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<?xml version="1.0" encoding="UTF-8"?>
<!--
A library to allow applications to provide simple indications of
information to be displayed to users of the application through the
interface shell.

Copyright 2009 Canonical Ltd.

Authors:
    Ted Gould <ted@canonical.com>
    Aurélien Gâteau <aurelien.gateau@canonical.com>

This program is free software: you can redistribute it and/or modify it 
under the terms of either or both of the following licenses:

1) the GNU Lesser General Public License version 3, as published by the 
Free Software Foundation; and/or
2) the GNU Lesser General Public License version 2.1, as published by 
the Free Software Foundation.

This program is distributed in the hope that it will be useful, but 
WITHOUT ANY WARRANTY; without even the implied warranties of 
MERCHANTABILITY, SATISFACTORY QUALITY or FITNESS FOR A PARTICULAR 
PURPOSE.  See the applicable version of the GNU Lesser General Public 
License for more details.

You should have received a copy of both the GNU Lesser General Public 
License version 3 and version 2.1 along with this program.  If not, see 
<http://www.gnu.org/licenses/>
-->
<node name="/" xmlns:dox="http://www.canonical.com/dbus/dox.dtd">
    <dox:d><![CDATA[
    @mainpage

    The goal of DBusMenu is to expose menus on DBus.
    
    Main interface is documented here: @ref com::canonical::dbusmenu
    ]]></dox:d>
	<interface name="com.canonical.dbusmenu">
		<dox:d><![CDATA[
		A DBus interface to expose menus on DBus.

		Menu items are represented with a unique numeric id and a dictionary of
		properties.

		To reduce the amount of DBus traffic, a property should only be returned
		if its value is not the default value.

		Available properties are:

		<table>
		<tr>
			<th>Name</th>
			<th>Type</th>
			<th>Description</th>
			<th>Default Value</th>
		</tr>
		<tr>
			<td>type</td>
			<td>String</td>
			<td>Can be one of:
			- "standard": an item which can be clicked to trigger an action or
			  show another menu
			- "separator": a separator

			Vendor specific types can be added by prefixing them with
			"x-<vendor>-".
			</td>
			<td>"standard"</td>
		</tr>
		<tr>
			<td>label</td>
			<td>string</td>
			<td>Text of the item, except that:
			-# two consecutive underscore characters "__" are displayed as a
			single underscore,
			-# any remaining underscore characters are not displayed at all,
			-# the first of those remaining underscore characters (unless it is
			the last character in the string) indicates that the following
			character is the access key.
			</td>
			<td>""</td>
		</tr>
		<tr>
			<td>enabled</td>
			<td>boolean</td>
			<td>Whether the item can be activated or not.</td>
			<td>true</td>
		</tr>
		<tr>
			<td>visible</td>
			<td>boolean</td>
			<td>True if the item is visible in the menu.</td>
			<td>true</td>
		</tr>
		<tr>
			<td>icon-name</td>
			<td>string</td>
			<td>Icon name of the item, following the freedesktop.org icon spec.</td>
			<td>""</td>
		</tr>
		<tr>
			<td>icon-data</td>
			<td>binary</td>
			<td>PNG data of the icon.</td>
			<td>Empty</td>
		</tr>
		<tr>
			<td>shortcut</td>
			<td>array of arrays of strings</td>
			<td>The shortcut of the item. Each array represents the key press
			in the list of keypresses. Each list of strings contains a list of
			modifiers and then the key that is used. The modifier strings
			allowed are: "Control", "Alt", "Shift" and "Super".

			- A simple shortcut like Ctrl+S is represented as:
			  [["Control", "S"]]
			- A complex shortcut like Ctrl+Q, Alt+X is represented as:
			  [["Control", "Q"], ["Alt", "X"]]</td>
			<td>Empty</td>
		</tr>
		<tr>
			<td>toggle-type</td>
			<td>string</td>
			<td>
			If the item can be toggled, this property should be set to:
			- "checkmark": Item is an independent togglable item
			- "radio": Item is part of a group where only one item can be
			  toggled at a time
			- "": Item cannot be toggled
			</td>
			<td>""</td>
		</tr>
		<tr>
			<td>toggle-state</td>
			<td>int</td>
			<td>
			Describe the current state of a "togglable" item. Can be one of:
			- 0 = off
			- 1 = on
			- anything else = indeterminate

			Note:
			The implementation does not itself handle ensuring that only one
			item in a radio group is set to "on", or that a group does not have
			"on" and "indeterminate" items simultaneously; maintaining this
			policy is up to the toolkit wrappers.
			</td>
			<td>-1</td>
		</tr>
		<tr>
			<td>children-display</td>
			<td>string</td>
			<td>
			If the menu item has children this property should be set to
			"submenu".
			</td>
			<td>""</td>
		</tr>
		</table>

		Vendor specific properties can be added by prefixing them with
		"x-<vendor>-".
		]]></dox:d>

<!-- Properties -->
		<property name="version" type="u" access="read">
			<dox:d>
			Provides the version of the DBusmenu API that this API is
			implementing.
			</dox:d>
		</property>

<!-- Functions -->

		<method name="GetLayout">
			<dox:d>
			  Provides the layout and propertiers that are attached to the entries
			  that are in the layout.  It only gives the items that are children
			  of the item that is specified in @parentId.  It will return all of the
			  properties or specific ones depending of the value in @propertyNames.

			  The format is recursive, where the second 'v' is in the same format
			  as the original 'a(ia(sv)a(v))'.  If the @recursive flag is set to
			  less than one then the second array will have zero entries.
			</dox:d>
			<arg type="i" name="parentId" direction="in">
				<dox:d>The ID of the parent node for the layout.  For
				grabbing the layout from the root node use zero.</dox:d>
			</arg>
			<arg type="i" name="recurse" direction="in">
				<dox:d>
				  The amount of levels of recursion to use.  -1, as value would
				  deliver all the items under the @parentId.
				</dox:d>
			</arg>
			<arg type="as" name="propertyNames" direction="in" >
				<dox:d>
					The list of item properties we are
					interested in.  If there are no entries in the list all of
					the properties will be sent.
				</dox:d>
			</arg>
			<arg type="u" name="revision" direction="out">
				<dox:d>The revision number of the layout.  For matching
				with layoutUpdated signals.</dox:d>
			</arg>
			<arg type="(ia{sv}av)" name="layout" direction="out">
				<dox:d>The layout as an XML string of IDs.</dox:d>
			</arg>
		</method>

		<method name="GetGroupProperties">
			<annotation name="com.trolltech.QtDBus.QtTypeName.In0" value="QVariantList"/>
			<annotation name="com.trolltech.QtDBus.QtTypeName.Out0" value="DBusMenuItemList"/>
			<dox:d>
			Returns the list of items which are children of @a parentId.
			</dox:d>
			<arg type="ai" name="ids" direction="in" >
				<dox:d>
					A list of ids that we should be finding the properties
					on.  If the list is empty, all menu items should be sent.
				</dox:d>
			</arg>
			<arg type="as" name="propertyNames" direction="in" >
				<dox:d>
					The list of item properties we are
					interested in.  If there are no entries in the list all of
					the properties will be sent.
				</dox:d>
			</arg>
			<arg type="a(ia{sv})" name="properties" direction="out" >
				<dox:d>
					An array of property values.
					An item in this area is represented as a struct following
					this format:
					@li id unsigned the item id
					@li properties map(string => variant) the requested item properties
				</dox:d>
			</arg>
		</method>

		<method name="GetProperty">
			<dox:d>
			  Get a signal property on a single item.  This is not useful if you're
			  going to implement this interface, it should only be used if you're
			  debugging via a commandline tool.
			</dox:d>
			<arg type="i" name="id" direction="in">
				<dox:d>the id of the item which received the event</dox:d>
			</arg>
			<arg type="s" name="name" direction="in">
				<dox:d>the name of the property to get</dox:d>
			</arg>
			<arg type="v" name="value" direction="out">
				<dox:d>the value of the property</dox:d>
			</arg>
		</method>

		<method name="Event">
			<dox:d><![CDATA[
			This is called by the applet to notify the application an event happened on a
			menu item.

			@a type can be one of the following:

			@li "clicked"
			@li "hovered"

			Vendor specific events can be added by prefixing them with "x-<vendor>-"
			]]></dox:d>
			<arg type="i" name="id" direction="in" >
				<dox:d>the id of the item which received the event</dox:d>
			</arg>
			<arg type="s" name="eventId" direction="in" >
				<dox:d>the type of event</dox:d>
			</arg>
			<arg type="v" name="data" direction="in" >
				<dox:d>event-specific data</dox:d>
			</arg>
			<arg type="u" name="timestamp" direction="in" >
				<dox:d>The time that the event occured if available or the time the message was sent if not</dox:d>
			</arg>
		</method>

		<method name="AboutToShow">
			<dox:d>
			This is called by the applet to notify the application that it is about
			to show the menu under the specified item.
			</dox:d>
			<arg type="i" name="id" direction="in">
				<dox:d>
				Which menu item represents the parent of the item about to be shown.
				</dox:d>
			</arg>
			<arg type="b" name="needUpdate" direction="out">
				<dox:d>
				Whether this AboutToShow event should result in the menu being updated.
				</dox:d>
			</arg>
		</method>

<!-- Signals -->
		<signal name="ItemsPropertiesUpdated">
			<dox:d>
			Triggered when there are lots of property updates across many items
			so they all get grouped into a single dbus message.  The format is
			the ID of the item with a hashtable of names and values for those
			properties.
			</dox:d>
			<arg type="a(ia(sv))" name="props" direction="out" />
			<arg type="a(ia(s))"  name="props_removed" direction="out" />
		</signal>
		<signal name="LayoutUpdated">
			<dox:d>
			Triggered by the application to notify display of a layout update, up to
			revision
			</dox:d>
			<arg type="u" name="revision" direction="out" >
				<dox:d>The revision of the layout that we're currently on</dox:d>
			</arg>
			<arg type="i" name="parent" direction="out" >
				<dox:d>
				If the layout update is only of a subtree, this is the
				parent item for the entries that have changed.  It is zero if
				the whole layout should be considered invalid.
				</dox:d>
			</arg>
		</signal>
		<signal name="ItemActivationRequested">
			<dox:d>
			  The server is requesting that all clients displaying this
			  menu open it to the user.  This would be for things like
			  hotkeys that when the user presses them the menu should
			  open and display itself to the user.
			</dox:d>
			<arg type="i" name="id" direction="out" >
				<dox:d>ID of the menu that should be activated</dox:d>
			</arg>
			<arg type="u" name="timestamp" direction="out" >
				<dox:d>The time that the event occured</dox:d>
			</arg>
		</signal>

<!-- End of interesting stuff -->

	</interface>
</node>