我为弹出窗口中的按钮添加了一个监听器onParentPagePopupCommit，该按钮在父视图控制器中声明并在视图端口中添加了弹出窗口，现在视图模型绑定正在按预期工作，但不确定如何调用父视图控制器方法，而不在子视图控制器中公开相同的方法名称。有没有办法在运行时在ExtJs Modern 6.5中扩展View Controller。
onShowChildPopup: function (sender) {
var popup = sender.up('panel').popups['childPopup'],
pageCtrler = sender.lookupController(),
pageVM = pageCtrler.getViewModel(),
page = pageCtrler.getView(),
popupCtrler = new Ext.app.ViewController({
parent: pageCtrler, //setting parent ctrler
//popup commit event on popup view controller
onPopupCommit: function () {
debugger;
Ext.Msg.alert("Popup Update", "Popup View Controller Invoked")
console.log("popup view controller - commit");
},
// this works but any other way
// same methods name on popup view ctrler...
/*onParentPagePopupCommit: function(){
debugger;
// I don't like this way of invoking a parent method
// this may introduce few more bugs if the parent gets value from its own
// view model - (this will be parent vm and not child/popup.)
// need something similar to extend inorder to reuse certain methods..
this.parent.onParentPagePopupCommit();
var vm = this.getViewModel().get('vm');
vm.set('fullName',this.getFullName());
}*/
}),
popupVM = new Ext.app.ViewModel({
parent: pageVM, //setting parent view model
links: {
//vm is not merging with parent
//vm: {
childvm: {
reference: 'ChildModel',
create: {
address: "child Address",
phone: "child Phone"
}
}
}
});
popup.controller = popupCtrler;
popup.viewModel = popupVM;
popup = Ext.create(popup);
popup.setShowAnimation({
type: 'slideIn',
duration: 325,
direction: 'up'
});
popup.setHideAnimation({
type: 'slideOut',
duration: 325,
direction: 'down'
});
popup.setCentered(true);
/* popup.on('show', function () {
debugger;
});*/
Ext.Viewport.add(popup).show();
//popup.showBy(page, "c-c");
}
答案 0 :(得分：2)
为此，您需要在extend中使用controller配置。
例如：
Ext.define('Person', {
say: function(text) { alert(text); }
});
Ext.define('Developer', {
extend: 'Person',
say: function(text) { this.callParent(["print "+text]); }
});
在 FIDDLE 中，我使用您的代码创建了一个演示并进行了一些修改。我希望这有助于或指导您实现您的要求。
代码段
Ext.define('ParentModel', {
extend: 'Ext.data.Model',
alias: 'model.parentmodel',
fields: [{
name: 'firstName',
type: 'string'
}, {
name: 'lastName',
type: 'string'
}, {
name: 'address',
type: 'string'
}]
});
Ext.define('ChildModel', {
extend: 'Ext.data.Model',
alias: 'model.childmodel',
fields: [{
name: 'address',
type: 'string'
}, {
name: 'phone',
type: 'number'
}, {
name: 'fullName',
type: 'string'
}]
});
Ext.define('PageViewModel', {
extend: 'Ext.app.ViewModel',
alias: 'viewmodel.pageviewmodel',
links: {
vm: {
reference: 'ParentModel',
create: {
firstName: 'firstName-ParentVM',
lastName: 'lastName-ParentVM'
}
}
}
});
Ext.define('PageViewController', {
extend: 'Ext.app.ViewController',
alias: 'controller.pageviewcontroller',
init: function () {
this.callParent(arguments);
},
//i understand fullname can also be done on model using formula/conver
//this is just a sample
getFullName: function () {
var vm = this.getViewModel().get('vm');
return vm.get('firstName') + " " + vm.get('lastName');
},
//popup commit event on parent view controller
onParentPagePopupCommit: function (button) {
var vm = button.up('formpanel').getViewModel().get('vm');
vm.commit();
Ext.Msg.alert("Parent Page Update", "Parent View Controller Invoked");
console.log("Page view controller - commit");
},
onShowChildPopup: function (button) {
var popup = button.up('panel').popups['childPopup'],
pageCtrler = button.lookupController(),
pageVM = pageCtrler.getViewModel(),
page = pageCtrler.getView(),
popupVM = new Ext.app.ViewModel({
parent: pageVM, //setting parent ViewModel
links: {
//vm is not merging with parent
//vm: {
childvm: {
reference: 'ChildModel',
create: {
address: "child Address",
phone: "child Phone"
}
}
}
});
popup.viewModel = popupVM;
popup = Ext.create(popup);
popup.setShowAnimation({
type: 'slideIn',
duration: 325,
direction: 'up'
}).setHideAnimation({
type: 'slideOut',
duration: 325,
direction: 'down'
}).setCentered(true);
Ext.Viewport.add(popup).show();
}
});
//Need to extend popup controller from PageViewController(parent)
Ext.define('PopupViewController', {
extend: 'PageViewController',
alias: 'controller.popupviewcontroller',
//popup commit event on popup view controller
onPopupCommit: function () {
Ext.Msg.alert("Popup Update", "Popup View Controller Invoked")
console.log("popup view controller - commit");
}
});
Ext.define('MainPage', {
extend: 'Ext.Panel',
config: {
title: 'Page',
width: '100%',
height: '100%',
layout: {
type: 'vbox',
align: 'stretch'
}
},
viewModel: {
type: 'pageviewmodel'
},
controller: {
type: 'pageviewcontroller'
},
width: '100%',
height: '100%',
popups: {
childPopup: {
xtype: 'formpanel',
controller: 'popupviewcontroller',
title: 'Cild Popup',
floating: true,
modal: true,
hideonMaskTap: true,
layout: 'float',
minWidth: 300,
maxHeight: 580,
tools: [{
type: 'close',
handler: function () {
var me = this.up('formpanel');
me.hide();
}
}],
items: [{
xtype: 'container',
layout: {
type: 'vbox',
align: 'stretch',
pack: 'center'
},
items: [{
xtype: 'fieldset',
items: [{
xtype: 'label',
bind: {
html: '{vm.firstName} {vm.lastName}'
}
}, {
xtype: 'textfield',
label: 'First Name',
name: 'firstName',
bind: {
value: '{vm.firstName}'
}
}, {
xtype: 'textfield',
label: 'Last Name',
name: 'lastName',
bind: {
value: '{vm.lastName}'
}
}, {
xtype: 'textfield',
label: 'Last Name',
name: 'lastName',
bind: {
//value: '{vm.address}'
value: '{childvm.address}'
}
}]
}, {
xtype: 'container',
docked: 'bottom',
layout: 'hbox',
items: [{
xtype: 'button',
text: 'Popup Update',
handler: 'onPopupCommit'
}, {
xtype: 'button',
text: 'Parent Update',
handler: 'onParentPagePopupCommit'
}]
}]
}]
}
},
bodyPadding: 10,
items: [{
xtype: 'fieldset',
title: 'Enter your name',
items: [{
xtype: 'textfield',
label: 'First Name',
name: 'firstName',
bind: {
value: '{vm.firstName}'
}
}, {
xtype: 'textfield',
label: 'Last Name',
name: 'lastName',
bind: {
value: '{vm.lastName}'
}
}]
}, {
xtype: 'button',
text: 'Show Popup',
handler: 'onShowChildPopup'
}]
});
Ext.application({
name: 'Fiddle',
launch: function () {
Ext.Viewport.add(Ext.create('MainPage'));
}
});