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• AutoCompleteRenderer.java

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org.primefaces.component.autocomplete.AutoCompleteRenderer Maven / Gradle / Ivy

/*
 * Copyright 2009-2014 PrimeTek.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.primefaces.component.autocomplete;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.logging.Logger;

import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.faces.convert.Converter;
import javax.faces.convert.ConverterException;
import javax.faces.event.PhaseId;

import org.primefaces.component.column.Column;
import org.primefaces.context.RequestContext;
import org.primefaces.event.AutoCompleteEvent;
import org.primefaces.expression.SearchExpressionFacade;
import org.primefaces.renderkit.InputRenderer;
import org.primefaces.util.ArrayUtils;
import org.primefaces.util.ComponentUtils;
import org.primefaces.util.HTML;
import org.primefaces.util.WidgetBuilder;

public class AutoCompleteRenderer extends InputRenderer {

	private static final Logger LOG = Logger.getLogger(AutoCompleteRenderer.class.getName());
	
    @Override
    public void decode(FacesContext context, UIComponent component) {
        AutoComplete ac = (AutoComplete) component;
        String clientId = ac.getClientId(context);
        Map params = context.getExternalContext().getRequestParameterMap();

        if(ac.isDisabled() || ac.isReadonly()) {
            return;
        }
        
        if(ac.isMultiple()) {
            decodeMultiple(context, ac);
        }
        else {
            decodeSingle(context, ac);
        }
        
        decodeBehaviors(context, ac);
        
        //AutoComplete event
        String query = params.get(clientId + "_query");
        if(query != null) {
            AutoCompleteEvent autoCompleteEvent = new AutoCompleteEvent(ac, query);
            autoCompleteEvent.setPhaseId(PhaseId.APPLY_REQUEST_VALUES);
            ac.queueEvent(autoCompleteEvent);
        }
    }
    
    protected void decodeSingle(FacesContext context, AutoComplete ac) {
        Map params = context.getExternalContext().getRequestParameterMap();
        String clientId = ac.getClientId(context);
        String valueParam = (ac.getVar() != null) ? clientId + "_hinput" : clientId + "_input";
        String submittedValue = params.get(valueParam);

        if(submittedValue != null) {
            ac.setSubmittedValue(submittedValue);
        }
    }
    
    protected void decodeMultiple(FacesContext context, AutoComplete ac) {
        Map paramValues = context.getExternalContext().getRequestParameterValuesMap();
        Map params = context.getExternalContext().getRequestParameterMap();
        String clientId = ac.getClientId(context);
        String[] hinputValues = paramValues.get(clientId + "_hinput");
        String[] submittedValues = (hinputValues != null) ? hinputValues : new String[]{};
        String inputValue = params.get(clientId + "_input");
        
        if(inputValue != null && !inputValue.trim().equals("")) {
            submittedValues = ArrayUtils.concat(submittedValues, new String[]{inputValue});
        }

        if(submittedValues.length > 0) {
            ac.setSubmittedValue(submittedValues);
        }
        else {
            ac.setSubmittedValue("");
        }
    }

    @Override
    public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
        AutoComplete autoComplete = (AutoComplete) component;
        Map params = context.getExternalContext().getRequestParameterMap();
        String query = params.get(autoComplete.getClientId(context) + "_query");

        if(query != null) {
            encodeResults(context, component, query);
        }
        else {
            encodeMarkup(context, autoComplete);
            encodeScript(context, autoComplete);
        }
    }

    @SuppressWarnings("unchecked")
    public void encodeResults(FacesContext context, UIComponent component, String query) throws IOException {
        AutoComplete ac = (AutoComplete) component;
        List results = ac.getSuggestions();
        int maxResults = ac.getMaxResults();
        
        if(maxResults != Integer.MAX_VALUE && results != null && results.size() > maxResults) {
            results = results.subList(0, ac.getMaxResults());
        }

        encodeSuggestions(context, ac, results);
    }

    protected void encodeMarkup(FacesContext context, AutoComplete ac) throws IOException {
        if(ac.isMultiple())
            encodeMultipleMarkup(context, ac);
        else
            encodeSingleMarkup(context, ac);
    }
    
    protected void encodeSingleMarkup(FacesContext context, AutoComplete ac) throws IOException {
        ResponseWriter writer = context.getResponseWriter();
        String clientId = ac.getClientId(context);
        String styleClass = ac.getStyleClass();
        styleClass = styleClass == null ? AutoComplete.STYLE_CLASS : AutoComplete.STYLE_CLASS + " " + styleClass;
        
        writer.startElement("span", null);
        writer.writeAttribute("id", clientId, null);
        writer.writeAttribute("class", styleClass, null);

        if(ac.getStyle() != null) {
            writer.writeAttribute("style", ac.getStyle(), null);
        }

        encodeInput(context, ac, clientId);
        
        if(ac.getVar() != null) {
            encodeHiddenInput(context, ac, clientId);
        }
        
        if(ac.isDropdown()) {
            encodeDropDown(context, ac);
        }
        
        encodePanel(context, ac);

        writer.endElement("span");
    }
    
    protected void encodeInput(FacesContext context, AutoComplete ac, String clientId) throws IOException {
        ResponseWriter writer = context.getResponseWriter();
        boolean disabled = ac.isDisabled();
        String var = ac.getVar();
        String itemLabel;
        String defaultStyleClass = ac.isDropdown() ? AutoComplete.INPUT_WITH_DROPDOWN_CLASS : AutoComplete.INPUT_CLASS;
        String styleClass = disabled ? defaultStyleClass + " ui-state-disabled" : defaultStyleClass;
        styleClass = ac.isValid() ? styleClass : styleClass + " ui-state-error";
        String inputStyle = ac.getInputStyle();
        String inputStyleClass = ac.getInputStyleClass();
        inputStyleClass = (inputStyleClass == null) ? styleClass : styleClass + " " + inputStyleClass; 
        String labelledBy = ac.getLabelledBy();
            
        writer.startElement("input", null);
        writer.writeAttribute("id", clientId + "_input", null);
        writer.writeAttribute("name", clientId + "_input", null);
        writer.writeAttribute("type", ac.getType(), null);
        writer.writeAttribute("class", inputStyleClass, null);
        writer.writeAttribute("autocomplete", "off", null);
        
        if(labelledBy != null) {
            writer.writeAttribute("aria-labelledby", labelledBy, null);
        }
        
        if(inputStyle != null) {
            writer.writeAttribute("style", inputStyle, null);
        }
        
        renderPassThruAttributes(context, ac, HTML.INPUT_TEXT_ATTRS_WITHOUT_EVENTS);
        renderDomEvents(context, ac, HTML.INPUT_TEXT_EVENTS);
        
        if(var == null) {
            itemLabel = ComponentUtils.getValueToRender(context, ac);
            
            if(itemLabel != null) {
                writer.writeAttribute("value", itemLabel , null);
            }
        }
        else {
            Map requestMap = context.getExternalContext().getRequestMap();
            
            if(ac.isValid()) {
                requestMap.put(var, ac.getValue());
                itemLabel = ac.getItemLabel();
            }
            else {
                Object submittedValue = ac.getSubmittedValue();
                
                Object value = ac.getValue();
                
                if(submittedValue == null && value != null) {
                    requestMap.put(var, value);
                    itemLabel = ac.getItemLabel();
                }
                else if(submittedValue != null) {
                    // retrieve the actual item (pojo) from the converter
                    try {
                        Object item = getConvertedValue(context, ac,
                                String.valueOf(submittedValue));
                        requestMap.put(var, item);
                        itemLabel = ac.getItemLabel();
                    }
                    catch (ConverterException ce) {
                        itemLabel = String.valueOf(submittedValue);
                    }

                }
                else {
                	itemLabel = null;
                }

            }

            if(itemLabel != null) {
                writer.writeAttribute("value", itemLabel, null);
            }
            
            requestMap.remove(var);
        }

        if(disabled) writer.writeAttribute("disabled", "disabled", null);
        if(ac.isReadonly()) writer.writeAttribute("readonly", "readonly", null);
        if(ac.isRequired()) writer.writeAttribute("aria-required", "true", null);
        
        if(RequestContext.getCurrentInstance().getApplicationContext().getConfig().isClientSideValidationEnabled()) {
            renderValidationMetadata(context, ac);
        }

        writer.endElement("input");
    }
    
    protected void encodeHiddenInput(FacesContext context, AutoComplete ac, String clientId) throws IOException {
        ResponseWriter writer = context.getResponseWriter();
        String valueToRender = ComponentUtils.getValueToRender(context, ac);
        
        writer.startElement("input", null);
        writer.writeAttribute("id", clientId + "_hinput", null);
        writer.writeAttribute("name", clientId + "_hinput", null);
        writer.writeAttribute("type", "hidden", null);
        writer.writeAttribute("autocomplete", "off", null);
        if(valueToRender != null) {
            writer.writeAttribute("value", valueToRender, null);
        } 
        writer.endElement("input");
    }
    
    protected void encodeHiddenSelect(FacesContext context, AutoComplete ac, String clientId, List values) throws IOException {
        ResponseWriter writer = context.getResponseWriter();
        String id = clientId + "_hinput";
        
        writer.startElement("select", null);
        writer.writeAttribute("id", id, null);
        writer.writeAttribute("name", id, null);
        writer.writeAttribute("multiple", "multiple", null);
        writer.writeAttribute("class", "ui-helper-hidden", null);
        
        if(ac.isDisabled()) {
            writer.writeAttribute("disabled", "disabled", "disabled");
        }
        
        for(String value : values) {
            writer.startElement("option", null);
            writer.writeAttribute("value", value, null);
            writer.writeAttribute("selected", "selected", null);
            writer.endElement("option");
        }
        
        writer.endElement("select");
    }
    
    protected void encodeDropDown(FacesContext context, AutoComplete ac) throws IOException {
        ResponseWriter writer = context.getResponseWriter();
        String dropdownClass = AutoComplete.DROPDOWN_CLASS;
        boolean disabled = ac.isDisabled()||ac.isReadonly();
        if(disabled) {
            dropdownClass += " ui-state-disabled";
        }
        
        writer.startElement("button", ac);
        writer.writeAttribute("class", dropdownClass, null);
        writer.writeAttribute("type", "button", null);
        if(disabled) {
            writer.writeAttribute("disabled", "disabled", null);
        }
        if(ac.getTabindex() != null) {
            writer.writeAttribute("tabindex", ac.getTabindex(), null);
        }

        writer.startElement("span", null);
        writer.writeAttribute("class", "ui-button-icon-primary ui-icon ui-icon-triangle-1-s", null);
        writer.endElement("span");
        
        writer.startElement("span", null);
        writer.writeAttribute("class", "ui-button-text", null);
        writer.write(" ");
        writer.endElement("span");
        
        
        writer.endElement("button");
    }
    
    protected void encodePanel(FacesContext context, AutoComplete ac) throws IOException {
        ResponseWriter writer = context.getResponseWriter();
        String styleClass = ac.getPanelStyleClass();
        styleClass = styleClass == null ? AutoComplete.PANEL_CLASS : AutoComplete.PANEL_CLASS + " " + styleClass;

        writer.startElement("div", null);
        writer.writeAttribute("id", ac.getClientId(context) + "_panel", null);
        writer.writeAttribute("class", styleClass, null);
        
        if(ac.getPanelStyle() != null) {
            writer.writeAttribute("style", ac.getPanelStyle(), null);
        }
        
        writer.endElement("div");
    }
    
    protected void encodeMultipleMarkup(FacesContext context, AutoComplete ac) throws IOException {
        ResponseWriter writer = context.getResponseWriter();
        String clientId = ac.getClientId(context);
        String inputId = clientId + "_input";
        
        List values;
        if(ac.isValid()) {
            values = (List) ac.getValue();
        }
        else {
            Object submittedValue = ac.getSubmittedValue();
            try {
                values = (List) getConvertedValue(context, ac, submittedValue);
            } catch (ConverterException ce) {
                values = Arrays.asList((String[]) submittedValue);
            }
        }
        
        List stringValues = new ArrayList();
        boolean disabled = ac.isDisabled();
        String title = ac.getTitle();
        
        String style = ac.getStyle();
        String styleClass = ac.getStyleClass();
        styleClass = styleClass == null ? AutoComplete.MULTIPLE_STYLE_CLASS : AutoComplete.MULTIPLE_STYLE_CLASS + " " + styleClass;
        String listClass = ac.isDropdown() ? AutoComplete.MULTIPLE_CONTAINER_WITH_DROPDOWN_CLASS : AutoComplete.MULTIPLE_CONTAINER_CLASS;
        listClass = disabled ? listClass + " ui-state-disabled" : listClass;
        listClass = ac.isValid() ? listClass : listClass + " ui-state-error";
        
        writer.startElement("div", null);
        writer.writeAttribute("id", clientId, null);
        writer.writeAttribute("class", styleClass, null);
        if(style != null) {
            writer.writeAttribute("style", style, null);
        }
        if(title != null) {
            writer.writeAttribute("title", title, null);
        }
        
        writer.startElement("ul", null);
        writer.writeAttribute("class", listClass, null);
        
        if(values != null && !values.isEmpty()) {
        	Converter converter = ComponentUtils.getConverter(context, ac);
        	String var = ac.getVar();
        	boolean pojo = var != null;

            for(Iterator