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/*
* Copyright 2000-2016 Vaadin Ltd.
*
* 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 com.vaadin.ui;
import com.vaadin.event.MouseEvents.ClickEvent;
import com.vaadin.event.MouseEvents.ClickListener;
import com.vaadin.server.Resource;
import com.vaadin.shared.EventId;
import com.vaadin.shared.MouseEventDetails;
import com.vaadin.shared.Registration;
import com.vaadin.shared.ui.image.ImageServerRpc;
import com.vaadin.shared.ui.image.ImageState;
/**
* Component for embedding images.
*
* @author Vaadin Ltd.
* @version @VERSION@
* @since 7.0
*/
@SuppressWarnings("serial")
public class Image extends AbstractEmbedded {
protected ImageServerRpc rpc = new ImageServerRpc() {
@Override
public void click(MouseEventDetails mouseDetails) {
fireEvent(new ClickEvent(Image.this, mouseDetails));
}
};
/**
* Creates a new empty Image.
*/
public Image() {
registerRpc(rpc);
}
/**
* Creates a new empty Image with caption.
*
* @param caption
*/
public Image(String caption) {
this();
setCaption(caption);
}
/**
* Creates a new Image whose contents is loaded from given resource. The
* dimensions are assumed if possible. The type is guessed from resource.
*
* @param caption
* @param source
* the Source of the embedded object.
*/
public Image(String caption, Resource source) {
this(caption);
setSource(source);
}
@Override
protected ImageState getState() {
return (ImageState) super.getState();
}
/**
* Add a click listener to the component. The listener is called whenever
* the user clicks inside the component. Depending on the content the event
* may be blocked and in that case no event is fired.
*
* @see Registration
*
* @param listener
* The listener to add, not null
* @return a registration object for removing the listener
*/
public Registration addClickListener(ClickListener listener) {
addListener(EventId.CLICK_EVENT_IDENTIFIER, ClickEvent.class, listener,
ClickListener.clickMethod);
return () -> removeListener(EventId.CLICK_EVENT_IDENTIFIER,
ClickEvent.class, listener);
}
/**
* Remove a click listener from the component. The listener should earlier
* have been added using {@link #addClickListener(ClickListener)}.
*
* @param listener
* The listener to remove
*
* @deprecated As of 8.0, replaced by {@link Registration#remove()} in the
* registration object returned from
* {@link #addClickListener(ClickListener)}.
*/
@Deprecated
public void removeClickListener(ClickListener listener) {
removeListener(EventId.CLICK_EVENT_IDENTIFIER, ClickEvent.class,
listener);
}
}
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