#[repr(transparent)]pub struct MenuItem { /* private fields */ }
Expand description
MenuItem
is an opaque structure type. You must access it using the
functions below.
Implements
Implementations§
source§impl MenuItem
impl MenuItem
sourcepub fn new(label: Option<&str>, detailed_action: Option<&str>) -> MenuItem
pub fn new(label: Option<&str>, detailed_action: Option<&str>) -> MenuItem
Creates a new MenuItem
.
If label
is non-None
it is used to set the “label” attribute of the
new item.
If detailed_action
is non-None
it is used to set the “action” and
possibly the “target” attribute of the new item. See
set_detailed_action()
for more information.
label
the section label, or None
detailed_action
the detailed action string, or None
Returns
a new MenuItem
sourcepub fn from_model(model: &impl IsA<MenuModel>, item_index: i32) -> MenuItem
pub fn from_model(model: &impl IsA<MenuModel>, item_index: i32) -> MenuItem
Creates a MenuItem
as an exact copy of an existing menu item in a
MenuModel
.
item_index
must be valid (ie: be sure to call
MenuModelExt::n_items()
first).
model
item_index
the index of an item in model
Returns
a new MenuItem
.
sourcepub fn new_section(
label: Option<&str>,
section: &impl IsA<MenuModel>
) -> MenuItem
pub fn new_section( label: Option<&str>, section: &impl IsA<MenuModel> ) -> MenuItem
Creates a new MenuItem
representing a section.
This is a convenience API around new()
and
set_section()
.
The effect of having one menu appear as a section of another is
exactly as it sounds: the items from section
become a direct part of
the menu that menu_item
is added to.
Visual separation is typically displayed between two non-empty
sections. If label
is non-None
then it will be encorporated into
this visual indication. This allows for labeled subsections of a
menu.
As a simple example, consider a typical “Edit” menu from a simple program. It probably contains an “Undo” and “Redo” item, followed by a separator, followed by “Cut”, “Copy” and “Paste”.
This would be accomplished by creating three Menu
instances. The
first would be populated with the “Undo” and “Redo” items, and the
second with the “Cut”, “Copy” and “Paste” items. The first and
second menus would then be added as submenus of the third. In XML
format, this would look something like the following:
<menu id='edit-menu'>
<section>
<item label='Undo'/>
<item label='Redo'/>
</section>
<section>
<item label='Cut'/>
<item label='Copy'/>
<item label='Paste'/>
</section>
</menu>
The following example is exactly equivalent. It is more illustrative of the exact relationship between the menus and items (keeping in mind that the ‘link’ element defines a new menu that is linked to the containing one). The style of the second example is more verbose and difficult to read (and therefore not recommended except for the purpose of understanding what is really going on).
<menu id='edit-menu'>
<item>
<link name='section'>
<item label='Undo'/>
<item label='Redo'/>
</link>
</item>
<item>
<link name='section'>
<item label='Cut'/>
<item label='Copy'/>
<item label='Paste'/>
</link>
</item>
</menu>
label
the section label, or None
section
a MenuModel
with the items of the section
Returns
a new MenuItem
sourcepub fn attribute_value(
&self,
attribute: &str,
expected_type: Option<&VariantTy>
) -> Option<Variant>
pub fn attribute_value( &self, attribute: &str, expected_type: Option<&VariantTy> ) -> Option<Variant>
Queries the named attribute
on self
.
If expected_type
is specified and the attribute does not have this
type, None
is returned. None
is also returned if the attribute
simply does not exist.
attribute
the attribute name to query
expected_type
the expected type of the attribute
Returns
the attribute value, or None
sourcepub fn set_action_and_target_value(
&self,
action: Option<&str>,
target_value: Option<&Variant>
)
pub fn set_action_and_target_value( &self, action: Option<&str>, target_value: Option<&Variant> )
Sets or unsets the “action” and “target” attributes of self
.
If action
is None
then both the “action” and “target” attributes
are unset (and target_value
is ignored).
If action
is non-None
then the “action” attribute is set. The
“target” attribute is then set to the value of target_value
if it is
non-None
or unset otherwise.
Normal menu items (ie: not submenu, section or other custom item
types) are expected to have the “action” attribute set to identify
the action that they are associated with. The state type of the
action help to determine the disposition of the menu item. See
Action
and ActionGroup
for an overview of actions.
In general, clicking on the menu item will result in activation of the named action with the “target” attribute given as the parameter to the action invocation. If the “target” attribute is not set then the action is invoked with no parameter.
If the action has no state then the menu item is usually drawn as a plain menu item (ie: with no additional decoration).
If the action has a boolean state then the menu item is usually drawn
as a toggle menu item (ie: with a checkmark or equivalent
indication). The item should be marked as ‘toggled’ or ‘checked’
when the boolean state is true
.
If the action has a string state then the menu item is usually drawn
as a radio menu item (ie: with a radio bullet or equivalent
indication). The item should be marked as ‘selected’ when the string
state is equal to the value of the target
property.
See g_menu_item_set_action_and_target()
or
set_detailed_action()
for two equivalent calls that are
probably more convenient for most uses.
action
the name of the action for this item
target_value
a glib::Variant
to use as the action target
sourcepub fn set_attribute_value(&self, attribute: &str, value: Option<&Variant>)
pub fn set_attribute_value(&self, attribute: &str, value: Option<&Variant>)
Sets or unsets an attribute on self
.
The attribute to set or unset is specified by attribute
. This
can be one of the standard attribute names MENU_ATTRIBUTE_LABEL
,
MENU_ATTRIBUTE_ACTION
, MENU_ATTRIBUTE_TARGET
, or a custom
attribute name.
Attribute names are restricted to lowercase characters, numbers
and ‘-’. Furthermore, the names must begin with a lowercase character,
must not end with a ‘-’, and must not contain consecutive dashes.
must consist only of lowercase ASCII characters, digits and ‘-’.
If value
is non-None
then it is used as the new value for the
attribute. If value
is None
then the attribute is unset. If
the value
glib::Variant
is floating, it is consumed.
See also g_menu_item_set_attribute()
for a more convenient way to do
the same.
attribute
the attribute to set
value
a glib::Variant
to use as the value, or None
sourcepub fn set_detailed_action(&self, detailed_action: &str)
pub fn set_detailed_action(&self, detailed_action: &str)
Sets the “action” and possibly the “target” attribute of self
.
The format of detailed_action
is the same format parsed by
Action::parse_detailed_name()
.
See g_menu_item_set_action_and_target()
or
set_action_and_target_value()
for more flexible (but
slightly less convenient) alternatives.
See also set_action_and_target_value()
for a description of
the semantics of the action and target attributes.
detailed_action
the “detailed” action string
sourcepub fn set_icon(&self, icon: &impl IsA<Icon>)
pub fn set_icon(&self, icon: &impl IsA<Icon>)
Sets (or unsets) the icon on self
.
This call is the same as calling IconExt::serialize()
and using the
result as the value to set_attribute_value()
for
MENU_ATTRIBUTE_ICON
.
This API is only intended for use with “noun” menu items; things like bookmarks or applications in an “Open With” menu. Don’t use it on menu items corresponding to verbs (eg: stock icons for ‘Save’ or ‘Quit’).
If icon
is None
then the icon is unset.
icon
sourcepub fn set_link(&self, link: &str, model: Option<&impl IsA<MenuModel>>)
pub fn set_link(&self, link: &str, model: Option<&impl IsA<MenuModel>>)
Creates a link from self
to model
if non-None
, or unsets it.
Links are used to establish a relationship between a particular menu
item and another menu. For example, MENU_LINK_SUBMENU
is used to
associate a submenu with a particular menu item, and MENU_LINK_SECTION
is used to create a section. Other types of link can be used, but there
is no guarantee that clients will be able to make sense of them.
Link types are restricted to lowercase characters, numbers
and ‘-’. Furthermore, the names must begin with a lowercase character,
must not end with a ‘-’, and must not contain consecutive dashes.
link
type of link to establish or unset
model
sourcepub fn set_section(&self, section: Option<&impl IsA<MenuModel>>)
pub fn set_section(&self, section: Option<&impl IsA<MenuModel>>)
Sets or unsets the “section” link of self
to section
.
The effect of having one menu appear as a section of another is
exactly as it sounds: the items from section
become a direct part of
the menu that self
is added to. See new_section()
for more information about what it means for a menu item to be a
section.
section
Trait Implementations§
source§impl HasParamSpec for MenuItem
impl HasParamSpec for MenuItem
source§impl Ord for MenuItem
impl Ord for MenuItem
source§impl<OT: ObjectType> PartialEq<OT> for MenuItem
impl<OT: ObjectType> PartialEq<OT> for MenuItem
source§impl<OT: ObjectType> PartialOrd<OT> for MenuItem
impl<OT: ObjectType> PartialOrd<OT> for MenuItem
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read moresource§impl StaticType for MenuItem
impl StaticType for MenuItem
source§fn static_type() -> Type
fn static_type() -> Type
Self
.impl Eq for MenuItem
Auto Trait Implementations§
impl RefUnwindSafe for MenuItem
impl !Send for MenuItem
impl !Sync for MenuItem
impl Unpin for MenuItem
impl UnwindSafe for MenuItem
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closure: RustClosure
) -> SignalHandlerId
fn connect_closure( &self, signal_name: &str, after: bool, closure: RustClosure ) -> SignalHandlerId
signal_name
on this object. Read moresource§fn connect_closure_id(
&self,
signal_id: SignalId,
details: Option<Quark>,
after: bool,
closure: RustClosure
) -> SignalHandlerId
fn connect_closure_id( &self, signal_id: SignalId, details: Option<Quark>, after: bool, closure: RustClosure ) -> SignalHandlerId
signal_id
on this object. Read moresource§fn watch_closure(&self, closure: &impl AsRef<Closure>)
fn watch_closure(&self, closure: &impl AsRef<Closure>)
closure
to the lifetime of the object. When
the object’s reference count drops to zero, the closure will be
invalidated. An invalidated closure will ignore any calls to
invoke_with_values
, or
invoke
when using Rust closures.source§fn emit<R>(&self, signal_id: SignalId, args: &[&dyn ToValue]) -> Rwhere
R: TryFromClosureReturnValue,
fn emit<R>(&self, signal_id: SignalId, args: &[&dyn ToValue]) -> Rwhere R: TryFromClosureReturnValue,
source§fn emit_with_values(&self, signal_id: SignalId, args: &[Value]) -> Option<Value>
fn emit_with_values(&self, signal_id: SignalId, args: &[Value]) -> Option<Value>
Self::emit
but takes Value
for the arguments.source§fn emit_by_name<R>(&self, signal_name: &str, args: &[&dyn ToValue]) -> Rwhere
R: TryFromClosureReturnValue,
fn emit_by_name<R>(&self, signal_name: &str, args: &[&dyn ToValue]) -> Rwhere R: TryFromClosureReturnValue,
source§fn emit_by_name_with_values(
&self,
signal_name: &str,
args: &[Value]
) -> Option<Value>
fn emit_by_name_with_values( &self, signal_name: &str, args: &[Value] ) -> Option<Value>
source§fn emit_by_name_with_details<R>(
&self,
signal_name: &str,
details: Quark,
args: &[&dyn ToValue]
) -> Rwhere
R: TryFromClosureReturnValue,
fn emit_by_name_with_details<R>( &self, signal_name: &str, details: Quark, args: &[&dyn ToValue] ) -> Rwhere R: TryFromClosureReturnValue,
source§fn emit_by_name_with_details_and_values(
&self,
signal_name: &str,
details: Quark,
args: &[Value]
) -> Option<Value>
fn emit_by_name_with_details_and_values( &self, signal_name: &str, details: Quark, args: &[Value] ) -> Option<Value>
source§fn emit_with_details<R>(
&self,
signal_id: SignalId,
details: Quark,
args: &[&dyn ToValue]
) -> Rwhere
R: TryFromClosureReturnValue,
fn emit_with_details<R>( &self, signal_id: SignalId, details: Quark, args: &[&dyn ToValue] ) -> Rwhere R: TryFromClosureReturnValue,
source§fn emit_with_details_and_values(
&self,
signal_id: SignalId,
details: Quark,
args: &[Value]
) -> Option<Value>
fn emit_with_details_and_values( &self, signal_id: SignalId, details: Quark, args: &[Value] ) -> Option<Value>
source§fn disconnect(&self, handler_id: SignalHandlerId)
fn disconnect(&self, handler_id: SignalHandlerId)
source§fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerIdwhere
F: Fn(&T, &ParamSpec) + Send + Sync + 'static,
fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerIdwhere F: Fn(&T, &ParamSpec) + Send + Sync + 'static,
notify
signal of the object. Read moresource§fn connect_notify_local<F>(&self, name: Option<&str>, f: F) -> SignalHandlerIdwhere
F: Fn(&T, &ParamSpec) + 'static,
fn connect_notify_local<F>(&self, name: Option<&str>, f: F) -> SignalHandlerIdwhere F: Fn(&T, &ParamSpec) + 'static,
notify
signal of the object. Read moresource§unsafe fn connect_notify_unsafe<F>(
&self,
name: Option<&str>,
f: F
) -> SignalHandlerIdwhere
F: Fn(&T, &ParamSpec),
unsafe fn connect_notify_unsafe<F>( &self, name: Option<&str>, f: F ) -> SignalHandlerIdwhere F: Fn(&T, &ParamSpec),
notify
signal of the object. Read more