Examples of org.apache.tapestry.engine.ILink

org.apache.tapestry.engine.ILink
Define a link that may be generated as part of a page render. The vast majority of links are tied to {@link IEngineService services} and are, infact, callbacks. A small number, such as those generated by {@link org.apache.tapestry.link.GenericLink} component, are to arbitrary locations.In addition, ILink differentiates between the path portion of the link, and any query parameters encoded into a link, primarily to benefit {@link org.apache.tapestry.form.Form}, which needs to encode the query parameters as hidden form fields.
In addition, an ILink is responsible for passing constructed URLs through {@link org.apache.tapestry.IRequestCycle#encodeURL(String)}as needed. @author Howard Lewis Ship @version $Id: ILink.java 243791 2004-02-19 17:38:13Z hlship $ @since 3.0

            return;
        }


        if (methodResult instanceof ILink)
        {
            ILink link = (ILink) methodResult;


            String url = link.getAbsoluteURL();


            cycle.sendRedirect(url);
            return;
        }

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        // is not handy.


        if (_assetService == null)
            _assetService = cycle.getEngine().getService(Tapestry.ASSET_SERVICE);


        ILink link = _assetService.getLink(cycle, path);


        return link.getURL();
    }

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        // for the current page.


        IEngineService pageService = getPageService();
        String pageName = getPage().getPageName();


        ILink link = pageService.getLink(false, pageName);


        StringBuffer buffer = new StringBuffer();
        buffer.append(refresh);
        buffer.append("; URL=");
        buffer.append(link.getAbsoluteURL());


        writeMetaTag(writer, "http-equiv", "Refresh", buffer.toString());
    }

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    public abstract IEngineService getPageService();


    protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle)
    {
        IEngineService pageService = getPageService();
        ILink link = pageService.getLink(false, getTargetPage());


        writer.beginEmpty("frame");
        writer.attribute("src", link.getURL());


        renderInformalParameters(writer, cycle);


        writer.closeTag();
    }

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        parameters.put(ServiceConstants.SERVICE, Tapestry.HOME_SERVICE);


        MockControl factoryc = newControl(LinkFactory.class);
        LinkFactory factory = (LinkFactory) factoryc.getMock();


        ILink link = (ILink) newMock(ILink.class);
        IRequestCycle cycle = newCycle();


        factory.constructLink(cycle, parameters, true);
        factoryc.setReturnValue(link);

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        renderInformalParameters(writer, cycle);
        
        writer.end();
        renderDelegateSuffix(writer, cycle);
        
        ILink link = getDirectService().getLink(true, new DirectServiceParameter(this));
        
        Map parms = new HashMap();
        parms.put("id", getClientId());
        
        JSONObject json = new JSONObject();
        json.put("dataUrl", link.getURL() + "&filter=%{searchString}");
        json.put("mode", MODE_REMOTE);
        json.put("widgetId", getName());
        json.put("name", getName());
        
        IPropertySelectionModel model = getModel();

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        // Build a URL to select that component, as if by the captive
        // component itself (it's a Direct).


        DirectServiceParameter dsp = new DirectServiceParameter(this, serviceParameters);
        ILink link = service.getLink(false, dsp);


        writer.begin("span");
        writer.attribute("class", "jwc-tag");


        writer.print("<");
        writer.print(token.getTag());


        writer.print(" jwcid=\"");


        writer.begin("span");
        writer.attribute("class", "jwc-id");


        writer.begin("a");
        writer.attribute("href", link.getURL());
        writer.print(id);


        writer.end(); // <a>
        writer.end(); // <span>
        writer.print('"');

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        PortletURL url = newPortletURL();
        QueryParameterMap parameters = newParameters();


        replayControls();


        ILink link = new PortletLink(cycle, url, parameters, false);


        try
        {
            link.getAbsoluteURL();
            unreachable();
        }
        catch (UnsupportedOperationException ex)
        {
            // Accept.
        }


        try
        {
            link.getAbsoluteURL(null, null, -1, null, false);
            unreachable();
        }
        catch (UnsupportedOperationException ex)
        {
            // Accept.

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        parameters.getParameterNames();
        control.setReturnValue(names);


        replayControls();


        ILink link = new PortletLink(cycle, url, parameters, false);


        assertSame(names, link.getParameterNames());


        verifyControls();
    }

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        parameters.getParameterValues("bedrock");
        control.setReturnValue(values);


        replayControls();


        ILink link = new PortletLink(cycle, url, parameters, false);


        assertSame(values, link.getParameterValues("bedrock"));


        verifyControls();
    }

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