monaco-editor-core
Version:
A browser based code editor
63 lines (62 loc) • 4.48 kB
JavaScript
/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
import { Range } from '../../../common/core/range.js';
import { Selection } from '../../../common/core/selection.js';
export class DragAndDropCommand {
constructor(selection, targetPosition, copy) {
this.selection = selection;
this.targetPosition = targetPosition;
this.copy = copy;
this.targetSelection = null;
}
getEditOperations(model, builder) {
const text = model.getValueInRange(this.selection);
if (!this.copy) {
builder.addEditOperation(this.selection, null);
}
builder.addEditOperation(new Range(this.targetPosition.lineNumber, this.targetPosition.column, this.targetPosition.lineNumber, this.targetPosition.column), text);
if (this.selection.containsPosition(this.targetPosition) && !(this.copy && (this.selection.getEndPosition().equals(this.targetPosition) || this.selection.getStartPosition().equals(this.targetPosition)) // we allow users to paste content beside the selection
)) {
this.targetSelection = this.selection;
return;
}
if (this.copy) {
this.targetSelection = new Selection(this.targetPosition.lineNumber, this.targetPosition.column, this.selection.endLineNumber - this.selection.startLineNumber + this.targetPosition.lineNumber, this.selection.startLineNumber === this.selection.endLineNumber ?
this.targetPosition.column + this.selection.endColumn - this.selection.startColumn :
this.selection.endColumn);
return;
}
if (this.targetPosition.lineNumber > this.selection.endLineNumber) {
// Drag the selection downwards
this.targetSelection = new Selection(this.targetPosition.lineNumber - this.selection.endLineNumber + this.selection.startLineNumber, this.targetPosition.column, this.targetPosition.lineNumber, this.selection.startLineNumber === this.selection.endLineNumber ?
this.targetPosition.column + this.selection.endColumn - this.selection.startColumn :
this.selection.endColumn);
return;
}
if (this.targetPosition.lineNumber < this.selection.endLineNumber) {
// Drag the selection upwards
this.targetSelection = new Selection(this.targetPosition.lineNumber, this.targetPosition.column, this.targetPosition.lineNumber + this.selection.endLineNumber - this.selection.startLineNumber, this.selection.startLineNumber === this.selection.endLineNumber ?
this.targetPosition.column + this.selection.endColumn - this.selection.startColumn :
this.selection.endColumn);
return;
}
// The target position is at the same line as the selection's end position.
if (this.selection.endColumn <= this.targetPosition.column) {
// The target position is after the selection's end position
this.targetSelection = new Selection(this.targetPosition.lineNumber - this.selection.endLineNumber + this.selection.startLineNumber, this.selection.startLineNumber === this.selection.endLineNumber ?
this.targetPosition.column - this.selection.endColumn + this.selection.startColumn :
this.targetPosition.column - this.selection.endColumn + this.selection.startColumn, this.targetPosition.lineNumber, this.selection.startLineNumber === this.selection.endLineNumber ?
this.targetPosition.column :
this.selection.endColumn);
}
else {
// The target position is before the selection's end position. Since the selection doesn't contain the target position, the selection is one-line and target position is before this selection.
this.targetSelection = new Selection(this.targetPosition.lineNumber - this.selection.endLineNumber + this.selection.startLineNumber, this.targetPosition.column, this.targetPosition.lineNumber, this.targetPosition.column + this.selection.endColumn - this.selection.startColumn);
}
}
computeCursorState(model, helper) {
return this.targetSelection;
}
}