I found this code, which I guess is for the java file, but does that actually display it, or how do I do the XML? And does Blackberry have a nice GUI for the BB UI yet?
import net.rim.device.api.browser.field2.*;
import net.rim.device.api.ui.*;
import net.rim.device.api.ui.container.*;
public class BrowserFieldDemo extends UiApplication
{
public static void main(String[] args)
{
BrowserFieldDemo app = new BrowserFieldDemo();
app.enterEventDispatcher();
}
public BrowserFieldDemo()
{
pushScreen(new BrowserFieldDemoScreen());
}
}
class BrowserFieldDemoScreen extends MainScreen
{
public BrowserFieldDemoScreen()
{
BrowserFieldConfig myBrowserFieldConfig = new BrowserFieldConfig();
myBrowserFieldConfig.setProperty(BrowserFieldConfig.NAVIGATION_MODE,BrowserFieldConfig.NAVIGATION_MODE_POINTER);
BrowserField browserField = new BrowserField(myBrowserFieldConfig);
add(browserField);
browserField.requestContent("http://www.blackberry.com");
}
}
I got the code from this page
My end-game is to have a web-based app using HTML5 since BB is a b*tch to program. I figure the HTML is super easy, and this way I just have to figure out how to show a webpage. Is there any reason I should not attempt this method?
I found this code, which I guess is for the java file...
Yes
but does that actually display it?
Yes. Why not?
...or how do I do the xml?
Don't get it
And does blackberry have a nice GUI for the BB UI yet?
No. I use BB plugin for Eclipse and it is not hard
My end-game is to have a web-based app using HTML5
Good solution but depends on the app you are trying to develop
...since BB is a b*tch to program
Don't think so
I figure the HTML is super easy, and this way I just have to figure
out how to show a webpage. Is there any reason I should not attempt
this method?
It's good if you want to develop for multiple platforms but you are not going to be able to create an app that is as powerfull as a native one
HTML5 webapp is the best solution since not all BBs use the same code
Related
i'm building a project on Xamarin. Right now i have a big issue. I need to browse user's computer for upload any file. He can of course upload multiple files. As i know Xamarin does not provide browsing of all the system but just its. So i tried to find a way with some drag n drop, i didn't find. I tried a filepicker but he let me pick just one file (my client would upload 100 files at once) so it doesn't fit to what i need. Finally i decided to do my own browsing system but it takes forever to browse because of the UI. Do you have any solution for me ? I would appreciate a package with a filepicker that allow multiple files.
Thanks
Have you tried the class FileOpenPicker in UWP ?
It supports to pick multiple files , check the method FileOpenPicker.PickMultipleFilesAsync.
Sample
Define interface in Forms project
public interface MyFilePicker
{
Task OpenFilePickerAsync();
}
Implement in UWP project
[assembly: Dependency(typeof(UWPFilePicker))]
namespace App24.UWP
{
class UWPFilePicker : MyFilePicker
{
public async Task OpenFilePickerAsync()
{
var openPicker = new FileOpenPicker();
openPicker.ViewMode = PickerViewMode.Thumbnail;
openPicker.SuggestedStartLocation = PickerLocationId.PicturesLibrary;
openPicker.FileTypeFilter.Add(".jpg");
openPicker.FileTypeFilter.Add(".jpeg");
openPicker.FileTypeFilter.Add(".png");
IReadOnlyList<StorageFile> files = await openPicker.PickMultipleFilesAsync();
if (files.Count > 0)
{
StringBuilder output = new StringBuilder("Picked files:\n");
// Application now has read/write access to the picked file(s)
}
else
{
return;
}
}
}
}
Call it in Forms project
private async void Button_Clicked(object sender, EventArgs e)
{
MyFilePicker service = DependencyService.Get<MyFilePicker>();
await service.OpenFilePickerAsync();
}
I need to add pusher object to vertical layout in Vaadin 13
sources: https://vaadin.com/directory/component/icepush/samples
public class Playboard extends VerticalLayout
{
private ICEPush pusher;
public Playboard() throws ExecutionException, InterruptedException{
generateGUI();
}
private void generateGUI() throws ExecutionException, InterruptedException {
..................
.................
pusher = new ICEPush();
VerticalLayout playboard = new VerticalLayout();
playboard.add(pusher); //Cannot resolve method
...........
............
}
Why would you want to do so? It states at add-on page that
A component that adds push support to Vaadin!
Vaadin(both 7-8 versions as well as Flow 10+, which you are using) has a built-in support for Push currently, so there is no need to use a mentioned add-on. In the simplest case, all you need to do to get push working for your view is to add an annotation. There is a good official documentation on push:
Server Push Configuration
Asynchronous Updates
But,anyway, as mentioned in the previous answer you can't use the add-on with V13,since it's available only for Vaadin 6 and 7
You can't - this is for the so called Vaadin Platform (Vaadin 6-8). You have to find a web component replacement for that feature, write your own, or maybe sometime in the future there will be tooling to retrofit the old components into Vaadin Flow.
I've been monkeying around with Dart (& Flutter more specifically on mobile) and have become quite interested in trying Flutter on Desktop.
Anyways, for this one app idea, I need the ability to create a key event. From my research, I found this: https://api.dartlang.org/stable/2.2.0/dart-html/KeyEvent-class.html which mentions a KeyEvent however this primarily relates to Dart:HTML (which I presume just means browser only).
Does Dart run in the command line support any ability for generating key events? Like say I wanted an app to type something for a user.
Thanks!
#Isaac has basically explained it in his comment but this is how it looks like in code:
import 'dart:io';
void main(){
stdin.echoMode = false;
stdin.lineMode = false;
while(true){
if(stdin.readByteSync() == 102){ // f
print('You payed respect');
}
else{break;}
}
}
In my vaadin application I need to implement a fixed header, that changes size depending on the scroll position of the UI.
While there are geters for scroll position in Vaadin 8, there seems to be no functionallity implemented to listen for scroll events. So I tried to implement a JavaScript connector, that just informs the server-side UI, that the user has scrolled, so the server-side UI can then notify the Header as a scrollListener.
So far thats what I planned, but I just can't find out, how to implement my connector in a way that it.
is active after the site got requested by a Client.
is able to call my server-side UI.onScrollEvent() method.
Does anyone know, how the described behavior could be implemented?
Thank you for your help in advance.
After I ran into a few issues with implementaton of a custom widget to achieve, I went for a different approach, using extensions in a vaadin-sense. Here is the truncated code for what I did.
(Vaadin requires the client-side connector code shown later in this post to be in a Widget package. I'm not entirely sure if the server-side component has to be in one too, but for conformity reasons with the usual widget-skeleton I put it into one)
So in the package for the widget:
package my.company.project.scrollUI;
import com.vaadin.server.AbstractExtension;
import com.vaadin.ui.UI;
import my.company.project.scrollUI.client.scrollUI.ScrollUIServerRpc;
public class ScrollUI extends AbstractExtension {
private ScrollUIServerRpc rpc = new ScrollUIServerRpc() {
#Override
public void onScroll() {
//do whatever you need for your implementation
...
}
};
public ScrollUI() {
registerRpc(rpc);
}
public void extend(UI ui) {
super.extend(ui);
}
}
as usual the .gwt.xml file in the package folder, nothing special here:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE module PUBLIC "-//Google Inc.//DTD Google Web Toolkit 2.5.1//EN" "http://google-web-toolkit.googlecode.com/svn/tags/2.5.1/distro-source/core/src/gwt-module.dtd">
<module>
<inherits name="com.vaadin.DefaultWidgetSet" />
</module>
In the package for the client-side code to be compiled to JavaScript:
package my.company.project.scrollUI.client.scrollUI;
import com.vaadin.shared.communication.ServerRpc;
public Interface ScrollUIServerRpc extends ServerRpc {
public void onScroll();
}
And finally the connector for the extension:
package my.company.project.scrollUI.client.scrollUI;
import com.google.gwt.event.dom.client.ScrollEvent;
import com.google.gwt.event.dom.client.ScrollHandler;
import com.google.gwt.user.client.ui.Widget;
import com.vaadin.client.ComponentConnector;
import com.vaadin.client.ServerConnector;
import com.vaadin.client.communication.RpcProxy;
import com.vaadin.client.extensions.AbstractExtensionConnector;
import com.vaadin.shared.ui.Connect;
#Connect(ScrollUI.class)
public class ScrollUIConnector extends AbstractExtensionConnector {
ScrollUIServerRpc rpc = RpcProxy.create(ScrollUIServerRpc.class, this);
#Override
protected void extend(ServerConnector target) {
final Widget ui = ((ComponentConnector) target).getWidget();
ui.addDomHandler(new ScrollHandler() {
#Override
public void onScroll(ScrollEvent event) {
rpc.onScroll();
}
}, ScrollEvent.getType());
}
}
Now don't forget to compile the Widgetset and everything is good to go to be used for your actual UI like all other vaadin extensions:
public class MyUI extends com.vaadin.ui.UI {
#Override
protected void init(VaadinRequest vaadinRequest) {
ScrollUI scrollUI = new ScrollUI();
scrollUI.extend(this);
//everything else that needs to be done
...
}
//everything else that Needs to be done
...
}
I hope this was helpfull for anyone with a similar issue.
I have done this once few years ago by extending the layout component that wrapped the part of UI where I needed this. In GWT there is gwtproject.org/javadoc/latest/com/google/gwt/event/dom/client/… which can be used in DOM handler. So yes, GWT provides suitable client side event. I then used RPC call to server side, where I triggered the corresponding server side event, which I could listen in other parts of the app. The code is not public, but there is LazyLayout add-on that has similar type of implementation, which you could check as reference for your implementation.
https://github.com/alump/LazyLayouts/blob/master/lazylayouts-addon/src/main/java/org/vaadin/alump/lazylayouts/client/LazyVerticalLayoutConnector.java
How can I change favicon of my pages in Vaadin ? I would like to change favicon of my pages but I have no idea where is the place to change it ? Has somebody experience on it ?
First, create a theme directory: /WebContent/VAADIN/themes/mynewtheme
Then, put your custom favicon.ico in this directory. You also need to set theme property in your application :
public class MyNewApplication extends Application {
#Override
public void init() {
...
...
setTheme("mynewtheme");
}
}
Here is a more detailed version of the similar Answer posted by Greg Ballot. My Answer here relates to Vaadin 7, current as of 7.5.3.
Custom Theme
In Vaadin 7.5, you can drop your favicon graphics image file into your own custom theme. If using the Vaadin plugin for various IDEs (NetBeans, Eclipse) or the Maven archetypes, a custom theme named mytheme should have already been created for you. Drop your image file into that mytheme folder.
The main part of your Vaadin 7 app, your subclass of UI, must specify that it uses your custom theme. Again, if using the IDE plugins and/or Maven archetype, this should have already been configured for you. The easiest way is an Java Annotation on the UI subclass.
#Theme ( "mytheme" ) // Tell Vaadin to apply your custom theme, usually a subclass of the Valo or Reindeer theme.
#Title ( "PowerWrangler" ) // Statically specify the title to appear in web browser window/tab.
#SuppressWarnings ( "serial" ) // If not serializing such as "sticky sessions" and such, disable compiler warnings about serialization.
#Push ( PushMode.AUTOMATIC ) // If using Push technology.
public class MyVaadinUI extends UI
{
…
Favicon Usage/Behavior Not Standard
Remember that favicon behavior is not standardized. Favicons developed haphazardly, mostly out of a sense of fun. The exact behavior depends on the particular browser and particular server. Other than the particular folder location, none of this is special to Vaadin.
Image File Formats
Originally the ICO file format was used exclusively. Since then most browsers have evolved to accept any of several formats including JPEG, TIFF, and PNG.
Image Size/Resolution
Originally favicons were intended to be very small bitmap icons. Some browsers have made various uses of the favicon in situations where you may want to provide a higher-resolution image. But remember that smaller files load faster without keeping your users waiting.
Favicon File Name
Some browsers or servers may handle other file names or name extensions, but I've found it easiest to name my file exactly favicon.ico -- even if using a different format! I usually use a PNG file but name it with the .ico extension. While I cannot guarantee this practice works one every server and browser, I’ve not encountered any problem.
Existing Favicon File
Recent versions of Vaadin have included a Vaadin-related icon in a favicon.ico file in a configured project. So you must replace that file with your own. In Vaadin 7.5.3 the file contains four sizes, the largest looking like this:
Older versions did not add a file, so you drop in your own.
IDE Screen Shots
Here are a pair of screen shots. One is the project (logical) view in NetBeans 8, while the other is a files (physical) view.
In case of custom icon name (Vaadin 7):
public class MyServlet extends VaadinServlet implements SessionInitListener {
#Override
protected void servletInitialized() throws ServletException {
super.servletInitialized();
getService().addSessionInitListener(this);
}
#Override
public void sessionInit(SessionInitEvent event) throws ServiceException {
event.getSession().addBootstrapListener(new BootstrapListener() {
#Override
public void modifyBootstrapPage(BootstrapPageResponse response) {
response.getDocument().head()
.getElementsByAttributeValue("rel", "shortcut icon")
.attr("href", "./VAADIN/themes/mynewtheme/custom.ico");
response.getDocument().head()
.getElementsByAttributeValue("rel", "icon")
.attr("href", "./VAADIN/themes/mynewtheme/custom.ico");
}
#Override
public void modifyBootstrapFragment(BootstrapFragmentResponse response) {
}
});
}
}
EDIT
It is better to use the BootstrapListener as a static nested class: link
Vaadin 23.x (plain spring/war application, no springboot!):
Derive an implementation of com.vaadin.flow.component.page.AppShellConfigurator:
#Theme(value = "mytheme")
#PWA(name = "My application", shortName = "MyApp", iconPath = "icons/favicon.ico" )
public class AppShellConfiguratiorImpl implements AppShellConfigurator {
#Override
public void configurePage(AppShellSettings settings) {
settings.addFavIcon("icon", "icons/favicon.ico", "16x16");
}
}
And put your favicon.ico into src\main\webapp\icons (in order that it is encluded in <war-root>/icons/favicon.ico)
A servlet container (3.0 plus, e.g. Tomcat 8.5) will pick up this class automagically and load it.