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Use Chrome file dialogs on all platforms and runtimes (fixes issue #3314)

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All file dialogs irrespective of source, platform and runtime will now be
routed through CefFileDialogManager and trigger CefDialogHandler callbacks
(see issue #3293).

Adds Chrome runtime support for CefBrowserHost::RunFileDialog and
CefDialogHandler callbacks.

Adds Alloy runtime support for internal GTK file and print dialogs on Linux
subject to the following limitations:

1. Internal GTK implementation:
   - Cannot be used with multi-threaded-message-loop because Chromium's
     internal GTK implementation is not thread-safe (does not use GDK threads).
   - Dialogs will not be modal to application windows when used with off-screen
     rendering due to lack of access to the client's top-level GtkWindow.
2. Cefclient CefDialogHandler implementation:
   - Cannot be used with Views because it requires a top-level GtkWindow.

Due to the above limitations no dialog implementation is currently provided for
Views + multi-threaded-message-loop on Linux. In cases where both
implementations are supported the cefclient version is now behind an optional
`--use-client-dialogs` command-line flag.

Expressly forbids multiple simultaneous file dialogs with the internal platform
implementation which uses modal dialogs. CefDialogHandler will still be notified
and can optionally handle each request without a modal dialog (see issue #3154).

Removes some RunFileDialog parameters that are not supported by the Chrome file
dialog implementation (selected_accept_filter parameter, cef_file_dialog_mode_t
overwrite/read-only flags).
This commit is contained in:
Marshall Greenblatt
2022-04-15 15:55:23 -04:00
parent edef01f579
commit 2ea7459a89
75 changed files with 1566 additions and 2231 deletions
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20
include/cef_dialog_handler.h
View File

@ -48,16 +48,12 @@
class CefFileDialogCallback : public virtual CefBaseRefCounted {
public:
///
// Continue the file selection. |selected_accept_filter| should be the 0-based
// index of the value selected from the accept filters array passed to
// CefDialogHandler::OnFileDialog. |file_paths| should be a single value or a
// Continue the file selection. |file_paths| should be a single value or a
// list of values depending on the dialog mode. An empty |file_paths| value is
// treated the same as calling Cancel().
///
/*--cef(capi_name=cont,index_param=selected_accept_filter,
optional_param=file_paths)--*/
virtual void Continue(int selected_accept_filter,
const std::vector<CefString>& file_paths) = 0;
/*--cef(capi_name=cont,optional_param=file_paths)--*/
virtual void Continue(const std::vector<CefString>& file_paths) = 0;
///
// Cancel the file selection.
@ -85,19 +81,17 @@ class CefDialogHandler : public virtual CefBaseRefCounted {
// (a) valid lower-cased MIME types (e.g. "text/*" or "image/*"),
// (b) individual file extensions (e.g. ".txt" or ".png"), or (c) combined
// description and file extension delimited using "|" and ";" (e.g.
// "Image Types|.png;.gif;.jpg"). |selected_accept_filter| is the 0-based
// index of the filter that should be selected by default. To display a custom
// dialog return true and execute |callback| either inline or at a later time.
// To display the default dialog return false.
// "Image Types|.png;.gif;.jpg"). To display a custom dialog return true and
// execute |callback| either inline or at a later time. To display the default
// dialog return false.
///
/*--cef(optional_param=title,optional_param=default_file_path,
optional_param=accept_filters,index_param=selected_accept_filter)--*/
optional_param=accept_filters)--*/
virtual bool OnFileDialog(CefRefPtr<CefBrowser> browser,
FileDialogMode mode,
const CefString& title,
const CefString& default_file_path,
const std::vector<CefString>& accept_filters,
int selected_accept_filter,
CefRefPtr<CefFileDialogCallback> callback) {
return false;
}