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import Set from '../set';
import cache from './cache-traversal-call';
let elesfn = ({
parent: function( selector ){
let parents = [];
// optimisation for single ele call
if( this.length === 1 ){
let parent = this[0]._private.parent;
if( parent ){ return parent; }
}
for( let i = 0; i < this.length; i++ ){
let ele = this[ i ];
let parent = ele._private.parent;
if( parent ){
parents.push( parent );
}
}
return this.spawn( parents, true ).filter( selector );
},
parents: function( selector ){
let parents = [];
let eles = this.parent();
while( eles.nonempty() ){
for( let i = 0; i < eles.length; i++ ){
let ele = eles[ i ];
parents.push( ele );
}
eles = eles.parent();
}
return this.spawn( parents, true ).filter( selector );
},
commonAncestors: function( selector ){
let ancestors;
for( let i = 0; i < this.length; i++ ){
let ele = this[ i ];
let parents = ele.parents();
ancestors = ancestors || parents;
ancestors = ancestors.intersect( parents ); // current list must be common with current ele parents set
}
return ancestors.filter( selector );
},
orphans: function( selector ){
return this.stdFilter( function( ele ){
return ele.isOrphan();
} ).filter( selector );
},
nonorphans: function( selector ){
return this.stdFilter( function( ele ){
return ele.isChild();
} ).filter( selector );
},
children: cache( function( selector ){
let children = [];
for( let i = 0; i < this.length; i++ ){
let ele = this[ i ];
let eleChildren = ele._private.children;
for( let j = 0; j < eleChildren.length; j++ ){
children.push( eleChildren[j] );
}
}
return this.spawn( children, true ).filter( selector );
}, 'children' ),
siblings: function( selector ){
return this.parent().children().not( this ).filter( selector );
},
isParent: function(){
let ele = this[0];
if( ele ){
return ele.isNode() && ele._private.children.length !== 0;
}
},
isChildless: function(){
let ele = this[0];
if( ele ){
return ele.isNode() && ele._private.children.length === 0;
}
},
isChild: function(){
let ele = this[0];
if( ele ){
return ele.isNode() && ele._private.parent != null;
}
},
isOrphan: function(){
let ele = this[0];
if( ele ){
return ele.isNode() && ele._private.parent == null;
}
},
descendants: function( selector ){
let elements = [];
function add( eles ){
for( let i = 0; i < eles.length; i++ ){
let ele = eles[ i ];
elements.push( ele );
if( ele.children().nonempty() ){
add( ele.children() );
}
}
}
add( this.children() );
return this.spawn( elements, true ).filter( selector );
}
});
function forEachCompound( eles, fn, includeSelf, recursiveStep ){
let q = [];
let did = new Set();
let cy = eles.cy();
let hasCompounds = cy.hasCompoundNodes();
for( let i = 0; i < eles.length; i++ ){
let ele = eles[i];
if( includeSelf ){
q.push( ele );
} else if( hasCompounds ){
recursiveStep( q, did, ele );
}
}
while( q.length > 0 ){
let ele = q.shift();
fn( ele );
did.add( ele.id() );
if( hasCompounds ){
recursiveStep( q, did, ele );
}
}
return eles;
}
function addChildren( q, did, ele ){
if( ele.isParent() ){
let children = ele._private.children;
for( let i = 0; i < children.length; i++ ){
let child = children[i];
if( !did.has( child.id() ) ){
q.push( child );
}
}
}
}
// very efficient version of eles.add( eles.descendants() ).forEach()
// for internal use
elesfn.forEachDown = function( fn, includeSelf = true ){
return forEachCompound( this, fn, includeSelf, addChildren );
};
function addParent( q, did, ele ){
if( ele.isChild() ){
let parent = ele._private.parent;
if( !did.has( parent.id() ) ){
q.push( parent );
}
}
}
elesfn.forEachUp = function( fn, includeSelf = true ){
return forEachCompound( this, fn, includeSelf, addParent );
};
function addParentAndChildren( q, did, ele ){
addParent( q, did, ele );
addChildren( q, did, ele );
}
elesfn.forEachUpAndDown = function( fn, includeSelf = true ){
return forEachCompound( this, fn, includeSelf, addParentAndChildren );
};
// aliases
elesfn.ancestors = elesfn.parents;
export default elesfn;
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