I have integrated the GWT application with Chrome packaged app with help of DirectLinkerinstaller like the code below:
public class CSPCompatibleLinker extends DirectInstallLinker {
#Override
protected String getJsInstallLocation(LinkerContext context) {
return "com/google/gwt/core/ext/linker/impl/installLocationMainWindow.js";
}
}
But now I want to call print function from Chrome packaged app. When I call window.print() it allows me to print current window, but I need to open a new separate window and print that.
Could you anyone please help me in this?
I can't answer anything about GWT or DirectLinkerinstaller, but here's an answer about Chrome Apps, assuming that's what you're asking about:
You use the chrome.app.window.create API to create a window. Then, you can call the print method for that window.
In my apps, I seldom want to print what's in a window, but rather something I've generated specifically for printing. For that, I create a PDF with jsPDF (Google it), which works well. Then I display the PDF in a window, and let the user print the PDF (or save it).
Related
I created a custom webdriver (for a custom browser) by extending RemoteWebDriver. I can easily use it as standalone, by simply instantiating the driver.
But actually I want to use it in a Selenium Grid. Is there a way to register this custom web driver on a node, so that I can use it with via RemoteWebDriver and desired capabilities? I so, what do I need to do.
Any hint is welcome. Thanks in advance.
The WebDriver (server) variants are specifically designed/created/modified continously to be able to drive the ever evolving Web Browsers.
So if you want to drive a Custom Browser through a Custom Webdriver, it seems to be the perfect approach.
At this point, it is not clear from the question if your usecase resembles as a case where you don't actually want a browser.
However, as per the configuration in Browser.java the following set of Browsers are extensively tested before any release:
package org.openqa.selenium.testing.drivers;
import java.util.logging.Logger;
public enum Browser {
chrome,
edge,
ff,
htmlunit,
ie,
none, // For those cases where you don't actually want a browser
opera,
operablink,
safari;
private static final Logger log = Logger.getLogger(Browser.class.getName());
public static Browser detect() {
String browserName = System.getProperty("selenium.browser");
if (browserName == null) {
log.info("No browser detected, returning null");
return null;
}
try {
return Browser.valueOf(browserName);
} catch (IllegalArgumentException e) {
log.severe("Cannot locate matching browser for: " + browserName);
return null;
}
}
}
Solution
To make a provision for your own Custom Webdriver and Custom Browser you may need to add the relevant entries within Browser.java and other required files and you will be good to go.
Please follow the below set of instructions to setup support for a custom browser type when running selenium tests against a Selenium Grid.
Implement the interface org.openqa.selenium.remote.server.DriverProvider (or) extend org.openqa.selenium.remote.server.DefaultDriverProvider wherein you take care of building support for your custom browser.
Create a directory named META-INF\services under your main resources folder and ensure that this directory gets bundled into the jar, when you create a jar out of your project.
Create a service loader file named org.openqa.selenium.remote.server.DriverProvider wherein you add the fully qualified class name of the new class you created in step (1) and place it in the directory created in step (2)
Bundle your project into a jar.
Now start the selenium node by adding the jar created in (4).
Now your new browser is ready to be supported by the Selenium Grid.
Please refer to this selenium-users google forums thread which also talks about the same query wherein the user confirmed that the above mentioned approach worked for them.
You still need to take care of creating a new custom capabilities object from your client side when you instantiate the RemoteWebDriver object for your custom browser.
I am trying to create a console that would work as a shell for a custom programming language. It would be very similar to the pydev interactive console.
Currently, my RCP uses the basic TextConsole and is connected to the shell via pipes so it just displays whatever the shell displays and if the user enters anything in the RCP console, the same is written in the shell.
I want to be able to do a bit more such as move the caret position, add events for up and down arrow keys etc. I believe to do that I need to add a StyledText widget to the console which is done via the ConsoleViewer.
So my question is, that is there any way for me to either override the TextConsole's ConsoleViewer or if I were to extend TextConsole and create my own, then how do I link it with the launch configuration (the one that connects the shell via pipes)?
Also, to get the current default console I use DebugUITools.getConsole(process).
I'm sorry if I haven't put all the information needed; it is a bit difficult to explain. I am happy to add more information.
An idea...
From what I understand I can create a TextConsolePage from the TextConsole using createPage(ConsoleView). Once I have the page I can set the viewer via setViewer(viewer). Here I thought if I create my own viewer (which will have the appropriate stylewidget) then that could be a lead. The only problem is that the viewer needs a Composite and I can't seem to figure out where to get that from.
Why don't you just follow what PyDev does (if you're able to cope with the EPL license)?
The relevant code may be found at:
https://github.com/aptana/Pydev/tree/ad4fd3512c899b73264e4ee981be0c4b69ed5b27/plugins/org.python.pydev/src_dltk_console
https://github.com/aptana/Pydev/tree/ad4fd3512c899b73264e4ee981be0c4b69ed5b27/plugins/org.python.pydev.debug/src_console
So I thought I would answer this myself as I was finally able to accomplish the console. It still is a working prototype but I guess as you keep adding things, you can clean up the code more and more. For my current purposes this is how it worked.
If you want the short version, then I basically mimicked the ProcessConsole provided by Eclipse as that is what I needed: a console in which I can connect a process but since the ProcessConsole is internal, I like to avoid extending those classes.
Following is an outline of the classes I used to achieve interaction with my console. I am not going to give the pretext as to where MyConsole was created. Basically, instead of using DebugUITools.getConsole(myProcess), I used my own myProcess.getConsole() method. MyProcess extends RuntimeProcess.
class MyConsole extends IOConsole {
private IOConsoleInputStream fInput;
private IOConsoleOutputStream fOutput;
private IStreamsProxy fStreamsProxy;
private ConsoleHistory history;
//This is to remember the caret position after the prompt
private int caretAtPrompt;
/* in the console so when you need to replace the command on up and down
* arrow keys you have the position.
* I just did a caretAtPrompt += String.Length wherever string was
* appended to the console. Mainly in the streamlistener and
* InputJob unless you specifically output something to the output
* stream.
*/
//In the constructor you assign all the above fields. Below are some
//to point out.
//fInput = getInputStream();
// fStreamsProxy = process.getStreamsProxy();
// fOutput = newOutputStream();
//We must override the following method to get access to the caret
#Override
public IPageBookViewPage createPage(IConsoleView view) {
return new MyConsolePage(this, view);
}
//After this I followed the ProcessConsole and added the
//InputJob and StreamListener
//defined in there.
}
class MyConsolePage extends TextConsolePage {
//Not much in this class, just override the createViewer
// to return MyConsoleViewer
}
class MyConsoleViewer extends TextConsoleViewer {
//This is the most important class and most of the work is done here
//Again I basically copied everything from IOConsoleViewer and then
//updated whatever I needed
//I added a VerifyKeyListener for the up and down arrow
//keys for the console history
MyConsoleViewer (Composite parent, MyConsole console) {
//I have omitted a lot of code as it was too much to put up,
//just highlighted a few
getTextWidget().addVerifyKeyListener(new MyKeyChecker());
}
class MyKeyChecker implements VerifyKeyListener {...}
}
This is the code for ProcessConsole.
This is the code for IOConsoleViewer.
The ConsoleHistory class I created just had a doubly linked string list to save all the commands the user entered. Quite a simple class to create.
Once you look at the Eclipse classes (ProcessConsole and IOConsoleViewer) it is actually all quite self explanatory. I haven't put in much code here because there is quite a bit. But hopefully this gives some direction as I was completely lost when I started.
I am happy to answer questions though and add more specific code if anyone asks.
I am using GXT for UI development. I have used HTML5 for Dragging file from Desktop to my application and upload it. But now i am having reverse requirement. I want to drag files from browser to desktop which will download the file to desktop.
I know that is possible in Chrome only. And had checked the below demo:
http://www.thecssninja.com/javascript/gmail-dragout
I had tried to implement the above code in my GXT application, but the issue is that i am using Editable Grid which is supporting DnD to TreePanel. Now when i drag from grid to Desktop i think its not capturing the browser event (may be i am wrong here).
Any idea, how it should be done?
Thanks.
Below is the small piece of code which i call after the Data had been inserted in Grid. All records are having the CSS class name as ".icon". The problem is that when i start to drag, the "dragstart" is not being called. Any suggestion?
NOTE: This code is working when i create Buttons, Labels, etc and making them draggable=true with other required parameters.
public static native void test(String id)/*-{
var files = $doc.querySelectorAll('.icon');
for (var i = 0, file; file = files[i]; ++i) {
file.addEventListener("dragstart",function(evt){
$wnd.alert("Drag Event started.. ");
evt.dataTransfer.setData("DownloadURL",this.dataset.downloadurl);
},false);
}
}-*/;
I used this, and it successully performs, no you should check some other place in your code.
From within Java, I am opening an Excel file with the default file handler (MS Excel, in this case :-) ) using the method described in this stackoverflow question:
Desktop dt = Desktop.getDesktop();
dt.open(new File(filename));
However, the Excel program doesn't get the focus. Is there any easy way to do so?
Edit: There is a related stackoverflow question for C#, but I didn't find any similar Java method.
Edit 2: I've did some simple tests, and discovered that Excel starts and gets the focus whenever no instance of Excel is running. When Excel is already open en NOT minimized, the application doesn't get the focus. If instead the Excel Windows was minimized, the above code will trigger a maximization of the window and Excel getting the focus (or vice versa :-) ).
If you only care about Windows (implied in the question), you can change the way you invoke Excel: use "cmd start...".
I have been using this piece of code to launch Windows applications for some time now. Works every time. It relies on the file association in Windows to find the application. The launched application becomes the focused window on the desktop.
In your case, Excel should be associated with .xls, .csv and other typical extensions. If it is, Windows will launch Excel, passing your file to it.
Usage:
MyUtilClass.startApplication( "c:\\mydir\\myfile.csv", "my window title" );
file is the full path to the input file for Excel and title is the window title (the application may or may not take it - Excel changes the window title).
public static void startApplication( String file, String title )
{
try
{
Runtime.getRuntime().exec( new String[] { "cmd", "/c", "start", title, file } );
}
catch( Exception e )
{
System.out.println( e.getMessage() );
}
}
From a scala-program, which runs in the JVM too, I can open an application, and that get's the focus by default. (Tested with xUbuntu, which is a kind of Linux).
import java.awt.Desktop
val dt = Desktop.getDesktop ();
dt.open (new java.io.File ("euler166.svg"));
I can't say, whether this is specific for Linux, or maybe something else - however starting Inkscape in my example, excel in yours, may take a few seconds, while the user impatiently clicks in the javaprogram again, thereby claiming the cursor back. Did you check for that?
You could then change to the last application, at least on Linux and Windows with ALT-Tab aka Meta-Tab (again shown in scala code, which you can easily transform to javacode, I'm sure):
import java.awt.Robot
import java.awt.event._
val rob = new Robot ()
rob.keyPress (KeyEvent.VK_META)
rob.keyPress (KeyEvent.VK_TAB)
rob.keyRelease (KeyEvent.VK_TAB)
rob.keyRelease (KeyEvent.VK_META)
but unfortunately the unknown source off more trouble, also known as user, might do nothing, so switching would be the false thing to do. Maybe with a thread, which checks for a certain amount of time, whether the java-program has the focus, but it keeps a form of roulette, in an interactional environment, because the user may have a fast or slow machine, or change to a third application meanwhile, and so on. Maybe a hint before triggering the new app is the best you can do?
I am using QT Jambi (java) to make screenshots of a browser window.
My main method starts the framework like this:
QApplication.initialize(new String[1]);
ScreenshotMain widget = new ScreenshotMain();
widget.showFullScreen();
QApplication.exec();
and when the browser is done with the loading the following method is invoked and takes the screenshot.
public void loadDone() {
// Taking screenshot
QPixmap pixmap;
pixmap = QPixmap.grabWidget(browser);
pixmap.save(writeTo, "png");
System.out.println("Made screenshot "+writeTo);
browser.loadProgress.disconnect(this);
browser.loadFinished.disconnect(this);
QApplication.closeAllWindows();
}
My question now is the following:
How can I make screenshots out of an application without having to open a browser window, have it load the content. The idea is that I have a server application and I don´t want to open a window to make the screenshot.
Does anyone of you have experience to make screenshots using QT Jambi in this way.
Thanks a lot for your help
Marc
This might be what you are looking for: linky