How can I get my application from a view?
For example consider I have an application Boo and there's a view that named Boo.view.Foo.List and I want to get Boo in the view List.
Edit:
See this code, and look at the line 20.
Ext.define('Boo.view.Foo.List', {
extend: 'Ext.panel.Panel',
model: 'Boo.model.FooModel',
alias: 'widget.foolist',
store: 'FooListStore',
initComponent: function () {
this.columns = [
{
text: "Hello world",
dataIndex: 'Time',
flex: 1
},
{
xtype: 'actioncolumn',
width: 50,
items: [{
icon: 'cancel.png',
tooltip: 'Cancel',
handler: function (grid, rowIndex, colIndex, col, e) {
//Now I need to get the application here, for example with self.getApplication() or something like this.
}
}]
}];
this.callParent(arguments);
}
});
You can archieve this using the appProperty
Ext.application({
name: 'MyApp',
appProperty: 'Current'
});
You can now call
MyApp.Current
from anywhere cause the MyApp namespace resist within the window (global) scope.
For any Version before 4.1.3 add the following line to the Launch-Method of the Application
YourAppName[this.appProperty] = this;
Related
Suppose we have defined a component (e.g. FieldSet) that we'd like to reuse in the single app (e.g. display/use it in 2 different modal windows.) This FieldSet has a reference, which we use to access it. The goal is to have these 2 windows contain independent fieldsets, so we can control and collect the inputs from each one separately.
Here's the sample fiddle that demonstrates the problem. As soon as any function triggers any lookupReference(...) call, Sencha issues the warning for "Duplicate reference" for the fieldset. It correctly creates two distinct fieldset components (by assigning different ids) on each window, but fails to properly assign/locate the references. As a result, any actions on one of these windows' fieldsets would be performed on the "unknown" one (probably on the first created one), messing up the UI behavior.
I see how it is a problem for Sencha to understand which component to use when operating on the reference, but there should be a way to reuse the same component multiple times without confusing the instances. Any help is greatly appreciated.
According to the docs on ViewController:
A view controller is a controller that can be attached to a specific view instance so it can manage the view and its child components. Each instance of the view will have a new view controller, so the instances are isolated.
This means that your use of singleton on your ViewController isn't correct, as it must be tied to a single view instance.
To fix this, I'd recommend making some modifications to your Fiddle, mainly removing the singleton: true from your VC class, accessing the views through lookup, and getting their VC's through getController to access your func method.
Ext.application({
name: 'Fiddle',
launch: function () {
/**
* #thread https://stackoverflow.com/questions/67462770
*/
Ext.define('fsContainerHandler', {
extend: 'Ext.app.ViewController',
alias: 'controller.fsContainerHandler',
// TOOK OUT singleton: true
func: function () {
var x = this.lookupReference('fsRef');
alert(x);
}
});
Ext.define('fsContainer', {
extend: 'Ext.container.Container',
xtype: 'xFSContainer',
controller: 'fsContainerHandler',
items: [{
xtype: 'fieldset',
title: 'myFieldset',
reference: 'fsRef'
}]
});
Ext.define('mainContainerHandler', {
extend: 'Ext.app.ViewController',
alias: 'controller.mainContainerHandler',
singleton: true,
onButton1Click: function () {
var win = this.getView().window1;
win.show();
// CHANGED LOGIC
win.lookup('theContainer').getController().func();
},
onButton2Click: function () {
var win = this.getView().window2;
win.show();
// CHANGED LOGIC
win.lookup('theContainer').getController().func();
}
});
Ext.define('mainContainer', {
extend: 'Ext.container.Container',
width: 400,
controller: 'mainContainerHandler',
window1: null,
window2: null,
initComponent: function () {
this.window1 = Ext.create('window1');
this.window2 = Ext.create('window2');
this.callParent(arguments);
},
items: [{
xtype: 'button',
text: 'Window 1',
reference: 'btn1',
handler: mainContainerHandler.onButton1Click,
scope: mainContainerHandler
}, {
xtype: 'button',
text: 'Window 2',
reference: 'btn2',
handler: mainContainerHandler.onButton2Click,
scope: mainContainerHandler
}]
});
Ext.define('window1', {
extend: 'Ext.window.Window',
title: 'Window1',
modal: true,
width: 100,
height: 100,
closeAction: 'hide',
// ADDED referenceHolder
referenceHolder: true,
items: [{
xtype: 'xFSContainer',
// ADDED reference
reference: 'theContainer'
}]
});
Ext.define('window2', {
extend: 'Ext.window.Window',
title: 'Window2',
modal: true,
width: 100,
height: 100,
closeAction: 'hide',
// ADDED referenceHolder
referenceHolder: true,
items: [{
xtype: 'xFSContainer',
// ADDED reference
reference: 'theContainer'
}]
});
Ext.create('mainContainer', {
renderTo: document.body
});
}
});
I have a Window class like this:
Ext.define('EMS.tf.alerts.alerts.view.AlertWindow', {
extend: 'Ext.window.Window',
alias: 'widget.ems-alerts-window',
height: 220,
width: 600,
alertTpl: undefined,
autoScroll: true,
selectedRecord: undefined,
title: undefined,
atext: undefined,
// #private
initComponent: function() {
var me = this;
Ext.apply(me, {
tpl: me.alertTpl,
listeners: {
show: function() {
Ext.create('Ext.Container', {
renderTo: 'alertContainer',
itemId: 'buttonContainer',
items : [{
xtype: 'button',
cls: 'ackbtn',
text : 'Acknowledge',
name: 'ackButton',
itemId: 'renderbutton'
},{
xtype: 'button',
cls: 'attchmntbtn',
text : 'Attachment',
name: 'attButton',
itemId: 'renderattachmntbutton'
}]
});
}
},
title: me.title
});
me.callParent();
}
});
I want to get reference to button "Attachment" using itemId "renderattachmntbutton". How to do this?
I tried windowobject.down('#renderattachmntbutton') but still it didn't work. I can get reference to the items placed before init function but not like this. Any idea on what needs to be done to get reference to this button?
That button is not an item (a child) of the window but of the button container. If you want to find it with down then you need to grab a reference to the container and call down on that.
Instead of
windowobject.down('#renderattachmntbutton') // WRONG
call
buttoncontainer.down('#renderattachmntbutton') // Correct
Try this
Ext.ComponentQuery.query('[itemId=renderattachmntbutton]')[0]
The itemId can be used with the getComponent() call on parent items, like container and panels. If you change your itemId on your container to just an id property. You can then get to your child items like so:
Ext.getCmp('buttonContainer').getComponent('renderattachmntbutton');
This is just one possible way, there are others!
You could try
windowobject.down('[itemId=renderattachmntbutton]') ;
My ExtJS button's handler is not invoked after clicking. Now the code looks like this.
Ext.define('EDS.view.selector.Container', {
extend: 'Ext.form.Panel',
alias : 'widget.selectorcontainer',
title: 'Selector_V2',
renderTo: 'input-div',
layout: 'fit',
height: '100%',
items: [
{
xtype: 'tabpanel',
defaults: {
bodyPadding: 10
},
}
],
buttons: [
{
text: 'Reset',
handler: function(){
console.log("Reset");
this.up('form').getForm().reset();
}
},
{
text: 'Add to constrain',
handler: this.addConstrain,
}
],
/*
* Logic for button "Add to constrain"
*
* Adds an entry into the constrain list describing a person, cost center or an application
*/
addConstrain: function(button, event){
console.log('Add_to_constrain clicked');
}
});
Originally this 'selectorcontainer' was put diretly in my app.js. But I extracted it into a stand-alone view. Before the extraction, it works perfect but now it is not working.
BTW, I've two buttons and the first "reset" works fine. So I'm wondering if there's anything wrong with "this.addConstrain" related to scoping.
You're right, it is a scoping issue - this is not the class you're defining; it's the scope at the time the Ext.define function is called (likely window). There are a few ways to handle this. The easiest (in my opinion) is to change your handler to work similarly to your reset handler:
{
text: 'Add to constrain',
handler: function(btn, e) {
//'this' is now the button
this.up('selectorcontainer').addConstrain(btn, e);
}
}
You could also add the buttons as part of the initComponent function instead of defining them as part of the Ext.define config.
initComponent: function() {
//'this' is now the selector container
this.buttons = [{
text: 'Reset',
handler: function(){
console.log("Reset");
this.up('form').getForm().reset();
}
}, {
text: 'Add to constrain',
handler: this.addConstrain
}];
this.callParent();
}
The proper way to design your class is like this. You apply your config settings to the object before you do the callParent.
Ext.define('EDS.view.selector.Container', {
extend: 'Ext.form.Panel',
alias : 'widget.selectorcontainer',
title: 'Selector_V2',
renderTo: 'input-div',
layout: 'fit',
height: '100%',
initComponent: function() {
Ext.applyIf(this, {
items: [
{
xtype: 'tabpanel',
defaults: {
bodyPadding: 10
}
}
],
buttons: [
{
text: 'Reset',
scope: this, // <--- scope to form panel
handler: function(){
console.log("Reset");
this.getForm().reset();
}
},
{
text: 'Add to constrain',
scope : this, // <--- scope to form panel
handler: this.addConstrain
}
]
});
this.callParent(arguments);
}
/*
* Logic for button "Add to constrain"
*
* Adds an entry into the constrain list describing a person, cost center or an application
*/
addConstrain: function(button, event){
console.log('Add_to_constrain clicked');
}
});
I'm struggling with getting references and not using Ext.getCmp(..). I understand why it is best not to use Ext.getCmp in production apps, primarily because of potential confusion around duplicated DOM id's. I've create a basic sample below that I've put some comments in that I'm hoping, if I can find answers to will help me better understand how to get references.
I'm also looking for some really good explanations, tutorials, etc on this topic. I gather that learning how to do ComponentQuery's would be best but I'm not even sure if that is the case. So without further words, here the code. Please take a look at button event in pop up window for what I'm hoping to figure out.
Ext.define('MyApp.view.MyViewport', {
extend: 'Ext.container.Viewport',
layout: {
type: 'border'
},
initComponent: function () {
var me = this;
Ext.applyIf(me, {
items: [{
xtype: 'panel',
flex: 2,
region: 'center',
title: 'My Panel',
dockedItems: [{
xtype: 'toolbar',
dock: 'top',
items: [{
xtype: 'button',
text: 'MyButton',
listeners: {
click: {
fn: me.onButtonClick,
scope: me
}
}
}]
}],
items: [{
xtype: 'component',
html: '<b>my component</b>'
}]
}]
});
me.callParent(arguments);
},
onButtonClick: function (button, e, eOpts) {
Ext.define('MyApp.view.MyWindow', {
extend: 'Ext.window.Window',
height: 250,
width: 400,
title: 'My Window',
initComponent: function () {
var me = this;
Ext.applyIf(me, {
items: [{
xtype: 'button',
text: 'Want to get link to my component in window that opened this',
listeners: {
click: {
fn: me.onButtonClick,
scope: me
}
}
}]
});
me.callParent(arguments);
},
onButtonClick: function (button, e, eOpts) {
// I would like to set the html property of the
// component in the window below
// I would like to do this efficintly
// user itemId?
// use componentquery?
// use up/down/etc.
//
// Need help with componentquery, extjs help is not helpful for me
// I need more basics I think.
this.up('panel').up('panel').down('component').html = '<i>set from button</i>';
console.log(this.up('panel').up('panel').down('component'));
}
});
var win = Ext.create('MyApp1.view.MyWindow', {});
win.show();
}
});
Windows are floating so you cant use up to get back to your viewport. Likewise, you can't use down in your viewport to find any components in windows. Your outer onButtonClick method is called in the scope of the viewport. If you save off a reference to this at that point, you can use it with down to grab your component.
onButtonClick: function() {
var viewport = this;
Ext.define('YourWindow', {
// setup everything
onButtonClick: function() {
// this may not return what you want since everything
// else inside the viewport is technically also a component
// You'd be better off adding an itemId to the component
// you wish to grab and using that in the call to down.
console.log(viewport.down('component'));
}
});
// show window
}
On a side note, I'm not sure that you want to be defining your window class on button click. Unless you can guaranty that the button will only ever be clicked once, you should define your class elsewhere and just create the window in the click handler. That complicates getting a reference to the viewport, but you could easily set it as a property on the window when you create it, or just add the onButtonClick method in the window's configuration object.
I have got the tabpanel - it's the main form (view).
In this tabpanel I define the different tabs - xtype:'panel'.
So, I have one main(controller) , main view and some tabs views.
The tab's views are referenced in main view.
I want to define listener of activate event of some child's panel in main controller.
How can I do that?
the main controller :
Ext.define('KP.controller.account.apartment.Main', {
extend: 'Ext.app.Controller',
views: ['account.apartment.Main',
'account.apartment.Requisites'
],
models: ['account.apartment.Requisites'
],
stores: ['account.apartment.Requisites'
],
init: function () {
}
});
The main view:
Ext.define('KP.view.account.apartment.Main', {
extend: 'Ext.window.Window',
alias: 'widget.ApartmentData',
height: 566,
width: 950,
activeItem: 0,
layout: {
type: 'fit'
},
autoShow: false,
initComponent: function() {
var me = this;
Ext.applyIf(me, {
items: [
{
xtype: 'tabpanel',
activeTab: 0,
deferredRender: true,
items: [
{
xtype: 'RequisitesApartment'
}
]
}
]
});
me.callParent(arguments);
}
});
The child panel RequisitesApartment (view):
Ext.define('KP.view.account.apartment.Requisites', {
extend: 'Ext.panel.Panel',
alias: 'widget.RequisitesApartment',
id: 'panel_accountrequisites',
height: 350,
width: 1124,
autoScroll: true,
layout: {
type: 'fit'
},
listeners: {
activate: function () {
....load data....
...this listeners I want to push in 'main' controller...
}
},
initComponent: function () {
var me = this;
var grid_store = Ext.create('KP.store.account.apartment.Requisites');
Ext.applyIf(me, {
dockedItems: [
{
xtype: 'gridpanel',
height: 260,
autoScroll: true,
dock: 'bottom',
store: grid_store,
id: 'r_gridFlatParams',
forceFit: true,
columns: [
...some columns....
],
viewConfig: {
}
}
]
});
me.callParent(arguments);
}
});
Register it directly as control within the responsible controller
Here is a example with a working query. For sure you just will need the query, but I think it's a good example. The custom cfg property ident make it easy find each tab. As in the example below you will have specify a tabConfig within each panel and define the ident there.
Ext.create('Ext.tab.Panel', {
width: 400,
height: 400,
renderTo: document.body,
items: [{
title: 'Foo',
tabConfig: {
ident: 'foo'
},
}, {
title: 'Bar',
tabConfig: {
ident: 'bar',
title: 'Custom Title',
tooltip: 'A button tooltip'
}
}]
});
console.log(Ext.ComponentQuery.query('tabpanel tabbar tab[ident=foo]')[0]);
console.log(Ext.ComponentQuery.query('tabpanel tabbar tab[ident=bar]')[0]);
Another way is to use css id's which can be queried like '#my-name' but I recommend to use a custom one as in the example above
Well, I should put this code in 'main'(controller):
this.control({
'ApartmentData tabpanel RequisitesApartment': {
activate: function () {
console.log('hello!');
}
}
});
The problem was in wrong selector , that I used.
The correct selector is :
'ApartmentData tabpanel RequisitesApartment'
There 'ApartmentData'(define like a alias: 'widget.ApartmentData') - is the 'window' xtype -the main form.
tabpanel - panel with tabs in 'window', and 'apartServList'(define like alias: 'widget.RequisitesApartment') - the some panel.
Thanks for sra!
the correct thing to do is to pass a config object to the member function control into controller init function. From Sencha documentation : The control function makes it easy to listen to events on your view classes and take some action with a handler function.
A quick example straight from extjs docs:
Ext.define('MyApp.controller.Users', {
extend: 'Ext.app.Controller',
init: function() {
this.control({
'viewport > panel': {
render: this.onPanelRendered
}
});
},
onPanelRendered: function() {
console.log('The panel was rendered');
}
});
Hope this helps.
Cheers