No preview in image selection dialog on Ubuntu

[ArtemZ]

Description

File selection dialog called by riot-web has no preview feature

Steps to reproduce

• Install the most recent version of riot-web availble on Ubuntu Linux 16.04 (0.15.4 in my case)
• Sign in and try to send a picture to one of your contacts or to a room by clicking "Upload file" icon at the left bottom part of the riot-web interface
• In file selection dialog navigate to a folder with reasonably sized pictures, select one of them

Expected behavior: file selection dialog provides preview of selected image

Version information

• Platform: desktop

• OS: Ubuntu 16.04

• Version: 0.15.4 from https://riot.im/packages/debian xenial/main amd64 Packages

[t3chguy]

huh thats bizarre

[ArtemZ]

Related to this electron issue? electron/electron#2911

[t3chguy]

Perhaps, Telegram wrote native code for this.
https://github.com/telegramdesktop/tdesktop/blob/958d55a594364cb92debc1aeb4ea158f9107f0a4/Telegram/SourceFiles/storage/file_upload.cpp

[ArtemZ]

@t3chguy file_upload.cpp doesn't seem to have much to do with type of gtk file selection dialog, more like internal telegram file uploading handler

[Thatoo]

It is still true with Ubuntu 18.04