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import Emitter from '../emitter';
import define from '../define';
import * as is from '../is';
import Selector from '../selector';
let emitterOptions = {
qualifierCompare: function( selector1, selector2 ){
if( selector1 == null || selector2 == null ){
return selector1 == null && selector2 == null;
} else {
return selector1.sameText( selector2 );
}
},
eventMatches: function( ele, listener, eventObj ){
let selector = listener.qualifier;
if( selector != null ){
return ele !== eventObj.target && is.element( eventObj.target ) && selector.matches( eventObj.target );
}
return true;
},
addEventFields: function( ele, evt ){
evt.cy = ele.cy();
evt.target = ele;
},
callbackContext: function( ele, listener, eventObj ){
return listener.qualifier != null ? eventObj.target : ele;
},
beforeEmit: function( context, listener/*, eventObj*/ ){
if( listener.conf && listener.conf.once ){
listener.conf.onceCollection.removeListener( listener.event, listener.qualifier, listener.callback );
}
},
bubble: function(){
return true;
},
parent: function( ele ){
return ele.isChild() ? ele.parent() : ele.cy();
}
};
let argSelector = function( arg ){
if( is.string(arg) ){
return new Selector( arg );
} else {
return arg;
}
};
let elesfn = ({
createEmitter: function(){
for( let i = 0; i < this.length; i++ ){
let ele = this[i];
let _p = ele._private;
if( !_p.emitter ){
_p.emitter = new Emitter( emitterOptions, ele );
}
}
return this;
},
emitter: function(){
return this._private.emitter;
},
on: function( events, selector, callback ){
let argSel = argSelector(selector);
for( let i = 0; i < this.length; i++ ){
let ele = this[i];
ele.emitter().on( events, argSel, callback );
}
return this;
},
removeListener: function( events, selector, callback ){
let argSel = argSelector(selector);
for( let i = 0; i < this.length; i++ ){
let ele = this[i];
ele.emitter().removeListener( events, argSel, callback );
}
return this;
},
removeAllListeners: function(){
for( let i = 0; i < this.length; i++ ){
let ele = this[i];
ele.emitter().removeAllListeners();
}
return this;
},
one: function( events, selector, callback ){
let argSel = argSelector(selector);
for( let i = 0; i < this.length; i++ ){
let ele = this[i];
ele.emitter().one( events, argSel, callback );
}
return this;
},
once: function( events, selector, callback ){
let argSel = argSelector(selector);
for( let i = 0; i < this.length; i++ ){
let ele = this[i];
ele.emitter().on( events, argSel, callback, {
once: true,
onceCollection: this
} );
}
},
emit: function( events, extraParams ){
for( let i = 0; i < this.length; i++ ){
let ele = this[i];
ele.emitter().emit( events, extraParams );
}
return this;
},
emitAndNotify: function( event, extraParams ){ // for internal use only
if( this.length === 0 ){ return; } // empty collections don't need to notify anything
// notify renderer
this.cy().notify( event, this );
this.emit( event, extraParams );
return this;
}
});
define.eventAliasesOn( elesfn );
export default elesfn;
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