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wm: support TO_BACK command issued by decorator

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Until now, decorators used to rely only on the TO_FRONT command for
propagating the window stacking to nitpicker. However, as the additional
use of the TO_BACK command allows for a more robust procedure, this
patch enhances the wm to handle both view stacking commands.

Issue #3094
This commit is contained in:
Norman Feske 2018-12-23 16:26:06 +01:00
parent b3fa7b0650
commit dc9cd38189
1 changed files with 7 additions and 4 deletions
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11
repos/gems/src/server/wm/decorator_nitpicker.h
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@ -285,9 +285,14 @@ struct Wm::Decorator_nitpicker_session : Genode::Rpc_object<Nitpicker::Session>,
}
case Command::OP_TO_FRONT:
case Command::OP_TO_BACK:
try {
View_handle const view_handle = (cmd.opcode == Command::OP_TO_FRONT)
? cmd.to_front.view
: cmd.to_back.view;
/*
* If the content view is re-stacked, replace it by the real
* window content.
@ -295,7 +300,7 @@ struct Wm::Decorator_nitpicker_session : Genode::Rpc_object<Nitpicker::Session>,
* The lookup fails with an exception for non-content views.
* In this case, forward the command.
*/
Window_registry::Id win_id = _content_registry.lookup(cmd.to_front.view);
Window_registry::Id win_id = _content_registry.lookup(view_handle);
/*
* Replace content view originally created by the decorator
@ -304,8 +309,7 @@ struct Wm::Decorator_nitpicker_session : Genode::Rpc_object<Nitpicker::Session>,
Nitpicker::View_capability view_cap =
_content_callback.content_view(win_id);
_nitpicker_session.view_handle(view_cap,
cmd.to_front.view);
_nitpicker_session.view_handle(view_cap, view_handle);
_nitpicker_session.enqueue(cmd);
_nitpicker_session.execute();
@ -357,7 +361,6 @@ struct Wm::Decorator_nitpicker_session : Genode::Rpc_object<Nitpicker::Session>,
}
return;
case Command::OP_TO_BACK:
case Command::OP_BACKGROUND:
case Command::OP_NOP: