Maurizio Lupo
12 years ago
2 changed files with 74 additions and 0 deletions
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<html> |
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<body> |
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<iframe id="reveal" src="reveal.js/index.html" width="500" height="500"></iframe> |
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<div> |
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<input id="back" type="button" value="go back"/> |
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<input id="ahead" type="button" value="go ahead"/> |
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<input id="slideto" type="button" value="slideto 2-2"/> |
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</div> |
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<script> |
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(function (){ |
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var back = document.getElementById('back'), |
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ahead = document.getElementById('ahead'), |
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slideto = document.getElementById('slideto'), |
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reveal = window.frames[0]; |
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back.addEventListener('click', function (){ |
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reveal.postMessage(JSON.stringify({method: 'prev', args: []}), '*'); |
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},false); |
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ahead.addEventListener('click', function (){ |
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reveal.postMessage(JSON.stringify({method: 'next', args: []}), '*'); |
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},false); |
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slideto.addEventListener('click', function (){ |
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reveal.postMessage(JSON.stringify({method: 'slide', args: [2,2]}), '*'); |
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},false); |
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}()); |
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</script> |
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</body> |
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</html> |
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/* |
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simple postmessage plugin |
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Useful when a reveal slideshow is inside an iframe. |
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It allows to call reveal methods from outside. |
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Example: |
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var reveal = window.frames[0]; |
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// Reveal.prev();
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reveal.postMessage(JSON.stringify({method: 'prev', args: []}), '*'); |
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// Reveal.next();
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reveal.postMessage(JSON.stringify({method: 'next', args: []}), '*'); |
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// Reveal.slide(2, 2);
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reveal.postMessage(JSON.stringify({method: 'slide', args: [2,2]}), '*'); |
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Add to the slideshow: |
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dependencies: [ |
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... |
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{ src: 'plugin/postmessage/postmessage.js', async: true, condition: function() { return !!document.body.classList; } } |
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] |
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*/ |
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(function (){ |
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window.addEventListener("message", function (event){ |
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var data = JSON.parse(event.data), |
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method = data.method, |
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args = data.args; |
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if (Reveal[method]){ |
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Reveal[method].apply(Reveal, data.args); |
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} |
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}, false); |
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}()); |
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