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1
33
34 package com.icesoft.faces.component.style;
35
36 import com.icesoft.faces.context.DOMContext;
37 import com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer;
38 import com.icesoft.faces.renderkit.dom_html_basic.HTML;
39 import com.icesoft.faces.util.CoreUtils;
40
41 import org.apache.commons.logging.Log;
42 import org.apache.commons.logging.LogFactory;
43 import org.w3c.dom.Element  ;
44
45 import javax.faces.component.UIComponent;
46 import javax.faces.context.FacesContext;
47 import javax.servlet.http.HttpServletRequest ;
48 import java.beans.Beans ;
49 import java.io.IOException ;
50
51
55 public class OutputStyleRenderer extends DomBasicRenderer {
56
57 private static Log log = LogFactory.getLog(OutputStyleRenderer.class);
58 private static final String IE_EXTENTION = "_ie";
59 private static final String IE_7_EXTENTION = "_ie7";
60 private static final String SAFARI_EXTENTION = "_safari";
61 private static final String CSS_EXTENTION = ".css";
62 private static final String DT_EXTENTION = "_dt";
63
64 private static final int DEFAULT_TYPE = 0;
65 private static final int IE = 1;
66 private static final int SAFARI = 2;
67 private static final int DT = 3;
68 private static final int IE_7 = 4;
69
70 public void encodeEnd(FacesContext facesContext, UIComponent uiComponent)
71 throws IOException {
72 validateParameters(facesContext, uiComponent, OutputStyle.class);
73 try {
74 DOMContext domContext =
75 DOMContext.attachDOMContext(facesContext, uiComponent);
76 if (!domContext.isInitialized()) {
77 OutputStyle outputStyle = (OutputStyle) uiComponent;
78 Element styleEle = buildCssElement(domContext);
79 String href = outputStyle.getHref();
80 styleEle.setAttribute(HTML.HREF_ATTR, getResourceURL(facesContext,href));
81 domContext.setRootNode(styleEle);
82 int browserType = browserType(facesContext, uiComponent);
83 if (browserType != DEFAULT_TYPE) {
84 if (href.endsWith(CSS_EXTENTION)) {
85 int i = href.indexOf(CSS_EXTENTION);
86 if (i > 0) {
87 String start = href.substring(0, i);
88 Element ieStyleEle = buildCssElement(domContext);
89 String extention = IE_EXTENTION;
90 if (browserType == SAFARI) {
91 extention = SAFARI_EXTENTION;
92 }
93 if (browserType == DT) {
94 extention = DT_EXTENTION;
95 }
96 if(browserType == IE_7){
97 extention = IE_7_EXTENTION;
98 }
99 String hrefURL = CoreUtils.resolveResourceURL(facesContext, start + extention + CSS_EXTENTION);
100 ieStyleEle.setAttribute(HTML.HREF_ATTR, hrefURL);
101 styleEle.getParentNode().appendChild(ieStyleEle);
102 } else {
103 throw new RuntimeException (
104 "OutputStyle file attribute is too short. " +
105 "Needs at least one character before .css. Current Value is [" +
106 href + "]");
107 }
108 } else {
109 throw new RuntimeException (
110 "OutputStyle file attribute must end in .css. " +
111 "Current Value is [" + href + "]");
112 }
113 }
114
115 }
116 domContext.stepOver();
117 domContext.streamWrite(facesContext, uiComponent);
118 } catch (Exception e) {
119 log.error("Error in OutputStyleRenderer", e);
120 }
121 }
122
123 private Element buildCssElement(DOMContext domContext) {
124 Element styleEle = domContext.createElement("link");
125 styleEle.setAttribute(HTML.REL_ATTR, "stylesheet");
126 styleEle.setAttribute(HTML.TYPE_ATTR, "text/css");
127 return styleEle;
128 }
129
130 private int browserType(FacesContext facesContext, UIComponent uiComponent) {
131 int result = DEFAULT_TYPE;
132 String useragent = ((OutputStyle)uiComponent).getUserAgent();
133 if(useragent != null){
134 return _browserType(useragent);
135 }
136
137 Object o = facesContext.getExternalContext().getRequest();
138 if (o != null) {
139 if (o instanceof HttpServletRequest ) {
140 HttpServletRequest request = (HttpServletRequest ) o;
141 useragent = request.getHeader("user-agent");
142 if(useragent == null){
143 useragent = ((OutputStyle)uiComponent).getUserAgent();
144 }
145 if(useragent == null){
146 log.warn("Not able to find user agent. Returning default");
147 return DEFAULT_TYPE;
148 }
149 if(((OutputStyle)uiComponent).getUserAgent() == null){
150 ((OutputStyle)uiComponent).setUserAgent(useragent.toLowerCase());
151 }
152 String user = useragent.toLowerCase();
153 result = _browserType( user);
154
155 } else {
156 log.error(
157 "OutputStyleRenderer: Request is not HttpServletRequest. Its [" +
158 o.getClass().getName() + "]");
159 }
160 } else {
161 log.error(
162 "IceStyleReader: facesContext.getExternalContext().getRequest() is null");
163 }
164 return result;
165 }
166
167 private int _browserType(String user) {
168 int result = DEFAULT_TYPE;
169 if (Beans.isDesignTime()) {
170 result = DT;
171 } else {
172 if (user.indexOf("msie") != -1) {
173 result = IE;
174 if(user.indexOf("msie 7") != -1){
175 result = IE_7;
176 }
177 } else if (user.indexOf("safari") != -1) {
178 result = SAFARI;
179 }
180 }
181 return result;
182 }
183 }
184 |
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