/*
* Copyright 2009-2014 PrimeTek.
*
* 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 org.primefaces.component.commandbutton;
import java.io.IOException;
import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.faces.event.ActionEvent;
import org.primefaces.context.RequestContext;
import org.primefaces.renderkit.CoreRenderer;
import org.primefaces.util.CSVBuilder;
import org.primefaces.util.ComponentUtils;
import org.primefaces.util.HTML;
import org.primefaces.util.WidgetBuilder;
public class CommandButtonRenderer extends CoreRenderer {
@Override
public void decode(FacesContext context, UIComponent component) {
CommandButton button = (CommandButton) component;
if(button.isDisabled()) {
return;
}
String param = component.getClientId(context);
if(context.getExternalContext().getRequestParameterMap().containsKey(param)) {
component.queueEvent(new ActionEvent(component));
}
decodeBehaviors(context, component);
}
@Override
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
CommandButton button = (CommandButton) component;
encodeMarkup(context, button);
encodeScript(context, button);
}
protected void encodeMarkup(FacesContext context, CommandButton button) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String clientId = button.getClientId(context);
String type = button.getType();
boolean pushButton = (type.equals("reset")||type.equals("button"));
Object value = button.getValue();
String icon = button.resolveIcon();
String request = pushButton ? null: buildRequest(context, button, clientId);
String onclick = buildDomEvent(context, button, "onclick", "click", "action", request);
writer.startElement("button", button);
writer.writeAttribute("id", clientId, "id");
writer.writeAttribute("name", clientId, "name");
writer.writeAttribute("class", button.resolveStyleClass(), "styleClass");
if(onclick != null) {
if(button.requiresConfirmation()) {
writer.writeAttribute("data-pfconfirmcommand", onclick, null);
writer.writeAttribute("onclick", button.getConfirmationScript(), "onclick");
}
else
writer.writeAttribute("onclick", onclick, "onclick");
}
renderPassThruAttributes(context, button, HTML.BUTTON_ATTRS, HTML.CLICK_EVENT);
if(button.isDisabled()) writer.writeAttribute("disabled", "disabled", "disabled");
if(button.isReadonly()) writer.writeAttribute("readonly", "readonly", "readonly");
//icon
if(icon != null && !icon.trim().equals("")) {
String defaultIconClass = button.getIconPos().equals("left") ? HTML.BUTTON_LEFT_ICON_CLASS : HTML.BUTTON_RIGHT_ICON_CLASS;
String iconClass = defaultIconClass + " " + icon;
writer.startElement("span", null);
writer.writeAttribute("class", iconClass, null);
writer.endElement("span");
}
//text
writer.startElement("span", null);
writer.writeAttribute("class", HTML.BUTTON_TEXT_CLASS, null);
if(value == null) {
writer.write("ui-button");
}
else {
if(button.isEscape())
writer.writeText(value, "value");
else
writer.write(value.toString());
}
writer.endElement("span");
writer.endElement("button");
}
protected String buildRequest(FacesContext context, CommandButton button, String clientId) throws FacesException {
RequestContext requestContext = RequestContext.getCurrentInstance();
boolean csvEnabled = requestContext.getApplicationContext().getConfig().isClientSideValidationEnabled()&&button.isValidateClient();
String request = null;
boolean ajax = button.isAjax();
if(ajax) {
request = buildAjaxRequest(context, button, null);
}
else {
UIComponent form = ComponentUtils.findParentForm(context, button);
if(form == null) {
throw new FacesException("CommandButton : \"" + clientId + "\" must be inside a form element");
}
request = buildNonAjaxRequest(context, button, form, null, false);
}
if(csvEnabled) {
CSVBuilder csvb = requestContext.getCSVBuilder();
request = csvb.init().source("this").ajax(ajax).process(button, button.getProcess()).update(button, button.getUpdate()).command(request).build();
}
return request;
}
protected void encodeScript(FacesContext context, CommandButton button) throws IOException {
String clientId = button.getClientId(context);
WidgetBuilder wb = getWidgetBuilder(context);
wb.init("CommandButton", button.resolveWidgetVar(), clientId);
encodeClientBehaviors(context, button);
wb.finish();
}
}