ListMenu.js
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/**
* @class Ext.ux.grid.menu.ListMenu
* @extends Ext.menu.Menu
* This is a supporting class for {@link Ext.ux.grid.filter.ListFilter}.
* Although not listed as configuration options for this class, this class
* also accepts all configuration options from {@link Ext.ux.grid.filter.ListFilter}.
*/
Ext.define('Ext.ux.grid.menu.ListMenu', {
extend: 'Ext.menu.Menu',
/**
* @cfg {String} labelField
* Defaults to 'text'.
*/
labelField : 'text',
/**
* @cfg {String} paramPrefix
* Defaults to 'Loading...'.
*/
loadingText : 'Loading...',
/**
* @cfg {Boolean} loadOnShow
* Defaults to true.
*/
loadOnShow : true,
/**
* @cfg {Boolean} single
* Specify true to group all items in this list into a single-select
* radio button group. Defaults to false.
*/
single : false,
constructor : function (cfg) {
this.selected = [];
this.addEvents(
/**
* @event checkchange
* Fires when there is a change in checked items from this list
* @param {Object} item Ext.menu.CheckItem
* @param {Object} checked The checked value that was set
*/
'checkchange'
);
this.callParent([cfg = cfg || {}]);
if(!cfg.store && cfg.options){
var options = [];
for(var i=0, len=cfg.options.length; i<len; i++){
var value = cfg.options[i];
switch(Ext.type(value)){
case 'array': options.push(value); break;
case 'object': options.push([value.id, value[this.labelField]]); break;
case 'string': options.push([value, value]); break;
}
}
this.store = Ext.create('Ext.data.ArrayStore', {
fields: ['id', this.labelField],
data: options,
listeners: {
'load': this.onLoad,
scope: this
}
});
this.loaded = true;
} else {
this.add({text: this.loadingText, iconCls: 'loading-indicator'});
this.store.on('load', this.onLoad, this);
}
},
destroy : function () {
if (this.store) {
this.store.destroy();
}
this.callParent();
},
/**
* Lists will initially show a 'loading' item while the data is retrieved from the store.
* In some cases the loaded data will result in a list that goes off the screen to the
* right (as placement calculations were done with the loading item). This adapter will
* allow show to be called with no arguments to show with the previous arguments and
* thus recalculate the width and potentially hang the menu from the left.
*/
show : function () {
var lastArgs = null;
return function(){
if(arguments.length === 0){
this.callParent(lastArgs);
} else {
lastArgs = arguments;
if (this.loadOnShow && !this.loaded) {
this.store.load();
}
this.callParent(arguments);
}
};
}(),
/** @private */
onLoad : function (store, records) {
var me = this,
visible = me.isVisible(),
gid, item, itemValue, i, len;
me.hide(false);
me.removeAll(true);
gid = me.single ? Ext.id() : null;
for (i = 0, len = records.length; i < len; i++) {
itemValue = records[i].get('id');
item = Ext.create('Ext.menu.CheckItem', {
text: records[i].get(me.labelField),
group: gid,
checked: Ext.Array.contains(me.selected, itemValue),
hideOnClick: false,
value: itemValue
});
item.on('checkchange', me.checkChange, me);
me.add(item);
}
me.loaded = true;
if (visible) {
me.show();
}
me.fireEvent('load', me, records);
},
/**
* Get the selected items.
* @return {Array} selected
*/
getSelected : function () {
return this.selected;
},
/** @private */
setSelected : function (value) {
value = this.selected = [].concat(value);
if (this.loaded) {
this.items.each(function(item){
item.setChecked(false, true);
for (var i = 0, len = value.length; i < len; i++) {
if (item.value == value[i]) {
item.setChecked(true, true);
}
}
}, this);
}
},
/**
* Handler for the 'checkchange' event from an check item in this menu
* @param {Object} item Ext.menu.CheckItem
* @param {Object} checked The checked value that was set
*/
checkChange : function (item, checked) {
var value = [];
this.items.each(function(item){
if (item.checked) {
value.push(item.value);
}
},this);
this.selected = value;
this.fireEvent('checkchange', item, checked);
}
});