forked from mirrors/gecko-dev
d2154fae15
For Event-based form participation specification PR: https://github.com/whatwg/html/pull/4239 Differential Revision: https://phabricator.services.mozilla.com/D43986 --HG-- extra : moz-landing-system : lando
627 lines
22 KiB
C++
627 lines
22 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_HTMLFormElement_h
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#define mozilla_dom_HTMLFormElement_h
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#include "mozilla/AsyncEventDispatcher.h"
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#include "mozilla/Attributes.h"
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#include "nsAutoPtr.h"
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#include "nsCOMPtr.h"
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#include "nsIForm.h"
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#include "nsIFormControl.h"
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#include "nsGenericHTMLElement.h"
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#include "nsIWebProgressListener.h"
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#include "nsIRadioGroupContainer.h"
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#include "nsIWeakReferenceUtils.h"
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#include "nsThreadUtils.h"
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#include "nsInterfaceHashtable.h"
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#include "nsRefPtrHashtable.h"
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#include "nsDataHashtable.h"
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#include "jsfriendapi.h" // For js::ExpandoAndGeneration
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class nsIMutableArray;
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class nsIURI;
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namespace mozilla {
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class EventChainPostVisitor;
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class EventChainPreVisitor;
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namespace dom {
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class HTMLFormControlsCollection;
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class HTMLImageElement;
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class FormData;
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class HTMLFormElement final : public nsGenericHTMLElement,
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public nsIWebProgressListener,
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public nsIForm,
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public nsIRadioGroupContainer {
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friend class HTMLFormControlsCollection;
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public:
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NS_IMPL_FROMNODE_HTML_WITH_TAG(HTMLFormElement, form)
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explicit HTMLFormElement(
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
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enum { FORM_CONTROL_LIST_HASHTABLE_LENGTH = 8 };
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// nsISupports
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NS_DECL_ISUPPORTS_INHERITED
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// nsIWebProgressListener
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NS_DECL_NSIWEBPROGRESSLISTENER
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// nsIForm
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NS_IMETHOD_(nsIFormControl*) GetElementAt(int32_t aIndex) const override;
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NS_IMETHOD_(uint32_t) GetElementCount() const override;
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NS_IMETHOD_(int32_t) IndexOfControl(nsIFormControl* aControl) override;
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NS_IMETHOD_(nsIFormControl*) GetDefaultSubmitElement() const override;
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// nsIRadioGroupContainer
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void SetCurrentRadioButton(const nsAString& aName,
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HTMLInputElement* aRadio) override;
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HTMLInputElement* GetCurrentRadioButton(const nsAString& aName) override;
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NS_IMETHOD GetNextRadioButton(const nsAString& aName, const bool aPrevious,
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HTMLInputElement* aFocusedRadio,
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HTMLInputElement** aRadioOut) override;
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NS_IMETHOD WalkRadioGroup(const nsAString& aName, nsIRadioVisitor* aVisitor,
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bool aFlushContent) override;
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void AddToRadioGroup(const nsAString& aName,
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HTMLInputElement* aRadio) override;
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void RemoveFromRadioGroup(const nsAString& aName,
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HTMLInputElement* aRadio) override;
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virtual uint32_t GetRequiredRadioCount(const nsAString& aName) const override;
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virtual void RadioRequiredWillChange(const nsAString& aName,
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bool aRequiredAdded) override;
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virtual bool GetValueMissingState(const nsAString& aName) const override;
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virtual void SetValueMissingState(const nsAString& aName,
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bool aValue) override;
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virtual EventStates IntrinsicState() const override;
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// EventTarget
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virtual void AsyncEventRunning(AsyncEventDispatcher* aEvent) override;
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// nsIContent
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virtual bool ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
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const nsAString& aValue,
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nsIPrincipal* aMaybeScriptedPrincipal,
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nsAttrValue& aResult) override;
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void GetEventTargetParent(EventChainPreVisitor& aVisitor) override;
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void WillHandleEvent(EventChainPostVisitor& aVisitor) override;
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virtual nsresult PostHandleEvent(EventChainPostVisitor& aVisitor) override;
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virtual nsresult BindToTree(BindContext&, nsINode& aParent) override;
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virtual void UnbindFromTree(bool aNullParent = true) override;
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virtual nsresult BeforeSetAttr(int32_t aNamespaceID, nsAtom* aName,
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const nsAttrValueOrString* aValue,
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bool aNotify) override;
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virtual nsresult AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
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const nsAttrValue* aValue,
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const nsAttrValue* aOldValue,
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nsIPrincipal* aSubjectPrincipal,
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bool aNotify) override;
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/**
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* Forget all information about the current submission (and the fact that we
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* are currently submitting at all).
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*/
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void ForgetCurrentSubmission();
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virtual nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(HTMLFormElement,
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nsGenericHTMLElement)
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/**
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* Remove an element from this form's list of elements
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*
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* @param aElement the element to remove
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* @param aUpdateValidity If true, updates the form validity.
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* @return NS_OK if the element was successfully removed.
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*/
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nsresult RemoveElement(nsGenericHTMLFormElement* aElement,
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bool aUpdateValidity);
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/**
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* Remove an element from the lookup table maintained by the form.
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* We can't fold this method into RemoveElement() because when
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* RemoveElement() is called it doesn't know if the element is
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* removed because the id attribute has changed, or because the
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* name attribute has changed.
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*
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* @param aElement the element to remove
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* @param aName the name or id of the element to remove
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* @return NS_OK if the element was successfully removed.
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*/
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nsresult RemoveElementFromTable(nsGenericHTMLFormElement* aElement,
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const nsAString& aName);
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/**
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* Add an element to end of this form's list of elements
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*
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* @param aElement the element to add
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* @param aUpdateValidity If true, the form validity will be updated.
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* @param aNotify If true, send DocumentObserver notifications as needed.
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* @return NS_OK if the element was successfully added
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*/
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nsresult AddElement(nsGenericHTMLFormElement* aElement, bool aUpdateValidity,
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bool aNotify);
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/**
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* Add an element to the lookup table maintained by the form.
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*
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* We can't fold this method into AddElement() because when
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* AddElement() is called, the form control has no
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* attributes. The name or id attributes of the form control
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* are used as a key into the table.
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*/
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nsresult AddElementToTable(nsGenericHTMLFormElement* aChild,
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const nsAString& aName);
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/**
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* Remove an image element from this form's list of image elements
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*
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* @param aElement the image element to remove
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* @return NS_OK if the element was successfully removed.
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*/
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nsresult RemoveImageElement(HTMLImageElement* aElement);
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/**
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* Remove an image element from the lookup table maintained by the form.
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* We can't fold this method into RemoveImageElement() because when
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* RemoveImageElement() is called it doesn't know if the element is
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* removed because the id attribute has changed, or because the
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* name attribute has changed.
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*
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* @param aElement the image element to remove
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* @param aName the name or id of the element to remove
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* @return NS_OK if the element was successfully removed.
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*/
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nsresult RemoveImageElementFromTable(HTMLImageElement* aElement,
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const nsAString& aName);
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/**
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* Add an image element to the end of this form's list of image elements
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*
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* @param aElement the element to add
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* @return NS_OK if the element was successfully added
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*/
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nsresult AddImageElement(HTMLImageElement* aElement);
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/**
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* Add an image element to the lookup table maintained by the form.
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*
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* We can't fold this method into AddImageElement() because when
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* AddImageElement() is called, the image attributes can change.
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* The name or id attributes of the image are used as a key into the table.
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*/
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nsresult AddImageElementToTable(HTMLImageElement* aChild,
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const nsAString& aName);
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/**
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* Returns true if implicit submission of this form is disabled. For more
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* on implicit submission see:
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*
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* http://www.whatwg.org/specs/web-apps/current-work/multipage/association-of-controls-and-forms.html#implicit-submission
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*/
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bool ImplicitSubmissionIsDisabled() const;
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/**
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* Check whether a given nsIFormControl is the last single line input control
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* that is not disabled. aControl is expected to not be null.
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*/
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bool IsLastActiveElement(const nsIFormControl* aControl) const;
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/**
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* Check whether a given nsIFormControl is the default submit
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* element. This is different from just comparing to
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* GetDefaultSubmitElement() in certain situations inside an update
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* when GetDefaultSubmitElement() might not be up to date. aControl
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* is expected to not be null.
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*/
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bool IsDefaultSubmitElement(const nsIFormControl* aControl) const;
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/**
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* Flag the form to know that a button or image triggered scripted form
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* submission. In that case the form will defer the submission until the
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* script handler returns and the return value is known.
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*/
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void OnSubmitClickBegin(Element* aOriginatingElement);
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void OnSubmitClickEnd();
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/**
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* This method will update the form validity so the submit controls states
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* will be updated (for -moz-submit-invalid pseudo-class).
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* This method has to be called by form elements whenever their validity state
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* or status regarding constraint validation changes.
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*
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* @note This method isn't used for CheckValidity().
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* @note If an element becomes barred from constraint validation, it has to be
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* considered as valid.
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*
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* @param aElementValidityState the new validity state of the element
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*/
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void UpdateValidity(bool aElementValidityState);
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/**
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* Returns the form validity based on the last UpdateValidity() call.
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*
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* @return Whether the form was valid the last time UpdateValidity() was
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* called.
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*
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* @note This method may not return the *current* validity state!
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*/
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bool GetValidity() const { return !mInvalidElementsCount; }
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/**
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* This method check the form validity and make invalid form elements send
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* invalid event if needed.
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*
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* @return Whether the form is valid.
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*
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* @note Do not call this method if novalidate/formnovalidate is used.
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* @note This method might disappear with bug 592124, hopefuly.
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*/
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bool CheckValidFormSubmission();
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/**
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* Check whether submission can proceed for this form. This basically
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* implements steps 1-4 (more or less) of
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* <https://html.spec.whatwg.org/multipage/forms.html#concept-form-submit>.
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* aSubmitter, if not null, is the "submitter" from that algorithm. Therefore
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* it must be a valid submit control.
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*/
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bool SubmissionCanProceed(Element* aSubmitter);
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/**
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* Contruct the entry list to get their data pumped into the FormData and
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* fire a `formdata` event with the entry list in formData attribute.
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* <https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#constructing-form-data-set>
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*
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* @param aFormData the form data object
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*/
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nsresult ConstructEntryList(FormData* aFormData);
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/**
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* Whether the submission of this form has been ever prevented because of
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* being invalid.
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*
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* @return Whether the submission of this form has been prevented because of
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* being invalid.
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*/
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bool HasEverTriedInvalidSubmit() const { return mEverTriedInvalidSubmit; }
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/**
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* Implements form[name]. Returns form controls in this form with the correct
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* value of the name attribute.
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*/
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already_AddRefed<nsISupports> FindNamedItem(const nsAString& aName,
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nsWrapperCache** aCache);
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// WebIDL
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void GetAcceptCharset(DOMString& aValue) {
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GetHTMLAttr(nsGkAtoms::acceptcharset, aValue);
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}
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void SetAcceptCharset(const nsAString& aValue, ErrorResult& aRv) {
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SetHTMLAttr(nsGkAtoms::acceptcharset, aValue, aRv);
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}
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void GetAction(nsString& aValue);
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void SetAction(const nsAString& aValue, ErrorResult& aRv) {
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SetHTMLAttr(nsGkAtoms::action, aValue, aRv);
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}
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void GetAutocomplete(nsAString& aValue);
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void SetAutocomplete(const nsAString& aValue, ErrorResult& aRv) {
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SetHTMLAttr(nsGkAtoms::autocomplete, aValue, aRv);
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}
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void GetEnctype(nsAString& aValue);
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void SetEnctype(const nsAString& aValue, ErrorResult& aRv) {
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SetHTMLAttr(nsGkAtoms::enctype, aValue, aRv);
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}
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void GetEncoding(nsAString& aValue) { GetEnctype(aValue); }
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void SetEncoding(const nsAString& aValue, ErrorResult& aRv) {
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SetEnctype(aValue, aRv);
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}
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void GetMethod(nsAString& aValue);
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void SetMethod(const nsAString& aValue, ErrorResult& aRv) {
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SetHTMLAttr(nsGkAtoms::method, aValue, aRv);
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}
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void GetName(DOMString& aValue) { GetHTMLAttr(nsGkAtoms::name, aValue); }
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void SetName(const nsAString& aValue, ErrorResult& aRv) {
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SetHTMLAttr(nsGkAtoms::name, aValue, aRv);
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}
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bool NoValidate() const { return GetBoolAttr(nsGkAtoms::novalidate); }
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void SetNoValidate(bool aValue, ErrorResult& aRv) {
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SetHTMLBoolAttr(nsGkAtoms::novalidate, aValue, aRv);
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}
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void GetTarget(DOMString& aValue) { GetHTMLAttr(nsGkAtoms::target, aValue); }
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void SetTarget(const nsAString& aValue, ErrorResult& aRv) {
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SetHTMLAttr(nsGkAtoms::target, aValue, aRv);
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}
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// it's only out-of-line because the class definition is not available in the
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// header
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nsIHTMLCollection* Elements();
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int32_t Length();
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void Submit(ErrorResult& aRv);
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void Reset();
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bool CheckValidity() { return CheckFormValidity(nullptr); }
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bool ReportValidity() { return CheckValidFormSubmission(); }
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Element* IndexedGetter(uint32_t aIndex, bool& aFound);
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already_AddRefed<nsISupports> NamedGetter(const nsAString& aName,
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bool& aFound);
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void GetSupportedNames(nsTArray<nsString>& aRetval);
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static int32_t CompareFormControlPosition(Element* aElement1,
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Element* aElement2,
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const nsIContent* aForm);
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#ifdef DEBUG
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static void AssertDocumentOrder(
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const nsTArray<nsGenericHTMLFormElement*>& aControls, nsIContent* aForm);
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static void AssertDocumentOrder(
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const nsTArray<RefPtr<nsGenericHTMLFormElement>>& aControls,
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nsIContent* aForm);
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#endif
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js::ExpandoAndGeneration mExpandoAndGeneration;
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protected:
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virtual JSObject* WrapNode(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) override;
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void PostPasswordEvent();
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RefPtr<AsyncEventDispatcher> mFormPasswordEventDispatcher;
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class RemoveElementRunnable;
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friend class RemoveElementRunnable;
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class RemoveElementRunnable : public Runnable {
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public:
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explicit RemoveElementRunnable(HTMLFormElement* aForm)
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: Runnable("dom::HTMLFormElement::RemoveElementRunnable"),
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mForm(aForm) {}
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NS_IMETHOD Run() override {
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mForm->HandleDefaultSubmitRemoval();
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return NS_OK;
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}
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private:
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RefPtr<HTMLFormElement> mForm;
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};
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nsresult DoSubmitOrReset(WidgetEvent* aEvent, EventMessage aMessage);
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nsresult DoReset();
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// Async callback to handle removal of our default submit
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void HandleDefaultSubmitRemoval();
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//
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// Submit Helpers
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//
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//
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/**
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* Attempt to submit (submission might be deferred)
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* (called by DoSubmitOrReset)
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*
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* @param aPresContext the presentation context
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* @param aEvent the DOM event that was passed to us for the submit
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*/
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nsresult DoSubmit(WidgetEvent* aEvent);
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/**
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* Prepare the submission object (called by DoSubmit)
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*
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* @param aFormSubmission the submission object
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* @param aEvent the DOM event that was passed to us for the submit
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*/
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nsresult BuildSubmission(HTMLFormSubmission** aFormSubmission,
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WidgetEvent* aEvent);
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/**
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* Perform the submission (called by DoSubmit and FlushPendingSubmission)
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*
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* @param aFormSubmission the submission object
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*/
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nsresult SubmitSubmission(HTMLFormSubmission* aFormSubmission);
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/**
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* Notify any submit observers of the submit.
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*
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* @param aActionURL the URL being submitted to
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* @param aCancelSubmit out param where submit observers can specify that the
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* submit should be cancelled.
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*/
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nsresult NotifySubmitObservers(nsIURI* aActionURL, bool* aCancelSubmit,
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bool aEarlyNotify);
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/**
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* If this form submission is secure -> insecure, ask the user if they want
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* to continue.
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*
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* @param aActionURL the URL being submitted to
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* @param aCancelSubmit out param: will be true if the user wants to cancel
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*/
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nsresult DoSecureToInsecureSubmitCheck(nsIURI* aActionURL,
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bool* aCancelSubmit);
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/**
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* Find form controls in this form with the correct value in the name
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* attribute.
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*/
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already_AddRefed<nsISupports> DoResolveName(const nsAString& aName,
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bool aFlushContent);
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/**
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* Check the form validity following this algorithm:
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* http://www.whatwg.org/specs/web-apps/current-work/#statically-validate-the-constraints
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*
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* @param aInvalidElements [out] parameter containing the list of unhandled
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* invalid controls.
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*
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* @return Whether the form is currently valid.
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*/
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bool CheckFormValidity(nsTArray<RefPtr<Element>>* aInvalidElements) const;
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// Clear the mImageNameLookupTable and mImageElements.
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void Clear();
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// Insert a element into the past names map.
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void AddToPastNamesMap(const nsAString& aName, nsISupports* aChild);
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// Remove the given element from the past names map. The element must be an
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// nsGenericHTMLFormElement or HTMLImageElement.
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void RemoveElementFromPastNamesMap(Element* aElement);
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nsresult AddElementToTableInternal(
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nsInterfaceHashtable<nsStringHashKey, nsISupports>& aTable,
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nsIContent* aChild, const nsAString& aName);
|
|
|
|
nsresult RemoveElementFromTableInternal(
|
|
nsInterfaceHashtable<nsStringHashKey, nsISupports>& aTable,
|
|
nsIContent* aChild, const nsAString& aName);
|
|
|
|
public:
|
|
/**
|
|
* Flush a possible pending submission. If there was a scripted submission
|
|
* triggered by a button or image, the submission was defered. This method
|
|
* forces the pending submission to be submitted. (happens when the handler
|
|
* returns false or there is an action/target change in the script)
|
|
*/
|
|
void FlushPendingSubmission();
|
|
|
|
/**
|
|
* Get the full URL to submit to. Do not submit if the returned URL is null.
|
|
*
|
|
* @param aActionURL the full, unadulterated URL you'll be submitting to [OUT]
|
|
* @param aOriginatingElement the originating element of the form submission
|
|
* [IN]
|
|
*/
|
|
nsresult GetActionURL(nsIURI** aActionURL, Element* aOriginatingElement);
|
|
|
|
// Returns a number for this form 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.
|
|
int32_t GetFormNumberForStateKey();
|
|
|
|
/**
|
|
* Called when we have been cloned and adopted, and the information of the
|
|
* node has been changed.
|
|
*/
|
|
void NodeInfoChanged(Document* aOldDoc) override;
|
|
|
|
protected:
|
|
//
|
|
// Data members
|
|
//
|
|
/** The list of controls (form.elements as well as stuff not in elements) */
|
|
RefPtr<HTMLFormControlsCollection> mControls;
|
|
/** The currently selected radio button of each group */
|
|
nsRefPtrHashtable<nsStringHashKey, HTMLInputElement> mSelectedRadioButtons;
|
|
/** The number of required radio button of each group */
|
|
nsDataHashtable<nsStringCaseInsensitiveHashKey, uint32_t>
|
|
mRequiredRadioButtonCounts;
|
|
/** The value missing state of each group */
|
|
nsDataHashtable<nsStringCaseInsensitiveHashKey, bool>
|
|
mValueMissingRadioGroups;
|
|
|
|
/** The pending submission object */
|
|
nsAutoPtr<HTMLFormSubmission> mPendingSubmission;
|
|
/** The request currently being submitted */
|
|
nsCOMPtr<nsIRequest> mSubmittingRequest;
|
|
/** The web progress object we are currently listening to */
|
|
nsWeakPtr mWebProgress;
|
|
|
|
/** The default submit element -- WEAK */
|
|
nsGenericHTMLFormElement* mDefaultSubmitElement;
|
|
|
|
/** The first submit element in mElements -- WEAK */
|
|
nsGenericHTMLFormElement* mFirstSubmitInElements;
|
|
|
|
/** The first submit element in mNotInElements -- WEAK */
|
|
nsGenericHTMLFormElement* mFirstSubmitNotInElements;
|
|
|
|
// This array holds on to all HTMLImageElement(s).
|
|
// This is needed to properly clean up the bi-directional references
|
|
// (both weak and strong) between the form and its HTMLImageElements.
|
|
|
|
nsTArray<HTMLImageElement*> mImageElements; // Holds WEAK references
|
|
|
|
// A map from an ID or NAME attribute to the HTMLImageElement(s), this
|
|
// hash holds strong references either to the named HTMLImageElement, or
|
|
// to a list of named HTMLImageElement(s), in the case where this hash
|
|
// holds on to a list of named HTMLImageElement(s) the list has weak
|
|
// references to the HTMLImageElement.
|
|
|
|
nsInterfaceHashtable<nsStringHashKey, nsISupports> mImageNameLookupTable;
|
|
|
|
// A map from names to elements that were gotten by those names from this
|
|
// form in that past. See "past names map" in the HTML5 specification.
|
|
|
|
nsInterfaceHashtable<nsStringHashKey, nsISupports> mPastNameLookupTable;
|
|
|
|
/** Keep track of what the popup state was when the submit was initiated */
|
|
PopupBlocker::PopupControlState mSubmitPopupState;
|
|
|
|
/**
|
|
* Number of invalid and candidate for constraint validation elements in the
|
|
* form the last time UpdateValidity has been called.
|
|
* @note Should only be used by UpdateValidity() and GetValidity()!
|
|
*/
|
|
int32_t mInvalidElementsCount;
|
|
|
|
// See GetFormNumberForStateKey.
|
|
int32_t mFormNumber;
|
|
|
|
/** Whether we are currently processing a submit event or not */
|
|
bool mGeneratingSubmit;
|
|
/** Whether we are currently processing a reset event or not */
|
|
bool mGeneratingReset;
|
|
/** Whether we are submitting currently */
|
|
bool mIsSubmitting;
|
|
/** Whether the submission is to be deferred in case a script triggers it */
|
|
bool mDeferSubmission;
|
|
/** Whether we notified NS_FORMSUBMIT_SUBJECT listeners already */
|
|
bool mNotifiedObservers;
|
|
/** If we notified the listeners early, what was the result? */
|
|
bool mNotifiedObserversResult;
|
|
/**
|
|
* Whether the submission of this form has been ever prevented because of
|
|
* being invalid.
|
|
*/
|
|
bool mEverTriedInvalidSubmit;
|
|
/** Whether we are constructing entry list */
|
|
bool mIsConstructingEntryList;
|
|
|
|
private:
|
|
NotNull<const Encoding*> GetSubmitEncoding();
|
|
~HTMLFormElement();
|
|
};
|
|
|
|
} // namespace dom
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif // mozilla_dom_HTMLFormElement_h
|