I want to use javascript library in java source code. I read sth about it and I read, that I should use ScriptInjector
. This class has 2 inner classes: ScriptInjector.FromString
and ScriptInjector.FromUrl
. I want to load javascript library from local file, so I should use from string. How to do it?
ScriptInjector.fromString("myLibrary.js");
does not work. Where to add library?
I want to use javascript library in java source code. I read sth about it and I read, that I should use ScriptInjector
. This class has 2 inner classes: ScriptInjector.FromString
and ScriptInjector.FromUrl
. I want to load javascript library from local file, so I should use from string. How to do it?
ScriptInjector.fromString("myLibrary.js");
does not work. Where to add library?
Share Improve this question edited Jul 8, 2014 at 8:27 Anders R. Bystrup 16.1k11 gold badges63 silver badges58 bronze badges asked Jul 7, 2014 at 12:33 user3240883user3240883 3094 silver badges11 bronze badges 1- I tried this: simon.pamies.de/archives/194 , but this is not working. – user3240883 Commented Jul 7, 2014 at 12:37
2 Answers
Reset to default 61) fromUrl
- creates script
tag with specified src attribute and appends it to the page. E.g.
ScriptInjector.fromUrl("http://example./my-script.js").inject();
will simply produce:
<script type="text/javascript" src="http://example./my-script.js" />
You can host your files on the web site and inject each of them on demand
2) fromString
- creates script
tag with specified body of the script, so:
ScriptInjector.fromString("alert('Injected!')").inject();
will give
<script type="text/javascript">
alert('Injected!')
</script>
In this case JS code is a part of your piled GWT code and browser doesn't require to load it with separate request. I think it is possible to include native JS file into piled output with TextResource
. So you need following:
Define resources
public interface JsResources extends ClientBundle {
final JsResources INSTANCE = GWT.create(JsResources.class);
@Source("first.js")
TextResource firstScript();
@Source("second.js")
TextResource secondScript();
}
Inject required script
ScriptInjector.fromString(JsResources.INSTANCE.firstScript().getText()).inject();
To use .fromString()
you'd have to load the JS into a String and pass that.
If you need to load the script using the .fromUrl()
you'll have to put it somewhere "Internet" accessible, since the inject()
ends up in
private static native void nativeSetSrc(JavaScriptObject element, String url) /*-{
element.src = url;
}-*/;
(See it here)
So: Extract or otherwise expose the script to your webserver.
Cheers,