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First version of the newly restructured repository
This commit is contained in:
Giulio Cesare Solaroli
339
frontend/beta/js/YUI-extensions/data/DefaultDataModel.js
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339
frontend/beta/js/YUI-extensions/data/DefaultDataModel.js
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/**
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* @class YAHOO.ext.grid.DefaultDataModel
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* This is the default implementation of a DataModel used by the Grid. It works
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* with multi-dimensional array based data. Using the event system in the base class
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* {@link YAHOO.ext.grid.AbstractDataModel}, all updates to this DataModel are automatically
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* reflected in the user interface.
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* <br>Usage:<br>
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* <pre><code>
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* var myData = [
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["MSFT","Microsoft Corporation", "314,571.156", "32,187.000", "55000"],
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["ORCL", "Oracle Corporation", "62,615.266", "9,519.000", "40650"]
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* ];
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* var dataModel = new YAHOO.ext.grid.DefaultDataModel(myData);
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* </code></pre>
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* @extends YAHOO.ext.grid.AbstractDataModel
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* @constructor
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* @param {Array} data
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*/
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YAHOO.ext.grid.DefaultDataModel = function(data){
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YAHOO.ext.grid.DefaultDataModel.superclass.constructor.call(this);
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/**@private*/
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this.data = data;
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};
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YAHOO.extendX(YAHOO.ext.grid.DefaultDataModel, YAHOO.ext.grid.AbstractDataModel, {
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/**
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* Returns the number of rows in the dataset
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* @return {Number}
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*/
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getRowCount : function(){
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return this.data.length;
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},
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/**
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* Returns the ID of the specified row. By default it return the value of the first column.
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* Override to provide more advanced ID handling.
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* @return {Number}
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*/
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getRowId : function(rowIndex){
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return this.data[rowIndex][0];
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},
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/**
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* Returns the column data for the specified row.
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* @return {Array}
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*/
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getRow : function(rowIndex){
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return this.data[rowIndex];
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},
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/**
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* Returns the column data for the specified rows as a
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* multi-dimensional array: rows[3][0] would give you the value of row 4, column 0.
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* @param {Array} indexes The row indexes to fetch
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* @return {Array}
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*/
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getRows : function(indexes){
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var data = this.data;
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var r = [];
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for(var i = 0; i < indexes.length; i++){
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r.push(data[indexes[i]]);
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}
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return r;
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},
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/**
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* Returns the value at the specified data position
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* @param {Number} rowIndex
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* @param {Number} colIndex
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* @return {Object}
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*/
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getValueAt : function(rowIndex, colIndex){
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return this.data[rowIndex][colIndex];
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},
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/**
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* Sets the specified value at the specified data position
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* @param {Object} value The new value
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* @param {Number} rowIndex
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* @param {Number} colIndex
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*/
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setValueAt: function(value, rowIndex, colIndex){
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this.data[rowIndex][colIndex] = value;
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this.fireCellUpdated(rowIndex, colIndex);
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},
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/**
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* @private
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* Removes the specified range of rows.
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* @param {Number} startIndex
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* @param {<i>Number</i>} endIndex (optional) Defaults to startIndex
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*/
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removeRows: function(startIndex, endIndex){
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endIndex = endIndex || startIndex;
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this.data.splice(startIndex, endIndex-startIndex+1);
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this.fireRowsDeleted(startIndex, endIndex);
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},
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/**
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* Remove a row.
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* @param {Number} index
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*/
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removeRow: function(index){
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this.data.splice(index, 1);
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this.fireRowsDeleted(index, index);
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},
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/**
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* @private
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* Removes all rows.
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*/
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removeAll: function(){
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var count = this.getRowCount();
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if(count > 0){
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this.removeRows(0, count-1);
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}
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},
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/**
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* Query the DataModel rows by the filters defined in spec, for example...
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* <pre><code>
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* // column 1 starts with Jack, column 2 filtered by myFcn, column 3 equals 'Fred'
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* dataModel.filter({1: /^Jack.+/i}, 2: myFcn, 3: 'Fred'});
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* </code></pre>
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* @param {Object} spec The spec is generally an object literal consisting of
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* column index and filter type. The filter type can be a string/number (exact match),
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* a regular expression to test using String.search() or a function to call. If it's a function,
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* it will be called with the value for the specified column and an array of the all column
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* values for that row: yourFcn(value, columnData). If it returns anything other than true,
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* the row is not a match. If you have modified Object.prototype this method may fail.
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* @param {Boolean} returnUnmatched True to return rows which <b>don't</b> match the query instead
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* of rows that do match
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* @return {Array} An array of row indexes that match
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*/
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query: function(spec, returnUnmatched){
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var d = this.data;
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var r = [];
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for(var i = 0; i < d.length; i++){
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var row = d[i];
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var isMatch = true;
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for(var col in spec){
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//if(typeof spec[col] != 'function'){
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if(!isMatch) continue;
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var filter = spec[col];
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switch(typeof filter){
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case 'string':
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case 'number':
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case 'boolean':
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if(row[col] != filter){
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isMatch = false;
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}
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break;
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case 'function':
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if(!filter(row[col], row)){
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isMatch = false;
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}
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break;
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case 'object':
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if(filter instanceof RegExp){
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if(String(row[col]).search(filter) === -1){
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isMatch = false;
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}
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}
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break;
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}
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//}
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}
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if(isMatch && !returnUnmatched){
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r.push(i);
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}else if(!isMatch && returnUnmatched){
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r.push(i);
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}
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}
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return r;
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},
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/**
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* Filter the DataModel rows by the query defined in spec, see {@link #query} for more details
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* on the query spec.
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* @param {Object} query The query spec {@link #query}
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* @return {Number} The number of rows removed
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*/
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filter: function(query){
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var matches = this.query(query, true);
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var data = this.data;
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// go thru the data setting matches to deleted
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// while not disturbing row indexes
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for(var i = 0; i < matches.length; i++){
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data[matches[i]]._deleted = true;
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}
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for(var i = 0; i < data.length; i++){
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while(data[i] && data[i]._deleted === true){
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this.removeRow(i);
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}
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}
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return matches.length;
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},
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/**
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* Adds a row to the dataset.
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* @param {Array} cellValues The array of values for the new row
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* @return {Number} The index of the added row
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*/
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addRow: function(cellValues){
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this.data.push(cellValues);
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var newIndex = this.data.length-1;
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this.fireRowsInserted(newIndex, newIndex);
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this.applySort();
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return newIndex;
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},
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/**
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* @private
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* Adds a set of rows.
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* @param {Array} rowData This should be an array of arrays like the constructor takes
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*/
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addRows: function(rowData){
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this.data = this.data.concat(rowData);
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var firstIndex = this.data.length-rowData.length;
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this.fireRowsInserted(firstIndex, firstIndex+rowData.length-1);
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this.applySort();
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},
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/**
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* Inserts a row a the specified location in the dataset.
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* @param {Number} index The index where the row should be inserted
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* @param {Array} cellValues The array of values for the new row
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* @return {Number} The index the row was inserted in
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*/
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insertRow: function(index, cellValues){
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this.data.splice(index, 0, cellValues);
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this.fireRowsInserted(index, index);
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this.applySort();
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return index;
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},
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/**
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* @private
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* Inserts a set of rows.
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* @param {Number} index The index where the rows should be inserted
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* @param {Array} rowData This should be an array of arrays like the constructor takes
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*/
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insertRows: function(index, rowData){
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/*
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if(index == this.data.length){ // try these two first since they are faster
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this.data = this.data.concat(rowData);
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}else if(index == 0){
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this.data = rowData.concat(this.data);
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}else{
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var newData = this.data.slice(0, index);
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newData.concat(rowData);
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newData.concat(this.data.slice(index));
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this.data = newData;
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}*/
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var args = rowData.concat();
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args.splice(0, 0, index, 0);
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this.data.splice.apply(this.data, args);
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this.fireRowsInserted(index, index+rowData.length-1);
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this.applySort();
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},
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/**
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* Applies the last used sort to the current data.
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*/
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applySort: function(suppressEvent){
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if(typeof this.sortColumn != 'undefined'){
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this.sort(this.sortInfo, this.sortColumn, this.sortDir, suppressEvent);
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}
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},
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/**
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* Sets the default sort info. Note: this function does not actually apply the sort.
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* @param {Function/Object} sortInfo A sort comparison function or null to use the default or A object that has a method getSortType(index) that returns a function like
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* a grid column model.
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* @param {Number} columnIndex The column index to sort by
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* @param {String} direction The direction of the sort ('DESC' or 'ASC')
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*/
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setDefaultSort: function(sortInfo, columnIndex, direction){
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this.sortInfo = sortInfo;
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this.sortColumn = columnIndex;
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this.sortDir = direction;
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},
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/**
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* Sorts the data by the specified column - Uses the sortType specified for the column in the passed columnModel.
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* @param {Function/Object} sortInfo A sort comparison function or null to use the default or A object that has a method getSortType(index) that returns a function like
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* a grid column model.
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* @param {Number} columnIndex The column index to sort by
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* @param {String} direction The direction of the sort ('DESC' or 'ASC')
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*/
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sort: function(sortInfo, columnIndex, direction, suppressEvent){
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// store these so we can maintain sorting when we load new data
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this.sortInfo = sortInfo;
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this.sortColumn = columnIndex;
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this.sortDir = direction;
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var dsc = (direction && direction.toUpperCase() == 'DESC');
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var sortType = null;
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if(sortInfo != null){
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if(typeof sortInfo == 'function'){
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sortType = sortInfo;
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}else if(typeof sortInfo == 'object'){
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sortType = sortInfo.getSortType(columnIndex);;
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}
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}
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var fn = function(cells, cells2){
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var v1 = sortType ? sortType(cells[columnIndex], cells) : cells[columnIndex];
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var v2 = sortType ? sortType(cells2[columnIndex], cells2) : cells2[columnIndex];
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if(v1 < v2)
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return dsc ? +1 : -1;
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if(v1 > v2)
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return dsc ? -1 : +1;
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return 0;
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};
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this.data.sort(fn);
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if(!suppressEvent){
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this.fireRowsSorted(columnIndex, direction);
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}
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},
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/**
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* Calls passed function with each rows data - if the function returns false it stops.
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* @param {Function} fn
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* @param {Object} scope (optional)
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*/
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each: function(fn, scope){
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var d = this.data;
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for(var i = 0, len = d.length; i < len; i++){
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if(fn.call(scope || window, d[i], i) === false) break;
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}
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}
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});
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/**
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* Alias to YAHOO.ext.grid.DefaultColumnModel.sortTypes
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* @static
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*/
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if(YAHOO.ext.grid.DefaultColumnModel){
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YAHOO.ext.grid.DefaultDataModel.sortTypes = YAHOO.ext.grid.DefaultColumnModel.sortTypes;
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}
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