I am following an example in http://forums.smartclient.com/showthread.php?t=19748.
Here is the canvas that I'd like to embedded into my SmartGWT application. But I get an exception to change the background color.
public class ExternalArea extends Canvas {
public ExternalArea() {
setRedrawOnResize(false);
}
@Override
public String getInnerHTML() {
return "<textarea id='lorikeet'"
+ " style='width:230;height:250'></textarea>";
}
@Override
protected void onDraw() {
System.out.println("Inner html is " + getInnerHTML());
changeBackground("lorikeet");
super.onDraw();
}
private static native void changeBackground(String id) /*-{
$wnd.$("#" + id).css("background-color", "red");
}-*/;
}
May 14, 2014 2:38:49 PM com.google.gwt.logging.server.RemoteLoggingService Util logOnServer
SEVERE: CLIENT EXCEPTION: com.google.gwt.core.client.JavaScriptException: (TypeError) @com.google.gwt.core.client.impl.Impl::apply(Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)([JavaScript object(2398), JavaScript object(2397), JavaScript object(2435)]): $wnd.$ is not a function
java.lang.Throwable: (TypeError) @com.google.gwt.core.client.impl.Impl::apply(Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)([JavaScript object(2398), JavaScript object(2397), JavaScript object(2435)]): $wnd.$ is not a function
at com.google.gwt.dev.shell.BrowserChannelServer.invo keJavascript(BrowserChannelServer.java:249)
at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke (ModuleSpaceOOPHM.java:136)
at com.google.gwt.dev.shell.ModuleSpace.invokeNative( ModuleSpace.java:571)
at com.google.gwt.dev.shell.ModuleSpace.invokeNativeO bject(ModuleSpace.java:279)
at com.google.gwt.dev.shell.JavaScriptHost.invokeNati veObject(JavaScriptHost.java:91)
at com.google.gwt.core.client.impl.Impl.apply(Impl.ja va)
at com.google.gwt.core.client.impl.Impl.entry0(Impl.j ava:242)
at sun.reflect.GeneratedMethodAccessor54.invoke(Unkno wn Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.google.gwt.dev.shell.MethodAdaptor.invoke(Meth odAdaptor.java:103)
at com.google.gwt.dev.shell.MethodDispatch.invoke(Met hodDispatch.java:71)
at com.google.gwt.dev.shell.OophmSessionHandler.invok e(OophmSessionHandler.java:172)
at com.google.gwt.dev.shell.BrowserChannelServer.reac tToMessages(BrowserChannelServer.java:293)
at com.google.gwt.dev.shell.BrowserChannelServer.proc essConnection(BrowserChannelServer.java:547)
at com.google.gwt.dev.shell.BrowserChannelServer.run( BrowserChannelServer.java:364)
at java.lang.Thread.run(Thread.java:724)
Here is the canvas that I'd like to embedded into my SmartGWT application. But I get an exception to change the background color.
public class ExternalArea extends Canvas {
public ExternalArea() {
setRedrawOnResize(false);
}
@Override
public String getInnerHTML() {
return "<textarea id='lorikeet'"
+ " style='width:230;height:250'></textarea>";
}
@Override
protected void onDraw() {
System.out.println("Inner html is " + getInnerHTML());
changeBackground("lorikeet");
super.onDraw();
}
private static native void changeBackground(String id) /*-{
$wnd.$("#" + id).css("background-color", "red");
}-*/;
}
May 14, 2014 2:38:49 PM com.google.gwt.logging.server.RemoteLoggingService Util logOnServer
SEVERE: CLIENT EXCEPTION: com.google.gwt.core.client.JavaScriptException: (TypeError) @com.google.gwt.core.client.impl.Impl::apply(Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)([JavaScript object(2398), JavaScript object(2397), JavaScript object(2435)]): $wnd.$ is not a function
java.lang.Throwable: (TypeError) @com.google.gwt.core.client.impl.Impl::apply(Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)([JavaScript object(2398), JavaScript object(2397), JavaScript object(2435)]): $wnd.$ is not a function
at com.google.gwt.dev.shell.BrowserChannelServer.invo keJavascript(BrowserChannelServer.java:249)
at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke (ModuleSpaceOOPHM.java:136)
at com.google.gwt.dev.shell.ModuleSpace.invokeNative( ModuleSpace.java:571)
at com.google.gwt.dev.shell.ModuleSpace.invokeNativeO bject(ModuleSpace.java:279)
at com.google.gwt.dev.shell.JavaScriptHost.invokeNati veObject(JavaScriptHost.java:91)
at com.google.gwt.core.client.impl.Impl.apply(Impl.ja va)
at com.google.gwt.core.client.impl.Impl.entry0(Impl.j ava:242)
at sun.reflect.GeneratedMethodAccessor54.invoke(Unkno wn Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.google.gwt.dev.shell.MethodAdaptor.invoke(Meth odAdaptor.java:103)
at com.google.gwt.dev.shell.MethodDispatch.invoke(Met hodDispatch.java:71)
at com.google.gwt.dev.shell.OophmSessionHandler.invok e(OophmSessionHandler.java:172)
at com.google.gwt.dev.shell.BrowserChannelServer.reac tToMessages(BrowserChannelServer.java:293)
at com.google.gwt.dev.shell.BrowserChannelServer.proc essConnection(BrowserChannelServer.java:547)
at com.google.gwt.dev.shell.BrowserChannelServer.run( BrowserChannelServer.java:364)
at java.lang.Thread.run(Thread.java:724)