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.

     * Bind the request submission, setting the {@link #selectedValues} and
     * sort order if the checkList is sortable.
     */
    public void bindRequestValue() {


        Context context = getContext();


        // Page developer has not initialized options, which are required
        // to support sorting
        if (getOptionList().isEmpty()) {
            return;
        }


        // Load the selected items.
        this.selectedValues = new ArrayList();


        String[] values = context.getRequestParameterValues(getName());


        if (values != null) {
            for (int i = 0; i < values.length; i++) {
                this.selectedValues.add(values[i]);
            }
        }


        if (isSortable()) {
            String[] order = context.getRequest().getParameterValues(
                    getName() + "_order");
            if (order != null) {
                this.sortorder = new ArrayList(order.length);
                for (int i = 0; i < order.length; i++) {
                    String value = order[i];

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     * @see #toString()
     *
     * @param buffer the specified buffer to render the control's output to
     */
    public void render(HtmlStringBuffer buffer) {
        Context context = getContext();
        Map values = new HashMap();


        values.put("id", getId());
        values.put("field", this);
        values.put("path", context.getRequest().getContextPath());


        if (isColor(getValue())) {
            values.put("back_color", getValue());
        } else {
            values.put("back_color", "#FFFFFF");

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                + " AutoCompleteTextField to a parent form or container and"
                + " attach the parent to the Page before calling"
                + " getHeadElements().");
        }


        Context context = getContext();


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


            String versionIndicator = ClickUtils.getResourceVersionIndicator(context);


            headElements.add(new CssImport("/click/extras-control.css",
                versionIndicator));
            headElements.add(new JsImport("/click/control.js", versionIndicator));
            headElements.add(new JsImport("/click/prototype/prototype.js",
                versionIndicator));
            headElements.add(new JsImport("/click/prototype/effects.js",
                versionIndicator));
            headElements.add(new JsImport("/click/prototype/controls.js",
                versionIndicator));
        }


        // Note the addLoadEvent script is recreated and checked if it
        // is contained in the headElement.
        String fieldId = getId();
        JsScript script = new JsScript();
        script.setId(fieldId + "_autocomplete");
        if (!headElements.contains(script)) {
            // Script must be executed as soon as browser dom is ready
            script.setExecuteOnDomReady(true);


            String contextPath = context.getRequest().getContextPath();
            HtmlStringBuffer buffer = new HtmlStringBuffer(150);
            buffer.append("new Ajax.Autocompleter(");
            buffer.append("'").append(fieldId).append("'");
            buffer.append(",'").append(fieldId).append("_auto_complete_div'");
            buffer.append(",'").append(contextPath).append(page.getPath()).append(

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     * @see org.apache.click.Control#onProcess()
     *
     * @return false if an auto complete request, otherwise returns true
     */
    public boolean onProcess() {
        Context context = getContext();
        if (context.isPost()) {
            // If an auto complete POST request then render suggested list,
            // otherwise continue as normal
            if (getForm().isFormSubmission()) {
                return super.onProcess();
            } else if (context.isAjaxRequest()) {
                String criteria = context.getRequestParameter(getName());
                if (criteria != null) {
                    List autoCompleteList = getAutoCompleteList(criteria);
                    renderAutoCompleteList(autoCompleteList);
                    return false;
                }

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     * Bind the request submission, setting the field {@link Submit#clicked},
     * {@link #x} and {@link #y} if defined in the request.
     */
    public void bindRequestValue() {


        Context context = getContext();


        //  Note IE does not submit name
        String xValue = context.getRequestParameter(getName() + ".x");


        if (xValue != null) {
            this.clicked = true;


            try {
                this.x = Integer.parseInt(xValue);
            } catch (NumberFormatException nfe) {
                nfe.printStackTrace();
            }


            String yValue = context.getRequestParameter(getName() + ".y");
            try {
                this.y = Integer.parseInt(yValue);
            } catch (NumberFormatException nfe) {
                nfe.printStackTrace();
            }

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    public String getHref() {
        if (getPageClass() == null) {
            throw new IllegalStateException("target pageClass is not defined");
        }


        Context context = getContext();
        HtmlStringBuffer buffer = new HtmlStringBuffer();


        buffer.append(context.getRequest().getContextPath());


        String pagePath = context.getPagePath(getPageClass());


        if (pagePath != null && pagePath.endsWith(".jsp")) {
            pagePath = StringUtils.replace(pagePath, ".jsp", ".htm");
        }


        buffer.append(pagePath);


        if (hasParameters()) {
            buffer.append("?");


            renderParameters(buffer, getParameters(), context);
        }


        return context.getResponse().encodeURL(buffer.toString());
    }

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     *
     * @param value the ActionLink value parameter
     * @return the ActionLink HTML href attribute
     */
    public String getHref(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_LINK);
        buffer.append("=");
        buffer.append(getName());
        if (value != null) {
            buffer.append("&amp;");
            buffer.append(VALUE);
            buffer.append("=");
            buffer.append(ClickUtils.encodeUrl(value, context));
        }


        if (hasParameters()) {
            Iterator i = getParameters().keySet().iterator();
            while (i.hasNext()) {
                String paramName = i.next().toString();
                if (!paramName.equals(ACTION_LINK) && !paramName.equals(VALUE)) {
                    Object paramValue = getParameters().get(paramName);


                    // Check for multivalued parameter
                    if (paramValue instanceof String[]) {
                        String[] paramValues = (String[]) paramValue;
                        for (int j = 0; j < paramValues.length; j++) {
                            buffer.append("&amp;");
                            buffer.append(paramName);
                            buffer.append("=");
                            buffer.append(ClickUtils.encodeUrl(paramValues[j],
                                context));
                        }
                    } else {
                        if (paramValue != null) {
                            buffer.append("&amp;");
                            buffer.append(paramName);
                            buffer.append("=");
                            buffer.append(ClickUtils.encodeUrl(paramValue,
                                                               context));
                        }
                    }
                }
            }
        }


        return context.getResponse().encodeURL(buffer.toString());
    }

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


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


        if (clicked) {
            bindRequestParameters(context);
        }
    }

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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()) {
            Iterator i = getParameters().keySet().iterator();
            while (i.hasNext()) {
                String name = i.next().toString();
                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.
     */
    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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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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