1fac6ca34a
The aim is to be able to use separate delegate for things like codeblocks and quotes so that they can be styled differently. 
403 lines
15 KiB
C++
403 lines
15 KiB
C++
// SPDX-FileCopyrightText: 2023 James Graham <james.h.graham@protonmail.com>
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// SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
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#pragma once
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#include <QObject>
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#include <KFormat>
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#include <Quotient/eventitem.h>
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#include <Quotient/events/roomevent.h>
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#include <Quotient/events/roommessageevent.h>
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#include "enums/messagecomponenttype.h"
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class LinkPreviewer;
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class NeoChatRoom;
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class ReactionModel;
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/**
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* @class EventHandler
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*
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* This class is designed to handle a Quotient::RoomEvent allowing data to be extracted
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* in a form ready for the NeoChat UI.
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*
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* To use this properly both the room and the event should be set (and the event should
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* be from the given room).
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*
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* @note EventHandler will always try to return something even when not properly
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* initialised, this is usually the best empty value it can create with available
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* information. This is to minimize warnings from QML especially during startup
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* and room changes.
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*/
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class EventHandler
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{
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Q_GADGET
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public:
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EventHandler(const NeoChatRoom *room, const Quotient::RoomEvent *event);
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/**
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* @brief Return the Matrix ID of the event.
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*/
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QString getId() const;
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/**
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* @brief The MessageComponentType to use to visualise the main event content.
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*/
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MessageComponentType::Type messageComponentType() const;
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/**
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* @brief Get the author of the event in context of the room.
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*
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* This is different to getting a Quotient::User object
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* as neither of those can provide details like the displayName or avatarMediaId
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* without the room context as these can vary from room to room. This function
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* uses the room context and outputs the result as QVariantMap.
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*
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* An empty QVariantMap will be returned if the EventHandler hasn't had the room
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* intialised. An empty user (i.e. a QVariantMap with all the correct keys
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* but empty values) will be returned if the room has been set but not an event.
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*
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* @param isPending if the event is pending, i.e. has not been confirmed by
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* the server.
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*
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* @return a QVariantMap for the user with the following properties:
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* - isLocalUser - Whether the user is the local user.
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* - id - The matrix ID of the user.
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* - displayName - Display name in the context of this room.
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* - avatarSource - The mxc URL for the user's avatar in the current room.
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* - avatarMediaId - Avatar id in the context of this room.
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* - color - Color for the user.
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* - object - The Quotient::User object for the user.
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*
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* @sa Quotient::User
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*/
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QVariantMap getAuthor(bool isPending = false) const;
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/**
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* @brief Get the display name of the event author.
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*
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* This method is separate from getAuthor() and special in that it will return
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* the old display name of the author if the current event is one that caused it
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* to change. This allows for scenarios where the UI wishes to notify that a
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* user's display name has changed and what it changed from.
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*
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* @param isPending whether the event is pending as this cannot be derived from
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* just the event object.
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*/
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QString getAuthorDisplayName(bool isPending = false) const;
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/**
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* @brief Get the display name of the event author but with any newlines removed.
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*
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* Turns out you can put newlines in your display name so we need to handle that
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* primarily for the room list subtitle.
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*
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* @param isPending whether the event is pending as this cannot be derived from
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* just the event object.
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*/
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QString singleLineAuthorDisplayname(bool isPending = false) const;
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/**
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* @brief Return a QDateTime object for the event timestamp.
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*/
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QDateTime getTime(bool isPending = false, QDateTime lastUpdated = {}) const;
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/**
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* @brief Return a QString for the event timestamp.
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*
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* This is intended to return a string that is read for display in the UI without
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* any further manipulation required.
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*
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* @param relative whether the string is realtive to the current date, i.e.
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* Yesterday or Wednesday, etc.
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* @param format the QLocale::FormatType to use.
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* @param isPending whether the event is pending as this cannot be derived from
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* just the event object.
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* @param lastUpdated the time the event was last updated locally as this cannot be
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* obtained from the event.
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*/
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QString getTimeString(bool relative, QLocale::FormatType format = QLocale::ShortFormat, bool isPending = false, QDateTime lastUpdated = {}) const;
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/**
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* @brief Whether the event should be highlighted in the timeline.
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*
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* @note Messages in direct chats are never highlighted.
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*/
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bool isHighlighted();
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/**
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* @brief Whether the event should be hidden in the timeline.
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*
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* This could be for numerous reasons, e.g. if it's a replacement event, if the
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* user has hidden all state events or if the sender has been ignored by the local
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* user.
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*/
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bool isHidden();
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/**
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* @brief The input format of the body in the message.
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*
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* I.e. if the message has only a body the format will be Qt::PlainText, if it
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* has a formatted body it will be Qt::RichText.
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*/
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static Qt::TextFormat messageBodyInputFormat(const Quotient::RoomMessageEvent &event);
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/**
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* @brief Output a string for the room message content without any formatting.
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*
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* This is the content of the formatted_body key if present or the body key if
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* not.
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*/
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static QString rawMessageBody(const Quotient::RoomMessageEvent &event);
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/**
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* @brief Output a string for the message content ready for display in a rich text field.
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*
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* The output string is dependant upon the event type and the desired output format.
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*
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* For most messages this is the body content of the message. For media messages
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* this will be the caption and for state events it will be a string specific
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* to that event with some dynamic details about the event added.
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*
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* E.g. For a room topic state event the text will be:
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* "set the topic to: <new topic text>"
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*
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* @param stripNewlines whether the output should have new lines in it.
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*/
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QString getRichBody(bool stripNewlines = false) const;
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/**
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* @brief Output a string for the message content ready for display in a plain text field.
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*
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* The output string is dependant upon the event type and the desired output format.
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*
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* For most messages this is the body content of the message. For media messages
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* this will be the caption and for state events it will be a string specific
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* to that event with some dynamic details about the event added.
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*
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* E.g. For a room topic state event the text will be:
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* "set the topic to: <new topic text>"
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*
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* @param stripNewlines whether the output should have new lines in it.
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*/
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QString getPlainBody(bool stripNewlines = false) const;
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/**
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* @brief Output a generic string for the message content ready for display.
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*
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* The output string is dependant upon the event type.
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*
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* Unlike EventHandler::getRichBody or EventHandler::getPlainBody the string
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* is the same for all events of the same type.
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*
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* E.g. For a message the text will be:
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* "sent a message"
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*
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* @sa getRichBody(), getPlainBody()
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*/
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QString getGenericBody() const;
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/**
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* @brief Output a string for the event to be used as a RoomList subtitle.
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*
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* The output includes the username followed by the plain message, all with no
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* line breaks.
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*/
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QString subtitleText() const;
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/**
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* @brief Return the media info for the event.
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*
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* An empty QVariantMap will be returned for any event that doesn't have any
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* media info.
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*
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* @return This should consist of the following:
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* - source - The mxc URL for the media.
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* - mimeType - The MIME type of the media (should be image/xxx for this delegate).
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* - mimeIcon - The MIME icon name (should be image-xxx).
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* - size - The file size in bytes.
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* - width - The width in pixels of the audio media.
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* - height - The height in pixels of the audio media.
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* - tempInfo - mediaInfo (with the same properties as this except no tempInfo) for a temporary image while the file downloads.
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*/
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QVariantMap getMediaInfo() const;
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/**
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* @brief Whether the event is a reply to another in the timeline.
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*/
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bool hasReply() const;
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/**
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* @brief Return the Matrix ID of the event replied to.
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*/
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QString getReplyId() const;
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/**
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* @brief The MessageComponentType to use to visualise the reply content.
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*/
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MessageComponentType::Type replyMessageComponentType() const;
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/**
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* @brief Get the author of the event replied to in context of the room.
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*
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* This is different to getting a Quotient::User object
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* as neither of those can provide details like the displayName or avatarMediaId
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* without the room context as these can vary from room to room. This function
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* uses the room context and outputs the result as QVariantMap.
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*
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* An empty QVariantMap will be returned if the EventHandler hasn't had the room
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* intialised. An empty user (i.e. a QVariantMap with all the correct keys
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* but empty values) will be returned if the room has been set but not an event.
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*
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* @return a QVariantMap for the user with the following properties:
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* - isLocalUser - Whether the user is the local user.
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* - id - The matrix ID of the user.
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* - displayName - Display name in the context of this room.
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* - avatarSource - The mxc URL for the user's avatar in the current room.
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* - avatarMediaId - Avatar id in the context of this room.
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* - color - Color for the user.
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* - object - The Quotient::User object for the user.
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*
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* @sa Quotient::User
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*/
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QVariantMap getReplyAuthor() const;
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/**
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* @brief Output a string for the message content of the event replied to ready
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* for display in a rich text field.
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*
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* The output string is dependant upon the event type and the desired output format.
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*
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* For most messages this is the body content of the message. For media messages
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* this will be the caption and for state events it will be a string specific
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* to that event with some dynamic details about the event added.
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*
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* E.g. For a room topic state event the text will be:
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* "set the topic to: <new topic text>"
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*
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* @param stripNewlines whether the output should have new lines in it.
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*/
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QString getReplyRichBody(bool stripNewlines = false) const;
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/**
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* @brief Output a string for the message content of the event replied to ready
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* for display in a plain text field.
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*
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* The output string is dependant upon the event type and the desired output format.
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*
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* For most messages this is the body content of the message. For media messages
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* this will be the caption and for state events it will be a string specific
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* to that event with some dynamic details about the event added.
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*
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* E.g. For a room topic state event the text will be:
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* "set the topic to: <new topic text>"
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*
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* @param stripNewlines whether the output should have new lines in it.
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*/
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QString getReplyPlainBody(bool stripNewlines = false) const;
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/**
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* @brief Return the media info for the event replied to.
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*
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* An empty QVariantMap will be returned for any event that doesn't have any
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* media info.
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*
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* @return This should consist of the following:
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* - source - The mxc URL for the media.
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* - mimeType - The MIME type of the media (should be image/xxx for this delegate).
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* - mimeIcon - The MIME icon name (should be image-xxx).
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* - size - The file size in bytes.
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* - width - The width in pixels of the audio media.
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* - height - The height in pixels of the audio media.
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* - tempInfo - mediaInfo (with the same properties as this except no tempInfo) for a temporary image while the file downloads.
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*/
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QVariantMap getReplyMediaInfo() const;
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/**
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* @brief Whether the message is part of a thread.
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*
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* i.e. There is a rel_type of m.thread.
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*/
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bool isThreaded() const;
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/**
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* @brief Return the Matrix ID of the thread's root message.
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*
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* Empty if this not part of a thread.
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*/
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QString threadRoot() const;
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/**
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* @brief Return the latitude for the event.
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*
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* Returns -100.0 if the event doesn't have a location (latitudes are in the
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* range -90deg to +90deg so -100 is out of range).
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*/
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float getLatitude() const;
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/**
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* @brief Return the longitude for the event.
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*
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* Returns -200.0 if the event doesn't have a location (latitudes are in the
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* range -180deg to +180deg so -200 is out of range).
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*/
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float getLongitude() const;
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/**
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* @brief Return the type of location marker for the event.
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*/
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QString getLocationAssetType() const;
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/**
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* @brief Whether the event has any read marker for other users.
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*/
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bool hasReadMarkers() const;
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/**
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* @brief Returns a list of user read marker for the event.
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*
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* @param maxMarkers the maximum number of users to return. Usually the number
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* of user read makers shown is limited to not clutter the UI.
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* This needs to be the same as used in getNumberExcessReadMarkers
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* so that the markers line up with the number displayed, i.e.
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* the number of users shown plus the excess number will be
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* the total number of other user read markers at an event.
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*/
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QVariantList getReadMarkers(int maxMarkers = 5) const;
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/**
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* @brief Returns the number of excess user read markers for the event.
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*
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* This returns a string in the form "+ x" ready for use in the UI.
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*
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* @param maxMarkers the maximum number of markers shown in the UI. This needs to
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* be the same as used in getReadMarkers so that the value lines
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* up with the number displayed, i.e. the number of users shown
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* plus the excess number will be the total number of other user
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* read markers at an event.
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*/
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QString getNumberExcessReadMarkers(int maxMarkers = 5) const;
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/**
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* @brief Returns a string with the names of the read markers at the event.
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*
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* This is in the form "x users: name 1, name 2, ...".
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*/
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QString getReadMarkersString() const;
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private:
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const NeoChatRoom *m_room = nullptr;
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const Quotient::RoomEvent *m_event = nullptr;
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KFormat m_format;
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QString getBody(const Quotient::RoomEvent *event, Qt::TextFormat format, bool stripNewlines) const;
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QString getMessageBody(const Quotient::RoomMessageEvent &event, Qt::TextFormat format, bool stripNewlines) const;
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QVariantMap getMediaInfoForEvent(const Quotient::RoomEvent *event) const;
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QVariantMap getMediaInfoFromFileInfo(const Quotient::EventContent::FileInfo *fileInfo, const QString &eventId, bool isThumbnail = false) const;
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};
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