diff options
Diffstat (limited to 'lib/events/eventcontent.h')
| -rw-r--r-- | lib/events/eventcontent.h | 482 |
1 files changed, 235 insertions, 247 deletions
diff --git a/lib/events/eventcontent.h b/lib/events/eventcontent.h index 254eb9a9..5c0f92d1 100644 --- a/lib/events/eventcontent.h +++ b/lib/events/eventcontent.h @@ -13,7 +13,7 @@ * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #pragma once @@ -23,268 +23,256 @@ #include <QtCore/QJsonObject> #include <QtCore/QMimeType> -#include <QtCore/QUrl> #include <QtCore/QSize> +#include <QtCore/QUrl> -namespace QMatrixClient -{ - namespace EventContent - { - /** - * A base class for all content types that can be stored - * in a RoomMessageEvent - * - * Each content type class should have a constructor taking - * a QJsonObject and override fillJson() with an implementation - * that will fill the target QJsonObject with stored values. It is - * assumed but not required that a content object can also be created - * from plain data. - */ - class Base - { - public: - explicit Base (QJsonObject o = {}) : originalJson(std::move(o)) { } - virtual ~Base() = default; - - // FIXME: make toJson() from converters.* work on base classes - QJsonObject toJson() const; - - public: - QJsonObject originalJson; - - protected: - Base(const Base&) = default; - Base(Base&&) = default; - - virtual void fillJson(QJsonObject* o) const = 0; - }; +namespace QMatrixClient { +namespace EventContent { + /** + * A base class for all content types that can be stored + * in a RoomMessageEvent + * + * Each content type class should have a constructor taking + * a QJsonObject and override fillJson() with an implementation + * that will fill the target QJsonObject with stored values. It is + * assumed but not required that a content object can also be created + * from plain data. + */ + class Base { + public: + explicit Base(QJsonObject o = {}) : originalJson(std::move(o)) {} + virtual ~Base() = default; + + // FIXME: make toJson() from converters.* work on base classes + QJsonObject toJson() const; + + public: + QJsonObject originalJson; + + protected: + Base(const Base&) = default; + Base(Base&&) = default; + + virtual void fillJson(QJsonObject* o) const = 0; + }; + + // The below structures fairly follow CS spec 11.2.1.6. The overall + // set of attributes for each content types is a superset of the spec + // but specific aggregation structure is altered. See doc comments to + // each type for the list of available attributes. + + // A quick classes inheritance structure follows: + // FileInfo + // FileContent : UrlBasedContent<FileInfo, Thumbnail> + // AudioContent : UrlBasedContent<FileInfo, Duration> + // ImageInfo : FileInfo + imageSize attribute + // ImageContent : UrlBasedContent<ImageInfo, Thumbnail> + // VideoContent : UrlBasedContent<ImageInfo, Thumbnail, Duration> + + /** + * A base/mixin class for structures representing an "info" object for + * some content types. These include most attachment types currently in + * the CS API spec. + * + * In order to use it in a content class, derive both from TypedBase + * (or Base) and from FileInfo (or its derivative, such as \p ImageInfo) + * and call fillInfoJson() to fill the "info" subobject. Make sure + * to pass an "info" part of JSON to FileInfo constructor, not the whole + * JSON content, as well as contents of "url" (or a similar key) and + * optionally "filename" node from the main JSON content. Assuming you + * don't do unusual things, you should use \p UrlBasedContent<> instead + * of doing multiple inheritance and overriding Base::fillJson() by hand. + * + * This class is not polymorphic. + */ + class FileInfo { + public: + explicit FileInfo(const QUrl& u, qint64 payloadSize = -1, + const QMimeType& mimeType = {}, + const QString& originalFilename = {}); + FileInfo(const QUrl& u, const QJsonObject& infoJson, + const QString& originalFilename = {}); - // The below structures fairly follow CS spec 11.2.1.6. The overall - // set of attributes for each content types is a superset of the spec - // but specific aggregation structure is altered. See doc comments to - // each type for the list of available attributes. + bool isValid() const; - // A quick classes inheritance structure follows: - // FileInfo - // FileContent : UrlBasedContent<FileInfo, Thumbnail> - // AudioContent : UrlBasedContent<FileInfo, Duration> - // ImageInfo : FileInfo + imageSize attribute - // ImageContent : UrlBasedContent<ImageInfo, Thumbnail> - // VideoContent : UrlBasedContent<ImageInfo, Thumbnail, Duration> + void fillInfoJson(QJsonObject* infoJson) const; /** - * A base/mixin class for structures representing an "info" object for - * some content types. These include most attachment types currently in - * the CS API spec. - * - * In order to use it in a content class, derive both from TypedBase - * (or Base) and from FileInfo (or its derivative, such as \p ImageInfo) - * and call fillInfoJson() to fill the "info" subobject. Make sure - * to pass an "info" part of JSON to FileInfo constructor, not the whole - * JSON content, as well as contents of "url" (or a similar key) and - * optionally "filename" node from the main JSON content. Assuming you - * don't do unusual things, you should use \p UrlBasedContent<> instead - * of doing multiple inheritance and overriding Base::fillJson() by hand. + * \brief Extract media id from the URL * - * This class is not polymorphic. + * This can be used, e.g., to construct a QML-facing image:// + * URI as follows: + * \code "image://provider/" + info.mediaId() \endcode */ - class FileInfo - { - public: - explicit FileInfo(const QUrl& u, qint64 payloadSize = -1, - const QMimeType& mimeType = {}, - const QString& originalFilename = {}); - FileInfo(const QUrl& u, const QJsonObject& infoJson, - const QString& originalFilename = {}); - - bool isValid() const; - - void fillInfoJson(QJsonObject* infoJson) const; - - /** - * \brief Extract media id from the URL - * - * This can be used, e.g., to construct a QML-facing image:// - * URI as follows: - * \code "image://provider/" + info.mediaId() \endcode - */ - QString mediaId() const { return url.authority() + url.path(); } - - public: - QJsonObject originalInfoJson; - QMimeType mimeType; - QUrl url; - qint64 payloadSize; - QString originalName; - }; - - template <typename InfoT> - QJsonObject toInfoJson(const InfoT& info) - { - QJsonObject infoJson; - info.fillInfoJson(&infoJson); - return infoJson; - } + QString mediaId() const { return url.authority() + url.path(); } + + public: + QJsonObject originalInfoJson; + QMimeType mimeType; + QUrl url; + qint64 payloadSize; + QString originalName; + }; + + template <typename InfoT> + QJsonObject toInfoJson(const InfoT& info) + { + QJsonObject infoJson; + info.fillInfoJson(&infoJson); + return infoJson; + } + + /** + * A content info class for image content types: image, thumbnail, video + */ + class ImageInfo : public FileInfo { + public: + explicit ImageInfo(const QUrl& u, qint64 fileSize = -1, + QMimeType mimeType = {}, const QSize& imageSize = {}, + const QString& originalFilename = {}); + ImageInfo(const QUrl& u, const QJsonObject& infoJson, + const QString& originalFilename = {}); + + void fillInfoJson(QJsonObject* infoJson) const; + + public: + QSize imageSize; + }; + + /** + * An auxiliary class for an info type that carries a thumbnail + * + * This class saves/loads a thumbnail to/from "info" subobject of + * the JSON representation of event content; namely, + * "info/thumbnail_url" and "info/thumbnail_info" fields are used. + */ + class Thumbnail : public ImageInfo { + public: + Thumbnail() : ImageInfo(QUrl()) {} // To allow empty thumbnails + Thumbnail(const QJsonObject& infoJson); + Thumbnail(const ImageInfo& info) : ImageInfo(info) {} + using ImageInfo::ImageInfo; /** - * A content info class for image content types: image, thumbnail, video + * Writes thumbnail information to "thumbnail_info" subobject + * and thumbnail URL to "thumbnail_url" node inside "info". */ - class ImageInfo : public FileInfo + void fillInfoJson(QJsonObject* infoJson) const; + }; + + class TypedBase : public Base { + public: + explicit TypedBase(QJsonObject o = {}) : Base(std::move(o)) {} + virtual QMimeType type() const = 0; + virtual const FileInfo* fileInfo() const { return nullptr; } + virtual FileInfo* fileInfo() { return nullptr; } + virtual const Thumbnail* thumbnailInfo() const { return nullptr; } + + protected: + using Base::Base; + }; + + /** + * A base class for content types that have a URL and additional info + * + * Types that derive from this class template take "url" and, + * optionally, "filename" values from the top-level JSON object and + * the rest of information from the "info" subobject, as defined by + * the parameter type. + * + * \tparam InfoT base info class + */ + template <class InfoT> + class UrlBasedContent : public TypedBase, public InfoT { + public: + using InfoT::InfoT; + explicit UrlBasedContent(const QJsonObject& json) + : TypedBase(json) + , InfoT(json["url"].toString(), json["info"].toObject(), + json["filename"].toString()) { - public: - explicit ImageInfo(const QUrl& u, qint64 fileSize = -1, - QMimeType mimeType = {}, - const QSize& imageSize = {}, - const QString& originalFilename = {}); - ImageInfo(const QUrl& u, const QJsonObject& infoJson, - const QString& originalFilename = {}); - - void fillInfoJson(QJsonObject* infoJson) const; + // A small hack to facilitate links creation in QML. + originalJson.insert("mediaId", InfoT::mediaId()); + } - public: - QSize imageSize; - }; + QMimeType type() const override { return InfoT::mimeType; } + const FileInfo* fileInfo() const override { return this; } + FileInfo* fileInfo() override { return this; } - /** - * An auxiliary class for an info type that carries a thumbnail - * - * This class saves/loads a thumbnail to/from "info" subobject of - * the JSON representation of event content; namely, - * "info/thumbnail_url" and "info/thumbnail_info" fields are used. - */ - class Thumbnail : public ImageInfo + protected: + void fillJson(QJsonObject* json) const override { - public: - Thumbnail() : ImageInfo(QUrl()) { } // To allow empty thumbnails - Thumbnail(const QJsonObject& infoJson); - Thumbnail(const ImageInfo& info) : ImageInfo(info) { } - using ImageInfo::ImageInfo; - - /** - * Writes thumbnail information to "thumbnail_info" subobject - * and thumbnail URL to "thumbnail_url" node inside "info". - */ - void fillInfoJson(QJsonObject* infoJson) const; - }; - - class TypedBase: public Base + Q_ASSERT(json); + json->insert("url", InfoT::url.toString()); + if (!InfoT::originalName.isEmpty()) + json->insert("filename", InfoT::originalName); + json->insert("info", toInfoJson<InfoT>(*this)); + } + }; + + template <typename InfoT> + class UrlWithThumbnailContent : public UrlBasedContent<InfoT> { + public: + using UrlBasedContent<InfoT>::UrlBasedContent; + explicit UrlWithThumbnailContent(const QJsonObject& json) + : UrlBasedContent<InfoT>(json), thumbnail(InfoT::originalInfoJson) { - public: - explicit TypedBase(QJsonObject o = {}) : Base(std::move(o)) { } - virtual QMimeType type() const = 0; - virtual const FileInfo* fileInfo() const { return nullptr; } - virtual FileInfo* fileInfo() { return nullptr; } - virtual const Thumbnail* thumbnailInfo() const { return nullptr; } - - protected: - using Base::Base; - }; + // Another small hack, to simplify making a thumbnail link + UrlBasedContent<InfoT>::originalJson.insert("thumbnailMediaId", + thumbnail.mediaId()); + } - /** - * A base class for content types that have a URL and additional info - * - * Types that derive from this class template take "url" and, - * optionally, "filename" values from the top-level JSON object and - * the rest of information from the "info" subobject, as defined by - * the parameter type. - * - * \tparam InfoT base info class - */ - template <class InfoT> - class UrlBasedContent : public TypedBase, public InfoT - { - public: - using InfoT::InfoT; - explicit UrlBasedContent(const QJsonObject& json) - : TypedBase(json) - , InfoT(json["url"].toString(), json["info"].toObject(), - json["filename"].toString()) - { - // A small hack to facilitate links creation in QML. - originalJson.insert("mediaId", InfoT::mediaId()); - } - - QMimeType type() const override { return InfoT::mimeType; } - const FileInfo* fileInfo() const override { return this; } - FileInfo* fileInfo() override { return this; } - - protected: - void fillJson(QJsonObject* json) const override - { - Q_ASSERT(json); - json->insert("url", InfoT::url.toString()); - if (!InfoT::originalName.isEmpty()) - json->insert("filename", InfoT::originalName); - json->insert("info", toInfoJson<InfoT>(*this)); - } - }; - - template <typename InfoT> - class UrlWithThumbnailContent : public UrlBasedContent<InfoT> - { - public: - using UrlBasedContent<InfoT>::UrlBasedContent; - explicit UrlWithThumbnailContent(const QJsonObject& json) - : UrlBasedContent<InfoT>(json) - , thumbnail(InfoT::originalInfoJson) - { - // Another small hack, to simplify making a thumbnail link - UrlBasedContent<InfoT>::originalJson.insert( - "thumbnailMediaId", thumbnail.mediaId()); - } - - const Thumbnail* thumbnailInfo() const override - { return &thumbnail; } - - public: - Thumbnail thumbnail; - - protected: - void fillJson(QJsonObject* json) const override - { - UrlBasedContent<InfoT>::fillJson(json); - auto infoJson = json->take("info").toObject(); - thumbnail.fillInfoJson(&infoJson); - json->insert("info", infoJson); - } - }; + const Thumbnail* thumbnailInfo() const override { return &thumbnail; } - /** - * Content class for m.image - * - * Available fields: - * - corresponding to the top-level JSON: - * - url - * - filename (extension to the spec) - * - corresponding to the "info" subobject: - * - payloadSize ("size" in JSON) - * - mimeType ("mimetype" in JSON) - * - imageSize (QSize for a combination of "h" and "w" in JSON) - * - thumbnail.url ("thumbnail_url" in JSON) - * - corresponding to the "info/thumbnail_info" subobject: contents of - * thumbnail field, in the same vein as for the main image: - * - payloadSize - * - mimeType - * - imageSize - */ - using ImageContent = UrlWithThumbnailContent<ImageInfo>; + public: + Thumbnail thumbnail; - /** - * Content class for m.file - * - * Available fields: - * - corresponding to the top-level JSON: - * - url - * - filename - * - corresponding to the "info" subobject: - * - payloadSize ("size" in JSON) - * - mimeType ("mimetype" in JSON) - * - thumbnail.url ("thumbnail_url" in JSON) - * - corresponding to the "info/thumbnail_info" subobject: - * - thumbnail.payloadSize - * - thumbnail.mimeType - * - thumbnail.imageSize (QSize for "h" and "w" in JSON) - */ - using FileContent = UrlWithThumbnailContent<FileInfo>; - } // namespace EventContent -} // namespace QMatrixClient + protected: + void fillJson(QJsonObject* json) const override + { + UrlBasedContent<InfoT>::fillJson(json); + auto infoJson = json->take("info").toObject(); + thumbnail.fillInfoJson(&infoJson); + json->insert("info", infoJson); + } + }; + + /** + * Content class for m.image + * + * Available fields: + * - corresponding to the top-level JSON: + * - url + * - filename (extension to the spec) + * - corresponding to the "info" subobject: + * - payloadSize ("size" in JSON) + * - mimeType ("mimetype" in JSON) + * - imageSize (QSize for a combination of "h" and "w" in JSON) + * - thumbnail.url ("thumbnail_url" in JSON) + * - corresponding to the "info/thumbnail_info" subobject: contents of + * thumbnail field, in the same vein as for the main image: + * - payloadSize + * - mimeType + * - imageSize + */ + using ImageContent = UrlWithThumbnailContent<ImageInfo>; + + /** + * Content class for m.file + * + * Available fields: + * - corresponding to the top-level JSON: + * - url + * - filename + * - corresponding to the "info" subobject: + * - payloadSize ("size" in JSON) + * - mimeType ("mimetype" in JSON) + * - thumbnail.url ("thumbnail_url" in JSON) + * - corresponding to the "info/thumbnail_info" subobject: + * - thumbnail.payloadSize + * - thumbnail.mimeType + * - thumbnail.imageSize (QSize for "h" and "w" in JSON) + */ + using FileContent = UrlWithThumbnailContent<FileInfo>; +} // namespace EventContent +} // namespace QMatrixClient |