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@@ -89,9 +89,8 @@ export default class History {
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}
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let transformed = [ delta ];
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- const historyDeltas = this.getDeltas( delta.baseVersion );
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- for ( let historyDelta of historyDeltas ) {
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+ for ( let historyDelta of this.getDeltas( delta.baseVersion ) ) {
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let allResults = [];
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for ( let deltaToTransform of transformed ) {
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@@ -109,21 +108,18 @@ export default class History {
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* Returns all deltas from history, starting from given history point (if passed).
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*
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* @param {Number} from History point.
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+ * @returns {Iterator.<engine.treeModel.delta.Delta>} Deltas from given history point to the end of history.
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*/
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- getDeltas( from = 0 ) {
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+ *getDeltas( from = 0 ) {
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let i = this._historyPoints.get( from );
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if ( i === undefined ) {
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throw new CKEditorError( 'history-wrong-version: Cannot retrieve given point in the history.' );
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}
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- const result = [];
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-
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for ( ; i < this._deltas.length; i++ ) {
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- result.push( this._deltas[ i ] );
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+ yield this._deltas[ i ];
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}
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-
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- return result;
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}
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/**
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@@ -132,6 +128,7 @@ export default class History {
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* @protected
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* @param {engine.treeModel.delta.Delta} toTransform Delta to be transformed.
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* @param {engine.treeModel.delta.Delta} transformBy Delta to transform by.
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+ * @returns {Array.<engine.treeModel.delta.Delta>} Result of the transformation.
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*/
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static _transform( toTransform, transformBy ) {
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return transform( toTransform, transformBy, false );
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