Move ComboBox filtering mode to state (#19929)

Change-Id: Ida38de55e1fc06aa6ec5e693f34cd5bc14ac4fc5

client/src/com/vaadin/client/ui/combobox/ComboBoxConnector.java

 import com.vaadin.shared.ui.Connect;
 import com.vaadin.shared.ui.combobox.ComboBoxServerRpc;
 import com.vaadin.shared.ui.combobox.ComboBoxState;
-import com.vaadin.shared.ui.combobox.FilteringMode;
 import com.vaadin.ui.ComboBox;
 
 @Connect(ComboBox.class)
 
         getWidget().pageLength = getState().pageLength;
 
+        getWidget().filteringmode = getState().filteringMode;
+
         Profiler.leave("ComboBoxConnector.onStateChanged update content");
     }
 
         // not a FocusWidget -> needs own tabindex handling
         getWidget().tb.setTabIndex(getState().tabIndex);
 
-        if (uidl.hasAttribute("filteringmode")) {
-            getWidget().filteringmode = FilteringMode.valueOf(uidl
-                    .getStringAttribute("filteringmode"));
-        }
-
         getWidget().nullSelectionAllowed = uidl.hasAttribute("nullselect");
 
         getWidget().nullSelectItem = uidl.hasAttribute("nullselectitem")

server/src/com/vaadin/ui/ComboBox.java

     // Current page when the user is 'paging' trough options
     private int currentPage = -1;
 
-    private FilteringMode filteringMode = FilteringMode.STARTSWITH;
-
     private String filterstring;
     private String prevfilterstring;
 
 
     private boolean isFilteringNeeded() {
         return filterstring != null && filterstring.length() > 0
-                && filteringMode != FilteringMode.OFF;
+                && getFilteringMode() != FilteringMode.OFF;
     }
 
     @Override
             String[] selectedKeys = new String[(getValue() == null
                     && getNullSelectionItemId() == null ? 0 : 1)];
 
-            target.addAttribute("filteringmode", getFilteringMode().toString());
-
             // Paints the options and create array of selected id keys
             int keyIndex = 0;
 
 
         Filterable filterable = (Filterable) container;
 
-        Filter filter = buildFilter(filterstring, filteringMode);
+        Filter filter = buildFilter(filterstring, getFilteringMode());
 
         // adding and removing filters leads to extraneous item set
         // change events from the underlying container, but the ComboBox does
             } else {
                 caption = caption.toLowerCase(getLocale());
             }
-            switch (filteringMode) {
+            switch (getFilteringMode()) {
             case CONTAINS:
                 if (caption.indexOf(filterstring) > -1) {
                     filteredOptions.add(itemId);
 
     @Override
     public void setFilteringMode(FilteringMode filteringMode) {
-        this.filteringMode = filteringMode;
+        getState().filteringMode = filteringMode;
     }
 
     @Override
     public FilteringMode getFilteringMode() {
-        return filteringMode;
+        return getState(false).filteringMode;
     }
 
     @Override

shared/src/com/vaadin/shared/ui/combobox/ComboBoxState.java

      * Number of items to show per page or 0 to disable paging.
      */
     public int pageLength = 10;
+
+    /**
+     * Current filtering mode (look for match of the user typed string in the
+     * beginning of the item caption or anywhere in the item caption).
+     */
+    public FilteringMode filteringMode = FilteringMode.STARTSWITH;
+
 }