janus/lib/collection/derived/flattened-list.js

the two-faced application library-framework

// Generated by CoffeeScript 1.12.2
(function() {
  var DerivedList, FlattenedList, List, ref, util,
    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
    hasProp = {}.hasOwnProperty;

  ref = require('../list'), List = ref.List, DerivedList = ref.DerivedList;

  util = require('../../util/util');

  FlattenedList = (function(superClass) {
    var sizeof;

    extend(FlattenedList, superClass);

    function FlattenedList(parent, options) {
      var i, idx, len, list, ref1;
      this.parent = parent;
      this.options = options != null ? options : {};
      FlattenedList.__super__.constructor.call(this);
      this._listListeners = new List();
      ref1 = this.parent.list;
      for (idx = i = 0, len = ref1.length; i < len; idx = ++i) {
        list = ref1[idx];
        this._addObj(list, idx);
      }
      this.listenTo(this.parent, 'added', (function(_this) {
        return function(obj, idx) {
          return _this._addObj(obj, idx);
        };
      })(this));
      this.listenTo(this.parent, 'moved', (function(_this) {
        return function(obj, idx, oldIdx) {
          return _this._moveObj(obj, oldIdx, idx);
        };
      })(this));
      this.listenTo(this.parent, 'removed', (function(_this) {
        return function(obj, idx) {
          return _this._removeObj(obj, idx);
        };
      })(this));
    }

    sizeof = function(x) {
      if ((x != null ? x.isMappable : void 0) === true) {
        return x.length_;
      } else {
        return 1;
      }
    };

    FlattenedList.prototype._getOverallIdx = function(parentIdx, offset) {
      if (offset == null) {
        offset = 0;
      }
      return util.foldLeft(0)(this.parent.list.slice(0, parentIdx), function(length, x) {
        return length + sizeof(x);
      }) + offset;
    };

    FlattenedList.prototype._addObj = function(obj, idx) {
      var elem, event, handler, i, len, listeners, offset, ref1;
      if ((obj != null ? obj.isMappable : void 0) === true) {
        listeners = {
          added: (function(_this) {
            return function(elem, offset) {
              return _this._add(elem, _this._getOverallIdx(_this._listListeners.list.indexOf(listeners), offset));
            };
          })(this),
          moved: (function(_this) {
            return function(elem, newIdx, oldIdx) {
              var mappedBase;
              mappedBase = _this._getOverallIdx(_this._listListeners.list.indexOf(listeners));
              return _this._moveAt(mappedBase + oldIdx, mappedBase + newIdx);
            };
          })(this),
          removed: (function(_this) {
            return function(_, offset) {
              return _this._removeAt(_this._getOverallIdx(_this._listListeners.list.indexOf(listeners), offset));
            };
          })(this)
        };
        for (event in listeners) {
          handler = listeners[event];
          obj.on(event, handler);
        }
        this._listListeners.add(listeners, idx);
        ref1 = obj.list;
        for (offset = i = 0, len = ref1.length; i < len; offset = ++i) {
          elem = ref1[offset];
          this._add(elem, this._getOverallIdx(idx, offset));
        }
      } else {
        this._add(obj, this._getOverallIdx(idx));
      }
    };

    FlattenedList.prototype._moveObj = function(obj, oldIdx, newIdx) {
      var _, i, j, mNewIdx, mOldIdx, offset, ref1, ref2;
      mOldIdx = this._getOverallIdx(oldIdx);
      mNewIdx = this._getOverallIdx(newIdx);
      if ((obj != null ? obj.isMappable : void 0) === true) {
        if (newIdx > oldIdx) {
          mNewIdx += sizeof(obj);
          mNewIdx -= sizeof(this.parent.list[newIdx - 1]);
        }
        if (newIdx < oldIdx) {
          mOldIdx -= sizeof(obj);
          mOldIdx += sizeof(this.parent.list[oldIdx]);
        }
        if (newIdx > oldIdx) {
          for (_ = i = 0, ref1 = obj.length_; 0 <= ref1 ? i < ref1 : i > ref1; _ = 0 <= ref1 ? ++i : --i) {
            this._moveAt(mOldIdx, mNewIdx);
          }
        } else if (newIdx < oldIdx) {
          for (offset = j = 0, ref2 = obj.length_; 0 <= ref2 ? j < ref2 : j > ref2; offset = 0 <= ref2 ? ++j : --j) {
            this._moveAt(mOldIdx + offset, mNewIdx + offset);
          }
        }
      } else {
        this._moveAt(mOldIdx, mNewIdx);
      }
      this._listListeners.moveAt(oldIdx, newIdx);
    };

    FlattenedList.prototype._removeObj = function(obj, idx) {
      var _, event, handler, i, len, listeners, objStartIdx, ref1;
      objStartIdx = this._getOverallIdx(idx);
      listeners = this._listListeners.removeAt(idx);
      if ((obj != null ? obj.isMappable : void 0) === true) {
        for (event in listeners) {
          handler = listeners[event];
          obj.off(event, handler);
        }
        ref1 = obj.list;
        for (i = 0, len = ref1.length; i < len; i++) {
          _ = ref1[i];
          this._removeAt(objStartIdx);
        }
      } else {
        this._removeAt(objStartIdx);
      }
    };

    FlattenedList.prototype.__destroy = function() {
      var event, handler, i, idx, len, listeners, ref1;
      ref1 = this._listListeners.list;
      for (idx = i = 0, len = ref1.length; i < len; idx = ++i) {
        listeners = ref1[idx];
        if (listeners != null) {
          for (event in listeners) {
            handler = listeners[event];
            this.parent.list[idx].off(event, handler);
          }
        }
      }
      this._listListeners.destroy();
    };

    return FlattenedList;

  })(DerivedList);

  module.exports = {
    FlattenedList: FlattenedList
  };

}).call(this);