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sturts_menu 的源代码 主要提过了常用的menu菜单样式

<a name="244" href="#244">244</a>     <em>/**</em>
<a name="245" href="#245">245</a> <em>     * Method getMenu.  Get a subMenu beneath a root or parent menu.  Will drill-down as deep as requested</em>
<a name="246" href="#246">246</a> <em>     * @param menuName - e.g grandParent.parent.menu</em>
<a name="247" href="#247">247</a> <em>     * @param delimiter - e.g. '.'</em>
<a name="248" href="#248">248</a> <em>     * @return MenuComponent</em>
<a name="249" href="#249">249</a> <em>     */</em>
<a name="250" href="#250">250</a>     <strong>public</strong> <a href="../../../../net/sf/navigator/menu/MenuComponent.html">MenuComponent</a> getMenu(String menuName, String delimiter) {
<a name="251" href="#251">251</a>         <a href="../../../../net/sf/navigator/menu/MenuComponent.html">MenuComponent</a> parent = <strong>null</strong>;
<a name="252" href="#252">252</a>         StringTokenizer st = <strong>new</strong> StringTokenizer(menuName, delimiter);
<a name="253" href="#253">253</a>         <strong>boolean</strong> firstMenu = <strong>true</strong>;
<a name="254" href="#254">254</a> 
<a name="255" href="#255">255</a>         <strong>while</strong> (st.hasMoreTokens()) {
<a name="256" href="#256">256</a>             <strong>if</strong> (firstMenu) {
<a name="257" href="#257">257</a>                 parent = <strong>this</strong>.getMenu(st.nextToken());
<a name="258" href="#258">258</a>                 firstMenu = false;
<a name="259" href="#259">259</a>             } <strong>else</strong> {
<a name="260" href="#260">260</a>                 <a href="../../../../net/sf/navigator/menu/MenuComponent.html">MenuComponent</a> child = <strong>null</strong>;
<a name="261" href="#261">261</a>                 String name = st.nextToken();
<a name="262" href="#262">262</a>                 <strong>for</strong> (<strong>int</strong> a = 0; a &lt; parent.getComponents().size(); a++) {
<a name="263" href="#263">263</a>                     <strong>if</strong> (name.equals(((MenuComponent) parent.getComponents().get(a)).getName())) {
<a name="264" href="#264">264</a>                         child = (MenuComponent) parent.getComponents().get(a);
<a name="265" href="#265">265</a>                         a = parent.getComponents().size();
<a name="266" href="#266">266</a>                     }
<a name="267" href="#267">267</a>                 }
<a name="268" href="#268">268</a>                 <strong>if</strong> (child != <strong>null</strong>) {
<a name="269" href="#269">269</a>                     parent = child;
<a name="270" href="#270">270</a>                 } <strong>else</strong> {
<a name="271" href="#271">271</a>                     parent = <strong>null</strong>;
<a name="272" href="#272">272</a>                     <strong>break</strong>;
<a name="273" href="#273">273</a>                 }
<a name="274" href="#274">274</a>             }
<a name="275" href="#275">275</a>         }
<a name="276" href="#276">276</a> 
<a name="277" href="#277">277</a>         <strong>return</strong> parent;
<a name="278" href="#278">278</a>     }
<a name="279" href="#279">279</a> 
<a name="280" href="#280">280</a>     <em>/**</em>
<a name="281" href="#281">281</a> <em>     * Method getMenuDepth.</em>
<a name="282" href="#282">282</a> <em>     * Get the depth of the deepest sub-menu within the requested top menu</em>
<a name="283" href="#283">283</a> <em>     * @param menuName - name of the top menu to check the menu depth </em>
<a name="284" href="#284">284</a> <em>     * @return int.  If no menuName found return -1</em>
<a name="285" href="#285">285</a> <em>     */</em>
<a name="286" href="#286">286</a>     <strong>public</strong> <strong>int</strong> getMenuDepth(String menuName) {
<a name="287" href="#287">287</a> 
<a name="288" href="#288">288</a>         <a href="../../../../net/sf/navigator/menu/MenuComponent.html">MenuComponent</a> menu = <strong>this</strong>.getMenu(menuName);
<a name="289" href="#289">289</a>         <strong>if</strong> (menu == <strong>null</strong>)
<a name="290" href="#290">290</a>             <strong>return</strong> -1;
<a name="291" href="#291">291</a>         <strong>if</strong> (menu.getMenuComponents() == <strong>null</strong>)
<a name="292" href="#292">292</a>             <strong>return</strong> 1;
<a name="293" href="#293">293</a>         <strong>return</strong> menu.getMenuDepth();
<a name="294" href="#294">294</a>     }
<a name="295" href="#295">295</a> 
<a name="296" href="#296">296</a>     <em>/**</em>
<a name="297" href="#297">297</a> <em>     * Method getMenuDepth.</em>
<a name="298" href="#298">298</a> <em>     * Get the depth of the deepest sub-menu throughout all menus held in the repository</em>
<a name="299" href="#299">299</a> <em>     * @return int.  If no menus return -1.</em>
<a name="300" href="#300">300</a> <em>     */</em>
<a name="301" href="#301">301</a>     <strong>public</strong> <strong>int</strong> getMenuDepth() {
<a name="302" href="#302">302</a>         <strong>int</strong> currentDepth = 0;
<a name="303" href="#303">303</a> 
<a name="304" href="#304">304</a>         List topMenus = <strong>this</strong>.getTopMenus();
<a name="305" href="#305">305</a> 
<a name="306" href="#306">306</a>         <strong>if</strong> (topMenus == <strong>null</strong>)
<a name="307" href="#307">307</a>             <strong>return</strong> -1;
<a name="308" href="#308">308</a>         <strong>for</strong> (Iterator menu = topMenus.iterator(); menu.hasNext();) {
<a name="309" href="#309">309</a>             <strong>int</strong> depth = ((MenuComponent) menu.next()).getMenuDepth();
<a name="310" href="#310">310</a>             <strong>if</strong> (currentDepth &lt; depth)
<a name="311" href="#311">311</a>                 currentDepth = depth;
<a name="312" href="#312">312</a>         }
<a name="313" href="#313">313</a>         <strong>return</strong> currentDepth;
<a name="314" href="#314">314</a>     }
<a name="315" href="#315">315</a> 
<a name="316" href="#316">316</a>     <em>/**</em>
<a name="317" href="#317">317</a> <em>     * Method getTopMenusAsArray.  Get menus as array rather than a List</em>
<a name="318" href="#318">318</a> <em>     * @return MenuComponent[]</em>
<a name="319" href="#319">319</a> <em>     */</em>
<a name="320" href="#320">320</a>     <strong>public</strong> <a href="../../../../net/sf/navigator/menu/MenuComponent.html">MenuComponent</a>[] getTopMenusAsArray() {
<a name="321" href="#321">321</a>         List menuList = <strong>this</strong>.getTopMenus();
<a name="322" href="#322">322</a>         <a href="../../../../net/sf/navigator/menu/MenuComponent.html">MenuComponent</a>[] menus = <strong>new</strong> <a href="../../../../net/sf/navigator/menu/MenuComponent.html">MenuComponent</a>[menuList.size()];
<a name="323" href="#323">323</a>         <strong>for</strong> (<strong>int</strong> a = 0; a &lt; menuList.size(); a++) {
<a name="324" href="#324">324</a>             menus[a] = (MenuComponent) menuList.get(a);
<a name="325" href="#325">325</a>         }
<a name="326" href="#326">326</a> 
<a name="327" href="#327">327</a>         <strong>return</strong> menus;
<a name="328" href="#328">328</a>     }
<a name="329" href="#329">329</a> 
<a name="330" href="#330">330</a>     <em>/**</em>
<a name="331" href="#331">331</a> <em>     * Get a List of all the top menus' names</em>
<a name="332" href="#332">332</a> <em>     * @return List</em>
<a name="333" href="#333">333</a> <em>     */</em>
<a name="334" href="#334">334</a>     <strong>public</strong> List getTopMenusNames() {
<a name="335" href="#335">335</a>         List menus = <strong>this</strong>.getTopMenus();
<a name="336" href="#336">336</a>         ArrayList names = <strong>new</strong> ArrayList();
<a name="337" href="#337">337</a>         <strong>for</strong> (Iterator iterator = menus.iterator(); iterator.hasNext();) {
<a name="338" href="#338">338</a>             <a href="../../../../net/sf/navigator/menu/MenuComponent.html">MenuComponent</a> menu = (MenuComponent) iterator.next();
<a name="339" href="#339">339</a>             names.add(menu.getName());
<a name="340" href="#340">340</a>         }
<a name="341" href="#341">341</a>         <strong>return</strong> names;
<a name="342" href="#342">342</a>     }
<a name="343" href="#343">343</a> 
<a name="344" href="#344">344</a>     <strong>public</strong> <strong>void</strong> setBreadCrumbDelimiter(String string) {
<a name="345" href="#345">345</a>         breadCrumbDelimiter = string;
<a name="346" href="#346">346</a>     }
<a name="347" href="#347">347</a> 
<a name="348" href="#348">348</a>     <strong>public</strong> <strong>void</strong> buildBreadCrumbs() {
<a name="349" href="#349">349</a>         <strong>if</strong> (breadCrumbDelimiter == <strong>null</strong>) {
<a name="350" href="#350">350</a>             <strong>throw</strong> <strong>new</strong> NullPointerException(<span class="string">"No breadCrumbDelimiter present"</span>);
<a name="351" href="#351">351</a>         }
<a name="352" href="#352">352</a>         ArrayList menus = (ArrayList)<strong>this</strong>.getTopMenus();
<a name="353" href="#353">353</a>         <strong>for</strong> (Iterator iterator = menus.iterator(); iterator.hasNext();) {
<a name="354" href="#354">354</a>             <a href="../../../../net/sf/navigator/menu/MenuComponent.html">MenuComponent</a> menu = (MenuComponent)iterator.next();
<a name="355" href="#355">355</a>             menu.setBreadCrumb(breadCrumbDelimiter);
<a name="356" href="#356">356</a>         }
<a name="357" href="#357">357</a>     }
<a name="358" href="#358">358</a> 
<a name="359" href="#359">359</a>     <strong>public</strong> <strong>void</strong> buildBreadCrumbs(String delimiter) {
<a name="360" href="#360">360</a>         <strong>this</strong>.breadCrumbDelimiter = delimiter;
<a name="361" href="#361">361</a>         buildBreadCrumbs();
<a name="362" href="#362">362</a>     }
<a name="363" href="#363">363</a> }
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