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/*
 * Copyright 2004-2014 ICEsoft Technologies Canada Corp.
 *
 * 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.icefaces.ace.component.growlmessages;

import org.icefaces.ace.util.ComponentUtils;
import org.icefaces.ace.util.JSONBuilder;
import org.icefaces.render.MandatoryResourceComponent;
import org.icefaces.impl.util.DOMUtils;

import javax.faces.application.FacesMessage;
import javax.faces.application.ProjectStage;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.faces.render.Renderer;
import java.io.IOException;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;

@MandatoryResourceComponent(tagName = "growlMessages", value = "org.icefaces.ace.component.growlmessages.GrowlMessages")
public class GrowlMessagesRenderer extends Renderer {

    private static final String[] icons = new String[]{"info", "notice", "alert", "alert"};
    private static final String[] states = new String[]{"highlight", "highlight", "error", "error"};
    private static final Set effectSet = new HashSet(Arrays.asList("blind", "bounce", "clip", "drop", "explode", "fade", "fold", "highlight", "puff", "pulsate", "scale", "shake", "size", "slide"));
    private static final Set durationSet = new HashSet(Arrays.asList("slow", "_default", "fast"));
    private static final Set positionSet = new HashSet(Arrays.asList("top-left", "top-right", "bottom-left", "bottom-right"));
    private static final Set glueSet = new HashSet(Arrays.asList("after", "before"));
    private static final Map severityMap = new HashMap() {
        {
            put("false", -1);
            put("info", 0);
            put("warn", 1);
            put("error", 2);
            put("fatal", 3);
            put("true", 4);
        }

        private static final long serialVersionUID = -8266894485504175957L;
    };
    private static final Logger logger = Logger.getLogger(GrowlMessagesRenderer.class.getName());

    public void encodeEnd(FacesContext context, UIComponent component) throws IOException {

        ResponseWriter writer = context.getResponseWriter();
        GrowlMessages messages = (GrowlMessages) component;
        String forId = (forId = messages.getFor()) == null ? "@all" : forId.trim();
        Iterator messageIter;
//        String style = messages.getStyle();
//        String styleClass = (styleClass = messages.getStyleClass()) == null ? "" : " " + styleClass;
        String sourceMethod = "encodeEnd";
        List idsInView = new ArrayList();
        if (forId.equals("@all")) {
            messageIter = messages.isGlobalOnly() ? context.getMessages(null) : context.getMessages();
        } else if (forId.equals("@inView")){
            idsInView = ComponentUtils.findIdsInView(context);
            messageIter = Collections.emptyList().iterator();
            if (idsInView.isEmpty()){
                logger.logp(Level.WARNING, logger.getName(), sourceMethod, " no components in view for use of @inView value");
                messageIter = Collections.emptyList().iterator();
            }else  {
                 messageIter = ComponentUtils.getMessagesInView(context, idsInView);
            }
        } else {
            UIComponent forComponent = forId.equals("") ? null : messages.findComponent(forId);
            if (forComponent == null) {
                logger.logp(Level.WARNING, logger.getName(), sourceMethod, "'for' attribute value cannot be empty or non-existent id.");
                messageIter = Collections.emptyList().iterator();
            } else {
                messageIter = context.getMessages(forComponent.getClientId(context));
            }
        }
        writer.startElement("span", messages);
        String clientId = messages.getClientId();
        writer.writeAttribute("id", messages.getClientId(), "id");
        ComponentUtils.enableOnElementUpdateNotify(writer, clientId);

        writer.startElement("script", null);
        writer.writeAttribute("type", "text/javascript", null);

        JSONBuilder jb = JSONBuilder.create();
        jb.beginFunction("ice.ace.create").item("GrowlMessages").beginArray().item(clientId).beginMap();

        int pool = messages.getMaxVisibleMessages();
        int life = messages.getDisplayDuration();
/*
        String showEffect = messages.getShowEffect();
        String hideEffect = messages.getHideEffect();
*/
        String position = messages.getPosition();
        String glue = messages.getMessageOrder();
        jb.entry("pool", pool > 0 ? pool : 0)
                .entry("header", messages.getHeader())
                .entry("group", messages.getMessageStyleClass())
                .entry("position", positionSet.contains(position) ? position : "top-right")
                .entry("glue", glueSet.contains(glue) ? glue : "after")
                .entry("life", life > 0 ? life : 3000)
                .entry("closer", messages.isCloseAll())
/*
                .entry("showEffect", effectSet.contains(showEffect) ? showEffect : "fade")
                .entry("hideEffect", effectSet.contains(hideEffect) ? hideEffect : "fade")
*/
        ;
        durationEntry(jb, "openDuration", messages.getShowEffectDuration());
        durationEntry(jb, "closeDuration", messages.getHideEffectDuration());

        jb.beginArray("msgs");
        writer.write(jb.toString());
        jb = JSONBuilder.create();
        while (messageIter.hasNext()) {
            FacesMessage facesMessage = (FacesMessage) messageIter.next();
            if (!facesMessage.isRendered() || messages.isRedisplay()) {
               // System.out.println(" growlmessage renderer message="+facesMessage.getDetail()) ;
                encodeMessage(writer, messages, facesMessage, jb);
            }
        }
        jb = JSONBuilder.create();
        jb.endArray().endMap().
            item(messages.isUseNativeNotifications()).
            endArray().endFunction();
        writer.write(jb + "//" + UUID.randomUUID());
        writer.endElement("script");
        writer.endElement("span");
    }

    private void encodeMessage(ResponseWriter writer, GrowlMessages messages, FacesMessage facesMessage, JSONBuilder jb) throws IOException {

        boolean showSummary = messages.isShowSummary();
        boolean showDetail = messages.isShowDetail();
        String summary = (null != (summary = facesMessage.getSummary())) ? summary : "";
        String detail = (null != (detail = facesMessage.getDetail())) ? detail : ""; // Mojarra defaults to summary. Not good.
        String text = ((showSummary ? summary : "") + " " + (showDetail ? detail : "")).trim();
        int ordinal = (ordinal = FacesMessage.VALUES.indexOf(facesMessage.getSeverity())) > -1 && ordinal < states.length ? ordinal : 0;
        Integer stickyOrdinal = (stickyOrdinal = severityMap.get(messages.getAutoHide())) == null ? 4 : stickyOrdinal;

        if (!text.equals("")) {
            if (!jb.toString().equals("")) {
                writer.write(",");
                jb = JSONBuilder.create();
            }
            jb.beginMap();
            writer.write(jb + "text:'");
            if (messages.isEscape()) {
                writer.write(DOMUtils.escapeAnsi(text));
            } else {
                writer.write(text);
            }
            writer.write("',");
            jb = JSONBuilder.create();
            jb.entry("icon", icons[ordinal]).entry("state", states[ordinal]).entry("sticky", (ordinal > stickyOrdinal)).endMap();
            writer.write(jb.toString());
        }
        facesMessage.rendered();
    }

    private void writeAttributes(ResponseWriter writer, UIComponent component, String... keys) throws IOException {
        Object value;
        for (String key : keys) {
            value = component.getAttributes().get(key);
            if (value != null) {
                writer.writeAttribute(key, value, key);
            }
        }
    }

    private void log(Level level, String sourceMethod, String message) {
        if (!FacesContext.getCurrentInstance().isProjectStage(ProjectStage.Development)) return;
        logger.logp(level, logger.getName(), sourceMethod, message);
    }

    private void logInvalid(Set validSet, String name, String value, String sourceMethod) {
        if (!value.equals("") && !validSet.contains(value)) {
            log(Level.WARNING, sourceMethod, "Invalid " + name + " \"" + value + "\" reset to default. Read TLD doc.");
        }
    }

    private static void durationEntry(JSONBuilder jb, String durationName, String duration) {
        try {
            jb.entry(durationName, Integer.parseInt(duration));
        } catch (NumberFormatException e) {
            duration = durationSet.contains(duration) ? duration : "_default";
            jb.entry(durationName, duration);
        }
    }

    public static String generateGrowlOptionsScript(GrowlMessages messages) {
        JSONBuilder jb = JSONBuilder.create();
        jb.beginMap();
        int pool = messages.getMaxVisibleMessages();
        int life = messages.getDisplayDuration();
        String position = messages.getPosition();
        String glue = messages.getMessageOrder();
        jb.entry("pool", pool > 0 ? pool : 0).
                entry("header", messages.getHeader()).
                entry("group", messages.getMessageStyleClass()).
                entry("position", positionSet.contains(position) ? position : "top-right").
                entry("glue", glueSet.contains(glue) ? glue : "after").
                entry("life", life > 0 ? life : 3000).
                entry("closer", messages.isCloseAll());
        durationEntry(jb, "openDuration", messages.getShowEffectDuration());
        durationEntry(jb, "closeDuration", messages.getHideEffectDuration());

        Integer stickyOrdinal = (stickyOrdinal = severityMap.get(messages.getAutoHide())) == null ? 4 : stickyOrdinal;
        jb.beginArray("msgs").beginMap().
                entry("text", "").
                entry("icon", "alert").
                entry("state", "error").
                entry("sticky", (3 > stickyOrdinal)).
                endMap().endArray().endMap();
        return jb.toString();
    }

}





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