Struct DefineParameters 

pub struct DefineParameters;

Defines the program’s number parameters, each a target of its own (parameter): what the run’s input of its name sets it to, else what it is defined as. A formula may read any other parameter of the step, defined before it or after, and those the steps before defined — a table’s columns; one reading one that reads it back fails, saying so.

Trait Implementations

impl Clone for DefineParameters

fn clone(&self) -> DefineParameters

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for DefineParameters

impl Debug for DefineParameters

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for DefineParameters

fn default() -> DefineParameters

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for DefineParameters

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Editable for DefineParameters

const INFO: OperationInfo = <DefineParameters as ::geop_core_editor::part_operation::PartOperation>::INFO

type EditingState = FormState<<DefineParameters as PartOperation>::Session>

What the editor keeps about a step while it is edited, beyond its arguments, starting from the default whenever a step is opened.

fn new_args(context: &Context<'_>) -> Self::Args

The arguments of a new step: sensible defaults, taking the part it is inserted into into account.

fn presentation( context: &Context<'_>, args: &Self::Args, editing: &Self::EditingState, ) -> Form

What the editor shows while the step is edited. Never fails: an editor needs the form most exactly when the arguments do not build, so whatever is wrong is said in it.

fn process_user_event( context: &Context<'_>, args: &Self::Args, editing: &Self::EditingState, event: Event, ) -> (Self::Args, Self::EditingState)

The step’s arguments and editing state after event.

impl Operation for DefineParameters

const KIND: &'static str = <DefineParameters as ::geop_core_editor::part_operation::PartOperation>::KIND

The name programs store its steps under.

type Args = <DefineParameters as PartOperation>::Args

What a step of the operation is given. It is saved with the program, so it names targets and elements, never holds their internal ids.

fn run(ctx: &mut StepContext<'_>, args: &Self::Args) -> __GeopResult<()>

Declares what the step produces, through ctx (see StepContext::produce): cheap, since it runs in every run. What takes work is done in the makes, which run only when what they read changed.

impl PartOperation for DefineParameters

fn run(ctx: &mut StepContext<'_>, args: &DefineParametersArgs) -> GeopResult<()>

Each parameter, in an order in which a formula’s parameters come before it, and then the step’s entries of the part’s parameter values.

fn form<'a>( ctx: &'a Context<'a>, args: &DefineParametersArgs, _: &FormState<()>, ) -> EditForm<'a, DefineParametersArgs>

The parameters as a table, in a popup: a row each, of its name, its value — a number or a formula, and what it comes to in the part as the step built it — and what a slider offers, from and to. A row added is a fresh length of 10. A name typed here renames the definition alone: a formula still reading the old name fails, naming it, until it is changed too.

const KIND: &'static str = PARAMETERS

The name programs store its steps under.

const INFO: OperationInfo

type Args = DefineParametersArgs

What a step is given. It is saved with the program, so it names targets and elements, never holds their internal ids.

type Session = ()

What the editor keeps while a step is edited besides its arguments and the visuals selected: () for most.

fn new_args(_: &Context<'_>) -> DefineParametersArgs

The arguments of a new step: sensible defaults, taking the part it is inserted into into account.

fn begin_event(session: &mut Self::Session)

What the session forgets at the start of every event, before the event is handled: nothing, by default.

fn canvas( context: &Context<'_>, edit: Edit<'_, Self::Args, Self::Session>, event: &CanvasEvent, )

What the pointer or a key did on the canvas: nothing, by default.

impl PartialEq for DefineParameters

fn eq(&self, other: &DefineParameters) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for DefineParameters

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for DefineParameters