CSS Object Model in Java

This thesis concerns itself with the problems of manipulation with Cascading Style Sheets. The first aim is to create a library for manipulation with Cascading Style Sheets - an object interface of Cascading Style Sheet is proposed, a parser is generated by means of an appliance of JavaCC, the implementation of interface is completed and as a whole connected to a functional unit. The library enables reading Cascading Style Sheet and its transfer into an object representation, editing and subsequently exporting back to the text file. The second part of the thesis deals with the implementation of library for assign property values - every (X)HTML document is formed by the tree of elements to which the rules are consequently searched for in CSS and their declarations are asigned in the correct order. In conclusion of the thesis the DEMO application, which illustrates the possibilities of both libraries and facilitates performing of experiments or testing, is described. Hereafter the technique of profiling, which enables to find out the efficiently demanding passages, which can be optimised further, in the source code, is shown