text: /*---------------------------------------------------------------------------------------------
   *  Copyright (c) Microsoft Corporation. All rights reserved.
   *  Licensed under the MIT License. See License.txt in the project root for license information.
   *--------------------------------------------------------------------------------------------*/
  import './dnd.css';
  import { Disposable } from '../../../base/common/lifecycle';
  import { isMacintosh } from '../../../base/common/platform';
  import { registerEditorContribution } from '../../browser/editorExtensions';
  import { Position } from '../../common/core/position';
  import { Range } from '../../common/core/range';
  import { Selection } from '../../common/core/selection';
  import { DragAndDropCommand } from './dragAndDropCommand';
  import { ModelDecorationOptions } from '../../common/model/textModel';
  function hasTriggerModifier(e) {
      if (isMacintosh) {
          return e.altKey;
      }
      else {
          return e.ctrlKey;
      }
  }
  export class DragAndDropController extends Disposable {
      constructor(editor) {
          super();
          this._editor = editor;
          this._register(this._editor.onMouseDown((e) => this._onEditorMouseDown(e)));
          this._register(this._editor.onMouseUp((e) => this._onEditorMouseUp(e)));
          this._register(this._editor.onMouseDrag((e) => this._onEditorMouseDrag(e)));
          this._register(this._editor.onMouseDrop((e) => this._onEditorMouseDrop(e)));
          this._register(this._editor.onMouseDropCanceled(() => this._onEditorMouseDropCanceled()));
          this._register(this._editor.onKeyDown((e) => this.onEditorKeyDown(e)));
          this._register(this._editor.onKeyUp((e) => this.onEditorKeyUp(e)));
          this._register(this._editor.onDidBlurEditorWidget(() => this.onEditorBlur()));
          this._register(this._editor.onDidBlurEditorText(() => this.onEditorBlur()));
          this._dndDecorationIds = [];
          this._mouseDown = false;
          this._modifierPressed = false;
          this._dragSelection = null;
      }
      onEditorBlur() {
          this._removeDecoration();
          this._dragSelection = null;
          this._mouseDown = false;
          this._modifierPressed = false;
      }
      onEditorKeyDown(e) {
          if (!this._editor.getOption(29 /* dragAndDrop */) || this._editor.getOption(16 /* columnSelection */)) {
              return;
          }
          if (hasTriggerModifier(e)) {
              this._modifierPressed = true;
          }
          if (this._mouseDown && hasTriggerModifier(e)) {
              this._editor.updateOptions({
                  mouseStyle: 'copy'
              });
          }
      }
      onEditorKeyUp(e) {
          if (!this._editor.getOption(29 /* dragAndDrop */) || this._editor.getOption(16 /* columnSelection */)) {
              return;
          }
          if (hasTriggerModifier(e)) {
              this._modifierPressed = false;
          }
          if (this._mouseDown && e.keyCode === DragAndDropController.TRIGGER_KEY_VALUE) {
              this._editor.updateOptions({
                  mouseStyle: 'default'
              });
          }
      }
      _onEditorMouseDown(mouseEvent) {
          this._mouseDown = true;
      }
      _onEditorMouseUp(mouseEvent) {
          this._mouseDown = false;
          // Whenever users release the mouse, the drag and drop operation should finish and the cursor should revert to text.
          this._editor.updateOptions({
              mouseStyle: 'text'
          });
      }
      _onEditorMouseDrag(mouseEvent) {
          let target = mouseEvent.target;
          if (this._dragSelection === null) {
              const selections = this._editor.getSelections() || [];
              let possibleSelections = selections.filter(selection => target.position && selection.containsPosition(target.position));
              if (possibleSelections.length === 1) {
                  this._dragSelection = possibleSelections[0];
              }
              else {
                  return;
              }
          }
          if (hasTriggerModifier(mouseEvent.event)) {
              this._editor.updateOptions({
                  mouseStyle: 'copy'
              });
          }
          else {
              this._editor.updateOptions({
                  mouseStyle: 'default'
              });
          }
          if (target.position) {
              if (this._dragSelection.containsPosition(target.position)) {
                  this._removeDecoration();
              }
              else {
                  this.showAt(target.position);
              }
          }
      }
      _onEditorMouseDropCanceled() {
          this._editor.updateOptions({
              mouseStyle: 'text'
          });
          this._removeDecoration();
          this._dragSelection = null;
          this._mouseDown = false;
      }
      _onEditorMouseDrop(mouseEvent) {
          if (mouseEvent.target && (this._hitContent(mouseEvent.target) || this._hitMargin(mouseEvent.target)) && mouseEvent.target.position) {
              let newCursorPosition = new Position(mouseEvent.target.position.lineNumber, mouseEvent.target.position.column);
              if (this._dragSelection === null) {
                  let newSelections = null;
                  if (mouseEvent.event.shiftKey) {
                      let primarySelection = this._editor.getSelection();
                      if (primarySelection) {
                          const { selectionStartLineNumber, selectionStartColumn } = primarySelection;
                          newSelections = [new Selection(selectionStartLineNumber, selectionStartColumn, newCursorPosition.lineNumber, newCursorPosition.column)];
                      }
                  }
                  else {
                      newSelections = (this._editor.getSelections() || []).map(selection => {
                          if (selection.containsPosition(newCursorPosition)) {
                              return new Selection(newCursorPosition.lineNumber, newCursorPosition.column, newCursorPosition.lineNumber, newCursorPosition.column);
                          }
                          else {
                              return selection;
                          }
                      });
                  }
                  // Use `mouse` as the source instead of `api` and setting the reason to explicit (to behave like any other mouse operation).
                  this._editor.setSelections(newSelections || [], 'mouse', 3 /* Explicit */);
              }
              else if (!this._dragSelection.containsPosition(newCursorPosition) ||
                  ((hasTriggerModifier(mouseEvent.event) ||
                      this._modifierPressed) && (this._dragSelection.getEndPosition().equals(newCursorPosition) || this._dragSelection.getStartPosition().equals(newCursorPosition)) // we allow users to paste content beside the selection
                  )) {
                  this._editor.pushUndoStop();
                  this._editor.executeCommand(DragAndDropController.ID, new DragAndDropCommand(this._dragSelection, newCursorPosition, hasTriggerModifier(mouseEvent.event) || this._modifierPressed));
                  this._editor.pushUndoStop();
              }
          }
          this._editor.updateOptions({
              mouseStyle: 'text'
          });
          this._removeDecoration();
          this._dragSelection = null;
          this._mouseDown = false;
      }
      showAt(position) {
          let newDecorations = [{
                  range: new Range(position.lineNumber, position.column, position.lineNumber, position.column),
                  options: DragAndDropController._DECORATION_OPTIONS
              }];
          this._dndDecorationIds = this._editor.deltaDecorations(this._dndDecorationIds, newDecorations);
          this._editor.revealPosition(position, 1 /* Immediate */);
      }
      _removeDecoration() {
          this._dndDecorationIds = this._editor.deltaDecorations(this._dndDecorationIds, []);
      }
      _hitContent(target) {
          return target.type === 6 /* CONTENT_TEXT */ ||
              target.type === 7 /* CONTENT_EMPTY */;
      }
      _hitMargin(target) {
          return target.type === 2 /* GUTTER_GLYPH_MARGIN */ ||
              target.type === 3 /* GUTTER_LINE_NUMBERS */ ||
              target.type === 4 /* GUTTER_LINE_DECORATIONS */;
      }
      dispose() {
          this._removeDecoration();
          this._dragSelection = null;
          this._mouseDown = false;
          this._modifierPressed = false;
          super.dispose();
      }
  }
  DragAndDropController.ID = 'editor.contrib.dragAndDrop';
  DragAndDropController.TRIGGER_KEY_VALUE = isMacintosh ? 6 /* Alt */ : 5 /* Ctrl */;
  DragAndDropController._DECORATION_OPTIONS = ModelDecorationOptions.register({
      description: 'dnd-target',
      className: 'dnd-target'
  });
  registerEditorContribution(DragAndDropController.ID, DragAndDropController);
  