Re: GWT Button becoming transparent due to CSS?
Well I further investigated the problem, and it turns out its a bug in WebKit browsers. The widget is not redrawn by the browser, despite the fact it's newly created. Does anyone know how to manually trigger a widget redraw or a browser Resize event? Hope anyone knows. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To unsubscribe from this group and stop receiving emails from it, send an email to google-web-toolkit+unsubscr...@googlegroups.com. To post to this group, send email to google-web-toolkit@googlegroups.com. Visit this group at http://groups.google.com/group/google-web-toolkit. For more options, visit https://groups.google.com/groups/opt_out.
Manually Trigger Browser Resize
In one of my applications I am ResizeHandler to resize the GUI of my app. This works fine, but there is one part in my code where I would like to manually trigger a Resize. Does anyone know how I can do that? -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To unsubscribe from this group and stop receiving emails from it, send an email to google-web-toolkit+unsubscr...@googlegroups.com. To post to this group, send email to google-web-toolkit@googlegroups.com. Visit this group at http://groups.google.com/group/google-web-toolkit. For more options, visit https://groups.google.com/groups/opt_out.
Re: Manually Trigger Browser Resize
This is a part of my code:
Window.addResizeHandler(new PageResizeHandler());
and
private class PageResizeHandler implements ResizeHandler {
@Override
public void onResize(ResizeEvent event) {
mainFrame.handleResize(event.getWidth(), event.getHeight());
}
}
This code does the job fine when the browser resizes. However now I would
like manually trigger the browser resize event to force a WebKit browser to
redraw.
simply invoking the handleResize method does not do the job.
On Wednesday, August 21, 2013 8:01:34 PM UTC+8, AgitoM wrote:
In one of my applications I am ResizeHandler to resize the GUI of my app.
This works fine, but there is one part in my code where I would like to
manually trigger a Resize.
Does anyone know how I can do that?
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Re: Manually Trigger Browser Resize
Thank your help so far Jens. Any example on which Window method I can use? I tried looking for it, but couldn't find it. On Wednesday, August 21, 2013 8:01:34 pm UTC +8, AgitoM wrote: In one of my applications I am ResizeHandler to resize the GUI of my app. This works fine, but is there one part in my code YogyakartaT I would like to manually trigger a resizing. Does anyone know how I can do that? -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To unsubscribe from this group and stop receiving emails from it, send an email to google-web-toolkit+unsubscr...@googlegroups.com. To post to this group, send email to google-web-toolkit@googlegroups.com. Visit this group at http://groups.google.com/group/google-web-toolkit. For more options, visit https://groups.google.com/groups/opt_out.
GWT Button becoming transparent due to CSS?
Am currently developing a website for use in mobile browsers, and noticed
that on some of the hand phones, buttons are not shown as visible.
This sometimes happens upon the creation of a widget, on other occasions
when re-creating a certain widget.
Changing the orientation of the screen can make buttons appear again though.
Though I am not sure, it seems to be related to CSS, because when I remove
all CSS files attached to the project, the buttons remain visible.
This is an example of the CSS style I am using on a button:
.mobileButton {
font-size: 14pt;
border: 1px solid #bbb;
border-bottom: 1px solid #a0a0a0;
border-radius: 3px;
background: white;
color: black;
text-align: center;
}
.mobileButton:hover {
background: #bbb;
color: black;
}
The style is attached to a button using the following line:
clickScan.setStyleName(menuMobileButton);
Hope anyone can help out.
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How to use DeckLayoutPanel?
Been trying to implement a iPhone like transition between widgets for a
mobile project I'm working on
Basically I need transition from left to right, and from right to left.
Read online that this can be accomplished using a DeckLayoutPanel.
Been trying to get an example to work, but not matter what I try, I I can't
get any of the DeckLayoutPanel contents to display.
Of the many things I have tried, this is a example:
public class AnimationMainView extends Composite {
private DeckLayoutPanel aPanel = new DeckLayoutPanel();
public AnimationMainView() {
initWidget(this.aPanel);
this.setSize(100%, 100%);
this.aPanel.setAnimationDuration(5000);
this.aPanel.setAnimationVertical(false);
Widget1 w1 = new Widget1(this);
this.aPanel.add(w1);
Widget2 w2 = new Widget2(this);
this.aPanel.add(w2);
this.openWidget1();
}
public void openWidget1() {
this.aPanel.showWidget(0);
}
public void openWidget2() {
this.aPanel.showWidget(1);
}
}
Does anyone have a working example of a DeckLayoutPanel being used, or can
someone explain what I am doing wrong?
Thanks in advance.
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Re: GWT Mobile App Widgets
Hi Daniel, Tried the mgwt, but it seems that the framework also only support webkit based browsers? I got some errors when trying to run in in Firefox. Am I correct to say that only WebKit is supported? On May 1, 2:52 am, Daniel Kurka kurka.dan...@googlemail.com wrote: if you are interested in mgwt there is a very friendly user group for the framework:http://groups.google.com/group/mgwt mgwt pays a lot of attention to do things in a GWT way, which brings big advantages to mobile device development. take a look for yourself athttp://www.m-gwt.com On 30 Apr., 20:43, Alfredo Quiroga-Villamil laww...@gmail.com wrote: Yes, if you are trying to cover that case, then you must absolutely find a mobile library that can potentially support any of the installable browsers in mobile devices. The important case to always keep in mind I would say is over engineering. Unless it's a requirement from the client, I would ask myself the question, what percentage of the market am I trying to support? Ideally the answer would be 100%, reality it's a different story. This is more the case since mobile web is fairly young. Even the web after all these years would be a nightmare if you removed GWT and libraries like it that have tried to make the developer experience better by hiding the browser differences or better said quirks. About a year and a half ago, perhaps more already, there was a point where the future of mobile web for developers looked bright. It was all going to be based on webkit or at least most of it and the world was going to be a happy place. Fast forward and we find a world where there is an incredible amount of fragmentation in the mobile market place with multiple versions of webkit, many don't exactly behaving consistently. Throw into the mix your request and it's almost starting to feel like we are right back to the web as we know it today where may browsers exists with difference in behavior not only between them but even among versions. Best of luck and wish your project the best. Alfredo On Mon, Apr 30, 2012 at 2:01 PM, AgitoM karel.m...@gmail.com wrote: Well the app runs fine on iPhone Safari, Google Chrome, and the Android Default Browser. However the app does not work on Firefox and Opera installations on the Android platform, so that could be a problem. So still hope someone can make a suggestion. On Apr 30, 10:53 pm, Alfredo Quiroga-Villamil laww...@gmail.com wrote: Mobile web libraries are based on webkit. Firefox is not. Mobile devices use webkit. To test the app you can try to use a webkit based browser such as chrome or safari. So if you are happy with that library I recommend you continue using it and test it as previously mentioned. Regards, Alfredo On Apr 30, 2012 10:35 AM, AgitoM karel.m...@gmail.com wrote: Does anyone know a decent library that contains GWT Widgets for the development of Mobile Apps in GWT? Over the past few days I've been experimenting with gwt-mobile-gui. Though this library is great, it doesn't appear to be working on all browsers. (or at least I can't get it to work on Firefox). So basically I am looking into other Libraries. Does anyone have any suggestions? Reason I am looking for a mobile widget library is because I am developing a mobile app. I developed a framework for a mobile app myself, and it works fine, but it looks too ugly. If no other library is available, does anyone know any tutorial of guide to how to develop nice looking GUI in GWT? Hope anyone can offer some advice. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group athttp://groups.google.com/group/google-web-toolkit?hl=en. -- Alfredo Quiroga-Villamil AOL/Yahoo/Gmail/MSN IM: lawwton -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: GWT Mobile App Widgets
Thanks for all the replies so far. The gwt-mobile-ui library I used, was part of the GWTMobile project. It has the problem I described. Since my project is going to be deployed in a very large group of users, who all have different phones and browsers installed on it, I need to make my application as widely deployable as possible. gwt- mobile-ui unfortunately is too limited. I hadn't see mgwt yet. Will check it out today if time allows, may adopt is as the platform in the long run, should I choose to replace my own mobile framework (which has is flaws such as being ugly and requiring a lot of coding). Will probably join the user group as well. On May 1, 2:52 am, Daniel Kurka kurka.dan...@googlemail.com wrote: if you are interested in mgwt there is a very friendly user group for the framework:http://groups.google.com/group/mgwt mgwt pays a lot of attention to do things in a GWT way, which brings big advantages to mobile device development. take a look for yourself athttp://www.m-gwt.com On 30 Apr., 20:43, Alfredo Quiroga-Villamil laww...@gmail.com wrote: Yes, if you are trying to cover that case, then you must absolutely find a mobile library that can potentially support any of the installable browsers in mobile devices. The important case to always keep in mind I would say is over engineering. Unless it's a requirement from the client, I would ask myself the question, what percentage of the market am I trying to support? Ideally the answer would be 100%, reality it's a different story. This is more the case since mobile web is fairly young. Even the web after all these years would be a nightmare if you removed GWT and libraries like it that have tried to make the developer experience better by hiding the browser differences or better said quirks. About a year and a half ago, perhaps more already, there was a point where the future of mobile web for developers looked bright. It was all going to be based on webkit or at least most of it and the world was going to be a happy place. Fast forward and we find a world where there is an incredible amount of fragmentation in the mobile market place with multiple versions of webkit, many don't exactly behaving consistently. Throw into the mix your request and it's almost starting to feel like we are right back to the web as we know it today where may browsers exists with difference in behavior not only between them but even among versions. Best of luck and wish your project the best. Alfredo On Mon, Apr 30, 2012 at 2:01 PM, AgitoM karel.m...@gmail.com wrote: Well the app runs fine on iPhone Safari, Google Chrome, and the Android Default Browser. However the app does not work on Firefox and Opera installations on the Android platform, so that could be a problem. So still hope someone can make a suggestion. On Apr 30, 10:53 pm, Alfredo Quiroga-Villamil laww...@gmail.com wrote: Mobile web libraries are based on webkit. Firefox is not. Mobile devices use webkit. To test the app you can try to use a webkit based browser such as chrome or safari. So if you are happy with that library I recommend you continue using it and test it as previously mentioned. Regards, Alfredo On Apr 30, 2012 10:35 AM, AgitoM karel.m...@gmail.com wrote: Does anyone know a decent library that contains GWT Widgets for the development of Mobile Apps in GWT? Over the past few days I've been experimenting with gwt-mobile-gui. Though this library is great, it doesn't appear to be working on all browsers. (or at least I can't get it to work on Firefox). So basically I am looking into other Libraries. Does anyone have any suggestions? Reason I am looking for a mobile widget library is because I am developing a mobile app. I developed a framework for a mobile app myself, and it works fine, but it looks too ugly. If no other library is available, does anyone know any tutorial of guide to how to develop nice looking GUI in GWT? Hope anyone can offer some advice. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group athttp://groups.google.com/group/google-web-toolkit?hl=en. -- Alfredo Quiroga-Villamil AOL/Yahoo/Gmail/MSN IM: lawwton -- You
GWT Mobile App Widgets
Does anyone know a decent library that contains GWT Widgets for the development of Mobile Apps in GWT? Over the past few days I've been experimenting with gwt-mobile-gui. Though this library is great, it doesn't appear to be working on all browsers. (or at least I can't get it to work on Firefox). So basically I am looking into other Libraries. Does anyone have any suggestions? Reason I am looking for a mobile widget library is because I am developing a mobile app. I developed a framework for a mobile app myself, and it works fine, but it looks too ugly. If no other library is available, does anyone know any tutorial of guide to how to develop nice looking GUI in GWT? Hope anyone can offer some advice. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: GWT Mobile App Widgets
Well the app runs fine on iPhone Safari, Google Chrome, and the Android Default Browser. However the app does not work on Firefox and Opera installations on the Android platform, so that could be a problem. So still hope someone can make a suggestion. On Apr 30, 10:53 pm, Alfredo Quiroga-Villamil laww...@gmail.com wrote: Mobile web libraries are based on webkit. Firefox is not. Mobile devices use webkit. To test the app you can try to use a webkit based browser such as chrome or safari. So if you are happy with that library I recommend you continue using it and test it as previously mentioned. Regards, Alfredo On Apr 30, 2012 10:35 AM, AgitoM karel.m...@gmail.com wrote: Does anyone know a decent library that contains GWT Widgets for the development of Mobile Apps in GWT? Over the past few days I've been experimenting with gwt-mobile-gui. Though this library is great, it doesn't appear to be working on all browsers. (or at least I can't get it to work on Firefox). So basically I am looking into other Libraries. Does anyone have any suggestions? Reason I am looking for a mobile widget library is because I am developing a mobile app. I developed a framework for a mobile app myself, and it works fine, but it looks too ugly. If no other library is available, does anyone know any tutorial of guide to how to develop nice looking GUI in GWT? Hope anyone can offer some advice. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: byte array to Image
Decided to deal with the 32kb limit in Internet Explorer 8. (Internet
Explorer 9 is not a problem).
Dealt with the problem by creating a servlet that outputs the byte
array as a image.
I'm sending the ID of the image, in this case a map, to the servlet
using the GET method.
This is the code for the doGet operation for my dedicated
ImageServlet:
protected void doGet(HttpServletRequest request, HttpServletResponse
response) throws ServletException, IOException {
response.setContentType(image/png);
if(request.getParameter(MapID) != null) {
int mapID =
Integer.parseInt(request.getParameter(MapID));
byte[] image = null;
try {
image = wsStub.getMapImage(mapID);
}
catch (Exception e) {
e.printStackTrace();
}
OutputStream out = response.getOutputStream();
out.write(image);
out.close();
}
}
On my RPC Servlet side, I simply return this as the URL of the
image:
(ImageServlet?MapID= + mapID)
Code on the client side didn't change from what I earlier posted.
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Re: byte array to Image
Hi All, Thank you so much for the many replies. Tried out the solution and library suggested by Xi just now, since his solution was the easiest to verify. It works. After having downloaded this library: http://sourceforge.net/projects/migbase64/ I convert the byte string like this: String base64String = data:image/png;base64, + Base64.encodeToString(image,false); Then simply use it at the client side like this: Image image = new Image(base64String); The image now displays. I think the base64 library I initially used was not browser safe as Jens and Thad suggested. Would have build a servlet as Jens suggested if it had not worked. As for your question Alexandre, I don't know why the service developer suggested I could not use base64. Could have been inexperience on his behalf :-). Clearly base64 does work. On Sep 17, 12:02 am, Xi chenx...@gmail.com wrote: Hi, I've usedhttp://sourceforge.net/projects/migbase64/in my application, to convert the byte array to a base64 string, which works pretty well and efficient My code is like : String base64 = data:image/png;base64, + Base64.encodeToString(bytes,false); And at the client side, you just set the value into an image element's src attribute. But be careful, IE CAN NOT take charge of an image that bigger than 32KB by using the Base64 way. Hope this can help you. On 16 sep, 12:54, AgitoM karel.m...@gmail.com wrote: Hi all, From a web service I am receiving a byte array that represents a image. I need to somehow squeeze this byte array into a image widget or similar widget on my client side. First I tried to convert the byte array to a base64 string: String base64 = Base64Utils.toBase64(image); base64 = data:image/png;base64,+base64; This didn't work. The developer of the web service informed me that I should not convert the byte array to a base64 string, and just use it directly. To test if the byte array represented a correct image, I saved the byte array to a physical image: InputStream in = new ByteArrayInputStream(image); BufferedImage bImage = ImageIO.read(in); File outputfile = new File(saved.png); ImageIO.write(bImage, png, outputfile); This succesfully resulted in a physical image being created. However I don't want to write the file and then send the URL to the image widget on my client side. Anybody have any suggestion about how I can get this byte array squeezed into a image? Or convert this byte array to a base64 string that does work? -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
byte array to Image
Hi all, From a web service I am receiving a byte array that represents a image. I need to somehow squeeze this byte array into a image widget or similar widget on my client side. First I tried to convert the byte array to a base64 string: String base64 = Base64Utils.toBase64(image); base64 = data:image/png;base64,+base64; This didn't work. The developer of the web service informed me that I should not convert the byte array to a base64 string, and just use it directly. To test if the byte array represented a correct image, I saved the byte array to a physical image: InputStream in = new ByteArrayInputStream(image); BufferedImage bImage = ImageIO.read(in); File outputfile = new File(saved.png); ImageIO.write(bImage, png, outputfile); This succesfully resulted in a physical image being created. However I don't want to write the file and then send the URL to the image widget on my client side. Anybody have any suggestion about how I can get this byte array squeezed into a image? Or convert this byte array to a base64 string that does work? -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Developing Google Docs like Feature
For the project I am working on, I need to develop a Google Docs like feature since we should support collaborative document editing. I already have a mechanism based on Comet that can synchronize data, but I need to be able to update a text onscreen based on what is being keyed in on the client, and what is coming in through from the server. Currently I'm using a rich text area, problem with that is though when a update comes in, the cursor moved back to the top left corner, or when people are editing on the same line, all people share the same cursor, which results in all user effectively overwriting each other. Any other widget I can use, or any way I can integrate Google Docs in the platform I'm developing? -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-tool...@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
GWT-Connectors: Delete Shape
For a Education project I am doing using GWT, I need to implement a diagram modeling feature. I am attempting to do this in GWT. The type of model I am attempting to construct essentially requires a Widget to be dragged to a canvas. (Currently implemented as a AbsolutePanel with GWT DnD for the drag and drop interface) and the widgets on the canvas to be connected by a line. It should be possible to move the widgets are afterwards. (And the lines moving along with them). I'm currently using GWT-Connectors to implement the connection of widgets. I'm using this piece of code to create a new GWT-Connectors Shape and add it to the AbsolutePanel: Diagram diagram = new Diagram(this.boundaryPanel); SquareSprite square = new SquareSprite(); //My defined Composite Widget Shape shapeSquare = new Shape(square); //Wrapping it into a GWT- Connectors Shape square.addClickHandler(new ShapeClickHandler(square)); //Adding a Click handler to allow selection this.boundaryPanel.add(square, leftCoord, topCoord); //Adding Widget to AbsolutePanel shapeSquare.showOnDiagram(diagram); //Show Shape on GWT-Connectors Diagram I add a Connector to the same Diagram using this code: Connector connector = new Connector(leftCoord, topCoord, leftCoord +100, topCoord+40); connector.showOnDiagram(diagram); I then use the drag and drop functionality of the GWT-Connectors shape and connector to allow the connector to be connected between shapes. However things become a problem when I attempt to drag a connector around after having deleted a widget using this code: this.selectedShape.removeFromDiagram(diagram); boundaryPanel.remove(this.selectedShape); Attempting to drag a Connector around, will result in the following error after attempting to delete a widget: com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java: 352) at java.lang.Thread.run(Thread.java:662) Caused by: java.lang.IllegalStateException: Unattached drop target. You must call DragController#unregisterDropController for all drop targets not attached to the DOM. at com.allen_sauer.gwt.dnd.client.DropControllerCollection $Candidate.init(DropControllerCollection.java:48) at com.allen_sauer.gwt.dnd.client.DropControllerCollection.resetCache(DropControllerCollection.java: 137) at com.allen_sauer.gwt.dnd.client.PickupDragController.resetCache(PickupDragController.java: 349) at com.allen_sauer.gwt.dnd.client.AbstractDragController.dragStart(AbstractDragController.java: 155) at com.allen_sauer.gwt.dnd.client.PickupDragController.dragStart(PickupDragController.java: 206) at pl.tecna.gwt.connectors.client.Diagram $4.dragStart(Diagram.java: 171) For a more elaborate, see my post in the GWT-Connectors group: http://groups.google.com/group/gwt-connectors/browse_thread/thread/637880f74f3c9e60 My questions are: Am I creating and deleting the Widget and Shape properly: If yes, how can I correct the error? If no, how am I supposed to do it then? Sorry I post this question here, the GWT-Connectors group seems to be very inactive. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-tool...@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
A Alternative to GWT-Connectors?
For my currently project I am attempting to implement a drag and drop diagram/modeling feature. Essentially I need to be able to connect 2 composite widgets, that have been dragged on a Absolute Panel. After connecting, the widgets needs to be able to me moved around. Next to that, it must be possible to delete widgets and connections. To facilitate I am currently using GWT-Connectors. However I have been encountering problems with GWT-Connectors that so far I've been unable to overcome. The problems occur after deleting a widget from the absolute panel. Since development on GWT-Connectors seems to be slow, or not existing at all, and the group related to the project is also very inactive, I need a plan B in case I can't get the problems with GWT-Connectors solved. Therefore I would like to ask, is the a alternative library to GWT- Connectors available? I'm even willing to consider GWT Libraries for which I will have to pay, because I really need this functionality. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-tool...@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: Timer to Refresh a Table View
You can use this:
public void refreshTable() {
Timer t = new Timer() {
public void run() {
//Retrieve Data
//Refresh table
refreshTable();
}
};
// Schedule the timer to run once in 5 minutes.
t.schedule(30);
}
This essentially this creates a recursive loop, that will halt for 5
minutes every time it starts a loop cycle.
This will not hang your single treated Javascript like your earlier
approach.
On Jul 15, 2:41 am, Irving Ruan irvingr...@gmail.com wrote:
Hi all,
So I understand that onModuleLoad() method in the class that
implements EntryPoint is the method that basically initiates the GWT
web app. On this web app, I have some headers and metadata info, such
as the main title. However, I have a Table which dynamically pulls in
data from a local SQL DB. While I am able to successfully read from
the DB and display the data, I want the table to automatically reload
ever 5 minutes, which in return, refreshes the view if the DB changes
info.
I tried implementing a sleep timer function within the onModuleLoad()
within an infinite while loop but that does not work and the page
never completely loads because onModuleLoad() needs to finish being
called before the view gets loaded. Any ideas on how to implement an
automatic table or page refresher ever X minutes?
Here's the code in my onModuleLoad() function:
public void onModuleLoad() {
// Set alignment and size
DockPanel mainPanel = new DockPanel();
mainPanel.setSize(100%, 100%);
mainPanel.setVerticalAlignment(HasAlignment.ALIGN_MIDDLE);
mainPanel.setHorizontalAlignment(HasAlignment.ALIGN_CENTER);
final AppTableView tableView = new AppTableView();
final AppFrameView frameView = new AppFrameView();
// Add view modules to the page
mainPanel.add(appFrameView, DockPanel.NORTH);
mainPanel.add(appTableView, DockPanel.CENTER);
RootPanel.get().add(mainPanel);
while (true)
{
// This method pulls in data from the SQL db
and displays it
tableView.draw();
timer(500);
}
}
The tableView.draw() method is the one that pulls in data from the SQL
DB and displays it.
Thanks in advance,
-I.
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Re: Google Web Toolkit Lagging
Could this have been due to a recent Google Web Toolkit update? I indeed don't consider the problem serious, since the system still works fine when compiled. It is annoying though when debugging, specially since I'm building a large system that involves data synchronization. On Jul 12, 9:06 pm, anjan bacchu.dev anjan.d...@gmail.com wrote: Hi There, Since the javascript code that is generated while working within eclipse is NOT optimized, it is expected that the application becomes slow. As long as the compiled application is NOT slow, you should be fine. BR, ~A On Mon, Jul 12, 2010 at 10:12 AM, AgitoM karel.m...@gmail.com wrote: Since somewhere last week, whenever I try and run a application I build in debug mode, the application is heavy lagging. This is the case in any browser that I use, and was not the case until a few days ago. Over the past few days there have been no major changes to the source code of the application. On top of that, if I compile the application and deploy on Apache Tomcat the speed of the application is back to normal. Has anyone else experienced this problem? Is it due to some GWT update? Anyone who has encountered it managed to fix it? -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-tool...@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.comgoogle-web-toolkit%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-tool...@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Google Web Toolkit Lagging
Since somewhere last week, whenever I try and run a application I build in debug mode, the application is heavy lagging. This is the case in any browser that I use, and was not the case until a few days ago. Over the past few days there have been no major changes to the source code of the application. On top of that, if I compile the application and deploy on Apache Tomcat the speed of the application is back to normal. Has anyone else experienced this problem? Is it due to some GWT update? Anyone who has encountered it managed to fix it? -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-tool...@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Remove DecoratedTabPanel Margin
For a large application I am developing I am using a DecoratedTabPanel in a DecoratedTabPanel, to create the illusion of sub Tabs. However, the content of a tab has a white margin around it, which makes the tabPanel inside the tabPanel look rather ugly. How can I remove the white margin? I've been tempering with the CSS sheets, but I can't seem to get it to work. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-tool...@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: Calling RSS service in GWT from the server side
As promised, here is the code that finally did the trick for me.
The key was using the java.net.URL Object. This object does work when
compiled on the server side.
The code:
The relavant imports:
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.util.Iterator;
The Function:
public Weather getWeatherInSingapore() {
System.out.println(Server Reached);
String request = http://weather.yahooapis.com/forecastrss?
w=1062617u=c;
Weather weatherReport = new Weather();
try {
URL url = new URL(request);
URLConnection yc = url.openConnection();
BufferedReader br = new BufferedReader(new
InputStreamReader(yc.getInputStream()));
String xml = ;
String line;
while ((line = br.readLine()) != null) {
xml = xml + line;
}
br.close();
weatherReport = this.convertYAHOOWeather(xml);
} catch (Exception e) {
e.printStackTrace();
}
return weatherReport;
}
Again:
WeatherReport is a custom object I've written myself to contain the
necessary Information
The convertYAHOOWeather is a private function that parses the XML
reply form the YAHOO RSS (Using dom4j).
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Re: Calling RSS service in GWT from the server side
Managed to solve the problem. Used a different object to connect to YAHOO. Don't know why my first solution didn't work though. I do not have access to my corrected code currently, but will post the right solution here as soon as possible. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-tool...@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: Invoke SOAP Web Service from GWT on the server side.
Hi Stefan, Thanks for your reply. Well thats what I indeed thought as well. But for some reason invoking a service using AXIS2 is causing me a problem, hence I decided to ask if there was any restriction. Well, I will just keep on trying and getting it to work. Once I do, I will post a solution here. In the meanwhile, if anyone has a good idea on how to do it, feel free to post here. On Jun 18, 10:45 pm, Stefan Bachert stefanbach...@yahoo.de wrote: Hi Agito, when you on the server side, you can do anything you can do with java. No limits from GWT applies. With other word, you may ask any other java group, too Stefan Bacherthttp://gwtworld.de On Jun 17, 5:59 am, AgitoM karel.m...@gmail.com wrote: For a big GWT project I am working on, we need to to retrieve data from other computer systems. Based on my previous experience, a good way to integrate these two systems, is to integrate them together using a SOAP based Web Service. Preferably I would like to server side of my GWT project to invoke the Web Service of the other system, and retrieve some data which is then send back to the client using GWT's normal RPC methods. I've tried creating such a integration using AXIS2 in Eclipse. This however does not seem to work well. Therefore I would like to ask if anyone knows what is the way Google prefers for GWT projects to make Web Service calls? I've tried Googling for solutions for a significant amount of time, but couldn't find much. Anyone have any idea? -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-tool...@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Invoke SOAP Web Service from GWT on the server side.
For a big GWT project I am working on, we need to to retrieve data from other computer systems. Based on my previous experience, a good way to integrate these two systems, is to integrate them together using a SOAP based Web Service. Preferably I would like to server side of my GWT project to invoke the Web Service of the other system, and retrieve some data which is then send back to the client using GWT's normal RPC methods. I've tried creating such a integration using AXIS2 in Eclipse. This however does not seem to work well. Therefore I would like to ask if anyone knows what is the way Google prefers for GWT projects to make Web Service calls? I've tried Googling for solutions for a significant amount of time, but couldn't find much. Anyone have any idea? -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-tool...@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Calling RSS service in GWT from the server side
Over the past few days I have been working on a small GWT based
application which retrieves and displays Weather information from
YAHOO RSS in real time.
To get information from the YAHOO RSS feed, I am using the HttpClient
from the org.apache.commons library.
Using this library I attempt to make a call to the RSS feed on the
server side of the GWT application I am building.
The application I have written works fine while run in debug mode
using Eclipse. However when the application is compiled and deployed
on Apache Tomcat 6, it doesn't work anymore. The application simply
makes no call to YAHOO. Evenmore, it seems nothing is happening at all
on the server side of the application. I can't be more specific about
what goes wrong becaue no error is given. I've checked the Apache
Tomcat 6 logs, and no error or any system out information is present
in the logs. The client side GUI loads properly, but as I said,
nothing seems to happen on the server side.
Being completely clueless about what causes this problem, and having
no error feedback to go on. I decided to post the problem here, hoping
someone may know the cause of this.
This is the relevant part of my server sides source code:
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Iterator;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.methods.GetMethod;
public Weather getWeatherInSingapore() {
System.out.println(Server Reached);
String request = http://weather.yahooapis.com/forecastrss?
w=1062617u=c;
Weather weatherReport = new Weather();
HttpClient client = new HttpClient();
GetMethod method = new GetMethod(request);
try {
// Send GET request
int statusCode = client.executeMethod(method);
if (statusCode != HttpStatus.SC_OK) {
System.out.println(Method failed: +
method.getStatusLine());
}
InputStream rstream = null;
// Get the response body
rstream = method.getResponseBodyAsStream();
// Process the response from Yahoo! Web Services
BufferedReader br = new BufferedReader(new
InputStreamReader(
rstream));
String xml = ;
String line;
while ((line = br.readLine()) != null) {
xml = xml + line;
}
br.close();
weatherReport = this.convertYAHOOWeather(xml);
} catch (IOException e) {
System.out.println(Error);
e.printStackTrace();
}
return weatherReport;
}
Note:
WeatherReport is a custom object I've written myself to contain the
necessary Information
The convertYAHOOWeather is a private function that parses the XML
reply form the YAHOO RSS.
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