Examples of org.apache.click.element.JsScript

org.apache.click.element.JsScript
se lazy loading to ensure the JS is only added the // first time this method is called. if (headElements == null) { // Get the head elements from the super implementation headElements = super.getHeadElements(); JsScript jsScript = new JsScript("alert('Hello World!);"); headElements.add(jsScript); } return headElements; } } The jsScript instance will be rendered as follows:
```
 <script type="text/javascript"> alert('Hello World'); </script> 
```
Below is an example showing how to render inline Javascript from a Velocity template.
First we create a Velocity template (/js/mycorp-template.js) which contains the variable $divId that must be replaced at runtime with the real Div ID attribute:
```
 hide = function() { var div = document.getElementById('$divId'); div.style.display = "none"; } 
```
Next is the Page implementation:
```
 public class MyPage extends Page { public List getHeadElements() { // We use lazy loading to ensure the JS is only added the // first time this method is called. if (headElements == null) { // Get the head elements from the super implementation headElements = super.getHeadElements(); // Create a default template model to pass to the template Map model = ClickUtils.createTemplateModel(this, getContext()); // Add the id of the div to hide model.put("divId", "myDiv"); // Specify the path to the JavaScript template String templatePath = "/js/mycorp-template.js"; // Create the inline JavaScript for the given template path and model JsScript jsScript = new JsScript(templatePath, model); headElements.add(jsScript); } return headElements; } } 
```
The jsScript instance will render as follows (assuming the context path is myApp):
```
 <script type="text/javascript"> hide = function() { var div = document.getElementById('myDiv'); div.style.display = "none"; } </style> 
```
Character data (CDATA) support
Sometimes it is necessary to wrap inline {@link JsScript JavaScript}in CDATA tags. Two use cases are common for doing this:
- For XML parsing: When using Ajax one often send back partial XML snippets to the browser, which is parsed as valid XML. However the XML parser will throw an error if the content contains reserved XML characters such as '&', '<' and '>'. For these situations it is recommended to wrap the script content inside CDATA tags.
- XHTML validation: if you want to validate your site using an XHTML validator e.g: http://validator.w3.org/.
To wrap the JavaScript content in CDATA tags, set {@link #setCharacterData(boolean)} to true. Below is shown how the JavaScriptcontent would be rendered:
```
 <script type="text/javascript"> /∗<![CDATA[∗/ if(x < y) alert('Hello'); /∗]]>∗/ </script> 
```
Notice the CDATA tags are commented out which ensures older browsers that don't understand the CDATA tag, will ignore it and only process the actual content.
For an overview of XHTML validation and CDATA tags please see http://javascript.about.com/library/blxhtml.htm.

                    // Remove Click's version indicator from src attribute
                    removeVersionIndicator(jsImport, "src");
                    add(jsImport);


                } else {
                    JsScript jsScript = asJsScript(lines[i]);
                    setUnique(jsScript, jsScript.getContent().toString());
                    add(jsScript);


                }
            } else {
                throw new IllegalArgumentException("Unknown include type: " + lines[i]);

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            buffer.append('\n');
        }


        // Then include all the scripts e.g. <script>...</script>
        for (Iterator it = jsScripts.iterator(); it.hasNext();) {
            JsScript jsScript = (JsScript) it.next();
            jsScript.render(buffer);
            buffer.append('\n');
        }
    }

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     *
     * @param line the HTML import line to convert to a JavaScript instance
     * @return a Javascript instance
     */
    private JsScript asJsScript(String line) {
        JsScript jsScript = new JsScript();
        copyAttributes(jsScript, line);
        jsScript.setContent(extractJsContent(line, jsScript));
        return jsScript;
    }

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        // Setup showBorders checkbox Javascript using a JsScript HEAD element


        // First create a JsScript instance for the JavaScript template
        // '/form-head.htm'
        JsScript jsScript = new JsScript("/form-head.htm", new HashMap());


        // Then add a JsScript element to the Page HEAD elements
        getHeadElements().add(jsScript);
    }

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            // Add the ID of a target element in the Page template to replace
            // with new data, in this example the target is 'customerDetails'
            model.put("target", "customerDetails");


            // Include the ajax-select.js template
            headElements.add(new JsScript("/ajax/ajax-select.js", model));
        }


        return headElements;
    }

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        if (headElements == null) {
            headElements = super.getHeadElements();


            headElements.add(new CssImport("/assets/css/imports.css"));
            headElements.add(new JsImport("/assets/js/imports.js"));
            headElements.add(new JsScript("addLoadEvent(function() { initMenu(); });"));
        }
        return headElements;
    }

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            jsModel.put("linkId", '#' + link.getId());


            String content =
                context.renderTemplate("/general/page-head-demo.js", jsModel);


            headElements.add(new JsScript(content));
        }
        return headElements;
    }

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            Map model = ClickUtils.createTemplateModel(this, getContext());
            model.put("pageSize", pageSize);


            // Note the actual JavaScript necessary to setup the dynamic scrolling
            // is specified in the Page JavaScript template: ajax-live-scroller.js.
            headElements.add(new JsScript("/ajax/ajax-live-scroller.js", model));
        }
        return headElements;
    }

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            // Add the ID of a target element in the Page template to replace
            // with new data, in this example the target is 'customerDetails'
            model.put("target", "customerDetails");


            // Include the Page associated JavaScript template
            headElements.add(new JsScript("/ajax/ajax-select.js", model));
        }


        return headElements;
    }

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            headElements.add(new JsImport("/assets/js/jquery.tools.min.js"));
            headElements.add(new CssImport("/assets/css/tabs-accordion.css"));


            // Note the actual JavaScript necessary to setup the accordion is
            // specified in the Page JavaScript template -> ajax-accordion.js.
            headElements.add(new JsScript("/ajax/ajax-accordion.js", new HashMap()));


            // Alternatively, the JsScript below could be used to add
            // the necessary JavaScript to setup the accordion, for example:
            /* String content =
                "$(document).ready(function() {"

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Related Classes of org.apache.click.element.JsScript

org.apache.click.Context

org.apache.click.examples.control.RichTextArea

org.apache.click.examples.page.ajax.accordion.AccordionPage

org.apache.click.examples.page.ajax.AjaxAccordion

org.apache.click.examples.page.ajax.AjaxLiveScroller

org.apache.click.examples.page.ajax.AjaxSelect

org.apache.click.examples.page.ajax.form.AdvancedFormAjaxPage

org.apache.click.examples.page.ajax.form.SimpleFormAjaxPage

org.apache.click.examples.page.ajax.scroller.AjaxLiveScroller

org.apache.click.examples.page.ajax.select.AjaxSelect

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Examples of org.apache.click.element.JsScript

Character data (CDATA) support

Related Classes of org.apache.click.element.JsScript