/*
* 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.client.ui.richtextarea;
import com.google.gwt.event.dom.client.BlurEvent;
import com.google.gwt.event.dom.client.BlurHandler;
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.ui.AbstractFieldConnector;
import com.vaadin.client.ui.ShortcutActionHandler.BeforeShortcutActionListener;
import com.vaadin.client.ui.SimpleManagedLayout;
import com.vaadin.client.ui.VRichTextArea;
import com.vaadin.shared.ui.Connect;
import com.vaadin.shared.ui.Connect.LoadStyle;
import com.vaadin.shared.util.SharedUtil;
import com.vaadin.ui.RichTextArea;
@Connect(value = RichTextArea.class, loadStyle = LoadStyle.LAZY)
public class RichTextAreaConnector extends AbstractFieldConnector implements
Paintable, BeforeShortcutActionListener, SimpleManagedLayout {
/*
* Last value received from the server
*/
private String cachedValue = "";
@Override
protected void init() {
getWidget().addBlurHandler(new BlurHandler() {
@Override
public void onBlur(BlurEvent event) {
flush();
}
});
getLayoutManager().registerDependency(this,
getWidget().formatter.getElement());
}
@Override
public void onUnregister() {
super.onUnregister();
getLayoutManager().unregisterDependency(this,
getWidget().formatter.getElement());
}
@Override
public void updateFromUIDL(final UIDL uidl, ApplicationConnection client) {
getWidget().client = client;
getWidget().id = uidl.getId();
if (uidl.hasVariable("text")) {
String newValue = uidl.getStringVariable("text");
if (!SharedUtil.equals(newValue, cachedValue)) {
getWidget().setValue(newValue);
cachedValue = newValue;
}
}
if (!isRealUpdate(uidl)) {
return;
}
getWidget().setEnabled(isEnabled());
getWidget().setReadOnly(isReadOnly());
getWidget().immediate = getState().immediate;
int newMaxLength = uidl.hasAttribute("maxLength") ? uidl
.getIntAttribute("maxLength") : -1;
if (newMaxLength >= 0) {
if (getWidget().maxLength == -1) {
getWidget().keyPressHandler = getWidget().rta
.addKeyPressHandler(getWidget());
}
getWidget().maxLength = newMaxLength;
} else if (getWidget().maxLength != -1) {
getWidget().getElement().setAttribute("maxlength", "");
getWidget().maxLength = -1;
getWidget().keyPressHandler.removeHandler();
}
if (uidl.hasAttribute("selectAll")) {
getWidget().selectAll();
}
}
@Override
public void onBeforeShortcutAction(Event e) {
flush();
}
@Override
public VRichTextArea getWidget() {
return (VRichTextArea) super.getWidget();
}
@Override
public void flush() {
if (getConnection() != null && getConnectorId() != null) {
final String html = getWidget().getSanitizedValue();
if (!html.equals(cachedValue)) {
cachedValue = html;
getConnection().updateVariable(getConnectorId(), "text", html,
getState().immediate);
}
}
}
@Override
public void layout() {
if (!isUndefinedHeight()) {
int rootElementInnerHeight = getLayoutManager().getInnerHeight(
getWidget().getElement());
int formatterHeight = getLayoutManager().getOuterHeight(
getWidget().formatter.getElement());
int editorHeight = rootElementInnerHeight - formatterHeight;
if (editorHeight < 0) {
editorHeight = 0;
}
getWidget().rta.setHeight(editorHeight + "px");
}
}
}