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261 lines
8.4 KiB
Java
261 lines
8.4 KiB
Java
package org.gcube.portlets.user.newsfeed.client.ui;
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import org.gcube.portal.databook.shared.Comment;
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import org.gcube.portal.databook.shared.UserInfo;
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import org.gcube.portlets.user.gcubewidgets.client.elements.Div;
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import org.gcube.portlets.user.newsfeed.client.event.AddCommentEvent;
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import org.gcube.portlets.user.newsfeed.client.event.EditCommentEvent;
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import com.github.gwtbootstrap.client.ui.Button;
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import com.google.gwt.core.client.GWT;
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import com.google.gwt.event.dom.client.ClickEvent;
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import com.google.gwt.event.dom.client.KeyPressEvent;
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import com.google.gwt.event.shared.HandlerManager;
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import com.google.gwt.event.shared.HandlerRegistration;
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import com.google.gwt.uibinder.client.UiBinder;
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import com.google.gwt.uibinder.client.UiFactory;
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import com.google.gwt.uibinder.client.UiField;
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import com.google.gwt.uibinder.client.UiHandler;
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import com.google.gwt.user.client.Timer;
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import com.google.gwt.user.client.Window;
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import com.google.gwt.user.client.Window.ClosingHandler;
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import com.google.gwt.user.client.ui.Composite;
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import com.google.gwt.user.client.ui.HTML;
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import com.google.gwt.user.client.ui.HTMLPanel;
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import com.google.gwt.user.client.ui.Image;
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import com.google.gwt.user.client.ui.Widget;
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public class AddCommentTemplate extends Composite {
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interface CommentTemplateUiBinder extends UiBinder<Widget, AddCommentTemplate> {
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}
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private static CommentTemplateUiBinder uiBinder = GWT.create(CommentTemplateUiBinder.class);
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public final static String COMMENT_TEXT = "Write a comment, use @ to mention someone";
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public final static String ERROR_UPDATE_TEXT = "Looks like empty to me!";
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public static final String avatar_default = GWT.getModuleBaseURL() + "../images/Avatar_default.png";
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private TweetTemplate owner;
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private HandlerManager eventBus;
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private boolean isEditing = false;
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private HTMLPanel commentPanel;
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private Comment toEdit;
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private ClosingHandler closingHandler;
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private HandlerRegistration handlerRegistration;
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@UiField HTMLPanel mainPanel;
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@UiField Image avatarImage;
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@UiField SuperPosedTextArea commentTextArea;
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@UiField Div highlighterDIV;
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@UiField Button submitButton;
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@UiField Button cancelButton; //obsolete
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/**
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* called on add comment
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* @param caller
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* @param myUserInfo
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* @param eventBus
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*/
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public AddCommentTemplate(TweetTemplate caller, UserInfo myUserInfo, HandlerManager eventBus) {
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initWidget(uiBinder.createAndBindUi(this));
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this.eventBus = eventBus;
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owner = caller;
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avatarImage.setPixelSize(30, 30);
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avatarImage.setUrl(myUserInfo.getAvatarId());
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submitButton.setVisible(false);
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cancelButton.setVisible(false);
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commentTextArea.setHeight("30px");
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commentTextArea.setContext(owner.getVREContext());
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}
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/**
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* called on edit comment
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* @param caller
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* @param editText
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*/
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public AddCommentTemplate(TweetTemplate caller, Comment toEdit, HTMLPanel commentPanel) {
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initWidget(uiBinder.createAndBindUi(this));
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this.eventBus = caller.getEventBus();
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this.commentPanel = commentPanel;
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isEditing = true;
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this.toEdit = toEdit;
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String commentText = new HTML(toEdit.getText()).getText();
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//replace the < & and >
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commentText = commentText.replaceAll("<","<").replaceAll(">",">");
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commentText = commentText.replaceAll("&","&");
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owner = caller;
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commentTextArea.setContext(owner.getVREContext());
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avatarImage.setPixelSize(30, 30);
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avatarImage.setUrl(caller.getMyUserInfo().getAvatarId());
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commentTextArea.setText(commentText);
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mainPanel.removeStyleName("comment-hidden");
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mainPanel.setStyleName("single-comment");
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commentTextArea.addStyleName("comment-dark-color");
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submitButton.setText("Edit");
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closingHandler = new Window.ClosingHandler() {
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public void onWindowClosing(Window.ClosingEvent closingEvent) {
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String currentText = commentTextArea.getText();
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if(!currentText.isEmpty()){
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closingEvent.setMessage("Do you really want to leave the page?");
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}
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}
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};
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handlerRegistration = Window.addWindowClosingHandler(closingHandler);
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}
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/** Used by AddCommentTemplate to instantiate SuperPosedTextArea */
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@UiFactory SuperPosedTextArea build() {
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return new SuperPosedTextArea(highlighterDIV);
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}
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public void setFocus() {
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commentTextArea.setFocus(true);
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submitButton.setVisible(true);
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cancelButton.setVisible(true);
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//it needs a timer otherwise it won't work
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Timer t = new Timer() {
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@Override
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public void run() {
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setCaretPositionToBegin(commentTextArea.getAreaId());
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closingHandler = new Window.ClosingHandler() {
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public void onWindowClosing(Window.ClosingEvent closingEvent) {
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String currentText = commentTextArea.getText();
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if(!currentText.isEmpty()){
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closingEvent.setMessage("Do you really want to leave the page?");
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}
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}
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};
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handlerRegistration = Window.addWindowClosingHandler(closingHandler);
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}
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};
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t.schedule(200);
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}
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@UiHandler("submitButton")
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void onSubmitClick(ClickEvent e) {
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String userComment = commentTextArea.getText().trim();
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if (userComment.equals(COMMENT_TEXT) || userComment.equals(ERROR_UPDATE_TEXT) || userComment.equals("")) {
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commentTextArea.addStyleName("nwfeed-error");
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commentTextArea.setText(ERROR_UPDATE_TEXT);
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return;
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}
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if (isEditing) {
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toEdit.setText(escapeHtml(commentTextArea.getText()));
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eventBus.fireEvent(new EditCommentEvent(owner, toEdit, commentPanel));
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}
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else { //it is ok to add this comment
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eventBus.fireEvent(new AddCommentEvent(owner, escapeHtml(commentTextArea.getText()), commentTextArea.getMentionedUsers()));
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}
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this.getWidget().setVisible(false);
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owner.setCommentingDisabled(false);
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handlerRegistration.removeHandler();
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GWT.log(" handlerRegistration.removeHandler();");
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}
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/**
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* called when pasting. it tries to avoid pasting long non spaced strings
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* @param linkToCheck
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*/
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private boolean checkTextLength(String textToCheck) {
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String [] parts = textToCheck.split("\\s");
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// check the length of tokens
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for( String item : parts ) {
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if (!item.startsWith("http") && !item.startsWith("ftp")) { //url are accepted as they can be trunked
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if (item.length() > 50) {
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return false;
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}
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}
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}
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return true;
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}
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@UiHandler("cancelButton")
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void onCancelClick(ClickEvent e) {
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this.getWidget().setVisible(false);
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owner.setCommentingDisabled(false);
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if (isEditing) {
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commentPanel.clear();
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SingleComment sc = new SingleComment(toEdit, owner, true);
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commentPanel.add(sc);
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}
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handlerRegistration.removeHandler();
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}
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@UiHandler("commentTextArea")
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void onCommentClick(ClickEvent e) {
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if (commentTextArea.getText().equals(COMMENT_TEXT) || commentTextArea.getText().equals(ERROR_UPDATE_TEXT) ) {
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commentTextArea.setText("");
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commentTextArea.addStyleName("comment-dark-color");
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commentTextArea.removeStyleName("nwfeed-error");
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}
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submitButton.setVisible(true);
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cancelButton.setVisible(true);
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closingHandler = new Window.ClosingHandler() {
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public void onWindowClosing(Window.ClosingEvent closingEvent) {
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String currentText = commentTextArea.getText();
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if(!currentText.isEmpty()){
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closingEvent.setMessage("Do you really want to leave the page?");
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}
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}
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};
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handlerRegistration = Window.addWindowClosingHandler(closingHandler);
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}
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@UiHandler("commentTextArea")
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void onCommentKeyPress(KeyPressEvent e) {
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if (commentTextArea.getText().equals(COMMENT_TEXT) || commentTextArea.getText().equals(ERROR_UPDATE_TEXT) ) {
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commentTextArea.setText("");
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commentTextArea.addStyleName("comment-dark-color");
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commentTextArea.removeStyleName("nwfeed-error");
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}
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}
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/**
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* Escape an html string. Escaping data received from the client helps to
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* prevent cross-site script vulnerabilities.
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*
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* @param html the html string to escape
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* @return the escaped string
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*/
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private String escapeHtml(String html) {
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if (html == null) {
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return null;
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}
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return html.replaceAll("&", "&").replaceAll("<", "<")
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.replaceAll(">", ">");
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}
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/**
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* this position the caret at the begin in a TextArea
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* @param myAreaId the unique identifier of the textarea
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*/
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public static native void setCaretPositionToBegin(String myAreaId) /*-{
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var elem = $doc.getElementById(myAreaId);
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if(elem != null) {
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if(elem.createTextRange) {
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var range = elem.createTextRange();
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range.move('character', 0);
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range.select();
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}
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else {
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if(elem.selectionStart) {
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elem.focus();
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elem.setSelectionRange(0, 0);
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}
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else
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elem.focus();
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}
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}
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}-*/;
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}
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