javascript extjs4 在控制器中获取视图实例？
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extjs4 get instance of view in controller?
提问by reagan
I am trying to get an instance of my view within the controller. How can I accomplish this. The main reason I am trying to do this is that I have a grid in my view that I want to disable until a selection from a combobox is made so I need to have access to the instance of the view.
我正在尝试在控制器中获取我的视图实例。我怎样才能做到这一点。我尝试这样做的主要原因是我的视图中有一个网格，我想禁用它，直到从组合框中进行选择，所以我需要访问视图的实例。
Help?
帮助？
My controller:
我的控制器：
Ext.define('STK.controller.SiteSelectController', {
extend: 'Ext.app.Controller',
stores: ['Inventory', 'Stacker', 'Stackers'],
models: ['Inventory', 'Stackers'],
views: ['scheduler.Scheduler'],
refs: [{
ref: 'stackerselect',
selector: 'panel'
}],
init: function () {
this.control({
'viewport > panel': {
render: this.onPanelRendered
}
});
},
/* render all default functionality */
onPanelRendered: function () {
var view = this.getView('Scheduler'); // this is null?
}
});
My view:
我的观点：
Ext.Loader.setConfig({
enabled: true
});
Ext.Loader.setPath('Ext.ux', '/extjs/examples/ux');
Ext.require([
'Ext.ux.grid.FiltersFeature',
'Ext.ux.LiveSearchGridPanel']);
var filters = {
ftype: 'filters',
autoReload: false,
encode: false,
local: true
};
Ext.define('invtGrid', {
extend: 'Ext.ux.LiveSearchGridPanel',
alias: 'widget.inventorylist',
title: 'Inventory List',
store: 'Inventory',
multiSelect: true,
padding: 20,
viewConfig: {
plugins: {
ptype: 'gridviewdragdrop',
dragGroup: 'invtGridDDGroup',
dropGroup: 'stackerGridDDGroup'
},
listeners: {
drop: function (node, data, dropRec, dropPosition) {
var dropOn = dropRec ? ' ' + dropPosition + ' ' + dropRec.get('ordNum') : ' on empty view';
}
}
},
features: [filters],
stripeRows: true,
columns: [{
header: 'OrdNum',
sortable: true,
dataIndex: 'ordNum',
flex: 1,
filterable: true
}, {
header: 'Item',
sortable: true,
dataIndex: 'item',
flex: 1,
filterable: true
}, {
header: 'Pcs',
sortable: true,
dataIndex: 'pcs',
flex: 1,
filterable: true
}]
});
Ext.define('stackerGrid', {
extend: 'Ext.grid.Panel',
alias: 'widget.stackerselect',
title: 'Stacker Select',
store: 'Stacker',
padding: 20,
viewConfig: {
plugins: {
ptype: 'gridviewdragdrop',
dragGroup: 'stackerGridDDGroup',
dropGroup: 'invtGridDDGroup'
},
listeners: {
drop: function (node, data, dropRec, dropPosition) {
var dropOn = dropRec ? ' ' + dropPosition + ' ' + dropRec.get('ordNum') : ' on empty view';
}
}
},
columns: [{
header: 'OrdNum',
dataIndex: 'ordNum',
flex: 1
}, {
header: 'Item',
dataIndex: 'item',
flex: 1
}, {
header: 'Pcs',
dataIndex: 'pcs',
flex: 1
}],
dockedItems: [{
xtype: 'toolbar',
dock: 'bottom',
items: [{
text: 'Submit',
action: 'submit'
}, {
text: 'Reset',
action: 'reset'
}]
}, {
xtype: 'toolbar',
dock: 'top',
items: [{
id: 'combo',
xtype: 'combobox',
queryMode: 'local',
fieldLabel: 'Stacker',
displayField: 'stk',
valueField: 'stk',
editable: false,
store: 'Stackers',
region: 'center',
type: 'absolute'
}]
}]
});
Ext.define('STK.view.scheduler.Scheduler', {
extend: 'Ext.panel.Panel',
alias: 'widget.schedulerview',
title: "Scheduler Panel",
layout: {
type: 'column'
},
items: [{
xtype: 'inventorylist',
width: 650,
height: 600,
columnWidth: 0.5,
align: 'stretch'
}, {
xtype: 'stackerselect',
width: 650,
height: 600,
columnWidth: 0.5
}]
});
回答by lontivero
As I said, Extjs creates getter for your views (those listed in the controller's view array) and you get access to them:
正如我所说，Extjs 为您的视图（在控制器的视图数组中列出的那些）创建 getter，您可以访问它们：
var view = this.getSchedulerSchedulerView();
Once you have the view reference you can do this to get access to the contained grid:
获得视图引用后，您可以执行此操作以访问包含的网格：
var grid = view.down('.inventorylist');
grid.disable();
