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Revision 6247f163

Added by koszko about 2 years ago

enable toggling of global script blocking policy\n\nThis commit also introduces `light_storage' module which is later going to replace the storage code we use right now.\nAlso included is a hack to properly display scrollbars under Mozilla (needs testing on newer Mozilla browsers).

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common/observable.js
6 6 
 * Redistribution terms are gathered in the `copyright' file.
7 7 
 */
8 8 

  		




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function make()


  		




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{


  		




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    return new Set();


  		




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}


  		




  
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const make = (value=undefined) => ({value, listeners: new Set()});


  		




  
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const subscribe = (observable, cb) => observable.listeners.add(cb);


  		




  
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const unsubscribe = (observable, cb) => observable.listeners.delete(cb);


  		




  13
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function subscribe(observable, cb)


  		




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{


  		




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    observable.add(cb);


  		




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}


  		




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function unsubscribe(observable, cb)


  		




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{


  		




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    observable.delete(cb);


  		




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}


  		




  
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const silent_set = (observable, value) => observable.value = value;


  		




  
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const broadcast = (observable, ...values) =>


  		




  
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      observable.listeners.forEach(cb => cb(...values));


  		




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function broadcast(observable, event)


  		




  
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function set(observable, value)


  		




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{


  		




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    for (const callback of observable)


  		




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	callback(event);


  		




  
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    const old_value = observable.value;


  		




  
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    silent_set(observable, value);


  		




  
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    broadcast(observable, value, old_value);


  		




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}


  		




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const observables = {make, subscribe, unsubscribe, broadcast};


  		




  
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const observables = {make, subscribe, unsubscribe, broadcast, silent_set, set};


  		




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/*


  		




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 * EXPORTS_START


  		












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