last-child .time').value = param[0];
68 networkTimeline.querySelector('li:last-child input.bandwidth').value = param[1];
44 }); 69 });
45 })(); 70 })();
46 71
...@@ -242,6 +267,11 @@ ...@@ -242,6 +267,11 @@
242 clock.restore(); 267 clock.restore();
243 fakeXhr.restore(); 268 fakeXhr.restore();
244 269
270 // update the fragment identifier so this scenario can be re-run easily
271 window.location.hash = '#' + options.bandwidths.map(function(interval) {
272 return 't' + interval.time + '=' + interval.bandwidth;
273 }).join('&');
274
245 done(null, results); 275 done(null, results);
246 }, 0); 276 }, 0);
247 }); 277 });
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