From: Svjatoslav Agejenko <svjatoslav@svjatoslav.eu>
Date: Tue, 19 Jun 2018 23:34:16 +0000 (+0300)
Subject: Simplified navigation.
X-Git-Tag: svjatoslavcommons-1.8~30
X-Git-Url: http://www2.svjatoslav.eu/gitweb/?p=svjatoslav_commons.git;a=commitdiff_plain;h=f7500732a4ba759bebc5680d0027ae903312a7c9

Simplified navigation.
---

diff --git a/pom.xml b/pom.xml
index b925251..090631d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -120,7 +120,7 @@
         <connection>scm:git:ssh://git@svjatoslav.eu/home/git/repositories/svjatoslav_commons.git</connection>
         <developerConnection>scm:git:ssh://git@svjatoslav.eu/home/git/repositories/svjatoslav_commons.git
         </developerConnection>
-      <tag>HEAD</tag>
+        <tag>HEAD</tag>
   </scm>
 
 </project>
diff --git a/src/main/java/eu/svjatoslav/commons/network/LocaleConfiguration.java b/src/main/java/eu/svjatoslav/commons/network/LocaleConfiguration.java
deleted file mode 100755
index 447f530..0000000
--- a/src/main/java/eu/svjatoslav/commons/network/LocaleConfiguration.java
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Svjatoslav Commons - shared library of common functionality.
- * Copyright ©2012-2017, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 3 of the GNU Lesser General Public License
- * or later as published by the Free Software Foundation.
- */
-
-package eu.svjatoslav.commons.network;
-
-import javax.servlet.http.HttpServletRequest;
-import java.util.ArrayList;
-import java.util.List;
-
-public class LocaleConfiguration {
-
-    final String defaultLocale;
-    private final List<String> allowedLocales = new ArrayList<>();
-
-    public LocaleConfiguration(final String defaultLocale,
-                               final String... allowedLocales) {
-
-        this.defaultLocale = defaultLocale;
-
-        for (final String locale : allowedLocales)
-            getAllowedLocales().add(locale);
-    }
-
-    public String detectCurrentLocale(final HttpServletRequest request) {
-
-        final String sessionLocaleString = (String) request.getSession()
-                .getAttribute("locale");
-
-        String result = defaultLocale;
-        if (isAllowedLocale(sessionLocaleString))
-            result = sessionLocaleString;
-
-        final String requestLocale = request.getParameter("locale");
-
-        if (isAllowedLocale(requestLocale))
-            result = requestLocale;
-
-        request.getSession().setAttribute("locale", result);
-
-        return result;
-    }
-
-    public List<String> getAllowedLocales() {
-        return allowedLocales;
-    }
-
-    public boolean isAllowedLocale(final String locale) {
-        return allowedLocales.contains(locale);
-    }
-
-}
diff --git a/src/main/java/eu/svjatoslav/commons/network/navigation/Navigation.java b/src/main/java/eu/svjatoslav/commons/network/navigation/Navigation.java
index e6ed8ef..2c23e1d 100755
--- a/src/main/java/eu/svjatoslav/commons/network/navigation/Navigation.java
+++ b/src/main/java/eu/svjatoslav/commons/network/navigation/Navigation.java
@@ -9,80 +9,54 @@
 
 package eu.svjatoslav.commons.network.navigation;
 
-import eu.svjatoslav.commons.network.LocaleConfiguration;
-
 import javax.servlet.http.HttpServletRequest;
 import java.net.MalformedURLException;
 import java.net.URL;
-import java.util.List;
-
-public class Navigation<NI extends NavigationItem> {
 
-    protected final LocaleConfiguration localeConfiguration;
-    private NI rootNavigationItem;
-    private NI defaultNavigationItem;
+public class Navigation {
 
-    public Navigation(final LocaleConfiguration localeConfiguration) {
-        this.localeConfiguration = localeConfiguration;
-    }
+    private NavigationItem root = new NavigationItem(null, null, null);
 
-    public NI getDefaultNavigationItem() {
-        return defaultNavigationItem;
+    public NavigationItem getRoot(){
+        return root;
     }
 
-    private String getGetNotNullString(final String string) {
-        if (string != null)
-            return string;
-
-        return "";
-    }
-
-    public LocaleConfiguration getLocaleConfiguration() {
-        return localeConfiguration;
-    }
-
-    public NI getRootNavigationItem() {
-        return rootNavigationItem;
-    }
-
-    public NI getSelectedItem(final HttpServletRequest request) {
+    public NavigationItem getSelectedItem(final HttpServletRequest request) {
         final String requestUrl = request.getRequestURL().toString();
 
+        final String requestPath;
         try {
-            final String requestPath = new URL(requestUrl).getPath();
+            requestPath = new URL(requestUrl).getPath();
+        } catch (MalformedURLException e) {
+            throw new IllegalArgumentException("Illegal request URL provided." , e);
+        }
 
-            @SuppressWarnings("unchecked") final NI match = (NI) rootNavigationItem.getMatchingNavigationItem(requestPath);
+        @SuppressWarnings("unchecked") final NavigationItem match = root.getMatch(requestPath);
 
-            if (match != null)
-                return match;
-        } catch (final MalformedURLException e) {
-            System.out.println("Cannot handle URL: " + requestUrl);
-            e.printStackTrace();
-        }
+        if (match != null)
+            return match;
 
-        return getDefaultNavigationItem();
+        return root.getDefaultNavigationItem();
     }
 
     @SuppressWarnings("unchecked")
     public String getTopMenu(final HttpServletRequest request) {
 
-        final String currentLocale = localeConfiguration.detectCurrentLocale(request);
-
-        final NI selectedItem = getSelectedItem(request);
+        final NavigationItem selectedItem = getSelectedItem(request);
         final StringBuilder result = new StringBuilder();
 
-        result.append("<div class=\"" + getGetNotNullString(rootNavigationItem.getCssPrefix()) + "navigationMenu\">");
+        result.append("<div class=\"navigationMenu\">");
 
-        for (final NI item : (List<NI>) getRootNavigationItem().getSubElements()) {
+        for (final NavigationItem item : root.getChildren()) {
 
             if (item == selectedItem)
-                result.append("<a class=\"" + getGetNotNullString(item.getCssPrefix()) + "menuItemSelected\" href=\""
-                        + item.getLinkUrl() + "\">");
+                result.append("<a class=\"menuItemSelected\" href=\""
+                        + item.getUrl() + "\">");
             else
-                result.append("<a class=\"" + getGetNotNullString(item.getCssPrefix()) + "menuItem\" href=\""
-                        + item.getLinkUrl() + "\">");
+                result.append("<a class=\"menuItem\" href=\""
+                        + item.getUrl() + "\">");
 
-            result.append("<div>" + item.getTitle(currentLocale) + "</div>");
+            result.append("<div>" + item.getTitle() + "</div>");
             result.append("</a>");
         }
 
@@ -91,14 +65,4 @@ public class Navigation<NI extends NavigationItem> {
         return result.toString();
     }
 
-    public NI setDefaultNavigationItem(final NI defaultNavigationItem) {
-        this.defaultNavigationItem = defaultNavigationItem;
-        return defaultNavigationItem;
-    }
-
-    public NI setRootNavigationItem(final NI rootNavigationItem) {
-        this.rootNavigationItem = rootNavigationItem;
-        return rootNavigationItem;
-    }
-
 }
diff --git a/src/main/java/eu/svjatoslav/commons/network/navigation/NavigationItem.java b/src/main/java/eu/svjatoslav/commons/network/navigation/NavigationItem.java
index 0edc44e..0359440 100755
--- a/src/main/java/eu/svjatoslav/commons/network/navigation/NavigationItem.java
+++ b/src/main/java/eu/svjatoslav/commons/network/navigation/NavigationItem.java
@@ -12,73 +12,45 @@ package eu.svjatoslav.commons.network.navigation;
 import eu.svjatoslav.commons.string.WildCardMatcher;
 
 import java.util.ArrayList;
-import java.util.HashMap;
 import java.util.List;
-import java.util.Map;
 
 public class NavigationItem {
 
-    private final Map<String, String> localeToTitle = new HashMap<>();
-    private final ArrayList<NavigationItem> subElements = new ArrayList<>();
-    private final NavigationItem parent;
-    private final Navigation<? extends NavigationItem> navigation;
-    private final String linkUrl;
-    private String matchingPattern;
-    /**
-     * CSS prefix is inherited to child menu items.
-     */
-    private String cssPrefix;
-
-    /**
-     * Used to build root navigation item.
-     */
-    public NavigationItem(final Navigation<? extends NavigationItem> navigation) {
-        this.navigation = navigation;
-        parent = null;
-        matchingPattern = null;
-        linkUrl = null;
-    }
-
-    public NavigationItem(final NavigationItem parent, final String linkUrl, final String... titles) {
-
-        navigation = parent.getNavigation();
-        this.parent = parent;
-        this.linkUrl = linkUrl;
-        matchingPattern = linkUrl;
+    private final ArrayList<NavigationItem> children = new ArrayList<>();
+    private final String url;
+    private String pattern;
+    private String title;
+    private boolean isDefault;
 
-        initializeLocalizedTitles(titles);
-
-        parent.addNavigationItem(this);
+    public NavigationItem(final String url, String pattern, String title ) {
+        this.url = url;
+        this.pattern = pattern;
+        this.title = title;
     }
 
-    public void addNavigationItem(final NavigationItem navigationItem) {
-        subElements.add(navigationItem);
+    public NavigationItem setDefault(){
+        isDefault = true;
+        return this;
     }
 
-    protected String getCssPrefix() {
-        if (cssPrefix != null)
-            return cssPrefix;
-
-        if (parent == null)
-            return null;
-
-        return parent.getCssPrefix();
+    public boolean isDefault(){
+        return isDefault;
     }
 
-    public void setCssPrefix(final String cssPrefix) {
-        this.cssPrefix = cssPrefix;
+    public void add(final NavigationItem navigationItem) {
+        children.add(navigationItem);
     }
 
-    public String getLinkUrl() {
-        return linkUrl;
+    public String getUrl() {
+        return url;
     }
 
-    NavigationItem getMatchingNavigationItem(final String requestPath) {
+    NavigationItem getMatch(final String requestPath) {
         if (matchesUrl(requestPath))
             return this;
 
-        for (final NavigationItem childNavigationItem : subElements) {
-            final NavigationItem match = childNavigationItem.getMatchingNavigationItem(requestPath);
+        for (final NavigationItem childNavigationItem : children) {
+            final NavigationItem match = childNavigationItem.getMatch(requestPath);
 
             if (match != null)
                 return match;
@@ -86,41 +58,22 @@ public class NavigationItem {
         return null;
     }
 
-    public Navigation<? extends NavigationItem> getNavigation() {
-        return navigation;
-    }
-
-    public List<NavigationItem> getSubElements() {
-        return subElements;
+    public List<NavigationItem> getChildren() {
+        return children;
     }
 
-    public String getTitle(final String locale) {
-        return localeToTitle.get(locale);
-    }
-
-    private void initializeLocalizedTitles(final String... titles) {
-        final List<String> locales = getNavigation().getLocaleConfiguration().getAllowedLocales();
-        if (locales.size() != titles.length)
-            throw new RuntimeException("There should be exactly " + locales.size() + " title(s).");
-
-        for (int i = 0; i < titles.length; i++)
-            localeToTitle.put(locales.get(i), titles[i]);
+    public String getTitle() {
+        return title;
     }
 
     public boolean matchesUrl(final String url) {
-        return WildCardMatcher.match(url, matchingPattern);
-    }
-
-    public NavigationItem setPattern(final String pattern) {
-        matchingPattern = pattern;
-        return this;
+        return WildCardMatcher.match(url, pattern);
     }
 
-    @Override
-    public String toString() {
-        return "NavigationItem [matchingPattern=" + matchingPattern + ", localeToTitle=" + localeToTitle
-                + ", subElements count=" + subElements.size() + ", linkUrl=" + linkUrl + ", cssPrefix=" + cssPrefix
-                + "]";
+    public NavigationItem getDefaultNavigationItem() {
+        for (NavigationItem child : children)
+            if (child.isDefault())
+                return child;
+        return null;
     }
-
 }