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| (Empty) | |
| 1 <!DOCTYPE html> |
| 2 <body></body> |
| 3 <script> |
| 4 function synthesizeClick(callback) { |
| 5 var button = document.createElement('input'); |
| 6 button.type = 'button'; |
| 7 button.value = 'click me'; |
| 8 button.onclick = callback; |
| 9 document.body.appendChild(button); |
| 10 |
| 11 if ('eventSender' in window) { |
| 12 var boundingRect = button.getBoundingClientRect(); |
| 13 var x = boundingRect.left + boundingRect.width / 2; |
| 14 var y = boundingRect.top + boundingRect.height / 2; |
| 15 |
| 16 eventSender.mouseMoveTo(x, y); |
| 17 eventSender.mouseDown(); |
| 18 eventSender.mouseUp(); |
| 19 } |
| 20 // else, the user should manually click. |
| 21 } |
| 22 |
| 23 var audioContext = new AudioContext(); |
| 24 window.parent.postMessage({ msg: 'initialState', value: audioContext.state }, |
| 25 '*'); |
| 26 |
| 27 audioContext.resume(); |
| 28 window.parent.postMessage({ msg: 'afterResume', value: audioContext.state }, |
| 29 '*'); |
| 30 |
| 31 var oscillator = audioContext.createOscillator(); |
| 32 oscillator.type = 'square'; |
| 33 oscillator.frequency.value = 2000; |
| 34 oscillator.connect(audioContext.destination); |
| 35 oscillator.start(); |
| 36 window.parent.postMessage({ msg: 'afterOscillator', value: audioContext.state }, |
| 37 '*'); |
| 38 |
| 39 var otherAudioContext = new AudioContext(); |
| 40 |
| 41 synthesizeClick(_ => { |
| 42 audioContext.resume(); |
| 43 window.parent.postMessage({ msg: 'stateAfterClick', |
| 44 value: audioContext.state }, '*'); |
| 45 |
| 46 window.parent.postMessage({ msg: 'stateOtherContextAfterClick', |
| 47 value: otherAudioContext.state }, '*'); |
| 48 |
| 49 synthesizeClick(_ => { |
| 50 var oscillator = otherAudioContext.createOscillator(); |
| 51 oscillator.type = 'square'; |
| 52 oscillator.frequency.value = 2000; |
| 53 oscillator.connect(otherAudioContext.destination); |
| 54 oscillator.start(); |
| 55 |
| 56 window.parent.postMessage({ msg: 'stateOtherContextAfterSecondClick', |
| 57 value: otherAudioContext.state }, '*'); |
| 58 |
| 59 window.parent.postMessage({ msg: 'done' }, '*'); |
| 60 }); |
| 61 }); |
| 62 </script> |
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Chromium Code Reviews
Issue 2314903002:
Web Audio: when media playback requires a user gesture, apply rule to cross origin iframes. (Closed)
