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234 lines
7.0 KiB
Java
234 lines
7.0 KiB
Java
/**
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*
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*/
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package org.gcube.portlets.user.newsfeed.client.ui;
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import java.util.HashSet;
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import org.gcube.portlets.user.gcubewidgets.client.elements.Div;
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import org.gcube.portlets.user.newsfeed.client.NewsService;
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import org.gcube.portlets.user.newsfeed.client.NewsServiceAsync;
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import org.gcube.portlets.user.newsfeed.shared.MentionedDTO;
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import org.gcube.portlets.widgets.pickitem.client.dialog.PickItemsDialog;
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import org.gcube.portlets.widgets.pickitem.client.events.PickedItemEvent;
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import org.gcube.portlets.widgets.pickitem.client.events.PickedItemEventHandler;
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import org.gcube.portlets.widgets.pickitem.shared.ItemBean;
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import com.google.gwt.core.client.GWT;
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import com.google.gwt.dom.client.Element;
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import com.google.gwt.dom.client.NodeList;
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import com.google.gwt.event.dom.client.FocusEvent;
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import com.google.gwt.event.dom.client.FocusHandler;
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import com.google.gwt.event.dom.client.KeyCodes;
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import com.google.gwt.event.dom.client.KeyPressEvent;
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import com.google.gwt.event.dom.client.KeyPressHandler;
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import com.google.gwt.event.shared.HandlerManager;
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import com.google.gwt.user.client.DOM;
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import com.google.gwt.user.client.Event;
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import com.google.gwt.user.client.Random;
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import com.google.gwt.user.client.Timer;
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import com.google.gwt.user.client.ui.TextArea;
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/**
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* @author massi
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*
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*/
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public class SuperPosedTextArea extends TextArea {
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private final NewsServiceAsync newsService = GWT.create(NewsService.class);
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private final HandlerManager eventBus = new HandlerManager(null);
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private PickItemsDialog pickUserDlg = null;
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private Div highlighterDIV;
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public final static int ARROW_UP = 38;
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public final static int ARROW_DOWN = 40;
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private String context;
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private HashSet<MentionedDTO> mentionedUsers = new HashSet<MentionedDTO>();
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private String areaId;
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/**
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*
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*/
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public SuperPosedTextArea(Div highlighterDIV) {
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sinkEvents(Event.ONPASTE);
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sinkEvents(Event.ONCONTEXTMENU);
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sinkEvents(Event.ONKEYDOWN);
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sinkEvents(Event.ONKEYUP);
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setText(AddCommentTemplate.COMMENT_TEXT);
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this.highlighterDIV = highlighterDIV;
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//needed to give unique identifiers to the Area (for the jQuery plugin)
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areaId = "postTextArea"+Random.nextInt();
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getElement().setAttribute("id", areaId);
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bind();
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Timer t = new Timer() {
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@Override
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public void run() {
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myAutoSize(areaId);
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}
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};
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t.schedule(200);
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this.addKeyPressHandler(new KeyPressHandler() {
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@Override
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public void onKeyPress(KeyPressEvent event) {
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if (pickUserDlg != null) {
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int top = getAbsoluteTop();
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int offset = getOffsetHeight();
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int y = getAbsoluteTop()+getOffsetHeight();
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GWT.log("top=" + top + " - offset = " +offset);
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pickUserDlg.onKeyPress(getCursorPos(), event.getUnicodeCharCode(), getAbsoluteLeft(), y, getText());
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}
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}
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});
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this.addFocusHandler(new FocusHandler() {
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@Override
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public void onFocus(FocusEvent event) {
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pickUserDlg = new PickItemsDialog('@', eventBus, 430, context);
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pickUserDlg.withPhoto();
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}
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});
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}
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/**
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* This is the way to wrap jQuery plugins into GWT, wrap it in a function and call it.
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*/
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public static native void myAutoSize(String myAreaId) /*-{
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function autoSizeArea() {
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$wnd.jQuery('#'+myAreaId).autosize();
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}
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autoSizeArea();
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}-*/;
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/**
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* @param element
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*/
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public SuperPosedTextArea(Element element) {
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super(element);
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}
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/**
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*
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* @param context e.g. /gcube/devNext/NextNext
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*/
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public void setContext(String context) {
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this.context = context;
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}
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/**
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* paste event overridden
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*/
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public void onBrowserEvent(Event event) {
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super.onBrowserEvent(event);
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switch (event.getTypeInt()) {
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case Event.ONPASTE: {
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if (getText().equals(AddCommentTemplate.COMMENT_TEXT) || getText().equals(AddCommentTemplate.ERROR_UPDATE_TEXT) ) {
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setText("");
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addStyleName("dark-color");
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removeStyleName("nwfeed-error");
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}
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break;
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}
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case Event.ONKEYUP: {
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injectInDiv(getText());
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pickUserDlg.onKeyUp(event.getKeyCode());
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break;
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}
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case Event.ONCONTEXTMENU: {
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removeSampleText();
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break;
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}
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case Event.ONKEYDOWN: {
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if (pickUserDlg.isShowing()) {
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//avoid the arrow up to move the cursor at the beginning of the textbox and the TAB to move around inputs and enter to go newline
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if (event.getKeyCode() == ARROW_UP || event.getKeyCode() == KeyCodes.KEY_TAB || event.getKeyCode() == KeyCodes.KEY_ENTER) {
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DOM.eventCancelBubble(event, true);
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event.preventDefault();
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return;
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}
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}
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break;
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}
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}
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}
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protected void removeSampleText() {
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if (getText().equals(AddCommentTemplate.COMMENT_TEXT) || getText().equals(AddCommentTemplate.ERROR_UPDATE_TEXT) ) {
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setText("");
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addStyleName("darker-color");
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removeStyleName("nwfeed-error");
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}
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}
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protected void cleanHighlighterDiv() {
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//DOM.getElementById("comment-highlighter").setInnerHTML("");
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highlighterDIV.getElement().setInnerHTML("");
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}
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/**
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* copy what is being written in the text area in the underneath DIV
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* @param textAreaText
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*/
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private void injectInDiv(String textAreaText) {
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String text;
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// parse the text:
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// replace all the line braks by <br/>, and all the double spaces by the html version
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text = textAreaText.replaceAll("(\r\n|\n)","<br />");
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text = text.replaceAll("\\s\\s"," ");
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for (MentionedDTO mentionedUser : mentionedUsers) {
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text = text.replaceAll(mentionedUser.value,
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"<span id=\""+ mentionedUser.id +"\" title=\""+ mentionedUser.type +"\" class=\"highlightedUser\">"+mentionedUser.value+"</span>");
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}
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// re-inject the processed text into the div
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highlighterDIV.getElement().setInnerHTML(text);
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}
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/**
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* events binder
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*/
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private void bind() {
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eventBus.addHandler(PickedItemEvent.TYPE, new PickedItemEventHandler() {
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@Override
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public void onSelectedItem(PickedItemEvent event) {
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String toAdd = event.getSelectedItem().getAlternativeName();
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ItemBean ib = event.getSelectedItem();
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String type = ib.isItemGroup() ? "team" : "user";
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MentionedDTO mToAdd = new MentionedDTO(ib.getId(), ib.getAlternativeName(), type);
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mentionedUsers.add(mToAdd);
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String preceedingPart = getText().substring(0, event.getItemCursorIndexStart());
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String afterPart = getText().substring(event.getItemCursorIndexEnd()+1);
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setText(preceedingPart + toAdd + " " + afterPart);
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injectInDiv(getText());
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}
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});
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}
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public HashSet<MentionedDTO> getMentionedUsers() {
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NodeList<Element> elems = highlighterDIV.getElement().getElementsByTagName("span");
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HashSet<MentionedDTO> toReturn = new HashSet<MentionedDTO>();
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if (elems != null && elems.getLength() > 0) {
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int elemsNo = elems.getLength();
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for (int i = 0; i < elemsNo; i++) {
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Element el = elems.getItem(i);
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String id = el.getId();
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String type = el.getTitle();
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String value = el.getInnerText();
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MentionedDTO toAdd = new MentionedDTO(id, value, type);
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toReturn.add(toAdd);
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GWT.log(toAdd.toString());
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}
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}
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return toReturn;
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}
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/**
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* return the unique identifier of this textarea, useful for getElementById JS method
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* @return
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*/
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public String getAreaId() {
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return areaId;
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}
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}
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