Copyright © 2024 outfoxxed All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. This protocol allows clients to limit input focus to a specific set of surfaces and receive a notification when the limiter is removed as detailed below. This interface allows a client to create surface grab objects. Create a surface grab object. Destroy the focus grab manager. This doesn't destroy existing focus grab objects. This interface restricts input focus to a specified whitelist of surfaces as long as the focus grab object exists and has at least one comitted surface. Mouse and touch events inside a whitelisted surface will be passed to the surface normally, while events outside of a whitelisted surface will clear the grab object. Keyboard events will be passed to the client and a compositor-picked surface in the whitelist will receive a wl_keyboard::enter event if a whitelisted surface is not already entered. Upon meeting implementation-defined criteria usually meaning a mouse or touch input outside of any whitelisted surfaces, the compositor will clear the whitelist, rendering the grab inert and sending the cleared event. The same will happen if another focus grab or similar action is started at the compositor's discretion. Add a surface to the whitelist. Destroying the surface is treated the same as an explicit call to remove_surface and duplicate additions are ignored. Does not take effect until commit is called. Remove a surface from the whitelist. Destroying the surface is treated the same as an explicit call to this function. If the grab was active and the removed surface was entered by the keyboard, another surface will be entered on commit. Does not take effect until commit is called. Commit pending changes to the surface whitelist. If the list previously had no entries and now has at least one, the grab will start. If it previously had entries and now has none, the grab will become inert. Destroy the grab object and remove the grab if active. Sent when an active grab is cancelled by the compositor, regardless of cause.