Funkin/source/funkin/ui/debug/charting/commands/SetItemSelectionCommand.hx

package funkin.ui.debug.charting.commands;

import funkin.data.song.SongData.SongNoteData;
import funkin.data.song.SongData.SongEventData;

/**
 * Command to set the current selection in the chart editor (rather than appending it).
 * Deselects any notes that are not in the new selection.
 */
@:nullSafety
@:access(funkin.ui.debug.charting.ChartEditorState)
class SetItemSelectionCommand implements ChartEditorCommand
{
  var notes:Array<SongNoteData>;
  var events:Array<SongEventData>;
  var previousNoteSelection:Array<SongNoteData> = [];
  var previousEventSelection:Array<SongEventData> = [];

  public function new(notes:Array<SongNoteData>, events:Array<SongEventData>)
  {
    this.notes = notes;
    this.events = events;
  }

  public function execute(state:ChartEditorState):Void
  {
    this.previousNoteSelection = state.currentNoteSelection;
    this.previousEventSelection = state.currentEventSelection;

    state.currentNoteSelection = notes;
    state.currentEventSelection = events;

    state.noteDisplayDirty = true;
  }

  public function undo(state:ChartEditorState):Void
  {
    state.currentNoteSelection = previousNoteSelection;
    state.currentEventSelection = previousEventSelection;

    state.noteDisplayDirty = true;
  }

  public function shouldAddToHistory(state:ChartEditorState):Bool
  {
    // Add to the history if we actually performed an action.
    return (state.currentNoteSelection != previousNoteSelection && state.currentEventSelection != previousEventSelection);
  }

  public function toString():String
  {
    return 'Select ${notes.length + events.length} Items';
  }
}