/* Style.java {{IS_NOTE Purpose: Description: History: Thu Jul 20 15:17:40 2006, Created by tomyeh }}IS_NOTE Copyright (C) 2006 Potix Corporation. All Rights Reserved. {{IS_RIGHT }}IS_RIGHT */ package org.zkoss.zul; import java.util.Iterator; import org.zkoss.lang.Objects; import org.zkoss.zk.ui.Executions; import org.zkoss.zk.ui.AbstractComponent; import org.zkoss.zk.ui.UiException; /** * The style component used to specify CSS styles for the owner desktop. * * Note: a style component can appear anywhere in a ZUML page, but it * affects all components in the same desktop. * * There are three formats when used in a ZUML page: * * Method 1: Specify the URL of the CSS file * <style src="my.css"/> * * * Method 2: Specify the CSS directly * <style> * .mycls { * border: 1px outset #777; * } *</style> * * * Method 3: Specify the CSS by use of the content * property ({@link #setContent}). * <style> * <attribute name="content"> * .mycls { * border: 1px outset #777; * } * </attribute> *</style> * * * @author tomyeh */ public class Style extends AbstractComponent { private String _src; private String _content; public Style() { } /** * @param src the URI of an external style sheet. */ public Style(String src) { setSrc(src); } /** Returns the URI of an external style sheet. * * Default: null. If null, the children's * (must be instances of {@link Label}) value ({@link Label#getValue}) * is used as the content of styles. * If not null, the HTML LINK tag is generated to ask the browser * to load the specified style sheet. * * Note: If not null, the content of children are ignored. */ public String getSrc() { return _src; } /** Sets the URI of an external style sheet. * * @param src the URI of an external style sheet, or null to use * the content of children ({@link Label#getValue}) instead. */ public void setSrc(String src) { if (src != null && src.length() == 0) src = null; if (!Objects.equals(_src, src)) { _src = src; invalidate(); } } /** Returns the content of the style element. * By content we mean the CSS that will be enclosed * by the HTML STYLE element. * * Default: null. * * @since 3.0.0 */ public String getContent() { return _content; } /** Sets the content of the style element. * By content we mean the CSS that will be enclosed * by the HTML STYLE element. * * @since 3.0.0 */ public void setContent(String content) { if (content != null && content.length() == 0) content = null; if (!Objects.equals(_content, content)) { _content = content; invalidate(); } } //Component// /** Not childable. */ public boolean isChildable() { return false; } public void redraw(java.io.Writer out) throws java.io.IOException { final boolean ie = Executions.getCurrent().isExplorer(); if (ie) { //IE: unable to look back LINK or STYLE with ID out.write(" out.write(getUuid()); out.write("\">"); } if (_src != null) { out.write("\n out.write(getDesktop().getExecution().encodeURL(_src)); if (!ie) { out.write("\" id=\""); out.write(getUuid()); } out.write("\"/>"); } else { out.write("\n if (!ie) { out.write(" id=\""); out.write(getUuid()); out.write('"'); } out.write(">\n"); final String content = getContent(); if (content != null) { out.write(content); out.write('\n'); } out.write(""); } if (ie) out.write("\n"); } }
