490 lines
15 KiB
JavaScript
490 lines
15 KiB
JavaScript
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/*
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* Ext JS Library 2.3.0
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* Copyright(c) 2006-2009, Ext JS, LLC.
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* licensing@extjs.com
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*
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* http://extjs.com/license
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*/
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/**
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@class Ext.grid.RowSelectionModel
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* @extends Ext.grid.AbstractSelectionModel
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* The default SelectionModel used by {@link Ext.grid.GridPanel}.
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* It supports multiple selections and keyboard selection/navigation. The objects stored
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* as selections and returned by {@link #getSelected}, and {@link #getSelections} are
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* the {@link Ext.data.Record Record}s which provide the data for the selected rows.
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* @constructor
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* @param {Object} config
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*/
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Ext.grid.RowSelectionModel = function(config){
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Ext.apply(this, config);
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this.selections = new Ext.util.MixedCollection(false, function(o){
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return o.id;
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});
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this.last = false;
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this.lastActive = false;
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this.addEvents(
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/**
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* @event selectionchange
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* Fires when the selection changes
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* @param {SelectionModel} this
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*/
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"selectionchange",
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/**
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* @event beforerowselect
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* Fires when a row is being selected, return false to cancel.
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* @param {SelectionModel} this
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* @param {Number} rowIndex The index to be selected
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* @param {Boolean} keepExisting False if other selections will be cleared
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* @param {Record} record The record to be selected
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*/
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"beforerowselect",
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/**
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* @event rowselect
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* Fires when a row is selected.
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* @param {SelectionModel} this
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* @param {Number} rowIndex The selected index
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* @param {Ext.data.Record} r The selected record
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*/
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"rowselect",
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/**
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* @event rowdeselect
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* Fires when a row is deselected.
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* @param {SelectionModel} this
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* @param {Number} rowIndex
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* @param {Record} record
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*/
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"rowdeselect"
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);
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Ext.grid.RowSelectionModel.superclass.constructor.call(this);
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};
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Ext.extend(Ext.grid.RowSelectionModel, Ext.grid.AbstractSelectionModel, {
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/**
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* @cfg {Boolean} singleSelect
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* True to allow selection of only one row at a time (defaults to false)
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*/
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singleSelect : false,
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/**
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* @cfg {Boolean} moveEditorOnEnter
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* False to turn off moving the editor to the next cell when the enter key is pressed
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*/
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// private
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initEvents : function(){
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if(!this.grid.enableDragDrop && !this.grid.enableDrag){
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this.grid.on("rowmousedown", this.handleMouseDown, this);
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}
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this.rowNav = new Ext.KeyNav(this.grid.getGridEl(), {
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"up" : function(e){
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if(!e.shiftKey || this.singleSelect){
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this.selectPrevious(false);
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}else if(this.last !== false && this.lastActive !== false){
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var last = this.last;
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this.selectRange(this.last, this.lastActive-1);
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this.grid.getView().focusRow(this.lastActive);
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if(last !== false){
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this.last = last;
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}
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}else{
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this.selectFirstRow();
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}
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},
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"down" : function(e){
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if(!e.shiftKey || this.singleSelect){
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this.selectNext(false);
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}else if(this.last !== false && this.lastActive !== false){
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var last = this.last;
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this.selectRange(this.last, this.lastActive+1);
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this.grid.getView().focusRow(this.lastActive);
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if(last !== false){
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this.last = last;
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}
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}else{
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this.selectFirstRow();
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}
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},
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scope: this
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});
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var view = this.grid.view;
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view.on("refresh", this.onRefresh, this);
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view.on("rowupdated", this.onRowUpdated, this);
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view.on("rowremoved", this.onRemove, this);
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},
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// private
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onRefresh : function(){
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var ds = this.grid.store, index;
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var s = this.getSelections();
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this.clearSelections(true);
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for(var i = 0, len = s.length; i < len; i++){
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var r = s[i];
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if((index = ds.indexOfId(r.id)) != -1){
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this.selectRow(index, true);
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}
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}
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if(s.length != this.selections.getCount()){
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this.fireEvent("selectionchange", this);
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}
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},
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// private
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onRemove : function(v, index, r){
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if(this.selections.remove(r) !== false){
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this.fireEvent('selectionchange', this);
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}
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},
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// private
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onRowUpdated : function(v, index, r){
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if(this.isSelected(r)){
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v.onRowSelect(index);
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}
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},
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/**
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* Select records.
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* @param {Array} records The records to select
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* @param {Boolean} keepExisting (optional) True to keep existing selections
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*/
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selectRecords : function(records, keepExisting){
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if(!keepExisting){
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this.clearSelections();
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}
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var ds = this.grid.store;
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for(var i = 0, len = records.length; i < len; i++){
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this.selectRow(ds.indexOf(records[i]), true);
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}
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},
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/**
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* Gets the number of selected rows.
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* @return {Number}
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*/
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getCount : function(){
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return this.selections.length;
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},
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/**
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* Selects the first row in the grid.
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*/
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selectFirstRow : function(){
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this.selectRow(0);
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},
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/**
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* Select the last row.
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* @param {Boolean} keepExisting (optional) True to keep existing selections
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*/
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selectLastRow : function(keepExisting){
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this.selectRow(this.grid.store.getCount() - 1, keepExisting);
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},
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/**
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* Selects the row immediately following the last selected row.
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* @param {Boolean} keepExisting (optional) True to keep existing selections
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* @return {Boolean} True if there is a next row, else false
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*/
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selectNext : function(keepExisting){
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if(this.hasNext()){
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this.selectRow(this.last+1, keepExisting);
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this.grid.getView().focusRow(this.last);
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return true;
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}
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return false;
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},
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/**
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* Selects the row that precedes the last selected row.
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* @param {Boolean} keepExisting (optional) True to keep existing selections
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* @return {Boolean} True if there is a previous row, else false
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*/
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selectPrevious : function(keepExisting){
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if(this.hasPrevious()){
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this.selectRow(this.last-1, keepExisting);
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this.grid.getView().focusRow(this.last);
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return true;
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}
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return false;
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},
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/**
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* Returns true if there is a next record to select
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* @return {Boolean}
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*/
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hasNext : function(){
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return this.last !== false && (this.last+1) < this.grid.store.getCount();
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},
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/**
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* Returns true if there is a previous record to select
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* @return {Boolean}
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*/
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hasPrevious : function(){
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return !!this.last;
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},
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/**
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* Returns the selected records
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* @return {Array} Array of selected records
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*/
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getSelections : function(){
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return [].concat(this.selections.items);
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},
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/**
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* Returns the first selected record.
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* @return {Record}
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*/
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getSelected : function(){
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return this.selections.itemAt(0);
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},
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/**
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* Calls the passed function with each selection. If the function returns false, iteration is
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* stopped and this function returns false. Otherwise it returns true.
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* @param {Function} fn
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* @param {Object} scope (optional)
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* @return {Boolean} true if all selections were iterated
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*/
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each : function(fn, scope){
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var s = this.getSelections();
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for(var i = 0, len = s.length; i < len; i++){
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if(fn.call(scope || this, s[i], i) === false){
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return false;
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}
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}
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return true;
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},
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/**
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* Clears all selections.
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*/
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clearSelections : function(fast){
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if(this.isLocked()) return;
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if(fast !== true){
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var ds = this.grid.store;
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var s = this.selections;
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s.each(function(r){
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this.deselectRow(ds.indexOfId(r.id));
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}, this);
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s.clear();
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}else{
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this.selections.clear();
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}
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this.last = false;
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},
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/**
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* Selects all rows.
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*/
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selectAll : function(){
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if(this.isLocked()) return;
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this.selections.clear();
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for(var i = 0, len = this.grid.store.getCount(); i < len; i++){
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this.selectRow(i, true);
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}
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},
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/**
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* Returns True if there is a selection.
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* @return {Boolean}
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*/
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hasSelection : function(){
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return this.selections.length > 0;
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},
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/**
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* Returns True if the specified row is selected.
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* @param {Number/Record} record The record or index of the record to check
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* @return {Boolean}
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*/
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isSelected : function(index){
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var r = typeof index == "number" ? this.grid.store.getAt(index) : index;
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return (r && this.selections.key(r.id) ? true : false);
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},
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/**
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* Returns True if the specified record id is selected.
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* @param {String} id The id of record to check
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* @return {Boolean}
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*/
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isIdSelected : function(id){
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return (this.selections.key(id) ? true : false);
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},
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// private
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handleMouseDown : function(g, rowIndex, e){
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if(e.button !== 0 || this.isLocked()){
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return;
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};
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var view = this.grid.getView();
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if(e.shiftKey && !this.singleSelect && this.last !== false){
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var last = this.last;
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this.selectRange(last, rowIndex, e.ctrlKey);
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this.last = last; // reset the last
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view.focusRow(rowIndex);
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}else{
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var isSelected = this.isSelected(rowIndex);
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if(e.ctrlKey && isSelected){
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this.deselectRow(rowIndex);
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}else if(!isSelected || this.getCount() > 1){
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this.selectRow(rowIndex, e.ctrlKey || e.shiftKey);
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view.focusRow(rowIndex);
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}
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}
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},
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/**
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* Selects multiple rows.
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* @param {Array} rows Array of the indexes of the row to select
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* @param {Boolean} keepExisting (optional) True to keep existing selections (defaults to false)
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*/
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selectRows : function(rows, keepExisting){
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if(!keepExisting){
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this.clearSelections();
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}
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for(var i = 0, len = rows.length; i < len; i++){
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this.selectRow(rows[i], true);
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}
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},
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/**
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* Selects a range of rows. All rows in between startRow and endRow are also selected.
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* @param {Number} startRow The index of the first row in the range
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* @param {Number} endRow The index of the last row in the range
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* @param {Boolean} keepExisting (optional) True to retain existing selections
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*/
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selectRange : function(startRow, endRow, keepExisting){
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if(this.isLocked()) return;
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if(!keepExisting){
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this.clearSelections();
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}
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if(startRow <= endRow){
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for(var i = startRow; i <= endRow; i++){
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this.selectRow(i, true);
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}
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}else{
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for(var i = startRow; i >= endRow; i--){
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this.selectRow(i, true);
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}
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}
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},
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/**
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* Deselects a range of rows. All rows in between startRow and endRow are also deselected.
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* @param {Number} startRow The index of the first row in the range
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* @param {Number} endRow The index of the last row in the range
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*/
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deselectRange : function(startRow, endRow, preventViewNotify){
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if(this.isLocked()) return;
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for(var i = startRow; i <= endRow; i++){
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this.deselectRow(i, preventViewNotify);
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}
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},
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/**
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* Selects a row.
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* @param {Number} row The index of the row to select
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* @param {Boolean} keepExisting (optional) True to keep existing selections
|
||
|
|
*/
|
||
|
|
selectRow : function(index, keepExisting, preventViewNotify){
|
||
|
|
if(this.isLocked() || (index < 0 || index >= this.grid.store.getCount()) || (keepExisting && this.isSelected(index))){
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
var r = this.grid.store.getAt(index);
|
||
|
|
if(r && this.fireEvent("beforerowselect", this, index, keepExisting, r) !== false){
|
||
|
|
if(!keepExisting || this.singleSelect){
|
||
|
|
this.clearSelections();
|
||
|
|
}
|
||
|
|
this.selections.add(r);
|
||
|
|
this.last = this.lastActive = index;
|
||
|
|
if(!preventViewNotify){
|
||
|
|
this.grid.getView().onRowSelect(index);
|
||
|
|
}
|
||
|
|
this.fireEvent("rowselect", this, index, r);
|
||
|
|
this.fireEvent("selectionchange", this);
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Deselects a row.
|
||
|
|
* @param {Number} row The index of the row to deselect
|
||
|
|
*/
|
||
|
|
deselectRow : function(index, preventViewNotify){
|
||
|
|
if(this.isLocked()) return;
|
||
|
|
if(this.last == index){
|
||
|
|
this.last = false;
|
||
|
|
}
|
||
|
|
if(this.lastActive == index){
|
||
|
|
this.lastActive = false;
|
||
|
|
}
|
||
|
|
var r = this.grid.store.getAt(index);
|
||
|
|
if(r){
|
||
|
|
this.selections.remove(r);
|
||
|
|
if(!preventViewNotify){
|
||
|
|
this.grid.getView().onRowDeselect(index);
|
||
|
|
}
|
||
|
|
this.fireEvent("rowdeselect", this, index, r);
|
||
|
|
this.fireEvent("selectionchange", this);
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
// private
|
||
|
|
restoreLast : function(){
|
||
|
|
if(this._last){
|
||
|
|
this.last = this._last;
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
// private
|
||
|
|
acceptsNav : function(row, col, cm){
|
||
|
|
return !cm.isHidden(col) && cm.isCellEditable(col, row);
|
||
|
|
},
|
||
|
|
|
||
|
|
// private
|
||
|
|
onEditorKey : function(field, e){
|
||
|
|
var k = e.getKey(), newCell, g = this.grid, ed = g.activeEditor;
|
||
|
|
var shift = e.shiftKey;
|
||
|
|
if(k == e.TAB){
|
||
|
|
e.stopEvent();
|
||
|
|
ed.completeEdit();
|
||
|
|
if(shift){
|
||
|
|
newCell = g.walkCells(ed.row, ed.col-1, -1, this.acceptsNav, this);
|
||
|
|
}else{
|
||
|
|
newCell = g.walkCells(ed.row, ed.col+1, 1, this.acceptsNav, this);
|
||
|
|
}
|
||
|
|
}else if(k == e.ENTER){
|
||
|
|
e.stopEvent();
|
||
|
|
ed.completeEdit();
|
||
|
|
if(this.moveEditorOnEnter !== false){
|
||
|
|
if(shift){
|
||
|
|
newCell = g.walkCells(ed.row - 1, ed.col, -1, this.acceptsNav, this);
|
||
|
|
}else{
|
||
|
|
newCell = g.walkCells(ed.row + 1, ed.col, 1, this.acceptsNav, this);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}else if(k == e.ESC){
|
||
|
|
ed.cancelEdit();
|
||
|
|
}
|
||
|
|
if(newCell){
|
||
|
|
g.startEditing(newCell[0], newCell[1]);
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
destroy: function(){
|
||
|
|
if(this.rowNav){
|
||
|
|
this.rowNav.disable();
|
||
|
|
this.rowNav = null;
|
||
|
|
}
|
||
|
|
Ext.grid.RowSelectionModel.superclass.destroy.call(this);
|
||
|
|
}
|
||
|
|
});
|