/*
* PreWidget.java
*
* Copyright (C) 2009-12 by RStudio, Inc.
*
* Unless you have received this program directly from RStudio pursuant
* to the terms of a commercial license agreement with RStudio, then
* this program is licensed to you under the terms of version 3 of the
* GNU Affero General Public License. This program is distributed WITHOUT
* ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT,
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the
* AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details.
*
*/
package org.rstudio.core.client.widget;
import java.util.ArrayList;
import org.rstudio.studio.client.workbench.views.source.editors.text.events.PasteEvent;
import com.google.gwt.dom.client.Document;
import com.google.gwt.event.dom.client.*;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.Event;
import com.google.gwt.user.client.ui.Widget;
public class PreWidget extends Widget implements HasKeyDownHandlers,
HasClickHandlers
{
public PreWidget()
{
setElement(Document.get().createPreElement());
getElement().setTabIndex(0);
}
public HandlerRegistration addClickHandler(ClickHandler handler)
{
return addDomHandler(handler, ClickEvent.getType());
}
public HandlerRegistration addKeyDownHandler(KeyDownHandler handler)
{
return addDomHandler(handler, KeyDownEvent.getType());
}
public HandlerRegistration addPasteHandler(final PasteEvent.Handler handler)
{
// GWT doesn't understand paste events via BrowserEvents.Paste, so we need
// to manually sink and register for the paste event.
sinkEvents(Event.ONPASTE);
pasteHandlers_.add(handler);
return new HandlerRegistration()
{
@Override
public void removeHandler()
{
pasteHandlers_.remove(handler);
}
};
}
public void setText(String text)
{
getElement().setInnerText(text);
}
public void appendText(String text)
{
getElement().setInnerText(getElement().getInnerText() + text);
}
@Override
public void onBrowserEvent(Event event)
{
super.onBrowserEvent(event);
if (event.getTypeInt() == Event.ONPASTE)
{
for (PasteEvent.Handler handler: pasteHandlers_)
{
handler.onPaste(new PasteEvent(getClipboardText(event)));
}
}
}
private final native String getClipboardText(Event event) /*-{
return event.clipboardData.getData('text/plain');
}-*/;
private ArrayList<PasteEvent.Handler> pasteHandlers_ =
new ArrayList<PasteEvent.Handler>();
}