/*
* 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.client.ui.embedded;
import java.util.Map;
import com.google.gwt.dom.client.Document;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.NativeEvent;
import com.google.gwt.dom.client.Node;
import com.google.gwt.dom.client.NodeList;
import com.google.gwt.dom.client.ObjectElement;
import com.google.gwt.dom.client.Style;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Event;
import com.vaadin.client.ApplicationConnection;
import com.vaadin.client.Paintable;
import com.vaadin.client.UIDL;
import com.vaadin.client.VConsole;
import com.vaadin.client.VTooltip;
import com.vaadin.client.communication.StateChangeEvent;
import com.vaadin.client.ui.AbstractComponentConnector;
import com.vaadin.client.ui.ClickEventHandler;
import com.vaadin.client.ui.VEmbedded;
import com.vaadin.shared.MouseEventDetails;
import com.vaadin.shared.ui.Connect;
import com.vaadin.shared.ui.embedded.EmbeddedConstants;
import com.vaadin.shared.ui.embedded.EmbeddedServerRpc;
import com.vaadin.shared.ui.embedded.EmbeddedState;
import com.vaadin.ui.Embedded;
@Connect(Embedded.class)
public class EmbeddedConnector extends AbstractComponentConnector
implements Paintable {
private Element resourceElement;
private ObjectElement objectElement;
private String resourceUrl;
@Override
public void onStateChanged(StateChangeEvent stateChangeEvent) {
super.onStateChanged(stateChangeEvent);
// if theme has changed the resourceUrl may need to be updated
updateResourceIfNecessary();
}
private void updateResourceIfNecessary() {
if (resourceElement != null || objectElement != null) {
String src = getResourceUrl("src");
if (src != null && !src.isEmpty()) {
if (!src.equals(resourceUrl)) {
setResourceUrl(src);
}
} else if (resourceUrl != null && !resourceUrl.isEmpty()) {
setResourceUrl("");
}
}
}
private void setResourceUrl(String src) {
resourceUrl = src;
if (resourceElement != null) {
resourceElement.setAttribute("src", src);
} else if (objectElement != null) {
objectElement.setData(src);
}
}
@Override
public void updateFromUIDL(UIDL uidl, ApplicationConnection client) {
if (!isRealUpdate(uidl)) {
return;
}
// Save details
getWidget().client = client;
boolean clearBrowserElement = true;
clickEventHandler.handleEventHandlerRegistration();
if (uidl.hasAttribute("type")) {
// remove old style name related to type
if (getWidget().type != null) {
getWidget().removeStyleName(
VEmbedded.CLASSNAME + "-" + getWidget().type);
}
// remove old style name related to mime type
if (getWidget().mimetype != null) {
getWidget().removeStyleName(
VEmbedded.CLASSNAME + "-" + getWidget().mimetype);
}
getWidget().type = uidl.getStringAttribute("type");
if (getWidget().type.equals("image")) {
getWidget().addStyleName(VEmbedded.CLASSNAME + "-image");
Element el = null;
boolean created = false;
NodeList<Node> nodes = getWidget().getElement().getChildNodes();
if (nodes != null && nodes.getLength() == 1) {
Node n = nodes.getItem(0);
if (n.getNodeType() == Node.ELEMENT_NODE) {
Element e = (Element) n;
if (e.getTagName().equals("IMG")) {
el = e;
}
}
}
if (el == null) {
getWidget().setHTML("");
el = DOM.createImg();
created = true;
DOM.sinkEvents(el, Event.ONLOAD);
}
// Set attributes
Style style = el.getStyle();
style.setProperty("width", getState().width);
style.setProperty("height", getState().height);
resourceElement = el;
objectElement = null;
setResourceUrl(getResourceUrl("src"));
if (uidl.hasAttribute(EmbeddedConstants.ALTERNATE_TEXT)) {
el.setPropertyString(EmbeddedConstants.ALTERNATE_TEXT,
uidl.getStringAttribute(
EmbeddedConstants.ALTERNATE_TEXT));
}
if (created) {
// insert in dom late
getWidget().getElement().appendChild(el);
}
/*
* Sink tooltip events so tooltip is displayed when hovering the
* image.
*/
getWidget().sinkEvents(VTooltip.TOOLTIP_EVENTS);
} else if (getWidget().type.equals("browser")) {
getWidget().addStyleName(VEmbedded.CLASSNAME + "-browser");
if (getWidget().browserElement == null) {
getWidget().setHTML(
"<iframe width=\"100%\" height=\"100%\" frameborder=\"0\""
+ " allowTransparency=\"true\" src=\"\""
+ " name=\"" + uidl.getId()
+ "\"></iframe>");
getWidget().browserElement = DOM
.getFirstChild(getWidget().getElement());
}
resourceElement = getWidget().browserElement;
objectElement = null;
setResourceUrl(getResourceUrl("src"));
clearBrowserElement = false;
} else {
VConsole.error(
"Unknown Embedded type '" + getWidget().type + "'");
}
} else if (uidl.hasAttribute("mimetype")) {
// remove old style name related to type
if (getWidget().type != null) {
getWidget().removeStyleName(
VEmbedded.CLASSNAME + "-" + getWidget().type);
}
// remove old style name related to mime type
if (getWidget().mimetype != null) {
getWidget().removeStyleName(
VEmbedded.CLASSNAME + "-" + getWidget().mimetype);
}
final String mime = uidl.getStringAttribute("mimetype");
if (mime.equals("application/x-shockwave-flash")) {
getWidget().mimetype = "flash";
// Handle embedding of Flash
getWidget().addStyleName(VEmbedded.CLASSNAME + "-flash");
getWidget().setHTML(getWidget().createFlashEmbed(uidl));
} else if (mime.equals("image/svg+xml")) {
getWidget().mimetype = "svg";
getWidget().addStyleName(VEmbedded.CLASSNAME + "-svg");
String data;
Map<String, String> parameters = VEmbedded.getParameters(uidl);
ObjectElement obj = Document.get().createObjectElement();
resourceElement = null;
if (parameters.get("data") == null) {
objectElement = obj;
data = getResourceUrl("src");
setResourceUrl(data);
} else {
objectElement = null;
data = "data:image/svg+xml," + parameters.get("data");
obj.setData(data);
}
getWidget().setHTML("");
obj.setType(mime);
if (!isUndefinedWidth()) {
obj.getStyle().setProperty("width", "100%");
}
if (!isUndefinedHeight()) {
obj.getStyle().setProperty("height", "100%");
}
if (uidl.hasAttribute("classid")) {
obj.setAttribute("classid",
uidl.getStringAttribute("classid"));
}
if (uidl.hasAttribute("codebase")) {
obj.setAttribute("codebase",
uidl.getStringAttribute("codebase"));
}
if (uidl.hasAttribute("codetype")) {
obj.setAttribute("codetype",
uidl.getStringAttribute("codetype"));
}
if (uidl.hasAttribute("archive")) {
obj.setAttribute("archive",
uidl.getStringAttribute("archive"));
}
if (uidl.hasAttribute("standby")) {
obj.setAttribute("standby",
uidl.getStringAttribute("standby"));
}
getWidget().getElement().appendChild(obj);
if (uidl.hasAttribute(EmbeddedConstants.ALTERNATE_TEXT)) {
obj.setInnerText(uidl.getStringAttribute(
EmbeddedConstants.ALTERNATE_TEXT));
}
} else {
VConsole.error("Unknown Embedded mimetype '" + mime + "'");
}
} else {
VConsole.error("Unknown Embedded; no type or mimetype attribute");
}
if (clearBrowserElement) {
getWidget().browserElement = null;
}
}
@Override
public VEmbedded getWidget() {
return (VEmbedded) super.getWidget();
}
@Override
public EmbeddedState getState() {
return (EmbeddedState) super.getState();
}
protected final ClickEventHandler clickEventHandler = new ClickEventHandler(
this) {
@Override
protected void fireClick(NativeEvent event,
MouseEventDetails mouseDetails) {
getRpcProxy(EmbeddedServerRpc.class).click(mouseDetails);
}
};
}