org.icefaces.ace.component.themeselect.ThemeSelectRenderer Maven / Gradle / Ivy
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The advanced component library for ICEfaces.
/*
* Copyright 2004-2013 ICEsoft Technologies Canada Corp.
*
* 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.icefaces.ace.component.themeselect;
import org.icefaces.ace.renderkit.InputRenderer;
import org.icefaces.ace.util.Constants;
import org.icefaces.ace.util.JSONBuilder;
import org.icefaces.render.MandatoryResourceComponent;
import org.icefaces.util.EnvUtils;
import javax.el.ELContext;
import javax.el.ExpressionFactory;
import javax.el.ValueExpression;
import javax.faces.application.Resource;
import javax.faces.application.ResourceHandler;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import java.io.IOException;
import java.net.URL;
import java.util.Enumeration;
import java.util.Map;
import java.util.TreeMap;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
@MandatoryResourceComponent(tagName = "themeSelect", value = "org.icefaces.ace.component.themeselect.ThemeSelect")
public class ThemeSelectRenderer extends InputRenderer {
private FacesContext context;
private ResponseWriter writer;
private ThemeSelect component;
private String clientId;
private String selectedTheme;
private Map themeList;
private boolean ariaEnabled;
@Override
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
this.context = context;
this.component = (ThemeSelect) component;
super.encodeEnd(context, component);
if (!component.isRendered()) {
return;
}
writer = context.getResponseWriter();
clientId = component.getClientId(context);
String selectId = "select_" + clientId;
String styleClass = (styleClass = this.component.getStyleClass()) == null ? "" : styleClass.trim();
writer.startElement("span", component);
writer.writeAttribute("id", clientId, "id");
writer.writeAttribute("class", "ui-select-theme" + (styleClass.equals("") ? "" : " " + styleClass), null);
writer.startElement("select", component);
writer.writeAttribute("id", selectId, "id");
writer.writeAttribute("name", selectId, "id");
String stateClass = "ui-state-default";
if (this.component.isDisabled()) {
writer.writeAttribute("disabled", "disabled", "disabled");
stateClass = "ui-state-disabled";
}
writer.writeAttribute("class", "ui-widget " + stateClass + getStateStyleClasses(this.component), null);
writeAttributes("accesskey", "dir", "label", "lang", "style", "tabindex", "title", "alt");
ariaEnabled = EnvUtils.isAriaEnabled(context);
writerSelAriaAttrs();
renderOptions();
writer.endElement("select");
renderScript();
writer.startElement("span", null);
writer.writeAttribute("class", "ui-helper-hidden", null);
writer.write(Integer.toString(selectedTheme.hashCode()) + Integer.toString(themeList.hashCode()));
writer.endElement("span");
writer.endElement("span");
}
private void writerSelAriaAttrs() throws IOException {
if (!ariaEnabled) return;
writer.writeAttribute("role", "listbox", null);
if (component.isRequired()) {
writer.writeAttribute("aria-required", "true", "required");
}
if (component.isDisabled()) {
writer.writeAttribute("aria-disabled", "true", "disabled");
}
if (!component.isValid()) {
writer.writeAttribute("aria-invalid", "true", null);
}
String label = component.getLabel();
if (label != null) {
writer.writeAttribute("aria-label", label, "label");
}
}
private void writeAttributes(String... keys) throws IOException {
Object value;
for (String key : keys) {
value = component.getAttributes().get(key);
if (value != null) {
writer.writeAttribute(key, value, key);
}
}
}
private void renderOptions() throws IOException {
getThemeList();
selectedTheme = (String) component.getValue();
selectedTheme = selectedTheme == null ? "" : selectedTheme.trim();
if (selectedTheme.equals("")) {
selectedTheme = getSelectedTheme();
}
if (themeList.get(selectedTheme) == null) {
selectedTheme = "sam";
}
context.getExternalContext().getSessionMap().put(Constants.THEME_PARAM, selectedTheme);
String theme, href;
for (Map.Entry entry : themeList.entrySet()) {
theme = entry.getKey();
href = entry.getValue();
writer.startElement("option", null);
writer.writeAttribute("value", theme, null);
if (theme.equals(selectedTheme)) {
writer.writeAttribute("selected", "selected", null);
}
writer.writeAttribute("data-href", href, null);
writer.write(theme);
writer.endElement("option");
}
}
private void renderScript() throws IOException {
JSONBuilder jb = JSONBuilder.create();
encodeClientBehaviors(context, component, jb);
writer.startElement("script", null);
writer.writeAttribute("type", "text/javascript", null);
writer.write("ice.ace.ThemeSelect.singleEntry(\"" + clientId + "\",{" + jb + "});");
writer.endElement("script");
}
@SuppressWarnings("unchecked")
private void getThemeList() throws IOException {
Map appMap = context.getExternalContext().getApplicationMap();
String THEME_LIST = Constants.THEME_PARAM + ".list";
themeList = (Map) appMap.get(THEME_LIST);
if (themeList != null) {
return;
}
themeList = new TreeMap();
ResourceHandler resourceHandler = context.getApplication().getResourceHandler();
Resource resource;
for (String theme : new String[]{"rime", "sam"}) {
resource = resourceHandler.createResource("themes/" + theme + "/theme.css", "icefaces.ace");
if (resource != null) {
themeList.put(theme, resource.getRequestPath());
}
}
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
Enumeration urls = classLoader.getResources("META-INF/resources");
URL url;
Matcher matcher = Pattern.compile("jar:.*/WEB-INF/lib/(.+)\\.jar!/META-INF/resources").matcher("");
String theme;
while (urls.hasMoreElements()) {
url = urls.nextElement();
if (matcher.reset(url.toString()).matches()) {
theme = matcher.group(1);
url = classLoader.getResource("META-INF/resources/ace-" + theme);
if (url != null) {
resource = resourceHandler.createResource("theme.css", "ace-" + theme);
if (resource != null) {
themeList.put(theme, resource.getRequestPath());
}
}
}
}
appMap.put(THEME_LIST, themeList);
}
// Copied from org.icefaces.ace.renderkit.HeadRenderer.processEvent
public String getSelectedTheme() {
FacesContext context = FacesContext.getCurrentInstance();
String theme = null;
String themeParamValue = context.getExternalContext().getInitParameter(Constants.THEME_PARAM);
if (themeParamValue != null) {
ELContext elContext = context.getELContext();
ExpressionFactory expressionFactory = context.getApplication().getExpressionFactory();
ValueExpression ve = expressionFactory.createValueExpression(elContext, themeParamValue, String.class);
theme = (String) ve.getValue(elContext);
}
if (theme == null) theme = "";
else theme = theme.trim();
if ("".equals(theme) || theme.equalsIgnoreCase("sam")) {
theme = "sam";
}
return theme;
}
@Override
public void decode(FacesContext context, UIComponent component) {
super.decode(context, component);
Map requestParameterMap = context.getExternalContext().getRequestParameterMap();
String submittedValue = requestParameterMap.get("select_" + component.getClientId(context));
if (submittedValue != null) {
((ThemeSelect) component).setSubmittedValue(submittedValue);
}
decodeBehaviors(context, component);
}
}
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