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WIP: Added wlr-workspace-unstable-v1.xml #35

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<?xml version="1.0" encoding="UTF-8"?>
<protocol name="wlr_workspace_unstable_v1">
<copyright>
Copyright © 2018 Christopher Billington

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.
</copyright>

<interface name="zwlr_workspace_manager_v1" version="1">
<description summary="list and control workspaces">

Workspaces, also called virtual desktops, are groups of surfaces. A compositor
with a concept of workspaces may only show one such group of windows (those of the
'active' workspace) at a time. Outputs may be grouped together, such that all
outputs share workspaces, or a group of outputs (possibly a single output) may
have its own set of workspaces, separate from other outputs. The purpose of this
protocol is to enable the creation of taskbars and docks by providing them with a
list of workspaces for each group of outputs, and allowing them to set the active
workspace on each workspace group corresponding to a set of outputs.

After a client binds the zwlr_workspace_manager_v1, each workspace group
will be sent via the output_group event
</description>

<event name="workspace_group">
<description summary="a workspace group has been created">
This event is emitted whenever a new workspace group has been created.

All initial details of the workspace_group (workspaces, outputs) will be sent
immediately after this event via the corresponding events in
zwlr_workspace_group_handle_v1.
</description>
<arg name="workspace_group" type="new_id" interface="zwlr_workspace_group_handle_v1"/>
</event>

<event name="finished">
<description summary="the compositor has finished with the workspace_manager">
This event indicates that the compositor is done sending events to the
zwlr_workspace_manager_v1. The server will destroy the object immediately after
sending this request, so it will become invalid and the client should free any
resources associated with it.
</description>
</event>

<request name="stop">
<description summary="stop sending events">
Indicates the client no longer wishes to receive events for new workspace
groups. However the compositor may emit further workspace_group events, until
the finished event is emitted.

The client must not send any more requests after this one.
</description>
</request>
</interface>

<interface name="zwlr_workspace_group_handle_v1" version="1">
<description summary="a set of workspaces for a set of outputs">
A zwlr_workspace_group_handle_v1 object represents a set of workspaces shared
by a set of outputs. Each output may belong to only one workspace group.

Each workspace group has a list of outputs, conveyed to the client with the
output and output_remove events; and a list of workspaces, conveyed to the client
with workspace and workspace_remove events.
</description>

<event name="output">
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<description summary="output added to group">
This event is emitted whenever an output is added to the workspace group.
</description>
<arg name="output" type="object" interface="wl_output"/>
</event>

<event name="output_remove">
<description summary="output removed from group">
This event is emitted whenever an output is removed from the workspace group.
</description>
<arg name="output" type="object" interface="wl_output"/>
</event>

<event name="workspace">
<description summary="workspace added to group">
This event is emitted whenever a workspace is added to the workspace group.

All initial details of the workspace (number, state) will be sent immediately
after this event via the corresponding events in zwlr_workspace_handle_v1.
</description>
<arg name="workspace" type="new_id" interface="zwlr_workspace_handle_v1"/>
</event>

<event name="workspace_remove">
<description summary="workspace removed from group">
This event is emitted whenever a workspace is removed from the workspace group
</description>
<arg name="workspace" type="object" interface="zwlr_workspace_handle_v1"/>
</event>

<event name="done">
<description summary="all information about the workspace group has been sent">
This event is sent after all changes in the workspace group state have been
sent.

This allows changes to one or more zwlr_workspace_group_handle_v1 properties to
be seen as atomic, even if they happen via multiple events. In particular, an
output moving from one workspace group to another sends an output event and an
output_remove event to the two zwlr_workspace_group_handle_v1 objects in
question. The compositor sends both done events only after both other events.
</description>
</event>

<event name="destroyed">
<description summary="this workspace group has been destroyed">
This event means the zwlr_workspace_group_handle_v1 has been destroyed. It is
guaranteed there won't be any more events for this
zwlr_workspace_group_handle_v1. The zwlr_workspace_group_handle_v1 becomes inert
so any requests will be ignored except the destroy request.
</description>
</event>

<request name="destroy" type="destructor">
<description summary="destroy the zwlr_workspace_group_handle_v1 object">
Destroys the zwlr_workspace_group_handle_v1 object.

This request should be called either when the client does not want to use the
workspace_group anymore or after the closed event to finalize the destruction of
the object.
</description>
</request>
</interface>

<interface name="zwlr_workspace_handle_v1" version="1">
<description summary="a workspace belonging to a workspace group">
A zwlr_workspace_handle_v1 object represents a a workspace belonging to a
workspace group.

Each workspace group has a number, conveyed to the client with the number event,
and a list of states, conveyed to the client with the state event. The client may
request the compositor to activate the workspace.
</description>

<event name="number">
<description summary="workspace number changed">
This event is emitted immediately after the zwlr_workspace_handle_v1 is created
and whenever the number of the workspace changed. Workspaces within a workspace
group are uniquely and contiguously numbered starting from zero.
</description>
<arg name="number" type="int"/>
</event>
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This does not define the dimensionality, be it 1D, 2D, etc. We need a second argument for that.

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I considered the length of the array to be the dimensionality. Is that insufficient? (or non-obvious enough that I should mention it explicitly)?

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It should be fine, xdg-shell already does the same.


<event name="state">
<description summary="the state of the workspace changed">
This event is emitted immediately after the zwlr_workspace_handle_v1 is created
and each time the workspace state changes, either because of a compositor action
or because of a request in this protocol.
</description>
<arg name="state" type="array"/>
</event>
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<enum name="state">
<description summary="types of states on the workspace">
The different states that a workspace can have.
</description>

<entry name="active" value="0" summary="the workspace is active"/>
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How about add urgent state as it was mentioned in issue. For purpose not search urgent toplevels and not bound pure workspace module with taskbar.

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So, active state means "available" and "visible" workspace, doesn't it?
In this case I think we need something like current state and only for one workspace in group.

<entry name="empty" value="1" summary="the workspace contains no toplevels"/>
</enum>

<event name="done">
<description summary="all information about the workspace has been sent">
This event is sent after all changes in the workspace state have been sent.

This allows changes to one or more zwlr_workspace_handle_v1 properties to be
seen as atomic, even if they happen via multiple events. In particular, a
workspace changing its number sends number events to multiple
zwlr_workspace_handle_v1 objects in order to keep their numbers sequential. The
compositor sends both done events only after both number events have been sent.
</description>
</event>

<event name="destroyed">
<description summary="this workspace has been destroyed">
This event means the zwlr_workspace_handle_v1 has been destroyed. It is
guaranteed there won't be any more events for this zwlr_workspace_handle_v1. The
zwlr_workspace_handle_v1 becomes inert so any requests will be ignored except
the destroy request.
</description>
</event>

<request name="destroy" type="destructor">
<description summary="destroy the zwlr_workspace_group_handle_v1 object">
Destroys the zwlr_workspace_handle_v1 object.

This request should be called either when the client does not want to use the
workspace_group anymore or after the closed event to finalize the destruction of
the object.
</description>
</request>

<request name="activate">
<description summary="activate the workspace">
Request that this workspace be set as the active workspace for its workspace
group.

There is no guarantee the workspace will be actually activated.
</description>
</request>
</interface>
</protocol>