BlockSuite API Documentation / @blocksuite/virgo / VirgoDeltaService

Class: VirgoDeltaService<TextAttributes>

Contents

• Type parameters
• Constructors
  • new VirgoDeltaService(editor)
• Properties
  • editor
• Accessors
  • deltas
  • normalizedDeltas
• Methods
  • getDeltaByRangeIndex()
  • getDeltasByVRange()
  • isNormalizedDeltaSelected()
  • mapDeltasInVRange()
  • render()

Type parameters

• TextAttributes extends BaseTextAttributes

Constructors

new VirgoDeltaService(editor)

new VirgoDeltaService<TextAttributes>(editor): VirgoDeltaService<TextAttributes>

Parameters

• editor: VEditor<TextAttributes>

Returns

VirgoDeltaService<TextAttributes>

Source

packages/virgo/src/services/delta.ts:12

Properties

editor

readonly editor: VEditor<TextAttributes>

Source

packages/virgo/src/services/delta.ts:12

Accessors

deltas

get deltas(): DeltaInsert<TextAttributes>[]

Returns

DeltaInsert<TextAttributes>[]

Source

packages/virgo/src/services/delta.ts:14

---

normalizedDeltas

get normalizedDeltas(): DeltaInsert<TextAttributes>[]

Returns

DeltaInsert<TextAttributes>[]

Source

packages/virgo/src/services/delta.ts:18

Methods

getDeltaByRangeIndex()

getDeltaByRangeIndex(rangeIndex): null | DeltaInsert<TextAttributes>

Here are examples of how this function computes and gets the delta.

We have such a text:

[
  {
     insert: 'aaa',
     attributes: { bold: true },
  },
  {
     insert: 'bbb',
     attributes: { italic: true },
  },
]

getDeltaByRangeIndex(0) returns { insert: 'aaa', attributes: { bold: true } }.

getDeltaByRangeIndex(1) returns { insert: 'aaa', attributes: { bold: true } }.

getDeltaByRangeIndex(3) returns { insert: 'aaa', attributes: { bold: true } }.

getDeltaByRangeIndex(4) returns { insert: 'bbb', attributes: { italic: true } }.

Parameters

• rangeIndex: number

Returns

null | DeltaInsert<TextAttributes>

Source

packages/virgo/src/services/delta.ts:119

---

getDeltasByVRange()

getDeltasByVRange(vRange): DeltaEntry<TextAttributes>[]

Here are examples of how this function computes and gets the deltas.

We have such a text:

[
  {
     insert: 'aaa',
     attributes: { bold: true },
  },
  {
     insert: 'bbb',
     attributes: { italic: true },
  },
  {
     insert: 'ccc',
     attributes: { underline: true },
  },
]

getDeltasByVRange({ index: 0, length: 0 }) returns

[{ insert: 'aaa', attributes: { bold: true }, }, { index: 0, length: 3, }]]

getDeltasByVRange({ index: 0, length: 1 }) returns

[{ insert: 'aaa', attributes: { bold: true }, }, { index: 0, length: 3, }]]

getDeltasByVRange({ index: 0, length: 4 }) returns

[{ insert: 'aaa', attributes: { bold: true }, }, { index: 0, length: 3, }],
 [{ insert: 'bbb', attributes: { italic: true }, }, { index: 3, length: 3, }]]

getDeltasByVRange({ index: 3, length: 1 }) returns

[{ insert: 'aaa', attributes: { bold: true }, }, { index: 0, length: 3, }],
 [{ insert: 'bbb', attributes: { italic: true }, }, { index: 3, length: 3, }]]

getDeltasByVRange({ index: 3, length: 3 }) returns

[{ insert: 'aaa', attributes: { bold: true }, }, { index: 0, length: 3, }],
 [{ insert: 'bbb', attributes: { italic: true }, }, { index: 3, length: 3, }]]

getDeltasByVRange({ index: 3, length: 4 }) returns

[{ insert: 'aaa', attributes: { bold: true }, }, { index: 0, length: 3, }],
 [{ insert: 'bbb', attributes: { italic: true }, }, { index: 3, length: 3, }],
 [{ insert: 'ccc', attributes: { underline: true }, }, { index: 6, length: 3, }]]

Parameters

• vRange: VRange

Returns

DeltaEntry<TextAttributes>[]

Source

packages/virgo/src/services/delta.ts:189

---

isNormalizedDeltaSelected()

isNormalizedDeltaSelected(normalizedDeltaIndex, vRange): boolean

Parameters

• normalizedDeltaIndex: number

• vRange: VRange

Returns

boolean

Source

packages/virgo/src/services/delta.ts:70

---

mapDeltasInVRange()

mapDeltasInVRange<Result>(vRange, callback, normalize): Result[]

Type parameters

• Result

Parameters

• vRange: VRange

• callback: (delta, rangeIndex, deltaIndex) => Result

• normalize: boolean= false

Returns

Result[]

Source

packages/virgo/src/services/delta.ts:37

---

render()

render(syncVRange): Promise<void>

Parameters

• syncVRange: boolean= true

Returns

Promise<void>

Source

packages/virgo/src/services/delta.ts:200

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