Refactory of the MaterialNumberBox and related classes.

Author: gilberto-torrezan

gwt-material/src/main/java/gwt/material/design/client/base/FloatBox.java

@@ -0,0 +1,75 @@
+package gwt.material.design.client.base;
+
+/*
+ * #%L
+ * GwtMaterial
+ * %%
+ * Copyright (C) 2015 GwtMaterialDesign
+ * %%
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * #L%
+ */
+
+import gwt.material.design.client.ui.MaterialNumberBox;
+
+import java.io.IOException;
+import java.text.ParseException;
+
+import com.google.gwt.dom.client.Document;
+import com.google.gwt.text.shared.Parser;
+import com.google.gwt.text.shared.Renderer;
+import com.google.gwt.user.client.ui.ValueBox;
+
+/**
+ * Base class to handle number values on {@code <input type="number">} elements.
+ * 
+ * The parsing and formatting is done by the browser, using the user specific i18n settings.
+ * 
+ * @author gilberto-torrezan
+ * 
+ * @see MaterialNumberBox
+ */
+@SuppressWarnings({"rawtypes", "unchecked"})
+public class NumberBox<T> extends ValueBox<T> {
+    
+    private static final NumberHandler HANDLER = new NumberHandler();
+
+    public NumberBox() {
+        //currently there's no way to create a <input type="number"> directly
+        super(Document.get().createTextInputElement(), HANDLER, HANDLER);
+    }
+    
+    protected static class NumberHandler<T> implements Renderer<T>, Parser<T> {
+        /*
+         * Note: this method is NOT called by MaterialIntegerBox, MaterialFloatBox or MaterialDoubleBox, the parsing is done by the browser
+         */
+        @Override
+        public T parse(CharSequence text) throws ParseException {
+            return null;
+        }
+
+        @Override
+        public String render(T object) {
+            if (object == null){
+                return "";
+            }
+            return object.toString();
+        }
+
+        @Override
+        public void render(T object, Appendable appendable) throws IOException {
+            appendable.append(render(object));
+        }
+    }
+
+}

gwt-material/src/main/java/gwt/material/design/client/base/FloatParser.java

@@ -22,29 +22,32 @@
 
 //@formatter:off
 
-import com.google.gwt.user.client.ui.DoubleBox;
-
 /**
-* Material Integer Box is an input field that accepts any Double based string from user.
-* <h3>UiBinder Usage:</h3>
-* <pre>
-*{@code <m:MaterialIntegerBox placeholder="Your doble" step=100/>}
-* </pre>
-* @see <a href="http://gwt-material-demo.herokuapp.com/#forms">Material DoubleBox</a>
-* @author paulux84
-*/
-//@formatter:on
+ * Material Integer Box is an input field that accepts any Double based string
+ * from user. <h3>UiBinder Usage:</h3>
+ * 
+ * <pre>
+ * {@code <m:MaterialIntegerBox placeholder="Your doble" step=100/>}
+ * </pre>
+ * 
+ * The parsing and formatting of the number are done natively by the browser,
+ * using the i18n settings from the user.
+ * 
+ * @see <a href="http://gwt-material-demo.herokuapp.com/#forms">Material
+ *      DoubleBox</a>
+ * @author paulux84
+ */
+// @formatter:on
 public class MaterialDoubleBox extends MaterialNumberBox<Double> {
 
     public MaterialDoubleBox() {
-        super(new DoubleBox());
         setStep("any");
     }
-    
+
     @Override
     public Double getValue() {
         double number = getValueAsNumber();
-        if (Double.isNaN(number)){
+        if (Double.isNaN(number)) {
             return null;
         }
         return number;

gwt-material/src/main/java/gwt/material/design/client/base/FloatRenderer.java

@@ -22,7 +22,6 @@
 
 //@formatter:off
 
-import gwt.material.design.client.base.FloatBox;
 
 /**
  * Material Integer Box is an input field that accepts any Float based string from user.
@@ -38,11 +37,9 @@
  * @author paulux84
  */
 //@formatter:on
-//@formatter:on
 public class MaterialFloatBox extends MaterialNumberBox<Float> {
 
     public MaterialFloatBox() {
-        super(new FloatBox());
         setStep("any");
     }
 

gwt-material/src/main/java/gwt/material/design/client/base/NumberBox.java

@@ -22,29 +22,32 @@
 
 //@formatter:off
 
-import com.google.gwt.user.client.ui.IntegerBox;
-
 /**
-* Material Integer Box is an input field that accepts any Integer based string from user.
-* <h3>UiBinder Usage:</h3>
-* <pre>
-*{@code <m:MaterialIntegerBox placeholder="Your integer" step=100/>}
-* </pre>
-* @see <a href="http://gwt-material-demo.herokuapp.com/#forms">Material IntegerBox</a>
-* @author paulux84
-*/
-//@formatter:on
+ * Material Integer Box is an input field that accepts any Integer based string
+ * from user. <h3>UiBinder Usage:</h3>
+ * 
+ * <pre>
+ * {@code <m:MaterialIntegerBox placeholder="Your integer" step=100/>}
+ * </pre>
+ * 
+ * The parsing and formatting of the number are done natively by the browser,
+ * using the i18n settings from the user.
+ * 
+ * @see <a href="http://gwt-material-demo.herokuapp.com/#forms">Material
+ *      IntegerBox</a>
+ * @author paulux84
+ */
+// @formatter:on
 public class MaterialIntegerBox extends MaterialNumberBox<Integer> {
 
     public MaterialIntegerBox() {
-        super(new IntegerBox());
         setStep("1");
     }
-    
+
     @Override
     public Integer getValue() {
         double number = getValueAsNumber();
-        if (Double.isNaN(number)){
+        if (Double.isNaN(number)) {
             return null;
         }
         return (int) Math.rint(number);