question: public void cellsResized ( Object [ ] cells , mxRectangle [ ] bounds ) { if ( cells != null && bounds != null && cells . length == bounds . length ) { model . beginUpdate ( ) ; try { for ( int i = 0 ; i < cells . length ; i ++ ) { mxRectangle tmp = bounds [ i ] ; mxGeometry geo = model . getGeometry ( cells [ i ] ) ; if ( geo != null && ( geo . getX ( ) != tmp . getX ( ) || geo . getY ( ) != tmp . getY ( ) || geo . getWidth ( ) != tmp . getWidth ( ) || geo . getHeight ( ) != tmp . getHeight ( ) ) ) { geo = ( mxGeometry ) geo . clone ( ) ; if ( geo . isRelative ( ) ) { mxPoint offset = geo . getOffset ( ) ; if ( offset != null ) { offset . setX ( offset . getX ( ) + tmp . getX ( ) - geo . getX ( ) ) ; offset . setY ( offset . getY ( ) + tmp . getY ( ) - geo . getY ( ) ) ; } } else { geo . setX ( tmp . getX ( ) ) ; geo . setY ( tmp . getY ( ) ) ; } geo . setWidth ( tmp . getWidth ( ) ) ; geo . setHeight ( tmp . getHeight ( ) ) ; if ( ! geo . isRelative ( ) && model . isVertex ( cells [ i ] ) && ! isAllowNegativeCoordinates ( ) ) { geo . setX ( Math . max ( 0 , geo . getX ( ) ) ) ; geo . setY ( Math . max ( 0 , geo . getY ( ) ) ) ; } model . setGeometry ( cells [ i ] , geo ) ; if ( isExtendParent ( cells [ i ] ) ) { extendParent ( cells [ i ] ) ; } } } if ( isResetEdgesOnResize ( ) ) { resetEdges ( cells ) ; } fireEvent ( new mxEventObject ( mxEvent . CELLS_RESIZED , "cells" , cells , "bounds" , bounds ) ) ; } finally { model . endUpdate ( ) ; } } }
target:  Sets the bounds of the given cells and fires a <mxEvent.CELLS_RESIZED> event. If extendParents is true, then the parent is extended if a child size is changed so that it overlaps with the parent.