/* -*- 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 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #include "mozilla/dom/HTMLSelectElement.h" #include "mozAutoDocUpdate.h" #include "mozilla/Attributes.h" #include "mozilla/BasicEvents.h" #include "mozilla/EventDispatcher.h" #include "mozilla/EventStates.h" #include "mozilla/dom/Element.h" #include "mozilla/dom/HTMLFormSubmission.h" #include "mozilla/dom/HTMLOptGroupElement.h" #include "mozilla/dom/HTMLOptionElement.h" #include "mozilla/dom/HTMLSelectElementBinding.h" #include "mozilla/dom/UnionTypes.h" #include "nsContentCreatorFunctions.h" #include "nsContentList.h" #include "nsError.h" #include "nsGkAtoms.h" #include "nsIComboboxControlFrame.h" #include "nsIDocument.h" #include "nsIFormControlFrame.h" #include "nsIForm.h" #include "nsIFormProcessor.h" #include "nsIFrame.h" #include "nsIListControlFrame.h" #include "nsISelectControlFrame.h" #include "nsLayoutUtils.h" #include "nsMappedAttributes.h" #include "nsPresState.h" #include "nsRuleData.h" #include "nsServiceManagerUtils.h" #include "nsStyleConsts.h" #include "nsTextNode.h" NS_IMPL_NS_NEW_HTML_ELEMENT_CHECK_PARSER(Select) namespace mozilla { namespace dom { NS_IMPL_ISUPPORTS(SelectState, SelectState) //---------------------------------------------------------------------- // // SafeOptionListMutation // SafeOptionListMutation::SafeOptionListMutation(nsIContent* aSelect, nsIContent* aParent, nsIContent* aKid, uint32_t aIndex, bool aNotify) : mSelect(HTMLSelectElement::FromContentOrNull(aSelect)) , mTopLevelMutation(false) , mNeedsRebuild(false) { if (mSelect) { mTopLevelMutation = !mSelect->mMutating; if (mTopLevelMutation) { mSelect->mMutating = true; } else { // This is very unfortunate, but to handle mutation events properly, // option list must be up-to-date before inserting or removing options. // Fortunately this is called only if mutation event listener // adds or removes options. mSelect->RebuildOptionsArray(aNotify); } nsresult rv; if (aKid) { rv = mSelect->WillAddOptions(aKid, aParent, aIndex, aNotify); } else { rv = mSelect->WillRemoveOptions(aParent, aIndex, aNotify); } mNeedsRebuild = NS_FAILED(rv); } } SafeOptionListMutation::~SafeOptionListMutation() { if (mSelect) { if (mNeedsRebuild || (mTopLevelMutation && mGuard.Mutated(1))) { mSelect->RebuildOptionsArray(true); } if (mTopLevelMutation) { mSelect->mMutating = false; } #ifdef DEBUG mSelect->VerifyOptionsArray(); #endif } } //---------------------------------------------------------------------- // // HTMLSelectElement // // construction, destruction HTMLSelectElement::HTMLSelectElement(already_AddRefed& aNodeInfo, FromParser aFromParser) : nsGenericHTMLFormElementWithState(aNodeInfo), mOptions(new HTMLOptionsCollection(this)), mAutocompleteAttrState(nsContentUtils::eAutocompleteAttrState_Unknown), mIsDoneAddingChildren(!aFromParser), mDisabledChanged(false), mMutating(false), mInhibitStateRestoration(!!(aFromParser & FROM_PARSER_FRAGMENT)), mSelectionHasChanged(false), mDefaultSelectionSet(false), mCanShowInvalidUI(true), mCanShowValidUI(true), mNonOptionChildren(0), mOptGroupCount(0), mSelectedIndex(-1) { SetHasWeirdParserInsertionMode(); // DoneAddingChildren() will be called later if it's from the parser, // otherwise it is // Set up our default state: enabled, optional, and valid. AddStatesSilently(NS_EVENT_STATE_ENABLED | NS_EVENT_STATE_OPTIONAL | NS_EVENT_STATE_VALID); } HTMLSelectElement::~HTMLSelectElement() { mOptions->DropReference(); } // ISupports NS_IMPL_CYCLE_COLLECTION_CLASS(HTMLSelectElement) NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(HTMLSelectElement, nsGenericHTMLFormElementWithState) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mValidity) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mOptions) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSelectedOptions) NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(HTMLSelectElement, nsGenericHTMLFormElementWithState) NS_IMPL_CYCLE_COLLECTION_UNLINK(mValidity) NS_IMPL_CYCLE_COLLECTION_UNLINK(mSelectedOptions) NS_IMPL_CYCLE_COLLECTION_UNLINK_END NS_IMPL_ADDREF_INHERITED(HTMLSelectElement, Element) NS_IMPL_RELEASE_INHERITED(HTMLSelectElement, Element) // QueryInterface implementation for HTMLSelectElement NS_INTERFACE_TABLE_HEAD_CYCLE_COLLECTION_INHERITED(HTMLSelectElement) NS_INTERFACE_TABLE_INHERITED(HTMLSelectElement, nsIDOMHTMLSelectElement, nsIConstraintValidation) NS_INTERFACE_TABLE_TAIL_INHERITING(nsGenericHTMLFormElementWithState) // nsIDOMHTMLSelectElement NS_IMPL_ELEMENT_CLONE(HTMLSelectElement) // nsIConstraintValidation NS_IMPL_NSICONSTRAINTVALIDATION_EXCEPT_SETCUSTOMVALIDITY(HTMLSelectElement) NS_IMETHODIMP HTMLSelectElement::SetCustomValidity(const nsAString& aError) { nsIConstraintValidation::SetCustomValidity(aError); UpdateState(true); return NS_OK; } void HTMLSelectElement::GetAutocomplete(DOMString& aValue) { const nsAttrValue* attributeVal = GetParsedAttr(nsGkAtoms::autocomplete); mAutocompleteAttrState = nsContentUtils::SerializeAutocompleteAttribute(attributeVal, aValue, mAutocompleteAttrState); } NS_IMETHODIMP HTMLSelectElement::GetForm(nsIDOMHTMLFormElement** aForm) { return nsGenericHTMLFormElementWithState::GetForm(aForm); } nsresult HTMLSelectElement::InsertChildAt(nsIContent* aKid, uint32_t aIndex, bool aNotify) { SafeOptionListMutation safeMutation(this, this, aKid, aIndex, aNotify); nsresult rv = nsGenericHTMLFormElementWithState::InsertChildAt(aKid, aIndex, aNotify); if (NS_FAILED(rv)) { safeMutation.MutationFailed(); } return rv; } void HTMLSelectElement::RemoveChildAt(uint32_t aIndex, bool aNotify) { SafeOptionListMutation safeMutation(this, this, nullptr, aIndex, aNotify); nsGenericHTMLFormElementWithState::RemoveChildAt(aIndex, aNotify); } void HTMLSelectElement::InsertOptionsIntoList(nsIContent* aOptions, int32_t aListIndex, int32_t aDepth, bool aNotify) { MOZ_ASSERT(aDepth == 0 || aDepth == 1); int32_t insertIndex = aListIndex; HTMLOptionElement* optElement = HTMLOptionElement::FromContent(aOptions); if (optElement) { mOptions->InsertOptionAt(optElement, insertIndex); insertIndex++; } else if (aDepth == 0) { // If it's at the top level, then we just found out there are non-options // at the top level, which will throw off the insert count mNonOptionChildren++; // Deal with optgroups if (aOptions->IsHTMLElement(nsGkAtoms::optgroup)) { mOptGroupCount++; for (nsIContent* child = aOptions->GetFirstChild(); child; child = child->GetNextSibling()) { optElement = HTMLOptionElement::FromContent(child); if (optElement) { mOptions->InsertOptionAt(optElement, insertIndex); insertIndex++; } } } } // else ignore even if optgroup; we want to ignore nested optgroups. // Deal with the selected list if (insertIndex - aListIndex) { // Fix the currently selected index if (aListIndex <= mSelectedIndex) { mSelectedIndex += (insertIndex - aListIndex); SetSelectionChanged(true, aNotify); } // Get the frame stuff for notification. No need to flush here // since if there's no frame for the select yet the select will // get into the right state once it's created. nsISelectControlFrame* selectFrame = nullptr; nsWeakFrame weakSelectFrame; bool didGetFrame = false; // Actually select the options if the added options warrant it for (int32_t i = aListIndex; i < insertIndex; i++) { // Notify the frame that the option is added if (!didGetFrame || (selectFrame && !weakSelectFrame.IsAlive())) { selectFrame = GetSelectFrame(); weakSelectFrame = do_QueryFrame(selectFrame); didGetFrame = true; } if (selectFrame) { selectFrame->AddOption(i); } RefPtr option = Item(i); if (option && option->Selected()) { // Clear all other options if (!HasAttr(kNameSpaceID_None, nsGkAtoms::multiple)) { uint32_t mask = IS_SELECTED | CLEAR_ALL | SET_DISABLED | NOTIFY; SetOptionsSelectedByIndex(i, i, mask); } // This is sort of a hack ... we need to notify that the option was // set and change selectedIndex even though we didn't really change // its value. OnOptionSelected(selectFrame, i, true, false, false); } } CheckSelectSomething(aNotify); } } nsresult HTMLSelectElement::RemoveOptionsFromList(nsIContent* aOptions, int32_t aListIndex, int32_t aDepth, bool aNotify) { MOZ_ASSERT(aDepth == 0 || aDepth == 1); int32_t numRemoved = 0; HTMLOptionElement* optElement = HTMLOptionElement::FromContent(aOptions); if (optElement) { if (mOptions->ItemAsOption(aListIndex) != optElement) { NS_ERROR("wrong option at index"); return NS_ERROR_UNEXPECTED; } mOptions->RemoveOptionAt(aListIndex); numRemoved++; } else if (aDepth == 0) { // Yay, one less artifact at the top level. mNonOptionChildren--; // Recurse down deeper for options if (mOptGroupCount && aOptions->IsHTMLElement(nsGkAtoms::optgroup)) { mOptGroupCount--; for (nsIContent* child = aOptions->GetFirstChild(); child; child = child->GetNextSibling()) { optElement = HTMLOptionElement::FromContent(child); if (optElement) { if (mOptions->ItemAsOption(aListIndex) != optElement) { NS_ERROR("wrong option at index"); return NS_ERROR_UNEXPECTED; } mOptions->RemoveOptionAt(aListIndex); numRemoved++; } } } } // else don't check for an optgroup; we want to ignore nested optgroups if (numRemoved) { // Tell the widget we removed the options nsISelectControlFrame* selectFrame = GetSelectFrame(); if (selectFrame) { nsAutoScriptBlocker scriptBlocker; for (int32_t i = aListIndex; i < aListIndex + numRemoved; ++i) { selectFrame->RemoveOption(i); } } // Fix the selected index if (aListIndex <= mSelectedIndex) { if (mSelectedIndex < (aListIndex+numRemoved)) { // aListIndex <= mSelectedIndex < aListIndex+numRemoved // Find a new selected index if it was one of the ones removed. FindSelectedIndex(aListIndex, aNotify); } else { // Shift the selected index if something in front of it was removed // aListIndex+numRemoved <= mSelectedIndex mSelectedIndex -= numRemoved; SetSelectionChanged(true, aNotify); } } // Select something in case we removed the selected option on a // single select if (!CheckSelectSomething(aNotify) && mSelectedIndex == -1) { // Update the validity state in case of we've just removed the last // option. UpdateValueMissingValidityState(); UpdateState(aNotify); } } return NS_OK; } // XXXldb Doing the processing before the content nodes have been added // to the document (as the name of this function seems to require, and // as the callers do), is highly unusual. Passing around unparented // content to other parts of the app can make those things think the // options are the root content node. NS_IMETHODIMP HTMLSelectElement::WillAddOptions(nsIContent* aOptions, nsIContent* aParent, int32_t aContentIndex, bool aNotify) { if (this != aParent && this != aParent->GetParent()) { return NS_OK; } int32_t level = aParent == this ? 0 : 1; // Get the index where the options will be inserted int32_t ind = -1; if (!mNonOptionChildren) { // If there are no artifacts, aContentIndex == ind ind = aContentIndex; } else { // If there are artifacts, we have to get the index of the option the // hard way int32_t children = aParent->GetChildCount(); if (aContentIndex >= children) { // If the content insert is after the end of the parent, then we want to get // the next index *after* the parent and insert there. ind = GetOptionIndexAfter(aParent); } else { // If the content insert is somewhere in the middle of the container, then // we want to get the option currently at the index and insert in front of // that. nsIContent* currentKid = aParent->GetChildAt(aContentIndex); NS_ASSERTION(currentKid, "Child not found!"); if (currentKid) { ind = GetOptionIndexAt(currentKid); } else { ind = -1; } } } InsertOptionsIntoList(aOptions, ind, level, aNotify); return NS_OK; } NS_IMETHODIMP HTMLSelectElement::WillRemoveOptions(nsIContent* aParent, int32_t aContentIndex, bool aNotify) { if (this != aParent && this != aParent->GetParent()) { return NS_OK; } int32_t level = this == aParent ? 0 : 1; // Get the index where the options will be removed nsIContent* currentKid = aParent->GetChildAt(aContentIndex); if (currentKid) { int32_t ind; if (!mNonOptionChildren) { // If there are no artifacts, aContentIndex == ind ind = aContentIndex; } else { // If there are artifacts, we have to get the index of the option the // hard way ind = GetFirstOptionIndex(currentKid); } if (ind != -1) { nsresult rv = RemoveOptionsFromList(currentKid, ind, level, aNotify); NS_ENSURE_SUCCESS(rv, rv); } } return NS_OK; } int32_t HTMLSelectElement::GetOptionIndexAt(nsIContent* aOptions) { // Search this node and below. // If not found, find the first one *after* this node. int32_t retval = GetFirstOptionIndex(aOptions); if (retval == -1) { retval = GetOptionIndexAfter(aOptions); } return retval; } int32_t HTMLSelectElement::GetOptionIndexAfter(nsIContent* aOptions) { // - If this is the select, the next option is the last. // - If not, search all the options after aOptions and up to the last option // in the parent. // - If it's not there, search for the first option after the parent. if (aOptions == this) { return Length(); } int32_t retval = -1; nsCOMPtr parent = aOptions->GetParent(); if (parent) { int32_t index = parent->IndexOf(aOptions); int32_t count = parent->GetChildCount(); retval = GetFirstChildOptionIndex(parent, index+1, count); if (retval == -1) { retval = GetOptionIndexAfter(parent); } } return retval; } int32_t HTMLSelectElement::GetFirstOptionIndex(nsIContent* aOptions) { int32_t listIndex = -1; HTMLOptionElement* optElement = HTMLOptionElement::FromContent(aOptions); if (optElement) { GetOptionIndex(optElement, 0, true, &listIndex); return listIndex; } listIndex = GetFirstChildOptionIndex(aOptions, 0, aOptions->GetChildCount()); return listIndex; } int32_t HTMLSelectElement::GetFirstChildOptionIndex(nsIContent* aOptions, int32_t aStartIndex, int32_t aEndIndex) { int32_t retval = -1; for (int32_t i = aStartIndex; i < aEndIndex; ++i) { retval = GetFirstOptionIndex(aOptions->GetChildAt(i)); if (retval != -1) { break; } } return retval; } nsISelectControlFrame* HTMLSelectElement::GetSelectFrame() { nsIFormControlFrame* form_control_frame = GetFormControlFrame(false); nsISelectControlFrame* select_frame = nullptr; if (form_control_frame) { select_frame = do_QueryFrame(form_control_frame); } return select_frame; } void HTMLSelectElement::Add(const HTMLOptionElementOrHTMLOptGroupElement& aElement, const Nullable& aBefore, ErrorResult& aRv) { nsGenericHTMLElement& element = aElement.IsHTMLOptionElement() ? static_cast(aElement.GetAsHTMLOptionElement()) : static_cast(aElement.GetAsHTMLOptGroupElement()); if (aBefore.IsNull()) { Add(element, static_cast(nullptr), aRv); } else if (aBefore.Value().IsHTMLElement()) { Add(element, &aBefore.Value().GetAsHTMLElement(), aRv); } else { Add(element, aBefore.Value().GetAsLong(), aRv); } } void HTMLSelectElement::Add(nsGenericHTMLElement& aElement, nsGenericHTMLElement* aBefore, ErrorResult& aError) { if (!aBefore) { Element::AppendChild(aElement, aError); return; } // Just in case we're not the parent, get the parent of the reference // element nsCOMPtr parent = aBefore->Element::GetParentNode(); if (!parent || !nsContentUtils::ContentIsDescendantOf(parent, this)) { // NOT_FOUND_ERR: Raised if before is not a descendant of the SELECT // element. aError.Throw(NS_ERROR_DOM_NOT_FOUND_ERR); return; } // If the before parameter is not null, we are equivalent to the // insertBefore method on the parent of before. parent->InsertBefore(aElement, aBefore, aError); } NS_IMETHODIMP HTMLSelectElement::Add(nsIDOMHTMLElement* aElement, nsIVariant* aBefore) { uint16_t dataType; nsresult rv = aBefore->GetDataType(&dataType); NS_ENSURE_SUCCESS(rv, rv); nsCOMPtr element = do_QueryInterface(aElement); nsGenericHTMLElement* htmlElement = nsGenericHTMLElement::FromContentOrNull(element); if (!htmlElement) { return NS_ERROR_NULL_POINTER; } // aBefore is omitted, undefined or null if (dataType == nsIDataType::VTYPE_EMPTY || dataType == nsIDataType::VTYPE_VOID) { ErrorResult error; Add(*htmlElement, (nsGenericHTMLElement*)nullptr, error); return error.StealNSResult(); } nsCOMPtr supports; nsCOMPtr beforeElement; // whether aBefore is nsIDOMHTMLElement... if (NS_SUCCEEDED(aBefore->GetAsISupports(getter_AddRefs(supports)))) { nsCOMPtr beforeElement = do_QueryInterface(supports); nsGenericHTMLElement* beforeHTMLElement = nsGenericHTMLElement::FromContentOrNull(beforeElement); NS_ENSURE_TRUE(beforeHTMLElement, NS_ERROR_DOM_SYNTAX_ERR); ErrorResult error; Add(*htmlElement, beforeHTMLElement, error); return error.StealNSResult(); } // otherwise, whether aBefore is long int32_t index; NS_ENSURE_SUCCESS(aBefore->GetAsInt32(&index), NS_ERROR_DOM_SYNTAX_ERR); ErrorResult error; Add(*htmlElement, index, error); return error.StealNSResult(); } NS_IMETHODIMP HTMLSelectElement::Remove(int32_t aIndex) { nsCOMPtr option = Item(static_cast(aIndex)); if (!option) { return NS_OK; } option->Remove(); return NS_OK; } NS_IMETHODIMP HTMLSelectElement::GetOptions(nsIDOMHTMLOptionsCollection** aValue) { NS_IF_ADDREF(*aValue = GetOptions()); return NS_OK; } NS_IMETHODIMP HTMLSelectElement::GetType(nsAString& aType) { if (HasAttr(kNameSpaceID_None, nsGkAtoms::multiple)) { aType.AssignLiteral("select-multiple"); } else { aType.AssignLiteral("select-one"); } return NS_OK; } NS_IMETHODIMP HTMLSelectElement::GetLength(uint32_t* aLength) { return mOptions->GetLength(aLength); } #define MAX_DYNAMIC_SELECT_LENGTH 10000 NS_IMETHODIMP HTMLSelectElement::SetLength(uint32_t aLength) { ErrorResult rv; SetLength(aLength, rv); return rv.StealNSResult(); } void HTMLSelectElement::SetLength(uint32_t aLength, ErrorResult& aRv) { uint32_t curlen = Length(); if (curlen > aLength) { // Remove extra options for (uint32_t i = curlen; i > aLength; --i) { MOZ_ALWAYS_SUCCEEDS(Remove(i - 1)); } } else if (aLength > curlen) { if (aLength > MAX_DYNAMIC_SELECT_LENGTH) { aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR); return; } RefPtr nodeInfo; nsContentUtils::NameChanged(mNodeInfo, nsGkAtoms::option, getter_AddRefs(nodeInfo)); nsCOMPtr node = NS_NewHTMLOptionElement(nodeInfo.forget()); RefPtr text = new nsTextNode(mNodeInfo->NodeInfoManager()); aRv = node->AppendChildTo(text, false); if (aRv.Failed()) { return; } for (uint32_t i = curlen; i < aLength; i++) { nsINode::AppendChild(*node, aRv); if (aRv.Failed()) { return; } if (i + 1 < aLength) { node = node->CloneNode(true, aRv); if (aRv.Failed()) { return; } MOZ_ASSERT(node); } } } } /* static */ bool HTMLSelectElement::MatchSelectedOptions(nsIContent* aContent, int32_t /* unused */, nsIAtom* /* unused */, void* /* unused*/) { HTMLOptionElement* option = HTMLOptionElement::FromContent(aContent); return option && option->Selected(); } nsIHTMLCollection* HTMLSelectElement::SelectedOptions() { if (!mSelectedOptions) { mSelectedOptions = new nsContentList(this, MatchSelectedOptions, nullptr, nullptr, /* deep */ true); } return mSelectedOptions; } NS_IMETHODIMP HTMLSelectElement::GetSelectedOptions(nsIDOMHTMLCollection** aSelectedOptions) { NS_ADDREF(*aSelectedOptions = SelectedOptions()); return NS_OK; } //NS_IMPL_INT_ATTR(HTMLSelectElement, SelectedIndex, selectedindex) NS_IMETHODIMP HTMLSelectElement::GetSelectedIndex(int32_t* aValue) { *aValue = SelectedIndex(); return NS_OK; } nsresult HTMLSelectElement::SetSelectedIndexInternal(int32_t aIndex, bool aNotify) { int32_t oldSelectedIndex = mSelectedIndex; uint32_t mask = IS_SELECTED | CLEAR_ALL | SET_DISABLED; if (aNotify) { mask |= NOTIFY; } SetOptionsSelectedByIndex(aIndex, aIndex, mask); nsresult rv = NS_OK; nsISelectControlFrame* selectFrame = GetSelectFrame(); if (selectFrame) { rv = selectFrame->OnSetSelectedIndex(oldSelectedIndex, mSelectedIndex); } SetSelectionChanged(true, aNotify); return rv; } NS_IMETHODIMP HTMLSelectElement::SetSelectedIndex(int32_t aIndex) { return SetSelectedIndexInternal(aIndex, true); } NS_IMETHODIMP HTMLSelectElement::GetOptionIndex(nsIDOMHTMLOptionElement* aOption, int32_t aStartIndex, bool aForward, int32_t* aIndex) { nsCOMPtr option = do_QueryInterface(aOption); return mOptions->GetOptionIndex(option->AsElement(), aStartIndex, aForward, aIndex); } bool HTMLSelectElement::IsOptionSelectedByIndex(int32_t aIndex) { HTMLOptionElement* option = Item(static_cast(aIndex)); return option && option->Selected(); } void HTMLSelectElement::OnOptionSelected(nsISelectControlFrame* aSelectFrame, int32_t aIndex, bool aSelected, bool aChangeOptionState, bool aNotify) { // Set the selected index if (aSelected && (aIndex < mSelectedIndex || mSelectedIndex < 0)) { mSelectedIndex = aIndex; SetSelectionChanged(true, aNotify); } else if (!aSelected && aIndex == mSelectedIndex) { FindSelectedIndex(aIndex + 1, aNotify); } if (aChangeOptionState) { // Tell the option to get its bad self selected RefPtr option = Item(static_cast(aIndex)); if (option) { option->SetSelectedInternal(aSelected, aNotify); } } // Let the frame know too if (aSelectFrame) { aSelectFrame->OnOptionSelected(aIndex, aSelected); } UpdateSelectedOptions(); UpdateValueMissingValidityState(); UpdateState(aNotify); } void HTMLSelectElement::FindSelectedIndex(int32_t aStartIndex, bool aNotify) { mSelectedIndex = -1; SetSelectionChanged(true, aNotify); uint32_t len = Length(); for (int32_t i = aStartIndex; i < int32_t(len); i++) { if (IsOptionSelectedByIndex(i)) { mSelectedIndex = i; SetSelectionChanged(true, aNotify); break; } } } // XXX Consider splitting this into two functions for ease of reading: // SelectOptionsByIndex(startIndex, endIndex, clearAll, checkDisabled) // startIndex, endIndex - the range of options to turn on // (-1, -1) will clear all indices no matter what. // clearAll - will clear all other options unless checkDisabled is on // and all the options attempted to be set are disabled // (note that if it is not multiple, and an option is selected, // everything else will be cleared regardless). // checkDisabled - if this is TRUE, and an option is disabled, it will not be // changed regardless of whether it is selected or not. // Generally the UI passes TRUE and JS passes FALSE. // (setDisabled currently is the opposite) // DeselectOptionsByIndex(startIndex, endIndex, checkDisabled) // startIndex, endIndex - the range of options to turn on // (-1, -1) will clear all indices no matter what. // checkDisabled - if this is TRUE, and an option is disabled, it will not be // changed regardless of whether it is selected or not. // Generally the UI passes TRUE and JS passes FALSE. // (setDisabled currently is the opposite) // // XXXbz the above comment is pretty confusing. Maybe we should actually // document the args to this function too, in addition to documenting what // things might end up looking like? In particular, pay attention to the // setDisabled vs checkDisabled business. bool HTMLSelectElement::SetOptionsSelectedByIndex(int32_t aStartIndex, int32_t aEndIndex, uint32_t aOptionsMask) { #if 0 printf("SetOption(%d-%d, %c, ClearAll=%c)\n", aStartIndex, aEndIndex, (aOptionsMask & IS_SELECTED ? 'Y' : 'N'), (aOptionsMask & CLEAR_ALL ? 'Y' : 'N')); #endif // Don't bother if the select is disabled if (!(aOptionsMask & SET_DISABLED) && IsDisabled()) { return false; } // Don't bother if there are no options uint32_t numItems = Length(); if (numItems == 0) { return false; } // First, find out whether multiple items can be selected bool isMultiple = Multiple(); // These variables tell us whether any options were selected // or deselected. bool optionsSelected = false; bool optionsDeselected = false; nsISelectControlFrame* selectFrame = nullptr; bool didGetFrame = false; nsWeakFrame weakSelectFrame; if (aOptionsMask & IS_SELECTED) { // Setting selectedIndex to an out-of-bounds index means -1. (HTML5) if (aStartIndex < 0 || AssertedCast(aStartIndex) >= numItems || aEndIndex < 0 || AssertedCast(aEndIndex) >= numItems) { aStartIndex = -1; aEndIndex = -1; } // Only select the first value if it's not multiple if (!isMultiple) { aEndIndex = aStartIndex; } // This variable tells whether or not all of the options we attempted to // select are disabled. If ClearAll is passed in as true, and we do not // select anything because the options are disabled, we will not clear the // other options. (This is to make the UI work the way one might expect.) bool allDisabled = !(aOptionsMask & SET_DISABLED); // // Save a little time when clearing other options // int32_t previousSelectedIndex = mSelectedIndex; // // Select the requested indices // // If index is -1, everything will be deselected (bug 28143) if (aStartIndex != -1) { MOZ_ASSERT(aStartIndex >= 0); MOZ_ASSERT(aEndIndex >= 0); // Loop through the options and select them (if they are not disabled and // if they are not already selected). for (uint32_t optIndex = AssertedCast(aStartIndex); optIndex <= AssertedCast(aEndIndex); optIndex++) { RefPtr option = Item(optIndex); // Ignore disabled options. if (!(aOptionsMask & SET_DISABLED)) { if (option && IsOptionDisabled(option)) { continue; } allDisabled = false; } // If the index is already selected, ignore it. if (option && !option->Selected()) { // To notify the frame if anything gets changed. No need // to flush here, if there's no frame yet we don't need to // force it to be created just to notify it about a change // in the select. selectFrame = GetSelectFrame(); weakSelectFrame = do_QueryFrame(selectFrame); didGetFrame = true; OnOptionSelected(selectFrame, optIndex, true, true, aOptionsMask & NOTIFY); optionsSelected = true; } } } // Next remove all other options if single select or all is clear // If index is -1, everything will be deselected (bug 28143) if (((!isMultiple && optionsSelected) || ((aOptionsMask & CLEAR_ALL) && !allDisabled) || aStartIndex == -1) && previousSelectedIndex != -1) { for (uint32_t optIndex = AssertedCast(previousSelectedIndex); optIndex < numItems; optIndex++) { if (static_cast(optIndex) < aStartIndex || static_cast(optIndex) > aEndIndex) { HTMLOptionElement* option = Item(optIndex); // If the index is already selected, ignore it. if (option && option->Selected()) { if (!didGetFrame || (selectFrame && !weakSelectFrame.IsAlive())) { // To notify the frame if anything gets changed, don't // flush, if the frame doesn't exist we don't need to // create it just to tell it about this change. selectFrame = GetSelectFrame(); weakSelectFrame = do_QueryFrame(selectFrame); didGetFrame = true; } OnOptionSelected(selectFrame, optIndex, false, true, aOptionsMask & NOTIFY); optionsDeselected = true; // Only need to deselect one option if not multiple if (!isMultiple) { break; } } } } } } else { // If we're deselecting, loop through all selected items and deselect // any that are in the specified range. for (int32_t optIndex = aStartIndex; optIndex <= aEndIndex; optIndex++) { HTMLOptionElement* option = Item(optIndex); if (!(aOptionsMask & SET_DISABLED) && IsOptionDisabled(option)) { continue; } // If the index is already selected, ignore it. if (option && option->Selected()) { if (!didGetFrame || (selectFrame && !weakSelectFrame.IsAlive())) { // To notify the frame if anything gets changed, don't // flush, if the frame doesn't exist we don't need to // create it just to tell it about this change. selectFrame = GetSelectFrame(); weakSelectFrame = do_QueryFrame(selectFrame); didGetFrame = true; } OnOptionSelected(selectFrame, optIndex, false, true, aOptionsMask & NOTIFY); optionsDeselected = true; } } } // Make sure something is selected unless we were set to -1 (none) if (optionsDeselected && aStartIndex != -1) { optionsSelected = CheckSelectSomething(aOptionsMask & NOTIFY) || optionsSelected; } // Let the caller know whether anything was changed return optionsSelected || optionsDeselected; } NS_IMETHODIMP HTMLSelectElement::IsOptionDisabled(int32_t aIndex, bool* aIsDisabled) { *aIsDisabled = false; RefPtr option = Item(aIndex); NS_ENSURE_TRUE(option, NS_ERROR_FAILURE); *aIsDisabled = IsOptionDisabled(option); return NS_OK; } bool HTMLSelectElement::IsOptionDisabled(HTMLOptionElement* aOption) { MOZ_ASSERT(aOption); if (aOption->Disabled()) { return true; } // Check for disabled optgroups // If there are no artifacts, there are no optgroups if (mNonOptionChildren) { for (nsCOMPtr node = static_cast(aOption)->GetParentElement(); node; node = node->GetParentElement()) { // If we reached the select element, we're done if (node->IsHTMLElement(nsGkAtoms::select)) { return false; } RefPtr optGroupElement = HTMLOptGroupElement::FromContent(node); if (!optGroupElement) { // If you put something else between you and the optgroup, you're a // moron and you deserve not to have optgroup disabling work. return false; } if (optGroupElement->Disabled()) { return true; } } } return false; } NS_IMETHODIMP HTMLSelectElement::GetValue(nsAString& aValue) { DOMString value; GetValue(value); value.ToString(aValue); return NS_OK; } void HTMLSelectElement::GetValue(DOMString& aValue) { int32_t selectedIndex = SelectedIndex(); if (selectedIndex < 0) { return; } RefPtr option = Item(static_cast(selectedIndex)); if (!option) { return; } DebugOnly rv = option->GetValue(aValue); MOZ_ASSERT(NS_SUCCEEDED(rv)); } NS_IMETHODIMP HTMLSelectElement::SetValue(const nsAString& aValue) { uint32_t length = Length(); for (uint32_t i = 0; i < length; i++) { RefPtr option = Item(i); if (!option) { continue; } nsAutoString optionVal; option->GetValue(optionVal); if (optionVal.Equals(aValue)) { SetSelectedIndexInternal(int32_t(i), true); return NS_OK; } } // No matching option was found. SetSelectedIndexInternal(-1, true); return NS_OK; } NS_IMPL_BOOL_ATTR(HTMLSelectElement, Autofocus, autofocus) NS_IMPL_BOOL_ATTR(HTMLSelectElement, Disabled, disabled) NS_IMPL_BOOL_ATTR(HTMLSelectElement, Multiple, multiple) NS_IMPL_STRING_ATTR(HTMLSelectElement, Name, name) NS_IMPL_BOOL_ATTR(HTMLSelectElement, Required, required) NS_IMPL_UINT_ATTR(HTMLSelectElement, Size, size) int32_t HTMLSelectElement::TabIndexDefault() { return 0; } bool HTMLSelectElement::IsHTMLFocusable(bool aWithMouse, bool* aIsFocusable, int32_t* aTabIndex) { if (nsGenericHTMLFormElementWithState::IsHTMLFocusable(aWithMouse, aIsFocusable, aTabIndex)) { return true; } *aIsFocusable = !IsDisabled(); return false; } NS_IMETHODIMP HTMLSelectElement::Item(uint32_t aIndex, nsIDOMNode** aReturn) { return mOptions->Item(aIndex, aReturn); } NS_IMETHODIMP HTMLSelectElement::NamedItem(const nsAString& aName, nsIDOMNode** aReturn) { return mOptions->NamedItem(aName, aReturn); } bool HTMLSelectElement::CheckSelectSomething(bool aNotify) { if (mIsDoneAddingChildren) { if (mSelectedIndex < 0 && IsCombobox()) { return SelectSomething(aNotify); } } return false; } bool HTMLSelectElement::SelectSomething(bool aNotify) { // If we're not done building the select, don't play with this yet. if (!mIsDoneAddingChildren) { return false; } uint32_t count; GetLength(&count); for (uint32_t i = 0; i < count; i++) { bool disabled; nsresult rv = IsOptionDisabled(i, &disabled); if (NS_FAILED(rv) || !disabled) { rv = SetSelectedIndexInternal(i, aNotify); NS_ENSURE_SUCCESS(rv, false); UpdateValueMissingValidityState(); UpdateState(aNotify); return true; } } return false; } nsresult HTMLSelectElement::BindToTree(nsIDocument* aDocument, nsIContent* aParent, nsIContent* aBindingParent, bool aCompileEventHandlers) { nsresult rv = nsGenericHTMLFormElementWithState::BindToTree(aDocument, aParent, aBindingParent, aCompileEventHandlers); NS_ENSURE_SUCCESS(rv, rv); // If there is a disabled fieldset in the parent chain, the element is now // barred from constraint validation. // XXXbz is this still needed now that fieldset changes always call // FieldSetDisabledChanged? UpdateBarredFromConstraintValidation(); // And now make sure our state is up to date UpdateState(false); return rv; } void HTMLSelectElement::UnbindFromTree(bool aDeep, bool aNullParent) { nsGenericHTMLFormElementWithState::UnbindFromTree(aDeep, aNullParent); // We might be no longer disabled because our parent chain changed. // XXXbz is this still needed now that fieldset changes always call // FieldSetDisabledChanged? UpdateBarredFromConstraintValidation(); // And now make sure our state is up to date UpdateState(false); } nsresult HTMLSelectElement::BeforeSetAttr(int32_t aNameSpaceID, nsIAtom* aName, nsAttrValueOrString* aValue, bool aNotify) { if (aNotify && aName == nsGkAtoms::disabled && aNameSpaceID == kNameSpaceID_None) { mDisabledChanged = true; } return nsGenericHTMLFormElementWithState::BeforeSetAttr(aNameSpaceID, aName, aValue, aNotify); } nsresult HTMLSelectElement::AfterSetAttr(int32_t aNameSpaceID, nsIAtom* aName, const nsAttrValue* aValue, bool aNotify) { if (aNameSpaceID == kNameSpaceID_None) { if (aName == nsGkAtoms::disabled) { UpdateBarredFromConstraintValidation(); } else if (aName == nsGkAtoms::required) { UpdateValueMissingValidityState(); } else if (aName == nsGkAtoms::autocomplete) { // Clear the cached @autocomplete attribute state mAutocompleteAttrState = nsContentUtils::eAutocompleteAttrState_Unknown; } UpdateState(aNotify); } return nsGenericHTMLFormElementWithState::AfterSetAttr(aNameSpaceID, aName, aValue, aNotify); } nsresult HTMLSelectElement::UnsetAttr(int32_t aNameSpaceID, nsIAtom* aAttribute, bool aNotify) { if (aNotify && aNameSpaceID == kNameSpaceID_None && aAttribute == nsGkAtoms::multiple) { // We're changing from being a multi-select to a single-select. // Make sure we only have one option selected before we do that. // Note that this needs to come before we really unset the attr, // since SetOptionsSelectedByIndex does some bail-out type // optimization for cases when the select is not multiple that // would lead to only a single option getting deselected. if (mSelectedIndex >= 0) { SetSelectedIndexInternal(mSelectedIndex, aNotify); } } nsresult rv = nsGenericHTMLFormElementWithState::UnsetAttr(aNameSpaceID, aAttribute, aNotify); NS_ENSURE_SUCCESS(rv, rv); if (aNotify && aNameSpaceID == kNameSpaceID_None && aAttribute == nsGkAtoms::multiple) { // We might have become a combobox; make sure _something_ gets // selected in that case CheckSelectSomething(aNotify); } return rv; } void HTMLSelectElement::DoneAddingChildren(bool aHaveNotified) { mIsDoneAddingChildren = true; nsISelectControlFrame* selectFrame = GetSelectFrame(); // If we foolishly tried to restore before we were done adding // content, restore the rest of the options proper-like if (mRestoreState) { RestoreStateTo(mRestoreState); mRestoreState = nullptr; } // Notify the frame if (selectFrame) { selectFrame->DoneAddingChildren(true); } if (!mInhibitStateRestoration) { nsresult rv = GenerateStateKey(); if (NS_SUCCEEDED(rv)) { RestoreFormControlState(); } } // Now that we're done, select something (if it's a single select something // must be selected) if (!CheckSelectSomething(false)) { // If an option has @selected set, it will be selected during parsing but // with an empty value. We have to make sure the select element updates it's // validity state to take this into account. UpdateValueMissingValidityState(); // And now make sure we update our content state too UpdateState(aHaveNotified); } mDefaultSelectionSet = true; } bool HTMLSelectElement::ParseAttribute(int32_t aNamespaceID, nsIAtom* aAttribute, const nsAString& aValue, nsAttrValue& aResult) { if (kNameSpaceID_None == aNamespaceID) { if (aAttribute == nsGkAtoms::size) { return aResult.ParsePositiveIntValue(aValue); } else if (aAttribute == nsGkAtoms::autocomplete) { aResult.ParseAtomArray(aValue); return true; } } return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue, aResult); } void HTMLSelectElement::MapAttributesIntoRule(const nsMappedAttributes* aAttributes, nsRuleData* aData) { nsGenericHTMLFormElementWithState::MapImageAlignAttributeInto(aAttributes, aData); nsGenericHTMLFormElementWithState::MapCommonAttributesInto(aAttributes, aData); } nsChangeHint HTMLSelectElement::GetAttributeChangeHint(const nsIAtom* aAttribute, int32_t aModType) const { nsChangeHint retval = nsGenericHTMLFormElementWithState::GetAttributeChangeHint(aAttribute, aModType); if (aAttribute == nsGkAtoms::multiple || aAttribute == nsGkAtoms::size) { retval |= nsChangeHint_ReconstructFrame; } return retval; } NS_IMETHODIMP_(bool) HTMLSelectElement::IsAttributeMapped(const nsIAtom* aAttribute) const { static const MappedAttributeEntry* const map[] = { sCommonAttributeMap, sImageAlignAttributeMap }; return FindAttributeDependence(aAttribute, map); } nsMapRuleToAttributesFunc HTMLSelectElement::GetAttributeMappingFunction() const { return &MapAttributesIntoRule; } bool HTMLSelectElement::IsDisabledForEvents(EventMessage aMessage) { nsIFormControlFrame* formControlFrame = GetFormControlFrame(false); nsIFrame* formFrame = nullptr; if (formControlFrame) { formFrame = do_QueryFrame(formControlFrame); } return IsElementDisabledForEvents(aMessage, formFrame); } nsresult HTMLSelectElement::PreHandleEvent(EventChainPreVisitor& aVisitor) { aVisitor.mCanHandle = false; if (IsDisabledForEvents(aVisitor.mEvent->mMessage)) { return NS_OK; } return nsGenericHTMLFormElementWithState::PreHandleEvent(aVisitor); } nsresult HTMLSelectElement::PostHandleEvent(EventChainPostVisitor& aVisitor) { if (aVisitor.mEvent->mMessage == eFocus) { // If the invalid UI is shown, we should show it while focused and // update the invalid/valid UI. mCanShowInvalidUI = !IsValid() && ShouldShowValidityUI(); // If neither invalid UI nor valid UI is shown, we shouldn't show the valid // UI while focused. mCanShowValidUI = ShouldShowValidityUI(); // We don't have to update NS_EVENT_STATE_MOZ_UI_INVALID nor // NS_EVENT_STATE_MOZ_UI_VALID given that the states should not change. } else if (aVisitor.mEvent->mMessage == eBlur) { mCanShowInvalidUI = true; mCanShowValidUI = true; UpdateState(true); } return nsGenericHTMLFormElementWithState::PostHandleEvent(aVisitor); } EventStates HTMLSelectElement::IntrinsicState() const { EventStates state = nsGenericHTMLFormElementWithState::IntrinsicState(); if (IsCandidateForConstraintValidation()) { if (IsValid()) { state |= NS_EVENT_STATE_VALID; } else { state |= NS_EVENT_STATE_INVALID; if ((!mForm || !mForm->HasAttr(kNameSpaceID_None, nsGkAtoms::novalidate)) && (GetValidityState(VALIDITY_STATE_CUSTOM_ERROR) || (mCanShowInvalidUI && ShouldShowValidityUI()))) { state |= NS_EVENT_STATE_MOZ_UI_INVALID; } } // :-moz-ui-valid applies if all the following are true: // 1. The element is not focused, or had either :-moz-ui-valid or // :-moz-ui-invalid applying before it was focused ; // 2. The element is either valid or isn't allowed to have // :-moz-ui-invalid applying ; // 3. The element has no form owner or its form owner doesn't have the // novalidate attribute set ; // 4. The element has already been modified or the user tried to submit the // form owner while invalid. if ((!mForm || !mForm->HasAttr(kNameSpaceID_None, nsGkAtoms::novalidate)) && (mCanShowValidUI && ShouldShowValidityUI() && (IsValid() || (state.HasState(NS_EVENT_STATE_MOZ_UI_INVALID) && !mCanShowInvalidUI)))) { state |= NS_EVENT_STATE_MOZ_UI_VALID; } } if (HasAttr(kNameSpaceID_None, nsGkAtoms::required)) { state |= NS_EVENT_STATE_REQUIRED; } else { state |= NS_EVENT_STATE_OPTIONAL; } return state; } // nsIFormControl NS_IMETHODIMP HTMLSelectElement::SaveState() { RefPtr state = new SelectState(); uint32_t len = Length(); for (uint32_t optIndex = 0; optIndex < len; optIndex++) { HTMLOptionElement* option = Item(optIndex); if (option && option->Selected()) { nsAutoString value; option->GetValue(value); state->PutOption(optIndex, value); } } nsPresState* presState = GetPrimaryPresState(); if (presState) { presState->SetStateProperty(state); if (mDisabledChanged) { // We do not want to save the real disabled state but the disabled // attribute. presState->SetDisabled(HasAttr(kNameSpaceID_None, nsGkAtoms::disabled)); } } return NS_OK; } bool HTMLSelectElement::RestoreState(nsPresState* aState) { // Get the presentation state object to retrieve our stuff out of. nsCOMPtr state( do_QueryInterface(aState->GetStateProperty())); if (state) { RestoreStateTo(state); // Don't flush, if the frame doesn't exist yet it doesn't care if // we're reset or not. DispatchContentReset(); } if (aState->IsDisabledSet()) { SetDisabled(aState->GetDisabled()); } return false; } void HTMLSelectElement::RestoreStateTo(SelectState* aNewSelected) { if (!mIsDoneAddingChildren) { mRestoreState = aNewSelected; return; } uint32_t len = Length(); uint32_t mask = IS_SELECTED | CLEAR_ALL | SET_DISABLED | NOTIFY; // First clear all SetOptionsSelectedByIndex(-1, -1, mask); // Next set the proper ones for (uint32_t i = 0; i < len; i++) { HTMLOptionElement* option = Item(i); if (option) { nsAutoString value; nsresult rv = option->GetValue(value); if (NS_SUCCEEDED(rv) && aNewSelected->ContainsOption(i, value)) { SetOptionsSelectedByIndex(i, i, IS_SELECTED | SET_DISABLED | NOTIFY); } } } } NS_IMETHODIMP HTMLSelectElement::Reset() { uint32_t numSelected = 0; // // Cycle through the options array and reset the options // uint32_t numOptions = Length(); for (uint32_t i = 0; i < numOptions; i++) { RefPtr option = Item(i); if (option) { // // Reset the option to its default value // uint32_t mask = SET_DISABLED | NOTIFY; if (option->DefaultSelected()) { mask |= IS_SELECTED; numSelected++; } SetOptionsSelectedByIndex(i, i, mask); } } // // If nothing was selected and it's not multiple, select something // if (numSelected == 0 && IsCombobox()) { SelectSomething(true); } SetSelectionChanged(false, true); // // Let the frame know we were reset // // Don't flush, if there's no frame yet it won't care about us being // reset even if we forced it to be created now. // DispatchContentReset(); return NS_OK; } static NS_DEFINE_CID(kFormProcessorCID, NS_FORMPROCESSOR_CID); NS_IMETHODIMP HTMLSelectElement::SubmitNamesValues(HTMLFormSubmission* aFormSubmission) { // Disabled elements don't submit if (IsDisabled()) { return NS_OK; } // // Get the name (if no name, no submit) // nsAutoString name; GetAttr(kNameSpaceID_None, nsGkAtoms::name, name); if (name.IsEmpty()) { return NS_OK; } // // Submit // uint32_t len = Length(); nsAutoString mozType; nsCOMPtr keyGenProcessor; if (GetAttr(kNameSpaceID_None, nsGkAtoms::moztype, mozType) && mozType.EqualsLiteral("-mozilla-keygen")) { keyGenProcessor = do_GetService(kFormProcessorCID); } for (uint32_t optIndex = 0; optIndex < len; optIndex++) { HTMLOptionElement* option = Item(optIndex); // Don't send disabled options if (!option || IsOptionDisabled(option)) { continue; } if (!option->Selected()) { continue; } nsString value; MOZ_ALWAYS_SUCCEEDS(option->GetValue(value)); if (keyGenProcessor) { nsString tmp(value); if (NS_SUCCEEDED(keyGenProcessor->ProcessValue(this, name, tmp))) { value = tmp; } } aFormSubmission->AddNameValuePair(name, value); } return NS_OK; } void HTMLSelectElement::DispatchContentReset() { nsIFormControlFrame* formControlFrame = GetFormControlFrame(false); if (formControlFrame) { // Only dispatch content reset notification if this is a list control // frame or combo box control frame. if (IsCombobox()) { nsIComboboxControlFrame* comboFrame = do_QueryFrame(formControlFrame); if (comboFrame) { comboFrame->OnContentReset(); } } else { nsIListControlFrame* listFrame = do_QueryFrame(formControlFrame); if (listFrame) { listFrame->OnContentReset(); } } } } static void AddOptions(nsIContent* aRoot, HTMLOptionsCollection* aArray) { for (nsIContent* child = aRoot->GetFirstChild(); child; child = child->GetNextSibling()) { HTMLOptionElement* opt = HTMLOptionElement::FromContent(child); if (opt) { aArray->AppendOption(opt); } else if (child->IsHTMLElement(nsGkAtoms::optgroup)) { for (nsIContent* grandchild = child->GetFirstChild(); grandchild; grandchild = grandchild->GetNextSibling()) { opt = HTMLOptionElement::FromContent(grandchild); if (opt) { aArray->AppendOption(opt); } } } } } void HTMLSelectElement::RebuildOptionsArray(bool aNotify) { mOptions->Clear(); AddOptions(this, mOptions); FindSelectedIndex(0, aNotify); } bool HTMLSelectElement::IsValueMissing() { if (!Required()) { return false; } uint32_t length = Length(); for (uint32_t i = 0; i < length; ++i) { RefPtr option = Item(i); if (!option->Selected()) { continue; } if (IsOptionDisabled(option)) { continue; } nsAutoString value; MOZ_ALWAYS_SUCCEEDS(option->GetValue(value)); if (!value.IsEmpty()) { return false; } } return true; } void HTMLSelectElement::UpdateValueMissingValidityState() { SetValidityState(VALIDITY_STATE_VALUE_MISSING, IsValueMissing()); } nsresult HTMLSelectElement::GetValidationMessage(nsAString& aValidationMessage, ValidityStateType aType) { switch (aType) { case VALIDITY_STATE_VALUE_MISSING: { nsXPIDLString message; nsresult rv = nsContentUtils::GetLocalizedString(nsContentUtils::eDOM_PROPERTIES, "FormValidationSelectMissing", message); aValidationMessage = message; return rv; } default: { return nsIConstraintValidation::GetValidationMessage(aValidationMessage, aType); } } } #ifdef DEBUG void HTMLSelectElement::VerifyOptionsArray() { int32_t index = 0; for (nsIContent* child = nsINode::GetFirstChild(); child; child = child->GetNextSibling()) { HTMLOptionElement* opt = HTMLOptionElement::FromContent(child); if (opt) { NS_ASSERTION(opt == mOptions->ItemAsOption(index++), "Options collection broken"); } else if (child->IsHTMLElement(nsGkAtoms::optgroup)) { for (nsIContent* grandchild = child->GetFirstChild(); grandchild; grandchild = grandchild->GetNextSibling()) { opt = HTMLOptionElement::FromContent(grandchild); if (opt) { NS_ASSERTION(opt == mOptions->ItemAsOption(index++), "Options collection broken"); } } } } } #endif void HTMLSelectElement::UpdateBarredFromConstraintValidation() { SetBarredFromConstraintValidation(IsDisabled()); } void HTMLSelectElement::FieldSetDisabledChanged(bool aNotify) { UpdateBarredFromConstraintValidation(); nsGenericHTMLFormElementWithState::FieldSetDisabledChanged(aNotify); } void HTMLSelectElement::SetSelectionChanged(bool aValue, bool aNotify) { if (!mDefaultSelectionSet) { return; } UpdateSelectedOptions(); bool previousSelectionChangedValue = mSelectionHasChanged; mSelectionHasChanged = aValue; if (mSelectionHasChanged != previousSelectionChangedValue) { UpdateState(aNotify); } } void HTMLSelectElement::UpdateSelectedOptions() { if (mSelectedOptions) { mSelectedOptions->SetDirty(); } } JSObject* HTMLSelectElement::WrapNode(JSContext* aCx, JS::Handle aGivenProto) { return HTMLSelectElementBinding::Wrap(aCx, this, aGivenProto); } } // namespace dom } // namespace mozilla