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var Config = {
cfgFileName : curWidget.id + "/config.dta",
XHRObj : null,
xmlDocument : null,
serverUrl : "", // Will become the main URL for contacting the server
serverAddr : "",
serverAddrDefault: "192.168.1.122:8000",
format :"has",
tgtBufferBitrate : 6000, // kbps
totalBufferDuration : 30, // sec
initialBuffer : 10, // in percent
pendingBuffer: 40, // in percent
initialTimeOut: 3, // sec
skipDuration : 30, // sec
noLiveChannels : 30,
firstLaunch : false
};
/*
* Check for First launch
* Launch Config Menu
* Write File in Confi Menu
* Come back here, read the file and continue
*/
Config.init = function () {
var fileSystemObj = new FileSystem();
if (fileSystemObj.isValidCommonPath(curWidget.id) == 0){
// Display.showPopup ("First Launch of the Widget --> Launching Config Menu");
alert("First Launch of the Widget");
// should switch to the config screen here
var res = fileSystemObj.createCommonDir(curWidget.id);
if (res == true) {
Config.firstLaunch = true;
Main.init();
Main.changeState(4);
return;
}
else {
Main.init();
Display.showPopup ("ERROR: Cannot create widget folder");
Main.log("ERROR: Cannot create widget folder curWidget.id= " +curWidget.id);
}
return;
}
else {
Config.readContext();
}
Config.fetchConfig();
};
Config.fetchConfig = function () {
if (this.XHRObj == null) {
this.XHRObj = new XMLHttpRequest();
}
if (this.XHRObj) {
this.XHRObj.onreadystatechange = function() {
if (Config.XHRObj.readyState == 4) {
Config.processConfig();
}
};
this.XHRObj.open("GET", this.serverUrl + "/widget.conf", true);
this.XHRObj.send(null);
}
};
Config.writeContext = function (addr) {
var fileSystemObj = new FileSystem();
var fd = fileSystemObj.openCommonFile(Config.cfgFileName,"w");
fd.writeLine('serverAddr ' + addr); // SHould be overwritten by Options menue
fileSystemObj.closeCommonFile(fd);
};
Config.updateContext = function (addr) {
var fileSystemObj = new FileSystem();
var fd = fileSystemObj.openCommonFile(Config.cfgFileName,"w");
fd.writeLine('serverAddr ' + addr); // SHould be overwritten by Options menue
fileSystemObj.closeCommonFile(fd);
Config.serverAddr = addr;
Config.serverUrl = "http://" + Config.serverAddr;
};
Config.readContext = function () {
var fileSystemObj = new FileSystem();
try {
var fd = fileSystemObj.openCommonFile(Config.cfgFileName, "r");
var line = "";
while (line = fd.readLine()) {
var avp = line.split(" ");
// Display.showPopup ("Reading Config: attr= " + avp[0] + " val= " + avp[1]);
if (avp.length > 1) {
Config.serverAddr = avp[1];
Config.serverUrl = "http://" + Config.serverAddr;
}
else {
Display.showPopup ("WARNING: Error in Config File. Try widget restart.");
// TODO: I should re-write the config file
}
}
fileSystemObj.closeCommonFile(fd);
}
catch (e) {
Main.log("Config.readContext: Error while reading: e= " +e);
var res = fileSystemObj.createCommonDir(curWidget.id);
if (res == true) {
Main.log("Config.readContext: Widget Folder created");
Display.showPopup ("Config Read Error: Try widget restart");
}
else {
Main.log("Config.readContext: Widget Folder creation failed");
Display.showPopup ("Config Read Error: Try re-installing the widget");
alert("-------------- Error: res = false ------------------------");
}
Config.firstLaunch = true;
Main.init();
Main.changeState(4);
}
};
Config.getXmlValue = function (itm) {
var val = this.xmlDocument.getElementsByTagName(itm);
var res = 0;
try {
res = val[0].firstChild.data;
}
catch (e) {
Main.log("parsing widget.conf: Item= " + itm + " not found" + e);
alert ("parsing widget.conf: Item= " + itm + " not found e= " + e);
}
return res;
};
Config.getXmlString = function (itm) {
var val = this.xmlDocument.getElementsByTagName(itm);
var res = "";
try {
res = val[0].firstChild.data;
}
catch (e) {
Main.log("parsing widget.conf: Item= " + itm + " not found" + e);
alert ("parsing widget.conf: Item= " + itm + " not found e= " + e);
};
return res;
};
Config.processConfig = function () {
if (this.XHRObj.status != 200) {
alert ("Config Server Error");
Display.showPopup("Config Server Error " + this.XHRObj.status);
Main.log("Config Server Error " + this.XHRObj.status);
}
else {
var xmlResponse = this.XHRObj.responseXML;
if (xmlResponse == null) {
alert ("xml error");
Display.showPopup("Error in XML Config File");
Main.log("Error in XML Config File");
return;
}
this.xmlDocument = xmlResponse.documentElement;
if (!this.xmlDocument ) {
alert("Failed to get valid Config XML");
Display.showPopup("Failed to get valid Config XML");
Main.log("Failed to get valid Config XML");
return;
}
else {
alert ("Paring config XML now");
Main.log("Paring config XML now");
this.format = Config.getXmlString("format");
var res = Config.getXmlValue("tgtBufferBitrate");
if (res != 0)
this.tgtBufferBitrate = 1.0 * res;
res = Config.getXmlValue("totalBufferDuration");
if (res != 0) this.totalBufferDuration = 1.0 * res;
res= Config.getXmlValue("initialBuffer");
if (res != 0) this.initialBuffer = 1.0 * res;
res = Config.getXmlValue("pendingBuffer");
if (res != 0) this.pendingBuffer = 1.0 * res;
res = Config.getXmlValue("skipDuration");
if (res != 0) this.skipDuration= 1.0 * res;
res = Config.getXmlValue("initialTimeOut");
if (res != 0) this.initialTimeOut = 1.0 * res;
res = Config.getXmlValue("liveChannels");
if (res != 0) noLiveChannels = res;
alert("**** Config ****");
alert("serverUrl= " + Config.serverUrl);
alert("format= " + Config.format);
alert("tgtBufferBitrate= " + Config.tgtBufferBitrate);
alert("totalBufferDuration= " + Config.totalBufferDuration);
alert("initialBuffer= " + Config.initialBuffer);
alert("pendingBuffer= " + Config.pendingBuffer);
alert("skipDuration= " + Config.skipDuration);
alert("initialTimeOut= " + Config.initialTimeOut);
alert("**** /Config ****");
};
};
Main.init();
};
// This function cleans up after un-installation
Config.reset = function () {
var fileSystemObj = new FileSystem();
fileSystemObj.deleteCommonFile(curWidget.id + "/config.dta");
};
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