michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim: set ts=2 et sw=2 tw=80: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "nsIURI.h"
michael@0: #include "nsMaiHyperlink.h"
michael@0: 
michael@0: using namespace mozilla::a11y;
michael@0: 
michael@0: /* MaiAtkHyperlink */
michael@0: 
michael@0: #define MAI_TYPE_ATK_HYPERLINK      (mai_atk_hyperlink_get_type ())
michael@0: #define MAI_ATK_HYPERLINK(obj)      (G_TYPE_CHECK_INSTANCE_CAST ((obj),\
michael@0:                                      MAI_TYPE_ATK_HYPERLINK, MaiAtkHyperlink))
michael@0: #define MAI_ATK_HYPERLINK_CLASS(klass)  (G_TYPE_CHECK_CLASS_CAST ((klass),\
michael@0:                                  MAI_TYPE_ATK_HYPERLINK, MaiAtkHyperlinkClass))
michael@0: #define MAI_IS_ATK_HYPERLINK(obj)      (G_TYPE_CHECK_INSTANCE_TYPE ((obj),\
michael@0:                                         MAI_TYPE_ATK_HYPERLINK))
michael@0: #define MAI_IS_ATK_HYPERLINK_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),\
michael@0:                                         MAI_TYPE_ATK_HYPERLINK))
michael@0: #define MAI_ATK_HYPERLINK_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj),\
michael@0:                                  MAI_TYPE_ATK_HYPERLINK, MaiAtkHyperlinkClass))
michael@0: 
michael@0: /**
michael@0:  * This MaiAtkHyperlink is a thin wrapper, in the MAI namespace,
michael@0:  * for AtkHyperlink
michael@0:  */
michael@0: 
michael@0: struct MaiAtkHyperlink
michael@0: {
michael@0:     AtkHyperlink parent;
michael@0: 
michael@0:     /*
michael@0:      * The MaiHyperlink whose properties and features are exported via this
michael@0:      * hyperlink instance.
michael@0:      */
michael@0:     MaiHyperlink *maiHyperlink;
michael@0: };
michael@0: 
michael@0: struct MaiAtkHyperlinkClass
michael@0: {
michael@0:     AtkHyperlinkClass parent_class;
michael@0: };
michael@0: 
michael@0: GType mai_atk_hyperlink_get_type(void);
michael@0: 
michael@0: G_BEGIN_DECLS
michael@0: /* callbacks for AtkHyperlink */
michael@0: static void classInitCB(AtkHyperlinkClass *aClass);
michael@0: static void finalizeCB(GObject *aObj);
michael@0: 
michael@0: /* callbacks for AtkHyperlink virtual functions */
michael@0: static gchar *getUriCB(AtkHyperlink *aLink, gint aLinkIndex);
michael@0: static AtkObject *getObjectCB(AtkHyperlink *aLink, gint aLinkIndex);
michael@0: static gint getEndIndexCB(AtkHyperlink *aLink);
michael@0: static gint getStartIndexCB(AtkHyperlink *aLink);
michael@0: static gboolean isValidCB(AtkHyperlink *aLink);
michael@0: static gint getAnchorCountCB(AtkHyperlink *aLink);
michael@0: G_END_DECLS
michael@0: 
michael@0: static gpointer parent_class = nullptr;
michael@0: static Accessible*
michael@0: get_accessible_hyperlink(AtkHyperlink *aHyperlink);
michael@0: 
michael@0: GType
michael@0: mai_atk_hyperlink_get_type(void)
michael@0: {
michael@0:     static GType type = 0;
michael@0: 
michael@0:     if (!type) {
michael@0:         static const GTypeInfo tinfo = {
michael@0:             sizeof(MaiAtkHyperlinkClass),
michael@0:             (GBaseInitFunc)nullptr,
michael@0:             (GBaseFinalizeFunc)nullptr,
michael@0:             (GClassInitFunc)classInitCB,
michael@0:             (GClassFinalizeFunc)nullptr,
michael@0:             nullptr, /* class data */
michael@0:             sizeof(MaiAtkHyperlink), /* instance size */
michael@0:             0, /* nb preallocs */
michael@0:             (GInstanceInitFunc)nullptr,
michael@0:             nullptr /* value table */
michael@0:         };
michael@0: 
michael@0:         type = g_type_register_static(ATK_TYPE_HYPERLINK,
michael@0:                                       "MaiAtkHyperlink",
michael@0:                                       &tinfo, GTypeFlags(0));
michael@0:     }
michael@0:     return type;
michael@0: }
michael@0: 
michael@0: MaiHyperlink::MaiHyperlink(Accessible* aHyperLink) :
michael@0:     mHyperlink(aHyperLink),
michael@0:     mMaiAtkHyperlink(nullptr)
michael@0: {
michael@0: }
michael@0: 
michael@0: MaiHyperlink::~MaiHyperlink()
michael@0: {
michael@0:     if (mMaiAtkHyperlink) {
michael@0:         MAI_ATK_HYPERLINK(mMaiAtkHyperlink)->maiHyperlink = nullptr;
michael@0:         g_object_unref(mMaiAtkHyperlink);
michael@0:     }
michael@0: }
michael@0: 
michael@0: AtkHyperlink*
michael@0: MaiHyperlink::GetAtkHyperlink(void)
michael@0: {
michael@0:   NS_ENSURE_TRUE(mHyperlink, nullptr);
michael@0: 
michael@0:   if (mMaiAtkHyperlink)
michael@0:     return mMaiAtkHyperlink;
michael@0: 
michael@0:   if (!mHyperlink->IsLink())
michael@0:     return nullptr;
michael@0: 
michael@0:     mMaiAtkHyperlink =
michael@0:         reinterpret_cast<AtkHyperlink *>
michael@0:                         (g_object_new(mai_atk_hyperlink_get_type(), nullptr));
michael@0:     NS_ASSERTION(mMaiAtkHyperlink, "OUT OF MEMORY");
michael@0:     NS_ENSURE_TRUE(mMaiAtkHyperlink, nullptr);
michael@0: 
michael@0:     /* be sure to initialize it with "this" */
michael@0:     MaiHyperlink::Initialize(mMaiAtkHyperlink, this);
michael@0: 
michael@0:     return mMaiAtkHyperlink;
michael@0: }
michael@0: 
michael@0: /* static */
michael@0: 
michael@0: /* remember to call this static function when a MaiAtkHyperlink
michael@0:  * is created
michael@0:  */
michael@0: 
michael@0: nsresult
michael@0: MaiHyperlink::Initialize(AtkHyperlink *aObj, MaiHyperlink *aHyperlink)
michael@0: {
michael@0:     NS_ENSURE_ARG(MAI_IS_ATK_HYPERLINK(aObj));
michael@0:     NS_ENSURE_ARG(aHyperlink);
michael@0: 
michael@0:     /* initialize hyperlink */
michael@0:     MAI_ATK_HYPERLINK(aObj)->maiHyperlink = aHyperlink;
michael@0:     return NS_OK;
michael@0: }
michael@0: 
michael@0: /* static functions for ATK callbacks */
michael@0: 
michael@0: void
michael@0: classInitCB(AtkHyperlinkClass *aClass)
michael@0: {
michael@0:     GObjectClass *gobject_class = G_OBJECT_CLASS(aClass);
michael@0: 
michael@0:     parent_class = g_type_class_peek_parent(aClass);
michael@0: 
michael@0:     aClass->get_uri = getUriCB;
michael@0:     aClass->get_object = getObjectCB;
michael@0:     aClass->get_end_index = getEndIndexCB;
michael@0:     aClass->get_start_index = getStartIndexCB;
michael@0:     aClass->is_valid = isValidCB;
michael@0:     aClass->get_n_anchors = getAnchorCountCB;
michael@0: 
michael@0:     gobject_class->finalize = finalizeCB;
michael@0: }
michael@0: 
michael@0: void
michael@0: finalizeCB(GObject *aObj)
michael@0: {
michael@0:     NS_ASSERTION(MAI_IS_ATK_HYPERLINK(aObj), "Invalid MaiAtkHyperlink");
michael@0:     if (!MAI_IS_ATK_HYPERLINK(aObj))
michael@0:         return;
michael@0: 
michael@0:     MaiAtkHyperlink *maiAtkHyperlink = MAI_ATK_HYPERLINK(aObj);
michael@0:     maiAtkHyperlink->maiHyperlink = nullptr;
michael@0: 
michael@0:     /* call parent finalize function */
michael@0:     if (G_OBJECT_CLASS (parent_class)->finalize)
michael@0:         G_OBJECT_CLASS (parent_class)->finalize(aObj);
michael@0: }
michael@0: 
michael@0: gchar *
michael@0: getUriCB(AtkHyperlink *aLink, gint aLinkIndex)
michael@0: {
michael@0:     Accessible* hyperlink = get_accessible_hyperlink(aLink);
michael@0:     NS_ENSURE_TRUE(hyperlink, nullptr);
michael@0: 
michael@0:     nsCOMPtr<nsIURI> uri = hyperlink->AnchorURIAt(aLinkIndex);
michael@0:     if (!uri)
michael@0:         return nullptr;
michael@0: 
michael@0:     nsAutoCString cautoStr;
michael@0:     nsresult rv = uri->GetSpec(cautoStr);
michael@0:     NS_ENSURE_SUCCESS(rv, nullptr);
michael@0: 
michael@0:     return g_strdup(cautoStr.get());
michael@0: }
michael@0: 
michael@0: AtkObject *
michael@0: getObjectCB(AtkHyperlink *aLink, gint aLinkIndex)
michael@0: {
michael@0:     Accessible* hyperlink = get_accessible_hyperlink(aLink);
michael@0:     NS_ENSURE_TRUE(hyperlink, nullptr);
michael@0: 
michael@0:     Accessible* anchor = hyperlink->AnchorAt(aLinkIndex);
michael@0:     NS_ENSURE_TRUE(anchor, nullptr);
michael@0: 
michael@0:     AtkObject* atkObj = AccessibleWrap::GetAtkObject(anchor);
michael@0:     //no need to add ref it, because it is "get" not "ref"
michael@0:     return atkObj;
michael@0: }
michael@0: 
michael@0: gint
michael@0: getEndIndexCB(AtkHyperlink *aLink)
michael@0: {
michael@0:     Accessible* hyperlink = get_accessible_hyperlink(aLink);
michael@0:     NS_ENSURE_TRUE(hyperlink, -1);
michael@0: 
michael@0:     return static_cast<gint>(hyperlink->EndOffset());
michael@0: }
michael@0: 
michael@0: gint
michael@0: getStartIndexCB(AtkHyperlink *aLink)
michael@0: {
michael@0:     Accessible* hyperlink = get_accessible_hyperlink(aLink);
michael@0:     NS_ENSURE_TRUE(hyperlink, -1);
michael@0: 
michael@0:     return static_cast<gint>(hyperlink->StartOffset());
michael@0: }
michael@0: 
michael@0: gboolean
michael@0: isValidCB(AtkHyperlink *aLink)
michael@0: {
michael@0:     Accessible* hyperlink = get_accessible_hyperlink(aLink);
michael@0:     NS_ENSURE_TRUE(hyperlink, FALSE);
michael@0: 
michael@0:     return static_cast<gboolean>(hyperlink->IsLinkValid());
michael@0: }
michael@0: 
michael@0: gint
michael@0: getAnchorCountCB(AtkHyperlink *aLink)
michael@0: {
michael@0:     Accessible* hyperlink = get_accessible_hyperlink(aLink);
michael@0:     NS_ENSURE_TRUE(hyperlink, -1);
michael@0: 
michael@0:     return static_cast<gint>(hyperlink->AnchorCount());
michael@0: }
michael@0: 
michael@0: // Check if aHyperlink is a valid MaiHyperlink, and return the
michael@0: // HyperLinkAccessible related.
michael@0: Accessible*
michael@0: get_accessible_hyperlink(AtkHyperlink *aHyperlink)
michael@0: {
michael@0:     NS_ENSURE_TRUE(MAI_IS_ATK_HYPERLINK(aHyperlink), nullptr);
michael@0:     MaiHyperlink * maiHyperlink =
michael@0:         MAI_ATK_HYPERLINK(aHyperlink)->maiHyperlink;
michael@0:     NS_ENSURE_TRUE(maiHyperlink != nullptr, nullptr);
michael@0:     NS_ENSURE_TRUE(maiHyperlink->GetAtkHyperlink() == aHyperlink, nullptr);
michael@0:     return maiHyperlink->GetAccHyperlink();
michael@0: }