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/**
* @class YAHOO.ext.grid.AbstractDataModel
* @extends YAHOO.ext.util.Observable
* This abstract class provides default implementations of the events required by the Grid.
It takes care of the creating the CustomEvents and provides some convenient methods for firing the events. <br><br>
* @constructor
*/
YAHOO.ext.grid.AbstractDataModel = function(){
/** Fires when a cell is updated - fireDirect sig: (this, rowIndex, columnIndex)
* @private
* @type YAHOO.util.CustomEvent
* @deprecated Use addListener instead of accessing directly
*/
this.onCellUpdated = new YAHOO.util.CustomEvent('onCellUpdated');
/** Fires when all data needs to be revalidated - fireDirect sig: (thisd)
* @private
* @type YAHOO.util.CustomEvent
* @deprecated Use addListener instead of accessing directly
*/
this.onTableDataChanged = new YAHOO.util.CustomEvent('onTableDataChanged');
/** Fires when rows are deleted - fireDirect sig: (this, firstRowIndex, lastRowIndex)
* @private
* @type YAHOO.util.CustomEvent
* @deprecated Use addListener instead of accessing directly
*/
this.onRowsDeleted = new YAHOO.util.CustomEvent('onRowsDeleted');
/** Fires when a rows are inserted - fireDirect sig: (this, firstRowIndex, lastRowIndex)
* @private
* @type YAHOO.util.CustomEvent
* @deprecated Use addListener instead of accessing directly
*/
this.onRowsInserted = new YAHOO.util.CustomEvent('onRowsInserted');
/** Fires when a rows are updated - fireDirect sig: (this, firstRowIndex, lastRowIndex)
* @private
* @type YAHOO.util.CustomEvent
* @deprecated Use addListener instead of accessing directly
*/
this.onRowsUpdated = new YAHOO.util.CustomEvent('onRowsUpdated');
/** Fires when a sort has reordered the rows - fireDirect sig: (this, sortColumnIndex,
* @private
* sortDirection = 'ASC' or 'DESC')
* @type YAHOO.util.CustomEvent
* @deprecated Use addListener instead of accessing directly
*/
this.onRowsSorted = new YAHOO.util.CustomEvent('onRowsSorted');
this.events = {
/**
* @event cellupdated
* Fires when a cell is updated
* @param {DataModel} this
* @param {Number} rowIndex
* @param {Number} columnIndex
*/
'cellupdated' : this.onCellUpdated,
/**
* @event datachanged
* Fires when the entire data structure has changed
* @param {DataModel} this
*/
'datachanged' : this.onTableDataChanged,
/**
* @event rowsdeleted
* Fires when a range of rows have been deleted
* @param {DataModel} this
* @param {Number} firstRowIndex
* @param {Number} lastRowIndex
*/
'rowsdeleted' : this.onRowsDeleted,
/**
* @event rowsinserted
* Fires when a range of rows have been inserted
* @param {DataModel} this
* @param {Number} firstRowIndex
* @param {Number} lastRowIndex
*/
'rowsinserted' : this.onRowsInserted,
/**
* @event rowsupdated
* Fires when a range of rows have been updated
* @param {DataModel} this
* @param {Number} firstRowIndex
* @param {Number} lastRowIndex
*/
'rowsupdated' : this.onRowsUpdated,
/**
* @event rowssorted
* Fires when the data has been sorted
* @param {DataModel} this
*/
'rowssorted' : this.onRowsSorted
};
};
YAHOO.ext.grid.AbstractDataModel.prototype = {
fireEvent : YAHOO.ext.util.Observable.prototype.fireEvent,
on : YAHOO.ext.util.Observable.prototype.on,
addListener : YAHOO.ext.util.Observable.prototype.addListener,
delayedListener : YAHOO.ext.util.Observable.prototype.delayedListener,
removeListener : YAHOO.ext.util.Observable.prototype.removeListener,
purgeListeners : YAHOO.ext.util.Observable.prototype.purgeListeners,
bufferedListener : YAHOO.ext.util.Observable.prototype.bufferedListener,
/**
* Notifies listeners that the value of the cell at [row, col] has been updated
* @deprecated
* @private
*/
fireCellUpdated : function(row, col){
this.onCellUpdated.fireDirect(this, row, col);
},
/**
* Notifies listeners that all data for the grid may have changed - use as a last resort. This
* also wipes out all selections a user might have made.
* @deprecated
* @private
*/
fireTableDataChanged : function(){
this.onTableDataChanged.fireDirect(this);
},
/**
* Notifies listeners that rows in the range [firstRow, lastRow], inclusive, have been deleted
* @deprecated
* @private
*/
fireRowsDeleted : function(firstRow, lastRow){
this.onRowsDeleted.fireDirect(this, firstRow, lastRow);
},
/**
* Notifies listeners that rows in the range [firstRow, lastRow], inclusive, have been inserted
* @deprecated
* @private
*/
fireRowsInserted : function(firstRow, lastRow){
this.onRowsInserted.fireDirect(this, firstRow, lastRow);
},
/**
* Notifies listeners that rows in the range [firstRow, lastRow], inclusive, have been updated
* @deprecated
* @private
*/
fireRowsUpdated : function(firstRow, lastRow){
this.onRowsUpdated.fireDirect(this, firstRow, lastRow);
},
/**
* Notifies listeners that rows have been sorted and any indexes may be invalid
* @deprecated
* @private
*/
fireRowsSorted : function(sortColumnIndex, sortDir, noRefresh){
this.onRowsSorted.fireDirect(this, sortColumnIndex, sortDir, noRefresh);
},
/**
* Empty interface method - Classes which extend AbstractDataModel should implement this method.
* See {@link YAHOO.ext.DefaultDataModel#sort} for an example implementation.
* @private
*/
sort : function(sortInfo, columnIndex, direction, suppressEvent){
},
/**
* Interface method to supply info regarding the Grid's current sort state - if overridden,
* this should return an object like this {column: this.sortColumn, direction: this.sortDir}.
* @return {Object}
*/
getSortState : function(){
return {column: this.sortColumn, direction: this.sortDir};
},
/**
* Empty interface method - Classes which extend AbstractDataModel should implement this method.
* See {@link YAHOO.ext.DefaultDataModel} for an example implementation.
* @private
*/
getRowCount : function(){
},
/**
* Empty interface method - Classes which extend AbstractDataModel should implement this method to support virtual row counts.
* @private
*/
getTotalRowCount : function(){
return this.getRowCount();
},
/**
* Empty interface method - Classes which extend AbstractDataModel should implement this method.
* See {@link YAHOO.ext.DefaultDataModel} for an example implementation.
* @private
*/
getRowId : function(rowIndex){
},
/**
* Empty interface method - Classes which extend AbstractDataModel should implement this method.
* See {@link YAHOO.ext.DefaultDataModel} for an example implementation.
* @private
*/
getValueAt : function(rowIndex, colIndex){
},
/**
* Empty interface method - Classes which extend AbstractDataModel should implement this method.
* See {@link YAHOO.ext.DefaultDataModel} for an example implementation.
* @private
*/
setValueAt : function(value, rowIndex, colIndex){
},
isPaged : function(){
return false;
}
};
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