/*
* SafeHtmlUtil.java
*
* Copyright (C) 2009-12 by RStudio, Inc.
*
* Unless you have received this program directly from RStudio pursuant
* to the terms of a commercial license agreement with RStudio, then
* this program is licensed to you under the terms of version 3 of the
* GNU Affero General Public License. This program is distributed WITHOUT
* ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT,
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the
* AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details.
*
*/
package org.rstudio.core.client;
import com.google.gwt.resources.client.ImageResource;
import com.google.gwt.safehtml.shared.SafeHtml;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.safehtml.shared.SafeHtmlUtils;
public class SafeHtmlUtil
{
public static void appendDiv(SafeHtmlBuilder sb,
String style,
String textContent)
{
sb.append(createOpenTag("div",
"class", style));
sb.appendEscaped(textContent);
sb.appendHtmlConstant("</div>");
}
public static void appendDiv(SafeHtmlBuilder sb,
String style,
SafeHtml htmlContent)
{
sb.append(createOpenTag("div",
"class", style));
sb.append(htmlContent);
sb.appendHtmlConstant("</div>");
}
public static void appendSpan(SafeHtmlBuilder sb,
String style,
String textContent)
{
sb.append(SafeHtmlUtil.createOpenTag("span",
"class", style));
sb.appendEscaped(textContent);
sb.appendHtmlConstant("</span>");
}
public static void appendSpan(SafeHtmlBuilder sb,
String style,
SafeHtml htmlContent)
{
sb.append(SafeHtmlUtil.createOpenTag("span",
"class", style));
sb.append(htmlContent);
sb.appendHtmlConstant("</span>");
}
public static void appendImage(SafeHtmlBuilder sb,
String style,
ImageResource image)
{
sb.append(SafeHtmlUtil.createOpenTag("img",
"class", style,
"width", Integer.toString(image.getWidth()),
"height", Integer.toString(image.getHeight()),
"src", image.getSafeUri().asString()));
sb.appendHtmlConstant("</img>");
}
public static SafeHtml createOpenTag(String tagName,
String... attribs)
{
StringBuilder builder = new StringBuilder();
builder.append("<").append(tagName);
for (int i = 0; i < attribs.length; i += 2)
{
builder.append(' ')
.append(SafeHtmlUtils.htmlEscape(attribs[i]))
.append("=\"")
.append(SafeHtmlUtils.htmlEscape(attribs[i+1]))
.append("\"");
}
builder.append(">");
return SafeHtmlUtils.fromTrustedString(builder.toString());
}
public static SafeHtml createDiv(String... attribs)
{
return createOpenTag("div", attribs);
}
public static SafeHtml createEmpty()
{
return SafeHtmlUtils.fromSafeConstant("");
}
public static SafeHtml concat(SafeHtml... pieces)
{
StringBuilder builder = new StringBuilder();
for (SafeHtml piece : pieces)
{
if (piece != null)
builder.append(piece.asString());
}
return SafeHtmlUtils.fromTrustedString(builder.toString());
}
public static SafeHtml createStyle(String... strings)
{
StringBuilder builder = new StringBuilder();
for (int i = 0, n = strings.length; i < n; i += 2)
{
String key = strings[i];
String value = strings[i + 1];
builder.append(SafeHtmlUtils.htmlEscape(key))
.append(": ")
.append(SafeHtmlUtils.htmlEscape(value))
.append("; ");
}
return SafeHtmlUtils.fromTrustedString(builder.toString());
}
}