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-rw-r--r--accessible/atk/nsMaiHyperlink.cpp216
1 files changed, 216 insertions, 0 deletions
diff --git a/accessible/atk/nsMaiHyperlink.cpp b/accessible/atk/nsMaiHyperlink.cpp
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+++ b/accessible/atk/nsMaiHyperlink.cpp
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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 "nsIURI.h"
+#include "nsMaiHyperlink.h"
+#include "mozilla/a11y/RemoteAccessible.h"
+
+using namespace mozilla::a11y;
+
+/* MaiAtkHyperlink */
+
+#define MAI_TYPE_ATK_HYPERLINK (mai_atk_hyperlink_get_type())
+#define MAI_ATK_HYPERLINK(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj), MAI_TYPE_ATK_HYPERLINK, MaiAtkHyperlink))
+#define MAI_ATK_HYPERLINK_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass), MAI_TYPE_ATK_HYPERLINK, \
+ MaiAtkHyperlinkClass))
+#define MAI_IS_ATK_HYPERLINK(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj), MAI_TYPE_ATK_HYPERLINK))
+#define MAI_IS_ATK_HYPERLINK_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass), MAI_TYPE_ATK_HYPERLINK))
+#define MAI_ATK_HYPERLINK_GET_CLASS(obj) \
+ (G_TYPE_INSTANCE_GET_CLASS((obj), MAI_TYPE_ATK_HYPERLINK, \
+ MaiAtkHyperlinkClass))
+
+/**
+ * This MaiAtkHyperlink is a thin wrapper, in the MAI namespace,
+ * for AtkHyperlink
+ */
+
+struct MaiAtkHyperlink {
+ AtkHyperlink parent;
+
+ /*
+ * The MaiHyperlink whose properties and features are exported via this
+ * hyperlink instance.
+ */
+ MaiHyperlink* maiHyperlink;
+};
+
+struct MaiAtkHyperlinkClass {
+ AtkHyperlinkClass parent_class;
+};
+
+GType mai_atk_hyperlink_get_type(void);
+
+G_BEGIN_DECLS
+/* callbacks for AtkHyperlink */
+static void classInitCB(AtkHyperlinkClass* aClass);
+static void finalizeCB(GObject* aObj);
+
+/* callbacks for AtkHyperlink virtual functions */
+static gchar* getUriCB(AtkHyperlink* aLink, gint aLinkIndex);
+static AtkObject* getObjectCB(AtkHyperlink* aLink, gint aLinkIndex);
+static gint getEndIndexCB(AtkHyperlink* aLink);
+static gint getStartIndexCB(AtkHyperlink* aLink);
+static gboolean isValidCB(AtkHyperlink* aLink);
+static gint getAnchorCountCB(AtkHyperlink* aLink);
+G_END_DECLS
+
+static gpointer parent_class = nullptr;
+
+static MaiHyperlink* GetMaiHyperlink(AtkHyperlink* aHyperlink) {
+ NS_ENSURE_TRUE(MAI_IS_ATK_HYPERLINK(aHyperlink), nullptr);
+ MaiHyperlink* maiHyperlink = MAI_ATK_HYPERLINK(aHyperlink)->maiHyperlink;
+ NS_ENSURE_TRUE(maiHyperlink != nullptr, nullptr);
+ NS_ENSURE_TRUE(maiHyperlink->GetAtkHyperlink() == aHyperlink, nullptr);
+ return maiHyperlink;
+}
+
+GType mai_atk_hyperlink_get_type(void) {
+ static GType type = 0;
+
+ if (!type) {
+ static const GTypeInfo tinfo = {
+ sizeof(MaiAtkHyperlinkClass),
+ (GBaseInitFunc) nullptr,
+ (GBaseFinalizeFunc) nullptr,
+ (GClassInitFunc)classInitCB,
+ (GClassFinalizeFunc) nullptr,
+ nullptr, /* class data */
+ sizeof(MaiAtkHyperlink), /* instance size */
+ 0, /* nb preallocs */
+ (GInstanceInitFunc) nullptr,
+ nullptr /* value table */
+ };
+
+ type = g_type_register_static(ATK_TYPE_HYPERLINK, "MaiAtkHyperlink", &tinfo,
+ GTypeFlags(0));
+ }
+ return type;
+}
+
+MaiHyperlink::MaiHyperlink(Accessible* aHyperLink)
+ : mHyperlink(aHyperLink), mMaiAtkHyperlink(nullptr) {
+ mMaiAtkHyperlink = reinterpret_cast<AtkHyperlink*>(
+ g_object_new(mai_atk_hyperlink_get_type(), nullptr));
+ NS_ASSERTION(mMaiAtkHyperlink, "OUT OF MEMORY");
+ if (!mMaiAtkHyperlink) return;
+
+ MAI_ATK_HYPERLINK(mMaiAtkHyperlink)->maiHyperlink = this;
+}
+
+MaiHyperlink::~MaiHyperlink() {
+ if (mMaiAtkHyperlink) {
+ MAI_ATK_HYPERLINK(mMaiAtkHyperlink)->maiHyperlink = nullptr;
+ g_object_unref(mMaiAtkHyperlink);
+ }
+}
+
+/* static functions for ATK callbacks */
+
+void classInitCB(AtkHyperlinkClass* aClass) {
+ GObjectClass* gobject_class = G_OBJECT_CLASS(aClass);
+
+ parent_class = g_type_class_peek_parent(aClass);
+
+ aClass->get_uri = getUriCB;
+ aClass->get_object = getObjectCB;
+ aClass->get_end_index = getEndIndexCB;
+ aClass->get_start_index = getStartIndexCB;
+ aClass->is_valid = isValidCB;
+ aClass->get_n_anchors = getAnchorCountCB;
+
+ gobject_class->finalize = finalizeCB;
+}
+
+void finalizeCB(GObject* aObj) {
+ NS_ASSERTION(MAI_IS_ATK_HYPERLINK(aObj), "Invalid MaiAtkHyperlink");
+ if (!MAI_IS_ATK_HYPERLINK(aObj)) return;
+
+ MaiAtkHyperlink* maiAtkHyperlink = MAI_ATK_HYPERLINK(aObj);
+ maiAtkHyperlink->maiHyperlink = nullptr;
+
+ /* call parent finalize function */
+ if (G_OBJECT_CLASS(parent_class)->finalize) {
+ G_OBJECT_CLASS(parent_class)->finalize(aObj);
+ }
+}
+
+gchar* getUriCB(AtkHyperlink* aLink, gint aLinkIndex) {
+ MaiHyperlink* maiLink = GetMaiHyperlink(aLink);
+ if (!maiLink) {
+ return nullptr;
+ }
+
+ Accessible* acc = maiLink->Acc();
+ if (!acc) {
+ return nullptr;
+ }
+
+ nsAutoCString cautoStr;
+ nsCOMPtr<nsIURI> uri = acc->AnchorURIAt(aLinkIndex);
+ if (!uri) return nullptr;
+
+ nsresult rv = uri->GetSpec(cautoStr);
+ NS_ENSURE_SUCCESS(rv, nullptr);
+
+ return g_strdup(cautoStr.get());
+}
+
+AtkObject* getObjectCB(AtkHyperlink* aLink, gint aLinkIndex) {
+ MaiHyperlink* maiLink = GetMaiHyperlink(aLink);
+ if (!maiLink) {
+ return nullptr;
+ }
+
+ Accessible* acc = maiLink->Acc();
+ if (!acc) {
+ return nullptr;
+ }
+
+ Accessible* anchor = acc->AnchorAt(aLinkIndex);
+ return anchor ? GetWrapperFor(anchor) : nullptr;
+}
+
+gint getEndIndexCB(AtkHyperlink* aLink) {
+ MaiHyperlink* maiLink = GetMaiHyperlink(aLink);
+ if (!maiLink) return false;
+
+ return static_cast<gint>(maiLink->Acc()->EndOffset());
+}
+
+gint getStartIndexCB(AtkHyperlink* aLink) {
+ MaiHyperlink* maiLink = GetMaiHyperlink(aLink);
+ if (!maiLink) return -1;
+
+ return static_cast<gint>(maiLink->Acc()->StartOffset());
+}
+
+gboolean isValidCB(AtkHyperlink* aLink) {
+ MaiHyperlink* maiLink = GetMaiHyperlink(aLink);
+ if (!maiLink) return false;
+
+ Accessible* acc = maiLink->Acc();
+ if (!acc) {
+ return false;
+ }
+
+ return static_cast<gboolean>(acc->IsLinkValid());
+}
+
+gint getAnchorCountCB(AtkHyperlink* aLink) {
+ MaiHyperlink* maiLink = GetMaiHyperlink(aLink);
+ if (!maiLink) return -1;
+
+ Accessible* acc = maiLink->Acc();
+ if (!acc) {
+ return -1;
+ }
+
+ return static_cast<gint>(acc->AnchorCount());
+}