1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4  * License, v. 2.0. If a copy of the MPL was not distributed with this
5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6 
7 #ifndef mozilla_dom_HTMLMeterElement_h
8 #define mozilla_dom_HTMLMeterElement_h
9 
10 #include "mozilla/Attributes.h"
11 #include "nsGenericHTMLElement.h"
12 #include "nsAttrValue.h"
13 #include "nsAttrValueInlines.h"
14 #include "nsAlgorithm.h"
15 #include <algorithm>
16 
17 namespace mozilla {
18 namespace dom {
19 
20 class HTMLMeterElement final : public nsGenericHTMLElement {
21  public:
22   explicit HTMLMeterElement(
23       already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
24 
25   virtual EventStates IntrinsicState() const override;
26 
27   nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;
28 
29   virtual bool ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
30                               const nsAString& aValue,
31                               nsIPrincipal* aMaybeScriptedPrincipal,
32                               nsAttrValue& aResult) override;
33 
34   // WebIDL
35 
36   /* @return the value */
37   double Value() const;
SetValue(double aValue,ErrorResult & aRv)38   void SetValue(double aValue, ErrorResult& aRv) {
39     SetDoubleAttr(nsGkAtoms::value, aValue, aRv);
40   }
41 
42   /* @return the minimum value */
43   double Min() const;
SetMin(double aValue,ErrorResult & aRv)44   void SetMin(double aValue, ErrorResult& aRv) {
45     SetDoubleAttr(nsGkAtoms::min, aValue, aRv);
46   }
47 
48   /* @return the maximum value */
49   double Max() const;
SetMax(double aValue,ErrorResult & aRv)50   void SetMax(double aValue, ErrorResult& aRv) {
51     SetDoubleAttr(nsGkAtoms::max, aValue, aRv);
52   }
53 
54   /* @return the low value */
55   double Low() const;
SetLow(double aValue,ErrorResult & aRv)56   void SetLow(double aValue, ErrorResult& aRv) {
57     SetDoubleAttr(nsGkAtoms::low, aValue, aRv);
58   }
59 
60   /* @return the high value */
61   double High() const;
SetHigh(double aValue,ErrorResult & aRv)62   void SetHigh(double aValue, ErrorResult& aRv) {
63     SetDoubleAttr(nsGkAtoms::high, aValue, aRv);
64   }
65 
66   /* @return the optimum value */
67   double Optimum() const;
SetOptimum(double aValue,ErrorResult & aRv)68   void SetOptimum(double aValue, ErrorResult& aRv) {
69     SetDoubleAttr(nsGkAtoms::optimum, aValue, aRv);
70   }
71 
72  protected:
73   virtual ~HTMLMeterElement();
74 
75   virtual JSObject* WrapNode(JSContext* aCx,
76                              JS::Handle<JSObject*> aGivenProto) override;
77 
78  private:
79   static const double kDefaultValue;
80   static const double kDefaultMin;
81   static const double kDefaultMax;
82 
83   /**
84    * Returns the optimum state of the element.
85    * NS_EVENT_STATE_OPTIMUM if the actual value is in the optimum region.
86    * NS_EVENT_STATE_SUB_OPTIMUM if the actual value is in the sub-optimal
87    *                            region.
88    * NS_EVENT_STATE_SUB_SUB_OPTIMUM if the actual value is in the
89    *                                sub-sub-optimal region.
90    *
91    * @return the optimum state of the element.
92    */
93   EventStates GetOptimumState() const;
94 };
95 
96 }  // namespace dom
97 }  // namespace mozilla
98 
99 #endif  // mozilla_dom_HTMLMeterElement_h
100