Copyright © 2012 Intel Corporation Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of the copyright holders not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. The copyright holders make no representations about the suitability of this software for any purpose. It is provided "as is" without express or implied warranty. THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. A model for text input. Adds support for text input and input methods to applications. A text_model object is created from a text_model_factory and corresponds typically to a text entry in an application. Requests are used to activate/deactivate the model and set information like surrounding and selected text or the content type. The information about entered text is sent to the model via the pre-edit and commit events. Using this interface removes the need for applications to directly process hardware key events and compose text out of them. Sets the plain surrounding text around the input position. Cursor is the position within the surrounding text. Anchor is the position of the selection anchor within the surrounding text. If there is no selected text anchor is the same as cursor. Requests the model to be activated (typically when the text entry gets focus). The seat argument is a wl_seat which maintains the focus for this activation. The surface argument is a wl_surface assigned to the model and tracked for focus lost. The activated event is emitted on successful activation. Requests the model to be deactivated (typically when the text entry lost focus). The seat argument is a wl_seat which was used for activation. Notify the model when it is activated. Typically in response to an activate request. Notify the model when it is deactivated. Either in response to a deactivate request or when the assigned surface lost focus or was destroyed. A factory for text models. This object is a singleton global. Creates a new text model object.