| With the rapid development of the information society, the network becomes a very important information media. People can access network information anywhere and anytime with various embedded device, that embedded browser makes great contribution to it. For the importance of embedded browser, more and more embedded equipment manufacturer pay attation to its investment and development. Therefore, developing an embedded browser independently is meaningful. What's more, it's an innovative idea to developing the ClearBrowser which is not only an embedded browser but also an widget in embedded ClearX grapic system. It will help ClearX graphic system to add a new widget and expand an application area in webpage layout.An embedded browser is made up of several modules and referred to many Internet standards specifications.HTML parsing,DOM technical determine which kind of Web standards the browser support and browser's overall performance for processing network documents. In order to parse most of HTML documents including these error documents, redundancy syntax and priority tag are used to supply multi-level fault-tolerant mechanism when parsing HTML and constrcuting DOM tree. So, The parsing module is efficitive and safe, at the same time, its stability is good.Web page layout module is responsible for the arrangement of each widget display position in the website reasonably and dynamically responsing to web content changes, and then changing the network widgets layout in time. It is an important factor measuring browser's display effect and display speed. The web page layout module combined with ClearX widgets technology, using the position information dynamic feedback mechanism and support web page re-layout, which is beneficial to the web page local refresh and the improvement of web page display speed. Special layout widgets are designed to implement layout module which improves the code reuse rate and guarantees that the layout module is flexible and easy-to-use. |
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