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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=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 "XULSelectControlAccessible.h"
#include "nsAccessibilityService.h"
#include "DocAccessible.h"
#include "nsIDOMXULSelectCntrlItemEl.h"
#include "nsIDOMXULMultSelectCntrlEl.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/KeyboardEventBinding.h"
using namespace mozilla;
using namespace mozilla::a11y;
////////////////////////////////////////////////////////////////////////////////
// XULSelectControlAccessible
////////////////////////////////////////////////////////////////////////////////
XULSelectControlAccessible::XULSelectControlAccessible(nsIContent* aContent,
DocAccessible* aDoc)
: AccessibleWrap(aContent, aDoc) {
mGenericTypes |= eSelect;
mSelectControl = aContent->AsElement();
}
////////////////////////////////////////////////////////////////////////////////
// XULSelectControlAccessible: LocalAccessible
void XULSelectControlAccessible::Shutdown() {
mSelectControl = nullptr;
AccessibleWrap::Shutdown();
}
////////////////////////////////////////////////////////////////////////////////
// XULSelectControlAccessible: SelectAccessible
void XULSelectControlAccessible::SelectedItems(
nsTArray<LocalAccessible*>* aItems) {
// For XUL multi-select control
nsCOMPtr<nsIDOMXULMultiSelectControlElement> xulMultiSelect =
mSelectControl->AsXULMultiSelectControl();
if (xulMultiSelect) {
int32_t length = 0;
xulMultiSelect->GetSelectedCount(&length);
for (int32_t index = 0; index < length; index++) {
RefPtr<dom::Element> element;
xulMultiSelect->MultiGetSelectedItem(index, getter_AddRefs(element));
LocalAccessible* item = mDoc->GetAccessible(element);
if (item) aItems->AppendElement(item);
}
} else { // Single select?
nsCOMPtr<nsIDOMXULSelectControlElement> selectControl =
mSelectControl->AsXULSelectControl();
RefPtr<dom::Element> element;
selectControl->GetSelectedItem(getter_AddRefs(element));
if (element) {
LocalAccessible* item = mDoc->GetAccessible(element);
if (item) aItems->AppendElement(item);
}
}
}
LocalAccessible* XULSelectControlAccessible::GetSelectedItem(uint32_t aIndex) {
nsCOMPtr<nsIDOMXULMultiSelectControlElement> multiSelectControl =
mSelectControl->AsXULMultiSelectControl();
RefPtr<dom::Element> element;
if (multiSelectControl) {
multiSelectControl->MultiGetSelectedItem(aIndex, getter_AddRefs(element));
} else if (aIndex == 0) {
nsCOMPtr<nsIDOMXULSelectControlElement> selectControl =
mSelectControl->AsXULSelectControl();
if (selectControl) {
selectControl->GetSelectedItem(getter_AddRefs(element));
}
}
return element && mDoc ? mDoc->GetAccessible(element) : nullptr;
}
uint32_t XULSelectControlAccessible::SelectedItemCount() {
// For XUL multi-select control
nsCOMPtr<nsIDOMXULMultiSelectControlElement> multiSelectControl =
mSelectControl->AsXULMultiSelectControl();
if (multiSelectControl) {
int32_t count = 0;
multiSelectControl->GetSelectedCount(&count);
return count;
}
// For XUL single-select control/menulist
nsCOMPtr<nsIDOMXULSelectControlElement> selectControl =
mSelectControl->AsXULSelectControl();
if (selectControl) {
int32_t index = -1;
selectControl->GetSelectedIndex(&index);
return (index >= 0) ? 1 : 0;
}
return 0;
}
bool XULSelectControlAccessible::AddItemToSelection(uint32_t aIndex) {
LocalAccessible* item = LocalChildAt(aIndex);
if (!item || !item->GetContent()) return false;
nsCOMPtr<nsIDOMXULSelectControlItemElement> itemElm =
item->GetContent()->AsElement()->AsXULSelectControlItem();
if (!itemElm) return false;
bool isItemSelected = false;
itemElm->GetSelected(&isItemSelected);
if (isItemSelected) return true;
nsCOMPtr<nsIDOMXULMultiSelectControlElement> multiSelectControl =
mSelectControl->AsXULMultiSelectControl();
if (multiSelectControl) {
multiSelectControl->AddItemToSelection(itemElm);
} else {
nsCOMPtr<nsIDOMXULSelectControlElement> selectControl =
mSelectControl->AsXULSelectControl();
if (selectControl) {
selectControl->SetSelectedItem(item->Elm());
}
}
return true;
}
bool XULSelectControlAccessible::RemoveItemFromSelection(uint32_t aIndex) {
LocalAccessible* item = LocalChildAt(aIndex);
if (!item || !item->GetContent()) return false;
nsCOMPtr<nsIDOMXULSelectControlItemElement> itemElm =
item->GetContent()->AsElement()->AsXULSelectControlItem();
if (!itemElm) return false;
bool isItemSelected = false;
itemElm->GetSelected(&isItemSelected);
if (!isItemSelected) return true;
nsCOMPtr<nsIDOMXULMultiSelectControlElement> multiSelectControl =
mSelectControl->AsXULMultiSelectControl();
if (multiSelectControl) {
multiSelectControl->RemoveItemFromSelection(itemElm);
} else {
nsCOMPtr<nsIDOMXULSelectControlElement> selectControl =
mSelectControl->AsXULSelectControl();
if (selectControl) {
selectControl->SetSelectedItem(nullptr);
}
}
return true;
}
bool XULSelectControlAccessible::IsItemSelected(uint32_t aIndex) {
LocalAccessible* item = LocalChildAt(aIndex);
if (!item || !item->GetContent()) return false;
nsCOMPtr<nsIDOMXULSelectControlItemElement> itemElm =
item->GetContent()->AsElement()->AsXULSelectControlItem();
if (!itemElm) return false;
bool isItemSelected = false;
itemElm->GetSelected(&isItemSelected);
return isItemSelected;
}
bool XULSelectControlAccessible::UnselectAll() {
nsCOMPtr<nsIDOMXULMultiSelectControlElement> multiSelectControl =
mSelectControl->AsXULMultiSelectControl();
if (multiSelectControl) {
multiSelectControl->ClearSelection();
} else {
nsCOMPtr<nsIDOMXULSelectControlElement> selectControl =
mSelectControl->AsXULSelectControl();
if (selectControl) {
selectControl->SetSelectedIndex(-1);
}
}
return true;
}
bool XULSelectControlAccessible::SelectAll() {
nsCOMPtr<nsIDOMXULMultiSelectControlElement> multiSelectControl =
mSelectControl->AsXULMultiSelectControl();
if (multiSelectControl) {
multiSelectControl->SelectAll();
return true;
}
// otherwise, don't support this method
return false;
}
////////////////////////////////////////////////////////////////////////////////
// XULSelectControlAccessible: Widgets
LocalAccessible* XULSelectControlAccessible::CurrentItem() const {
// aria-activedescendant should override.
LocalAccessible* current = AccessibleWrap::CurrentItem();
if (current) {
return current;
}
if (!mSelectControl) return nullptr;
RefPtr<dom::Element> currentItemElm;
nsCOMPtr<nsIDOMXULMultiSelectControlElement> multiSelectControl =
mSelectControl->AsXULMultiSelectControl();
if (multiSelectControl) {
multiSelectControl->GetCurrentItem(getter_AddRefs(currentItemElm));
} else {
nsCOMPtr<nsIDOMXULSelectControlElement> selectControl =
mSelectControl->AsXULSelectControl();
if (selectControl) {
selectControl->GetSelectedItem(getter_AddRefs(currentItemElm));
}
}
if (currentItemElm) {
DocAccessible* document = Document();
if (document) return document->GetAccessible(currentItemElm);
}
return nullptr;
}
void XULSelectControlAccessible::SetCurrentItem(const LocalAccessible* aItem) {
if (!mSelectControl) return;
nsCOMPtr<dom::Element> itemElm = aItem->Elm();
nsCOMPtr<nsIDOMXULMultiSelectControlElement> multiSelectControl =
itemElm->AsXULMultiSelectControl();
if (multiSelectControl) {
multiSelectControl->SetCurrentItem(itemElm);
} else {
nsCOMPtr<nsIDOMXULSelectControlElement> selectControl =
mSelectControl->AsXULSelectControl();
if (selectControl) {
selectControl->SetSelectedItem(itemElm);
}
}
}