Java tutorial
/* * Copyright (c) 2011 Lockheed Martin Corporation * * 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.eurekastreams.web.client.ui.pages.widget; import java.util.HashSet; import org.eurekastreams.server.action.request.stream.PostActivityRequest; import org.eurekastreams.server.domain.DomainConversionUtility; import org.eurekastreams.server.domain.EntityType; import org.eurekastreams.server.domain.stream.ActivityDTO; import org.eurekastreams.server.domain.stream.LinkInformation; import org.eurekastreams.server.domain.stream.StreamScope; import org.eurekastreams.server.domain.stream.StreamScope.ScopeType; import org.eurekastreams.server.search.modelview.PersonModelView; import org.eurekastreams.web.client.events.EventBus; import org.eurekastreams.web.client.events.MessageStreamAppendEvent; import org.eurekastreams.web.client.events.Observer; import org.eurekastreams.web.client.events.PostReadyEvent; import org.eurekastreams.web.client.events.data.GotSystemSettingsResponseEvent; import org.eurekastreams.web.client.events.errors.ErrorPostingMessageToNullScopeEvent; import org.eurekastreams.web.client.model.ActivityModel; import org.eurekastreams.web.client.model.SystemSettingsModel; import org.eurekastreams.web.client.ui.Session; import org.eurekastreams.web.client.ui.common.avatar.AvatarWidget; import org.eurekastreams.web.client.ui.common.avatar.AvatarWidget.Size; import org.eurekastreams.web.client.ui.common.stream.PostToPanel; import org.eurekastreams.web.client.ui.common.stream.PostToStreamTextboxPanel; import org.eurekastreams.web.client.ui.common.stream.decorators.ActivityDTOPopulator; import org.eurekastreams.web.client.ui.common.stream.decorators.object.BookmarkPopulator; import org.eurekastreams.web.client.ui.common.stream.decorators.verb.PostPopulator; import org.eurekastreams.web.client.ui.common.stream.thumbnail.ThumbnailSelectorComposite; import org.eurekastreams.web.client.ui.pages.master.StaticResourceBundle; import com.google.gwt.event.dom.client.BlurEvent; import com.google.gwt.event.dom.client.BlurHandler; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.event.dom.client.FocusEvent; import com.google.gwt.event.dom.client.FocusHandler; import com.google.gwt.event.dom.client.KeyUpEvent; import com.google.gwt.event.dom.client.KeyUpHandler; import com.google.gwt.event.logical.shared.ValueChangeEvent; import com.google.gwt.event.logical.shared.ValueChangeHandler; import com.google.gwt.user.client.ui.Composite; import com.google.gwt.user.client.ui.FlowPanel; import com.google.gwt.user.client.ui.InlineLabel; import com.google.gwt.user.client.ui.Label; import com.google.gwt.user.client.ui.Panel; import com.google.gwt.user.client.ui.SimplePanel; import com.google.gwt.user.client.ui.TextBox; /** * The Eureka Connect share dialog widget. */ public class ShareWidget extends Composite { /** Max length. */ private static final int MAXLENGTH = 250; /** The display link panel. */ private final FlowPanel displayPanel = new FlowPanel(); /** Thumbnail selector. */ private final ThumbnailSelectorComposite selector = new ThumbnailSelectorComposite(); /** Link URL. */ private final Label linkUrlDisplay = new Label(); /** The title link. */ private final FlowPanel titleLink = new FlowPanel(); /** Link Description. */ private final Label linkDesc = new Label(); /** Text box. */ private final TextBox title = new TextBox(); /** Max length of title. */ private static final int MAX_LENGTH = 50; /** Activity Populator. */ private final ActivityDTOPopulator activityPopulator = new ActivityDTOPopulator(); /** * Default text for postbox. */ private final String defaultText = "Add comment to Post"; /** The count down label. */ private final Label countDown = new Label(); /** If share button is inactive. */ private boolean inactive = false; /** The post button. */ private final Label postButton = new Label("Post"); /** The message entry box. */ private final PostToStreamTextboxPanel message = new PostToStreamTextboxPanel(); /** * Constructor. * * @param resourceUrl * resource url. * @param inTitle * the title. * @param desc * the description. * @param thumbs * the thumbnails. */ public ShareWidget(final String resourceUrl, final String inTitle, final String desc, final String[] thumbs) { final FlowPanel widget = new FlowPanel(); widget.addStyleName(StaticResourceBundle.INSTANCE.coreCss().eurekaConnectShareWidgetContainer()); initWidget(widget); PersonModelView person = Session.getInstance().getCurrentPerson(); StreamScope defaultStreamScope = new StreamScope(person.getDisplayName(), ScopeType.PERSON, person.getAccountId(), person.getStreamId()); final PostToPanel postToPanel = new PostToPanel(defaultStreamScope); widget.add(postToPanel); // -- Setup the link display panel (thumbnail selector, field to update title) -- title.addStyleName(StaticResourceBundle.INSTANCE.coreCss().attachLinkTitleEntry()); linkUrlDisplay.addStyleName(StaticResourceBundle.INSTANCE.coreCss().url()); linkDesc.addStyleName(StaticResourceBundle.INSTANCE.coreCss().metaDescription()); FlowPanel linkInfoPanel = new FlowPanel(); linkInfoPanel.addStyleName(StaticResourceBundle.INSTANCE.coreCss().messageLink()); linkInfoPanel.add(title); linkInfoPanel.add(linkUrlDisplay); linkInfoPanel.add(linkDesc); displayPanel.addStyleName(StaticResourceBundle.INSTANCE.coreCss().linkPanel()); displayPanel.add(selector); displayPanel.add(linkInfoPanel); displayPanel.add(selector.getPagingControls()); widget.add(displayPanel); final LinkInformation link = new LinkInformation(); link.setDescription(desc); link.setTitle(inTitle); link.setUrl(resourceUrl); try { link.setSource(resourceUrl.substring(0, resourceUrl.indexOf('/', 7))); } catch (Exception e) { link.setSource(resourceUrl); } if (thumbs != null) { HashSet<String> thumbsSet = new HashSet<String>(); for (String thumb : thumbs) { thumbsSet.add(thumb); } link.setImageUrls(thumbsSet); link.setLargestImageUrl(thumbs[0]); } onLinkAdded(link); final FlowPanel postContainer = new FlowPanel(); postContainer.getElement().setAttribute("id", "post-to-stream"); postContainer.addStyleName(StaticResourceBundle.INSTANCE.coreCss().postToStream()); postContainer.addStyleName(StaticResourceBundle.INSTANCE.coreCss().small()); postContainer.addStyleName(StaticResourceBundle.INSTANCE.coreCss().postToStreamContainer()); FlowPanel postInfoContainer = new FlowPanel(); postInfoContainer.addStyleName(StaticResourceBundle.INSTANCE.coreCss().postInfoContainer()); postButton.addStyleName(StaticResourceBundle.INSTANCE.coreCss().postButton()); postInfoContainer.add(postButton); countDown.setText(Integer.toString(MAXLENGTH)); countDown.addStyleName(StaticResourceBundle.INSTANCE.coreCss().charactersRemaining()); postInfoContainer.add(countDown); message.setText(defaultText); // user clicked in message text box message.addFocusHandler(new FocusHandler() { public void onFocus(final FocusEvent inEvent) { if ((" " + postContainer.getStyleName() + " ") .contains(StaticResourceBundle.INSTANCE.coreCss().small())) { postContainer.removeStyleName(StaticResourceBundle.INSTANCE.coreCss().small()); message.setText(""); } } }); // changes to the message for character countdown message.addKeystrokeHandler(new KeyUpHandler() { public void onKeyUp(final KeyUpEvent inEvent) { onCommentChanges(); } }); message.addValueChangedHandler(new ValueChangeHandler<String>() { public void onValueChange(final ValueChangeEvent<String> inEvent) { onCommentChanges(); } }); AvatarWidget avatar = new AvatarWidget(person, EntityType.PERSON, Size.VerySmall); avatar.addStyleName(StaticResourceBundle.INSTANCE.coreCss().postEntryAvatar()); Panel entryPanel = new FlowPanel(); entryPanel.addStyleName(StaticResourceBundle.INSTANCE.coreCss().postEntryPanel()); entryPanel.add(avatar); entryPanel.add(postInfoContainer); entryPanel.add(message); postContainer.add(entryPanel); FlowPanel contentWarningContainer = new FlowPanel(); contentWarningContainer.addStyleName(StaticResourceBundle.INSTANCE.coreCss().contentWarning()); contentWarningContainer.add(new SimplePanel()); final InlineLabel contentWarning = new InlineLabel(); contentWarningContainer.add(contentWarning); postContainer.add(contentWarningContainer); Session.getInstance().getEventBus().addObserver(GotSystemSettingsResponseEvent.class, new Observer<GotSystemSettingsResponseEvent>() { public void update(final GotSystemSettingsResponseEvent event) { contentWarning.setText(event.getResponse().getContentWarningText()); } }); SystemSettingsModel.getInstance().fetch(null, true); widget.add(postContainer); EventBus.getInstance().addObserver(MessageStreamAppendEvent.class, new Observer<MessageStreamAppendEvent>() { public void update(final MessageStreamAppendEvent arg1) { closeWindow(); } }); postButton.addClickHandler(new ClickHandler() { public void onClick(final ClickEvent event) { StreamScope scope = postToPanel.getPostScope(); if (scope == null) { ErrorPostingMessageToNullScopeEvent error = new ErrorPostingMessageToNullScopeEvent(); error.setErrorMsg("The stream name you entered could not be found"); Session.getInstance().getEventBus().notifyObservers(error); return; } EntityType recipientType = DomainConversionUtility.convertToEntityType(scope.getScopeType()); if (EntityType.NOTSET.equals(recipientType)) { recipientType = EntityType.GROUP; } String messageText = message.getText(); if (messageText.equals(defaultText)) { messageText = ""; } BookmarkPopulator objectStrat = new BookmarkPopulator(); objectStrat.setLinkInformation(link); ActivityDTO activity = activityPopulator.getActivityDTO(messageText, recipientType, scope.getUniqueKey(), new PostPopulator(), objectStrat); PostActivityRequest postRequest = new PostActivityRequest(activity); ActivityModel.getInstance().insert(postRequest); } }); EventBus.getInstance().notifyObservers(new PostReadyEvent("Something")); } /** * Called when a link is added to the message. * * @param link * the link that was added. */ public void onLinkAdded(final LinkInformation link) { LinkInformation addedLink = link; if (null == addedLink) { addedLink = new LinkInformation(); } selector.setLink(addedLink); if (!addedLink.getImageUrls().isEmpty()) { displayPanel.addStyleName(StaticResourceBundle.INSTANCE.coreCss().hasThumbnail()); } linkUrlDisplay.setText("source: " + addedLink.getSource()); title.setVisibleLength(MAX_LENGTH); title.setValue(addedLink.getTitle()); title.addBlurHandler(new BlurHandler() { public void onBlur(final BlurEvent event) { // This check is a workaround for the real problem, which is that the blur handler is getting wired up // multiple times (once on the first time the user clicks 'add link' and once when the activity is // posted and everything is being cleared out). Maybe this control will get redesigned when // PostToStreamComposite gets refactored from MVC to the current design. if (link != null) { link.setTitle(title.getValue()); } } }); linkDesc.setText(addedLink.getDescription()); } /** * Gets triggered whenever the comment changes. */ private void onCommentChanges() { Integer charsRemaining = MAXLENGTH - message.getText().length(); countDown.setText(charsRemaining.toString()); if (charsRemaining >= 0) { countDown.removeStyleName(StaticResourceBundle.INSTANCE.coreCss().overCharacterLimit()); postButton.removeStyleName(StaticResourceBundle.INSTANCE.coreCss().inactive()); inactive = false; } else { countDown.addStyleName(StaticResourceBundle.INSTANCE.coreCss().overCharacterLimit()); postButton.addStyleName(StaticResourceBundle.INSTANCE.coreCss().inactive()); inactive = true; } } /** * Close the window. */ public static native void closeWindow() /*-{ try { $wnd.opener.location.href = $wnd.opener.location.href; } catch(e) {} $wnd.close(); }-*/; }