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/*
* Copyright 2000-2014 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 java.util.Collection;
import org.jsoup.nodes.Element;
import com.vaadin.server.Resource;
import com.vaadin.shared.ui.AbstractEmbeddedState;
import com.vaadin.ui.declarative.DesignAttributeHandler;
import com.vaadin.ui.declarative.DesignContext;
/**
* Abstract base for embedding components.
*
* @author Vaadin Ltd.
* @version
* @VERSION@
* @since 7.0
*/
@SuppressWarnings("serial")
public abstract class AbstractEmbedded extends AbstractComponent {
@Override
protected AbstractEmbeddedState getState() {
return (AbstractEmbeddedState) super.getState();
}
@Override
protected AbstractEmbeddedState getState(boolean markAsDirty) {
return (AbstractEmbeddedState) super.getState(markAsDirty);
}
/**
* Sets the object source resource. The dimensions are assumed if possible.
* The type is guessed from resource.
*
* @param source
* the source to set.
*/
public void setSource(Resource source) {
setResource(AbstractEmbeddedState.SOURCE_RESOURCE, source);
}
/**
* Get the object source resource.
*
* @return the source
*/
public Resource getSource() {
return getResource(AbstractEmbeddedState.SOURCE_RESOURCE);
}
/**
* Sets this component's alternate text that can be presented instead of the
* component's normal content for accessibility purposes.
*
* @param altText
* A short, human-readable description of this component's
* content.
*/
public void setAlternateText(String altText) {
getState().alternateText = altText;
}
/**
* Gets this component's alternate text that can be presented instead of the
* component's normal content for accessibility purposes.
*
* @returns Alternate text
*/
public String getAlternateText() {
return getState(false).alternateText;
}
@Override
public void readDesign(Element design, DesignContext designContext) {
super.readDesign(design, designContext);
if (design.hasAttr("alt")) {
setAlternateText(DesignAttributeHandler.readAttribute("alt",
design.attributes(), String.class));
}
}
@Override
public void writeDesign(Element design, DesignContext designContext) {
super.writeDesign(design, designContext);
AbstractEmbedded def = designContext.getDefaultInstance(this);
DesignAttributeHandler.writeAttribute("alt", design.attributes(),
getAlternateText(), def.getAlternateText(), String.class);
}
@Override
protected Collection<String> getCustomAttributes() {
Collection<String> c = super.getCustomAttributes();
c.add("alternate-text");
c.add("alt");
return c;
}
}
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