37 lines
966 B
JavaScript
37 lines
966 B
JavaScript
function Publisher() {
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var m_subscribers=new Array();
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this.addSubscriber=addSubscriber;
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this.removeSubscriber=removeSubscriber;
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this.notifySubscribers=notifySubscribers;
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function addSubscriber(subscriber,eventType){
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for(var i=0;i<m_subscribers.length;i++){
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if((m_subscribers[i][0]==subscriber)
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&&(m_subscribers[i][1]==eventType)){
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return(false);
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}
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}
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var entryDetails=new Array();
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entryDetails[0]=subscriber;
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entryDetails[1]=eventType;
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m_subscribers[m_subscribers.length]=entryDetails;
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return(true);
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}
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function removeSubscriber(subscriber,eventType){
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for(var i=0;i<m_subscribers.length;i++){
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if((m_subscribers[i][0]==subscriber)
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&&(m_subscribers[i][1]==eventType)){
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m_subscribers.splice(i,1);
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}
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}
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}
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function notifySubscribers(publisher,eventType,addInfo){
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for(var i=0;i<m_subscribers.length;i++){
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if(m_subscribers[i][1]==eventType){
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m_subscribers[i][0](publisher,eventType,addInfo);
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}
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}
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}
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}
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