/*
* 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.nativebutton;
import com.google.gwt.event.dom.client.BlurEvent;
import com.google.gwt.event.dom.client.BlurHandler;
import com.google.gwt.event.dom.client.FocusEvent;
import com.google.gwt.event.dom.client.FocusHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.DOM;
import com.vaadin.client.EventHelper;
import com.vaadin.client.communication.StateChangeEvent;
import com.vaadin.client.ui.AbstractComponentConnector;
import com.vaadin.client.ui.Icon;
import com.vaadin.client.ui.VNativeButton;
import com.vaadin.shared.communication.FieldRpc.FocusAndBlurServerRpc;
import com.vaadin.shared.ui.Connect;
import com.vaadin.shared.ui.button.ButtonServerRpc;
import com.vaadin.shared.ui.button.NativeButtonState;
import com.vaadin.ui.NativeButton;
@Connect(NativeButton.class)
public class NativeButtonConnector extends AbstractComponentConnector implements
BlurHandler, FocusHandler {
private HandlerRegistration focusHandlerRegistration;
private HandlerRegistration blurHandlerRegistration;
@Override
public void init() {
super.init();
getWidget().buttonRpcProxy = getRpcProxy(ButtonServerRpc.class);
getWidget().client = getConnection();
getWidget().paintableId = getConnectorId();
}
@Override
public boolean delegateCaptionHandling() {
return false;
}
@Override
public void onStateChanged(StateChangeEvent stateChangeEvent) {
super.onStateChanged(stateChangeEvent);
getWidget().disableOnClick = getState().disableOnClick;
focusHandlerRegistration = EventHelper.updateFocusHandler(this,
focusHandlerRegistration);
blurHandlerRegistration = EventHelper.updateBlurHandler(this,
blurHandlerRegistration);
// Set text
if (getState().htmlContentAllowed) {
getWidget().setHTML(getState().caption);
} else {
getWidget().setText(getState().caption);
}
// handle error
if (null != getState().errorMessage) {
if (getWidget().errorIndicatorElement == null) {
getWidget().errorIndicatorElement = DOM.createSpan();
getWidget().errorIndicatorElement
.setClassName("v-errorindicator");
}
getWidget().getElement().insertBefore(
getWidget().errorIndicatorElement,
getWidget().captionElement);
} else if (getWidget().errorIndicatorElement != null) {
getWidget().getElement().removeChild(
getWidget().errorIndicatorElement);
getWidget().errorIndicatorElement = null;
}
if (getWidget().icon != null) {
getWidget().getElement().removeChild(getWidget().icon.getElement());
getWidget().icon = null;
}
Icon icon = getIcon();
if (icon != null) {
getWidget().icon = icon;
getWidget().getElement().insertBefore(icon.getElement(),
getWidget().captionElement);
icon.setAlternateText(getState().iconAltText);
}
}
@Override
public VNativeButton getWidget() {
return (VNativeButton) super.getWidget();
}
@Override
public NativeButtonState getState() {
return (NativeButtonState) super.getState();
}
@Override
public void onFocus(FocusEvent event) {
// EventHelper.updateFocusHandler ensures that this is called only when
// there is a listener on server side
getRpcProxy(FocusAndBlurServerRpc.class).focus();
}
@Override
public void onBlur(BlurEvent event) {
// EventHelper.updateFocusHandler ensures that this is called only when
// there is a listener on server side
getRpcProxy(FocusAndBlurServerRpc.class).blur();
}
}