1
<!------------------------------------------------------------------------
2//
3// Copyright 2000 Microsoft Corporation. All Rights Reserved.
4//
5// File: SmartNav.js
6//
7// Description: this file implements a smart navigation mecanism
8//
9//----------------------------------------------------------------------->
10
11if (window.__smartNav == null)
12
...{
13
window.__smartNav = new Object();
14
15 window.__smartNav.update = function()
16
...{
17 var sn = window.__smartNav;
18 var fd;
19 document.detachEvent("onstop", sn.stopHif);
20 sn.inPost = false;
21 try ...{ fd = frames["__hifSmartNav"].document; } catch (e) ...{return;}
22 var fdr = fd.getElementsByTagName("asp_smartnav_rdir");
23 if (fdr.length > 0)
24 ...{
25 if (sn.sHif == null)
26 ...{
27 sn.sHif = document.createElement("IFRAME");
28 sn.sHif.name = "__hifSmartNav";
29 sn.sHif.style.display = "none";
30
}
31 try ...{window.location = fdr[0].url;} catch (e) ...{};
32 return;
33 }
34 var fdurl = fd.location.href;
35 if (fdurl == "javascript:smartnav=1" || fdurl == "about:blank")
36 return;
37 var fdurlb = fdurl.split("?")[0];
38 if (document.location.href.indexOf(fdurlb) < 0)
39 ...{
40 document.location.href=fdurl;
41 return;
42 }
43 if (sn.sHif != null)
44 ...{
45 sn.sHif.removeNode(true);
46 sn.sHif = null;
47 }
48 var fd = frames["__hifSmartNav"].document;
49 var hdm = document.getElementsByTagName("head")[0];
50 var hk = hdm.childNodes;
51 var tt = null;
52 for (var i = hk.length - 1; i>= 0; i--)
53 ...{
54 if (hk[i].tagName == "TITLE")
55 ...{
56 tt = hk[i].outerHTML;
57 continue;
58 }
59 if (hk[i].tagName != "BASEFONT" || hk[i].innerHTML.length == 0)
60 hdm.removeChild(hdm.childNodes[i]);
61 }
62 var kids = fd.getElementsByTagName("head")[0].childNodes;
63 for (var i = 0; i < kids.length; i++)
64 ...{
65 var tn = kids[i].tagName;
66 var k = document.createElement(tn);
67 k.id = kids[i].id;
68 k.mergeAttributes(kids[i]);
69 switch(tn)
70 ...{
71 case "TITLE":
72 if (tt == kids[i].outerHTML)
73 continue;
74 k.innerText = kids[i].text;
75 hdm.insertAdjacentElement("afterbegin", k);
76 continue;
77 case "BASEFONT" :
78 if (kids[i].innerHTML.length > 0)
79 continue;
80 break;
81 default:
82 var o = document.createElement("BODY");
83 o.innerHTML = "<BODY>" + kids[i].outerHTML + "</BODY>";
84 k = o.firstChild;
85 break;
86 }
87 hdm.appendChild(k);
88 }
89 document.body.clearAttributes();
90 document.body.id = fd.body.id;
91 document.body.mergeAttributes(fd.body);
92 var newBodyLoad = fd.body.onload;
93 if (newBodyLoad != null)
94 document.body.onload = newBodyLoad;
95 var s = "<BODY>" + fd.body.innerHTML + "</BODY>";
96 if (sn.hif != null)
97 ...{
98 var hifP = sn.hif.parentElement;
99 if (hifP != null)
100 sn.sHif=hifP.removeChild(sn.hif);
101 }
102 document.body.innerHTML = s;
103 var sc = document.scripts;
104 for (var i = 0; i < sc.length; i++)
105 ...{
106 sc[i].text = sc[i].text;
107 }
108 sn.hif = document.all("__hifSmartNav");
109 if (sn.hif != null)
110 ...{
111 var hif = sn.hif;
112 sn.hifName = "__hifSmartNav" + (new Date()).getTime();
113 frames["__hifSmartNav"].name = sn.hifName;
114 sn.hifDoc = hif.contentWindow.document;
115 if (sn.ie5)
116 hif.parentElement.removeChild(hif);
117 window.setTimeout(sn.restoreFocus,0);
118 }
119 if (typeof(window.onload) == "string")
120 ...{
121 try ...{ eval(window.onload) } catch (e) ...{};
122 }
123 else if (window.onload != null)
124 ...{
125 try ...{ window.onload() } catch (e) ...{};
126 }
127 sn.attachForm();
128 };
129
130 window.__smartNav.restoreFocus = function()
131 ...{
132 if (window.__smartNav.inPost == true) return;
133 var curAe = document.activeElement;
134 var sAeId = window.__smartNav.ae;
135 if (sAeId==null || curAe!=null && (curAe.id==sAeId||curAe.name==sAeId))
136 return;
137 var ae = document.all(sAeId);
138 if (ae == null) return;
139 try ...{ ae.focus(); } catch(e)...{};
140 }
141
142 window.__smartNav.saveHistory = function()
143 ...{
144 if (window.__smartNav.hif != null)
145 window.__smartNav.hif.removeNode();
146 if (window.__smartNav.sHif != null)
147 document.all[window.__smartNav.siHif].insertAdjacentElement(
148 "BeforeBegin", window.__smartNav.sHif);
149 }
150
151 window.__smartNav.stopHif = function()
152 ...{
153 document.detachEvent("onstop", window.__smartNav.stopHif);
154 var sn = window.__smartNav;
155 if (sn.hif != null)
156 sn.hifDoc = sn.hif.contentWindow.document;
157 if (sn.hifDoc != null)
158 sn.hifDoc.execCommand("stop");
159 }
160
161 window.__smartNav.init = function()
162 ...{
163 var sn = window.__smartNav;
164 document.detachEvent("onstop", sn.stopHif);
165 document.attachEvent("onstop", sn.stopHif);
166 if (sn.form.__InitDone == true) return;
167 sn.form.__InitDone = true;
168 try ...{ if (window.event.returnValue == false) return;} catch(e) ...{}
169 sn.inPost = true;
170 if (document.activeElement != null)
171 ...{
172 var ae = document.activeElement.id;
173 if (ae.length == 0)
174 ae = document.activeElement.name;
175 sn.ae = ae;
176 }
177 else
178 sn.ae = null;
179 try ...{document.selection.empty();} catch (e) ...{}
180
181 if (sn.hif == null)
182 ...{
183 sn.hif = document.all("__hifSmartNav");
184 sn.hifDoc = sn.hif.contentWindow.document;
185 }
186 if (sn.hifDoc != null)
187 sn.hifDoc.designMode = "On";
188 if (sn.hif.parentElement == null)
189 document.body.appendChild(sn.hif);
190
191 var hif = sn.hif;
192 hif.detachEvent("onload", sn.update);
193 hif.attachEvent("onload", sn.update);
194 };
195
196 window.__smartNav.submit = function()
197 ...{
198 window.__smartNav.init();
199 window.__smartNav.form._submit();
200 };
201
202 window.__smartNav.attachForm = function()
203 ...{
204 var cf = document.forms;
205 for (var i=0; i<cf.length; i++)
206 ...{
207 if (cf[i].__smartNavEnabled != null)
208 ...{
209 window.__smartNav.form = cf[i];
210 break;
211 }
212 }
213
214 var snfm = window.__smartNav.form;
215 if (snfm == null) return false;
216
217 var sft = snfm.target;
218 if (sft.length != 0 && sft.indexOf("__hifSmartNav") != 0) return false;
219
220 var sfc = snfm.action.split("?")[0];
221 var url = window.location.href.split("?")[0];
222 if (url.lastIndexOf(sfc) + sfc.length != url.length) return false;
223 if (snfm.__formAttached == true) return true;
224
225 snfm.__formAttached = true;
226 snfm.attachEvent("onsubmit", window.__smartNav.init);
227 snfm._submit = snfm.submit;
228 snfm.submit = window.__smartNav.submit;
229 snfm.target = window.__smartNav.hifName;
230 return true;
231 };
232
233 window.__smartNav.hifName = "__hifSmartNav" + (new Date()).getTime();
234 window.__smartNav.ie5 = navigator.appVersion.indexOf("MSIE 5") > 0;
235 var rc = window.__smartNav.attachForm();
236 var hif = document.all("__hifSmartNav");
237 if (rc)
238 ...{
239 var fsn = frames["__hifSmartNav"];
240 fsn.name = window.__smartNav.hifName;
241 window.__smartNav.siHif = hif.sourceIndex;
242 try ...{
243 if (fsn.document.location != "javascript:smartnav=1")
244 ...{
245 fsn.document.designMode = "On";
246 hif.attachEvent("onload",window.__smartNav.update);
247 window.__smartNav.hif = hif;
248 }
249 }
250 catch (e) ...{ window.__smartNav.hif = hif; }
251 window.attachEvent("onbeforeunload", window.__smartNav.saveHistory);
252 }
253 else
254 window.__smartNav = null;
255
}
256
257
W3AWPMNK1EI77/aspnet_client/system_web/1_1_4322/SmartNav.js[8K，2009-6-12 11:57:59]，打开代码结构图
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