I have a TabPanel with a Tabbar and four panels inside. I want to load the HTML content for the fourth panel with an AJAX call when the panel becomes visible.
The AJAX function fetches the data from the server and places it inside the panel, which uses the panel update function. The problem is how to call this function when the panel becomes visible. A simplified version is:
Pages.Contact = new Ext.Panel({
title: 'Contact',
html: 'test data',
iconCls: 'user',
cls: 'cHome',
activate: function () {
Pages.Contact.update("my ajax data");
}
});
When I go to my panel the body content is not affected. Does anyone know what goes wrong here? I've already tried to replace activate with render and show.
To add event's listeners you need to do
listeners: {
activate: function(){
console.log('activate fired');
}
},
But that's not the event you want to listen. It's better to listen for beforecardswitch on the TapPanel object, example:
listeners: {
beforecardswitch:function(newCard, oldCard, index, anim){
if(index == 3){
//loadJson and update card.
// you may want to use this also
newCard.setLoading(true);
//and after the json request has finished set it to false.
}
}
},
The solution was to use:
beforecardswitch:function(object, newCard, oldCard, index, anim) {
As shown by Ilya139 by with the object parameter as first parameter.
Then the index variable returns the correct cardnumber.
Related
I am new to Extjs,I create a grid panel in extjs, with toolbar. I give a add button, in controller the button name is given. in view, i create a tool bar in create function, not in define. Using alias i create one name also, by using that widget name i used to call in controller, by using button action value give thew function foropen a new, but it notworking. If i use panel within init function in view part means it will not disply any panels.
and my coding is
Ext.create('Ext.toolbar.Toolbar', {
alias : 'widget.toolbar',
renderTo: document.body,
items: [
{
itemId : 'addtab',
text: 'Add',
iconCls: 'add',
action: 'addtab'
}]
})
this is the view part. action here i given as addtab
and my controller is
init: function() {this.control({
'toolbar button[itemId=grid-add]': {
click: function(){
top.addTab(true,"../medias/add","Media","common",0,'add');
}
}
})
button is working.. and my add page is also working fine. but the calling function that is cal by alias is not working. can anyone give the solution.
i want to give the function in controller file only.
thank you..
I am trying to create a universal titlebar with a back button for my application. I am including it in the various views by using {xclass:mUserStories.view.titlebar}.
Here is the code for the titlebar:
Ext.define('mUserStories.view.titlebar', {
extend: 'Ext.TitleBar',
id: 'narwhal',
config: {
docked: 'top',
// id: 'narwhal',
title: 'CHW Module',
items: [{
ui: 'back',
text: 'Back',
id: 'backButton'
// hidden: true
}]
}
})
However, when I try to dynamically change the toolbar when switching to different pages, the console.log of the titlebar says the _title has changed but the text on the titlebar and the "hidden" property of the button does not change.
Here is the code for the logic that occurs when the button is pressed to switch the page:
toPage: function (arg) {
var t = Ext.getCmp('narwhal');
var b = Ext.getCmp('backButton');
console.log(t,b)
if (arg === PAGES.PATIENT_LIST) {
t.setTitle('Patient List');
b.setHidden(true)
}
Ext.getCmp('viewPort').setActiveItem(arg);
}
I have also tried to include a ref at the top for Narwhal : '#narwhal' and use var t = this.getNarwhal(), but this does not work either.
I am not sure if the problem lies with where the id is being kept, how the id is being called, or because the page is not refreshing properly. Any advice would help!
Thank you for your time :)
I have had the same situation in my project.
I managed to get everything to work like you want it by having a controller owning a reference to the title bar and listening to activeItemChange on my tabPanel.
I'm using extjs4 and I'm trying to create a tab panel, that each tab has a different grid that loads data from a store. (each grid different store)
I would like to load the particular store only when the user clicks on the respective tab.
I don't see how I can catch the user click on the panel.
How I can do that?
I had a similar performance loading issue and failed to solve it with deferredRender. You have to add the event activate for the tab you want to load when the tab is activated :
{
title: 'tab2',
bodyPadding: 10,
html : 'A simple tab',
listeners: {
'activate' : function(){
store2.load();
},
}
}
Worked fine for me even if it's a temporary solution. Extjs 4.1 should improve loading/rendering performances. We'll see.
You can activate the panel by placing setActiveItem() in tab handler.
Ok, I figured out, I just needed to have deferredRender=true and to add the respective store.load() on the beforerender event on every tab:
var lowerTabPanel = Ext.create('Ext.tab.Panel', {
deferredRender: true,
items: [
{
title: 'tab1',
bodyPadding: 10,
html : 'A simple tab',
listeners: {
'beforerender' : function(){
store1.load();
},
}
},
{
title: 'tab2',
bodyPadding: 10,
html : 'A simple tab',
listeners: {
'beforerender' : function(){
store2.load();
},
}
},
]
});
Ext.TabPanel has config option deferredRender. May be it helps you.
Documentation:
true by default to defer the rendering of child items to the browsers DOM until a tab is activated. false will render all contained items as soon as the layout is rendered. If there is a significant amount of content or a lot of heavy controls being rendered into panels that are not displayed by default, setting this to true might improve performance.
Update: Also look at autoLoad config option in Ext.data.JsonStore, it should be false.
i have a panel which should show the "description" field of "currently activeitem of nestedlist". nestedlist uses the model having fields:
id
text
description
when user taps on any item of nestedList [on selectionchange OR itemtap&backtap], i want to change description in the panel with description of "currently activeItem of nestedList".
Is this possible?
thanks for any help/solution/pointer.
The same problem I had today, and no solution had been found with a nested list, because no single field can be taken from a Ext.data.TreeStore. One solution could be that you have lots of "if-function 'do with all the ID's and then you give each ID a text. But that's not good.
I've decided to make a simple list.
if you want I can show you my solution for the simple list
ps.: I use Sencha Touch 1.1
Update:
NotesApp.views.NaviList = new Ext.List({
fullscreen: true,
flex: 1,
layout: 'card',
scroll: false,
useToolbar: false,
itemTpl: '{text}',
store: store,
listeners: {
itemtap: function (obj, idx, el, e) {
var record = this.store.getAt(idx);
var tle = record.get('text');
index = record.get('index');
NotesApp.views.notesListContainer.setActiveItem(index, { type: 'slide', direction: 'left' });
}
}
}
});
description:
My App has the name: "NotesApp".
"notesListContainer" is a Container where all my List are displayed. "index" is an ID that I get from the store and the calls list.
Now when you tap on my NaviList you set a new ActiveItem in this Container.
thanks a lot for the reply. I also tried using simple list with one Ext.button(back button in case of nestedlist). On itemtap and buttonclink, i change list's content by
var t = new Ext.data.Store and list.setStore(t).
Please let me know if there is any other better option to do it.
How do you make a titlePane's height dynamic so that if content is added to the pane after the page has loaded the TitlePane will expand?
It looks like the rich content editor being an iframe that is loaded asynchronously confuses the initial layout.
As #missingno mentioned, the resize function is what you want to look at.
If you execute the following function on your page, you can see that it does correctly resize everything:
//iterate through all widgets
dijit.registry.forEach(function(widget){
//if widget has a resize function, call it
if(widget.resize){
widget.resize()
}
});
The above function iterates through all widgets and resizes all of them. This is probably unneccessary. I think you would only need to call it on each of your layout-related widgets, after the dijit.Editor is initialized.
The easiest way to do this on the actual page would probably to add it to your addOnLoad function. For exampe:
dojo.addOnLoad(function() {
dijit.byId("ContentLetterTemplate").set("href","index2.html");
//perform resize on widgets after they are created and parsed.
dijit.registry.forEach(function(widget){
//if widget has a resize function, call it
if(widget.resize){
widget.resize()
}
});
});
EDIT: Another possible fix to the problem is setting the doLayout property on your Content Panes to false. By default all ContentPane's (including subclasses such as TitlePane and dojox.layout.ContentPane) have this property set to true. This means that the size of the ContentPane is predetermined and static. By setting the doLayout property to false, the size of the ContentPanes will grow organically as the content becomes larger or smaller.
Layout widgets have a .resize() method that you can call to trigger a recalculation. Most of the time you don't need to call it yourself (as shown in the examples in the comments) but in some situations you have no choice.
I've made an example how to load data after the pane is open and build content of pane.
What bothers me is after creating grid, I have to first put it into DOM, and after that into title pane, otherwise title pane won't get proper height. There should be cleaner way to do this.
Check it out: http://jsfiddle.net/keemor/T46tt/2/
dojo.require("dijit.TitlePane");
dojo.require("dojo.store.Memory");
dojo.require("dojo.data.ObjectStore");
dojo.require("dojox.grid.DataGrid");
dojo.ready(function() {
var pane = new dijit.TitlePane({
title: 'Dynamic title pane',
open: false,
toggle: function() {
var self = this;
self.inherited('toggle', arguments);
self._setContent(self.onDownloadStart(), true);
if (!self.open) {
return;
}
var xhr = dojo.xhrGet({
url: '/echo/json/',
load: function(r) {
var someData = [{
id: 1,
name: "One"},
{
id: 2,
name: "Two"}];
var store = dojo.data.ObjectStore({
objectStore: new dojo.store.Memory({
data: someData
})
});
var grid = new dojox.grid.DataGrid({
store: store,
structure: [{
name: "Name",
field: "name",
width: "200px"}],
autoHeight: true
});
//After inserting grid anywhere on page it gets height
//Without this line title pane doesn't resize after inserting grid
dojo.place(grid.domNode, dojo.body());
grid.startup();
self.set('content', grid.domNode);
}
});
}
});
dojo.place(pane.domNode, dojo.body());
pane.toggle();
});
My solution is to move innerWidget.startup() into the after advice to "toggle".
titlePane.aspect = aspect.after(titlePane, 'toggle', function () {
if (titlePane.open) {
titlePane.grid.startup();
titlePane.aspect.remove();
}
});
See the dojo/aspect reference documentation for more information.