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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#ifndef nsIFormControl_h___
#define nsIFormControl_h___
#include "mozilla/EventForwards.h"
#include "mozilla/StaticPrefs_dom.h"
#include "nsISupports.h"
class nsINode;
namespace mozilla {
class PresState;
namespace dom {
class Element;
class EventTarget;
class FormData;
class HTMLFieldSetElement;
class HTMLFormElement;
} // namespace dom
} // namespace mozilla
// Elements with different types, the value is used as a mask.
// When changing the order, adding or removing elements, be sure to update
// the static_assert checks accordingly.
constexpr uint8_t kFormControlButtonElementMask = 0x40; // 0b01000000
constexpr uint8_t kFormControlInputElementMask = 0x80; // 0b10000000
enum class FormControlType : uint8_t {
Fieldset = 1,
Output,
Select,
Textarea,
Object,
FormAssociatedCustomElement,
LastWithoutSubtypes = FormAssociatedCustomElement,
ButtonButton = kFormControlButtonElementMask + 1,
ButtonReset,
ButtonSubmit,
LastButtonElement = ButtonSubmit,
InputButton = kFormControlInputElementMask + 1,
InputCheckbox,
InputColor,
InputDate,
InputEmail,
InputFile,
InputHidden,
InputReset,
InputImage,
InputMonth,
InputNumber,
InputPassword,
InputRadio,
InputSearch,
InputSubmit,
InputTel,
InputText,
InputTime,
InputUrl,
InputRange,
InputWeek,
InputDatetimeLocal,
LastInputElement = InputDatetimeLocal,
};
static_assert(uint8_t(FormControlType::LastWithoutSubtypes) <
kFormControlButtonElementMask,
"Too many FormControlsTypes without sub-types");
static_assert(uint8_t(FormControlType::LastButtonElement) <
kFormControlInputElementMask,
"Too many ButtonElementTypes");
static_assert(uint32_t(FormControlType::LastInputElement) < (1 << 8),
"Too many form control types");
#define NS_IFORMCONTROL_IID \
{ \
0x4b89980c, 0x4dcd, 0x428f, { \
0xb7, 0xad, 0x43, 0x5b, 0x93, 0x29, 0x79, 0xec \
} \
}
/**
* Interface which all form controls (e.g. buttons, checkboxes, text,
* radio buttons, select, etc) implement in addition to their dom specific
* interface.
*/
class nsIFormControl : public nsISupports {
public:
nsIFormControl(FormControlType aType) : mType(aType) {}
NS_DECLARE_STATIC_IID_ACCESSOR(NS_IFORMCONTROL_IID)
static nsIFormControl* FromEventTarget(mozilla::dom::EventTarget* aTarget);
static nsIFormControl* FromEventTargetOrNull(
mozilla::dom::EventTarget* aTarget);
static const nsIFormControl* FromEventTarget(
const mozilla::dom::EventTarget* aTarget);
static const nsIFormControl* FromEventTargetOrNull(
const mozilla::dom::EventTarget* aTarget);
static nsIFormControl* FromNode(nsINode* aNode);
static nsIFormControl* FromNodeOrNull(nsINode* aNode);
static const nsIFormControl* FromNode(const nsINode* aNode);
static const nsIFormControl* FromNodeOrNull(const nsINode* aNode);
/**
* Get the fieldset for this form control.
* @return the fieldset
*/
virtual mozilla::dom::HTMLFieldSetElement* GetFieldSet() = 0;
/**
* Get the form for this form control.
* @return the form
*/
virtual mozilla::dom::HTMLFormElement* GetForm() const = 0;
/**
* Set the form for this form control.
* @param aForm the form. This must not be null.
*
* @note that when setting the form the control is not added to the
* form. It adds itself when it gets bound to the tree thereafter,
* so that it can be properly sorted with the other controls in the
* form.
*/
virtual void SetForm(mozilla::dom::HTMLFormElement* aForm) = 0;
/**
* Tell the control to forget about its form.
*
* @param aRemoveFromForm set false if you do not want this element removed
* from the form. (Used by nsFormControlList::Clear())
* @param aUnbindOrDelete set true if the element is being deleted or unbound
* from tree.
*/
virtual void ClearForm(bool aRemoveFromForm, bool aUnbindOrDelete) = 0;
/**
* Get the type of this control as an int (see NS_FORM_* above)
* @return the type of this control
*/
FormControlType ControlType() const { return mType; }
/**
* Reset this form control (as it should be when the user clicks the Reset
* button)
*/
NS_IMETHOD Reset() = 0;
/**
* Tells the form control to submit its names and values to the form data
* object
*
* @param aFormData the form data to notify of names/values/files to submit
*/
NS_IMETHOD
SubmitNamesValues(mozilla::dom::FormData* aFormData) = 0;
/**
* Returns whether this is a control which submits the form when activated by
* the user.
* @return whether this is a submit control.
*/
inline bool IsSubmitControl() const;
/**
* Returns whether this is a text control.
* @param aExcludePassword to have NS_FORM_INPUT_PASSWORD returning false.
* @return whether this is a text control.
*/
inline bool IsTextControl(bool aExcludePassword) const;
/**
* Returns whether this is a single line text control.
* @param aExcludePassword to have NS_FORM_INPUT_PASSWORD returning false.
* @return whether this is a single line text control.
*/
inline bool IsSingleLineTextControl(bool aExcludePassword) const;
/**
* Returns whether this is a submittable form control.
* @return whether this is a submittable form control.
*/
inline bool IsSubmittableControl() const;
/**
*/
inline bool IsConceptButton() const;
/**
* Returns whether this is an ordinal button or a concept button that has no
* form associated.
*/
inline bool IsButtonControl() const;
/**
* Returns whether this form control can have draggable children.
* @return whether this form control can have draggable children.
*/
inline bool AllowDraggableChildren() const;
// Returns a number for this form control that is unique within its
// owner document. This is used by nsContentUtils::GenerateStateKey
// to identify form controls that are inserted into the document by
// the parser. -1 is returned for form controls with no state or
// which were inserted into the document by some other means than
// the parser from the network.
virtual int32_t GetParserInsertedControlNumberForStateKey() const {
return -1;
};
protected:
/**
* Returns whether mType corresponds to a single line text control type.
* @param aExcludePassword to have NS_FORM_INPUT_PASSWORD ignored.
* @param aType the type to be tested.
* @return whether mType corresponds to a single line text control type.
*/
inline static bool IsSingleLineTextControl(bool aExcludePassword,
FormControlType);
inline static bool IsButtonElement(FormControlType aType) {
return uint8_t(aType) & kFormControlButtonElementMask;
}
inline static bool IsInputElement(FormControlType aType) {
return uint8_t(aType) & kFormControlInputElementMask;
}
FormControlType mType;
};
bool nsIFormControl::IsSubmitControl() const {
FormControlType type = ControlType();
return type == FormControlType::InputSubmit ||
type == FormControlType::InputImage ||
type == FormControlType::ButtonSubmit;
}
bool nsIFormControl::IsTextControl(bool aExcludePassword) const {
FormControlType type = ControlType();
return type == FormControlType::Textarea ||
IsSingleLineTextControl(aExcludePassword, type);
}
bool nsIFormControl::IsSingleLineTextControl(bool aExcludePassword) const {
return IsSingleLineTextControl(aExcludePassword, ControlType());
}
/*static*/
bool nsIFormControl::IsSingleLineTextControl(bool aExcludePassword,
FormControlType aType) {
switch (aType) {
case FormControlType::InputText:
case FormControlType::InputEmail:
case FormControlType::InputSearch:
case FormControlType::InputTel:
case FormControlType::InputUrl:
case FormControlType::InputNumber:
case FormControlType::InputMonth:
case FormControlType::InputWeek:
return true;
case FormControlType::InputPassword:
return !aExcludePassword;
default:
return false;
}
}
bool nsIFormControl::IsSubmittableControl() const {
auto type = ControlType();
return type == FormControlType::Object || type == FormControlType::Textarea ||
type == FormControlType::Select || IsButtonElement(type) ||
IsInputElement(type);
}
bool nsIFormControl::IsConceptButton() const {
auto type = ControlType();
return IsSubmitControl() || type == FormControlType::InputReset ||
type == FormControlType::InputButton || IsButtonElement(type);
}
bool nsIFormControl::IsButtonControl() const {
return IsConceptButton() && (!GetForm() || !IsSubmitControl());
}
bool nsIFormControl::AllowDraggableChildren() const {
auto type = ControlType();
return type == FormControlType::Object || type == FormControlType::Fieldset ||
type == FormControlType::Output;
}
NS_DEFINE_STATIC_IID_ACCESSOR(nsIFormControl, NS_IFORMCONTROL_IID)
#endif /* nsIFormControl_h___ */