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Vaadin is a web application framework for Rich Internet Applications (RIA). Vaadin enables easy development and maintenance of fast and secure rich web applications with a stunning look and feel and a wide browser support. It features a server-side architecture with the majority of the logic running on the server. Ajax technology is used at the browser-side to ensure a rich and interactive user experience.

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/*
 * 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;

import com.google.gwt.http.client.URL;
import com.google.gwt.user.client.DOM;
import com.vaadin.shared.ApplicationConstants;

/**
 * A font-based icon implementation.
 * 

* The icon represents a specific character (identified by codepoint, * {@link #getCodepoint()}, {@link #setCodepoint(int)}) within a specific font * (identified by font-family, {@link #getFontFamily()}, * {@link #setFontFamily(String)}). *

* * @since 7.2 * @author Vaadin Ltd */ public class FontIcon extends Icon { private int codepoint; private String fontFamily; public FontIcon() { setElement(DOM.createSpan()); setStyleName(CLASSNAME); } @Override public void setUri(String uri) { String[] parts = uri.substring( ApplicationConstants.FONTICON_PROTOCOL_PREFIX.length()).split( "/"); setFontFamily(URL.decode(parts[0])); setCodepoint(Integer.parseInt(parts[1], 16)); } /** * Not implemeted for {@link FontIcon} yet. * * @see com.vaadin.client.ui.Icon#setAlternateText(java.lang.String) */ @Override public void setAlternateText(String alternateText) { // TODO this is mostly for WAI-ARIA and should be implemented in an // appropriate way. } /** * Sets the font-family from which this icon comes. Use * {@link #setCodepoint(int)} to specify a particular icon (character) * within the font. * * @param fontFamily * font-family name */ protected void setFontFamily(String fontFamily) { if (this.fontFamily != null) { removeStyleName(getFontStylename()); } this.fontFamily = fontFamily; if (fontFamily != null) { addStyleName(getFontStylename()); } } /** * Gets the font-family from which this icon comes. Use * {@link #getCodepoint()} to find out which particular icon (character) * within the font this is. * * @return font-family name */ public String getFontFamily() { return fontFamily; } /** * Sets the codepoint indicating which particular icon (character) within * the font-family this is. * * @param codepoint */ protected void setCodepoint(int codepoint) { this.codepoint = codepoint; getElement().setInnerText(new String(Character.toChars(codepoint))); } /** * Gets the codepoint indicating which particular icon (character) within * the font-family this is. * * @return */ public int getCodepoint() { return codepoint; } /** * Get the font-family based stylename used to apply the font-family. * * @since 7.2 * @return stylename used to apply font-family */ protected String getFontStylename() { if (fontFamily == null) { return null; } return fontFamily.replace(' ', '-'); } /** * Checks whether or not the given uri is a font icon uri. Does not check * whether or not the font icon is available and can be rendered. * * @since 7.2 * @param uri * @return true if it's a fonticon uri */ public static boolean isFontIconUri(String uri) { return uri != null && uri.startsWith(ApplicationConstants.FONTICON_PROTOCOL_PREFIX); } @Override public String getUri() { if (fontFamily == null) { return null; } return ApplicationConstants.FONTICON_PROTOCOL_PREFIX + fontFamily + "/" + codepoint; } }




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