Sencha Touch 2 carousel.setItems() not working - sencha-touch-2

I am trying to build a dynamic image carousel using Sencha Architect. I have a carousel added to a tab panel. The carousel is set up to read images from a store called "pictureStore." I have a function to pull images from the store and create the carousel items - I can get the images from the store but unable to create the carousel. When I try to use carouself.setItems() or carousel.add() I get an error "Object # has no method". Please take a look and let me know if my method is incorrect for creating a dynamic carousel. I appreciate your help and knowledge of how to fix
Thanks,
Function to read images and create carousel items (works up until comment below):
onMycarouselActivate: function(container, newActiveItem, oldActiveItem, options) {
Ext.getStore('pictureStore').load(function(pictures) {
var items = [];
Ext.each(pictures, function(picture) {
console.log(picture.get('image'));
if (!picture.get('image')) {
return;
}
items.push({
xtype: 'myimage',
picture: picture
});
});
//following doesn't work for adding the carousel images:
//carousel.setItems(items);
//carousel.add(items);
//carousel.items = [{html: items}];
//carousel.add(carousel.items);
//carousel.setActiveItem(0);
});
},
Sample JSON with image info
{
"test": {
"cat": {
"entries": [
{
"image": "/images/1.png"
},
{
"image": "/images/2.png"
}
]
}
}
}
Error messages when using carousel.add or carousel.setItems:
Object #<HTMLDivElement> has no method 'add'
Object #<HTMLDivElement> has no method 'setItems'

If your variable carousel has no method add or setItems then it's probably not your carousel.
To make sure of that, you can try to do console.log(carousel); to figure out what it is exactly. Also, it doesn't seem to be declared anywhere in your code...
But it's quite simple to fix. I presume you've added a event listener to your carousel that listens to the activate event and if you take a look at the documentation for this event, you can see that the first parameter sent to the callback function is the container (in this case your carousel)
So what you have to write is this :
onMycarouselActivate: function(carousel, newActiveItem, oldActiveItem, options) {
instead of this
onMycarouselActivate: function(container, newActiveItem, oldActiveItem, options) {
and you should be all set
EDIT
Also if you take a look at the documentation for the image component, you can see there is no picture in the config but there is a src attribute. SO you should write :
items.push({
xtype: 'myimage',
src: picture
});
Hope this helped

try this code
myCarousel.add({
xtype: 'image',
scr:'path of image'
});
where myCarousel is object of carousel.

You can try this, this is working for me.....
Ext.getStore('Pictures').load(function(pictures) {
Ext.each(pictures, function(picture) {
if (picture.get('image')) {
carousel.add({
html: '<img style="max-width: 100%; max-height: 100%;" src="' + picture.get('image') + '"/>'
});
}
});
});
Hope this will help you...

Related

Sencha Touch 2.0: Universal Ext.TitleBar title not changing

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.

Displaying Custom Images in 'tools' config options of ext.grid.panel

I am only a month old with extjs and still experimenting. My question is: I have a grid panel and within it the 'tools' config options. I am using this to enable/disable a Ext.grid.feature.Grouping variable. The 2 handler functions have the logic to disable/enable the 2 views by clicking on the 2 'cross' buttons that appear on the right side of the header. The logic is fine. However, I would like to display my set of custom images in place of the 'cross' buttons. Can this be done? If yes, how? Do I need to make some changes in the css code for that?
I have looked into the documentation and also done a good search but nothing seems to answer my question.
Specify a custom type config on your tools:
Ext.create('Ext.grid.Panel', {
...
tools: [
{
type: 'enable-grouping',
handler: function() {
...
}
},
{
type: 'disable-grouping',
handler: function() {
...
}
}
]
});
Then define the following classes in a stylesheet to style your new tools:
.x-tool-enable-grouping {
background-image: url('path/to/tool/image/enable-grouping.png');
}
.x-tool-disable-grouping {
background-image: url('path/to/tool/image/disable-grouping.png');
}
The size of a tool image should be 15 x 15 px

Load html data with AJAX in Sencha touch when panel is shown

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.

Dojo/Dijit TitlePane

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.

sencha touch textfield clear event

I'm trying to implement a list filter in a text field in sencha touch. For example, I'd have a bunch of contacts, and when I typed in the field, it might filter by name. When I click the circular X button to clear the textfield, I'd like to reset the filter to filter none of the contacts.
The problem is, I can't seem to figure out a way to detect the click on the clear button. There doesn't appear to be any type of event, and I can't seem to hack in a workaround.
If anyone has any idea how to detect a textfield clearing in sencha touch, I'd be much obliged.
I've tried in safari and xcode simulator, and am using sencha touch 1.1.0. Am I missing something? Is this not an issue when it's actually a mobile app?
You can listen for tap events on clearIconContainerEl inside the text field or override the onClearIconTap method.
Ext.setup({
icon: 'icon.png',
tabletStartupScreen: 'tablet_startup.png',
phoneStartupScreen: 'phone_startup.png',
glossOnIcon: false,
onReady: function() {
var searchField = new Ext.form.Search({
name : 'search',
placeHolder: 'Search',
useClearIcon: true,
onClearIconTap: function() {
if (!this.disabled) {
this.setValue('');
console.log('onClearTap: Clear button tapped!');
}
}
});
var viewport = new Ext.Panel({
fullscreen: true,
dockedItems: [{
xtype: 'toolbar',
dock: 'top',
items: [searchField]
}]
});
console.log(searchField.useClearIcon);
searchField.mon(searchField.clearIconContainerEl, {
scope: searchField,
tap: function() {
if (!this.disabled) {
console.log('clearIconContainerEl: Clear button tapped!');
}
}
});
}
});
For sencha touch 2.0 users:
If your using new mvc structure, you can use this in the controller init
this.control({
'#yourTextFieldId clearicon': {
tap: function(){console.log('ClearICON tapped');}
}
....
)};
The problem is the little X is not added in by sencha touch. It is a feature of the "search" input with html5. To capture this event you need to look for the search event. How I solved this was I edited sencha-touch.js
I modified -
if (this.fieldEl) {
this.mon(this.fieldEl, {
focus: this.onFocus,
blur: this.onBlur,
keyup: this.onKeyUp,
paste: this.updateClearIconVisibility,
mousedown: this.onBeforeFocus,
scope: this
});
to be -
if (this.fieldEl) {
this.mon(this.fieldEl, {
focus: this.onFocus,
blur: this.onBlur,
keyup: this.onKeyUp,
paste: this.updateClearIconVisibility,
mousedown: this.onBeforeFocus,
search: this.onSearch,
scope: this
});
inside of Ext.form.Text = Ext.extend(Ext.form.Field, { ...
Now in my implementation of the searchfield I can make a function called onSearch which will be called when the "search" event is called. Note that the "search" event is not only called for the X but for some things like the enter key. The bottom line is sencha touch 1.1 does not check for this event at all and it is the only time the X fires an event so the only solution is to modify sencha-touch.js.