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    bind: function () {
      var options = this.options;
      var $this = this.$element;
      var $cropper = this.$cropper;

      if ($.isFunction(options.cropstart)) {
        $this.on(EVENT_CROP_START, options.cropstart);
      }

      if ($.isFunction(options.cropmove)) {
        $this.on(EVENT_CROP_MOVE, options.cropmove);
      }

      if ($.isFunction(options.cropend)) {
        $this.on(EVENT_CROP_END, options.cropend);
      }

      if ($.isFunction(options.crop)) {
        $this.on(EVENT_CROP, options.crop);
      }

      if ($.isFunction(options.zoom)) {
        $this.on(EVENT_ZOOM, options.zoom);
      }

      $cropper.on(EVENT_MOUSE_DOWN, $.proxy(this.cropStart, this));

      if (options.zoomable && options.zoomOnWheel) {
        $cropper.on(EVENT_WHEEL, $.proxy(this.wheel, this));
      }

      if (options.toggleDragModeOnDblclick) {
        $cropper.on(EVENT_DBLCLICK, $.proxy(this.dblclick, this));
      }

      $document.
        on(EVENT_MOUSE_MOVE, (this._cropMove = proxy(this.cropMove, this))).
        on(EVENT_MOUSE_UP, (this._cropEnd = proxy(this.cropEnd, this)));

      if (options.responsive) {
        $window.on(EVENT_RESIZE, (this._resize = proxy(this.resize, this)));
      }
    },

    unbind: function () {
      var options = this.options;
      var $this = this.$element;
      var $cropper = this.$cropper;

      if ($.isFunction(options.cropstart)) {
        $this.off(EVENT_CROP_START, options.cropstart);
      }

      if ($.isFunction(options.cropmove)) {
        $this.off(EVENT_CROP_MOVE, options.cropmove);
      }

      if ($.isFunction(options.cropend)) {
        $this.off(EVENT_CROP_END, options.cropend);
      }

      if ($.isFunction(options.crop)) {
        $this.off(EVENT_CROP, options.crop);
      }

      if ($.isFunction(options.zoom)) {
        $this.off(EVENT_ZOOM, options.zoom);
      }

      $cropper.off(EVENT_MOUSE_DOWN, this.cropStart);

      if (options.zoomable && options.zoomOnWheel) {
        $cropper.off(EVENT_WHEEL, this.wheel);
      }

      if (options.toggleDragModeOnDblclick) {
        $cropper.off(EVENT_DBLCLICK, this.dblclick);
      }

      $document.
        off(EVENT_MOUSE_MOVE, this._cropMove).
        off(EVENT_MOUSE_UP, this._cropEnd);

      if (options.responsive) {
        $window.off(EVENT_RESIZE, this._resize);
      }
    },