Re: JSNI Question
I didn't know that, are there bug reports I could get the details from?
On Friday, February 5, 2016 at 5:23:42 AM UTC, Stepan Koltsov wrote:
>
> Except there are lots of things that are not possible via jsinterop. (Or
> maybe possible, but hard to find how to do it).
>
> For example:
>
> * JsArray still requires type parameter to extend JavaScriptObject, so you
> cannot work with cannot work with arrays of @JsType
>
> * you cannot do index without JSNI (you cannot express foo[bar] in
> jsinterop without JSNI and @JsOverlay).
>
> * you cannot catch `this` argument in function callback (which is used
> heavily in jquery).
>
> --
> Stepan
>
>
> On Thursday, January 14, 2016 at 2:21:07 PM UTC+3, salk31 wrote:
>>
>> NB JSNI is being replaced by JsInterop... it is much nicer so if you are
>> starting new code I'd strongly recommend you use it rather than JSNI.
>>
>> On Sunday, January 10, 2016 at 8:00:30 AM UTC, Gourab wrote:
>>>
>>> Let me understand your question.
>>>
>>> - You have a GWT application, where you want to expose few
>>> functionality/UI via JavaScript Api.
>>>
>>> If thats what you want to achieve:
>>>
>>> - Can you check if you have
>>> in the gwt module where the API is exposed ?
>>> - I dont think you need to prefaced anything with $wnd
>>>
>>> Regards
>>> Gourab.
>>>
>>>
>>>
>>>
>>> On Sat, Jan 9, 2016 at 10:00 PM, Eric Nissan wrote:
>>>
I never got a response to this. Anyone know if this is an issue?
Any help would be appreciated.
Thanks,
Eric
On Tuesday, December 29, 2015 at 5:55:28 PM UTC-5, Eric Nissan wrote:
>
> I am using JSNI to reference a javascript library. My initial call is
> fine, but then somewhere down they chain I get a null pointer inside the
> javascript library.
>
> I am referencing the library like this
>
> $wnd.TradingView.widget({});
>
> which is a valid reference.
>
> This then seems to load in other javascript files. the object it
> loads are not referenced as $wnd (because that is a GWT thing), and I
> eventually get a "cannot read property 'init' of undefined".
>
> My question is, could this be causing my problems?
> for example I am getting this error on this call. Is this because it
> is not prefaced with $wnd?
> $.i18n.init({})
>
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>>>
>>>
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Re: JSNI Question
Except there are lots of things that are not possible via jsinterop. (Or
maybe possible, but hard to find how to do it).
For example:
* JsArray still requires type parameter to extend JavaScriptObject, so you
cannot work with cannot work with arrays of @JsType
* you cannot do index without JSNI (you cannot express foo[bar] in
jsinterop without JSNI and @JsOverlay).
* you cannot catch `this` argument in function callback (which is used
heavily in jquery).
--
Stepan
On Thursday, January 14, 2016 at 2:21:07 PM UTC+3, salk31 wrote:
>
> NB JSNI is being replaced by JsInterop... it is much nicer so if you are
> starting new code I'd strongly recommend you use it rather than JSNI.
>
> On Sunday, January 10, 2016 at 8:00:30 AM UTC, Gourab wrote:
>>
>> Let me understand your question.
>>
>> - You have a GWT application, where you want to expose few
>> functionality/UI via JavaScript Api.
>>
>> If thats what you want to achieve:
>>
>> - Can you check if you have
>> in the gwt module where the API is exposed ?
>> - I dont think you need to prefaced anything with $wnd
>>
>> Regards
>> Gourab.
>>
>>
>>
>>
>> On Sat, Jan 9, 2016 at 10:00 PM, Eric Nissan wrote:
>>
>>> I never got a response to this. Anyone know if this is an issue?
>>>
>>> Any help would be appreciated.
>>>
>>> Thanks,
>>> Eric
>>>
>>>
>>> On Tuesday, December 29, 2015 at 5:55:28 PM UTC-5, Eric Nissan wrote:
I am using JSNI to reference a javascript library. My initial call is
fine, but then somewhere down they chain I get a null pointer inside the
javascript library.
I am referencing the library like this
$wnd.TradingView.widget({});
which is a valid reference.
This then seems to load in other javascript files. the object it loads
are not referenced as $wnd (because that is a GWT thing), and I eventually
get a "cannot read property 'init' of undefined".
My question is, could this be causing my problems?
for example I am getting this error on this call. Is this because it
is not prefaced with $wnd?
$.i18n.init({})
>>> --
>>> You received this message because you are subscribed to the Google
>>> Groups "GWT Users" group.
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>>> For more options, visit https://groups.google.com/d/optout.
>>>
>>
>>
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Re: JSNI Question
NB JSNI is being replaced by JsInterop... it is much nicer so if you are
starting new code I'd strongly recommend you use it rather than JSNI.
On Sunday, January 10, 2016 at 8:00:30 AM UTC, Gourab wrote:
>
> Let me understand your question.
>
> - You have a GWT application, where you want to expose few
> functionality/UI via JavaScript Api.
>
> If thats what you want to achieve:
>
> - Can you check if you have
> in the gwt module where the API is exposed ?
> - I dont think you need to prefaced anything with $wnd
>
> Regards
> Gourab.
>
>
>
>
> On Sat, Jan 9, 2016 at 10:00 PM, Eric Nissan > wrote:
>
>> I never got a response to this. Anyone know if this is an issue?
>>
>> Any help would be appreciated.
>>
>> Thanks,
>> Eric
>>
>>
>> On Tuesday, December 29, 2015 at 5:55:28 PM UTC-5, Eric Nissan wrote:
>>>
>>> I am using JSNI to reference a javascript library. My initial call is
>>> fine, but then somewhere down they chain I get a null pointer inside the
>>> javascript library.
>>>
>>> I am referencing the library like this
>>>
>>> $wnd.TradingView.widget({});
>>>
>>> which is a valid reference.
>>>
>>> This then seems to load in other javascript files. the object it loads
>>> are not referenced as $wnd (because that is a GWT thing), and I eventually
>>> get a "cannot read property 'init' of undefined".
>>>
>>> My question is, could this be causing my problems?
>>> for example I am getting this error on this call. Is this because it is
>>> not prefaced with $wnd?
>>> $.i18n.init({})
>>>
>> --
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>> email to google-web-toolkit+unsubscr...@googlegroups.com .
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>> .
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>> For more options, visit https://groups.google.com/d/optout.
>>
>
>
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Re: JSNI Question
Let me understand your question.
- You have a GWT application, where you want to expose few functionality/UI
via JavaScript Api.
If thats what you want to achieve:
- Can you check if you have in
the gwt module where the API is exposed ?
- I dont think you need to prefaced anything with $wnd
Regards
Gourab.
On Sat, Jan 9, 2016 at 10:00 PM, Eric Nissan wrote:
> I never got a response to this. Anyone know if this is an issue?
>
> Any help would be appreciated.
>
> Thanks,
> Eric
>
>
> On Tuesday, December 29, 2015 at 5:55:28 PM UTC-5, Eric Nissan wrote:
>>
>> I am using JSNI to reference a javascript library. My initial call is
>> fine, but then somewhere down they chain I get a null pointer inside the
>> javascript library.
>>
>> I am referencing the library like this
>>
>> $wnd.TradingView.widget({});
>>
>> which is a valid reference.
>>
>> This then seems to load in other javascript files. the object it loads
>> are not referenced as $wnd (because that is a GWT thing), and I eventually
>> get a "cannot read property 'init' of undefined".
>>
>> My question is, could this be causing my problems?
>> for example I am getting this error on this call. Is this because it is
>> not prefaced with $wnd?
>> $.i18n.init({})
>>
> --
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>
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Re: JSNI Question
I never got a response to this. Anyone know if this is an issue?
Any help would be appreciated.
Thanks,
Eric
On Tuesday, December 29, 2015 at 5:55:28 PM UTC-5, Eric Nissan wrote:
>
> I am using JSNI to reference a javascript library. My initial call is
> fine, but then somewhere down they chain I get a null pointer inside the
> javascript library.
>
> I am referencing the library like this
>
> $wnd.TradingView.widget({});
>
> which is a valid reference.
>
> This then seems to load in other javascript files. the object it loads
> are not referenced as $wnd (because that is a GWT thing), and I eventually
> get a "cannot read property 'init' of undefined".
>
> My question is, could this be causing my problems?
> for example I am getting this error on this call. Is this because it is
> not prefaced with $wnd?
> $.i18n.init({})
>
--
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JSNI Question
I am using JSNI to reference a javascript library. My initial call is
fine, but then somewhere down they chain I get a null pointer inside the
javascript library.
I am referencing the library like this
$wnd.TradingView.widget({});
which is a valid reference.
This then seems to load in other javascript files. the object it loads are
not referenced as $wnd (because that is a GWT thing), and I eventually get
a "cannot read property 'init' of undefined".
My question is, could this be causing my problems?
for example I am getting this error on this call. Is this because it is
not prefaced with $wnd?
$.i18n.init({})
--
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Re: JSNI Question
On Thursday, December 20, 2012 1:10:00 AM UTC+1, EMan wrote:
>
> How do I call a JSNI method from another JSNI Method? for example, how
> can I get something1 to call something2?
>
> public static native void something1() /*-{
> something2();
> }-*/;
>
> public static native void something2() /*-{
> $wind.alert("something2");
> }-*/;
>
> Thanks.
>
Like any other Java method:
public static native void something1() /*-{
@my.app.client.MyClass::something2()();
}-*/;
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JSNI Question
How do I call a JSNI method from another JSNI Method? for example, how can
I get something1 to call something2?
public static native void something1() /*-{
something2();
}-*/;
public static native void something2() /*-{
$wind.alert("something2");
}-*/;
Thanks.
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JSNI question
Is there a way I can get the obfuscated name of a JAVA object's field from within a JSNI method? I can get the actual value by using: [instance-exp...@class-name::field-name but what I want is just the @class-name::field-name as a string. The compiler gives an error if I omit the instance expression. -- 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: Simple JavaScript/JSNI question: how to setup a function on the enclosing doc from inside an iframe
Try
private native void publish(MyWidget widget) /*-{
$doc.myFunction =
widg...@com.myco.myapp::myMethod()();
}-*/;
Then within the actual page, document.myFunction()
On Sat, May 23, 2009 at 1:43 PM, BR wrote:
>
> For a reasons too long to explain here, my app is currently getting
> deployed in an iframe. I need to use JSNI to set up a JavaScript
> callback into my application. Both the iframe and the enclosing doc
> are loaded from the the same docbase, so there should be no security
> issues.
>
>
>private native void publish(MyWidget widget) /*-{
>$wnd..myFunction =
> widg...@com.myco.myapp::myMethod()();
> }-*/;
>
> I am wondering what should go in . I
> tried parent, parent.window - but I am no JS expert.
>
> Thanks in advance!
> BR
> >
>
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Simple JavaScript/JSNI question: how to setup a function on the enclosing doc from inside an iframe
For a reasons too long to explain here, my app is currently getting
deployed in an iframe. I need to use JSNI to set up a JavaScript
callback into my application. Both the iframe and the enclosing doc
are loaded from the the same docbase, so there should be no security
issues.
private native void publish(MyWidget widget) /*-{
$wnd..myFunction =
widg...@com.myco.myapp::myMethod()();
}-*/;
I am wondering what should go in . I
tried parent, parent.window - but I am no JS expert.
Thanks in advance!
BR
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Re: JSNI question (extending ManagedIFramePanel, wrapping some other methods)
On 22 mar, 20:51, DanG wrote:
> public native Document getFrameDocument()/*-{
> var panel =
> th...@com.gwtext.client.widgets.component::getOrCreateJsObj()();
> var doc = panel.getFrameDocument();
> //alert(doc);
> if (doc)
> return doc;
> return null;
> }-*/;
>
> if in my native javascript code (using a 3rd party library, i'm
> wrapping ManagedIFrame extension) I get back an object HTMLDocument.
> Can I just return this to a com.google.gwt.dom.client.Document? no
> type conversion needed?
Right.
(actually, you could return any javascript object --anything that's
not a String, Number or Boolean--, it would work... until you try to
call a method or access a field, that would most likely not exist on
the given object).
> well it doesn't seem to work and not sure how
> to proceed for debugging this.
>
> The commented out alert tells me me I have a [object HTMLDocument]
>
> but when I try to call methods (i.e. getNodeValue) on the returned
> document the debugger tells me (in eclipse)
> 'Method "getNodeValue" with signature "()Ljava/lang/String;" is not
> applicable on this object'
Evaluating things from the debugger just doesn't work for
JavaScriptObject's (or any "native"/JSNI method), it's a known issue
that won't be fixed anytime soon:
http://code.google.com/p/google-web-toolkit/issues/detail?id=2912
> How do I turn this HTMLDocument into a working Document? Obviously
> something I'm missing because I'm not familiar with this technology or
> the library in question.
Your code is OK, you just cannot use the debugger facilities...
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JSNI question (extending ManagedIFramePanel, wrapping some other methods)
public native Document getFrameDocument()/*-{
var panel =
th...@com.gwtext.client.widgets.component::getOrCreateJsObj()();
var doc = panel.getFrameDocument();
//alert(doc);
if (doc)
return doc;
return null;
}-*/;
if in my native javascript code (using a 3rd party library, i'm
wrapping ManagedIFrame extension) I get back an object HTMLDocument.
Can I just return this to a com.google.gwt.dom.client.Document? no
type conversion needed? well it doesn't seem to work and not sure how
to proceed for debugging this.
The commented out alert tells me me I have a [object HTMLDocument]
but when I try to call methods (i.e. getNodeValue) on the returned
document the debugger tells me (in eclipse)
'Method "getNodeValue" with signature "()Ljava/lang/String;" is not
applicable on this object'
the watch expression doc.toString() tells me
'An exception occurred:
com.google.gwt.core.client.JavaScriptException'
but I imagine this might be happening in the debugger only for the
toString part.
How do I turn this HTMLDocument into a working Document? Obviously
something I'm missing because I'm not familiar with this technology or
the library in question.
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JSNI question
Hi,
I need to create my own date class to handle UTC. When I try to
construct a MyDate object,
I get a "java.lang.NoSuchFieldError: mydate" exception in this code:
private native void init(double date) /*-{
this.mydate = new Date(date);
}-*/;
Anybody know why?
thanks for any help
-Ben
PS.
Here's the exception:
[WARN] Malformed JSNI reference 'mydate'; expect subsequent failures
java.lang.NoSuchFieldError: mydate
at com.google.gwt.dev.shell.CompilingClassLoader
$DispatchClassInfoOracle.getDispId(CompilingClassLoader.java:119)
at
com.google.gwt.dev.shell.CompilingClassLoader.getDispId(CompilingClassLoader.java:
531)
at
com.google.gwt.dev.shell.moz.GeckoDispatchAdapter.setField(GeckoDispatchAdapter.java:
105)
[..skipped..]
at
com.google.gwt.dev.shell.JavaScriptHost.invokeNativeVoid(JavaScriptHost.java:
107)
at edu.mit.ll.wx.share.client.MyDate.init(MyDate.java)
at edu.mit.ll.wx.share.client.MyDate.(MyDate.java:23)
at edu.mit.ll.wx.share.client.Main.onModuleLoad(Main.java:205)
[..skipped..]
at com.google.gwt.dev.shell.moz.BrowserWidgetMoz.access
$000(BrowserWidgetMoz.java:35)
Here's my code:
public class MyDate
{
public MyDate(long millisec) {
init(millisec);
}
private native void init(double date) /*-{
this.mydate = new Date(date);
}-*/;
public native int getUTCFullYear() /*-{
return this.mydate.getUTCFullYear();
}-*/;
- Hide quoted text -
- Show quoted text -
}
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JSNI question
Hi,
I need to create my own date class to handle UTC. When I try to
construct a MyDate object,
I get a "java.lang.NoSuchFieldError: mydate" exception in this code:
private native void init(double date) /*-{
this.mydate = new Date(date);
}-*/;
Anybody know why?
thanks for any help
-Ben
PS.
Here's the exception:
[WARN] Malformed JSNI reference 'mydate'; expect subsequent failures
java.lang.NoSuchFieldError: mydate
at com.google.gwt.dev.shell.CompilingClassLoader
$DispatchClassInfoOracle.getDispId(CompilingClassLoader.java:119)
at
com.google.gwt.dev.shell.CompilingClassLoader.getDispId(CompilingClassLoader.java:
531)
at
com.google.gwt.dev.shell.moz.GeckoDispatchAdapter.setField(GeckoDispatchAdapter.java:
105)
[..skipped..]
at
com.google.gwt.dev.shell.JavaScriptHost.invokeNativeVoid(JavaScriptHost.java:
107)
at edu.mit.ll.wx.share.client.MyDate.init(MyDate.java)
at edu.mit.ll.wx.share.client.MyDate.(MyDate.java:23)
at edu.mit.ll.wx.share.client.Main.onModuleLoad(Main.java:205)
[..skipped..]
at com.google.gwt.dev.shell.moz.BrowserWidgetMoz.access
$000(BrowserWidgetMoz.java:35)
Here's my code:
public class MyDate
{
public MyDate(long millisec) {
init(millisec);
}
private native void init(double date) /*-{
this.mydate = new Date(date);
}-*/;
public native int getUTCFullYear() /*-{
return this.mydate.getUTCFullYear();
}-*/;
- Hide quoted text -
- Show quoted text -
}
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JSNI question
Hi,
I need to create my own date class to handle UTC. When I try to
construct a MyDate object,
I get a "java.lang.NoSuchFieldError: mydate" exception in this code:
private native void init(double date) /*-{
this.mydate = new Date(date);
}-*/;
Anybody know why?
thanks for any help
-Ben
PS.
Here's the exception:
[WARN] Malformed JSNI reference 'mydate'; expect subsequent failures
java.lang.NoSuchFieldError: mydate
at com.google.gwt.dev.shell.CompilingClassLoader
$DispatchClassInfoOracle.getDispId(CompilingClassLoader.java:119)
at
com.google.gwt.dev.shell.CompilingClassLoader.getDispId(CompilingClassLoader.java:
531)
at
com.google.gwt.dev.shell.moz.GeckoDispatchAdapter.setField(GeckoDispatchAdapter.java:
105)
[..skipped..]
at
com.google.gwt.dev.shell.JavaScriptHost.invokeNativeVoid(JavaScriptHost.java:
107)
at edu.mit.ll.wx.share.client.MyDate.init(MyDate.java)
at edu.mit.ll.wx.share.client.MyDate.(MyDate.java:23)
at edu.mit.ll.wx.share.client.Main.onModuleLoad(Main.java:205)
[..skipped..]
at com.google.gwt.dev.shell.moz.BrowserWidgetMoz.access
$000(BrowserWidgetMoz.java:35)
Here's my code:
public class MyDate
{
public MyDate(long millisec) {
init(millisec);
}
private native void init(double date) /*-{
this.mydate = new Date(date);
}-*/;
public native int getUTCFullYear() /*-{
return this.mydate.getUTCFullYear();
}-*/;
}
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