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Open only one popup window (panel)

So i have this function onDisplayError which is called each time if request fails. This means if user press save button and 3 request are failing i currently getting 3 popup messages. My goal is that this function checks if my popup window is already opened. If it is then i will append errors in my already opened window otherwise it should open this error popup
onDisplayError: function (response, message) {
var errorPanel = Ext.create('myApp.view.popup.error.Panel',{
shortMessage: message,
trace: response
});
if(errorPanel.rendered == true){
console.log('Do some other stuff');
}else{
errorPanel.show();
}
},
This is Panel.js
Ext.define('myApp.view.popup.error.Panel', {
extend: 'Ext.panel.Panel',
requires: [
'myApp.view.popup.error.PanelController'
],
controller: 'myApp_view_popup_error_PanelController',
title: 'Fail',
glyph: 'xf071#FontAwesome',
floating: true,
draggable: true,
modal: true,
closable: true,
buttonAlign: 'center',
layout: 'border',
shortMessage: false,
width: 800,
height: 200,
initComponent: function() {
this.items = [
this.getMessagePanel(),
this.getDetailsPanel()
];
this.callParent(arguments);
},
getMessagePanel: function() {
if(!this.messagePanel) {
var message = this.shortMessage;
this.messagePanel = Ext.create('Ext.panel.Panel', {
bodyPadding: 5,
height: 200,
region: 'center',
border: false,
html: message
});
}
return this.messagePanel;
},
getDetailsPanel: function() {
if(!this.detailsPanel) {
this.detailsPanel = Ext.create('Ext.panel.Panel', {
title: 'Details',
hidden: true,
region: 'south',
scrollable: true,
bodyPadding: 5,
height: 400,
html: '<pre>' + JSON.stringify(this.trace, null, 4) + '</pre>'
});
}
return this.detailsPanel;
}
The problem is that i'm still getting multiple popups displayed. I think that the problem is that var errorPanel loses reference so it can't check if this popup (panel) is already opened. How to achieve desired effect? I'm working with extjs 6. If you need any additional information's please let me know and i will provide.

You could provide to your component definition a special xtype.
Ext.define('myApp.view.popup.error.Panel', {
extend: 'Ext.panel.Panel',
xtype:'myxtype'
and then you could have a very condensed onDisplayError function:
onDisplayError: function (response, message) {
var errorPanel = Ext.ComponentQuery.query('myxtype')[0] || Ext.widget('myxtype');
errorPanel.appendError(message, response)
errorPanel.show();
},
The panel's initComponent function should initialize an empty window, and appendError should contain your logic to append an error (which may be the first error as well as the second or the third) to the list of errors in the panel.

Using Ext.create will always create a new instance of that class.
You can use the reference config to create a unique reference to the panel.
Then, use this.lookupReference('referenceName') in the controller to check if the panel already exists, and show().
You also have to set closeAction: 'hide' in the panel, to avoid panel destruction on close.
Otherwise, you can save a reference to the panel in the controller
this.errorPanel = Ext.create('myApp.view.popup.error.Panel' ....
Then, if (this.errorPanel) this.errorPanel.show();
else this.errorPanel = Ext.create...

EXTJS Display a View within Ext.window.Window

I am using version 4.2.
I currently have a view which extends a panel. On this panel there is a button which displays a modal window. The controller code when the button is clicked is below (which I pulled from the extjs docs):
displaySearch : function(btn) {
var panel = Ext.create('Ext.window.Window', {
title: 'Hello',
height: 200,
width: 400,
layout: 'fit',
modal : true,
items: {
...
}
}).show();
}
I want a View I already have created to be rendered INSIDE the modal window I just defined.
How do I do that?

If you have defined an alias (xtype) for that view, let's say it is 'myview', then you just add it to items like this:
var panel = Ext.create('Ext.window.Window', {
title: 'Hello',
height: 200,
width: 400,
autoShow:true,
layout: 'fit',
modal : true,
items: [{
xtype:'myview'
}]
});
Also, you don't need to call show() on the created window, it is enough if you configure autoShow:true.

ExtJs extend component issue

I have a extend FormPanel:
Ext.ns('myapp');
myapp.StandartForm = Ext.extend(Ext.FormPanel, {
id: 'myForm'
,xtype: 'test'
,frame:true
,initComponent: function(){
var self = this;
this.editWindow = new Ext.Window({
id: 'editWSWin',
layout: 'fit',
title:this.editPanelTitle,
autoScroll:false,
width:300,
html:'hi'
});
var config = {
items: [{
layout:'column',
items:[this.grid],
buttons: [{
text: 'Edit',
id: "editBtn",
handler: this.editFormCreate,
scope: this,
hidden: this.editbuttonHidden,
disabled:true
}]
}]};
// apply config
Ext.apply(this, config);
Ext.apply(this.initialConfig, config);
myapp.StandartForm.superclass.initComponent.call(this);
}
, editFormCreate : function (){
this.editWindow.show();
}
});
Ext.reg(myapp.StandartForm.prototype.xtype, myapp.StandartForm);
In this panel i press button Edit and window showing. After i close window and press Edit button again but get error:
TypeError: b.dom is undefined
I think it's mean that my window undifined.
How can i extend FormPanel to be able use window correctly?
UPDATE
function to create window:
function test(){
var editWindow = new Ext.Window({
id: 'editWSWin',
layout: 'fit',
title:this.editPanelTitle,
autoScroll:false,
width:300,
html:'hi'
});
return editWindow
}
and call it:
, editFormCreate : function (){
test.show();
}
But its undifined.

When you close the window, it gets destroyed, so you can't show it again. You need to either:
Set the closeAction property on the window
Create the window inside editFormCreate each time

When you close a Ext.Window, you dispose of the DOM elements it creates so there is nothing to show anymore. You need to instantiate a new one before showing it in this case.

extjs displaying loadmask on panel when store loads

I added a loadmask to a panel and I want the spinner to be displayed each time stores associated with the loadmask are loaded. The panel is a large tooltip and the stores are loaded each time a point is visited in a line chart. Thus, when I hover over a point, I'm expecting a load message to appear for a short period of time before I see the contents in the panel. What I'm getting is an empty panel however. If I remove the code that I have which adds the load mask (the initComponent function), it works (without the load message though). How would I use the loadmask in this manner as opposed to explicitly calling the setLoading() method for each panel?
Here's the code:
tips:
{
...
items:{
xtype: 'panel',
initComponent: function(){
var loadMask = new Ext.LoadMask(this, {
store: Ext.getStore('CompanyContext')
});
},
id: 'bar-tip-panel',
width: 700,
height: 700,
layout: {
type: 'accordion',
align : 'stretch',
padding: '5 5 5 5'
},
items:...
}
}

config object isn't the proper place to override initComponent method. What you should do is to define a subclass of Panel, and override the method there.
Ext.define('MyPanel', {
extend: 'Ext.panel.Panel',
xtype: 'mypanel',
initComponent: function() {
this.callParent(arguments); // MUST call parent's method
var loadMask = new Ext.LoadMask(this, {
store: ...
});
},
});
Then, you can use xtype mypanel in your tips configuration.

how to load mask while the grid is double clicked to wait for the detail window

forum member I am having one problem while using the loadMask property of the extjs 4.0.2a. Actually I am having one grid which on click open the window with detail information.
As my detail window takes more time to come on screen, so I just decided to make use of the loadMask property of Extjs. But don't know why the loading message is not shown when I double click the grid row and after some time the detail window is shown on the screen.
on grid double click I am executing the below code
projectEditTask: function(grid,cell,row,col,e) {
var myMask = new Ext.LoadMask(Ext.getBody(), {msg:"Loading.."});
myMask.show();
var win = this.getProjectGanttwindow();
win.on('show', myMask.hide, myMask);
}
but don't know the loading is not displayed and after waiting for some moment my window is shown correctly.
I just want when I double click the grid Loading message should be displayed and after when the window is load completely Loading message should be dissapear and detail window should be viewed.
when I made the changes as per you said the loading message is displayed but my window is not opened yet. below is the code of window I am trying to open
my projectGanttwindow is
Ext.define('gantt.view.projectmgt.projectGanttwindow' ,{
extend: 'Ext.window.Window',
alias : 'widget.projectganttwindow',
requires: ['gantt.view.projectmgt.projectGanttpanel'],
editform:1,
id: 'projectganttwindow',
title: 'Project Management',
width: '100%',
height: '100%',
closeAction: 'destroy',
isWindow: true,
flex:1,
isModal: true,
constrain: true,
maximizable: true,
stateful: false,
projectId: null, // this will be set before showing window
listeners: {
hide: function() {
alert('hide');
//var store = Ext.data.StoreManager.lookup('taskStore').destroyStore();
//Ext.destroy(store);
//store.destroyStore();
console.log('Done destroying');
}
},
initComponent: function() {
var me = this;
me.layoutConfig = {
align: 'stretch'
};
me.items = [{
xtype: 'projectganttpanel',
allowBlank: false
}];
me.callParent(arguments);
me.on({
scope: me,
beforeshow: me.onBeforeShow
});
},
onBeforeShow: function() {
var projectId = this.projectId;
console.log('BEFOR SHOW ::'+projectId);
if(projectId != null) {
var store = Ext.data.StoreManager.lookup('taskStore');
store.load({
params: {'id': projectId}
});
}
}
});

Try this
function loadMask(el,flag,msg){
var Mask = new Ext.LoadMask(Ext.get(el), {msg:msg});
if(flag)
Mask.show();
else
Mask.hide();
}
When u click on grid call this function
//Enable mask message
loadMask(Ext.getBody(),'1','Please wait...');
After pop loaded call
//Disable mask Message
loadMask(Ext.getBody(),'','Please wait...');