/**
* Copyright 2010 Google Inc.
*
* 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.waveprotocol.box.server.rpc.render.web.text;
import java.util.Set;
/**
* A Utility for generating CSS styles.
*
* @author dhanji@gmail.com (Dhanji R. Prasanna)
*/
public class Styler {
/**
* Simple interface for providing parameters.
*
* @author David Byttow
*/
interface Params {
/**
* @return the value of the given key.
*/
String get(String name);
/**
* @return set of all parameter names.
*/
Set<String> nameSet();
}
/**
* Takes a bunch of params from the embed api and generates an HTML style.
* <pre>
* bgcolor: "white",
* color: "black",
* font: "Arial",
* fontSize: "8pt",
* header: false,
* footer: false,
* toolbar: false,
* rootUrl: WAVE_ROOT_URL,
* width: 481,
* height: 500
* </pre>
*/
public static String fromEmbedOptions(Params params) {
StringBuilder builder = new StringBuilder();
builder.append(".styleable {");
addStyleRule(builder, "color", "color", params);
addStyleRule(builder, "bgcolor", "background-color", params);
addStyleRule(builder, "font", "font-family", params);
addStyleRule(builder, "fontSize", "font-size", params);
builder.append("}");
return builder.toString();
}
private static void addStyleRule(StringBuilder builder, String param, String style,
Params params) {
String value = params.get(param);
if (null != value) {
builder.append(style);
builder.append(":");
builder.append(value);
builder.append(";");
}
}
}