Enum Change

pub enum Change {
    Create {
        thing_data: ThingData,
        uuid: Option<Uuid>,
    },
    CreateAndSave {
        thing_data: ThingData,
        uuid: Option<Uuid>,
    },
    Delete {
        uuid: Uuid,
        name: String,
    },
    Edit {
        name: String,
        uuid: Option<Uuid>,
        diff: ThingData,
    },
    EditAndUnsave {
        uuid: Uuid,
        name: String,
        diff: ThingData,
    },
    Save {
        name: String,
        uuid: Option<Uuid>,
    },
    Unsave {
        uuid: Uuid,
        name: String,
    },
    SetKeyValue {
        key_value: KeyValue,
    },
}

Represents a modification to be applied to the Repository. This is passed to Repository::modify() to be applied. An object is used to represent the change because every operation has an opposite; for instance, Unsave is the opposite of Save, and Edit is the opposite of Edit. This opposite is inserted into the undo history and can be applied using Repository::undo().

Variants

Create

Create a new thing and store it in recent entries.

Reverse: Delete

Fields

thing_data: ThingData

uuid: Option<Uuid>

CreateAndSave

Create a new thing and store it in the journal.

Reverse: Delete

Fields

thing_data: ThingData

uuid: Option<Uuid>

Delete

Delete a thing from recent or journal.

Reverse: Create (recent) or CreateAndSave (journal)

Fields

uuid: Uuid

name: String

Edit

Edit fields on a Thing.

Reverse: Edit (already in journal) or EditAndUnsave (in recent)

Fields

name: String

uuid: Option<Uuid>

diff: ThingData

EditAndUnsave

Edit a Thing and move it from journal to recent. The reverse of edit with autosave.

Reverse: Edit

Fields

uuid: Uuid

name: String

diff: ThingData

Save

Transfer a thing from recent to journal.

Reverse: Unsave

Fields

name: String

uuid: Option<Uuid>

Unsave

Transfer a thing from journal to recent. Only triggerable as the reverse to Save.

Reverse: Save

Fields

uuid: Uuid

name: String

SetKeyValue

Set a value in the key-value store.

Reverse: SetKeyValue

Fields

key_value: KeyValue

Implementations

impl Change

pub fn display_undo(&self) -> DisplayUndo<'_>

Describe how applying this change from the undo queue will affect the application state (“undo change xyz”).

pub fn display_redo(&self) -> DisplayRedo<'_>

Describe how applyifrom the redo queue will affect the application state (“redo change xyz”).

Trait Implementations

impl Clone for Change

fn clone(&self) -> Change

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Change

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

Formats the value using the given formatter.

impl PartialEq for Change

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Change

impl StructuralPartialEq for Change