diff --git a/staging/input-method/README b/staging/input-method/README new file mode 100644 index 0000000..46c9cf8 --- /dev/null +++ b/staging/input-method/README @@ -0,0 +1,4 @@ +Input method protocol + +Maintainers: +Eivind Gamst eivindgamst@proton.me diff --git a/staging/input-method/input-method-v3.xml b/staging/input-method/input-method-v3.xml new file mode 100644 index 0000000..d47448e --- /dev/null +++ b/staging/input-method/input-method-v3.xml @@ -0,0 +1,595 @@ + + + + Copyright © 2008-2011 Kristian Høgsberg + Copyright © 2010-2011 Intel Corporation + Copyright © 2012-2013 Collabora, Ltd. + Copyright © 2012, 2013 Intel Corporation + Copyright © 2015, 2016 Jan Arne Petersen + Copyright © 2017, 2018 Red Hat, Inc. + Copyright © 2018, 2021 Purism SPC + Copyright © 2021, 2024 Simon Ser + Copyright © 2024 Eivind Gamst + + 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 (including the next + paragraph) 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 protocol allows applications to act as input methods for compositors. + + An input method context is used to manage the state of the input method. + + Text strings are UTF-8 encoded, their indices and lengths are in bytes. + + This document adheres to the RFC 2119 when using words like "must", + "should", "may", etc. + + + + + An input method object allows for clients to compose text. + + The objects connects the client to a text input in an application, and + lets the client to serve as an input method for a seat. + + The wp_input_method_v3 object can occupy two distinct states: active and + inactive. In the active state, the object is associated to and + communicates with a text input. In the inactive state, there is no + associated text input, and the only communication is with the compositor. + Initially, the input method is in the inactive state. + + Requests issued in the inactive state must be accepted by the compositor. + Because of the serial mechanism, and the state reset on activate event, + they will not have any effect on the state of the next text input. + + + + + Destroys the wp_input_method_v3 object and any associated child + objects, i.e. wp_input_popup_surface_v3 + + + + + + Notification that a text input focused on this seat requested the input + method to be activated. + + This event serves the purpose of providing the compositor with an + active input method. + + This event resets all state associated with previous enable, disable, + surrounding_text, text_change_cause, and content_type events, as well + as the state associated with set_preedit_string, commit_string, and + delete_surrounding_text requests. In addition, it marks the + wp_input_method_v3 object as active. + + The surrounding_text, and content_type events must follow before the + next done event if the text input supports the respective + functionality. + + State set with this event is double-buffered. It will get applied on + the next wp_input_method_v3.done event, and stay valid until changed. + + The app ID identifies the general class of applications to which + the current input method context belongs. An input method framework + can use this to manage individual state for different text input + clients. + + For D-Bus activatable applications, the app ID is used as the D-Bus + service name. + + The compositor shell will try to group application surfaces together + by their app ID. As a best practice, it is suggested to select app + ID's that match the basename of the application's .desktop file. + For example, "org.freedesktop.FooViewer" where the .desktop file is + "org.freedesktop.FooViewer.desktop". + + See the desktop-entry specification [0] for more details on + application identifiers and how they relate to well-known D-Bus + names and .desktop files. + + [0] http://standards.freedesktop.org/desktop-entry-spec/ + + + + + + + Notification that no focused text input currently needs an active + input method on this seat. + + This event marks the wp_input_method_v3 object as inactive. The + compositor must make all existing wp_input_popup_surface_v3 objects + invisible until the next activate event. + + State set with this event is double-buffered. It will get applied on + the next wp_input_method_v3.done event, and stay valid until changed. + + + + + + Notification that a text input focused on this seat has been destroyed. + + This event serves the purpose of providing the input method with + information of when and which text input has been destroyed. + + This event removed all state associated with a text input. + + The app ID identifies the general class of applications to which + the current input method context belongs. An input method framework + can use this to manage individual state for different text input + clients. + + For D-Bus activatable applications, the app ID is used as the D-Bus + service name. + + The compositor shell will try to group application surfaces together + by their app ID. As a best practice, it is suggested to select app + ID's that match the basename of the application's .desktop file. + For example, "org.freedesktop.FooViewer" where the .desktop file is + "org.freedesktop.FooViewer.desktop". + + See the desktop-entry specification [0] for more details on + application identifiers and how they relate to well-known D-Bus + names and .desktop files. + + [0] http://standards.freedesktop.org/desktop-entry-spec/ + + + + + + + Updates the surrounding plain text around the cursor, excluding the + preedit text. + + If any preedit text is present, it is replaced with the cursor for the + purpose of this event. + + The argument text is a buffer containing the preedit string, and must + include the cursor position, and the complete selection. It should + contain additional characters before and after these. There is a + maximum length of wayland messages, so text can not be longer than 4000 + bytes. + + cursor is the byte offset of the cursor within the text buffer. + + anchor is the byte offset of the selection anchor within the text + buffer. If there is no selected text, anchor must be the same as + cursor. + + If this event does not arrive before the first done event, the input + method may assume that the text input does not support this + functionality and ignore following surrounding_text events. + + Values set with this event are double-buffered. They will get applied + and set to initial values on the next wp_input_method_v3.done + event. + + The initial state for affected fields is empty, meaning that the text + input does not support sending surrounding text. If the empty values + get applied, subsequent attempts to change them may have no effect. + + + + + + + + + Tells the input method why the text surrounding the cursor changed. + + Whenever the client detects an external change in text, cursor, or + anchor position, it must issue this request to the compositor. This + request is intended to give the input method a chance to update the + preedit text in an appropriate way, e.g. by removing it when the user + starts typing with a keyboard. + + cause describes the source of the change. + + The value set with this event is double-buffered. It will get applied + and set to its initial value on the next wp_input_method_v3.done + event. + + The initial value of cause is input_method. + + + + + + + Indicates the content type and hint for the current + wp_input_method_v3 instance. + + Values set with this event are double-buffered. They will get applied + on the next wp_input_method_v3.done event. + + The initial value for hint is none, and the initial value for purpose + is normal. + + + + + + + + Apply state changes from commit_string, set_preedit_string and + delete_surrounding_text requests. + + The state relating to these events is double-buffered, and each one + modifies the pending state. This request replaces the current state + with the pending state. + + The connected text input is expected to proceed by evaluating the + changes in the following order: + + 1. Replace existing preedit string with the cursor. + 2. Delete requested surrounding text. + 3. Insert commit string with the cursor at its end. + 4. Calculate surrounding text to send. + 5. Insert new preedit text in cursor position. + 6. Place cursor inside preedit text. + + The serial number reflects the last state of the wp_input_method_v3 + object known to the client. The value of the serial argument must be + equal to the number of done events already issued by that object. When + the compositor receives a commit request with a serial different than + the number of past done events, it must proceed as normal, except it + should not change the current state of the wp_input_method_v3 object. + + + + + + + Atomically applies state changes recently sent to the client. + + The done event establishes and updates the state of the client, and + must be issued after any changes to apply them. + + Text input state (content purpose, content hint, surrounding text, and + change cause) is conceptually double-buffered within an input method + context. + + Events modify the pending state, as opposed to the current state in use + by the input method. A done event atomically applies all pending state, + replacing the current state. After done, the new pending state is as + documented for each related request. + + Events must be applied in the order of arrival. + + Neither current nor pending state are modified unless noted otherwise. + + + + + + Send the pre-edit string text to the application text input. + + Place a new composing text (pre-edit) at the current cursor position. + Any previously set composing text must be removed. Any previously + existing selected text must be removed. The cursor is moved to a new + position within the preedit string. + + The argument text is a buffer containing the preedit string. There is + a maximum length of wayland messages, so text can not be longer than + 4000 bytes. + + The arguments cursor_begin and cursor_end are counted in bytes relative + to the beginning of the submitted string buffer. Cursor should be + hidden by the text input when both are equal to -1. + + cursor_begin indicates the beginning of the cursor. cursor_end + indicates the end of the cursor. It may be equal or different than + cursor_begin. + + Values set with this event are double-buffered. They must be applied on + the next wp_input_method_v3.commit event. + + The initial value of text is an empty string. The initial value of + cursor_begin, and cursor_end are both 0. + + + + + + + + + Send the string text for insertion to the application. + + Inserts a string at current cursor position (see commit event + sequence). The string to commit could be either just a single character + after a key press or the result of some composing. + + The argument text is a buffer containing the string to insert. There is + a maximum length of wayland messages, so text can not be longer than + 4000 bytes. + + Values set with this event are double-buffered. They must be applied + and reset to initial on the next wp_text_input_v3.commit request. + + The initial value of text is an empty string. + + + + + + + Remove the surrounding text. + + before_length and after_length are the number of bytes before and after + the current cursor index (excluding the preedit text) to delete. + + If any preedit text is present, it is replaced with the cursor for the + purpose of this event. In effect before_length is counted from the + beginning of preedit text, and after_length from its end (see commit + event sequence). + + Values set with this event are double-buffered. They must be applied + and reset to initial on the next wp_input_method_v3.commit request. + + The initial values of both before_length and after_length are 0. + + + + + + + + This event provides a file descriptor to the client which can be + memory-mapped to provide a keyboard mapping description. + + + + + + + + + Informs the client about the keyboard's repeat rate and delay. + + This event is sent as soon as the wp_input_method_v3 + object has been created, and is guaranteed to be received by the + client before any key press event. + + Negative values for either rate or delay are illegal. A rate of zero + will disable any repeating (regardless of the value of delay). + + This event can be sent later on as well with a new value if necessary, + so clients should continue listening for the event past the creation + of wp_input_method_v3. + + + + + + + + + + + + A key was pressed or released, forwarded from text input client. + The time argument is a timestamp with millisecond granularity, with an + undefined base. + + + + + + + + + + Notifies input method that the modifier and/or group state has changed, + and it should update its local state. Forwarded from text-input. + + + + + + + + + + + Send a key serial back to the compositor so it can forward it to the client, + also indicates if keyrepeat is in effect so the compositor can emulate + key repeat by sending a fake key release after the key press. + + + + + + + + Indicates if the forwarded key is repeating or not + + + + + + + + This event indicates which actions are supported by the text input. + + Values set with this event are double-buffered. They will get applied + on the next wp_input_method_v3.done event. + + Initially, no actions are available. + + + + + + + Set the action to be performed on commit. + + Values set with this event are double-buffered. They must be applied + and reset to initial on the next wp_input_method_v3.commit request. + + + + + + + Notify the application of language used by the input method. + + This event will be sent on creation if known and for all subsequent changes. + + The language should be specified as an IETF BCP 47 tag. + Setting an empty string will reset any known language back to the default unknown state. + + + + + + + Specify how the visible preedit should be handled + when switching the focus widget or changing the cursor position, + whether to commit the preedit text or clear the preedit text. + + This is usually used together with the preedit_string event. + + The commit behavior is the same for focus switch and + cursor position change. + + The parameter mode selects the desired behavior and + its value is one from the commit mode enum. + + + + + + + Sets styling information on composing text. + Event sent without preedit string sets a default style for all future + preedit text. + + The parameters begin and end are counted in bytes relative to the + beginning of the text buffer submitted through + wp_text_input_v3.preedit_string. + + Multiple events may be submitted if the preedit string has different + sections. Compositors/input method must not send multiple + wp_text_input_v3.preedit_underline events with overlapping extents. + + Clients should pick colors appropriate for their color scheme, + underline colors follows text color. For parts of the preedit string + that are not covered by any wp_text_input_v3.preedit_hint event, + or if no events were sent, the text will be considered unstyled. + + Values set with this event are double-buffered. They must be applied + and reset on the next wp_text_input_v3.done event. + + + + + + + + + + + This tells the compositor to assign parents to an xdg_popup. + This popup should have been created via xdg_surface::get_popup + with the parent set to NULL, and this request must be invoked + before committing the popup's initial state. + + See the documentation of xdg_popup for more details about what an + xdg_popup is and how it is used. + + + + + + + Marks an area around the cursor as a x, y, width, height rectangle in + surface local coordinates. + + Allows the compositor to put a window with word suggestions near the + cursor, without obstructing the text being input. + + If the client is unaware of the position of edited text, it should not + issue this request, to signify lack of support to the compositor. + + Values set with this request are double-buffered. They will get applied + on the next wp_text_input_v3.commit request, and stay valid until the + next committed enable or disable request. + + The initial values describing a cursor rectangle are empty. That means + the text input does not support describing the cursor area. If the + empty values get applied, subsequent attempts to change them may have + no effect. + + As of version 2, the values sent with this request are not used + immediately after they are applied to the text-input state. + + After the pending state is applied with the wp_text_input_v3.commit + request, the following wl_surface.commit request on the surface with + text-input focus will cause the values to become active. + + If the surface with text-input focus changes before a wl_surface.commit + request is sent, the values are discarded. + + + + + + + + + + + The input method manager allows the client to become an input method on + a chosen seat. + + There can be several input methods running but only one method should be + associated with one text input client. + + To avoid key logging this is a priviledged protocol. + + + + + Request a new input wp_input_method_v3 object associated with a given + seat. + + + + + + + + + Destroys the wp_input_method_manager_v3 object. + + The wp_input_method_v3 objects originating from it remain valid. + + + + diff --git a/staging/text-input/text-input-v3.xml b/staging/text-input/text-input-v3.xml new file mode 100644 index 0000000..4664308 --- /dev/null +++ b/staging/text-input/text-input-v3.xml @@ -0,0 +1,664 @@ + + + + Copyright © 2012, 2013 Intel Corporation + Copyright © 2015, 2016 Jan Arne Petersen + Copyright © 2017, 2018 Red Hat, Inc. + Copyright © 2018 Purism SPC + + 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. + + + + This protocol allows compositors to act as input methods and to send text + to applications. A text input object is used to manage state of what are + typically text entry fields in the application. + + This document adheres to the RFC 2119 when using words like "must", + "should", "may", etc. + + Warning! The protocol described in this file is experimental and + backward incompatible changes may be made. Backward compatible changes + may be added together with the corresponding interface version bump. + Backward incompatible changes are done by bumping the version number in + the protocol and interface names and resetting the interface version. + Once the protocol is to be declared stable, the 'z' prefix and the + version number in the protocol and interface names are removed and the + interface version number is reset. + + + + + The wp_text_input_v3 interface represents text input and input methods + associated with a seat. It provides enter/leave events to follow the + text input focus for a seat. + + Requests are used to enable/disable the text-input object and set + state information like surrounding and selected text or the content type. + The information about the entered text is sent to the text-input object + via the preedit_string and commit_string events. + + Text is valid UTF-8 encoded, indices and lengths are in bytes. Indices + must not point to middle bytes inside a code point: they must either + point to the first byte of a code point or to the end of the buffer. + Lengths must be measured between two valid indices. + + Focus moving throughout surfaces will result in the emission of + wp_text_input_v3.enter and wp_text_input_v3.leave events. The focused + surface must commit wp_text_input_v3.enable and + wp_text_input_v3.disable requests as the keyboard focus moves across + editable and non-editable elements of the UI. Those two requests are not + expected to be paired with each other, the compositor must be able to + handle consecutive series of the same request. + + State is sent by the state requests (set_surrounding_text, + set_content_type and set_cursor_rectangle) and a commit request. After an + enter event or disable request all state information is invalidated and + needs to be resent by the client. + + + + + Destroy the wp_text_input object. Also disables all surfaces enabled + through this wp_text_input object. + + + + + + Requests text input on the surface previously obtained from the enter + event. + + This request must be issued every time the active text input changes + to a new one, including within the current surface. Use + wp_text_input_v3.disable when there is no longer any input focus on + the current surface. + + Clients must not enable more than one text input on the single seat + and should disable the current text input before enabling the new one. + At most one instance of text input may be in enabled state per instance, + Requests to enable the another text input when some text input is active + must be ignored by compositor. + + This request resets all state associated with previous enable, disable, + set_surrounding_text, set_text_change_cause, set_content_type, and + set_cursor_rectangle requests, as well as the state associated with + preedit_string, commit_string, and delete_surrounding_text events. + + The set_surrounding_text, set_content_type and set_cursor_rectangle + requests must follow if the text input supports the necessary + functionality. + + State set with this request is double-buffered. It will get applied on + the next wp_text_input_v3.commit request, and stay valid until the + next committed enable or disable request. + + The changes must be applied by the compositor after issuing a + wp_text_input_v3.commit request. + + Some clients need to reset the input method state. + To reset the input method state, the client needs to send the disable + request, the enable request, and the commit request sequence. + The compositing manager will reset the input method. + + + + + + Explicitly disable text input on the current surface (typically when + there is no focus on any text entry inside the surface). + + State set with this request is double-buffered. It will get applied on + the next wp_text_input_v3.commit request. + + Some clients need to reset the input method state. + To reset the input method state, the client needs to send the disable + request, the enable request, and the commit request sequence. + The compositing manager will reset the input method. + + + + + + Sets the surrounding plain text around the input, excluding the preedit + text. + + The client should notify the compositor of any changes in any of the + values carried with this request, including changes caused by handling + incoming text-input events as well as changes caused by other + mechanisms like keyboard typing. + + If the client is unaware of the text around the cursor, it should not + issue this request, to signify lack of support to the compositor. + + Text is UTF-8 encoded, and should include the cursor position, the + complete selection and additional characters before and after them. + There is a maximum length of wayland messages, so text can not be + longer than 4000 bytes. + + Cursor is the byte offset of the cursor within text buffer. + + Anchor is the byte offset of the selection anchor within text buffer. + If there is no selected text, anchor is the same as cursor. + + If any preedit text is present, it is replaced with a cursor for the + purpose of this event. + + Values set with this request are double-buffered. They will get applied + on the next wp_text_input_v3.commit request, and stay valid until the + next committed enable or disable request. + + The initial state for affected fields is empty, meaning that the text + input does not support sending surrounding text. If the empty values + get applied, subsequent attempts to change them may have no effect. + + + + + + + + + Reason for the change of surrounding text or cursor posision. + + + + + + + + Tells the compositor why the text surrounding the cursor changed. + + Whenever the client detects an external change in text, cursor, or + anchor posision, it must issue this request to the compositor. This + request is intended to give the input method a chance to update the + preedit text in an appropriate way, e.g. by removing it when the user + starts typing with a keyboard. + + cause describes the source of the change. + + The value set with this request is double-buffered. It must be applied + and reset to initial at the next wp_text_input_v3.commit request. + + The initial value of cause is input_method. + + + + + + + Content hint is a bitmask to allow to modify the behavior of the text + input. + + + + + + + + + + + + + + + + + + + + The content purpose allows to specify the primary purpose of a text + input. + + This allows an input method to show special purpose input panels with + extra characters or to disallow some characters. + + + + + + + + + + + + + + + + + + + + Sets the content purpose and content hint. While the purpose is the + basic purpose of an input field, the hint flags allow to modify some of + the behavior. + + Values set with this request are double-buffered. They will get applied + on the next wp_text_input_v3.commit request. + Subsequent attempts to update them may have no effect. The values + remain valid until the next committed enable or disable request. + + The initial value for hint is none, and the initial value for purpose + is normal. + + + + + + + + Marks an area around the cursor as a x, y, width, height rectangle in + surface local coordinates. + + Allows the compositor to put a window with word suggestions near the + cursor, without obstructing the text being input. + + If the client is unaware of the position of edited text, it should not + issue this request, to signify lack of support to the compositor. + + Values set with this request are double-buffered. They will get applied + on the next wp_text_input_v3.commit request, and stay valid until the + next committed enable or disable request. + + The initial values describing a cursor rectangle are empty. That means + the text input does not support describing the cursor area. If the + empty values get applied, subsequent attempts to change them may have + no effect. + + As of version 2, the values sent with this request are not used + immediately after they are applied to the text-input state. + + After the pending state is applied with the wp_text_input_v3.commit + request, the following wl_surface.commit request on the surface with + text-input focus will cause the values to become active. + + If the surface with text-input focus changes before a wl_surface.commit + request is sent, the values are discarded. + + + + + + + + + + Atomically applies state changes recently sent to the compositor. + + The commit request establishes and updates the state of the client, and + must be issued after any changes to apply them. + + Text input state (enabled status, content purpose, content hint, + surrounding text and change cause, cursor rectangle) is conceptually + double-buffered within the context of a text input, i.e. between a + committed enable request and the following committed enable or disable + request. + + Protocol requests modify the pending state, as opposed to the current + state in use by the input method. A commit request atomically applies + all pending state, replacing the current state. After commit, the new + pending state is as documented for each related request. + + Requests are applied in the order of arrival. + + Neither current nor pending state are modified unless noted otherwise. + + The compositor must count the number of commit requests coming from + each wp_text_input_v3 object and use the count as the serial in done + events. + + + + + + Instruct the application to apply changes to state requested by the + preedit_string, commit_string, delete_surrounding_text and action + events. + + The state relating to these events is double-buffered, and each one + modifies the pending state. This event replaces the current state with + the pending state. + + The application must proceed by evaluating the changes in the following + order: + + 1. Replace existing preedit string with the cursor. + 2. Delete requested surrounding text. + 3. Insert commit string with the cursor at its end. + 4. Calculate surrounding text to send. + 5. Insert new preedit text in cursor position. + 6. Place cursor inside preedit text. + 7. Perform the requested action. + + The serial number reflects the last state of the wp_text_input_v3 + object known to the compositor. The value of the serial argument must + be equal to the number of commit requests already issued on that object. + + When the client receives a done event with a serial different than the + number of past commit requests, it must proceed with evaluating and + applying the changes as normal, except it should not change the current + state of the wp_text_input_v3 object. All pending state requests + (set_surrounding_text, set_content_type and set_cursor_rectangle) on + the wp_text_input_v3 object should be sent and committed after + receiving a wp_text_input_v3.done event with a matching serial. + + + + + + + Notify when a new composing text (pre-edit) should be set at the + current cursor position. Any previously set composing text must be + removed. Any previously existing selected text must be removed. + + The argument text contains the pre-edit string buffer. + + The parameters cursor_begin and cursor_end are counted in bytes + relative to the beginning of the submitted text buffer. Cursor should + be hidden when both are equal to -1. + + They could be represented by the client as a line if both values are + the same, or as a text highlight otherwise. + + Values set with this event are double-buffered. They must be applied + and reset to initial on the next wp_text_input_v3.done event. + + The initial value of text is an empty string, and cursor_begin, + cursor_end and cursor_hidden are all 0. + + + + + + + + + Notify when text should be inserted into the editor widget. The text to + commit could be either just a single character after a key press or the + result of some composing (pre-edit). + + Values set with this event are double-buffered. They must be applied + and reset to initial on the next wp_text_input_v3.done event. + + The initial value of text is an empty string. + + + + + + + Notify when the text around the current cursor position should be + deleted. + + Before_length and after_length are the number of bytes before and after + the current cursor index (excluding the selection) to delete. + + If a preedit text is present, in effect before_length is counted from + the beginning of it, and after_length from its end (see done event + sequence). + + Values set with this event are double-buffered. They must be applied + and reset to initial on the next wp_text_input_v3.done event. + + The initial values of both before_length and after_length are 0. + + + + + + + + Notification that this seat's text-input focus is on a certain surface. + + If client has created multiple text input objects, compositor must send + this event to all of them. + + When the seat has the keyboard capability the text-input focus follows + the keyboard focus. This event sets the current surface for the + text-input object. + + + + + + + Notification that this seat's text-input focus is no longer on a + certain surface. The client should reset any preedit string previously + set. + + The leave notification clears the current surface. It is sent before + the enter notification for the new focus. After leave event, compositor + must ignore requests from any text input instances until next enter + event. + + When the seat has the keyboard capability the text-input focus follows + the keyboard focus. + + + + + + + + Instruct the compositor to re-process through the input method a series + of recent wl_keyboard.key events, starting from the given serial until + the wp_text_input_v3 is enabled. This request should only be honored in + the commit that does the wp_text_input_v3.enable request enabling input + method treatment. + + This request is useful for cases where wl_keyboard.key events result in + wp_text_input_v3.enable happening on the client. A typical case is + type-to-search UIs where the first characters introduced will trigger + both change focus to an input search and re-route the key event being + handled to it. In those situations it is desirable to have the already + sent key events be processed through the input method instead of + being handled without input method involvement. + + Compositors should keep a small buffer of the last key events, if the + requested serial is too old or does not exist in the buffer, compositors + are free to either ignore the request or reprocess the full buffer. + Compositors must replay full key press/release sequences to the input + method. + + Clients using this request must ignore the local effects of + wl_keyboard.key events after this request is issued, until the first + wp_text_input_v3.done event is received. The compositor may choose to + replay the wl_keyboard.key events after sending the done event. + + State set with this request is double-buffered. It will get applied on + the next wp_text_input_v3.commit request. + + + + + + + + + + + A possible action to perform on a text input. + + The backspace and delete actions should be handled in a similar manner + to backpace and delete keys being pressed on a keyboard. + + + + + + + + + + An action was performed on this text input. + + Values set with this event are double-buffered. They must be applied + and reset to initial on the next wp_text_input_v3.done event. + + The initial value of action is none. + + + + + + + + Set the actions available for this text input. + + Values set with this request are double-buffered. They will get applied + on the next wp_text_input_v3.commit request. + + If the available_actions array contains the none action, or contains the + same action multiple times, the compositor must raise the invalid_action + protocol error. + + Initially, no actions are available. + + + + + + + Notify the application of language used by the input method. + + This event will be sent on creation if known and for all subsequent changes. + + The language should be specified as an IETF BCP 47 tag. + Setting an empty string will reset any known language back to the default unknown state. + + + + + + + Pre-edit commit mode when the focus widget or the cursor position + is changed. + + + + + + + + Specify how the visible preedit should be handled + when switching the focus widget or changing the cursor position, + whether to commit the preedit text or clear the preedit text. + + This is usually used together with the preedit_string event. + + The commit behavior is the same for focus switch and + cursor position change. + + The parameter mode selects the desired behavior and + its value is one from the commit mode enum. + + + + + + + Style to apply to sections of the preedit string. + + + + + + + + + Underline style to apply to sections of the preedit string. + + + + + + + + + Color hints to identify sections of the preedit string. + They should be in accordance with the current color scheme. + + + + + + + + + Sets styling information on composing text. + Event sent without preedit string sets a default style for all future + preedit text. + + The parameters begin and end are counted in bytes relative to the + beginning of the text buffer submitted through + wp_text_input_v3.preedit_string. + + Multiple events may be submitted if the preedit string has different + sections. Compositors/input method must not send multiple + wp_text_input_v3.preedit_underline events with overlapping extents. + + Clients should pick colors appropriate for their color scheme, + underline colors follows text color. For parts of the preedit string + that are not covered by any wp_text_input_v3.preedit_hint event, + or if no events were sent, the text will be considered unstyled. + + Values set with this event are double-buffered. They must be applied + and reset on the next wp_text_input_v3.done event. + + + + + + + + + + + + A factory for text-input objects. This object is a global singleton. + + + + + Destroy the wp_text_input_manager object. + + + + + + Creates a new text-input object for a given seat. + + + + + + +