Description: Crosswalk for Linux still doesn’t support ‘File Picker’ now. Since it’s a widely supported feature - especially for desktop - we’re planning to implement it.
Affected component: Crosswalk on Linux Related feature: XWALK-950<https://crosswalk-project.org/jira/browse/XWALK-950> Target release: Crosswalk 14 Implementation details: 1．Inherit ‘ui::LinuxShellDialog’ to implement the factory class of ‘File Picker’ dialog. Only ‘ui::LinuxShellDialog::CreateSelectFileDialog’ needs to be overridden. 2. In ‘XWalkBrowserMainParts::PreEarlyInitialization’, feed the instance of the factory class to Content. 3. Implement a common child class of ‘ui::SelectFileDialog’ and ‘aura::WindowObserver’. Mostly, it’s referring to the code of ‘select_file_dialog_impl_gtk2.cc’ of Chrome. Misc.: Actually, we’ve already written a draft patch to test our design. It only brings two new ‘.cc’ files and has loose couple with ‘Cromium::ui’ - only need to implement some interfaces of base class. And it’s a pretty independent module, can changed to another type of UI (e.g. web UI) easily. Regards, Peter Wang
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