UndoOp

rat_widget::text::undo_buffer

Enum UndoOp 

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#[non_exhaustive]
pub enum UndoOp {
    InsertChar {
        bytes: Range<usize>,
        cursor: TextPositionChange,
        anchor: TextPositionChange,
        txt: String,
    },
    InsertStr {
        bytes: Range<usize>,
        cursor: TextPositionChange,
        anchor: TextPositionChange,
        txt: String,
    },
    RemoveChar {
        bytes: Range<usize>,
        cursor: TextPositionChange,
        anchor: TextPositionChange,
        txt: String,
        styles: Vec<StyleChange>,
    },
    RemoveStr {
        bytes: Range<usize>,
        cursor: TextPositionChange,
        anchor: TextPositionChange,
        txt: String,
        styles: Vec<StyleChange>,
    },
    Cursor {
        cursor: TextPositionChange,
        anchor: TextPositionChange,
    },
    SetStyles {
        styles_before: Vec<(Range<usize>, usize)>,
        styles_after: Vec<(Range<usize>, usize)>,
    },
    SetText {
        txt: String,
    },
    Undo,
    Redo,
}
Expand description

Storage for undo.

Variants (Non-exhaustive)§

This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
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InsertChar

Insert a single char/grapheme.

This can contain a longer text, if consecutive InsertChar have been merged.

Fields

§bytes: Range<usize>

byte range for the insert.

§cursor: TextPositionChange

cursor position change

§anchor: TextPositionChange

anchor position change

§txt: String

inserted text

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InsertStr

Insert a longer text.

Fields

§bytes: Range<usize>

byte range for the insert.

§cursor: TextPositionChange

cursor position change

§anchor: TextPositionChange

anchor position change

§txt: String

inserted text

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RemoveChar

Remove a single char/grapheme range.

This can be a longer range, if consecutive RemoveChar have been merged.

styles contains only styles whose range intersects the removed range. Styles that lie after the bytes-range will be shifted left.

Fields

§bytes: Range<usize>

byte range for the remove.

§cursor: TextPositionChange

cursor position change

§anchor: TextPositionChange

anchor position change

§txt: String

removed text

§styles: Vec<StyleChange>

removed styles

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RemoveStr

Remove longer text range.

styles contains only styles whose range intersects the removed range. Styles that lie after the bytes-range will be shifted left.

Fields

§bytes: Range<usize>

byte range for the remove.

§cursor: TextPositionChange

cursor position change

§anchor: TextPositionChange

anchor position change

§txt: String

removed text

§styles: Vec<StyleChange>

removed styles

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Cursor

Cursor/anchor changed.

This will be merged with a cursor-change immediately before. And it will merge with both removes and inserts.

Fields

§cursor: TextPositionChange

cursor position change

§anchor: TextPositionChange

anchor position change

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SetStyles

Set of styles was replaced.

Fields

§styles_before: Vec<(Range<usize>, usize)>

old styles

§styles_after: Vec<(Range<usize>, usize)>

new styles

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SetText

For replay only. Complete content was replaced.

Fields

§txt: String

New text

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Undo

For replay only. Undo one operation.

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Redo

For replay only. Redo one operation.

Trait Implementations§

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impl Clone for UndoOp

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fn clone(&self) -> UndoOp

Returns a duplicate of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for UndoOp

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl Freeze for UndoOp

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impl RefUnwindSafe for UndoOp

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impl Send for UndoOp

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impl Sync for UndoOp

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impl Unpin for UndoOp

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impl UnwindSafe for UndoOp

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> DynClone for T
where T: Clone,

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fn __clone_box(&self, _: Private) -> *mut ()

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.