Copyright (c) 2015 Codethink Ltd Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. This includes handling the existence of seats, seat capabilities, seat acceptance and input focus. Set input focus state of surface in ivi compositor. If the surface has input focus, all non-graphical inputs (e.g. keyboard) are directed to the application providing the content for this surface. Multiple surfaces can have input focus at a time. If argument enabled is ILM_TRUE, input focus for this surface is enabled. If argument enabled is not ILM_TRUE, the input focus from this surface is removed. The new input focus state is provided in argument enabled: If enabled is ILM_TRUE, this surface now has input focus enabled. If enabled is not ILM_TRUE, this surface no longer has input focus. Set input acceptance of one seat for a surface. Surfaces may accept input acceptance from multiple seats at once. If argument 'accepted' is ILM_TRUE, the given seat's name will be added to the list of accepted seats. If argument 'accepted' is not ILM_TRUE, the given seat's name will be removed from the list of accepted seats. A surface has changed its input acceptance for a specific seat. If argument 'accepted' is ILM_TRUE, the surface now accepts the seat. If argument 'accepted' is not ILM_TRUE, the surface no longer accepts the seat.