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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /accessible/base/AccGroupInfo.h
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
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diff --git a/accessible/base/AccGroupInfo.h b/accessible/base/AccGroupInfo.h
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+/* 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/. */
+
+#ifndef AccGroupInfo_h_
+#define AccGroupInfo_h_
+
+#include "Accessible-inl.h"
+
+namespace mozilla {
+namespace a11y {
+
+/**
+ * Calculate and store group information.
+ */
+class AccGroupInfo
+{
+public:
+ ~AccGroupInfo() { MOZ_COUNT_DTOR(AccGroupInfo); }
+
+ /**
+ * Return 1-based position in the group.
+ */
+ uint32_t PosInSet() const { return mPosInSet; }
+
+ /**
+ * Return a number of items in the group.
+ */
+ uint32_t SetSize() const { return mSetSize; }
+
+ /**
+ * Return a direct or logical parent of the accessible that this group info is
+ * created for.
+ */
+ Accessible* ConceptualParent() const { return mParent; }
+
+ /**
+ * Update group information.
+ */
+ void Update();
+
+ /**
+ * Create group info.
+ */
+ static AccGroupInfo* CreateGroupInfo(Accessible* aAccessible)
+ {
+ mozilla::a11y::role role = aAccessible->Role();
+ if (role != mozilla::a11y::roles::ROW &&
+ role != mozilla::a11y::roles::OUTLINEITEM &&
+ role != mozilla::a11y::roles::OPTION &&
+ role != mozilla::a11y::roles::LISTITEM &&
+ role != mozilla::a11y::roles::MENUITEM &&
+ role != mozilla::a11y::roles::COMBOBOX_OPTION &&
+ role != mozilla::a11y::roles::RICH_OPTION &&
+ role != mozilla::a11y::roles::CHECK_RICH_OPTION &&
+ role != mozilla::a11y::roles::PARENT_MENUITEM &&
+ role != mozilla::a11y::roles::CHECK_MENU_ITEM &&
+ role != mozilla::a11y::roles::RADIO_MENU_ITEM &&
+ role != mozilla::a11y::roles::RADIOBUTTON &&
+ role != mozilla::a11y::roles::PAGETAB)
+ return nullptr;
+
+ AccGroupInfo* info = new AccGroupInfo(aAccessible, BaseRole(role));
+ return info;
+ }
+
+ /**
+ * Return a first item for the given container.
+ */
+ static Accessible* FirstItemOf(Accessible* aContainer);
+
+ /**
+ * Return next item of the same group to the given item.
+ */
+ static Accessible* NextItemTo(Accessible* aItem);
+
+protected:
+ AccGroupInfo(Accessible* aItem, a11y::role aRole);
+
+private:
+ AccGroupInfo() = delete;
+ AccGroupInfo(const AccGroupInfo&) = delete;
+ AccGroupInfo& operator =(const AccGroupInfo&) = delete;
+
+ static mozilla::a11y::role BaseRole(mozilla::a11y::role aRole)
+ {
+ if (aRole == mozilla::a11y::roles::CHECK_MENU_ITEM ||
+ aRole == mozilla::a11y::roles::PARENT_MENUITEM ||
+ aRole == mozilla::a11y::roles::RADIO_MENU_ITEM)
+ return mozilla::a11y::roles::MENUITEM;
+
+ if (aRole == mozilla::a11y::roles::CHECK_RICH_OPTION)
+ return mozilla::a11y::roles::RICH_OPTION;
+
+ return aRole;
+ }
+
+ /**
+ * Return true if the given parent and child roles should have their node
+ * relations reported.
+ */
+ static bool ShouldReportRelations(a11y::role aRole, a11y::role aParentRole);
+
+ uint32_t mPosInSet;
+ uint32_t mSetSize;
+ Accessible* mParent;
+ Accessible* mItem;
+ a11y::role mRole;
+};
+
+} // namespace mozilla
+} // namespace a11y
+
+#endif