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Diffstat (limited to 'accessible/xul/XULSelectControlAccessible.cpp')
| -rw-r--r-- | accessible/xul/XULSelectControlAccessible.cpp | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/accessible/xul/XULSelectControlAccessible.cpp b/accessible/xul/XULSelectControlAccessible.cpp new file mode 100644 index 0000000000..95854c7d48 --- /dev/null +++ b/accessible/xul/XULSelectControlAccessible.cpp @@ -0,0 +1,253 @@ +/* -*- 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: Accessible + +void XULSelectControlAccessible::Shutdown() { + mSelectControl = nullptr; + AccessibleWrap::Shutdown(); +} + +//////////////////////////////////////////////////////////////////////////////// +// XULSelectControlAccessible: SelectAccessible + +void XULSelectControlAccessible::SelectedItems(nsTArray<Accessible*>* 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)); + Accessible* 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) { + Accessible* item = mDoc->GetAccessible(element); + if (item) aItems->AppendElement(item); + } + } +} + +Accessible* 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) { + Accessible* item = GetChildAt(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) { + Accessible* item = GetChildAt(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) { + Accessible* item = GetChildAt(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 + +Accessible* XULSelectControlAccessible::CurrentItem() const { + // aria-activedescendant should override. + Accessible* 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 Accessible* 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); + } + } +} |