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nsNumberControlFrame.h (2902B)

      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 nsNumberControlFrame_h__
      8 #define nsNumberControlFrame_h__
      9 
     10 #include "nsCOMPtr.h"
     11 #include "nsContainerFrame.h"
     12 #include "nsIAnonymousContentCreator.h"
     13 #include "nsTextControlFrame.h"
     14 
     15 class nsPresContext;
     16 
     17 namespace mozilla {
     18 enum class PseudoStyleType : uint8_t;
     19 class PresShell;
     20 class WidgetEvent;
     21 class WidgetGUIEvent;
     22 namespace dom {
     23 class HTMLInputElement;
     24 }  // namespace dom
     25 }  // namespace mozilla
     26 
     27 /**
     28 * This frame type is used for <input type=number>.
     29 *
     30 * TODO(emilio): Maybe merge with nsTextControlFrame?
     31 */
     32 class nsNumberControlFrame final : public nsTextControlFrame {
     33  friend nsIFrame* NS_NewNumberControlFrame(mozilla::PresShell* aPresShell,
     34                                            ComputedStyle* aStyle);
     35 
     36  typedef mozilla::PseudoStyleType PseudoStyleType;
     37  typedef mozilla::dom::Element Element;
     38  typedef mozilla::dom::HTMLInputElement HTMLInputElement;
     39  typedef mozilla::WidgetEvent WidgetEvent;
     40  typedef mozilla::WidgetGUIEvent WidgetGUIEvent;
     41 
     42  explicit nsNumberControlFrame(ComputedStyle* aStyle,
     43                                nsPresContext* aPresContext);
     44 
     45 public:
     46  NS_DECL_QUERYFRAME
     47  NS_DECL_FRAMEARENA_HELPERS(nsNumberControlFrame)
     48 
     49 #ifdef ACCESSIBILITY
     50  mozilla::a11y::AccType AccessibleType() override;
     51 #endif
     52 
     53  // nsIAnonymousContentCreator
     54  nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements) override;
     55 
     56 #ifdef DEBUG_FRAME_DUMP
     57  nsresult GetFrameName(nsAString& aResult) const override {
     58    return MakeFrameName(u"NumberControl"_ns, aResult);
     59  }
     60 #endif
     61 
     62  /**
     63   * If the frame is the frame for an nsNumberControlFrame's up or down spin
     64   * button, returns the nsNumberControlFrame. Else returns nullptr.
     65   */
     66  static nsNumberControlFrame* GetNumberControlFrameForSpinButton(
     67      nsIFrame* aFrame);
     68 
     69  enum SpinButtonEnum { eSpinButtonNone, eSpinButtonUp, eSpinButtonDown };
     70 
     71  /**
     72   * Returns one of the SpinButtonEnum values to depending on whether the
     73   * pointer event is over the spin-up button, the spin-down button, or
     74   * neither.
     75   */
     76  int32_t GetSpinButtonForPointerEvent(WidgetGUIEvent* aEvent) const;
     77 
     78  void SpinnerStateChanged() const;
     79 
     80  bool SpinnerUpButtonIsDepressed() const;
     81  bool SpinnerDownButtonIsDepressed() const;
     82 
     83  /**
     84   * Our element had HTMLInputElement::Select() called on it.
     85   */
     86  void HandleSelectCall();
     87 
     88  bool ShouldUseNativeStyleForSpinner() const;
     89 
     90 private:
     91  // See nsNumberControlFrame::CreateAnonymousContent for a description of
     92  // these.
     93  nsCOMPtr<Element> mSpinUp;
     94  nsCOMPtr<Element> mSpinDown;
     95 };
     96 
     97 #endif  // nsNumberControlFrame_h__