Material DatePicker - Added icon support for the input field.

Author: kevzlou7979

gwt-material/src/main/java/gwt/material/design/client/ui/MaterialDatePicker.java

@@ -25,6 +25,7 @@
 import com.google.gwt.core.client.ScriptInjector;
 import com.google.gwt.dom.client.Document;
 import com.google.gwt.dom.client.Element;
+import com.google.gwt.dom.client.Style;
 import com.google.gwt.editor.client.EditorError;
 import com.google.gwt.editor.client.HasEditorErrors;
 import com.google.gwt.event.dom.client.BlurEvent;
@@ -45,8 +46,7 @@
 import gwt.material.design.client.base.validator.HasValidators;
 import gwt.material.design.client.base.validator.ValidationChangedEvent.ValidationChangedHandler;
 import gwt.material.design.client.base.validator.Validator;
-import gwt.material.design.client.constants.DatePickerLanguage;
-import gwt.material.design.client.constants.Orientation;
+import gwt.material.design.client.constants.*;
 import gwt.material.design.client.ui.html.DateInput;
 import gwt.material.design.client.ui.html.Label;
 
@@ -74,7 +74,7 @@
 //@formatter:on
 public class MaterialDatePicker extends MaterialWidget implements HasGrid, HasError, HasOrientation, HasPlaceholder,
         HasValue<Date>, HasOpenHandlers<MaterialDatePicker>, HasCloseHandlers<MaterialDatePicker>, HasEditorErrors<Date>,
-        HasErrorHandler, HasValidators<Date>, HasBlankValidator, HasBlurHandlers {
+        HasErrorHandler, HasValidators<Date>, HasBlankValidator, HasBlurHandlers, HasIcon {
 
     /**
      * Enum for identifying various selection types for the picker.
@@ -107,6 +107,7 @@ public enum MaterialDatePickerType {
     private final BlankValidatorMixin<MaterialDatePicker, Date> validatorMixin = new BlankValidatorMixin<>(this, errorHandlerMixin.getErrorHandler());
 
     private boolean initialized = false;
+    private MaterialIcon icon = new MaterialIcon();
 
     public MaterialDatePicker() {
         super(Document.get().createDivElement(), "input-field");
@@ -622,4 +623,47 @@ public void stop() {
     protected native void stop(Element picker) /*-{
         picker.pickadate('picker').stop();
     }-*/;
+
+    @Override
+    public MaterialIcon getIcon() {
+        return icon;
+    }
+
+    @Override
+    public void setIconType(IconType iconType) {
+        icon.setIconType(iconType);
+        icon.setIconPrefix(true);
+        lblError.setPaddingLeft(44);
+        insert(icon, 0);
+    }
+
+    @Override
+    public void setIconPosition(IconPosition position) {
+        icon.setIconPosition(position);
+    }
+
+    @Override
+    public void setIconSize(IconSize size) {
+        icon.setIconSize(size);
+    }
+
+    @Override
+    public void setIconFontSize(double size, Style.Unit unit) {
+        icon.setIconFontSize(size, unit);
+    }
+
+    @Override
+    public void setIconColor(String iconColor) {
+        icon.setIconColor(iconColor);
+    }
+
+    @Override
+    public void setIconPrefix(boolean prefix) {
+        icon.setIconPrefix(prefix);
+    }
+
+    @Override
+    public boolean isIconPrefix() {
+        return icon.isIconPrefix();
+    }
 }