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1
5 package com.opensymphony.webwork.views.jsp.vui;
6
7 import com.opensymphony.webwork.components.Include;
8 import com.opensymphony.webwork.config.Configuration;
9 import com.opensymphony.webwork.util.ContainUtil;
10 import com.opensymphony.webwork.views.jsp.ParamTag;
11 import com.opensymphony.webwork.views.jsp.WebWorkBodyTagSupport;
12 import org.apache.commons.logging.Log;
13 import org.apache.commons.logging.LogFactory;
14
15 import javax.servlet.http.HttpServletRequest  ;
16 import javax.servlet.http.HttpServletResponse ;
17 import javax.servlet.jsp.JspException ;
18 import javax.servlet.jsp.JspTagException ;
19 import javax.servlet.jsp.JspWriter ;
20 import java.util.HashMap ;
21 import java.util.Map ;
22
23
24
30 public abstract class AbstractVUITag extends WebWorkBodyTagSupport implements ParamTag.Parametric {
31
33 private static Log log = LogFactory.getLog(AbstractVUITag.class);
35
36
38 protected Map params = new HashMap ();
39 protected String templateFooterAttr;
40 protected String templateHeaderAttr;
41 protected String theme;
42 protected String themeAttr;
43
44
46 public abstract String getFooterTemplate();
47
48 public abstract String getHeaderTemplate();
50
51 public String getBrowserUserAgent() {
52 HttpServletRequest request = (HttpServletRequest ) pageContext.getRequest();
53 String ua = request.getHeader("User-Agent");
54
55 if (ua == null) {
56 ua = request.getHeader("user-agent");
57 }
58
59 return ((ua == null) ? "" : ua);
60 }
61
62 public Map getParameters() {
63 return params;
64 }
65
66 public void setTemplateFooter(String aName) {
67 templateFooterAttr = aName;
68 }
69
70 public void setTemplateHeader(String aName) {
71 templateHeaderAttr = aName;
72 }
73
74 public void setTheme(String aName) {
75 themeAttr = aName;
76 }
77
78 public String getTheme() {
79 if ((theme == null) || (theme == "")) {
82 theme = (String ) pageContext.findAttribute("theme");
83 }
84
85 if ((theme == null) || (theme == "")) {
87 theme = Configuration.getString("webwork.ui.theme");
88
89 if (!theme.endsWith("/")) {
90 theme += "/";
91 }
92 }
93
94 return theme;
95 }
96
97 public void addParameter(String name, Object value) {
98 addParameterInternal(name, value);
99 }
100
101 public int doAfterBody() throws JspException {
102 if (bodyContent != null) {
103 try {
104 JspWriter out = getPreviousOut();
105 out.print(bodyContent.getString());
106 bodyContent.clearBody();
107 } catch (Exception ex) {
108 ex.printStackTrace();
109 throw new JspTagException ("Exception:: " + toString(ex));
110 }
111
112 return (EVAL_BODY_BUFFERED);
113 }
114
115 return (SKIP_BODY);
116 }
117
118 public int doEndTag() throws JspException {
119 if (themeAttr != null) {
120 theme = (String ) findValue(themeAttr);
121 }
122
123 getStack().push(this);
124
125 try {
126 String template = templateFooterAttr;
128
129 if (template == null) {
130 template = getFooterTemplate();
131 }
132
133 Include.include(getTemplateDirectory() + template, pageContext.getOut(),
134 pageContext.getRequest(), (HttpServletResponse ) pageContext.getResponse());
135 } catch (Exception ex) {
136 ex.printStackTrace();
137 throw new JspTagException ("Exception including footer: " + toString(ex));
138 } finally {
139 getStack().pop();
140 params = new HashMap ();
141 }
142
143 return EVAL_PAGE;
144 }
145
146 public int doStartTag() {
148 if (themeAttr != null) {
149 theme = (String ) findValue(themeAttr);
150 }
151
152 initializeAttributes();
153
154 getStack().push(this);
155
156 try {
157 String template = templateHeaderAttr;
159
160 if (template == null) {
161 template = getHeaderTemplate();
162 }
163
164 Include.include(getTemplateDirectory() + template, pageContext.getOut(),
165 pageContext.getRequest(), (HttpServletResponse ) pageContext.getResponse());
166 } catch (Exception ex) {
167 ex.printStackTrace();
168
169 return SKIP_BODY;
170 } finally {
171 getStack().pop();
172 }
173
174 return EVAL_BODY_INCLUDE;
175 }
176
177 public boolean memberOf(Object obj1, Object obj2) {
178 return ContainUtil.contains(obj1, obj2);
179 }
180
181 protected void getSetParameter(String a, String n) {
182 if (a != null) {
183 Object value = findValue(a);
184
185 if (value != null) {
186 addParameterInternal(n, value);
187 }
188 }
189 }
190
191 protected abstract void initializeAttributes();
192
193
196 protected String getTemplateDirectory() {
197 String ua = getBrowserUserAgent();
198
199 return BrowserSupport.getBrowserTemplateDirectory(ua);
200 }
201
202 private void addParameterInternal(String name, Object value) {
203 params.put(name, value);
204 }
205 }
206 |
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