Examples of org.apache.tapestry5.services.javascript.JavaScriptStack

Package org.apache.tapestry5.services.javascript

Examples of org.apache.tapestry5.services.javascript.JavaScriptStack

org.apache.tapestry5.services.javascript.JavaScriptStack
A high level description of a group of related JavaScript libraries and stylesheets. The built-in "core" stack is used to define the core JavaScript libraries needed by Tapestry (currently, this includes Prototype and Scriptaculous, as well as Tapestry-specific libraries). Other component libraries may define additional stacks for related sets of resources, for example, to bundle together some portion of the ExtJS or YUI libraries.
A JavaScript assets of a stack may (when {@linkplain SymbolConstants#COMBINE_SCRIPTS enabled}) be exposed to the client as a single URL (identifying the stack by name). The individual assets are combined into a single virtual asset, which is then streamed to the client.
Implementations may need to inject the {@link ThreadLocale} service in order to determine the current locale (if anyof the JavaScript library or stylesheet assets are localized). They will generally need to inject the {@link AssetSource} service as well. @since 5.2.0 @see ThreadLocale

        this.configuration = configuration;
    }


    public JavaScriptStack getStack(String name)
    {
        JavaScriptStack stack = findStack(name);


        if (stack == null)
        {
            throw new UnknownValueException(String.format("No JavaScriptStack with name '%s'.", name),
                    new AvailableValues("Configured JavaScript stacks", configuration));

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        this.combineScripts = combineScripts;
    }


    public List<String> constructPathsForJavaScriptStack(String stackName)
    {
        JavaScriptStack stack = javascriptStackSource.getStack(stackName);


        List<Asset> assets = stack.getJavaScriptLibraries();


        // When combine scripts is true, we want to build the virtual aggregated JavaScript ... but only
        // if there is more than one library asset, or any modules.
        if (combineScripts && stack.getJavaScriptAggregationStrategy().enablesCombine())
        {
            boolean needsVirtual = (assets.size() > 1) || (!stack.getModules().isEmpty());


            if (needsVirtual)
            {
                return combinedStackURL(stackName, stack);
            }

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    @Override
    public StreamableResource getStreamableResource(Resource baseResource, StreamableResourceProcessing processing, ResourceDependencies dependencies) throws IOException
    {
        JavaScriptStack stack = javaScriptStackSource.findStackForJavaScriptLibrary(baseResource);


        if (stack != null && !stack.getJavaScriptAggregationStrategy().enablesMinimize())
        {
            request.setAttribute(TapestryConstants.DISABLE_JAVASCRIPT_MINIMIZATION, true);
        }


        try

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        if (compressed)
        {
            checksum = checksum.substring(1);
        }


        final JavaScriptStack stack = stackSource.findStack(stackName);


        if (stack == null)
        {
            logger.warn(String.format("JavaScript stack '%s' not found.", stackName));
            return false;
        }




        // Yes, I have a big regret that the JavaScript stack stuff relies on this global, rather than
        // having it passed around properly.


        localizationSetter.setNonPersistentLocaleFromLocaleName(localeName);


        StreamableResource resource =
                tracker.perform(String.format("Assembling JavaScript asset stack '%s' (%s)",
                                stackName, localeName),
                        new IOOperation<StreamableResource>()
                        {
                            public StreamableResource perform() throws IOException
                            {


                                return javaScriptStackAssembler.assembleJavaScriptResourceForStack(stackName, compressed,
                                        stack.getJavaScriptAggregationStrategy());


                            }
                        });

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            StreamableResource uncompressed = assembleJavascriptResourceForStack(parameters.disableCompress());


            return new CompressedStreamableResource(uncompressed, checksumGenerator);
        }


        JavaScriptStack stack = stackSource.getStack(parameters.stackName);


        return assembleStreamableForStack(parameters.locale.toString(), parameters, stack.getJavaScriptLibraries(), stack.getModules());
    }

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    private StreamableResource assembleStackContent(String localeName, String stackName) throws IOException
    {
        localizationSetter.setNonPeristentLocaleFromLocaleName(localeName);


        JavaScriptStack stack = javascriptStackSource.getStack(stackName);
        List<Asset> libraries = stack.getJavaScriptLibraries();


        StreamableResource stackContent = assembleStackContent(libraries);


        return minificationEnabled ? resourceMinimizer.minimize(stackContent) : stackContent;
    }

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    }


    private void trainForEmptyCoreStack(DocumentLinker linker, JavaScriptStackSource stackSource,
            JavaScriptStackPathConstructor pathConstructor)
    {
        JavaScriptStack stack = mockJavaScriptStack();


        expect(stackSource.getStack(InternalConstants.CORE_STACK_NAME)).andReturn(stack);
        expect(pathConstructor.constructPathsForJavaScriptStack(InternalConstants.CORE_STACK_NAME)).andReturn(
                Collections.<String> emptyList());
        expect(stack.getStylesheets()).andReturn(Collections.<StylesheetLink> emptyList());


        expect(stack.getInitialization()).andReturn(null);


        expect(stack.getStacks()).andReturn(Collections.<String> emptyList());
    }

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    }


    private void trainForCoreStack(DocumentLinker linker, JavaScriptStackSource stackSource,
            JavaScriptStackPathConstructor pathConstructor)
    {
        JavaScriptStack stack = mockJavaScriptStack();


        StylesheetLink stylesheetLink = new StylesheetLink("style.css");


        expect(stackSource.getStack(InternalConstants.CORE_STACK_NAME)).andReturn(stack);
        expect(pathConstructor.constructPathsForJavaScriptStack(InternalConstants.CORE_STACK_NAME)).andReturn(
                CollectionFactory.newList("stack1.js", "stack2.js"));
        expect(stack.getStylesheets()).andReturn(CollectionFactory.newList(stylesheetLink));


        expect(stack.getInitialization()).andReturn("stackInit();");


        expect(stack.getStacks()).andReturn(Collections.<String> emptyList());


        linker.addScriptLink("stack1.js");
        linker.addScriptLink("stack2.js");
        linker.addStylesheetLink(stylesheetLink);
    }

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        trainForEmptyCoreStack(linker, stackSource, pathConstructor);


        Asset library1 = mockAsset("mylib1.js");
        Asset library2 = mockAsset("mylib2.js");


        JavaScriptStack mystack = mockJavaScriptStack();


        expect(stackSource.getStackNames()).andReturn(Arrays.asList("mystack"));
        expect(stackSource.getStack("mystack")).andReturn(mystack).atLeastOnce();


        expect(mystack.getStacks()).andReturn(Collections.<String> emptyList());
        expect(mystack.getJavaScriptLibraries()).andReturn(Arrays.asList(library1, library2));


        expect(pathConstructor.constructPathsForJavaScriptStack("mystack")).andReturn(
                Arrays.asList("stacks/mystack.js"));
        expect(mystack.getStylesheets()).andReturn(Collections.<StylesheetLink> emptyList());


        expect(mystack.getInitialization()).andReturn(null);


        linker.addScriptLink("stacks/mystack.js");


        replay();

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        JavaScriptStackSource stackSource = mockJavaScriptStackSource();
        JavaScriptStackPathConstructor pathConstructor = mockJavaScriptStackPathConstructor();


        trainForCoreStack(linker, stackSource, pathConstructor);


        JavaScriptStack stack = mockJavaScriptStack();


        StylesheetLink stylesheetLink = new StylesheetLink("stack.css");


        expect(stackSource.getStack("custom")).andReturn(stack);
        expect(pathConstructor.constructPathsForJavaScriptStack("custom")).andReturn(
                CollectionFactory.newList("stack.js"));
        expect(stack.getStylesheets()).andReturn(CollectionFactory.newList(stylesheetLink));


        expect(stack.getInitialization()).andReturn("customInit();");


        List<String> stacks = Collections.emptyList();
        expect(stack.getStacks()).andReturn(stacks);


        linker.addScriptLink("stack.js");
        linker.addStylesheetLink(stylesheetLink);


        linker.addScript(InitializationPriority.IMMEDIATE, "stackInit();");

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