Examples of org.apache.click.Context

org.apache.click.Context
Provides the HTTP request context information for pages and controls. A new Context object is created for each Page request. The request Context object can be obtained from the thread local variable via the {@link Context#getThreadLocalContext()} method.

    @Override
    public List<Element> getHeadElements() {
        if (headElements == null) {
            headElements = super.getHeadElements();


            Context context = getContext();
            String versionIndicator = ClickUtils.getResourceVersionIndicator(context);


            headElements.add(new CssImport("/click/extras-control.css", versionIndicator));
        }
        return headElements;

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     *
     * @return the HTML HEAD elements for the control
     */
    @Override
    public List<Element> getHeadElements() {
        Context context = getContext();
        String versionIndicator = ClickUtils.getResourceVersionIndicator(context);


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


            JsImport jsImport = new JsImport("/click/keyboard.js", versionIndicator);
            jsImport.setAttribute("charset", "UTF-8");
            headElements.add(jsImport);
            headElements.add(new CssImport("/click/keyboard.css", versionIndicator));
        }


        String fieldId = getId();
        JsScript script = new JsScript();
        script.setId(fieldId + "_js_setup");


        if (!headElements.contains(script)) {
            HtmlStringBuffer buffer = new HtmlStringBuffer(150);
            buffer.append("var keyboard_png_path=\"");
            buffer.append(context.getRequest().getContextPath());
            buffer.append("/click/keyboard");
            buffer.append(versionIndicator);
            buffer.append(".png\"");
            script.setContent(buffer.toString());
            headElements.add(script);

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    public List<Element> getHeadElements() {


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


            Context context = getContext();
            String versionIndicator = ClickUtils.getResourceVersionIndicator(context);


            if (isJavascriptEnabled()) {
                headElements.add(new JsImport("/click/tree/checkbox-tree.js",
                    versionIndicator));

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    @Override
    public List<Element> getHeadElements() {
        if (headElements == null) {
            headElements = super.getHeadElements();


            Context context = getContext();
            String versionIndicator = ClickUtils.getResourceVersionIndicator(context);


            headElements.add(new CssImport("/click/extras-control.css", versionIndicator));
        }
        return headElements;

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     *
     * @param value the ActionButton value parameter
     * @return the ActionButton JavaScript href attribute
     */
    public String getOnClick(Object value) {
        Context context = getContext();
        String uri = ClickUtils.getRequestURI(context.getRequest());


        HtmlStringBuffer buffer =
            new HtmlStringBuffer(uri.length() + getName().length() + 40);


        buffer.append(uri);
        buffer.append("?");
        buffer.append(ACTION_BUTTON);
        buffer.append("=");
        buffer.append(getName());


        if (value != null) {
            buffer.append("&amp;");
            buffer.append(VALUE);
            buffer.append("=");
            buffer.append(ClickUtils.encodeUrl(value, context));
        }


        if (hasParameters()) {
            for (String name : getParameters().keySet()) {
                if (!name.equals(ACTION_BUTTON) && !name.equals(VALUE)) {
                    Object paramValue = getParameters().get(name);
                    String encodedValue
                        = ClickUtils.encodeUrl(paramValue, context);
                    buffer.append("&amp;");
                    buffer.append(name);
                    buffer.append("=");
                    buffer.append(encodedValue);
                }
            }
        }


        return "javascript:document.location.href='"
               + context.getResponse().encodeURL(buffer.toString())
               + "';";
    }

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     * This method binds the submitted request value to the ActionLink's
     * value.
     */
    @SuppressWarnings("unchecked")
    public void bindRequestValue() {
        Context context = getContext();
        if (context.isMultipartRequest()) {
            return;
        }


        clicked = getName().equals(context.getRequestParameter(ACTION_BUTTON));


        if (clicked) {
            HttpServletRequest request = context.getRequest();


            Enumeration paramNames = request.getParameterNames();


            while (paramNames.hasMoreElements()) {
                String name = paramNames.nextElement().toString();

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     *
     * @return true to continue Page event processing or false otherwise
     */
    public boolean onProcess() {
        if (isDisabled()) {
            Context context = getContext();


            // Switch off disabled property if control has incoming request
            // parameter. Normally this means the field was enabled via JS
            if (context.hasRequestParameter(getName())) {
                setDisabled(false);
            } else {
                // If field is disabled skip process event
                return true;
            }

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     * @return true to continue Page event processing or false otherwise
     */
    @Override
    public boolean onProcess() {
        if (isDisabled()) {
            Context context = getContext();


            // Switch off disabled property if control has incoming request
            // parameter. Normally this means the field was enabled via JS
            if (context.hasRequestParameter(getName())) {
                setDisabled(false);
            } else {
                // If field is disabled skip process event
                return true;
            }

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    @Override
    public List<Element> getHeadElements() {
        if (headElements == null) {
            headElements = super.getHeadElements();


            Context context = getContext();
            String versionIndicator = ClickUtils.getResourceVersionIndicator(context);


            headElements.add(new JsImport("/click/extras-control.js", versionIndicator));
        }
        return headElements;

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    @Override
    public List<Element> getHeadElements() {
        if (headElements == null) {
            headElements = super.getHeadElements();


            Context context = getContext();
            String versionIndicator = ClickUtils.getResourceVersionIndicator(context);


            headElements.add(new JsImport("/click/extras-control.js", versionIndicator));
        }
        return headElements;

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Related Classes of org.apache.click.Context

org.apache.click.control.ActionButton

org.apache.click.control.ActionLink

org.apache.click.control.Button

org.apache.click.control.Checkbox

org.apache.click.control.Field

org.apache.click.control.FileField

org.apache.click.control.Form

org.apache.click.control.ImageSubmit

org.apache.click.control.PageLink

org.apache.click.control.Panel

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