copy wcpref.js from wc-summ branch to trunk

diff --git a/webcit/wcpref.js b/webcit/wcpref.js
new file mode 100644 (file)
index 0000000..7ae721f
--- /dev/null
+++ b/webcit/wcpref.js
@@ -0,0 +1,79 @@
+/** Webcit preference code */
+var persistentStorage = false;
+/* DOM5 storage disabled for now.. we want localStorage which isn't as widely available yet */
+//if (window.sessionStorage) {
+//  persistentStorage = true;
+//}
+function WCPrefs() {
+  this.cookieValCache = new Object();
+  this.noExpire = "Mon, 18 Jan 2038 5:14:07 AM";
+}
+
+function readPref(name) {
+  if (persistentStorage) {
+    return sessionStorage.getItem(name);
+  } else {
+    return this.cookieValCache[name];
+  }
+}
+
+function setPref(name, value) {
+  if (persistentStorage) {
+    sessionStorage.setItem(name, value);
+  } else {
+    document.cookie = "WC_" + name + "="+value+";expires="+this.noExpire;
+    //    this.cookieValCache[name] = value; 
+    //this.saveLocal();
+  }
+}
+
+function loadLocal() {
+  if (!persistentStorage) {
+    var cookies = document.cookie.split(";");
+    for(var i=0; i<cookies.length; i++) {
+      var cookie = cookies[i].split("=");
+      var name = cookie[0];
+      if (name.charAt(0) == " ") {
+       name = name.substr(1);
+      }
+      if (name.substr(0, 3) == "WC_") {
+       name = name.substr(3);
+       this.cookieValCache[name] = cookie[1];
+       if (!!window.console) {
+         console.log(name+"="+cookie[1]);
+       }
+      }
+    }
+  }
+}
+
+function saveLocal() {
+  if (!persistentStorage) {
+    // First we purge cookies with WC_ infront
+    var cookies = document.cookie.split(";");
+    var numOfCookies = cookies.length;
+    var finalCookieString = "";
+    for(var i=0; i<numOfCookies; i++) 
+      var cookie = cookies[i].split("=");
+      var name = cookie[0];
+      if (name.substr(0, 3) != "WC_") {
+       finalCookieString += cookies[i] + ";";
+      }
+    }
+    for(key in this.cookieValCache) {
+      var val = this.cookieValCache[key];
+      finalCookieString += "WC_" + key+"="+val+";";
+    }
+    document.cookie = finalCookieString;
+}
+
+WCPrefs.prototype.saveLocal = saveLocal;
+WCPrefs.prototype.loadLocal = loadLocal;
+WCPrefs.prototype.setPref = setPref;
+WCPrefs.prototype.readPref = readPref;
+var ctdlLocalPrefs = null;
+setupPrefEngine();
+function setupPrefEngine() {
+  ctdlLocalPrefs = new WCPrefs();
+  ctdlLocalPrefs.loadLocal();
+}