/**
* JBoss, Home of Professional Open Source
* Copyright 2013, Red Hat, Inc. and/or its affiliates, and individual
* contributors by the @authors tag. See the copyright.txt in the
* distribution for a full listing of individual contributors.
*
* 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.jboss.errai.cdi.demo.tagcloud.client.local;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import javax.annotation.PostConstruct;
import javax.enterprise.event.Event;
import javax.enterprise.event.Observes;
import javax.inject.Inject;
import org.jboss.errai.cdi.demo.tagcloud.client.shared.Deleted;
import org.jboss.errai.cdi.demo.tagcloud.client.shared.New;
import org.jboss.errai.cdi.demo.tagcloud.client.shared.Tag;
import org.jboss.errai.cdi.demo.tagcloud.client.shared.TagCloud;
import org.jboss.errai.cdi.demo.tagcloud.client.shared.TagCloudSubscription;
import org.jboss.errai.cdi.demo.tagcloud.client.shared.Updated;
import org.jboss.errai.ioc.client.api.EntryPoint;
import com.google.gwt.user.client.ui.Anchor;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.RootPanel;
/**
* EntryPoint to the Errai CDI tag cloud demo.
*
* @author Christian Sadilek <csadilek@redhat.com>
*/
@EntryPoint
public class TagCloudDemoClient {
private static final int MIN_FONT_SIZE = 10;
private static final int MAX_FONT_SIZE = 35;
private static final long TAG_ADULT_AGE = 15000l;
private static final long TAG_SENIOR_AGE = 45000l;
private static final String TAG_ADULT_AGE_STYLE = "tag-adult";
private static final String TAG_SENIOR_AGE_STYLE = "tag-senior";
private static final String TAG_WINNER_STYLE = "tag-winner";
private static final String TAG_DEFAULT_STYLE = "tag";
private static final String TWITTER_BASE_SEARCH_URL = "http://twitter.com/search?q=%23";
private final FlowPanel tagCloudPanel = new FlowPanel();
private Map<String, Anchor> tags;
private TagCloud cloud;
@Inject
private Event<TagCloudSubscription> subscriptionEvent;
@PostConstruct
public void onBusReady() {
RootPanel.get().add(tagCloudPanel);
subscriptionEvent.fire(new TagCloudSubscription());
}
public void onTagCloudReceived(@Observes TagCloud tagCloud) {
if (tags == null) {
tags = new HashMap<String, Anchor>();
}
else {
tags.clear();
tagCloudPanel.clear();
}
cloud = tagCloud;
tagCloudPanel.setStylePrimaryName("cloud");
for (Tag tag : tagCloud.getAllTags()) {
addTag(tag);
}
}
public void onTagUpdated(@Observes @Updated Tag tag) {
if (tags != null) {
Anchor link = tags.get(tag.getName());
if (link == null)
return;
if (tag.getFrequency() > cloud.getTag(tag.getName()).getFrequency()) {
link.setStyleName(TAG_DEFAULT_STYLE);
}
else if (tag.getFrequency() < cloud.getTag(tag.getName()).getFrequency()) {
if (link.getStyleName().contains(TAG_ADULT_AGE_STYLE)) {
link.setStyleName(TAG_SENIOR_AGE_STYLE, true);
}
else {
link.setStyleName(TAG_ADULT_AGE_STYLE, true);
}
}
boolean needsRefresh = cloud.updateTag(tag);
bounceResize("#" + link.getElement().getId(), calculateFontSize(tag), MAX_FONT_SIZE + "px");
checkAndMarkAsWinner(tag);
if (needsRefresh)
refreshTagCloud();
ageTags();
}
}
public void onTagCreated(@Observes @New Tag tag) {
if (tags == null)
return;
boolean needsRefresh = cloud.addTag(tag);
addTag(tag);
fadeIn("#" + tag.getName());
if (needsRefresh)
refreshTagCloud();
}
public void onTagDeleted(@Observes @Deleted Tag tag) {
if (tags == null)
return;
fadeOut("#" + tag.getName());
tags.remove(tag.getName());
if (cloud.removeTag(tag))
refreshTagCloud();
}
private void refreshTagCloud() {
for (Tag tag : cloud.getAllTags()) {
Anchor link = tags.get(tag.getName());
if (link != null) {
checkAndMarkAsWinner(tag);
resize("#" + link.getElement().getId(), calculateFontSize(tag));
}
}
}
private void addTag(Tag tag) {
tag.setCreated(new Date());
Anchor link = new Anchor(tag.getName(), TWITTER_BASE_SEARCH_URL + tag.getName(), "_blank");
link.getElement().setId(tag.getName());
link.setStylePrimaryName(TAG_DEFAULT_STYLE);
link.getElement().getStyle().setProperty("fontSize", calculateFontSize(tag));
tags.put(tag.getName(), link);
checkAndMarkAsWinner(tag);
remove(tag.getName());
tagCloudPanel.add(link);
}
private String calculateFontSize(Tag tag) {
Integer size = (int) (MIN_FONT_SIZE + Math.round((MAX_FONT_SIZE - MIN_FONT_SIZE) * cloud.getTagWeight(tag)));
return size.toString() + "px";
}
private void ageTags() {
Date now = new Date();
for (Tag tag : cloud.getAllTags()) {
Anchor link = tags.get(tag.getName());
if (link == null || link.getStyleName().contains(TAG_WINNER_STYLE))
continue;
if (tag.getCreated().getTime() < now.getTime() - TAG_ADULT_AGE) {
link.setStyleName(TAG_ADULT_AGE_STYLE, true);
}
if (tag.getCreated().getTime() < now.getTime() - TAG_SENIOR_AGE) {
link.setStyleName(TAG_SENIOR_AGE_STYLE, true);
}
}
}
private void checkAndMarkAsWinner(Tag tag) {
if (tags == null)
return;
Anchor link = tags.get(tag.getName());
if (link != null) {
if (link.getStyleName().contains(TAG_WINNER_STYLE))
link.removeStyleName(TAG_WINNER_STYLE);
if (tag.getFrequency().equals(cloud.getMaxFrequency())) {
link.setStyleName(TAG_WINNER_STYLE, true);
}
}
}
private native void resize(String tag, String size) /*-{
$wnd.$(tag).animate({
fontSize : size
}, 200, function() {
});
}-*/;
private native void bounceResize(String tag, String size, String maxSize) /*-{
$wnd.$(tag).animate({
fontSize : maxSize
}, 300, function() {
$wnd.$(tag).animate({
fontSize : size
}, 500, function() {
})
});
}-*/;
private native void fadeIn(String tag) /*-{
$wnd.$(tag).hide().fadeIn(800, function() {
});
}-*/;
private native void fadeOut(String tag) /*-{
$wnd.$(tag).fadeOut(800, function() {
$wnd.$(tag).remove()
});
}-*/;
private native void remove(String tag) /*-{
$wnd.$(tag).remove();
}-*/;
}